diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/objc/objc-act.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/objc/objc-act.c | 20108 |
1 files changed, 0 insertions, 20108 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/objc/objc-act.c b/gcc-4.2.1-5666.3/gcc/objc/objc-act.c deleted file mode 100644 index c5ff5ff89..000000000 --- a/gcc-4.2.1-5666.3/gcc/objc/objc-act.c +++ /dev/null @@ -1,20108 +0,0 @@ -/* Implement classes and message passing for Objective C. - Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, - 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. - Contributed by Steve Naroff. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GCC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to -the Free Software Foundation, 51 Franklin Street, Fifth Floor, -Boston, MA 02110-1301, USA. */ - -/* Purpose: This module implements the Objective-C 4.0 language. - - compatibility issues (with the Stepstone translator): - - - does not recognize the following 3.3 constructs. - @requires, @classes, @messages, = (...) - - methods with variable arguments must conform to ANSI standard. - - tagged structure definitions that appear in BOTH the interface - and implementation are not allowed. - - public/private: all instance variables are public within the - context of the implementation...I consider this to be a bug in - the translator. - - statically allocated objects are not supported. the user will - receive an error if this service is requested. - - code generation `options': - - */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "tree.h" -#include "rtl.h" -#include "tm_p.h" -#include "expr.h" - -#ifdef OBJCPLUS -#include "cp-tree.h" -#else -#include "c-tree.h" -#endif - -#include "c-common.h" -#include "c-pragma.h" -#include "flags.h" -#include "langhooks.h" -#include "objc-act.h" -#include "input.h" -#include "except.h" -#include "function.h" -#include "output.h" -#include "toplev.h" -#include "ggc.h" -#include "varray.h" -#include "debug.h" -#include "target.h" -#include "diagnostic.h" -#include "cgraph.h" -#include "tree-iterator.h" -#include "libfuncs.h" -#include "hashtab.h" -#include "langhooks-def.h" -/* APPLE LOCAL optimization pragmas 3124235/3420242 */ -#include "opts.h" - -#define OBJC_VOID_AT_END void_list_node - -/* APPLE LOCAL radar 4506893 */ -static bool in_objc_property_setter_name_context = false; -static unsigned int should_call_super_dealloc = 0; -/* APPLE LOCAL begin radar 4757423 */ -static bool should_call_super_finalize = false; -/* APPLE LOCAL end radar 4757423 */ - -/* When building Objective-C++, we are not linking against the C front-end - and so need to replicate the C tree-construction functions in some way. */ -#ifdef OBJCPLUS -#define OBJCP_REMAP_FUNCTIONS -#include "objcp-decl.h" -#endif /* OBJCPLUS */ - -/* This is the default way of generating a method name. */ -/* I am not sure it is really correct. - Perhaps there's a danger that it will make name conflicts - if method names contain underscores. -- rms. */ -#ifndef OBJC_GEN_METHOD_LABEL -#define OBJC_GEN_METHOD_LABEL(BUF, IS_INST, CLASS_NAME, CAT_NAME, SEL_NAME, NUM) \ - do { \ - char *temp; \ - sprintf ((BUF), "_%s_%s_%s_%s", \ - ((IS_INST) ? "i" : "c"), \ - (CLASS_NAME), \ - ((CAT_NAME)? (CAT_NAME) : ""), \ - (SEL_NAME)); \ - for (temp = (BUF); *temp; temp++) \ - if (*temp == ':') *temp = '_'; \ - } while (0) -#endif -/* APPLE LOCAL begin radar 4862848 */ -#ifndef OBJC_FLAG_OBJC_ABI -#define OBJC_FLAG_OBJC_ABI \ - do { if (flag_objc_abi == -1) \ - flag_objc_abi = 1; \ - } while (0) -#endif -/* APPLE LOCAL end radar 4862848 */ -/* APPLE LOCAL begin radar 5023725 */ -#ifndef OBJC_FLAG_ZEROCOST_EXCEPTIONS -#define OBJC_FLAG_ZEROCOST_EXCEPTIONS -#endif -/* APPLE LOCAL end radar 5023725 */ -/* APPLE LOCAL begin radar 4531086 */ -#ifndef OBJC_WARN_OBJC2_FEATURES -#define OBJC_WARN_OBJC2_FEATURES(MESSAGE) -#endif -/* APPLE LOCAL end radar 4531086 */ - -/* APPLE LOCAL begin radar 6307941 */ -#ifndef OBJC2_ABI_DISPATCH -#define OBJC2_ABI_DISPATCH 0 -#endif -/* APPLE LOCAL end radar 6307941 */ - -/* These need specifying. */ -#ifndef OBJC_FORWARDING_STACK_OFFSET -#define OBJC_FORWARDING_STACK_OFFSET 0 -#endif - -#ifndef OBJC_FORWARDING_MIN_OFFSET -#define OBJC_FORWARDING_MIN_OFFSET 0 -#endif - -/* Set up for use of obstacks. */ - -#include "obstack.h" - -/* This obstack is used to accumulate the encoding of a data type. */ -static struct obstack util_obstack; - -/* This points to the beginning of obstack contents, so we can free - the whole contents. */ -char *util_firstobj; - -/* The version identifies which language generation and runtime - the module (file) was compiled for, and is recorded in the - module descriptor. */ - -/* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ -/* Bump version number to 7 */ -/* APPLE LOCAL mainline */ -#define OBJC_VERSION (flag_next_runtime ? 7 : 8) -/* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ -#define PROTOCOL_VERSION 2 -/* APPLE LOCAL radar 4533974 - ObjC newprotocol */ -#define NEW_PROTOCOL_VERSION 3 - -/* (Decide if these can ever be validly changed.) */ -#define OBJC_ENCODE_INLINE_DEFS 0 -#define OBJC_ENCODE_DONT_INLINE_DEFS 1 - -/*** Private Interface (procedures) ***/ - -/* Used by compile_file. */ - -static void init_objc (void); -static void finish_objc (void); - -/* Code generation. */ - -static tree objc_build_constructor (tree, tree); -/* APPLE LOCAL radar 6307941 */ -static tree build_objc_method_call (int, tree, tree, tree, tree, tree); -static tree get_proto_encoding (tree); -static tree lookup_interface (tree); -static tree objc_add_static_instance (tree, tree); -/* APPLE LOCAL radar 5168496 */ -static bool objc_is_object_id (tree); - -static tree start_class (enum tree_code, tree, tree, tree); -static tree continue_class (tree); -static void finish_class (tree); -static void start_method_def (tree); -/* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ -#ifdef OBJCPLUS -static void objc_start_function (tree, tree, tree, tree, tree); -#else -static void objc_start_function (tree, tree, tree, struct c_arg_info *, tree); -#endif -/* APPLE LOCAL end radar 5839812 - location for synthesized methods */ -/* APPLE LOCAL radar 4947311 - protocol attributes */ -static tree start_protocol (tree, tree, tree); -static tree build_method_decl (enum tree_code, tree, tree, tree, bool); -/* APPLE LOCAL C* language */ -static tree objc_add_method (tree, tree, int, int); -static tree add_instance_variable (tree, int, tree); -static tree build_ivar_reference (tree); -static tree is_ivar (tree, tree); - -/* APPLE LOCAL begin objc new property */ -static bool objc_lookup_protocol (tree, tree, tree, bool); -/* APPLE LOCAL radar 5277239 */ -static tree lookup_method_static (tree, tree, int, bool, bool); -/* APPLE LOCAL radar 4817072 */ -static void objc_lookup_property_ivar (tree, tree); -/* APPLE LOCAL end objc new property */ -static void build_objc_exception_stuff (void); -static void build_next_objc_exception_stuff (void); -/* APPLE LOCAL radar 5285911 */ -static tree nested_ivar_lookup (tree, tree); - -/* APPLE LOCAL radar 4431864 */ -static void objc_set_global_decl_fields (tree); -/* APPLE LOCAL begin ObjC GC */ -static int objc_is_strong_p (tree); -static int objc_is_gcable_p (tree); -/* APPLE LOCAL end ObjC GC */ - -/* We only need the following for ObjC; ObjC++ will use C++'s definition - of DERIVED_FROM_P. */ -#ifndef OBJCPLUS -static bool objc_derived_from_p (tree, tree); -#define DERIVED_FROM_P(PARENT, CHILD) objc_derived_from_p (PARENT, CHILD) -#endif -/* APPLE LOCAL begin C* language */ -/* code removed */ -/* APPLE LOCAL end C* language */ -/* APPLE LOCAL begin C* property (Radar 4436866) */ -static char *objc_build_property_setter_name (tree, bool); -static int match_proto_with_proto (tree, tree, int); -static char * objc_build_property_ivar_name (tree); -/* APPLE LOCAL end C* property (Radar 4436866) */ -static void objc_xref_basetypes (tree, tree); -/* APPLE LOCAL radar 5376125 */ -static void objc_warn_direct_ivar_access (tree, tree); - -/* APPLE LOCAL begin ObjC new abi */ -static void build_v2_class_template (void); -static void build_v2_protocol_template (void); -static void build_message_ref_template (void); -/* APPLE LOCAL radar 6307941 */ -static tree build_v2_build_objc_method_call (int, tree, tree, tree, tree, tree, bool); -/* APPLE LOCAL radar 4695109 */ -static void build_v2_protocol_reference (tree); -/* APPLE LOCAL radar 5153561 */ -static void init_UOBJC2_EHTYPE_decls (void); -static void create_ivar_offset_name (char *, tree, tree); -static void build_v2_category_template (void); -/* APPLE LOCAL radar 4533974 - ObjC new protocol - radar 6351990 */ -static tree build_protocollist_reference_decl (tree); -static void objc_add_to_category_list_chain (tree); -static void objc_add_to_nonlazy_category_list_chain (tree); -/* APPLE LOCAL begin radar 4441049 */ -static void hash_name_enter (hash *, tree); -static tree hash_name_lookup (hash *, tree); -/* APPLE LOCAL end radar 4441049 */ -/* APPLE LOCAL end ObjC new abi */ -/* APPLE LOCAL C* language */ -static void build_objc_fast_enum_state_type (void); - -static void build_class_template (void); -static void build_selector_template (void); -static void build_category_template (void); -static void build_super_template (void); -/* APPLE LOCAL begin ObjC new abi - radar 4695109 */ -static tree build_protocol_initializer (tree, tree, tree, tree, tree, bool, tree, tree, tree); -/* APPLE LOCAL end ObjC new abi - radar 4695109 */ - -static tree get_class_ivars (tree, bool); -static tree generate_protocol_list (tree); -static void build_protocol_reference (tree); - -#ifdef OBJCPLUS -static void objc_generate_cxx_cdtors (void); -#endif -/* APPLE LOCAL begin radar 4359757 */ -static size_t hash_func (tree); -static void hash_add_attr (hash, tree); -static hash hash_ident_lookup (hash *, tree); -static hash hash_ident_enter (hash *, tree); -/* APPLE LOCAL end radar 4359757 */ - -/* APPLE LOCAL radar 3803157 - objc attribute */ -static void objc_decl_method_attributes (tree*, tree, int); -static const char *synth_id_with_class_suffix (const char *, tree); - -/* APPLE LOCAL begin radar 4548636 */ -static void objc_warn_on_class_attributes (tree, bool); -static void objc_attach_attrs_to_type (tree, tree); -/* APPLE LOCAL end radar 4548636 */ -/* APPLE LOCAL radar 4664707 */ -static tree objc_create_named_tmp_var (tree, const char *); -/* APPLE LOCAL radar 2848255 */ -static tree objc2_eh_runtime_type (tree); -/* APPLE LOCAL radar 4982951 */ -static tree objc_v2_ivar_reference (tree); -/* APPLE LOCAL radar 5277239 */ -static tree receiver_is_class_object (tree, int, int); - -/* APPLE LOCAL radar 5040740 */ -static tree lookup_nested_method (tree, tree); - -/* APPLE LOCAL begin radar 5607453 */ -static bool objc_is_object_id (tree); -static bool objc_is_class_id (tree); -/* APPLE LOCAL end radar 5607453 */ -/* Hash tables to manage the global pool of method prototypes. */ - -hash *nst_method_hash_list = 0; -hash *cls_method_hash_list = 0; -/* APPLE LOCAL begin radar 4359757 */ -hash *class_nst_method_hash_list = 0; -hash *class_cls_method_hash_list = 0; -hash *class_names_hash_list = 0; -hash *meth_var_names_hash_list = 0; -hash *meth_var_types_hash_list = 0; -hash *prop_names_attr_hash_list = 0; -hash *sel_ref_hash_list = 0; -/* APPLE LOCAL end radar 4359757 */ - -/* APPLE LOCAL begin radar 4345837 */ -hash *cls_name_hash_list = 0; -hash *als_name_hash_list = 0; -/* APPLE LOCAL end radar 4345837 */ - -/* APPLE LOCAL radar 4441049 */ -hash *ivar_offset_hash_list = 0; - -/* APPLE LOCAL begin radar 4345837 */ -static void hash_class_name_enter (hash *, tree, tree); -static hash hash_class_name_lookup (hash *, tree); -/* APPLE LOCAL end radar 4345837 */ -static hash hash_lookup (hash *, tree); -static tree lookup_method (tree, tree); -/* APPLE LOCAL C* property (Radar 4436866) */ -static inline tree lookup_category (tree, tree); - -enum string_section -{ - class_names, /* class, category, protocol, module names */ - meth_var_names, /* method and variable names */ - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - meth_var_types, /* method and variable type descriptors */ - prop_names_attr /* property names and their attributes. */ - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ -}; - -static tree add_objc_string (tree, enum string_section); -/* APPLE LOCAL do not create an unreferenced decl */ -static tree build_objc_string_ident (enum string_section); -static void build_selector_table_decl (void); - -/* Protocol additions. */ - -static tree lookup_protocol (tree); -/* APPLE LOCAL radar 4398221 */ -static tree lookup_and_install_protocols (tree, bool); -/* APPLE LOCAL radar 4869979 */ -static int conforms_to_protocol (tree, tree); - -/* Type encoding. */ - -static void encode_type_qualifiers (tree); -static void encode_type (tree, int, int); -static void encode_field_decl (tree, int, int); - -#ifdef OBJCPLUS -static void really_start_method (tree, tree); -#else -static void really_start_method (tree, struct c_arg_info *); -#endif -static int comp_proto_with_proto (tree, tree, int); -/* APPLE LOCAL begin 4209854 */ -/* APPLE LOCAL radar 6307941 */ -static tree get_arg_type_list (tree, tree, int, int); -static tree objc_decay_parm_type (tree); -/* APPLE LOCAL end 4209854 */ -static void objc_push_parm (tree); -#ifdef OBJCPLUS -static tree objc_get_parm_info (int); -#else -static struct c_arg_info *objc_get_parm_info (int); -#endif - -/* Utilities for debugging and error diagnostics. */ - -static void warn_with_method (const char *, int, tree); -static char *gen_type_name (tree); -static char *gen_type_name_0 (tree); -static char *gen_method_decl (tree); -static char *gen_declaration (tree); - -/* Everything else. */ - -/* APPLE LOCAL begin C* property metadata (Radar 4498373) */ -static tree start_var_decl (tree, const char *); -static void finish_var_decl (tree, tree); -/* APPLE LOCAL end C* property metadata (Radar 4498373) */ -static tree create_field_decl (tree, const char *); -static void add_class_reference (tree); -static void build_protocol_template (void); -static tree encode_method_prototype (tree); -static void generate_classref_translation_entry (tree); -static void handle_class_ref (tree); -static void generate_struct_by_value_array (void) - ATTRIBUTE_NORETURN; -static void mark_referenced_methods (void); -static void generate_objc_image_info (void); - -/*** Private Interface (data) ***/ - -/* Reserved tag definitions. */ - -#define OBJECT_TYPEDEF_NAME "id" -#define CLASS_TYPEDEF_NAME "Class" - -#define TAG_OBJECT "objc_object" -#define TAG_CLASS "objc_class" -#define TAG_SUPER "objc_super" -#define TAG_SELECTOR "objc_selector" - -#define UTAG_CLASS "_objc_class" -#define UTAG_IVAR "_objc_ivar" -#define UTAG_IVAR_LIST "_objc_ivar_list" -#define UTAG_METHOD "_objc_method" -#define UTAG_METHOD_LIST "_objc_method_list" -#define UTAG_CATEGORY "_objc_category" -#define UTAG_MODULE "_objc_module" -#define UTAG_SYMTAB "_objc_symtab" -#define UTAG_SUPER "_objc_super" -#define UTAG_SELECTOR "_objc_selector" - -#define UTAG_PROTOCOL "_objc_protocol" -#define UTAG_METHOD_PROTOTYPE "_objc_method_prototype" -#define UTAG_METHOD_PROTOTYPE_LIST "_objc__method_prototype_list" - -/* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ -#define UTAG_CLASS_EXT "_objc_class_ext" -#define UTAG_PROPERTY_LIST "_prop_list_t" -#define UTAG_PROTOCOL_EXT "_objc_protocol_extension" -/* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - -/* Note that the string object global name is only needed for the - NeXT runtime. */ -#define STRING_OBJECT_GLOBAL_FORMAT "_%sClassReference" -/* APPLE LOCAL radar 4719165 */ -#define STRING_V2_OBJECT_GLOBAL_FORMAT "OBJC_CLASS_$_%s" -/* APPLE LOCAL radar 4894756 */ -#define STRING_V2_IVAR_OFFSET_PREFIX "OBJC_IVAR_$_" -/* APPLE LOCAL radar 5008110 */ -#define STRING_V2_OBJC_EHTYPE_PREFIX "OBJC_EHTYPE_$" - -#define PROTOCOL_OBJECT_CLASS_NAME "Protocol" - -/* APPLE LOCAL begin ObjC new abi */ -#define UTAG_V2_CLASS "_class_t" -#define UTAG_V2_CLASS_RO "_class_ro_t" -#define UTAG_V2_PROTOCOL_LIST "_protocol_list_t" -#define UTAG_V2_PROTOCOL "_protocol_t" -/* APPLE LOCAL end ObjC new abi */ - -static const char *TAG_GETCLASS; -static const char *TAG_GETMETACLASS; -static const char *TAG_MSGSEND; -static const char *TAG_MSGSENDSUPER; -/* The NeXT Objective-C messenger may have two extra entry points, for use - when returning a structure. */ -static const char *TAG_MSGSEND_STRET; -static const char *TAG_MSGSENDSUPER_STRET; -static const char *default_constant_string_class_name; -/* APPLE LOCAL radar 4666559 */ -static const struct gcc_debug_hooks *save_default_debug_hooks; -/* APPLE LOCAL radar 5932809 - copyable byref blocks */ -static int donot_warn_missing_methods; - -/* Runtime metadata flags. */ -#define CLS_FACTORY 0x0001L -#define CLS_META 0x0002L -/* APPLE LOCAL radar 5142207 */ -#define IS_CLS_META(X) ((X & 0x0003) == CLS_META) -#define CLS_HAS_CXX_STRUCTORS 0x2000L -/* APPLE LOCAL radar 4923634 */ -#define OBJC2_CLS_HAS_CXX_STRUCTORS 0x0004L -/* APPLE LOCAL begin radar 5142207 */ -#define CLS_HIDDEN 0x20000 -#define OBJC2_CLS_HIDDEN 0x10 -/* APPLE LOCAL end radar 5142207 */ - -#define OBJC_MODIFIER_STATIC 0x00000001 -#define OBJC_MODIFIER_FINAL 0x00000002 -#define OBJC_MODIFIER_PUBLIC 0x00000004 -#define OBJC_MODIFIER_PRIVATE 0x00000008 -#define OBJC_MODIFIER_PROTECTED 0x00000010 -#define OBJC_MODIFIER_NATIVE 0x00000020 -#define OBJC_MODIFIER_SYNCHRONIZED 0x00000040 -#define OBJC_MODIFIER_ABSTRACT 0x00000080 -#define OBJC_MODIFIER_VOLATILE 0x00000100 -#define OBJC_MODIFIER_TRANSIENT 0x00000200 -#define OBJC_MODIFIER_NONE_SPECIFIED 0x80000000 - -/* NeXT-specific tags. */ - -#define TAG_MSGSEND_NONNIL "objc_msgSendNonNil" -#define TAG_MSGSEND_NONNIL_STRET "objc_msgSendNonNil_stret" -#define TAG_EXCEPTIONEXTRACT "objc_exception_extract" -#define TAG_EXCEPTIONTRYENTER "objc_exception_try_enter" -#define TAG_EXCEPTIONTRYEXIT "objc_exception_try_exit" -#define TAG_EXCEPTIONMATCH "objc_exception_match" -#define TAG_EXCEPTIONTHROW "objc_exception_throw" -#define TAG_SYNCENTER "objc_sync_enter" -#define TAG_SYNCEXIT "objc_sync_exit" -#define TAG_SETJMP "_setjmp" -#define UTAG_EXCDATA "_objc_exception_data" -/* APPLE LOCAL radar 4280641 */ -#define TAG_MSGSEND_FPRET "objc_msgSend_fpret" - -/* APPLE LOCAL begin radar 4426814 */ -#define TAG_ASSIGN_WEAK "objc_assign_weak" -#define TAG_READ_WEAK "objc_read_weak" -/* APPLE LOCAL end radar 4426814 */ -/* APPLE LOCAL radar 3742561 */ -#define TAG_MEMMOVE_COLLECTABLE "objc_memmove_collectable" - -#define TAG_ASSIGNIVAR "objc_assign_ivar" -#define TAG_ASSIGNGLOBAL "objc_assign_global" -#define TAG_ASSIGNSTRONGCAST "objc_assign_strongCast" - -/* Branch entry points. All that matters here are the addresses; - functions with these names do not really exist in libobjc. */ - -#define TAG_MSGSEND_FAST "objc_msgSend_Fast" -#define TAG_ASSIGNIVAR_FAST "objc_assign_ivar_Fast" - -/* APPLE LOCAL begin radar 4590221 */ -#ifndef OFFS_MSGSEND_FAST -#define OFFS_MSGSEND_FAST 0 -#endif -#ifndef OFFS_ASSIGNIVAR_FAST -#define OFFS_ASSIGNIVAR_FAST 0 -#endif -/* APPLE LOCAL end radar 4590221 */ - -#define TAG_CXX_CONSTRUCT ".cxx_construct" -#define TAG_CXX_DESTRUCT ".cxx_destruct" - -/* GNU-specific tags. */ - -#define TAG_EXECCLASS "__objc_exec_class" -#define TAG_GNUINIT "__objc_gnu_init" - -/* Flags for lookup_method_static(). */ -#define OBJC_LOOKUP_CLASS 1 /* Look for class methods. */ -#define OBJC_LOOKUP_NO_SUPER 2 /* Do not examine superclasses. */ - -/* The OCTI_... enumeration itself is in objc/objc-act.h. */ -tree objc_global_trees[OCTI_MAX]; - -static void handle_impent (struct imp_entry *); - -struct imp_entry *imp_list = 0; -int imp_count = 0; /* `@implementation' */ -int cat_count = 0; /* `@category' */ - -enum tree_code objc_inherit_code; -int objc_public_flag; - -/* APPLE LOCAL C* language */ -static int objc_method_optional_flag = 0; -/* APPLE LOCAL begin C* property (Radar 4436866, 4591909) */ -static bool property_readonly; -static tree property_getter; -static tree property_setter; -/* APPLE LOCAL end C* property (Radar 4436866, 4591909) */ -/* APPLE LOCAL begin objc new property */ -static bool property_readwrite; -static bool property_assign; -static bool property_retain; -static bool property_copy; -/* APPLE LOCAL end objc new property */ -/* APPLE LOCAL radar 4947014 - objc atomic property */ -static bool property_atomic; -/* Use to generate method labels. */ -static int method_slot = 0; - -/* APPLE LOCAL begin radar 4291785 */ -static int objc_collecting_ivars = 0; -/* APPLE LOCAL end radar 4291785 */ - -#define BUFSIZE 1024 - -static char *errbuf; /* Buffer for error diagnostics */ - -/* Data imported from tree.c. */ - -extern enum debug_info_type write_symbols; - -/* Data imported from toplev.c. */ - -extern const char *dump_base_name; -/* APPLE LOCAL radar 5130983 */ -int lvalue_or_else (tree*, enum lvalue_use); - -static int flag_typed_selectors; - -/* Store all constructed constant strings in a hash table so that - they get uniqued properly. */ - -struct string_descriptor GTY(()) -{ - /* The literal argument . */ - tree literal; - - /* The resulting constant string. */ - tree constructor; -}; - -static GTY((param_is (struct string_descriptor))) htab_t string_htab; - -/* APPLE LOCAL begin radar 4204796 */ -/* struct volatilized_type and volatilized_htab removed */ -/* APPLE LOCAL end radar 4204796 */ - -FILE *gen_declaration_file; - -/* APPLE LOCAL begin radar 5002848 */ -/* Tells "encode_pointer" that we are encoding for a property type. */ -static int generating_property_type_encoding = 0; -/* APPLE LOCAL end radar 5002848 */ - -/* Tells "encode_pointer/encode_aggregate" whether we are generating - type descriptors for instance variables (as opposed to methods). - Type descriptors for instance variables contain more information - than methods (for static typing and embedded structures). */ - -static int generating_instance_variables = 0; - -/* Some platforms pass small structures through registers versus - through an invisible pointer. Determine at what size structure is - the transition point between the two possibilities. */ - -static void -generate_struct_by_value_array (void) -{ - tree type; - tree field_decl, field_decl_chain; - int i, j; - int aggregate_in_mem[32]; - int found = 0; - - /* Presumably no platform passes 32 byte structures in a register. */ - for (i = 1; i < 32; i++) - { - char buffer[5]; - - /* Create an unnamed struct that has `i' character components */ - type = start_struct (RECORD_TYPE, NULL_TREE); - - strcpy (buffer, "c1"); - field_decl = create_field_decl (char_type_node, - buffer); - field_decl_chain = field_decl; - - for (j = 1; j < i; j++) - { - sprintf (buffer, "c%d", j + 1); - field_decl = create_field_decl (char_type_node, - buffer); - chainon (field_decl_chain, field_decl); - } - finish_struct (type, field_decl_chain, NULL_TREE); - - aggregate_in_mem[i] = aggregate_value_p (type, 0); - if (!aggregate_in_mem[i]) - found = 1; - } - - /* We found some structures that are returned in registers instead of memory - so output the necessary data. */ - if (found) - { - for (i = 31; i >= 0; i--) - if (!aggregate_in_mem[i]) - break; - printf ("#define OBJC_MAX_STRUCT_BY_VALUE %d\n\n", i); - - /* The first member of the structure is always 0 because we don't handle - structures with 0 members */ - printf ("static int struct_forward_array[] = {\n 0"); - - for (j = 1; j <= i; j++) - printf (", %d", aggregate_in_mem[j]); - printf ("\n};\n"); - } - - exit (0); -} - -bool -objc_init (void) -{ -/* APPLE LOCAL begin ARM 5726269 */ -#ifdef OBJC_TARGET_FLAG_OBJC_ABI - OBJC_TARGET_FLAG_OBJC_ABI; -#endif -/* APPLE LOCAL end ARM 5726269 */ - /* APPLE LOCAL radar 4862848 */ - OBJC_FLAG_OBJC_ABI; - /* APPLE LOCAL begin radar 4531086 */ - if (flag_objc_abi == 2) - OBJC_WARN_OBJC2_FEATURES ("the new objc abi"); - /* APPLE LOCAL end radar 4531086 */ -#ifdef OBJCPLUS - if (cxx_init () == false) -#else - if (c_objc_common_init () == false) -#endif - return false; - -#ifndef USE_MAPPED_LOCATION - /* Force the line number back to 0; check_newline will have - raised it to 1, which will make the builtin functions appear - not to be built in. */ - input_line = 0; -#endif - - /* If gen_declaration desired, open the output file. */ - if (flag_gen_declaration) - { - register char * const dumpname = concat (dump_base_name, ".decl", NULL); - gen_declaration_file = fopen (dumpname, "w"); - if (gen_declaration_file == 0) - fatal_error ("can't open %s: %m", dumpname); - free (dumpname); - } - - if (flag_next_runtime) - { - /* APPLE LOCAL begin ARM hybrid objc-2.0 */ - /* APPLE LOCAL radar 6307941 */ - /* code removed. */ - TAG_GETCLASS = "objc_getClass"; - TAG_GETMETACLASS = "objc_getMetaClass"; - TAG_MSGSEND = "objc_msgSend"; - /* APPLE LOCAL begin radar 6307941 */ - TAG_MSGSENDSUPER = flag_objc_abi==2 ? "objc_msgSendSuper2" - : "objc_msgSendSuper"; - TAG_MSGSEND_STRET = "objc_msgSend_stret"; - TAG_MSGSENDSUPER_STRET = flag_objc_abi==2 ? "objc_msgSendSuper2_stret" - : "objc_msgSendSuper_stret"; - /* APPLE LOCAL end radar 6307941 */ - /* APPLE LOCAL end ARM hybrid objc-2.0 */ - default_constant_string_class_name = "NSConstantString"; - /* APPLE LOCAL begin radar 4810609 */ - if (flag_objc_gc_only) - flag_objc_gc = 1; - /* APPLE LOCAL end radar 4810609 */ - /* APPLE LOCAL begin radar 4949034 */ -#ifdef OBJCPLUS - /* APPLE LOCAL begin radar 5809596 */ - /* For all objc ABIs -fobjc-call-cxx-cdtors is on by default. */ - if (flag_objc_call_cxx_cdtors == -1) - flag_objc_call_cxx_cdtors = 1; - /* APPLE LOCAL end radar 5809596 */ -#endif - /* APPLE LOCAL end radar 4949034 */ - } - else - { - TAG_GETCLASS = "objc_get_class"; - TAG_GETMETACLASS = "objc_get_meta_class"; - TAG_MSGSEND = "objc_msg_lookup"; - TAG_MSGSENDSUPER = "objc_msg_lookup_super"; - /* GNU runtime does not provide special functions to support - structure-returning methods. */ - default_constant_string_class_name = "NXConstantString"; - flag_typed_selectors = 1; - } - - init_objc (); - -/* APPLE LOCAL begin radar 2848255 - radar 5153561 */ -#ifdef OBJCPLUS - if (flag_objc_zerocost_exceptions) - { - lang_eh_runtime_type = objc2_eh_runtime_type; - init_UOBJC2_EHTYPE_decls (); - } -#endif -/* APPLE LOCAL end radar 2848255 - radar 5153561 */ - if (print_struct_values) - generate_struct_by_value_array (); - - return true; -} - -void -objc_finish_file (void) -{ - mark_referenced_methods (); - -#ifdef OBJCPLUS - /* We need to instantiate templates _before_ we emit ObjC metadata; - if we do not, some metadata (such as selectors) may go missing. */ - /* APPLE LOCAL begin radar 4721858 */ - { - /* APPLE LOCAL radar 4874626 */ - location_t locus = input_location; - emit_instantiate_pending_templates (&locus); - } - /* APPLE LOCAL end radar 4721858 */ -#endif - - /* Finalize Objective-C runtime data. No need to generate tables - and code if only checking syntax, or if generating a PCH file. */ - if (!flag_syntax_only && !pch_file) - finish_objc (); - - if (gen_declaration_file) - fclose (gen_declaration_file); - -#ifdef OBJCPLUS - cp_finish_file (); -#endif -} - -/* Return the first occurrence of a method declaration corresponding - to sel_name in rproto_list. Search rproto_list recursively. - If is_class is 0, search for instance methods, otherwise for class - methods. */ -static tree -lookup_method_in_protocol_list (tree rproto_list, tree sel_name, - int is_class) -{ - tree rproto, p; - tree fnd = 0; - - for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) - { - p = TREE_VALUE (rproto); - - if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) - { - /* APPLE LOCAL begin radar 4550413 */ - fnd = lookup_method (is_class - ? PROTOCOL_CLS_METHODS (p) - : PROTOCOL_NST_METHODS (p), sel_name); - if (!fnd) - fnd = lookup_method (is_class - ? PROTOCOL_OPTIONAL_CLS_METHODS (p) - : PROTOCOL_OPTIONAL_NST_METHODS (p), sel_name); - if (!fnd && PROTOCOL_LIST (p)) - /* APPLE LOCAL end radar 4550413 */ - fnd = lookup_method_in_protocol_list (PROTOCOL_LIST (p), - sel_name, is_class); - } - else - { - ; /* An identifier...if we could not find a protocol. */ - } - - if (fnd) - return fnd; - } - - return 0; -} - -static tree -lookup_protocol_in_reflist (tree rproto_list, tree lproto) -{ - tree rproto, p; - - /* Make sure the protocol is supported by the object on the rhs. */ - if (TREE_CODE (lproto) == PROTOCOL_INTERFACE_TYPE) - { - tree fnd = 0; - for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) - { - p = TREE_VALUE (rproto); - - if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) - { - if (lproto == p) - fnd = lproto; - - else if (PROTOCOL_LIST (p)) - fnd = lookup_protocol_in_reflist (PROTOCOL_LIST (p), lproto); - } - - if (fnd) - return fnd; - } - } - else - { - ; /* An identifier...if we could not find a protocol. */ - } - - return 0; -} - -/* APPLE LOCAL begin radar 7865106 */ -static bool objc_class_weak_import(tree class) -{ - tree chain; - gcc_assert (class && TREE_CODE (class) == CLASS_INTERFACE_TYPE); - for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) - if (is_attribute_p ("weak_import", TREE_PURPOSE (chain))) - return true; - return false; -} - -static char* -objc_build_weak_reference_internal_classname (tree ident, bool metaclass) -{ - static char string[BUFSIZE]; - sprintf (string, ".weak_reference %s_%s", !metaclass ? "_OBJC_CLASS_$" - : "_OBJC_METACLASS_$", - IDENTIFIER_POINTER (ident)); - return string; -} -/* APPLE LOCAL end radar 7865106 */ - -void -/* APPLE LOCAL radar 4548636 */ -objc_start_class_interface (tree class, tree super_class, tree protos, tree attributes) -{ - objc_interface_context - = objc_ivar_context - = start_class (CLASS_INTERFACE_TYPE, class, super_class, protos); -/* APPLE LOCAL begin radar 4548636 */ - CLASS_ATTRIBUTES (objc_interface_context) = attributes; - objc_warn_on_class_attributes (objc_interface_context, false); -/* APPLE LOCAL end radar 4548636 */ - /* APPLE LOCAL begin radar 7865106 */ - if (flag_objc_abi == 2 && objc_class_weak_import(objc_interface_context)) { - const char * name = - objc_build_weak_reference_internal_classname(CLASS_NAME(objc_interface_context) , 0); - tree asm_str = build_string(strlen(name), name); - cgraph_add_asm_node(asm_str); - name = objc_build_weak_reference_internal_classname(CLASS_NAME(objc_interface_context) , 1); - asm_str = build_string(strlen(name), name); - cgraph_add_asm_node(asm_str); - } - /* APPLE LOCAL end radar 7865106 */ - objc_public_flag = 0; -} - -void -objc_start_category_interface (tree class, tree categ, tree protos) -{ - /* APPLE LOCAL begin radar 4994854 */ - if (categ == NULL_TREE) - { - /* Anonymous category. Check if it is a continuation anonymous category? */ - tree class_category_is_assoc_with = lookup_interface (class); - if (class_category_is_assoc_with) - { - tree cat = lookup_category (class_category_is_assoc_with, NULL_TREE); - if (cat) - { - /* This is a continuation anonymous category. Use the first declaration. */ - objc_interface_context = cat; - objc_ivar_chain = continue_class (objc_interface_context); - return; - } - } - } - /* APPLE LOCAL end radar 4994854 */ - objc_interface_context - = start_class (CATEGORY_INTERFACE_TYPE, class, categ, protos); - objc_ivar_chain - = continue_class (objc_interface_context); -} - -void -/* APPLE LOCAL radar 4947311 - protocol attributes */ -objc_start_protocol (tree name, tree protos, tree prefix_attrs) -{ - objc_interface_context - /* APPLE LOCAL radar 4947311 - protocol attributes */ - = start_protocol (name, protos, prefix_attrs); - /* APPLE LOCAL C* language */ - objc_method_optional_flag = 0; -} - -void -objc_continue_interface (void) -{ - /* APPLE LOCAL begin radar 4666559 */ - /* Since we may add additional ivars for @property declarations, - do not output any debug info. for class type as yet. */ - gcc_assert (TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE); - save_default_debug_hooks = debug_hooks; - debug_hooks = &do_nothing_debug_hooks; - /* APPLE LOCAL end radar 4666559 */ - objc_ivar_chain - = continue_class (objc_interface_context); - /* APPLE LOCAL radar 4666559 */ - debug_hooks = save_default_debug_hooks; -} - -void -objc_finish_interface (void) -{ - finish_class (objc_interface_context); - /* APPLE LOCAL begin radar 4666559 */ - if (TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE) - { - tree record = CLASS_STATIC_TEMPLATE (objc_interface_context); - /* Now output debug info. Since ivar list is now complete. */ - gcc_assert (record); -#ifdef OBJCPLUS - push_lang_context (lang_name_c); -#endif /* OBJCPLUS */ - rest_of_type_compilation (record, 1); - if (flag_debug_only_used_symbols && TYPE_STUB_DECL (record)) - TREE_USED (TYPE_STUB_DECL (record)) = 1; -#ifdef OBJCPLUS - pop_lang_context (); -#endif /* OBJCPLUS */ - } - /* APPLE LOCAL end radar 4666559 */ - objc_interface_context = NULL_TREE; - /* APPLE LOCAL C* language */ - objc_method_optional_flag = 0; -} - -void -objc_start_class_implementation (tree class, tree super_class) -{ - objc_implementation_context - = objc_ivar_context - = start_class (CLASS_IMPLEMENTATION_TYPE, class, super_class, NULL_TREE); - objc_public_flag = 0; -} - -void -objc_start_category_implementation (tree class, tree categ) -{ - objc_implementation_context - = start_class (CATEGORY_IMPLEMENTATION_TYPE, class, categ, NULL_TREE); - objc_ivar_chain - = continue_class (objc_implementation_context); -} - -void -objc_continue_implementation (void) -{ - objc_ivar_chain - = continue_class (objc_implementation_context); -} - -void -objc_finish_implementation (void) -{ -#ifdef OBJCPLUS - if (flag_objc_call_cxx_cdtors) - objc_generate_cxx_cdtors (); -#endif - - if (objc_implementation_context) - { - finish_class (objc_implementation_context); - objc_ivar_chain = NULL_TREE; - objc_implementation_context = NULL_TREE; - } - else - warning (0, "%<@end%> must appear in an @implementation context"); -} - -void -objc_set_visibility (int visibility) -{ - objc_public_flag = visibility; -} - -/* APPLE LOCAL begin C* language */ -void -objc_set_method_opt (int optional) -{ - objc_method_optional_flag = optional; - if (!objc_interface_context - || TREE_CODE (objc_interface_context) != PROTOCOL_INTERFACE_TYPE) - { - error ("@optional/@required is allowed in @protocol context only."); - objc_method_optional_flag = 0; - } -} - -/* This routine gather property attribute information from attribute - portion of a property declaration. */ - -void -objc_set_property_attr (int attr, tree ident) -{ - static char string[BUFSIZE]; - switch (attr) - { - case 0: /* init */ - property_readonly = false; - property_setter = property_getter = NULL_TREE; - property_readwrite = property_assign = property_retain = property_copy = false; - /* APPLE LOCAL radar 4947014 - objc atomic property */ - property_atomic = true; - break; - case 1: /* readonly */ - property_readonly = true; - break; - case 2: /* getter = ident */ - if (property_getter != NULL_TREE) - error("getter attribute can be specified only once"); - property_getter = ident; - break; - case 3: /* setter = ident */ - if (property_setter != NULL_TREE) - error("setter attribute can be specified only once"); - /* setters always have a trailing ':' in their name. In fact, this is the - only syntax that parser recognizes for a setter name. Must add a trailing - ':' here so name matches that of the declaration of user instance method - for the setter. */ - sprintf (string, "%s:", IDENTIFIER_POINTER (ident)); - property_setter = get_identifier (string);; - break; - case 9: /* readwrite */ - property_readwrite = true; - break; - case 10: /* assign */ - property_assign = true; - break; - case 11: /* retain */ - property_retain = true; - break; - case 12: /* copy */ - property_copy = true; - break; - /* APPLE LOCAL begin radar 4947014 - objc atomic property */ - case 13: /* nonatomic */ - property_atomic = false; - break; - /* APPLE LOCAL end radar 4947014 - objc atomic property */ - default: - break; - } -} - -/* APPLE LOCAL begin radar 5168496 */ -/* Return TRUE if object of TYPE pointer type requires explicit memory management. - This is reserved for objctivec-c object pointers; such as 'id'. */ -static bool -managed_objc_object_pointer (tree type) -{ - return type && type != error_mark_node && POINTER_TYPE_P (type) - && (objc_is_object_id (TREE_TYPE (type)) || TYPED_OBJECT (TREE_TYPE (type)) - /* APPLE LOCAL radar 6255671 */ - || TREE_CODE (type) == BLOCK_POINTER_TYPE); -} -/* APPLE LOCAL end radar 5168496 */ - -/* This routine declares a 'setter' method for property X in class CLASS. */ -static void -objc_add_property_setter_method (tree class, tree x) -{ - tree type = TREE_TYPE (x); - tree key_name, arg_type, arg_name; - tree setter_decl, selector; - tree ret_type = build_tree_list (NULL_TREE, void_type_node); - tree mth; - /* setter name. */ - key_name = get_identifier (objc_build_property_setter_name ( - PROPERTY_NAME (x), false)); - arg_type = build_tree_list (NULL_TREE, type); - arg_name = get_identifier ("_value"); - /* APPLE LOCAL radar 4157812 */ - selector = objc_build_keyword_decl (key_name, arg_type, arg_name, NULL_TREE); - /* APPLE LOCAL radar 5839812 - location for synthesized methods */ - DECL_SOURCE_LOCATION (selector) = DECL_SOURCE_LOCATION (x); - setter_decl = build_method_decl (INSTANCE_METHOD_DECL, - ret_type, selector, - build_tree_list (NULL_TREE, NULL_TREE), - false); - /* APPLE LOCAL radar 4712415 */ - TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x); - mth = lookup_method (CLASS_NST_METHODS (class), - METHOD_SEL_NAME (setter_decl)); - if (PROPERTY_IVAR_NAME (x) - && (mth = lookup_method (CLASS_NST_METHODS (class), - METHOD_SEL_NAME (setter_decl)))) - { - /* user declared accessor is encounterred. This is error. */ - error ("user accessor %<%c%s%> not allowed for property %qs", - '-', IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)), - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - } - else - /* APPLE LOCAL radar 4653422 */ - objc_add_method (class, setter_decl, false, OPTIONAL_PROPERTY (x)); - METHOD_PROPERTY_CONTEXT (setter_decl) = x; - return; -} - -/* This routine builds a 'property_decl' tree node and adds it to the list - of such properties in the current class. It also checks for duplicates. */ - -void -objc_add_property_variable (tree decl) -{ - tree property_decl; - tree x; - - /* APPLE LOCAL radar 4531086 */ - OBJC_WARN_OBJC2_FEATURES ("property"); - if (DECL_INITIAL (decl) || TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) - { - error ("bad property declaration"); - return; - } - if (objc_implementation_context) - { - error ("property cannot be declared inside @implementation context"); - return; - } - else if (!objc_interface_context) - { - fatal_error ("property declaration not in @interface or @implementation context"); - return; - } - - property_decl = make_node (PROPERTY_DECL); - TREE_TYPE (property_decl) = TREE_TYPE (decl); - - PROPERTY_NAME (property_decl) = DECL_NAME (decl); - PROPERTY_GETTER_NAME (property_decl) = property_getter; - PROPERTY_SETTER_NAME (property_decl) = property_setter; - PROPERTY_READONLY (property_decl) = property_readonly - ? boolean_true_node - : boolean_false_node; - PROPERTY_IVAR_NAME (property_decl) = NULL_TREE; - PROPERTY_DYNAMIC (property_decl) = NULL_TREE; - /* APPLE LOCAL radar 4712415 */ - TREE_DEPRECATED (property_decl) = TREE_DEPRECATED (decl); - /* APPLE LOCAL radar 4653422 */ - OPTIONAL_PROPERTY (property_decl) = objc_method_optional_flag; - /* assign, retain and copy are mutually exclusive. */ - if ((property_assign && property_retain) - || (property_assign && property_copy) - || (property_retain && property_copy)) - { - error ("assign, retain and copy are mutually exclusive"); - property_copy = property_retain = false; - } - else if (!property_assign && !property_retain && !property_copy - && !property_readonly - /* APPLE LOCAL radar 5168496 */ - && managed_objc_object_pointer (TREE_TYPE (property_decl))) - { - /* For -fobjc-gc-only, a warning is issued under more restricted condition. See below. */ - if (!flag_objc_gc_only && warn_property_assign_default) - warning (0, "no 'assign', 'retain', or 'copy' attribute is specified - 'assign' is assumed"); - } - - /* readwrite is the default */ - if (!property_readonly) - property_readwrite = true; - /* readonly and readwrite are mutually exclusive. */ - else if (property_readwrite) - { - error ("readonly and readwrite are mutually exclusive"); - property_readwrite = false; - PROPERTY_READONLY (property_decl) = boolean_false_node; - } - PROPERTY_COPY (property_decl) = property_copy - ? boolean_true_node - : boolean_false_node; - PROPERTY_RETAIN (property_decl) = property_retain - ? boolean_true_node - : boolean_false_node; - PROPERTY_READWRITE (property_decl) = property_readwrite - ? boolean_true_node - : boolean_false_node; - /* APPLE LOCAL radar 4947014 - objc atomic property */ - ATOMIC_PROPERTY (property_decl) = property_atomic; - - if (objc_interface_context) - { - /* Doing the property in interface declaration. */ - if (PROPERTY_ASSIGN (property_decl)) - { - /* APPLE LOCAL radar 5168496 */ - if (managed_objc_object_pointer (TREE_TYPE (property_decl))) - { - /* APPLE LOCAL begin radar 4855821 */ - if (!flag_objc_gc) - { - /* APPLE LOCAL begin radar 6255671 */ - if (!property_assign) - { - if (TREE_CODE (TREE_TYPE (property_decl)) == BLOCK_POINTER_TYPE) - error ("assign attribute (default) not appropriate for non-gc object property %qs", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl))); - else - warning (0, "assign attribute (default) not appropriate for non-gc object property %qs", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl))); - } - /* APPLE LOCAL end radar 6255671 */ - } - /* APPLE LOCAL end radar 4855821 */ - else if (!property_assign) - { - /* under -fobjc-gc[-only], a warning should be issued if none of those were specified - AND the object type conforms to <NSCopying>. */ - tree ltyp = TREE_TYPE (property_decl); - /* APPLE LOCAL begin radar 6379842 */ - /* under -fobjc-gc-only flag, a warning to be issued if - block pointer property does not have 'copy' attribute. */ - if (flag_objc_gc_only - && TREE_CODE (ltyp) == BLOCK_POINTER_TYPE - && !property_copy) - warning (0, "'copy' attribute must be specified for the block" - " property %qs when -fobjc-gc-only is specified", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl))); - /* APPLE LOCAL end radar 6379842 */ - do - ltyp = TREE_TYPE (ltyp); - while (POINTER_TYPE_P (ltyp)); - /* APPLE LOCAL begin radar 5607453 */ - /* APPLE LOCAL radar 5096644 */ - if (TYPE_HAS_OBJC_INFO (ltyp) - && !objc_is_object_id (ltyp) && !objc_is_class_id (ltyp) - && TREE_CODE (TYPE_OBJC_INTERFACE (ltyp)) != IDENTIFIER_NODE) - /* APPLE LOCAL end radar 5607453 */ - { - tree id_NSCopying = get_identifier ("NSCopying"); - tree lproto = lookup_protocol (id_NSCopying); - /* APPLE LOCAL radar 4947311 - protocol attributes */ - objc_declare_protocols (tree_cons (NULL_TREE, id_NSCopying, NULL_TREE), NULL_TREE); - /* APPLE LOCAL begin radar 5096644 */ - if (lproto && TREE_CODE (lproto) == PROTOCOL_INTERFACE_TYPE - && objc_lookup_protocol (lproto , TYPE_OBJC_INTERFACE (ltyp), ltyp, false)) - /* APPLE LOCAL begin radar 5698469 */ - warning (0, "%s'assign' attribute on property %qs which implements 'NSCopying' " - "protocol not appropriate with %s", - !property_assign ? "default " : "", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)), - flag_objc_gc_only ? "-fobjc-gc-only" : "-fobjc-gc"); - /* APPLE LOCAL end radar 5698469 */ - /* APPLE LOCAL end radar 5096644 */ - } - } - } - } - - /* must check for duplicate property declarations. */ - for (x = CLASS_PROPERTY_DECL (objc_interface_context); x; x = TREE_CHAIN (x)) - { - if (PROPERTY_NAME (x) == DECL_NAME (decl)) - { - error ("%Jduplicate property declaration %qD", decl, decl); - return; - } - } - - /* APPLE LOCAL begin radar 4965989 */ - /* New property's anonymous category */ - if (ANONYMOUS_CATEGORY (objc_interface_context)) - { - /* @interface INTF() ... @end */ - tree class = lookup_interface (CLASS_NAME (objc_interface_context)); - if (class) - { - /* Find the property in the class. */ - for (x = CLASS_PROPERTY_DECL (class); x; x = TREE_CHAIN (x)) - if (PROPERTY_NAME (x) == DECL_NAME (decl)) - break; - if (x) - { - if (PROPERTY_READONLY (x) == boolean_true_node - && PROPERTY_READWRITE (property_decl) == boolean_true_node) - { - /* APPLE LOCAL begin radar 5159695 */ - if ((PROPERTY_ASSIGN (x) != PROPERTY_ASSIGN (property_decl)) - || (PROPERTY_RETAIN (x) != PROPERTY_RETAIN (property_decl)) - || (PROPERTY_COPY (x) != PROPERTY_COPY (property_decl)) - || (IS_ATOMIC (x) != IS_ATOMIC (property_decl))) - warning (0, "property %qs attribute in %qs class continuation" - " does not match class %qs property", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)), - IDENTIFIER_POINTER (CLASS_NAME (class)), - IDENTIFIER_POINTER (CLASS_NAME (class))); - /* APPLE LOCAL end radar 5159695 */ - - /* class property is now 'readwrite'. */ - PROPERTY_READONLY (x) = boolean_false_node; - PROPERTY_READWRITE (x) = boolean_true_node; - PROPERTY_COPY (x) = PROPERTY_COPY (property_decl); - PROPERTY_RETAIN (x) = PROPERTY_RETAIN (property_decl); - PROPERTY_SETTER_NAME (x) = PROPERTY_SETTER_NAME (property_decl); - } - else - error ("use class continuation to override %<readonly%> property %qs with %<readwrite%> in class %qs", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)), - IDENTIFIER_POINTER (CLASS_NAME (class))); - - /* APPLE LOCAL begin radar 5159707 */ - if (!comptypes (TREE_TYPE (x), TREE_TYPE (property_decl))) - { - warning (0, "property %qs type in %qs class continuation does not match class %qs property", - IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)), - IDENTIFIER_POINTER (CLASS_NAME (class)), - IDENTIFIER_POINTER (CLASS_NAME (class))); - TREE_TYPE (property_decl) = TREE_TYPE (x); - } - /* APPLE LOCAL end radar 5159707 */ - } - /* APPLE LOCAL begin radar 4994854 */ - else - { - /* Inject anonymous categories property declaration into promary class. */ - tree save_objc_interface_context = objc_interface_context; - objc_interface_context = class; - objc_add_property_variable (decl); - objc_interface_context = save_objc_interface_context; - } - /* APPLE LOCAL end radar 4994854 */ - } - else - error ("anonymous category %qs has no primary class", IDENTIFIER_POINTER (CLASS_NAME (class))); - } - /* APPLE LOCAL end radar 4965989 */ - TREE_CHAIN (property_decl) = CLASS_PROPERTY_DECL (objc_interface_context); - CLASS_PROPERTY_DECL (objc_interface_context) = property_decl; - } -} - -/* This routine looks for a given PROPERTY in a list of CLASS, CATEGORY, or - PROTOCOL. */ - -static tree -lookup_property_in_list (tree chain, tree property) -{ - tree x; - for (x = CLASS_PROPERTY_DECL (chain); x; x = TREE_CHAIN (x)) - if (PROPERTY_NAME (x) == property) - return x; - return NULL_TREE; -} - -/* This routine looks for a given PROPERTY in the tree chain of RPROTO_LIST. */ - -static tree -lookup_property_in_protocol_list (tree rproto_list, tree property) -{ - tree rproto, x; - for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) - { - tree p = TREE_VALUE (rproto); - if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) - { - if ((x = lookup_property_in_list (p, property))) - return x; - if (PROTOCOL_LIST (p) - && (x = lookup_property_in_protocol_list (PROTOCOL_LIST (p), property))) - return x; - } - else - { - ; /* An identifier...if we could not find a protocol. */ - } - } - return NULL_TREE; -} - -/* This routine looks up the PROPERTY in current INTERFACE, its categories and up the - chain of interface hierarchy. */ - -static tree -lookup_property (tree interface_type, tree property) -{ - tree inter = interface_type; - while (inter) - { - tree x, category; - if (TREE_CODE (inter) != CLASS_INTERFACE_TYPE) - return NULL_TREE; /* error - caller will issue it */ - if ((x = lookup_property_in_list (inter, property))) - return x; - /* Failing that, look for the property in each category of the class. */ - category = inter; - while ((category = CLASS_CATEGORY_LIST (category))) - - if ((x = lookup_property_in_list (category, property))) - return x; - - /* Failing to find in categories, look for property in protocol list. */ - if (CLASS_PROTOCOL_LIST (inter) - && (x = lookup_property_in_protocol_list ( - CLASS_PROTOCOL_LIST (inter), property))) - return x; - - /* Failing that, climb up the inheritance hierarchy. */ - inter = lookup_interface (CLASS_SUPER_NAME (inter)); - } - return inter; -} - -static tree -objc_get_inner_exp (tree t) -{ - while (TREE_CODE (t) == COMPOUND_EXPR - || TREE_CODE (t) == MODIFY_EXPR - || TREE_CODE (t) == NOP_EXPR - || TREE_CODE (t) == CONVERT_EXPR - || TREE_CODE (t) == COMPONENT_REF) - t = TREE_OPERAND (t, 0); - return t; -} - -/* APPLE LOCAL begin radar 5285911 */ -/* This routine, given RECEIVER.COMPONENT, RTYPE for type of the class for the - receiver, returns in PROP the property declaration and in INTERFACE_TYPE class - declaration. Furthermore, if CHECK_PROP_COND is true, it checks for correctness of - property use in dot syntax and issues diagnostic. If CHECK_PROP_COND is false, it assumes - that tree is a correct property access. On sucessess it returns RECEIVER. - Finally, if RECEIVER is a class object, true is returned in RECEIVER_IS_CLASS. -*/ -static tree -objc_property_access_info (tree receiver, tree component, tree rtype, - bool check_prop_cond, - tree *interface_type, tree *prop, bool *receiver_is_class) -{ - *prop = NULL_TREE; - *interface_type = NULL_TREE; - *receiver_is_class = false; - if (objc_is_id (rtype)) - { - tree rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)) - ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype)) - : NULL_TREE); - if (rprotos) - *prop = lookup_property_in_protocol_list (rprotos, component); - else - /* Could be super.property */ - { - tree t = objc_get_inner_exp (receiver); - /* APPLE LOCAL begin radar 5277239 */ - int super = (t == UOBJC_SUPER_decl); - tree class_tree = receiver_is_class_object (receiver, (t == self_decl), super); - /* CLASSNAME.class_method ? */ - if (class_tree) - { - tree class_type = lookup_interface (class_tree); - if (class_type) - { - *interface_type = class_type; - *receiver_is_class = true; - } - } - else if (super) - /* APPLE LOCAL end radar 5277239 */ - { - /* super.property */ - if (implementation_template && CLASS_SUPER_NAME (implementation_template)) - { - *interface_type = lookup_interface (CLASS_SUPER_NAME (implementation_template)); - if (*interface_type) - *prop = lookup_property (*interface_type, component); - } - } - } - } - else - { - tree basetype = TYPE_MAIN_VARIANT (rtype); - if (basetype != NULL_TREE && TREE_CODE (basetype) == POINTER_TYPE) - basetype = TREE_TYPE (basetype); - else if (check_prop_cond) - /* APPLE LOCAL begin radar 5376125 */ - { - /* Note that for objc2, this warning is issued when ivar reference - tree is generated in call to objc_v2_build_ivar_ref */ - if (!flag_objc_gc && warn_direct_ivar_access && flag_objc_abi != 2) - objc_warn_direct_ivar_access (basetype, component); - return NULL_TREE; - } - /* APPLE LOCAL end radar 5376125 */ - - while (basetype != NULL_TREE - && TREE_CODE (basetype) == RECORD_TYPE && OBJC_TYPE_NAME (basetype) - && TREE_CODE (OBJC_TYPE_NAME (basetype)) == TYPE_DECL - && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype))) - basetype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype)); - if (basetype != NULL_TREE && TYPED_OBJECT (basetype)) - { - *interface_type = TYPE_OBJC_INTERFACE (basetype); - /* Handle more user error conditions */ - if (check_prop_cond && - (!*interface_type || - (TREE_CODE (*interface_type) != CLASS_INTERFACE_TYPE - && TREE_CODE (*interface_type) != PROTOCOL_INTERFACE_TYPE - && TREE_CODE (*interface_type) != CATEGORY_INTERFACE_TYPE))) - { - /* Better error recovery */ - if (TREE_CODE (receiver) == OBJC_PROPERTY_REFERENCE_EXPR) - { - error ("accessing unknown %qs component of a property", - IDENTIFIER_POINTER (component)); - return error_mark_node; - } - return NULL_TREE; - } - *prop = lookup_property (*interface_type, component); - /* APPLE LOCAL begin radar 4959107 */ - if (!*prop && TYPE_OBJC_PROTOCOL_LIST (basetype)) - *prop = lookup_property_in_protocol_list (TYPE_OBJC_PROTOCOL_LIST (basetype), - component); - /* APPLE LOCAL end radar 4959107 */ - } - } - return receiver; -} - -/* - This routine builds the OBJC_PROPERTY_REFERENCE_EXPR for - RECEIVER.COMPONENT which later on gets transformed into a 'getter' or - 'setter' call depending on its use. -*/ - -tree -objc_build_property_reference_expr (tree receiver, tree component) -{ - tree interface_type; - tree rtype; - tree prop, prop_type, res; - bool receiver_is_class; - /* APPLE LOCAL radar 6083666 */ - tree ivar; - - if (component == error_mark_node || component == NULL_TREE - || TREE_CODE (component) != IDENTIFIER_NODE) - return NULL_TREE; - if (receiver == error_mark_node || receiver == NULL_TREE - || (rtype = TREE_TYPE (receiver)) == NULL_TREE) - return NULL_TREE; - res = objc_property_access_info (receiver, component, rtype, true, - &interface_type, &prop, &receiver_is_class); - /* These are conditions for errornous property access or not a property - access syntax. */ - if (res == NULL_TREE || res == error_mark_node) - return res; - - /* APPLE LOCAL radar 6083666 */ - prop_type = ivar = NULL_TREE; - /* APPLE LOCAL begin objc2 5512183 */ - if (interface_type && !receiver_is_class) - /* APPLE LOCAL end objc2 5512183 */ - { - /* type of the expression is either the property type or, if no property declared, - then ivar type used in receiver.ivar expression. */ - /* APPLE LOCAL radar 6083666 */ - ivar = nested_ivar_lookup (interface_type, component); - if (ivar) - prop_type = TREE_TYPE (ivar); - else - { - /* Try to get the type for the 'getter' declaration. */ - tree getter = lookup_method_static (interface_type, component, 0, false, false); - if (getter) - prop_type = TREE_VALUE (TREE_TYPE (getter)); - } - } - /* APPLE LOCAL begin radar 5277239 */ - else if (interface_type) - { - /* CLASS_NAME.getter expression. Try finding a class method and, if one not found, - attach a dummy 'int' type to the expression tree (presumably because we end up - using it on the LHS of assignment only. */ - tree getter = lookup_method_static (interface_type, component, 1, false, true); - prop_type = getter ? TREE_VALUE (TREE_TYPE (getter)) : integer_type_node; - } - /* APPLE LOCAL end radar 5277239 */ - /* APPLE LOCAL begin radar 5893391 */ - else if (!prop && objc_is_id (rtype)) - { - tree rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)) - ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype)) - : NULL_TREE); - if (rprotos) { - tree getter = lookup_method_in_protocol_list (rprotos, component, 0); - prop_type = getter ? TREE_VALUE (TREE_TYPE (getter)) : integer_type_node; - } - } - /* APPLE LOCAL end radar 5893391 */ - - /* APPLE LOCAL begin objc2 5512183 */ - if (prop) - { - /* APPLE LOCAL begin radar 6029577 */ - tree property_type = TREE_TYPE (prop); - bool comparison_result = false; - if (prop_type) - { -#ifdef OBJCPLUS - if (TREE_CODE (property_type) == REFERENCE_TYPE - || TREE_CODE (prop_type) == REFERENCE_TYPE) - { - if (TREE_CODE (property_type) == REFERENCE_TYPE) - property_type = TREE_TYPE (property_type); - if (TREE_CODE (prop_type) == REFERENCE_TYPE) - prop_type = TREE_TYPE (prop_type); - comparison_result = - !objcp_reference_related_p (prop_type, property_type); - } - else -#endif - comparison_result = comptypes (prop_type, property_type) != 1; - } - /* APPLE LOCAL begin radar 6083666 */ - if (!ivar && prop_type && comparison_result - && !objc_compare_types(property_type, prop_type, -6, NULL_TREE, NULL)) - warning (0, "type of accessor does not match the type of property %qs", - IDENTIFIER_POINTER (PROPERTY_NAME (prop))); - else - prop_type = property_type; - /* APPLE LOCAL end radar 6083666 */ - /* APPLE LOCAL end radar 6029577 */ - } - /* APPLE LOCAL end objc2 5512183 */ - - if (prop_type) - { - /* APPLE LOCAL begin 5494488 */ - tree prop_expr = build3 (OBJC_PROPERTY_REFERENCE_EXPR, prop_type, - receiver, component, UOBJC_SUPER_decl); - /* APPLE LOCAL end 5494488 */ - TREE_SIDE_EFFECTS (prop_expr) = 1; - return prop_expr; - } - else - return NULL_TREE; -} - -/* This routine generates a 'getter' call tree, using the input parameters. It returns - the CALL_EXPR tree or error_mark_node */ - -static tree -objc_build_getter_call (tree receiver, tree component) -{ - tree interface_type; - tree x; - bool receiver_is_class; - tree getter = error_mark_node; - tree rtype = TREE_TYPE (receiver); - (void)objc_property_access_info (receiver, component, rtype, false, - &interface_type, &x, &receiver_is_class); - - if (x) - { - /* Get the getter name. */ - gcc_assert (PROPERTY_NAME (x)); - if (PROPERTY_GETTER_NAME (x)) - /* If 'getter=getter_name' attribute is specified, must use the user provided - getter name in generating messaging call. */ - getter = objc_finish_message_expr (receiver, PROPERTY_GETTER_NAME (x), NULL_TREE); - else - getter = objc_finish_message_expr (receiver, PROPERTY_NAME (x), NULL_TREE); - } - else if (interface_type) - { - /* APPLE LOCAL begin radar 5277239 */ - getter = lookup_method_static (interface_type, component, receiver_is_class, - false, receiver_is_class); - /* APPLE LOCAL end radar 5277239 */ - if (getter) -#ifdef OBJCPLUS - getter = objc_build_message_expr ( - build_tree_list (receiver, - build_tree_list (component, NULL_TREE))); -#else - getter = objc_build_message_expr (build_tree_list (receiver, component)); -#endif - else - { - error ("accessing unknown %qs %s method", - IDENTIFIER_POINTER (component), receiver_is_class ? "class" : "getter"); - getter = receiver; /* recover */ - } - } - /* APPLE LOCAL begin radar 5893391 */ - else if (objc_is_id (rtype)) - { - tree rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)) - ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype)) - : NULL_TREE); - if (rprotos) { - getter = lookup_method_in_protocol_list (rprotos, component, 0); - if (getter) -#ifdef OBJCPLUS - getter = objc_build_message_expr ( - build_tree_list (receiver, build_tree_list (component, NULL_TREE))); -#else - getter = objc_build_message_expr (build_tree_list (receiver, component)); -#endif - else - { - error ("accessing unknown %qs getter method", - IDENTIFIER_POINTER (component)); - getter = receiver; /* recover */ - } - } - } - /* APPLE LOCAL end radar 5893391 */ - return getter; -} -/* APPLE LOCAL end radar 5285911 */ - -/* This routine is called with PROPERTY_IDENT being the name of the getter method, - ; user attribute specified or the default. From the getter name, it first finds - the property name and from property name it finds the setter_name; one specified - by user or the default. */ - -static const char * -objc_resolve_build_property_setter_name (tree receiver, tree property_ident) -{ - tree rtype, basetype,x,class=NULL_TREE; - bool receiver_is_class = false; - gcc_assert (receiver && TREE_TYPE (receiver)); - rtype = TREE_TYPE (receiver); - if (objc_is_id (rtype)) - { - tree t = objc_get_inner_exp (receiver); - /* APPLE LOCAL begin radar 5277239 */ - int super = (t == UOBJC_SUPER_decl); - tree class_tree = receiver_is_class_object (receiver, (t == self_decl), super); - /* CLASSNAME.class_method = rhs ? */ - if (class_tree) - { - class = lookup_interface (class_tree); - receiver_is_class = true; - } - else if (super) - /* APPLE LOCAL end radar 5277239 */ - { - /* super.property */ - if (implementation_template - && CLASS_SUPER_NAME (implementation_template)) - class = lookup_interface (CLASS_SUPER_NAME (implementation_template)); - } - } - else - { - basetype = TYPE_MAIN_VARIANT (rtype); - gcc_assert (basetype && TREE_CODE (basetype) == POINTER_TYPE); - basetype = TREE_TYPE (basetype); - while (basetype != NULL_TREE - && TREE_CODE (basetype) == RECORD_TYPE && OBJC_TYPE_NAME (basetype) - && TREE_CODE (OBJC_TYPE_NAME (basetype)) == TYPE_DECL - && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype))) - basetype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype)); - gcc_assert (basetype && TYPED_OBJECT (basetype)); - class = TYPE_OBJC_INTERFACE (basetype); - } - gcc_assert (class); - /* APPLE LOCAL begin radar 5277239 */ - if (receiver_is_class) - { - /* Direct access of a class method using the dot syntax. - Make up a 'setter' method name. */ - char *setter_name = objc_build_property_setter_name (property_ident, true); - /* A class method of the given name must exist or it is error. */ - if (!lookup_method_static (class, get_identifier (setter_name), 1, false, true)) - error ("accessing unknown %qs class method", setter_name); - return setter_name; - } - /* APPLE LOCAL end radar 5277239 */ - /* APPLE LOCAL begin radar 5390587 */ - x = lookup_property (class, property_ident); - return (x && PROPERTY_SETTER_NAME (x)) ? IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)) - : objc_build_property_setter_name - (property_ident, true); - /* APPLE LOCAL end radar 5390587 */ -} - -/* This routine builds a call to property's 'setter' function. RECEIVER is the - receiving object for 'setter'. PROPERTY_IDENT is name of the property and - RHS is the argument passed to the 'setter' function. */ - -static tree -objc_setter_func_call (tree receiver, tree property_ident, tree rhs) -{ - tree setter_argument = build_tree_list (NULL_TREE, rhs); - const char *setter_name = objc_resolve_build_property_setter_name (receiver, property_ident); - tree setter; - in_objc_property_setter_name_context = true; - setter = objc_finish_message_expr (receiver, - get_identifier (setter_name), - setter_argument); - in_objc_property_setter_name_context = false; - /* APPLE LOCAL begin radar 4838528 */ - if (TREE_CODE (setter) == CALL_EXPR && TREE_TYPE (setter) != void_type_node) - warning (0, "type of setter %qs must be 'void' instead of '%T'", - setter_name, TREE_TYPE (setter) ); - /* APPLE LOCAL end radar 4838528 */ - return setter; -} - -/* This routine builds a compound expression which implements semantics - of property's setter expression: - typeof (rhs) temp; (temp = rhs, [receiver prop_setter:temp], temp) - if rhs has no side-effect, simply generate: - ([receiver prop_setter:rhs], rhs) -*/ -static tree -objc_build_compound_setter_call (tree receiver, tree prop_ident, tree rhs) -{ - tree temp, bind, comma_exp; - if (TREE_SIDE_EFFECTS (rhs)) - { - /* To allow for correct property assignment semantics - and in accordance with C99 rules we generate: type temp; - (temp = rhs, [lhs Setter:temp], temp) */ - /* APPLE LOCAL begin radar 5279122 */ - /* APPLE LOCAL radar 6264448 */ - /* rhs = default_conversion (rhs); removed */ - temp = objc_create_named_tmp_var (TREE_TYPE (rhs), "prop"); - /* APPLE LOCAL end radar 5279122 */ - bind = build3 (BIND_EXPR, void_type_node, temp, NULL, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - /* APPLE LOCAL begin radar 7591784 */ -#ifdef OBJCPLUS - { - tree type = TREE_TYPE (rhs); - if (TYPE_NEEDS_CONSTRUCTING (type)) - { - comma_exp = temp; - error("setting a C++ non-POD object value is not implemented - assign the value to a temporary and use the temporary."); - } - else - comma_exp = build_modify_expr (temp, NOP_EXPR, rhs); - } -#else - comma_exp = build_modify_expr (temp, NOP_EXPR, rhs); -#endif - /* APPLE LOCAL end radar 7591784 */ - comma_exp = build_compound_expr (comma_exp, - objc_setter_func_call (receiver, prop_ident, temp)); - /* APPLE LOCAL begin radar 6264448 */ - /* conversion of 'temp' moved *after* it is passed ar argument to build - setter call. This is because its type must match the setter's argument - type. */ - temp = default_conversion (temp); - /* APPLE LOCAL end radar 6264448 */ - } - else - { - comma_exp = objc_setter_func_call (receiver, prop_ident, rhs); - /* APPLE LOCAL radar 5279122 */ - rhs = default_conversion (rhs); - /* APPLE LOCAL radar 5140757 */ - temp = save_expr (rhs); - /* APPLE LOCAL begin radar 4727191 */ - if (TREE_CODE (temp) == VAR_DECL) - DECL_SEEN_IN_BIND_EXPR_P (temp) = 1; - /* APPLE LOCAL end radar 4727191 */ - } - /* Suppress C++'s warning of comma-expr with no side-effect. */ - TREE_NO_WARNING (temp) = 1; - /* Suppress warning on value computed is not used */ - comma_exp = build_compound_expr (comma_exp, temp); - TREE_NO_WARNING (comma_exp) = 1; - return comma_exp; -} - -/* APPLE LOCAL begin radar 5285911 */ -bool -objc_property_reference_expr (tree expr) -{ - return (expr - && TREE_CODE (expr) == OBJC_PROPERTY_REFERENCE_EXPR); -} - -/* This routine converts a previously synthesized 'getter' function call for - a property and converts it to a 'setter' function call for the same - property. */ - -tree -objc_build_setter_call (tree lhs, tree rhs) -{ - if (objc_property_reference_expr (lhs)) - return objc_build_compound_setter_call (TREE_OPERAND (lhs, 0), - TREE_OPERAND (lhs, 1), rhs); - return NULL_TREE; -} -/* APPLE LOCAL end radar 5285911 */ - -/* This routine builds the following type: - struct _prop_t { - const char * const name; // property name - const char * const attributes; // comma-delimited, encoded, - // property attributes - }; */ - -static tree -build_v2_property_template (void) -{ - tree prop_record; - tree field_decl, field_decl_chain; - - prop_record = start_struct (RECORD_TYPE, get_identifier ("_prop_t")); - /* const char * name */ - field_decl = create_field_decl (string_type_node, "name"); - field_decl_chain = field_decl; - /* const char * attribute */ - field_decl = create_field_decl (string_type_node, "attribute"); - chainon (field_decl_chain, field_decl); - finish_struct (prop_record, field_decl_chain, NULL_TREE); - return prop_record; -} - -/* This routine builds the following type: - struct _prop_list_t { - uint32_t entsize; // sizeof (struct _prop_t) - uint32_t prop_count; - struct _prop_t prop_list [prop_count]; - } */ - -static tree -build_v2_property_list_template (tree list_type, int size) -{ - tree property_list_t_record; - tree field_decl, field_decl_chain; - - property_list_t_record = start_struct (RECORD_TYPE, NULL_TREE); - - /* uint32_t const entsize */ - field_decl = create_field_decl (integer_type_node, "entsize"); - field_decl_chain = field_decl; - - /* int prop_count */ - field_decl = create_field_decl (integer_type_node, "prop_count"); - chainon (field_decl_chain, field_decl); - - /* struct _prop_t prop_list[]; */ - field_decl = create_field_decl (build_array_type - (list_type, - build_index_type - (build_int_cst (NULL_TREE, size - 1))), - "prop_list"); - chainon (field_decl_chain, field_decl); - - finish_struct (property_list_t_record, field_decl_chain, NULL_TREE); - - return property_list_t_record; -} - -/* This routine encodes the attribute of the input PROPERTY according to following - formula: - -Property attributes are stored as a comma-delimited C string. The simple attributes -readonly and bycopy are encoded as single characters. The parametrized attributes, -getter=name, setter=name, and ivar=name, are encoded as single characters, followed -by an identifier. Property types are also encoded as a parametrized attribute. The -characters used to encode these attributes are defined by the following enumeration: - -enum PropertyAttributes { - kPropertyReadOnly = 'R', // property is read-only. - kPropertyBycopy = 'C', // property is a copy of the value last assigned - kPropertyByref = '&', // property is a reference to the value last assigned - kPropertyDynamic = 'D', // property is dynamic - kPropertyGetter = 'G', // followed by getter selector name - kPropertySetter = 'S', // followed by setter selector name - kPropertyInstanceVariable = 'V' // followed by instance variable name - kPropertyType = 't' // followed by old-style type encoding. - kPropertyWeak = 'W' // 'weak' property - kPropertyStrong = 'P' // property GC'able - kPropertyNonAtomic = 'N' // property non-atomic -}; */ - -static tree -objc_v2_encode_prop_attr (tree property) -{ - const char *string; - tree type = TREE_TYPE (property); - obstack_1grow (&util_obstack, 'T'); - /* APPLE LOCAL radar 5002848 */ - generating_property_type_encoding = 1; - encode_type (type, obstack_object_size (&util_obstack), - OBJC_ENCODE_INLINE_DEFS); - /* APPLE LOCAL radar 5002848 */ - generating_property_type_encoding = 0; - - if (PROPERTY_READONLY (property) == boolean_true_node) - obstack_grow (&util_obstack, ",R", 2); - - if (PROPERTY_COPY (property) == boolean_true_node) - obstack_grow (&util_obstack, ",C", 2); - - if (PROPERTY_RETAIN (property) == boolean_true_node) - obstack_grow (&util_obstack, ",&", 2); - - if (PROPERTY_DYNAMIC (property) == boolean_true_node) - obstack_grow (&util_obstack, ",D", 2); - - /* APPLE LOCAL begin radar 5407792 */ - if (!IS_ATOMIC (property)) - obstack_grow (&util_obstack, ",N", 2); - /* APPLE LOCAL end radar 5407792 */ - - if (PROPERTY_GETTER_NAME (property)) - { - obstack_grow (&util_obstack, ",G", 2); - string = IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (property)); - obstack_grow (&util_obstack, string, strlen (string)); - } - if (PROPERTY_SETTER_NAME (property)) - { - obstack_grow (&util_obstack, ",S", 2); - string = IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (property)); - obstack_grow (&util_obstack, string, strlen (string)); - } - if (PROPERTY_IVAR_NAME (property)) - { - obstack_grow (&util_obstack, ",V", 2); - if (PROPERTY_IVAR_NAME (property) != boolean_true_node) - string = IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (property)); - else - string = objc_build_property_ivar_name (property); - obstack_grow (&util_obstack, string, strlen (string)); - } - if (flag_objc_gc) - { - int g = objc_is_gcable_type (type); - if (g == -1) - obstack_grow (&util_obstack, ",W", 2); - else if (g == 1) - obstack_grow (&util_obstack, ",P", 2); - } - - obstack_1grow (&util_obstack, 0); /* null terminate string */ - string = obstack_finish (&util_obstack); - obstack_free (&util_obstack, util_firstobj); - return get_identifier (string); -} - -/* This routine builds the initializer list to initlize 'struct _prop_t prop_list[]' - field of 'struct _prop_list_t' meta-data. */ - -static tree -build_v2_property_table_initializer (tree type) -{ - tree x; - tree initlist = NULL_TREE; - generating_instance_variables = 1; - for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) - { - /* NOTE! sections where property name/attribute go MUST change later. */ - tree name_ident = PROPERTY_NAME (x); - tree elemlist = tree_cons (NULL_TREE, - add_objc_string (name_ident, prop_names_attr), - NULL_TREE); - tree attribute = objc_v2_encode_prop_attr (x); - elemlist = tree_cons (NULL_TREE, add_objc_string (attribute, prop_names_attr), - elemlist); - - initlist = tree_cons (NULL_TREE, - objc_build_constructor (type, nreverse (elemlist)), - initlist); - } - generating_instance_variables = 0; - return objc_build_constructor (build_array_type (type, 0), - nreverse (initlist)); -} - -/* This routine builds the 'struct _prop_list_t' variable declaration and initializes - it to its initializer list. TYPE is 'struct _prop_list_t', NAME is internal name - of this variable, SIZE is number of properties for this class and LIST is the - initializer list for its 'prop_list' field. */ - -static tree -generate_v2_property_list (tree type, const char *name, int size, tree list) -{ - tree decl, initlist; - int init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_property_template)); - - /* APPLE LOCAL begin radar 6064186 */ - const char * ref_name = synth_id_with_class_suffix (name, objc_implementation_context); - decl = start_var_decl (type, ref_name); - set_user_assembler_name (decl, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, init_val)); - initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); - initlist = tree_cons (NULL_TREE, list, initlist); - - finish_var_decl (decl, - objc_build_constructor (TREE_TYPE (decl), - nreverse (initlist))); - return decl; -} - -/* APPLE LOCAL begin radar 5082000 */ -#define OUTPUT_LAYOUT_BYTE(BYTE) \ - do { \ - obstack_1grow (&util_obstack, BYTE); \ - if (print_objc_ivar_layout) \ - { \ - if (first_nibble) \ - { \ - first_nibble = false; \ - printf ("\n%s for class \'%s\': ", \ - strong_ivar_layout ? \ - "strong ivar layout" :\ - "weak ivar layout", \ - IDENTIFIER_POINTER (CLASS_NAME (implementation_template))); \ - } \ - if (!(BYTE & 0xf0)) \ - printf ("0x0%x%s", BYTE, BYTE != 0 ? ", " : ""); \ - else \ - printf ("0x%x%s", BYTE, BYTE != 0 ? ", " : ""); \ - if (++num_nibbles > 20 \ - || BYTE == 0) \ - { printf("\n"); num_nibbles=1; }\ - } \ - } while (0); - -#define GC_IVAR_BUFSIZE_INCR 256 - -struct GC_IVAR { - unsigned int ivar_bytepos; - unsigned int ivar_size; -}; - -static struct GC_IVAR *ivar; -static struct GC_IVAR *sk_ivar; -struct skip_scan - { - unsigned int skip; - unsigned int scan; - }; -static struct skip_scan *skip_scan; -static int max_layout_buf_size = 0; - -static void -/* Routine for dynamic allocation of various byffers used by GC layout mapper. */ -adjust_max_layout_buf_size (int index) -{ - if (index < max_layout_buf_size-1) - return; - max_layout_buf_size += GC_IVAR_BUFSIZE_INCR; - ivar = (struct GC_IVAR*)xrealloc (ivar, sizeof(struct GC_IVAR) * max_layout_buf_size); - sk_ivar = (struct GC_IVAR*)xrealloc (sk_ivar, sizeof(struct GC_IVAR) * max_layout_buf_size); - skip_scan = (struct skip_scan*)xrealloc (skip_scan, sizeof(struct GC_IVAR) * max_layout_buf_size); - return; -} - -static int -ivar_bytepos_cmp (const void *a, const void *b) -{ - HOST_WIDE_INT sa = ((struct GC_IVAR *)a)->ivar_bytepos; - HOST_WIDE_INT sb = ((struct GC_IVAR *)b)->ivar_bytepos; - - if (sa < sb) - return -1; - if (sa > sb) - return 1; - return 0; -} - -/* This routine returns total count of array elements. Returns 0 if - there was an error. */ -static HOST_WIDE_INT -total_type_elements (tree type) -{ - HOST_WIDE_INT el_count = 1; - do { - tree telts = array_type_nelts (type); - if (telts && host_integerp (telts, 1)) - el_count *= (tree_low_cst (telts, 1) + 1); - else - { - /* error case, reported elsewhere. */ - el_count = 0; - break; - } - type = TREE_TYPE (type); - } while (TREE_CODE (type) == ARRAY_TYPE); - return el_count; -} -/* APPLE LOCAL end radar 5082000 */ - -/* APPLE LOCAL begin radar 6133042 */ -/* This routine checks block pointers and either returns - 1 for GCable, or -1 if they are tagged as __weak. */ -static int -block_pointer_strong_value (tree type) -{ - gcc_assert (type && TREE_CODE (type) == BLOCK_POINTER_TYPE); - type = TREE_TYPE (TREE_TYPE (type)); - while (POINTER_TYPE_P (type)) - type = TREE_TYPE (type); - return (objc_is_strong_p (type) >= 0 ? 1 : -1); -} -/* APPLE LOCAL end radar 6133042 */ - -static void -objc_build_aggregate_ivar_layout (tree aggr_type, tree field_decl, - unsigned int base_byte_pos, - bool strong_ivar_layout, - int *index, - int *sk_index, - bool *hasUnion) -{ - int iIndex = *index; - int iSkIndex = *sk_index; - unsigned int max_gc_union_ivar_size = 0; - tree max_field_decl = NULL_TREE; - unsigned int max_sk_union_ivar_size = 0; - tree max_sk_field_decl = NULL_TREE; - bool is_union = (aggr_type && TREE_CODE (aggr_type) == UNION_TYPE); - unsigned int base = 0; - /* APPLE LOCAL begin radar 5781140 */ - if (!field_decl) - return; - /* APPLE LOCAL end radar 5781140 */ - if (is_union) - base = base_byte_pos + int_byte_position (field_decl); - - do { - tree type; - int strong; - /* APPLE LOCAL objc gc 5547128 */ - - /* Unnamed bitfields are ignored. */ - if (!DECL_NAME (field_decl) || DECL_BIT_FIELD_TYPE (field_decl)) - { - /* APPLE LOCAL radar 5791701 */ - tree last_field_decl = field_decl; - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - /* APPLE LOCAL begin radar 5791701 */ - if (field_decl) - continue; - /* last field was a bitfield. Must update the skip info. */ - field_decl = last_field_decl; - /* APPLE LOCAL end radar 5791701 */ - } -#ifdef OBJCPLUS - if (TREE_CODE (field_decl) != FIELD_DECL || TREE_STATIC (field_decl)) - { - /* C++ static members, and things that are not field at all, - are not in the ivar map. */ - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - continue; - } -#endif - type = TREE_TYPE (field_decl); - if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE) - { - if (TREE_CODE (type) == UNION_TYPE) - *hasUnion = true; - objc_build_aggregate_ivar_layout (type, TYPE_FIELDS (type), - base_byte_pos + int_byte_position (field_decl), - strong_ivar_layout, - &iIndex, - &iSkIndex, - hasUnion); - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - continue; - } - /* APPLE LOCAL begin radar 5082000 */ - else if (TREE_CODE (type) == ARRAY_TYPE) - { - tree inner = TREE_TYPE (type); - while (TREE_CODE (inner) == ARRAY_TYPE) - inner = TREE_TYPE (inner); - if (TREE_CODE (inner) == UNION_TYPE) - error ("Layout for array of unions not supported"); - else if (TREE_CODE (inner) == RECORD_TYPE) - { - HOST_WIDE_INT el_count = total_type_elements (type); - HOST_WIDE_INT el_ix; - int old_iIndex = iIndex, old_iSkIndex = iSkIndex; - int first_iIndex, first_iSkIndex; - objc_build_aggregate_ivar_layout (inner, TYPE_FIELDS (inner), - base_byte_pos + int_byte_position (field_decl), - strong_ivar_layout, - &iIndex, - &iSkIndex, - hasUnion); - /* Replicate layout information for each array element. Note that - one element is already done. */ - first_iIndex = iIndex; - first_iSkIndex = iSkIndex; - for (el_ix = 1; el_ix < el_count; el_ix++) - { - int i; - int size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (inner)); - for (i = old_iIndex+1; i <= first_iIndex; ++i) - { - adjust_max_layout_buf_size (iIndex); - ivar[++iIndex].ivar_bytepos = ivar[i].ivar_bytepos + size*el_ix; - ivar[iIndex].ivar_size = ivar[i].ivar_size; - } - for (i = old_iSkIndex+1; i <= first_iSkIndex; ++i) - { - adjust_max_layout_buf_size (iSkIndex); - sk_ivar[++iSkIndex].ivar_bytepos = sk_ivar[i].ivar_bytepos + size*el_ix; - sk_ivar[iSkIndex].ivar_size = sk_ivar[i].ivar_size; - } - } - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - continue; - } - } - /* APPLE LOCAL end radar 5082000 */ - - strong = 0; - do - { - strong = objc_is_strong_p (type); - if (strong) - break; - - /* APPLE LOCAL begin objc gc 5547128 */ - if (TREE_CODE (type) == FUNCTION_TYPE - || TREE_CODE (type) == METHOD_TYPE) - break; - /* APPLE LOCAL end objc gc 5547128 */ - - if (objc_is_object_ptr (type)) - /* APPLE LOCAL begin objc gc 5547128 */ - { - strong = ((objc_is_strong_p (TREE_TYPE (type)) >= 0) ? 1 : -1); - break; - } - /* APPLE LOCAL end objc gc 5547128 */ - /* APPLE LOCAL begin radar 6133042 */ - if (TREE_CODE (type) == BLOCK_POINTER_TYPE) - { - strong = block_pointer_strong_value (type); - break; - } - /* APPLE LOCAL end radar 6133042 */ - type = TREE_TYPE (type); - } - while (!strong && type); - - if ((strong_ivar_layout && strong == 1) - || (!strong_ivar_layout && strong == -1)) - { - if (is_union) - { - unsigned int u_ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)) - / GET_MODE_SIZE (Pmode); - if (u_ivar_size > max_gc_union_ivar_size) - { - max_gc_union_ivar_size = u_ivar_size; - max_field_decl = field_decl; - } - } - else - { - adjust_max_layout_buf_size (iIndex); - ivar[++iIndex].ivar_bytepos = base_byte_pos + int_byte_position (field_decl); - ivar[iIndex].ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)) - / GET_MODE_SIZE (Pmode); - } - } - else if ((strong_ivar_layout && strong <= 0) - || (!strong_ivar_layout && strong != -1)) - { - if (is_union) - { - unsigned int u_ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); - if (u_ivar_size > max_sk_union_ivar_size) - { - max_sk_union_ivar_size = u_ivar_size; - max_sk_field_decl = field_decl; - } - } - else - { - adjust_max_layout_buf_size (iSkIndex); - sk_ivar[++iSkIndex].ivar_bytepos = base_byte_pos + int_byte_position (field_decl); - sk_ivar[iSkIndex].ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); - } - } - - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - } - while (field_decl); - if (max_field_decl) - { - adjust_max_layout_buf_size (iIndex); - ivar[++iIndex].ivar_bytepos = base_byte_pos + int_byte_position (max_field_decl); - ivar[iIndex].ivar_size = max_gc_union_ivar_size; - } - if (max_sk_field_decl) - { - adjust_max_layout_buf_size (iSkIndex); - sk_ivar[++iSkIndex].ivar_bytepos = base_byte_pos + int_byte_position (max_sk_field_decl); - sk_ivar[iSkIndex].ivar_size = max_sk_union_ivar_size; - } - *index = iIndex; - *sk_index = iSkIndex; -} - - -/* This routine builds the ivar_layout (when STRONG_IVAR_LAYOUT is true), or otherwise - weak_ivar_layout and returns it in a c-string. The layout map displays which words - in ivar list must be skipped and which must be scanned by GC (see below). - String is built of bytes. Each byte is divided up in two nibbles (4-bit each). Left - nibble is count of words to skip and right nibble is count of words to scan. So, each - nibble represents up to 15 workds to skip or scan. Skipping the rest is represented - by a 0x00 byte which also ends the string. - - 1. when STRONG_IVAR_LAYOUT is true, following ivars are scanned: - - id, Class - - object * - - __strong anything - - 2. When STRONG_IVAR_LAYOUT is false, following ivars are scanned: - - __weak anything -*/ - -static tree -objc_build_ivar_layout (bool strong_ivar_layout) -{ - tree field_decl; - unsigned int words_to_skip, words_to_scan; - int i; - int iIndex = -1; - int iSkIndex = -1; - int iSkip_scan; - unsigned char byte; - const char *string; - bool hasUnion, bytesSkipped; - int num_nibbles = 0; - bool first_nibble = true; - /* APPLE LOCAL radar 6003871 */ - tree retval; - - if (!flag_objc_gc || !implementation_template) - return NULL_TREE; - - field_decl = CLASS_IVARS (implementation_template); - if (CLASS_SUPER_NAME (implementation_template)) - { - /* Must build an ivar-list of all ivars in the inheritiance hierarchy. */ - tree interface = implementation_template; - field_decl = copy_list (field_decl); - while (CLASS_SUPER_NAME (interface)) - { - interface = lookup_interface (CLASS_SUPER_NAME (interface)); - field_decl = chainon (copy_list (CLASS_IVARS (interface)), - field_decl); - } - } - if (!field_decl) - return NULL_TREE; - - hasUnion = false; - if (max_layout_buf_size == 0) - { - gcc_assert (ivar == NULL && sk_ivar == NULL && skip_scan == NULL); - adjust_max_layout_buf_size (GC_IVAR_BUFSIZE_INCR); - } - objc_build_aggregate_ivar_layout (NULL_TREE, field_decl, 0, strong_ivar_layout, - &iIndex, &iSkIndex, &hasUnion); - - if (iIndex == -1) - { - /* Skip everything */ - return NULL_TREE; - } - - /* Must sort on byte position in case we encounterred a union nested in - the ivar list. */ - if (hasUnion && iIndex > 0) - qsort (ivar, iIndex+1, sizeof (struct GC_IVAR), ivar_bytepos_cmp); - - if (hasUnion && iSkIndex > 0) - qsort (sk_ivar, iSkIndex+1, sizeof (struct GC_IVAR), ivar_bytepos_cmp); - - /* Now build the string of skip/scan nibbles */ - /* Initialization */ - iSkip_scan = -1; - - if (ivar[0].ivar_bytepos == 0) - { - words_to_skip = 0; - words_to_scan = ivar[0].ivar_size; - } - else - { - words_to_skip = ivar[0].ivar_bytepos / GET_MODE_SIZE (Pmode); - words_to_scan = ivar[0].ivar_size; - } - - for (i=1; i <= iIndex; i++) - { - unsigned int tail_prev_gc_obj = ivar[i-1].ivar_bytepos + - ivar[i-1].ivar_size * GET_MODE_SIZE (Pmode); - if (ivar[i].ivar_bytepos == tail_prev_gc_obj) - { - /* consecutive 'scanned' object pointers. */ - words_to_scan += ivar[i].ivar_size; - } - else - { - /* Skip over 'gc'able object pointer which lay over each other. */ - if (tail_prev_gc_obj > ivar[i].ivar_bytepos) - continue; - /* Must skip over 1 or more words. We save current skip/scan values - and start a new pair. */ - adjust_max_layout_buf_size (iSkip_scan); - skip_scan[++iSkip_scan].skip = words_to_skip; - skip_scan[iSkip_scan].scan = words_to_scan; - /* APPLE LOCAL begin radar 5109807 */ - /* Skip the hole */ - skip_scan[++iSkip_scan].skip = (ivar[i].ivar_bytepos - tail_prev_gc_obj) - / GET_MODE_SIZE (Pmode); - skip_scan[iSkip_scan].scan = 0; - words_to_skip = 0; - /* APPLE LOCAL end radar 5109807 */ - words_to_scan = ivar[i].ivar_size; - } - } - if (words_to_scan > 0) - { - adjust_max_layout_buf_size (iSkip_scan); - skip_scan[++iSkip_scan].skip = words_to_skip; - skip_scan[iSkip_scan].scan = words_to_scan; - } - /* APPLE LOCAL begin radar 5251019 */ - bytesSkipped = false; - if (iSkIndex >= 0) - { - int lastByteSkipped = sk_ivar[iSkIndex].ivar_bytepos + sk_ivar[iSkIndex].ivar_size; - int lastByteScanned = ivar[iIndex].ivar_bytepos + ivar[iIndex].ivar_size * GET_MODE_SIZE (Pmode); - bytesSkipped = (lastByteSkipped > lastByteScanned); - /* Compute number of bytes to skip at the tail end of the last ivar scanned. */ - if (bytesSkipped) - { - unsigned int totalWord = (lastByteSkipped + (GET_MODE_SIZE (Pmode) -1)) - / GET_MODE_SIZE (Pmode); - adjust_max_layout_buf_size (iSkip_scan); - skip_scan[++iSkip_scan].skip = totalWord - (lastByteScanned / GET_MODE_SIZE (Pmode)); - skip_scan[iSkip_scan].scan = 0; - } - } - /* APPLE LOCAL end radar 5251019 */ - - /* APPLE LOCAL begin radar 5259868 */ - /* Mini optimization of nibbles such that an 0xM0 followed by 0x0N is produced - as 0xMN. */ - for (i = 0; i <= iSkip_scan; i++) - { - if (i < iSkip_scan) - { - if (skip_scan[i].skip && skip_scan[i].scan == 0 - && skip_scan[i+1].skip == 0 && skip_scan[i+1].scan) - { - /* 0xM0 followed by 0x0N detected. */ - int j; - skip_scan[i].scan = skip_scan[i+1].scan; - for (j = i+1; j < iSkip_scan; j++) - skip_scan[j] = skip_scan[j+1]; - --iSkip_scan; - } - } - } - /* APPLE LOCAL end radar 5259868 */ - /* Now generate the string */ - for (i = 0; i <= iSkip_scan; i++) - { - unsigned int skip_small = skip_scan[i].skip % 0xf; - unsigned int scan_small = skip_scan[i].scan % 0xf; - unsigned int skip_big = skip_scan[i].skip / 0xf; - unsigned int scan_big = skip_scan[i].scan / 0xf; - unsigned int ix; - if (skip_small > 0 || skip_big > 0) - bytesSkipped = true; - /* APPLE LOCAL begin radar 5217964 */ - /* first skip big. */ - for (ix = 0; ix < skip_big; ix++) - OUTPUT_LAYOUT_BYTE (0xf0); - - /* next (skip small, scan) */ - if (skip_small) - { - byte = skip_small << 4; - if (scan_big > 0) - { - byte |= 0xf; - --scan_big; - } - else if (scan_small) - { - byte |= scan_small; - scan_small = 0; - } - OUTPUT_LAYOUT_BYTE (byte); - } - /* next scan big */ - for (ix = 0; ix < scan_big; ix++) - OUTPUT_LAYOUT_BYTE (0x0f); - /* last scan small */ - if (scan_small) - { - byte = scan_small; - OUTPUT_LAYOUT_BYTE (byte); - } - /* APPLE LOCAL end radar 5217964 */ - } - OUTPUT_LAYOUT_BYTE (0); /* null terminate string */ - string = obstack_finish (&util_obstack); - /* APPLE LOCAL begin radar 6003871 */ - /* if ivar_layout bitmap is all 1 bits (nothing skipped) then use NULL as - final layout. */ - retval = (strong_ivar_layout && !bytesSkipped) - ? NULL_TREE - : add_objc_string (get_identifier (string), class_names); - obstack_free (&util_obstack, util_firstobj); - return retval; - /* APPLE LOCAL end radar 6003871 */ -} - -/** - This routine build following type: - - struct _objc_protocol_extension - { - uint32_t size; // sizeof (struct _objc_protocol_extension) - struct objc_method_list *optional_instance_methods; - struct objc_method_list *optional_class_methods; - struct objc_prop_list *instance_properties; - } -*/ - -static void build_objc_protocol_extension_template (void) -{ - tree field_decl, field_decl_chain; - - objc_protocol_extension_template = start_struct (RECORD_TYPE, - get_identifier (UTAG_PROTOCOL_EXT)); - /* uint32_t size; */ - field_decl = create_field_decl (integer_type_node, "size"); - field_decl_chain = field_decl; - - /* struct objc_method_list *optional_instance_methods; */ - field_decl = create_field_decl (objc_method_list_ptr, "optional_instance_methods"); - chainon (field_decl_chain, field_decl); - - /* struct objc_method_list *optional_class_methods; */ - field_decl = create_field_decl (objc_method_list_ptr, "optional_class_methods"); - chainon (field_decl_chain, field_decl); - - /* struct objc_prop_list *instance_properties; */ - field_decl = create_field_decl (objc_prop_list_ptr, "instance_properties"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_protocol_extension_template, field_decl_chain, NULL_TREE); -} - -static tree -generate_objc_protocol_extension (tree proto_interface, tree optional_instance_meth, - tree optional_class_meth, tree instance_prop) -{ - int size; - tree decl, initlist, expr; - - if (!optional_instance_meth && !optional_class_meth && !instance_prop) - return NULL_TREE; - - if (!objc_protocol_extension_template) - build_objc_protocol_extension_template (); - - /* uint32_t size */ - size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_protocol_extension_template)); - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); - - /* struct objc_method_list *optional_instance_methods; */ - if (!optional_instance_meth) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_list_ptr, build_unary_op (ADDR_EXPR, - optional_instance_meth, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* struct objc_method_list *optional_class_methods; */ - if (!optional_class_meth) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_list_ptr, build_unary_op (ADDR_EXPR, - optional_class_meth, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* struct objc_prop_list *instance_properties; */ - if (!instance_prop) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_prop_list_ptr, integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_prop_list_ptr, build_unary_op (ADDR_EXPR, - instance_prop, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - decl = start_var_decl (objc_protocol_extension_template, - synth_id_with_class_suffix - ("_OBJC_PROTOCOLEXT", proto_interface)); - expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); - finish_var_decl (decl, expr); - return decl; -} - -/* This routine build following struct type: - struct _objc_class_ext - { - uint32_t size; // sizeof(struct _objc_class_ext) - const char *weak_ivar_layout; - struct _prop_list_t *properties; - } -*/ - -static void -build_objc_class_ext_template (void) -{ - tree field_decl, field_decl_chain; - - objc_class_ext_template = start_struct (RECORD_TYPE, - get_identifier (UTAG_CLASS_EXT)); - - /* uint32_t size; */ - field_decl = create_field_decl (integer_type_node, "size"); - field_decl_chain = field_decl; - - /* const char *weak_ivar_layout; */ - field_decl = create_field_decl (string_type_node, "weak_ivar_layout"); - chainon (field_decl_chain, field_decl); - - /* struct _prop_list_t *properties; */ - field_decl - = create_field_decl (build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier(UTAG_PROPERTY_LIST))), - "properties"); - chainon (field_decl_chain, field_decl); - finish_struct (objc_class_ext_template, field_decl_chain, NULL_TREE); -} - -/* This routine declares UOBJC_CLASS_EXT_decl and initializes its 'size', - 'weak_ivar_layout' (with WEAK_IVAR_LAYOUT) and 'properties' (with - PROPERTY_LIST). -*/ - -static tree -generate_objc_class_ext (tree property_list) -{ - tree decl, initlist, expr; - int size; - tree weak_ivar_layout_tree; - - /* const char *weak_ivar_layout */ - weak_ivar_layout_tree = objc_build_ivar_layout (false); - if (!property_list && !weak_ivar_layout_tree) - return NULL_TREE; - - if (!objc_class_ext_template) - build_objc_class_ext_template (); - - /* uint32_t size */ - size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_class_ext_template)); - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); - - initlist = tree_cons (NULL_TREE, - (!weak_ivar_layout_tree ? integer_zero_node - : weak_ivar_layout_tree), - initlist); - - /* struct _prop_list_t *properties; */ - if (!property_list) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_prop_list_ptr, integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_prop_list_ptr, - build_unary_op (ADDR_EXPR, property_list, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - decl = start_var_decl (objc_class_ext_template, - synth_id_with_class_suffix - ("_OBJC_CLASSEXT", objc_implementation_context)); - expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); - finish_var_decl (decl, expr); - return decl; -} - -/* Top-level routine to generate property tables for each implementation. - PROTOCOL, if not NULL, is the PROTOCOL_INTERFACE_TYPE of the protocol - whose property meta-data must be generated, via @implementation <protoname> - syntax. */ - -static void -generate_v2_property_tables (tree protocol) -{ - tree x, initlist, property_list_template; - int size = 0; - x = protocol ? CLASS_PROPERTY_DECL (protocol) - : IMPL_PROPERTY_DECL (objc_implementation_context); - for (; x; x = TREE_CHAIN (x)) - size++; - - if (size == 0) - { - UOBJC_V2_PROPERTY_decl = NULL_TREE; - return; - } - - if (!objc_v2_property_template) - objc_v2_property_template = build_v2_property_template (); - property_list_template = build_v2_property_list_template (objc_v2_property_template, - size); - initlist - = build_v2_property_table_initializer (objc_v2_property_template); - /* A property meta-data can be generated via @implementation <protoname> or - via implementation of an interface where properties are declaraed. Make sure - name of property meta-data is unique for each case. */ - UOBJC_V2_PROPERTY_decl = generate_v2_property_list ( - property_list_template, - /* APPLE LOCAL begin radar 6064186 */ - protocol ? "l_OBJC_$_PROP_PROTO_LIST" - : "l_OBJC_$_PROP_LIST", - /* APPLE LOCAL end radar 6064186 */ - size, initlist); -} - -/* This routine merges properties undeclared in implementation from its interface - declaration. */ - -static void -objc_v2_merge_property (void) -{ - tree property_decl; - tree interface = NULL_TREE; - tree x, y; - - gcc_assert (objc_implementation_context); - interface = lookup_interface (CLASS_NAME (objc_implementation_context)); - /* May be null due to some previously declared diagnostic. */ - if (!interface) - return; - - if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - interface = lookup_category (interface, - CLASS_SUPER_NAME (objc_implementation_context)); - if (!interface) - return; - } - - /* Check for properties declared in interface but not in implementations. - These are 'dynamic' properties. */ - for (x = CLASS_PROPERTY_DECL (interface); x; x = TREE_CHAIN (x)) - { - for (y = IMPL_PROPERTY_DECL (objc_implementation_context); y; y = TREE_CHAIN (y)) - if (PROPERTY_NAME (x) == PROPERTY_NAME (y)) - break; - if (y) - continue; - else - { - property_decl = copy_node (x); - /* Add the property to the list of properties for current implementation. */ - TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); - IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; - continue; - } - /* 'x' is dynamic propeperty. Add it to the list of properties for this - implementation. */ - property_decl = make_node (PROPERTY_DECL); - TREE_TYPE (property_decl) = TREE_TYPE (x); - PROPERTY_NAME (property_decl) = PROPERTY_NAME (x); - PROPERTY_READONLY (property_decl) = PROPERTY_READONLY (x); - PROPERTY_DYNAMIC (property_decl) = PROPERTY_DYNAMIC (x); - PROPERTY_GETTER_NAME (property_decl) = NULL_TREE; - PROPERTY_SETTER_NAME (property_decl) = NULL_TREE; - PROPERTY_IVAR_NAME (property_decl) = PROPERTY_IVAR_NAME (x); - /* Add the property to the list of properties for current implementation. */ - TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); - IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; - } - return; -} -/* APPLE LOCAL end C* language */ - -void -objc_set_method_type (enum tree_code type) -{ - objc_inherit_code = (type == PLUS_EXPR - ? CLASS_METHOD_DECL - : INSTANCE_METHOD_DECL); -} - - -/* APPLE LOCAL begin radar 6307941 */ -/* Non-legacy dispatch is a performance optimization only. - Using the "wrong" dispatch is not a correctness problem, - assuming non-legacy dispatch is supported at all. - - SnowLeopard: only the selectors below are optimized by the runtime. - Other selectors should use legacy dispatch to save memory. -*/ -static const char * const nonlegacy_dispatched_selectors[] = { - "allocWithZone:", - "alloc", - "class", - "self", - "isKindOfClass:", - "respondsToSelector:", - "isFlipped", - "length", - "objectForKey:", - "count", - "objectAtIndex:", - "isEqualToString:", - "isEqual:", - "retain", - "release", - "autorelease", - "hash", - "addObject:", - "countByEnumeratingWithState:objects:count:", -}; - -static int -objc_legacy_dispatched_selector_p (tree sel_name) -{ - gcc_assert (flag_objc_abi == 2); - gcc_assert (sel_name); - if (flag_objc_legacy_dispatch) - return true; - if (OBJC2_ABI_DISPATCH) - /* Do this for Snow Leopard ot later only. */ - return false; - else { - size_t i, count; - const char *sel_cname = IDENTIFIER_POINTER (sel_name); - count = sizeof(nonlegacy_dispatched_selectors) / sizeof(nonlegacy_dispatched_selectors[0]); - for (i = 0; i < count; i++) - { - if (!strcmp (sel_cname, nonlegacy_dispatched_selectors[i])) - return false; - } - } - return true; -} -/* APPLE LOCAL end radar 6307941 */ - -tree -objc_build_method_signature (tree rettype, tree selector, - tree optparms, bool ellipsis) -{ - return build_method_decl (objc_inherit_code, rettype, selector, - optparms, ellipsis); -} - -/* APPLE LOCAL begin radar 4869979 */ -/* Return 'true' if chain of attributes includes 'bycopy' */ -static bool -objc_type_has_bycopy_attr (tree list) -{ - tree p; - for (p = list; p; p = TREE_CHAIN (p)) - { - tree v = TREE_VALUE (p); - if (v && TREE_CODE (v) == IDENTIFIER_NODE - && !strcmp (IDENTIFIER_POINTER (v), "bycopy")) - return true; - } - return false; -} - -/* This routine issues a warning if instance method declaration has a 'bycopy' - attribute of an object which does not include 'NSCoding' protocol. */ -static void -objc_diagnose_bycopy_type (tree decl) -{ - tree type = TREE_TYPE (decl); - if (type && TREE_CODE (type) == TREE_LIST) - { - tree p = TREE_PURPOSE (type); - if (p && TREE_CODE (p) == TREE_LIST) - { - if (objc_type_has_bycopy_attr (p)) - { - tree intf; - tree objc_class = objc_is_object_ptr (TREE_VALUE (type)); - if (objc_class && objc_is_class_name (objc_class) - && (intf = lookup_interface (objc_class))) - { - tree proto = lookup_protocol (get_identifier ("NSCoding")); - if (proto && !conforms_to_protocol (intf, proto)) - warning (0, "\"bycopy\" specified on instance method type of '%T' that does not conform to \"NSCoding\" protocol", - TREE_VALUE (type)); - } - } - } - } -} -/* APPLE LOCAL end radar 4869979 */ - -void -/* APPLE LOCAL radar 3803157 - objc attribute */ -objc_add_method_declaration (tree decl, tree attributes) -{ - /* APPLE LOCAL begin radar 4157812 */ - if (decl == error_mark_node) - return; - /* APPLE LOCAL end radar 4157812 */ - - if (!objc_interface_context) - fatal_error ("method declaration not in @interface context"); - - /* APPLE LOCAL radar 3803157 - objc attribute */ - objc_decl_method_attributes (&decl, attributes, 0); - /* APPLE LOCAL begin C* language */ - objc_add_method (objc_interface_context, - decl, - objc_inherit_code == CLASS_METHOD_DECL, - objc_method_optional_flag); - /* APPLE LOCAL end C* language */ - /* APPLE LOCAL begin radar 4869979 */ - if (objc_interface_context && - TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE - && objc_inherit_code == INSTANCE_METHOD_DECL) - objc_diagnose_bycopy_type (decl); - /* APPLE LOCAL end radar 4869979 */ -} - -/* APPLE LOCAL begin deprecated use in deprecated 6425499 */ -static tree fast_lookup_method (int is_class, tree class, tree method_ident); -/* APPLE LOCAL end deprecated use in deprecated 6425499 */ - -void -/* APPLE LOCAL radar 3803157 - objc attribute */ -objc_start_method_definition (tree decl, tree attributes) -{ - /* APPLE LOCAL begin deprecated use in deprecated 6425499 */ - tree class; - /* APPLE LOCAL end deprecated use in deprecated 6425499 */ - - if (!objc_implementation_context) - fatal_error ("method definition not in @implementation context"); - - /* APPLE LOCAL begin radar 4290840 */ - if (decl != NULL_TREE && METHOD_SEL_NAME (decl) == error_mark_node) - return; - /* APPLE LOCAL end radar 4290840 */ - - /* APPLE LOCAL begin radar 4219590 */ -#ifndef OBJCPLUS - /* Indicate no valid break/continue context by setting these variables - to some non-null, non-label value. We'll notice and emit the proper - error message in c_finish_bc_stmt. */ - c_break_label = c_cont_label = size_zero_node; -#endif - /* APPLE LOCAL end radar 4219590 */ - - /* APPLE LOCAL begin radar 4529765 */ - if (attributes) - warning (0, "method attribute may be specified on method declarations only"); - /* APPLE LOCAL end radar 4529765 */ - /* APPLE LOCAL begin radar 5424416 */ - if (TREE_TYPE (decl) && TREE_CODE (TREE_TYPE (decl)) == TREE_LIST) - { - tree type = TREE_VALUE (TREE_TYPE (decl)); - if (type) - { - if (TREE_CODE (type) == FUNCTION_TYPE) - { - error ("%qs declared as method returning a function", - IDENTIFIER_POINTER (DECL_NAME (decl))); - } - else if (TREE_CODE (type) == ARRAY_TYPE) - { - error ("%qs declared as method returning an array", - IDENTIFIER_POINTER (DECL_NAME (decl))); - } - } - } - /* APPLE LOCAL end radar 5424416 */ - /* APPLE LOCAL radar 3803157 - objc attribute */ - objc_decl_method_attributes (&decl, attributes, 0); - objc_add_method (objc_implementation_context, - decl, - /* APPLE LOCAL C* language */ - objc_inherit_code == CLASS_METHOD_DECL, 0); - /* APPLE LOCAL begin deprecated use in deprecated 6425499 */ - /* We have to copy the TREE_DEPRECATED bit from the interface. */ - class = lookup_interface (CLASS_NAME (objc_implementation_context)); - if (class) - { - tree decl2 = fast_lookup_method (objc_inherit_code == CLASS_METHOD_DECL, - class, - METHOD_SEL_NAME (decl)); - if (decl2) - TREE_DEPRECATED (decl) = TREE_DEPRECATED (decl2); - } - /* APPLE LOCAL end deprecated use in deprecated 6425499 */ - start_method_def (decl); - - /* APPLE LOCAL begin ObjC abi v2 */ - /* APPLE LOCAL radar 4581680 */ - if (flag_objc_abi == 2 && objc_inherit_code == CLASS_METHOD_DECL) - { - /* Insert declaration of class method "load" in one of the __nonlazy_class - or __nonlazy_category lists. */ - tree id = DECL_NAME (decl); - if (id && TREE_CODE (id) == IDENTIFIER_NODE) - { - const char *name = IDENTIFIER_POINTER (id); - if (!strcmp (name, "load")) - CLASS_OR_CATEGORY_HAS_LOAD_IMPL (objc_implementation_context) = decl; - } - } - /* APPLE LOCAL end ObjC abi v2 */ -} - -void -objc_add_instance_variable (tree decl) -{ - (void) add_instance_variable (objc_ivar_context, - objc_public_flag, - decl); -} - -/* Return 1 if IDENT is an ObjC/ObjC++ reserved keyword in the context of - an '@'. */ - -int -objc_is_reserved_word (tree ident) -{ - unsigned char code = C_RID_CODE (ident); - - return (OBJC_IS_AT_KEYWORD (code) -#ifdef OBJCPLUS - /* APPLE LOCAL radar 4564694 */ - || code == RID_AT_PACKAGE - || code == RID_CLASS || code == RID_PUBLIC - || code == RID_PROTECTED || code == RID_PRIVATE - || code == RID_TRY || code == RID_THROW || code == RID_CATCH -#endif - ); -} - -/* Return true if TYPE is 'id'. */ - -static bool -objc_is_object_id (tree type) -{ - return OBJC_TYPE_NAME (type) == objc_object_id; -} - -static bool -objc_is_class_id (tree type) -{ - return OBJC_TYPE_NAME (type) == objc_class_id; -} - -/* Construct a C struct with same name as CLASS, a base struct with tag - SUPER_NAME (if any), and FIELDS indicated. */ - -static tree -objc_build_struct (tree class, tree fields, tree super_name) -{ - tree name = CLASS_NAME (class); - tree s = start_struct (RECORD_TYPE, name); - tree super = (super_name ? xref_tag (RECORD_TYPE, super_name) : NULL_TREE); - /* APPLE LOCAL begin radar 5676962 */ - tree t; - int cv = 0; - /* APPLE LOCAL radar 6285794 */ - struct lang_type ** pTypeLang = 0; - /* APPLE LOCAL end radar 5676962 */ - - /* APPLE LOCAL begin radar 5025001 */ - if (flag_objc_abi == 2 && TREE_CODE (class) == CLASS_INTERFACE_TYPE - && fields != NULL_TREE) - { - /* append char :0; field if last field is a bit field. */ - tree last = fields; - while (TREE_CHAIN (last)) - last = TREE_CHAIN (last); - gcc_assert (TREE_CODE (last) == FIELD_DECL); - if (DECL_INITIAL (last) && DECL_INITIAL (last) != error_mark_node) - { - tree bf_zero = build_decl (FIELD_DECL, NULL_TREE, char_type_node); - DECL_INITIAL (bf_zero) = size_zero_node; - SET_DECL_C_BIT_FIELD (bf_zero); - DECL_NONADDRESSABLE_P (bf_zero) = 1; - TREE_CHAIN (last) = bf_zero; - } - } - /* APPLE LOCAL end radar 5025001 */ - - if (super) - { - /* Prepend a packed variant of the base class into the layout. This - is necessary to preserve ObjC ABI compatibility. */ - tree base = build_decl (FIELD_DECL, NULL_TREE, super); - tree field = TYPE_FIELDS (super); - - while (field && TREE_CHAIN (field) - && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) - field = TREE_CHAIN (field); - - /* For ObjC ABI purposes, the "packed" size of a base class is the - the sum of the offset and the size (in bits) of the last field - in the class. */ - DECL_SIZE (base) - = (field && TREE_CODE (field) == FIELD_DECL - ? size_binop (PLUS_EXPR, - size_binop (PLUS_EXPR, - size_binop - (MULT_EXPR, - convert (bitsizetype, - DECL_FIELD_OFFSET (field)), - bitsize_int (BITS_PER_UNIT)), - DECL_FIELD_BIT_OFFSET (field)), - DECL_SIZE (field)) - : bitsize_zero_node); - DECL_SIZE_UNIT (base) - = size_binop (FLOOR_DIV_EXPR, convert (sizetype, DECL_SIZE (base)), - size_int (BITS_PER_UNIT)); - DECL_ARTIFICIAL (base) = 1; - DECL_ALIGN (base) = 1; - DECL_FIELD_CONTEXT (base) = s; - /* APPLE LOCAL begin radar 4477797 */ - if (write_symbols == DWARF2_DEBUG) - DECL_IGNORED_P (base) = 1; - /* APPLE LOCAL end radar 4477797 */ -#ifdef OBJCPLUS - DECL_FIELD_IS_BASE (base) = 1; - - if (fields) - TREE_NO_WARNING (fields) = 1; /* Suppress C++ ABI warnings -- we */ -#endif /* are following the ObjC ABI here. */ - TREE_CHAIN (base) = fields; - fields = base; - } - - /* NB: Calling finish_struct() may cause type TYPE_LANG_SPECIFIC fields - in all variants of this RECORD_TYPE to be clobbered, but it is therein - that we store protocol conformance info (e.g., 'NSObject <MyProtocol>'). - Hence, we must squirrel away the ObjC-specific information before calling - finish_struct(), and then reinstate it afterwards. */ - - /* APPLE LOCAL begin radar 5676962 */ -#if 0 - removed: - for (t = TYPE_NEXT_VARIANT (s); t; t = TYPE_NEXT_VARIANT (t)) - objc_info - = chainon (objc_info, - build_tree_list (NULL_TREE, TYPE_OBJC_INFO (t))); -#endif - /* APPLE LOCAL end radar 5676962 */ - - /* Point the struct at its related Objective-C class. */ - INIT_TYPE_OBJC_INFO (s); - TYPE_OBJC_INTERFACE (s) = class; - - /* APPLE LOCAL begin radar 5676962, 4310884, 4945770 */ - /* Call to finish_struct has the side-effect of unifying TYPE_LANG_SPECIFIC - of all variants to be same as the main variant's. We must preseve objc-c's - TYPE_LANG_SPECIFIC objects as they have unique information in them; such as - TYPE_OBJC_INFO. So, we save and restore TYPE_LANG_SPECIFIC objects. */ - for (t = TYPE_MAIN_VARIANT (s); t && TYPE_LANG_SPECIFIC (t) && TYPE_OBJC_INFO (t); - t = TYPE_NEXT_VARIANT (t)) - ++cv; - if (cv > 1) { - int i=0; - pTypeLang = (struct lang_type **) xmalloc (sizeof (struct lang_type *) * cv); - for (t = TYPE_MAIN_VARIANT (s); t && TYPE_LANG_SPECIFIC (t) && TYPE_OBJC_INFO (t); - t = TYPE_NEXT_VARIANT (t)) - pTypeLang[i++] = TYPE_LANG_SPECIFIC(t); - - } - /* APPLE LOCAL end radar 5676962, 4310884, 4945770 */ - - s = finish_struct (s, fields, NULL_TREE); - - /* APPLE LOCAL begin radar 5676962, 4310884, 4945770 */ - if (cv > 1) { - int i=0; - for (t = TYPE_MAIN_VARIANT (s); t && TYPE_LANG_SPECIFIC (t) && TYPE_OBJC_INFO (t); - t = TYPE_NEXT_VARIANT (t)) - TYPE_LANG_SPECIFIC(t) = pTypeLang[i++]; - free (pTypeLang); - } - /* APPLE LOCAL end radar 5676962, 4310884, 4945770 */ - - /* Use TYPE_BINFO structures to point at the super class, if any. */ - objc_xref_basetypes (s, super); - - /* Mark this struct as a class template. */ - CLASS_STATIC_TEMPLATE (class) = s; - - return s; -} - -/* Build a type differing from TYPE only in that TYPE_VOLATILE is set. - Unlike tree.c:build_qualified_type(), preserve TYPE_LANG_SPECIFIC in the - process. */ -static tree -objc_build_volatilized_type (tree type) -{ - tree t; - - /* Check if we have not constructed the desired variant already. */ - for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) - { - /* The type qualifiers must (obviously) match up. */ - if (!TYPE_VOLATILE (t) - || (TYPE_READONLY (t) != TYPE_READONLY (type)) - || (TYPE_RESTRICT (t) != TYPE_RESTRICT (type))) - continue; - - /* For pointer types, the pointees (and hence their TYPE_LANG_SPECIFIC - info, if any) must match up. */ - if (POINTER_TYPE_P (t) - && (TREE_TYPE (t) != TREE_TYPE (type))) - continue; - - /* APPLE LOCAL begin radar 4204796 */ - /* Only match up the types which were previously volatilized in similar fashion and not - because they were declared as such. */ - if (!lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (t))) - continue; - /* APPLE LOCAL end radar 4204796 */ - - /* Everything matches up! */ - return t; - } - - /* Ok, we could not re-use any of the pre-existing variants. Create - a new one. */ - t = build_variant_type_copy (type); - TYPE_VOLATILE (t) = 1; - /* APPLE LOCAL begin radar 4204796 */ - TYPE_ATTRIBUTES (t) = merge_attributes (TYPE_ATTRIBUTES (type), - tree_cons (get_identifier ("objc_volatilized"), - NULL_TREE, - NULL_TREE)); - if (TREE_CODE (t) == ARRAY_TYPE) - TREE_TYPE (t) = objc_build_volatilized_type (TREE_TYPE (t)); - /* APPLE LOCAL end radar 4204796 */ - - return t; -} - -/* Mark DECL as being 'volatile' for purposes of Darwin - _setjmp()/_longjmp() exception handling. Called from - objc_mark_locals_volatile(). */ -void -objc_volatilize_decl (tree decl) -{ - /* Do not mess with variables that are 'static' or (already) - 'volatile'. */ - if (!TREE_THIS_VOLATILE (decl) && !TREE_STATIC (decl) - && (TREE_CODE (decl) == VAR_DECL - || TREE_CODE (decl) == PARM_DECL)) - { - tree t = TREE_TYPE (decl); - /* APPLE LOCAL begin radar 4204796 */ - /* code removed */ - /* APPLE LOCAL end radar 4204796 */ - - t = objc_build_volatilized_type (t); - /* APPLE LOCAL begin radar 4204796 */ - /* code removed */ - /* APPLE LOCAL end radar 4204796 */ - - TREE_TYPE (decl) = t; - TREE_THIS_VOLATILE (decl) = 1; - TREE_SIDE_EFFECTS (decl) = 1; - DECL_REGISTER (decl) = 0; -#ifndef OBJCPLUS - C_DECL_REGISTER (decl) = 0; -#endif - } -} - -/* APPLE LOCAL begin radar 4697411 */ -/* This routine sets the "objc_volatilized" attribute on COMPONENT_REF - node if 1) it is not already 'volatile' and 2) datum node - has its "objc_volatilized" attribute set. -*/ -void -objc_volatilize_component_ref (tree cref, tree member_type) -{ - tree object, type; - - if (TYPE_VOLATILE (member_type)) - return; - object = TREE_OPERAND (cref, 0); - if (TREE_THIS_VOLATILE (object)) - { - type = TREE_TYPE (object); - if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (type))) - { - member_type = objc_build_volatilized_type (member_type); - TREE_TYPE (cref) = member_type; - TREE_THIS_VOLATILE (cref) = 1; - TREE_SIDE_EFFECTS (cref) = 1; - } - } - return; -} -/* APPLE LOCAL end radar 4697411 */ - -/* Check if protocol PROTO is adopted (directly or indirectly) by class CLS - (including its categoreis and superclasses) or by object type TYP. - Issue a warning if PROTO is not adopted anywhere and WARN is set. */ - -static bool -objc_lookup_protocol (tree proto, tree cls, tree typ, bool warn) -{ - bool class_type = (cls != NULL_TREE); - - while (cls) - { - tree c; - - /* Check protocols adopted by the class and its categories. */ - for (c = cls; c; c = CLASS_CATEGORY_LIST (c)) - { - if (lookup_protocol_in_reflist (CLASS_PROTOCOL_LIST (c), proto)) - return true; - } - - /* Repeat for superclasses. */ - cls = lookup_interface (CLASS_SUPER_NAME (cls)); - } - - /* Check for any protocols attached directly to the object type. */ - if (TYPE_HAS_OBJC_INFO (typ)) - { - if (lookup_protocol_in_reflist (TYPE_OBJC_PROTOCOL_LIST (typ), proto)) - return true; - } - - if (warn) - { - strcpy (errbuf, class_type ? "class \'" : "type \'"); - gen_type_name_0 (class_type ? typ : TYPE_POINTER_TO (typ)); - strcat (errbuf, "\' does not "); - /* NB: Types 'id' and 'Class' cannot reasonably be described as - "implementing" a given protocol, since they do not have an - implementation. */ - strcat (errbuf, class_type ? "implement" : "conform to"); - strcat (errbuf, " the \'"); - strcat (errbuf, IDENTIFIER_POINTER (PROTOCOL_NAME (proto))); - strcat (errbuf, "\' protocol"); - /* APPLE LOCAL default to Wformat-security 5764921 */ - warning (0, "%s", errbuf); - } - - return false; -} - -/* Check if class RCLS and instance struct type RTYP conform to at least the - same protocols that LCLS and LTYP conform to. */ - -static bool -objc_compare_protocols (tree lcls, tree ltyp, tree rcls, tree rtyp, bool warn) -{ - tree p; - bool have_lproto = false; - - while (lcls) - { - /* NB: We do _not_ look at categories defined for LCLS; these may or - may not get loaded in, and therefore it is unreasonable to require - that RCLS/RTYP must implement any of their protocols. */ - for (p = CLASS_PROTOCOL_LIST (lcls); p; p = TREE_CHAIN (p)) - { - have_lproto = true; - - if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn)) - return warn; - } - - /* Repeat for superclasses. */ - lcls = lookup_interface (CLASS_SUPER_NAME (lcls)); - } - - /* Check for any protocols attached directly to the object type. */ - if (TYPE_HAS_OBJC_INFO (ltyp)) - { - for (p = TYPE_OBJC_PROTOCOL_LIST (ltyp); p; p = TREE_CHAIN (p)) - { - have_lproto = true; - - if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn)) - return warn; - } - } - - /* NB: If LTYP and LCLS have no protocols to search for, return 'true' - vacuously, _unless_ RTYP is a protocol-qualified 'id'. We can get - away with simply checking for 'id' or 'Class' (!RCLS), since this - routine will not get called in other cases. */ - return have_lproto || (rcls != NULL_TREE); -} - -/* APPLE LOCAL begin 4154928 */ -/* Given two types TYPE1 and TYPE2, return their least common ancestor. - Both TYPE1 and TYPE2 must be pointers, and already determined to be - compatible by objc_compare_types() below. */ - -tree -objc_common_type (tree type1, tree type2) -{ - tree inner1 = TREE_TYPE (type1), inner2 = TREE_TYPE (type2); - - while (POINTER_TYPE_P (inner1)) - { - inner1 = TREE_TYPE (inner1); - inner2 = TREE_TYPE (inner2); - } - - /* If one type is derived from another, return the base type. */ - if (DERIVED_FROM_P (inner1, inner2)) - return type1; - else if (DERIVED_FROM_P (inner2, inner1)) - return type2; - - /* If both types are 'Class', return 'Class'. */ - if (objc_is_class_id (inner1) && objc_is_class_id (inner2)) - return objc_class_type; - - /* Otherwise, return 'id'. */ - return objc_object_type; -} -/* APPLE LOCAL end 4154928 */ - -/* APPLE LOCAL begin radar 5595325 */ -/* This routine checks that TYPE has __attribute__((NSObject)) */ -static bool -objc_nsobject_attribute_type (tree type) -{ - return POINTER_TYPE_P (type) && - lookup_attribute ("NSObject", TYPE_ATTRIBUTES (type)); -} -/* APPLE LOCAL end radar 5595325 */ - -/* Determine if it is permissible to assign (if ARGNO is greater than -3) - an instance of RTYP to an instance of LTYP or to compare the two - (if ARGNO is equal to -3), per ObjC type system rules. Before - returning 'true', this routine may issue warnings related to, e.g., - protocol conformance. When returning 'false', the routine must - produce absolutely no warnings; the C or C++ front-end will do so - instead, if needed. If either LTYP or RTYP is not an Objective-C type, - the routine must return 'false'. - - The ARGNO parameter is encoded as follows: - >= 1 Parameter number (CALLEE contains function being called); - 0 Return value; - -1 Assignment; - -2 Initialization; - APPLE LOCAL begin 4175534 - -3 Comparison (LTYP and RTYP may match in either direction); - -4 Silent comparison (for C++ overload resolution). - -5 Comparison of ivar and @synthesized property type - // APPLE LOCAL begin radar 5218071 - -6 Comparison of two property types; RTYP is type of property - in 'base' and LTYP is property type in derived class. They - match if LTYP is more specialized than RTYP; this includes - when RTYP is 'id' or LTYP is an object derived from an object - of RTYP. - // APPLE LOCAL end radar 5218071 - APPLE LOCAL end 4175534 */ - -bool -/* APPLE LOCAL radar 6231433 */ -objc_compare_types (tree ltyp, tree rtyp, int argno, tree callee, const char *message) -{ - tree lcls, rcls, lproto, rproto; - bool pointers_compatible; - - /* APPLE LOCAL begin radar 5595325 */ - tree orig_ltyp, orig_rtyp; - /* APPLE LOCAL end radar 5595325 */ - - /* We must be dealing with pointer types */ - if (!POINTER_TYPE_P (ltyp) || !POINTER_TYPE_P (rtyp)) - return false; - - /* APPLE LOCAL begin radar 5595325 */ - orig_ltyp = ltyp; - orig_rtyp = rtyp; - /* APPLE LOCAL end radar 5595325 */ - do - { - ltyp = TREE_TYPE (ltyp); /* Remove indirections. */ - rtyp = TREE_TYPE (rtyp); - } - while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp)); - - /* APPLE LOCAL begin 4174166 */ - /* We must also handle function pointers, since ObjC is a bit more - lenient than C or C++ on this. */ - if (TREE_CODE (ltyp) == FUNCTION_TYPE && TREE_CODE (rtyp) == FUNCTION_TYPE) - { - /* Return types must be covariant. */ - if (!comptypes (TREE_TYPE (ltyp), TREE_TYPE (rtyp)) - && !objc_compare_types (TREE_TYPE (ltyp), TREE_TYPE (rtyp), - /* APPLE LOCAL radar 6231433 */ - argno, callee, message)) - return false; - - /* Argument types must be contravariant. */ - for (ltyp = TYPE_ARG_TYPES (ltyp), rtyp = TYPE_ARG_TYPES (rtyp); - ltyp && rtyp; ltyp = TREE_CHAIN (ltyp), rtyp = TREE_CHAIN (rtyp)) - { - if (!comptypes (TREE_VALUE (rtyp), TREE_VALUE (ltyp)) - && !objc_compare_types (TREE_VALUE (rtyp), TREE_VALUE (ltyp), - /* APPLE LOCAL radar 6231433 */ - argno, callee, message)) - return false; - } - - return (ltyp == rtyp); - } - - /* APPLE LOCAL end 4174166 */ - /* Past this point, we are only interested in ObjC class instances, - or 'id' or 'Class'. */ - if (TREE_CODE (ltyp) != RECORD_TYPE || TREE_CODE (rtyp) != RECORD_TYPE) - return false; - - if (!objc_is_object_id (ltyp) && !objc_is_class_id (ltyp) - /* APPLE LOCAL begin radar 5595325 */ - && !TYPE_HAS_OBJC_INFO (ltyp)) { - /* Allow NSObject pointers to match 'id' */ - return (objc_nsobject_attribute_type (orig_ltyp) && objc_is_object_id (rtyp)) - ? true : false; - } - /* APPLE LOCAL end radar 5595325 */ - - if (!objc_is_object_id (rtyp) && !objc_is_class_id (rtyp) - /* APPLE LOCAL begin radar 5595325 */ - && !TYPE_HAS_OBJC_INFO (rtyp)) { - /* Allow NSObject pointers to match 'id' */ - return (objc_nsobject_attribute_type (orig_rtyp) && objc_is_object_id (ltyp)) - ? true : false; - } - /* APPLE LOCAL end radar 5595325 */ - - /* APPLE LOCAL begin 4175534 */ - /* Past this point, we are committed to returning 'true' to the caller - (unless performing a silent comparison; see below). However, we can - still warn about type and/or protocol mismatches. */ - /* APPLE LOCAL end 4175534 */ - - if (TYPE_HAS_OBJC_INFO (ltyp)) - { - lcls = TYPE_OBJC_INTERFACE (ltyp); - lproto = TYPE_OBJC_PROTOCOL_LIST (ltyp); - } - else - lcls = lproto = NULL_TREE; - - if (TYPE_HAS_OBJC_INFO (rtyp)) - { - rcls = TYPE_OBJC_INTERFACE (rtyp); - rproto = TYPE_OBJC_PROTOCOL_LIST (rtyp); - } - else - rcls = rproto = NULL_TREE; - - /* If we could not find an @interface declaration, we must have - only seen a @class declaration; for purposes of type comparison, - treat it as a stand-alone (root) class. */ - - /* APPLE LOCAL begin radar 6061276 */ - if (lcls && TREE_CODE (lcls) == IDENTIFIER_NODE) - /* A previously declared @class may have its @interface declared at - this point. Find it. */ - lcls = lookup_interface (lcls); - - if (rcls && TREE_CODE (rcls) == IDENTIFIER_NODE) - /* A previously declared @class may have its @interface declared at - this point. Find it. */ - rcls = lookup_interface (rcls); - /* APPLE LOCAL end radar 6061276 */ - - /* If either type is an unqualified 'id', we're done. */ - /* APPLE LOCAL radar 5218071 */ - if ((argno != -6 && !lproto && objc_is_object_id (ltyp)) - || (!rproto && objc_is_object_id (rtyp))) - return true; - - pointers_compatible = (TYPE_MAIN_VARIANT (ltyp) == TYPE_MAIN_VARIANT (rtyp)); - - /* If the underlying types are the same, and at most one of them has - a protocol list, we do not need to issue any diagnostics. */ - if (pointers_compatible && (!lproto || !rproto)) - return true; - - /* If exactly one of the types is 'Class', issue a diagnostic; any - exceptions of this rule have already been handled. */ - if (objc_is_class_id (ltyp) ^ objc_is_class_id (rtyp)) - pointers_compatible = false; - /* Otherwise, check for inheritance relations. */ - else - { - if (!pointers_compatible) - pointers_compatible - /* APPLE LOCAL radar 5218071 */ - = ((argno != -6 && objc_is_object_id (ltyp)) || objc_is_object_id (rtyp)); - /* APPLE LOCAL radar 5218071 */ - if (!pointers_compatible && argno != -6) - pointers_compatible = DERIVED_FROM_P (ltyp, rtyp); - - /* APPLE LOCAL 4175534 */ - if (!pointers_compatible && argno <= -3 && argno != -5) - pointers_compatible = DERIVED_FROM_P (rtyp, ltyp); - } - - /* If the pointers match modulo protocols, check for protocol conformance - mismatches. */ - if (pointers_compatible) - { - pointers_compatible = objc_compare_protocols (lcls, ltyp, rcls, rtyp, - /* APPLE LOCAL 4175534 */ - (argno > -3 || argno == -5)); - - if (!pointers_compatible && argno == -3) - pointers_compatible = objc_compare_protocols (rcls, rtyp, lcls, ltyp, - /* APPLE LOCAL 4175534 */ - false); - } - - if (!pointers_compatible) - { - /* APPLE LOCAL begin 4175534 */ - /* The two pointers are not exactly compatible. Issue a warning, unless - we are performing a silent comparison, in which case return 'false' - instead. */ - /* APPLE LOCAL end 4175534 */ - switch (argno) - { - /* APPLE LOCAL begin 4175534 */ - /* APPLE LOCAL radar 5218071 */ - case -6: - case -5: - case -4: - return false; - - /* APPLE LOCAL end 4175534 */ - /* APPLE LOCAL begin radar 5839123 */ - case -3: - /* APPLE LOCAL begin radar 6231433 */ - warning (0, "%s of distinct Objective-C types %qT and %qT lacks a cast", - message, orig_rtyp, orig_ltyp); - /* APPLE LOCAL end radar 6231433 */ - break; - - case -2: - warning (0, "incompatible Objective-C types initializing %qT, expected %qT", - orig_rtyp, orig_ltyp); - break; - - case -1: - warning (0, "incompatible Objective-C types assigning %qT, expected %qT", - orig_rtyp, orig_ltyp); - break; - - case 0: - warning (0, "incompatible Objective-C types returning %qT, expected %qT", - orig_rtyp, orig_ltyp); - break; - - default: - warning (0, "incompatible Objective-C types %qT, expected %qT when" - " passing argument %d of %qE from distinct " - "Objective-C type" - , orig_rtyp, orig_ltyp, argno, callee); - /* APPLE LOCAL end radar 5839123 */ - break; - } - } - - return true; -} - -/* APPLE LOCAL begin radar 4229905 - radar 6131433 */ -/* This routine is similar to objc_compare_types except that function-pointers are - excluded. This is because, caller assumes that common types are of (id, Object*) - variety and calls objc_common_type to obtain a common type. There is no commonolty - between two function-pointers in this regard. */ - -bool -objc_have_common_type (tree ltyp, tree rtyp, int argno, tree callee, const char *message) -{ - if (objc_compare_types (ltyp, rtyp, argno, callee, message)) - { - /* exclude function-pointer types. */ - do - { - ltyp = TREE_TYPE (ltyp); /* Remove indirections. */ - rtyp = TREE_TYPE (rtyp); - } - while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp)); - return !(TREE_CODE (ltyp) == FUNCTION_TYPE && TREE_CODE (rtyp) == FUNCTION_TYPE); - } - return false; -} -/* APPLE LOCAL end radar 4229905 - radar 6131433 */ - -/* Check if LTYP and RTYP have the same type qualifiers. If either type - lives in the volatilized hash table, ignore the 'volatile' bit when - making the comparison. */ - -bool -objc_type_quals_match (tree ltyp, tree rtyp) -{ - int lquals = TYPE_QUALS (ltyp), rquals = TYPE_QUALS (rtyp); - - /* APPLE LOCAL begin radar 4204796 */ - if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (ltyp))) - lquals &= ~TYPE_QUAL_VOLATILE; - - if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (rtyp))) - rquals &= ~TYPE_QUAL_VOLATILE; - /* APPLE LOCAL end radar 4204796 */ - - return (lquals == rquals); -} - -#ifndef OBJCPLUS -/* Determine if CHILD is derived from PARENT. The routine assumes that - both parameters are RECORD_TYPEs, and is non-reflexive. */ - -static bool -objc_derived_from_p (tree parent, tree child) -{ - parent = TYPE_MAIN_VARIANT (parent); - - for (child = TYPE_MAIN_VARIANT (child); - TYPE_BINFO (child) && BINFO_N_BASE_BINFOS (TYPE_BINFO (child));) - { - child = TYPE_MAIN_VARIANT (BINFO_TYPE (BINFO_BASE_BINFO - (TYPE_BINFO (child), - 0))); - - if (child == parent) - return true; - } - - return false; -} -#endif - -/* APPLE LOCAL C* language */ -tree -objc_build_component_ref (tree datum, tree component) -{ - /* If COMPONENT is NULL, the caller is referring to the anonymous - base class field. */ - if (!component) - { - tree base = TYPE_FIELDS (TREE_TYPE (datum)); - - return build3 (COMPONENT_REF, TREE_TYPE (base), datum, base, NULL_TREE); - } - - /* The 'build_component_ref' routine has been removed from the C++ - front-end, but 'finish_class_member_access_expr' seems to be - a worthy substitute. */ -#ifdef OBJCPLUS - return finish_class_member_access_expr (datum, component, false); -#else - return build_component_ref (datum, component); -#endif -} - -/* Recursively copy inheritance information rooted at BINFO. To do this, - we emulate the song and dance performed by cp/tree.c:copy_binfo(). */ - -static tree -objc_copy_binfo (tree binfo) -{ - tree btype = BINFO_TYPE (binfo); - tree binfo2 = make_tree_binfo (BINFO_N_BASE_BINFOS (binfo)); - tree base_binfo; - int ix; - - BINFO_TYPE (binfo2) = btype; - BINFO_OFFSET (binfo2) = BINFO_OFFSET (binfo); - BINFO_BASE_ACCESSES (binfo2) = BINFO_BASE_ACCESSES (binfo); - - /* Recursively copy base binfos of BINFO. */ - for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++) - { - tree base_binfo2 = objc_copy_binfo (base_binfo); - - BINFO_INHERITANCE_CHAIN (base_binfo2) = binfo2; - BINFO_BASE_APPEND (binfo2, base_binfo2); - } - - return binfo2; -} - -/* Record superclass information provided in BASETYPE for ObjC class REF. - This is loosely based on cp/decl.c:xref_basetypes(). */ - -static void -objc_xref_basetypes (tree ref, tree basetype) -{ - tree binfo = make_tree_binfo (basetype ? 1 : 0); - - TYPE_BINFO (ref) = binfo; - BINFO_OFFSET (binfo) = size_zero_node; - BINFO_TYPE (binfo) = ref; - - if (basetype) - { - tree base_binfo = objc_copy_binfo (TYPE_BINFO (basetype)); - - BINFO_INHERITANCE_CHAIN (base_binfo) = binfo; - BINFO_BASE_ACCESSES (binfo) = VEC_alloc (tree, gc, 1); - BINFO_BASE_APPEND (binfo, base_binfo); - BINFO_BASE_ACCESS_APPEND (binfo, access_public_node); - } -} - -/* APPLE LOCAL begin radar 4204796 */ -/* volatilized_hash and volatilized_eq removed */ -/* APPLE LOCAL end radar 4204796 */ -/* Called from finish_decl. */ - -void -objc_check_decl (tree decl) -{ - tree type = TREE_TYPE (decl); - - /* APPLE LOCAL begin 6393374 */ - while (TREE_CODE (type) == ARRAY_TYPE) - type = TREE_TYPE (type); - /* APPLE LOCAL end 6393374 */ - if (TREE_CODE (type) != RECORD_TYPE) - return; - if (OBJC_TYPE_NAME (type) && (type = objc_is_class_name (OBJC_TYPE_NAME (type)))) - error ("statically allocated instance of Objective-C class %qs", - IDENTIFIER_POINTER (type)); -} - -/* APPLE LOCAL begin radar 4281748 */ -void -objc_check_global_decl (tree decl) -{ - tree id = DECL_NAME (decl); - if (objc_is_class_name (id) && global_bindings_p()) - error ("redeclaration of Objective-C class %qs", IDENTIFIER_POINTER (id)); -} -/* APPLE LOCAL end radar 4281748 */ - -/* APPLE LOCAL begin radar 4330422 */ -/* Return a non-volatalized version of TYPE. */ - -tree -objc_non_volatilized_type (tree type) -{ - if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (type))) - type = build_qualified_type (type, (TYPE_QUALS (type) & ~TYPE_QUAL_VOLATILE)); - return type; -} -/* APPLE LOCAL end radar 4330422 */ - -/* Construct a PROTOCOLS-qualified variant of INTERFACE, where INTERFACE may - either name an Objective-C class, or refer to the special 'id' or 'Class' - types. If INTERFACE is not a valid ObjC type, just return it unchanged. */ - -tree -objc_get_protocol_qualified_type (tree interface, tree protocols) -{ - /* If INTERFACE is not provided, default to 'id'. */ - tree type = (interface ? objc_is_id (interface) : objc_object_type); - bool is_ptr = (type != NULL_TREE); - - if (!is_ptr) - { - type = objc_is_class_name (interface); - - if (type) - /* APPLE LOCAL begin 4216500 */ - { - /* If looking at a typedef, retrieve the precise type it - describes. */ - if (TREE_CODE (interface) == IDENTIFIER_NODE) - interface = identifier_global_value (interface); - - type = ((interface && TREE_CODE (interface) == TYPE_DECL - && DECL_ORIGINAL_TYPE (interface)) - ? DECL_ORIGINAL_TYPE (interface) - : xref_tag (RECORD_TYPE, type)); - } - /* APPLE LOCAL end 4216500 */ - /* APPLE LOCAL begin radar 6267049 */ - else { - /* This can only happen because of bogus code. Note that in this - path, protocols is not even considered. */ - error ("qualified type is not a valid object"); - /* Check further to see if protocol is valid. */ - if (protocols) - (void) lookup_and_install_protocols (protocols, false); - return interface; - } - /* APPLE LOCAL end radar 6267049 */ - } - - if (protocols) - { - type = build_variant_type_copy (type); - - /* For pointers (i.e., 'id' or 'Class'), attach the protocol(s) - to the pointee. */ - if (is_ptr) - { - TREE_TYPE (type) = build_variant_type_copy (TREE_TYPE (type)); - TYPE_POINTER_TO (TREE_TYPE (type)) = type; - type = TREE_TYPE (type); - } - - /* Look up protocols and install in lang specific list. */ - DUP_TYPE_OBJC_INFO (type, TYPE_MAIN_VARIANT (type)); - /* APPLE LOCAL radar 4398221 */ - TYPE_OBJC_PROTOCOL_LIST (type) = lookup_and_install_protocols (protocols, false); - - /* For RECORD_TYPEs, point to the @interface; for 'id' and 'Class', - return the pointer to the new pointee variant. */ - if (is_ptr) - type = TYPE_POINTER_TO (type); - else - TYPE_OBJC_INTERFACE (type) - = TYPE_OBJC_INTERFACE (TYPE_MAIN_VARIANT (type)); - } - - return type; -} - -/* Check for circular dependencies in protocols. The arguments are - PROTO, the protocol to check, and LIST, a list of protocol it - conforms to. */ - -static void -check_protocol_recursively (tree proto, tree list) -{ - tree p; - - for (p = list; p; p = TREE_CHAIN (p)) - { - tree pp = TREE_VALUE (p); - - if (TREE_CODE (pp) == IDENTIFIER_NODE) - pp = lookup_protocol (pp); - - if (pp == proto) - fatal_error ("protocol %qs has circular dependency", - IDENTIFIER_POINTER (PROTOCOL_NAME (pp))); - if (pp) - check_protocol_recursively (proto, PROTOCOL_LIST (pp)); - } -} - -/* APPLE LOCAL begin radar 4947311 - protocol attributes */ -static void -objc_handle_protocol_attrs (tree proto) -{ - tree chain; - - for (chain = PROTOCOL_ATTRIBUTES (proto); chain; chain = TREE_CHAIN (chain)) - { - if (is_attribute_p ("deprecated", TREE_PURPOSE (chain))) - warning (0, "protocol %qs is deprecated", - IDENTIFIER_POINTER (CLASS_NAME (proto))); - if (is_attribute_p ("unavailable", TREE_PURPOSE (chain))) - warning (0, "protocol %qs is unavailable", - IDENTIFIER_POINTER (CLASS_NAME (proto))); - } - return; -} - -/* APPLE LOCAL end radar 4947311 - protocol attributes */ - -/* Look up PROTOCOLS, and return a list of those that are found. - If none are found, return NULL. */ - -static tree -/* APPLE LOCAL radar 4398221 */ -lookup_and_install_protocols (tree protocols, bool defNeeded) -{ - tree proto; - tree return_value = NULL_TREE; - - for (proto = protocols; proto; proto = TREE_CHAIN (proto)) - { - tree ident = TREE_VALUE (proto); - tree p = lookup_protocol (ident); - - if (p) - /* APPLE LOCAL begin radar 4398221 */ - { - if (defNeeded && !PROTOCOL_DEFINED (p)) - warning (0, "no definition of protocol %qs is found", - IDENTIFIER_POINTER (ident)); - /* APPLE LOCAL radar 4947311 - protocol attributes */ - objc_handle_protocol_attrs (p); - return_value = chainon (return_value, - build_tree_list (NULL_TREE, p)); - } - /* APPLE LOCAL end radar 4398221 */ - else if (ident != error_mark_node) - error ("cannot find protocol declaration for %qs", - IDENTIFIER_POINTER (ident)); - } - - return return_value; -} - -/* Create a declaration for field NAME of a given TYPE. */ - -static tree -create_field_decl (tree type, const char *name) -{ - return build_decl (FIELD_DECL, get_identifier (name), type); -} - -/* Create a global, static declaration for variable NAME of a given TYPE. The - finish_var_decl() routine will need to be called on it afterwards. */ - -/* APPLE LOCAL begin radar 4431864 */ -static tree -start_var_decl (tree type, const char *name) -{ - tree var = build_decl (VAR_DECL, get_identifier (name), type); - objc_set_global_decl_fields (var); - return var; -} - -/* Utility routine to set global flags for a global, static declaration. */ - -static void -objc_set_global_decl_fields (tree var) -{ - TREE_STATIC (var) = 1; - DECL_INITIAL (var) = error_mark_node; /* A real initializer is coming... */ - DECL_IGNORED_P (var) = 1; - DECL_ARTIFICIAL (var) = 1; - DECL_CONTEXT (var) = NULL_TREE; -#ifdef OBJCPLUS - DECL_THIS_STATIC (var) = 1; /* squash redeclaration errors */ -#endif - /* APPLE LOCAL begin 6255801 */ - /* Keep word alignment for metadata records. */ - DECL_USER_ALIGN (var) = 1; - /* APPLE LOCAL end 6255801 */ -} -/* APPLE LOCAL end radar 4431864 */ - -/* APPLE LOCAL begin ObjC new abi */ -/* Create a globally visible definition for variable NAME of a given TYPE. The - finish_var_decl() routine will need to be called on it afterwards. */ - -static tree -create_global_decl (tree type, const char *name) -{ - /* APPLE LOCAL begin radar 4431864 */ - tree id = get_identifier (name); - /* APPLE LOCAL radar 4441049 */ - tree var = hash_name_lookup (ivar_offset_hash_list, id); - if (var) - { - DECL_EXTERNAL (var) = 0; - /* APPLE LOCAL radar 4431864 */ - objc_set_global_decl_fields (var); - } - else - /* APPLE LOCAL begin radar 4441049 */ - { - var = start_var_decl (type, name); - hash_name_enter (ivar_offset_hash_list, var); - } - /* APPLE LOCAL end radar 4441049 */ - /* APPLE LOCAL end radar 4431864 */ - TREE_PUBLIC (var) = 1; - return var; -} - -/* Create a symbol with __attribute__ ((visibility ("hidden"))) - attribute (private extern) */ - -static tree -create_hidden_decl (tree type, const char *name) -{ - tree decl = create_global_decl (type, name); - DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; - DECL_VISIBILITY_SPECIFIED (decl) = 1; - return decl; -} - -/* Create an extern declaration for variable NAME of a given TYPE. The - finish_var_decl() routine will need to be called on it afterwards. */ - -static tree -create_extern_decl (tree type, const char *name) -{ - tree id = get_identifier (name); - /* APPLE LOCAL radar 4441049 */ - tree var = hash_name_lookup (ivar_offset_hash_list, id); - if (var) - return var; - /* Name not already declared. */ - var = build_decl (VAR_DECL, id, type); - DECL_EXTERNAL (var) = 1; - TREE_PUBLIC (var) = 1; - /* All external declarations are at file_scope to prevent - duplication of declarations; a common occurance for external - variables holding ivar offsets in the new abi. */ - pushdecl_top_level (var); - rest_of_decl_compilation (var, 0, 0); - /* APPLE LOCAL radar 4441049 */ - hash_name_enter (ivar_offset_hash_list, var); - return var; -} - -/* APPLE LOCAL begin radar 4947014 - objc atomic property */ -/* This routine declares prototypes: - id objc_getProperty (id, SEL, ptrdiff_t, bool) - void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) - void objc_copyStruct (void *, const void *, size_t, bool, bool) -*/ -static void -declare_atomic_property_api (void) -{ - tree func_type; - - umsg_GetAtomicProperty = lookup_name (get_identifier ("objc_getProperty")); - umsg_SetAtomicProperty = lookup_name (get_identifier ("objc_setProperty")); - umsg_CopyAtomicStruct = lookup_name (get_identifier ("objc_copyStruct")); - if (umsg_GetAtomicProperty && umsg_SetAtomicProperty && umsg_CopyAtomicStruct) - return; - - if (!umsg_GetAtomicProperty) - { - /* id objc_getProperty (id, SEL, ptrdiff_t, bool) */ - func_type - = build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_selector_type, - tree_cons (NULL_TREE, long_integer_type_node, - tree_cons (NULL_TREE, boolean_type_node, NULL_TREE))))); - umsg_GetAtomicProperty = builtin_function ( - "objc_getProperty", - func_type, 0, NOT_BUILT_IN, 0, NULL_TREE); - TREE_NOTHROW (umsg_GetAtomicProperty) = 0; - } - - if (!umsg_SetAtomicProperty) - { - /* void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) */ - func_type - = build_function_type (void_type_node, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_selector_type, - tree_cons (NULL_TREE, long_integer_type_node, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, boolean_type_node, - tree_cons (NULL_TREE, boolean_type_node, NULL_TREE))))))); - umsg_SetAtomicProperty = builtin_function ( - "objc_setProperty", - func_type, 0, NOT_BUILT_IN, 0, NULL_TREE); - TREE_NOTHROW (umsg_SetAtomicProperty) = 0; - } - - if (!umsg_CopyAtomicStruct) - { - /* void objc_copyStruct (void *, const void *, size_t, bool, bool) */ - func_type - = build_function_type (void_type_node, - tree_cons (NULL_TREE, ptr_type_node, - tree_cons (NULL_TREE, ptr_type_node, - tree_cons (NULL_TREE, long_unsigned_type_node, - tree_cons (NULL_TREE, boolean_type_node, - tree_cons (NULL_TREE, boolean_type_node, NULL_TREE)))))); - umsg_CopyAtomicStruct = builtin_function ( - "objc_copyStruct", - func_type, 0, NOT_BUILT_IN, 0, NULL_TREE); - TREE_NOTHROW (umsg_CopyAtomicStruct) = 0; - } - return; -} - -/* This routine returns true if struct/union contains an object pointer or a __strong pointer. */ -static bool -aggregate_contains_objc_pointer (tree type) -{ - tree field; - field = TYPE_FIELDS (type); - - for (; field; field = TREE_CHAIN (field)) - { -#ifdef OBJCPLUS - if (TREE_CODE (field) != FIELD_DECL || TREE_STATIC (field)) - continue; -#endif - type = TREE_TYPE (field); - if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE) - if (aggregate_contains_objc_pointer (type)) - return true; - if (objc_is_gcable_type (type) == 1) - return true; - } - return false; -} - -/* APPLE LOCAL end radar 4947014 - objc atomic property */ - -/* APPLE LOCAL end ObjC new abi */ - -/* Finish off the variable declaration created by start_var_decl(). */ - -static void -finish_var_decl (tree var, tree initializer) -{ - finish_decl (var, initializer, NULL_TREE); - /* Ensure that the variable actually gets output. */ - mark_decl_referenced (var); - /* Mark the decl to avoid "defined but not used" warning. */ - TREE_USED (var) = 1; -} - -/* Find the decl for the constant string class reference. This is only - used for the NeXT runtime. */ - -static tree -setup_string_decl (void) -{ - char *name; - size_t length; - /* APPLE LOCAL begin radar 4719165 */ - const char *prefix = (flag_objc_abi == 2) - ? STRING_V2_OBJECT_GLOBAL_FORMAT - : STRING_OBJECT_GLOBAL_FORMAT; - - /* %s in format will provide room for terminating null */ - length = strlen (prefix) - + strlen (constant_string_class_name); - name = xmalloc (length); - sprintf (name, prefix, - constant_string_class_name); - constant_string_global_id = get_identifier (name); - string_class_decl = lookup_name (constant_string_global_id); - /* In OBJC2 abi constant string class reference refers to - class name for NSConstantString class. This declaration may not be - available yet (in fact it is not in most cases). So, declare an extern - OBJC_CLASS_$_NSConstantString in its place. */ - if (flag_objc_abi == 2 && !string_class_decl) - string_class_decl = create_extern_decl (objc_v2_class_template, name); - /* APPLE LOCAL end radar 4719165 */ - return string_class_decl; -} - -/* Purpose: "play" parser, creating/installing representations - of the declarations that are required by Objective-C. - - Model: - - type_spec--------->sc_spec - (tree_list) (tree_list) - | | - | | - identifier_node identifier_node */ - -static void -synth_module_prologue (void) -{ - tree type; - enum debug_info_type save_write_symbols = write_symbols; - const struct gcc_debug_hooks *const save_hooks = debug_hooks; - /* APPLE LOCAL 6348516 */ - int save_warn_padded; - - /* Suppress outputting debug symbols, because - dbxout_init hasn'r been called yet. */ - write_symbols = NO_DEBUG; - debug_hooks = &do_nothing_debug_hooks; - -#ifdef OBJCPLUS - push_lang_context (lang_name_c); /* extern "C" */ -#endif - - /* The following are also defined in <objc/objc.h> and friends. */ - - objc_object_id = get_identifier (TAG_OBJECT); - objc_class_id = get_identifier (TAG_CLASS); - - objc_object_reference = xref_tag (RECORD_TYPE, objc_object_id); - objc_class_reference = xref_tag (RECORD_TYPE, objc_class_id); - - objc_object_type = build_pointer_type (objc_object_reference); - objc_class_type = build_pointer_type (objc_class_reference); - - objc_object_name = get_identifier (OBJECT_TYPEDEF_NAME); - objc_class_name = get_identifier (CLASS_TYPEDEF_NAME); - - /* Declare the 'id' and 'Class' typedefs. */ - - type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL, - objc_object_name, - objc_object_type)); - DECL_IN_SYSTEM_HEADER (type) = 1; - type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL, - objc_class_name, - objc_class_type)); - DECL_IN_SYSTEM_HEADER (type) = 1; - - /* Forward-declare '@interface Protocol'. */ - - type = get_identifier (PROTOCOL_OBJECT_CLASS_NAME); - objc_declare_class (tree_cons (NULL_TREE, type, NULL_TREE)); - objc_protocol_type = build_pointer_type (xref_tag (RECORD_TYPE, - type)); - - /* Declare type of selector-objects that represent an operation name. */ - - if (flag_next_runtime) - /* `struct objc_selector *' */ - objc_selector_type - = build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier (TAG_SELECTOR))); - else - /* `const struct objc_selector *' */ - objc_selector_type - = build_pointer_type - (build_qualified_type (xref_tag (RECORD_TYPE, - get_identifier (TAG_SELECTOR)), - TYPE_QUAL_CONST)); - - /* Declare receiver type used for dispatching messages to 'super'. */ - - /* `struct objc_super *' */ - objc_super_type = build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier (TAG_SUPER))); - - /* Declare pointers to method and ivar lists. */ - objc_method_list_ptr = build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier (UTAG_METHOD_LIST))); - objc_method_proto_list_ptr - = build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier (UTAG_METHOD_PROTOTYPE_LIST))); - objc_ivar_list_ptr = build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier (UTAG_IVAR_LIST))); - - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - objc_prop_list_ptr - = build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier ("_prop_list_t"))); - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - - /* APPLE LOCAL begin ObjC new abi */ - if (flag_objc_abi == 2) - { - objc_v2_ivar_list_ptr = build_pointer_type ( - xref_tag (RECORD_TYPE, - get_identifier ("_ivar_list_t"))); - } - - /* typedef id (*IMP)(id, SEL, ...); */ - objc_imp_type - = build_pointer_type - (build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_selector_type, - NULL_TREE)))); - /* APPLE LOCAL end ObjC new abi */ - - /* TREE_NOTHROW is cleared for the message-sending functions, - because the function that gets called can throw in Obj-C++, or - could itself call something that can throw even in Obj-C. */ - - if (flag_next_runtime) - { - /* NB: In order to call one of the ..._stret (struct-returning) - functions, the function *MUST* first be cast to a signature that - corresponds to the actual ObjC method being invoked. This is - what is done by the build_objc_method_call() routine below. */ - - /* id objc_msgSend (id, SEL, ...); */ - /* id objc_msgSendNonNil (id, SEL, ...); */ - /* id objc_msgSend_stret (id, SEL, ...); */ - /* id objc_msgSendNonNil_stret (id, SEL, ...); */ - type - = build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_selector_type, - NULL_TREE))); - umsg_decl = builtin_function (TAG_MSGSEND, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - umsg_nonnil_decl = builtin_function (TAG_MSGSEND_NONNIL, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - umsg_stret_decl = builtin_function (TAG_MSGSEND_STRET, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - umsg_nonnil_stret_decl = builtin_function (TAG_MSGSEND_NONNIL_STRET, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - - /* APPLE LOCAL begin ObjC new abi */ - /* APPLE LOCAL ARM hybrid objc-2.0 */ - if (flag_objc_abi == 2 && !flag_objc_legacy_dispatch) - { - /* APPLE LOCAL radar 4699834 */ - /* Removed _rtp suffix from objc_msgSend_fixup_rtp and variants */ - build_message_ref_template (); - /* id objc_msgSend_fixup (id, struct message_ref_t*, ...); */ - type - = build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_v2_selector_type, - NULL_TREE))); - umsg_fixup_decl = builtin_function ("objc_msgSend_fixup", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_fixup_decl) = 0; - /* APPLE LOCAL begin radar 4557598 */ - umsg_fpret_fixup_decl = builtin_function ("objc_msgSend_fpret_fixup", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_fpret_fixup_decl) = 0; - /* APPLE LOCAL end radar 4557598 */ - - /* id objc_msgSend_stret_fixup (id, struct message_ref_t*, ...); */ - umsg_stret_fixup_decl = builtin_function ("objc_msgSend_stret_fixup", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_stret_fixup_decl) = 0; - - /* id objc_msgSendId_fixup (id, struct message_ref_t*, ...); */ - umsg_id_fixup_decl = builtin_function ("objc_msgSendId_fixup", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_id_fixup_decl) = 0; - - /* id objc_msgSendId_stret_fixup (id, struct message_ref_t*, ...); */ - umsg_id_stret_fixup_decl = builtin_function ("objc_msgSendId_stret_fixup", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_id_stret_fixup_decl) = 0; - - /* id objc_msgSendSuper2_fixup (struct objc_super *, struct message_ref_t*, ...); */ - type - = build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_super_type, - tree_cons (NULL_TREE, objc_v2_super_selector_type, - NULL_TREE))); - umsg_id_super2_fixup_decl = builtin_function ("objc_msgSendSuper2_fixup", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_id_super2_fixup_decl) = 0; - /* id objc_msgSendSuper2_stret_fixup (struct objc_super *, struct message_ref_t*, ...); */ - umsg_id_super2_stret_fixup_decl = builtin_function ("objc_msgSendSuper2_stret_fixup", - type, 0, NOT_BUILT_IN, 0, - NULL_TREE); - TREE_NOTHROW (umsg_id_super2_stret_fixup_decl) = 0; - - /* APPLE LOCAL radar 4533974 - ObjC new protocol */ - /* code removed */ - } - /* APPLE LOCAL end ObjC new abi */ - - /* APPLE LOCAL begin C* language */ - build_objc_fast_enum_state_type (); - - /* void objc_enumerationMutation (id) */ - type = build_function_type (void_type_node, - tree_cons (NULL_TREE, objc_object_type, NULL_TREE)); - objc_enum_mutation_decl = builtin_function ( - "objc_enumerationMutation", - type, 0, NOT_BUILT_IN, 0, NULL_TREE); - TREE_NOTHROW (objc_enum_mutation_decl) = 0; - - /* APPLE LOCAL end C* language */ - - /* APPLE LOCAL begin radar 4280641 */ - /* Not needed for ppc */ - umsg_fpret_decl = builtin_function (TAG_MSGSEND_FPRET, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_fpret_decl) = 0; - /* APPLE LOCAL end radar 4280641 */ - - /* These can throw, because the function that gets called can throw - in Obj-C++, or could itself call something that can throw even - in Obj-C. */ - TREE_NOTHROW (umsg_decl) = 0; - TREE_NOTHROW (umsg_nonnil_decl) = 0; - TREE_NOTHROW (umsg_stret_decl) = 0; - TREE_NOTHROW (umsg_nonnil_stret_decl) = 0; - - /* id objc_msgSend_Fast (id, SEL, ...) - __attribute__ ((hard_coded_address (OFFS_MSGSEND_FAST))); */ - /* APPLE LOCAL begin radar 4590221 */ - if (OFFS_MSGSEND_FAST) - { - umsg_decl = builtin_function (TAG_MSGSEND_FAST, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_decl) = 0; - DECL_ATTRIBUTES (umsg_decl) - = tree_cons (get_identifier ("hard_coded_address"), - build_int_cst (NULL_TREE, OFFS_MSGSEND_FAST), - NULL_TREE); - } - /* APPLE LOCAL end radar 4590221 */ - - /* id objc_msgSendSuper (struct objc_super *, SEL, ...); */ - /* id objc_msgSendSuper_stret (struct objc_super *, SEL, ...); */ - type - = build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_super_type, - tree_cons (NULL_TREE, objc_selector_type, - NULL_TREE))); - umsg_super_decl = builtin_function (TAG_MSGSENDSUPER, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - umsg_super_stret_decl = builtin_function (TAG_MSGSENDSUPER_STRET, - type, 0, NOT_BUILT_IN, 0, - NULL_TREE); - TREE_NOTHROW (umsg_super_decl) = 0; - TREE_NOTHROW (umsg_super_stret_decl) = 0; - } - else - { - /* GNU runtime messenger entry points. */ - - /* APPLE LOCAL begin ObjC new abi */ - /* code removed */ - /* APPLE LOCAL end ObjC new abi */ - /* IMP objc_msg_lookup (id, SEL); */ - type - /* APPLE LOCAL ObjC new abi */ - = build_function_type (objc_imp_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_selector_type, - OBJC_VOID_AT_END))); - umsg_decl = builtin_function (TAG_MSGSEND, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_decl) = 0; - - /* IMP objc_msg_lookup_super (struct objc_super *, SEL); */ - type - /* APPLE LOCAL ObjC new abi */ - = build_function_type (objc_imp_type, - tree_cons (NULL_TREE, objc_super_type, - tree_cons (NULL_TREE, objc_selector_type, - OBJC_VOID_AT_END))); - umsg_super_decl = builtin_function (TAG_MSGSENDSUPER, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (umsg_super_decl) = 0; - - /* The following GNU runtime entry point is called to initialize - each module: - - __objc_exec_class (void *); */ - type - = build_function_type (void_type_node, - tree_cons (NULL_TREE, ptr_type_node, - OBJC_VOID_AT_END)); - execclass_decl = builtin_function (TAG_EXECCLASS, - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - } - - /* id objc_getClass (const char *); */ - - type = build_function_type (objc_object_type, - tree_cons (NULL_TREE, - const_string_type_node, - OBJC_VOID_AT_END)); - - objc_get_class_decl - = builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - - /* id objc_getMetaClass (const char *); */ - - objc_get_meta_class_decl - = builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - - /* APPLE LOCAL begin radar 4698856 */ - if (flag_objc_abi == 2) - build_v2_class_template (); - /* APPLE LOCAL end radar 4698856 */ - - build_class_template (); - build_super_template (); - /* APPLE LOCAL begin ObjC new abi */ - if (flag_objc_abi == 2) - { - build_v2_protocol_template (); - build_v2_category_template (); - } - /* APPLE LOCAL end ObjC new abi */ - build_protocol_template (); - /* APPLE LOCAL begin 6348516 */ - save_warn_padded = warn_padded; - warn_padded = 0; - /* APPLE LOCAL end 6348516 */ - build_category_template (); - build_objc_exception_stuff (); - - if (flag_next_runtime) - build_next_objc_exception_stuff (); - - /* APPLE LOCAL 6348516 */ - warn_padded = save_warn_padded; - /* static SEL _OBJC_SELECTOR_TABLE[]; */ - - if (! flag_next_runtime) - build_selector_table_decl (); - - /* Forward declare constant_string_id and constant_string_type. */ - if (!constant_string_class_name) - constant_string_class_name = default_constant_string_class_name; - - constant_string_id = get_identifier (constant_string_class_name); - objc_declare_class (tree_cons (NULL_TREE, constant_string_id, NULL_TREE)); - - /* Pre-build the following entities - for speed/convenience. */ - self_id = get_identifier ("self"); - ucmd_id = get_identifier ("_cmd"); - -#ifdef OBJCPLUS - pop_lang_context (); -#endif - - write_symbols = save_write_symbols; - debug_hooks = save_hooks; - /* APPLE LOCAL radar 4590221 */ - /* code removed */ -} - -/* Ensure that the ivar list for NSConstantString/NXConstantString - (or whatever was specified via `-fconstant-string-class') - contains fields at least as large as the following three, so that - the runtime can stomp on them with confidence: - - struct STRING_OBJECT_CLASS_NAME - { - Object isa; - char *cString; - unsigned int length; - }; */ - -static int -check_string_class_template (void) -{ - tree field_decl = objc_get_class_ivars (constant_string_id); - -#define AT_LEAST_AS_LARGE_AS(F, T) \ - (F && TREE_CODE (F) == FIELD_DECL \ - && (TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (F))) \ - >= TREE_INT_CST_LOW (TYPE_SIZE (T)))) - - if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node)) - return 0; - - field_decl = TREE_CHAIN (field_decl); - if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node)) - return 0; - - field_decl = TREE_CHAIN (field_decl); - return AT_LEAST_AS_LARGE_AS (field_decl, unsigned_type_node); - -#undef AT_LEAST_AS_LARGE_AS -} - -/* Avoid calling `check_string_class_template ()' more than once. */ -static GTY(()) int string_layout_checked; - -/* Construct an internal string layout to be used as a template for - creating NSConstantString/NXConstantString instances. */ - -static tree -objc_build_internal_const_str_type (void) -{ - tree type = (*lang_hooks.types.make_type) (RECORD_TYPE); - tree fields = build_decl (FIELD_DECL, NULL_TREE, ptr_type_node); - tree field = build_decl (FIELD_DECL, NULL_TREE, ptr_type_node); - - TREE_CHAIN (field) = fields; fields = field; - field = build_decl (FIELD_DECL, NULL_TREE, unsigned_type_node); - TREE_CHAIN (field) = fields; fields = field; - /* NB: The finish_builtin_struct() routine expects FIELD_DECLs in - reverse order! */ - finish_builtin_struct (type, "__builtin_ObjCString", - fields, NULL_TREE); - - return type; -} - -/* Custom build_string which sets TREE_TYPE! */ - -static tree -my_build_string (int len, const char *str) -{ - return fix_string_type (build_string (len, str)); -} - -/* Build a string with contents STR and length LEN and convert it to a - pointer. */ - -static tree -my_build_string_pointer (int len, const char *str) -{ - tree string = my_build_string (len, str); - tree ptrtype = build_pointer_type (TREE_TYPE (TREE_TYPE (string))); - return build1 (ADDR_EXPR, ptrtype, string); -} - -static hashval_t -string_hash (const void *ptr) -{ - tree str = ((struct string_descriptor *)ptr)->literal; - const unsigned char *p = (const unsigned char *) TREE_STRING_POINTER (str); - int i, len = TREE_STRING_LENGTH (str); - hashval_t h = len; - - for (i = 0; i < len; i++) - h = ((h * 613) + p[i]); - - return h; -} - -static int -string_eq (const void *ptr1, const void *ptr2) -{ - tree str1 = ((struct string_descriptor *)ptr1)->literal; - tree str2 = ((struct string_descriptor *)ptr2)->literal; - int len1 = TREE_STRING_LENGTH (str1); - - return (len1 == TREE_STRING_LENGTH (str2) - && !memcmp (TREE_STRING_POINTER (str1), TREE_STRING_POINTER (str2), - len1)); -} - -/* APPLE LOCAL begin radar 5982789 */ -/* This routine build "NSString" type if "NSString" class is declared - in scope where it is needed. */ -static tree buildNSStringType(void) -{ - tree NSString_decl; - - NSString_decl = objc_is_class_name (get_identifier ("NSString")); - if (!NSString_decl) - return NULL_TREE; - return objc_get_protocol_qualified_type (NSString_decl, NULL_TREE); -} -/* APPLE LOCAL end radar 5982789 */ - -/* Given a chain of STRING_CST's, build a static instance of - NXConstantString which points at the concatenation of those - strings. We place the string object in the __string_objects - section of the __OBJC segment. The Objective-C runtime will - initialize the isa pointers of the string objects to point at the - NXConstantString class object. */ - -tree -objc_build_string_object (tree string) -{ - tree initlist, constructor, constant_string_class; - int length; - tree fields, addr; - struct string_descriptor *desc, key; - void **loc; - - /* APPLE LOCAL begin radar 5887355 */ -#ifdef OBJCPLUS - if (processing_template_decl) - /* Must wait until template instantiation time. */ - return build_min_nt (OBJC_STRING_REFERENCE, string); -#endif - /* APPLE LOCAL end radar 5887355 */ - - /* Prep the string argument. */ - string = fix_string_type (string); - TREE_SET_CODE (string, STRING_CST); - length = TREE_STRING_LENGTH (string) - 1; - - /* APPLE LOCAL begin constant cfstrings */ - /* The target may have different ideas on how to construct an - ObjC string literal. On Darwin (Mac OS X), for example, - we may wish to obtain a constant CFString reference instead. */ - constructor = (*targetm.construct_objc_string) (string); - /* APPLE LOCAL begin radar 4494634, 5982789 */ - if (constructor) - { - tree NSStringPtrType = buildNSStringType(); - return build1 (NOP_EXPR, - NSStringPtrType ? build_pointer_type (NSStringPtrType) - : objc_object_type, constructor); - } - /* APPLE LOCAL end radar 4494634, 5982789 */ - /* APPLE LOCAL end constant cfstrings */ - - /* Check whether the string class being used actually exists and has the - correct ivar layout. */ - if (!string_layout_checked) - { - string_layout_checked = -1; - constant_string_class = lookup_interface (constant_string_id); - internal_const_str_type = objc_build_internal_const_str_type (); - - if (!constant_string_class - || !(constant_string_type - = CLASS_STATIC_TEMPLATE (constant_string_class))) - error ("cannot find interface declaration for %qs", - IDENTIFIER_POINTER (constant_string_id)); - /* The NSConstantString/NXConstantString ivar layout is now known. */ - else if (!check_string_class_template ()) - error ("interface %qs does not have valid constant string layout", - IDENTIFIER_POINTER (constant_string_id)); - /* For the NeXT runtime, we can generate a literal reference - to the string class, don't need to run a constructor. */ - else if (flag_next_runtime && !setup_string_decl ()) - error ("cannot find reference tag for class %qs", - IDENTIFIER_POINTER (constant_string_id)); - else - { - string_layout_checked = 1; /* Success! */ - add_class_reference (constant_string_id); - } - } - - if (string_layout_checked == -1) - return error_mark_node; - - /* Perhaps we already constructed a constant string just like this one? */ - key.literal = string; - loc = htab_find_slot (string_htab, &key, INSERT); - desc = *loc; - - if (!desc) - { - tree var; - *loc = desc = ggc_alloc (sizeof (*desc)); - desc->literal = string; - - /* GNU: (NXConstantString *) & ((__builtin_ObjCString) { NULL, string, length }) */ - /* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */ - fields = TYPE_FIELDS (internal_const_str_type); - initlist - = build_tree_list (fields, - flag_next_runtime - ? build_unary_op (ADDR_EXPR, string_class_decl, 0) - /* APPLE LOCAL radar 6285794 */ - : integer_zero_node); - fields = TREE_CHAIN (fields); - initlist = tree_cons (fields, build_unary_op (ADDR_EXPR, string, 1), - initlist); - fields = TREE_CHAIN (fields); - initlist = tree_cons (fields, build_int_cst (NULL_TREE, length), - initlist); - constructor = objc_build_constructor (internal_const_str_type, - nreverse (initlist)); - TREE_INVARIANT (constructor) = true; - - if (!flag_next_runtime) - constructor - = objc_add_static_instance (constructor, constant_string_type); - else - { - var = build_decl (CONST_DECL, NULL, TREE_TYPE (constructor)); - DECL_INITIAL (var) = constructor; - TREE_STATIC (var) = 1; - pushdecl_top_level (var); - constructor = var; - } - desc->constructor = constructor; - } - - addr = convert (build_pointer_type (constant_string_type), - build_unary_op (ADDR_EXPR, desc->constructor, 1)); - - return addr; -} - -/* Declare a static instance of CLASS_DECL initialized by CONSTRUCTOR. */ - -static GTY(()) int num_static_inst; - -static tree -objc_add_static_instance (tree constructor, tree class_decl) -{ - tree *chain, decl; - char buf[256]; - - /* Find the list of static instances for the CLASS_DECL. Create one if - not found. */ - for (chain = &objc_static_instances; - *chain && TREE_VALUE (*chain) != class_decl; - chain = &TREE_CHAIN (*chain)); - if (!*chain) - { - *chain = tree_cons (NULL_TREE, class_decl, NULL_TREE); - add_objc_string (OBJC_TYPE_NAME (class_decl), class_names); - } - - sprintf (buf, "_OBJC_INSTANCE_%d", num_static_inst++); - decl = build_decl (VAR_DECL, get_identifier (buf), class_decl); - DECL_COMMON (decl) = 1; - TREE_STATIC (decl) = 1; - DECL_ARTIFICIAL (decl) = 1; - TREE_USED (decl) = 1; - DECL_INITIAL (decl) = constructor; - - /* We may be writing something else just now. - Postpone till end of input. */ - DECL_DEFER_OUTPUT (decl) = 1; - pushdecl_top_level (decl); - rest_of_decl_compilation (decl, 1, 0); - - /* Add the DECL to the head of this CLASS' list. */ - TREE_PURPOSE (*chain) = tree_cons (NULL_TREE, decl, TREE_PURPOSE (*chain)); - - return decl; -} - -/* Build a static constant CONSTRUCTOR - with type TYPE and elements ELTS. */ - -static tree -objc_build_constructor (tree type, tree elts) -{ - tree constructor = build_constructor_from_list (type, elts); - - TREE_CONSTANT (constructor) = 1; - TREE_STATIC (constructor) = 1; - TREE_READONLY (constructor) = 1; - -#ifdef OBJCPLUS - /* Adjust for impedance mismatch. We should figure out how to build - CONSTRUCTORs that consistently please both the C and C++ gods. */ - if (!TREE_PURPOSE (elts)) - TREE_TYPE (constructor) = NULL_TREE; - TREE_HAS_CONSTRUCTOR (constructor) = 1; -#endif - - return constructor; -} - -/* Take care of defining and initializing _OBJC_SYMBOLS. */ - -/* Predefine the following data type: - - struct _objc_symtab - { - long sel_ref_cnt; - SEL *refs; - short cls_def_cnt; - short cat_def_cnt; - void *defs[cls_def_cnt + cat_def_cnt]; - }; */ - -static void -build_objc_symtab_template (void) -{ - tree field_decl, field_decl_chain; - - objc_symtab_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_SYMTAB)); - - /* long sel_ref_cnt; */ - field_decl = create_field_decl (long_integer_type_node, "sel_ref_cnt"); - field_decl_chain = field_decl; - - /* SEL *refs; */ - field_decl = create_field_decl (build_pointer_type (objc_selector_type), - "refs"); - chainon (field_decl_chain, field_decl); - - /* short cls_def_cnt; */ - field_decl = create_field_decl (short_integer_type_node, "cls_def_cnt"); - chainon (field_decl_chain, field_decl); - - /* short cat_def_cnt; */ - field_decl = create_field_decl (short_integer_type_node, - "cat_def_cnt"); - chainon (field_decl_chain, field_decl); - - if (imp_count || cat_count || !flag_next_runtime) - { - /* void *defs[imp_count + cat_count (+ 1)]; */ - /* NB: The index is one less than the size of the array. */ - int index = imp_count + cat_count - + (flag_next_runtime? -1: 0); - field_decl = create_field_decl - (build_array_type - (ptr_type_node, - build_index_type (build_int_cst (NULL_TREE, index))), - "defs"); - chainon (field_decl_chain, field_decl); - } - - finish_struct (objc_symtab_template, field_decl_chain, NULL_TREE); -} - -/* Create the initial value for the `defs' field of _objc_symtab. - This is a CONSTRUCTOR. */ - -static tree -init_def_list (tree type) -{ - tree expr, initlist = NULL_TREE; - struct imp_entry *impent; - - if (imp_count) - for (impent = imp_list; impent; impent = impent->next) - { - if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE) - { - expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - - if (cat_count) - for (impent = imp_list; impent; impent = impent->next) - { - if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - - if (!flag_next_runtime) - { - /* statics = { ..., _OBJC_STATIC_INSTANCES, ... } */ - tree expr; - - if (static_instances_decl) - expr = build_unary_op (ADDR_EXPR, static_instances_decl, 0); - else - /* APPLE LOCAL radar 6285794 */ - expr = integer_zero_node; - - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - return objc_build_constructor (type, nreverse (initlist)); -} - -/* Construct the initial value for all of _objc_symtab. */ - -static tree -init_objc_symtab (tree type) -{ - tree initlist; - - /* sel_ref_cnt = { ..., 5, ... } */ - - initlist = build_tree_list (NULL_TREE, - build_int_cst (long_integer_type_node, 0)); - - /* refs = { ..., _OBJC_SELECTOR_TABLE, ... } */ - - if (flag_next_runtime || ! sel_ref_chain) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (build_pointer_type (objc_selector_type), - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - initlist - = tree_cons (NULL_TREE, - convert (build_pointer_type (objc_selector_type), - build_unary_op (ADDR_EXPR, - UOBJC_SELECTOR_TABLE_decl, 1)), - initlist); - - /* cls_def_cnt = { ..., 5, ... } */ - - /* APPLE LOCAL begin radar 4349670 */ - /* NULL_TREE for the type means to use integer_type_node. However, this should - be a short. */ - initlist = tree_cons (NULL_TREE, build_int_cst (short_integer_type_node, - imp_count), initlist); - - /* cat_def_cnt = { ..., 5, ... } */ - - initlist = tree_cons (NULL_TREE, build_int_cst (short_integer_type_node, - cat_count), initlist); - /* APPLE LOCAL end radar 4349670 */ - - /* cls_def = { ..., { &Foo, &Bar, ...}, ... } */ - - if (imp_count || cat_count || !flag_next_runtime) - { - - tree field = TYPE_FIELDS (type); - field = TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (field)))); - - initlist = tree_cons (NULL_TREE, init_def_list (TREE_TYPE (field)), - initlist); - } - - return objc_build_constructor (type, nreverse (initlist)); -} - -/* Generate forward declarations for metadata such as - 'OBJC_CLASS_...'. */ - -static tree -/* APPLE LOCAL radar 5202926 */ -build_metadata_decl (const char *name, tree type, bool external_linkage) -{ - tree decl; - - /* struct TYPE NAME_<name>; */ - decl = start_var_decl (type, synth_id_with_class_suffix - (name, - objc_implementation_context)); - /* APPLE LOCAL begin radar 5202926 */ - if (external_linkage) - TREE_PUBLIC (decl) = 1; - /* APPLE LOCAL end radar 5202926 */ - return decl; -} - -/* Push forward-declarations of all the categories so that - init_def_list can use them in a CONSTRUCTOR. */ - -static void -forward_declare_categories (void) -{ - struct imp_entry *impent; - tree sav = objc_implementation_context; - - for (impent = imp_list; impent; impent = impent->next) - { - if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - /* Set an invisible arg to synth_id_with_class_suffix. */ - objc_implementation_context = impent->imp_context; - /* APPLE LOCAL begin new ObjC abi v2 */ - if (flag_objc_abi == 2) - { - /* APPLE LOCAL begin radar 6064186 */ - /* extern struct category_t l_OBJC_$_CATEGORY_<name>; */ - impent->class_v2_decl = build_metadata_decl ("l_OBJC_$_CATEGORY", - /* APPLE LOCAL radar 5202926 */ - objc_v2_category_template, false); - set_user_assembler_name (impent->class_v2_decl, - IDENTIFIER_POINTER (DECL_NAME (impent->class_v2_decl))); - /* APPLE LOCAL end radar 6064186 */ - } - else - { - /* extern struct objc_category _OBJC_CATEGORY_<name>; */ - impent->class_decl = build_metadata_decl ("_OBJC_CATEGORY", - /* APPLE LOCAL radar 5202926 */ - objc_category_template, false); - } - /* APPLE LOCAL end new ObjC abi v2 */ - } - } - objc_implementation_context = sav; -} - -/* Create the declaration of _OBJC_SYMBOLS, with type `struct _objc_symtab' - and initialized appropriately. */ - -static void -generate_objc_symtab_decl (void) -{ - /* forward declare categories */ - if (cat_count) - forward_declare_categories (); - - /* APPLE LOCAL begin new ObjC abi v2 */ - /* APPLE LOCAL radar 4531482 */ - if (flag_objc_abi != 2) - { - build_objc_symtab_template (); - UOBJC_SYMBOLS_decl = start_var_decl (objc_symtab_template, "_OBJC_SYMBOLS"); - finish_var_decl (UOBJC_SYMBOLS_decl, - init_objc_symtab (TREE_TYPE (UOBJC_SYMBOLS_decl))); - } - /* APPLE LOCAL end new ObjC abi v2 */ -} - -static tree -init_module_descriptor (tree type) -{ - tree initlist, expr; - - /* version = { 1, ... } */ - - expr = build_int_cst (long_integer_type_node, OBJC_VERSION); - initlist = build_tree_list (NULL_TREE, expr); - - /* size = { ..., sizeof (struct _objc_module), ... } */ - - expr = convert (long_integer_type_node, - size_in_bytes (objc_module_template)); - initlist = tree_cons (NULL_TREE, expr, initlist); - - /* Don't provide any file name for security reasons. */ - /* name = { ..., "", ... } */ - - expr = add_objc_string (get_identifier (""), class_names); - initlist = tree_cons (NULL_TREE, expr, initlist); - - /* symtab = { ..., _OBJC_SYMBOLS, ... } */ - - if (UOBJC_SYMBOLS_decl) - expr = build_unary_op (ADDR_EXPR, UOBJC_SYMBOLS_decl, 0); - else - /* APPLE LOCAL radar 6285794 */ - expr = integer_zero_node; - initlist = tree_cons (NULL_TREE, expr, initlist); - - return objc_build_constructor (type, nreverse (initlist)); -} - -/* Write out the data structures to describe Objective C classes defined. - - struct _objc_module { ... } _OBJC_MODULE = { ... }; */ - -static void -build_module_descriptor (void) -{ - tree field_decl, field_decl_chain; - -#ifdef OBJCPLUS - push_lang_context (lang_name_c); /* extern "C" */ -#endif - - objc_module_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_MODULE)); - - /* long version; */ - field_decl = create_field_decl (long_integer_type_node, "version"); - field_decl_chain = field_decl; - - /* long size; */ - field_decl = create_field_decl (long_integer_type_node, "size"); - chainon (field_decl_chain, field_decl); - - /* char *name; */ - field_decl = create_field_decl (string_type_node, "name"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_symtab *symtab; */ - field_decl - = create_field_decl (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier (UTAG_SYMTAB))), - "symtab"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_module_template, field_decl_chain, NULL_TREE); - - /* Create an instance of "_objc_module". */ - UOBJC_MODULES_decl = start_var_decl (objc_module_template, "_OBJC_MODULES"); - finish_var_decl (UOBJC_MODULES_decl, - init_module_descriptor (TREE_TYPE (UOBJC_MODULES_decl))); - -#ifdef OBJCPLUS - pop_lang_context (); -#endif -} - -/* The GNU runtime requires us to provide a static initializer function - for each module: - - static void __objc_gnu_init (void) { - __objc_exec_class (&L_OBJC_MODULES); - } */ - -static void -build_module_initializer_routine (void) -{ - tree body; - -#ifdef OBJCPLUS - push_lang_context (lang_name_c); /* extern "C" */ -#endif - - objc_push_parm (build_decl (PARM_DECL, NULL_TREE, void_type_node)); - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - objc_start_function (get_identifier (TAG_GNUINIT), - build_function_type (void_type_node, - OBJC_VOID_AT_END), - NULL_TREE, objc_get_parm_info (0), NULL_TREE); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - - body = c_begin_compound_stmt (true); - add_stmt (build_function_call - (execclass_decl, - build_tree_list - (NULL_TREE, - build_unary_op (ADDR_EXPR, - UOBJC_MODULES_decl, 0)))); - add_stmt (c_end_compound_stmt (body, true)); - - TREE_PUBLIC (current_function_decl) = 0; - -#ifndef OBJCPLUS - /* For Objective-C++, we will need to call __objc_gnu_init - from objc_generate_static_init_call() below. */ - DECL_STATIC_CONSTRUCTOR (current_function_decl) = 1; -#endif - - GNU_INIT_decl = current_function_decl; - finish_function (); - -#ifdef OBJCPLUS - pop_lang_context (); -#endif -} - -#ifdef OBJCPLUS -/* Return 1 if the __objc_gnu_init function has been synthesized and needs - to be called by the module initializer routine. */ - -int -objc_static_init_needed_p (void) -{ - return (GNU_INIT_decl != NULL_TREE); -} - -/* Generate a call to the __objc_gnu_init initializer function. */ - -tree -objc_generate_static_init_call (tree ctors ATTRIBUTE_UNUSED) -{ - add_stmt (build_stmt (EXPR_STMT, - build_function_call (GNU_INIT_decl, NULL_TREE))); - - return ctors; -} -#endif /* OBJCPLUS */ - -/* Return the DECL of the string IDENT in the SECTION. */ -/* APPLE LOCAL begin radar 4359757 */ -/* This routine has been rewritten for compile-time performance improvement. */ - -static tree -get_objc_string_decl (tree ident, enum string_section section) -{ - hash *hash_table; - hash hsh; - - if (section == class_names) - hash_table = class_names_hash_list; - else if (section == meth_var_names) - hash_table = meth_var_names_hash_list; - else if (section == meth_var_types) - hash_table = meth_var_types_hash_list; - else if (section == prop_names_attr) - hash_table = prop_names_attr_hash_list; - else - abort (); - - hsh = hash_ident_lookup (hash_table, ident); - if (hsh) - return hsh->list->value; - - abort (); - return NULL_TREE; -} -/* APPLE LOCAL end radar 4359757 */ - -/* Output references to all statically allocated objects. Return the DECL - for the array built. */ - -static void -generate_static_references (void) -{ - tree decls = NULL_TREE, expr = NULL_TREE; - tree class_name, class, decl, initlist; - tree cl_chain, in_chain, type - = build_array_type (build_pointer_type (void_type_node), NULL_TREE); - int num_inst, num_class; - char buf[256]; - - if (flag_next_runtime) - abort (); - - for (cl_chain = objc_static_instances, num_class = 0; - cl_chain; cl_chain = TREE_CHAIN (cl_chain), num_class++) - { - for (num_inst = 0, in_chain = TREE_PURPOSE (cl_chain); - in_chain; num_inst++, in_chain = TREE_CHAIN (in_chain)); - - sprintf (buf, "_OBJC_STATIC_INSTANCES_%d", num_class); - decl = start_var_decl (type, buf); - - /* Output {class_name, ...}. */ - class = TREE_VALUE (cl_chain); - class_name = get_objc_string_decl (OBJC_TYPE_NAME (class), class_names); - initlist = build_tree_list (NULL_TREE, - build_unary_op (ADDR_EXPR, class_name, 1)); - - /* Output {..., instance, ...}. */ - for (in_chain = TREE_PURPOSE (cl_chain); - in_chain; in_chain = TREE_CHAIN (in_chain)) - { - expr = build_unary_op (ADDR_EXPR, TREE_VALUE (in_chain), 1); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* Output {..., NULL}. */ - /* APPLE LOCAL radar 6285794 */ - initlist = tree_cons (NULL_TREE, integer_zero_node, initlist); - - expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); - finish_var_decl (decl, expr); - decls - = tree_cons (NULL_TREE, build_unary_op (ADDR_EXPR, decl, 1), decls); - } - - /* APPLE LOCAL radar 6285794 */ - decls = tree_cons (NULL_TREE, integer_zero_node, decls); - expr = objc_build_constructor (type, nreverse (decls)); - static_instances_decl = start_var_decl (type, "_OBJC_STATIC_INSTANCES"); - finish_var_decl (static_instances_decl, expr); -} - -/* APPLE LOCAL begin radar 4349690 */ -/* MERGE FIXME 5416374 See how - - 2005-08-31 Andrew Pinski <pinskia@physics.uc.edu> PR objc/23306 - - Updated the code to not need update_var_decl and transform leftover code to use that strategy. */ - -/* This routine is used to get finish_decl to install an initializer for this - forward definition and get the declaration resent to the backend. After - this is called, finish_decl or finish_var_decl must be used. */ - -static tree -update_var_decl (tree decl) -{ - DECL_INITIAL (decl) = error_mark_node; - DECL_EXTERNAL (decl) = 0; - TREE_STATIC (decl) = 1; - TREE_ASM_WRITTEN (decl) = 0; - return decl; -} -/* APPLE LOCAL end radar 4349690 */ - -/* APPLE LOCAL begin ObjC new abi */ -static GTY(()) int classlist_reference_idx; - -/* This routine creates a global variable of type 'Class' to hold address of a - class. */ - -static tree -build_classlist_reference_decl (void) -{ - tree decl; - char buf[256]; - - sprintf (buf, "_OBJC_CLASSLIST_REFERENCES_$_%d", classlist_reference_idx++); - decl = start_var_decl (objc_class_type, buf); - - return decl; -} - -/* Routine builds name of Interface's main meta-data of type class_t. */ - -static char* -objc_build_internal_classname (tree ident, bool metaclass) -{ - static char string[BUFSIZE]; - sprintf (string, "%s_%s", !metaclass ? "OBJC_CLASS_$" - : "OBJC_METACLASS_$", - IDENTIFIER_POINTER (ident)); - return string; -} - -/* Build decl = initializer; for each externally visible class reference. */ - -static void -build_classlist_translation_table (bool metaclass_chain) -{ - tree chain; - - for (chain = !metaclass_chain ? classlist_ref_chain - : metaclasslist_ref_chain; - chain; chain = TREE_CHAIN (chain)) - { - tree expr = TREE_VALUE (chain); - tree decl = TREE_PURPOSE (chain); - /* Interface with no implementation and yet one of its messages has been - used. Need to generate a full address-of tree for it here. */ - if (TREE_CODE (expr) == IDENTIFIER_NODE) - { - expr = create_extern_decl (objc_v2_class_template, - objc_build_internal_classname (expr, metaclass_chain)); - expr = convert (objc_class_type, build_fold_addr_expr (expr)); - } - finish_var_decl (decl, expr); - } -} - -/* APPLE LOCAL begin radar 4561192 */ -/* Set the alignment to __attribute__ ((size_of_el_type)) */ - -static void -objc_set_alignment_attribute (tree decl, tree el_type) -{ - int int_size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (el_type)); - tree size = build_int_cst (NULL_TREE, int_size); - tree attribute = build_tree_list (get_identifier ("aligned"), - build_tree_list (NULL_TREE, size)); - decl_attributes (&decl, attribute, 0); - return; -} -/* APPLE LOCAL end radar 4561192 */ - -/* Build the __class_list section table containing address of all @implemented class - meta-data. */ - -static void -build_class_list_address_table (bool nonlazy) -{ - tree chain; - int count=0; - tree type; - tree initlist = NULL_TREE; - tree decl; - tree expr; - tree list_chain = nonlazy ? nonlazy_class_list_chain : class_list_chain; - const char *label_name = nonlazy ? "_OBJC_LABEL_NONLAZY_CLASS_$" - : "_OBJC_LABEL_CLASS_$"; - - for (chain = list_chain; chain; chain = TREE_CHAIN (chain)) - { - tree purpose = NULL_TREE; - expr = TREE_VALUE (chain); - expr = convert (objc_class_type, build_fold_addr_expr (expr)); -#ifndef OBJCPLUS - purpose = build_int_cst (NULL_TREE, count); -#endif - ++count; - initlist = tree_cons (purpose, expr, initlist); - } - gcc_assert (count > 0); - type = build_array_type (objc_class_type, - build_index_type (build_int_cst (NULL_TREE, count - 1))); - decl = start_var_decl (type, label_name); - expr = objc_build_constructor (type, nreverse (initlist)); - /* APPLE LOCAL radar 4561192 */ - objc_set_alignment_attribute (decl, objc_class_type); - finish_var_decl (decl, expr); -} - -/* Build the __category_list (NONLAZY is false) or __nonlazy_category (NONLAZY is true) - section table containing address of all @implemented category meta-data. */ - -static void -build_category_list_address_table (bool nonlazy) -{ - tree chain; - int count=0; - tree type; - tree initlist = NULL_TREE; - tree decl; - tree expr; - tree list_chain = nonlazy ? nonlazy_category_list_chain : category_list_chain; - const char * label_name = nonlazy ? "_OBJC_LABEL_NONLAZY_CATEGORY_$" - : "_OBJC_LABEL_CATEGORY_$"; - - for (chain = list_chain; chain; chain = TREE_CHAIN (chain)) - { - tree purpose = NULL_TREE; - expr = TREE_VALUE (chain); - expr = convert (objc_class_type, build_fold_addr_expr (expr)); -#ifndef OBJCPLUS - purpose = build_int_cst (NULL_TREE, count); -#endif - ++count; - initlist = tree_cons (purpose, expr, initlist); - } - gcc_assert (count > 0); - type = build_array_type (objc_class_type, - build_index_type (build_int_cst (NULL_TREE, count - 1))); - decl = start_var_decl (type, label_name); - expr = objc_build_constructor (type, nreverse (initlist)); - /* APPLE LOCAL radar 4561192 */ - objc_set_alignment_attribute (decl, objc_class_type); - finish_var_decl (decl, expr); -} -/* APPLE LOCAL end ObjC new abi */ - -static GTY(()) int selector_reference_idx; - -static tree -build_selector_reference_decl (void) -{ - tree decl; - char buf[256]; - - sprintf (buf, "_OBJC_SELECTOR_REFERENCES_%d", selector_reference_idx++); - decl = start_var_decl (objc_selector_type, buf); - - return decl; -} - -static void -build_selector_table_decl (void) -{ - tree temp; - - if (flag_typed_selectors) - { - build_selector_template (); - temp = build_array_type (objc_selector_template, NULL_TREE); - } - else - temp = build_array_type (objc_selector_type, NULL_TREE); - - UOBJC_SELECTOR_TABLE_decl = start_var_decl (temp, "_OBJC_SELECTOR_TABLE"); -} - -/* Just a handy wrapper for add_objc_string. */ - -static tree -build_selector (tree ident) -{ - return convert (objc_selector_type, - add_objc_string (ident, meth_var_names)); -} - -static void -build_selector_translation_table (void) -{ - tree chain, initlist = NULL_TREE; - int offset = 0; - tree decl = NULL_TREE; - - for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain)) - { - tree expr; - - if (warn_selector && objc_implementation_context) - { - tree method_chain; - bool found = false; - for (method_chain = meth_var_names_chain; - method_chain; - method_chain = TREE_CHAIN (method_chain)) - { - if (TREE_VALUE (method_chain) == TREE_VALUE (chain)) - { - found = true; - break; - } - } - if (!found) - { - location_t *loc; - if (flag_next_runtime && TREE_PURPOSE (chain)) - loc = &DECL_SOURCE_LOCATION (TREE_PURPOSE (chain)); - else - loc = &input_location; - warning (0, "%Hcreating selector for nonexistent method %qE", - loc, TREE_VALUE (chain)); - } - } - - expr = build_selector (TREE_VALUE (chain)); - /* add one for the '\0' character */ - offset += IDENTIFIER_LENGTH (TREE_VALUE (chain)) + 1; - - if (flag_next_runtime) - { - decl = TREE_PURPOSE (chain); - finish_var_decl (decl, expr); - } - else - { - if (flag_typed_selectors) - { - tree eltlist = NULL_TREE; - tree encoding = get_proto_encoding (TREE_PURPOSE (chain)); - eltlist = tree_cons (NULL_TREE, expr, NULL_TREE); - eltlist = tree_cons (NULL_TREE, encoding, eltlist); - expr = objc_build_constructor (objc_selector_template, - nreverse (eltlist)); - } - - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - - if (! flag_next_runtime) - { - /* Cause the selector table (previously forward-declared) - to be actually output. */ - initlist = tree_cons (NULL_TREE, - flag_typed_selectors - ? objc_build_constructor - (objc_selector_template, - tree_cons (NULL_TREE, - /* APPLE LOCAL radar 6285794 */ - integer_zero_node, - tree_cons (NULL_TREE, - /* APPLE LOCAL radar 6285794 */ - integer_zero_node, - NULL_TREE))) - /* APPLE LOCAL radar 6285794 */ - : integer_zero_node, initlist); - initlist = objc_build_constructor (TREE_TYPE (UOBJC_SELECTOR_TABLE_decl), - nreverse (initlist)); - finish_var_decl (UOBJC_SELECTOR_TABLE_decl, initlist); - } -} - -static tree -get_proto_encoding (tree proto) -{ - tree encoding; - if (proto) - { - if (! METHOD_ENCODING (proto)) - { - encoding = encode_method_prototype (proto); - METHOD_ENCODING (proto) = encoding; - } - else - encoding = METHOD_ENCODING (proto); - - return add_objc_string (encoding, meth_var_types); - } - else - /* APPLE LOCAL radar 6285794 */ - return integer_zero_node; -} - -/* sel_ref_chain is a list whose "value" fields will be instances of - identifier_node that represent the selector. */ - -static tree -build_typed_selector_reference (tree ident, tree prototype) -{ - tree *chain = &sel_ref_chain; - tree expr; - int index = 0; - - while (*chain) - { - if (TREE_PURPOSE (*chain) == prototype && TREE_VALUE (*chain) == ident) - goto return_at_index; - - index++; - chain = &TREE_CHAIN (*chain); - } - - *chain = tree_cons (prototype, ident, NULL_TREE); - - return_at_index: - expr = build_unary_op (ADDR_EXPR, - build_array_ref (UOBJC_SELECTOR_TABLE_decl, - build_int_cst (NULL_TREE, index)), - 1); - return convert (objc_selector_type, expr); -} - -/* APPLE LOCAL begin radar 4359757 */ -/* New routine replacing old build_selector_reference to improve - compile-time performance. */ -static tree -build_next_runtime_selector_reference (tree ident) -{ - hash hsh; - tree *chain = &sel_ref_chain; - tree expr; - - hsh = hash_ident_lookup (sel_ref_hash_list, ident); - if (hsh) - return hsh->list->value; - - expr = build_selector_reference_decl (); - hsh = hash_ident_enter (sel_ref_hash_list, ident); - hash_add_attr (hsh, expr); - - *chain = tree_cons (expr, ident, *chain); - - return expr; -} - -static tree -build_selector_reference (tree ident) -{ - tree *chain = &sel_ref_chain; - tree expr; - int index = 0; - - while (*chain) - { - if (TREE_VALUE (*chain) == ident) - return build_array_ref (UOBJC_SELECTOR_TABLE_decl, - build_int_cst (NULL_TREE, index)); - - index++; - chain = &TREE_CHAIN (*chain); - } - - expr = NULL_TREE; - *chain = tree_cons (expr, ident, NULL_TREE); - - return build_array_ref (UOBJC_SELECTOR_TABLE_decl, - build_int_cst (NULL_TREE, index)); -} -/* APPLE LOCAL end radar 4359757 */ - -/* APPLE LOCAL begin ObjC new abi */ -/* Declare a variable of type 'struct message_ref_t'. */ - -static GTY(()) int message_reference_idx; - -/* APPLE LOCAL begin radar 5575115 - radar 6064186 */ -static tree -build_message_reference_decl (tree sel_name, tree message_func_ident) -{ - tree decl; - char *buf; - char *temp; - int fixed_prefix_size = - 2 + IDENTIFIER_LENGTH (message_func_ident) + 1; - buf = (char *)alloca (fixed_prefix_size + - strlen (IDENTIFIER_POINTER (sel_name)) + 1); - sprintf (buf, "l_%s_%s", IDENTIFIER_POINTER (message_func_ident), - IDENTIFIER_POINTER (sel_name)); - for (temp = buf+fixed_prefix_size; *temp; temp++) - if (*temp == ':') *temp = '_'; - - decl = create_hidden_decl (objc_v2_message_ref_template, buf); - DECL_WEAK (decl) = 1; - set_user_assembler_name (decl, buf); - return decl; -} -/* APPLE LOCAL end radar 5575115 - radar 6064186 */ - -/* Build the list of (objc_msgSend_fixup_xxx, selector name) Used later on to - initialize the table of 'struct message_ref_t' elements. */ - -static tree -build_selector_messenger_reference (tree sel_name, tree message_func_decl) -{ - tree *chain = &message_ref_chain; - tree mess_expr; - - while (*chain) - { - if (TREE_VALUE (*chain) == message_func_decl) - { - if (TREE_CHAIN (*chain) && TREE_VALUE (TREE_CHAIN (*chain)) == sel_name) - return TREE_PURPOSE (*chain); - } - chain = &TREE_CHAIN (*chain); - } - - /* APPLE LOCAL radar 5575115 - radar 6064186 */ - mess_expr = build_message_reference_decl (sel_name, DECL_NAME (message_func_decl)); - *chain = tree_cons (mess_expr, message_func_decl, NULL_TREE); - - chain = &TREE_CHAIN (*chain); - - *chain = tree_cons (NULL_TREE, sel_name, NULL_TREE); - - return mess_expr; -} - -/* Build the struct message_ref_t msg = - {objc_msgSend_fixup_xxx, @selector(func)} - table. */ - -static void -build_message_ref_translation_table (void) -{ - tree chain; - tree decl = NULL_TREE; - for (chain = message_ref_chain; chain; chain = TREE_CHAIN (chain)) - { - tree expr; - tree fields; - tree initializer = NULL_TREE; - tree constructor; - tree struct_type; - - decl = TREE_PURPOSE (chain); - struct_type = TREE_TYPE (decl); - fields = TYPE_FIELDS (struct_type); - - /* First 'IMP messenger' field */ - expr = build_unary_op (ADDR_EXPR, TREE_VALUE (chain), 0); - /* APPLE LOCAL begin radar 4582204 */ - expr = convert (objc_v2_imp_type, expr); - initializer = build_tree_list (NULL_TREE, expr); - /* APPLE LOCAL end radar 4582204 */ - - /* Next the 'SEL name' field */ - fields = TREE_CHAIN (fields); - gcc_assert (TREE_CHAIN (chain)); - chain = TREE_CHAIN (chain); - expr = build_selector (TREE_VALUE (chain)); - /* APPLE LOCAL radar 4582204 */ - initializer = tree_cons (NULL_TREE, expr, initializer); - constructor = objc_build_constructor (struct_type, nreverse (initializer)); - TREE_INVARIANT (constructor) = true; - finish_var_decl (decl, constructor); - } -} - -/* Assign all arguments in VALUES which have side-effect to a temporary and - replaced that argument in VALUES list with the temporary. TYPELIST is the - list of argument types. */ - -static tree -objc_copy_to_temp_side_effect_params (tree typelist, tree values) -{ - tree valtail, typetail; - /* skip over receiver and the &_msf_ref types */ - gcc_assert (TREE_CHAIN (typelist)); - typetail = TREE_CHAIN (TREE_CHAIN (typelist)); - - for (valtail = values; - valtail; - valtail = TREE_CHAIN (valtail), typetail = TREE_CHAIN (typetail)) - { - tree value = TREE_VALUE (valtail); - tree type = typetail ? TREE_VALUE (typetail) : NULL_TREE; - if (type == NULL_TREE) - break; - if (!TREE_SIDE_EFFECTS (value)) - continue; - /* To prevent reevaluation */ - value = save_expr (value); - add_stmt (value); - TREE_VALUE (valtail) = value; - } - return values; -} -/* APPLE LOCAL end ObjC new abi */ - -static GTY(()) int class_reference_idx; - -static tree -build_class_reference_decl (void) -{ - tree decl; - char buf[256]; - - sprintf (buf, "_OBJC_CLASS_REFERENCES_%d", class_reference_idx++); - decl = start_var_decl (objc_class_type, buf); - - return decl; -} - -/* Create a class reference, but don't create a variable to reference - it. */ - -static void -add_class_reference (tree ident) -{ - tree chain; - - if ((chain = cls_ref_chain)) - { - tree tail; - do - { - if (ident == TREE_VALUE (chain)) - return; - - tail = chain; - chain = TREE_CHAIN (chain); - } - while (chain); - - /* Append to the end of the list */ - TREE_CHAIN (tail) = tree_cons (NULL_TREE, ident, NULL_TREE); - } - else - cls_ref_chain = tree_cons (NULL_TREE, ident, NULL_TREE); -} - -/* APPLE LOCAL begin ObjC abi v2 */ -/* This routine builds the class_reference_chain for each class name used - in a [super class_name] message. IDENT is current a class's name. Initially, - a (global_name, IDENT) tuple is added to the list. But in call to - build_classlist_translation_table (), each IDENT is replaced with address of - the class metadata (of type 'Class'). */ - -static tree -objc_v2_get_class_reference (tree ident) -{ - tree *chain; - tree decl; - - for (chain = &classlist_ref_chain; *chain; chain = &TREE_CHAIN (*chain)) - if (TREE_VALUE (*chain) == ident) - { - if (! TREE_PURPOSE (*chain)) - TREE_PURPOSE (*chain) = build_classlist_reference_decl (); - - return TREE_PURPOSE (*chain); - } - - decl = build_classlist_reference_decl (); - *chain = tree_cons (decl, ident, NULL_TREE); - return decl; -} -/* APPLE LOCAL end ObjC abi v2 */ - -/* APPLE LOCAL begin radar 4535676 */ - -/* This routine creates a global variable of type 'Class' to hold address of a - class. */ - -static tree -build_classlist_super_reference_decl (void) -{ - tree decl; - char buf[256]; - - sprintf (buf, "_OBJC_CLASSLIST_SUP_REFS_$_%d", classlist_reference_idx++); - decl = start_var_decl (objc_class_type, buf); - - return decl; -} -/* This routine builds the class_super_ref_chain/metaclass_super_ref_chain - for each class name used in a [super class_name] message. IDENT is - current a class's name. Initially, - a (global_name, IDENT) tuple is added to the list. But in call to - build_classlist_translation_table (), each IDENT is replaced with address of - the class metadata (of type 'Class'). */ - -static tree -objc_v2_get_class_super_reference (tree ident, bool inst) -{ - tree *chain; - tree decl; - - for (chain = inst ? &classlist_super_ref_chain : &metaclasslist_super_ref_chain; - *chain; chain = &TREE_CHAIN (*chain)) - if (TREE_VALUE (*chain) == ident) - { - if (! TREE_PURPOSE (*chain)) - TREE_PURPOSE (*chain) = build_classlist_super_reference_decl (); - - return TREE_PURPOSE (*chain); - } - - decl = build_classlist_super_reference_decl (); - *chain = tree_cons (decl, ident, NULL_TREE); - return decl; -} - -/* Build decl = initializer; for each externally visible class reference. */ - -static void -build_classlist_super_translation_table (bool metaclass_chain) -{ - tree chain; - - for (chain = !metaclass_chain ? classlist_super_ref_chain - : metaclasslist_super_ref_chain; - chain; chain = TREE_CHAIN (chain)) - { - tree expr = TREE_VALUE (chain); - tree decl = TREE_PURPOSE (chain); - /* Interface with no implementation and yet one of its messages has been - used. Need to generate a full address-of tree for it here. */ - if (TREE_CODE (expr) == IDENTIFIER_NODE) - { - expr = create_extern_decl (objc_v2_class_template, - objc_build_internal_classname (expr, metaclass_chain)); - expr = convert (objc_class_type, build_fold_addr_expr (expr)); - } - finish_var_decl (decl, expr); - } -} -/* APPLE LOCAL end radar 4535676 */ - -/* Get a class reference, creating it if necessary. Also create the - reference variable. */ - -tree -objc_get_class_reference (tree ident) -{ - tree orig_ident = (DECL_P (ident) - ? DECL_NAME (ident) - : TYPE_P (ident) - ? OBJC_TYPE_NAME (ident) - : ident); - bool local_scope = false; - - /* APPLE LOCAL begin prevent extra error diagnostics. */ - if (orig_ident == error_mark_node) - return orig_ident; - /* APPLE LOCAL end prevent extra error diagnostics. */ - -#ifdef OBJCPLUS - if (processing_template_decl) - /* Must wait until template instantiation time. */ - return build_min_nt (CLASS_REFERENCE_EXPR, ident); -#endif - - if (TREE_CODE (ident) == TYPE_DECL) - ident = (DECL_ORIGINAL_TYPE (ident) - ? DECL_ORIGINAL_TYPE (ident) - : TREE_TYPE (ident)); - -#ifdef OBJCPLUS - if (TYPE_P (ident) && TYPE_CONTEXT (ident) - && TYPE_CONTEXT (ident) != global_namespace) - local_scope = true; -#endif - - if (local_scope || !(ident = objc_is_class_name (ident))) - { - error ("%qs is not an Objective-C class name or alias", - IDENTIFIER_POINTER (orig_ident)); - return error_mark_node; - } - - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2 && !flag_zero_link) - return objc_v2_get_class_reference (ident); - /* APPLE LOCAL end ObjC abi v2 */ - if (flag_next_runtime && !flag_zero_link) - { - tree *chain; - tree decl; - - for (chain = &cls_ref_chain; *chain; chain = &TREE_CHAIN (*chain)) - if (TREE_VALUE (*chain) == ident) - { - if (! TREE_PURPOSE (*chain)) - TREE_PURPOSE (*chain) = build_class_reference_decl (); - - return TREE_PURPOSE (*chain); - } - - decl = build_class_reference_decl (); - *chain = tree_cons (decl, ident, NULL_TREE); - return decl; - } - else - { - tree params; - - add_class_reference (ident); - - params = build_tree_list (NULL_TREE, - my_build_string_pointer - (IDENTIFIER_LENGTH (ident) + 1, - IDENTIFIER_POINTER (ident))); - - assemble_external (objc_get_class_decl); - return build_function_call (objc_get_class_decl, params); - } -} - -/* APPLE LOCAL begin radar 4359757 */ -/* New routine to do hash lookup keyed on IDENTIFIER node. */ - -static hash -hash_ident_lookup (hash *hashlist, tree sel_name) -{ - hash target; - - target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; - - while (target) - { - if (sel_name == target->key) - return target; - - target = target->next; - } - return 0; -} - -/* New routine to add IDENTIFIER node to hash table. */ -static hash -hash_ident_enter (hash *hashlist, tree ident) -{ - hash obj; - int slot = hash_func (ident) % SIZEHASHTABLE; - - obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); - obj->list = 0; - obj->next = hashlist[slot]; - obj->key = ident; - - hashlist[slot] = obj; /* append to front */ - return obj; -} - -/* For each string section we have a chain which maps identifier nodes - to decls for the strings. */ - -static tree -add_objc_string (tree ident, enum string_section section) -{ - /* APPLE LOCAL do not create an unreferenced decl */ - tree *chain, decl, type, string_expr, sectionname; - hash *hash_table; - hash hsh; - - if (section == class_names) - { - chain = &class_names_chain; - hash_table = class_names_hash_list; - } - else if (section == meth_var_names) - { - chain = &meth_var_names_chain; - hash_table = meth_var_names_hash_list; - } - else if (section == meth_var_types) - { - chain = &meth_var_types_chain; - hash_table = meth_var_types_hash_list; - } - else if (section == prop_names_attr) - { - chain = &prop_names_attr_chain; - hash_table = prop_names_attr_hash_list; - } - else - abort (); - - hsh = hash_ident_lookup (hash_table, ident); - if (hsh) - return convert (string_type_node, - build_unary_op (ADDR_EXPR, hsh->list->value, 1)); - - /* APPLE LOCAL do not create an unreferenced decl */ - sectionname = build_objc_string_ident (section); - - type = build_array_type - (char_type_node, - build_index_type - (build_int_cst (NULL_TREE, - IDENTIFIER_LENGTH (ident)))); - /* APPLE LOCAL do not create an unreferenced decl */ - decl = start_var_decl (type, IDENTIFIER_POINTER (sectionname)); - string_expr = my_build_string (IDENTIFIER_LENGTH (ident) + 1, - IDENTIFIER_POINTER (ident)); - finish_var_decl (decl, string_expr); - - hsh = hash_ident_enter (hash_table, ident); - hash_add_attr (hsh, decl); - *chain = tree_cons (decl, ident, *chain); - - return convert (string_type_node, build_unary_op (ADDR_EXPR, decl, 1)); -} -/* APPLE LOCAL end radar 4359757 */ - -static GTY(()) int class_names_idx; -static GTY(()) int meth_var_names_idx; -static GTY(()) int meth_var_types_idx; -/* APPLE LOCAL C* property metadata (Radar 4498373) */ -static GTY(()) int property_name_attr_idx; - -static tree -/* APPLE LOCAL do not create an unreferenced decl */ -build_objc_string_ident (enum string_section section) -{ -/* APPLE LOCAL begin do not create an unreferenced decl */ -/* APPLE LOCAL end do not create an unreferenced decl */ - char buf[256]; - - if (section == class_names) - sprintf (buf, "_OBJC_CLASS_NAME_%d", class_names_idx++); - else if (section == meth_var_names) - sprintf (buf, "_OBJC_METH_VAR_NAME_%d", meth_var_names_idx++); - else if (section == meth_var_types) - sprintf (buf, "_OBJC_METH_VAR_TYPE_%d", meth_var_types_idx++); - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - else if (section == prop_names_attr) - sprintf (buf, "_OBJC_PROP_NAME_ATTR_%d", property_name_attr_idx++); - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - /* APPLE LOCAL begin do not create an unreferenced decl */ - return get_identifier (buf); - /* APPLE LOCAL end do not create an unreferenced decl */ -} - - -void -objc_declare_alias (tree alias_ident, tree class_ident) -{ - tree underlying_class; - -#ifdef OBJCPLUS - if (current_namespace != global_namespace) { - error ("Objective-C declarations may only appear in global scope"); - } -#endif /* OBJCPLUS */ - - if (!(underlying_class = objc_is_class_name (class_ident))) - warning (0, "cannot find class %qs", IDENTIFIER_POINTER (class_ident)); - else if (objc_is_class_name (alias_ident)) - warning (0, "class %qs already exists", IDENTIFIER_POINTER (alias_ident)); - else - { - /* Implement @compatibility_alias as a typedef. */ -#ifdef OBJCPLUS - push_lang_context (lang_name_c); /* extern "C" */ -#endif - lang_hooks.decls.pushdecl (build_decl - (TYPE_DECL, - alias_ident, - xref_tag (RECORD_TYPE, underlying_class))); -#ifdef OBJCPLUS - pop_lang_context (); -#endif - /* APPLE LOCAL begin radar 4345837 */ - hash_class_name_enter (als_name_hash_list, alias_ident, - underlying_class); - /* APPLE LOCAL end radar 4345837 */ - } -} - -void -objc_declare_class (tree ident_list) -{ - tree list; -#ifdef OBJCPLUS - if (current_namespace != global_namespace) { - error ("Objective-C declarations may only appear in global scope"); - } -#endif /* OBJCPLUS */ - - for (list = ident_list; list; list = TREE_CHAIN (list)) - { - tree ident = TREE_VALUE (list); - - if (! objc_is_class_name (ident)) - { - tree record = lookup_name (ident), type = record; - - if (record) - { - if (TREE_CODE (record) == TYPE_DECL) - /* APPLE LOCAL begin radar 4278236 */ - type = DECL_ORIGINAL_TYPE (record) ? - DECL_ORIGINAL_TYPE (record) : - TREE_TYPE (record); - /* APPLE LOCAL end radar 4278236 */ - - /* APPLE LOCAL radar 4829851 */ - if (TREE_CODE (type) != RECORD_TYPE || !TYPE_HAS_OBJC_INFO (type) - || !TYPE_OBJC_INTERFACE (type)) - { - error ("%qs redeclared as different kind of symbol", - IDENTIFIER_POINTER (ident)); - error ("previous declaration of %q+D", - record); - } - } - - record = xref_tag (RECORD_TYPE, ident); - INIT_TYPE_OBJC_INFO (record); - TYPE_OBJC_INTERFACE (record) = ident; - /* APPLE LOCAL radar 4345837 */ - hash_class_name_enter (cls_name_hash_list, ident, NULL_TREE); - } - } -} - -tree -objc_is_class_name (tree ident) -{ - /* APPLE LOCAL radar 4345837 */ - hash target; - - if (ident && TREE_CODE (ident) == IDENTIFIER_NODE - && identifier_global_value (ident)) - ident = identifier_global_value (ident); - while (ident && TREE_CODE (ident) == TYPE_DECL && DECL_ORIGINAL_TYPE (ident)) - ident = OBJC_TYPE_NAME (DECL_ORIGINAL_TYPE (ident)); - - if (ident && TREE_CODE (ident) == RECORD_TYPE) - ident = OBJC_TYPE_NAME (ident); -#ifdef OBJCPLUS - if (ident && TREE_CODE (ident) == TYPE_DECL) - /* APPLE LOCAL begin radar 4407151 */ - { - tree type = TREE_TYPE (ident); - if (type && TREE_CODE (type) == TEMPLATE_TYPE_PARM) - return NULL_TREE; - ident = DECL_NAME (ident); - } - /* APPLE LOCAL end radar 4407151 */ -#endif - if (!ident || TREE_CODE (ident) != IDENTIFIER_NODE) - return NULL_TREE; - - if (lookup_interface (ident)) - return ident; - /* APPLE LOCAL begin radar 4345837 */ - target = hash_class_name_lookup (cls_name_hash_list, ident); - if (target) - return target->key; - - target = hash_class_name_lookup (als_name_hash_list, ident); - if (target) - { - gcc_assert (target->list && target->list->value); - return target->list->value; - } - /* APPLE LOCAL end radar 4345837 */ - - return 0; -} - -/* Check whether TYPE is either 'id' or 'Class'. */ - -tree -objc_is_id (tree type) -{ - if (type && TREE_CODE (type) == IDENTIFIER_NODE - && identifier_global_value (type)) - type = identifier_global_value (type); - - if (type && TREE_CODE (type) == TYPE_DECL) - type = TREE_TYPE (type); - - /* NB: This function may be called before the ObjC front-end has - been initialized, in which case OBJC_OBJECT_TYPE will (still) be NULL. */ - return (objc_object_type && type - && (IS_ID (type) || IS_CLASS (type) || IS_SUPER (type)) - ? type - : NULL_TREE); -} - -/* Check whether TYPE is either 'id', 'Class', or a pointer to an ObjC - class instance. This is needed by other parts of the compiler to - handle ObjC types gracefully. */ - -tree -objc_is_object_ptr (tree type) -{ - tree ret; - /* APPLE LOCAL begin radar 5595325 */ - if (objc_nsobject_attribute_type (type)) - return TREE_TYPE (type); - /* APPLE LOCAL end radar 5595325 */ - - type = TYPE_MAIN_VARIANT (type); - if (!POINTER_TYPE_P (type)) - return 0; - - ret = objc_is_id (type); - if (!ret) - /* APPLE LOCAL ObjC GC */ - ret = objc_is_class_name (TYPE_MAIN_VARIANT (TREE_TYPE (type))); - - return ret; -} - -/* APPLE LOCAL begin ObjC GC */ -/* Return 1 if TYPE should be garbage collected, -1 if has __weak attribut - and 0 otherwise. Types marked with the '__strong' attribute are GC-able, - whereas those marked with __weak' are not. Types marked with neither - attribute are GC-able if (a) they are Objective-C pointer types or (b) - they are pointers to types that are themselves GC-able. */ - -/* APPLE LOCAL end ObjC GC */ -/* APPLE LOCAL radar 5847976 */ -int -/* APPLE LOCAL ObjC GC */ -objc_is_gcable_type (tree type) -{ - /* APPLE LOCAL begin objc gc 5547128 */ - int strong; - /* APPLE LOCAL end objc gc 5547128 */ - - /* APPLE LOCAL ObjC GC */ - /* CODE FRAGMENT REMOVED. */ - /* APPLE LOCAL begin radar 4829803 */ - if (!TYPE_P (type) -#ifdef OBJCPLUS - || type_unknown_p (type) -#endif - ) - /* APPLE LOCAL end radar 4829803 */ - return 0; - /* APPLE LOCAL begin ObjC GC */ - - /* APPLE LOCAL objc gc 5547128 */ - strong = 0; - do - { - /* The '__strong' and '__weak' keywords trump all. */ - /* APPLE LOCAL objc gc 5547128 */ - strong = objc_is_strong_p (type); - - /* APPLE LOCAL begin radar 4426814 */ - if (strong) - /* APPLE LOCAL objc gc 5547128 */ - break; - /* APPLE LOCAL end radar 4426814 */ - - /* APPLE LOCAL begin objc gc 5547128 */ - /* Function pointers are not GC-able. */ - if (TREE_CODE (type) == FUNCTION_TYPE - || TREE_CODE (type) == METHOD_TYPE) - break; - /* APPLE LOCAL end objc gc 5547128 */ - - /* Objective-C objects are GC-able, unless they were tagged with - '__weak'. */ - if (objc_is_object_ptr (type)) - /* APPLE LOCAL radar 4426814 */ - /* APPLE LOCAL begin objc gc 5547128 */ - { - strong = (objc_is_strong_p (TREE_TYPE (type)) >= 0 ? 1 : -1); - break; - } - /* APPLE LOCAL begin radar 5882266, 5832193 */ - /* Block pointer types are GC-able, unless they were tagged with - '__weak' */ - if (TREE_CODE (type) == BLOCK_POINTER_TYPE) - { - strong = block_pointer_strong_value (type); - break; - } - /* APPLE LOCAL end radar 5882266, 5832193 */ - /* APPLE LOCAL end objc gc 5547128 */ - - type = TREE_TYPE (type); - } - while (type); - - /* APPLE LOCAL objc gc 5547128 */ - return strong; -} -/* APPLE LOCAL end ObjC GC */ -/* APPLE LOCAL begin radar 4982951 */ -/* This routine retrievs the outervar of the objc2 tree EXPR representing address of an ivar. - Tree EXPR is in the form of ((*typeof ivar)(OUTERVAR + OBJC2_IVAR_OFFSET_VAR)). - It returns OUTERVAR. Note that input EXPR tree is already validate via call to - objc_v2_ivar_reference. So no additional checking is done in this routine. */ -static -tree objc2_outervar (tree expr) -{ - gcc_assert (TREE_CODE (expr) == NOP_EXPR); - expr = TREE_OPERAND (expr, 0); - gcc_assert (TREE_CODE (expr) == PLUS_EXPR); - return TREE_OPERAND (expr, 0); -} - -/* This routine builds * ((typeof (INDIR)*) 0 + OFFSET) - This tree corresponds to * (&((typeof(outervar) *) 0)->ivar) in 'fragile' objc1 - abi. (see comment in objc_build_ivar_assignment) -*/ - -static tree -objc2_build_indirect_ref_ivar2 (tree indir, tree offset, tree newoutervar) -{ - tree ftype = TREE_TYPE (indir); - tree expr = build_c_cast (string_type_node, newoutervar); - /* (char*)newoutervar + offset */ - expr = fold (build2 (PLUS_EXPR, string_type_node, expr, offset)); - - /* (ftype*)((char*)newoutervar + offset) */ - expr = build_c_cast (build_pointer_type (ftype), expr); - - /* Finally: *(ftype*)((char*)newoutervar + offset) */ - expr = build_indirect_ref (expr, "unary *"); - return expr; -} /* This comment appeases the checklocal daemon. */ -/* APPLE LOCAL end radar 4982951 */ - -static tree -objc_substitute_decl (tree expr, tree oldexpr, tree newexpr) -{ - if (expr == oldexpr) - return newexpr; - - switch (TREE_CODE (expr)) - { - case COMPONENT_REF: - return objc_build_component_ref - (objc_substitute_decl (TREE_OPERAND (expr, 0), - oldexpr, - newexpr), - DECL_NAME (TREE_OPERAND (expr, 1))); - case ARRAY_REF: - return build_array_ref (objc_substitute_decl (TREE_OPERAND (expr, 0), - oldexpr, - newexpr), - TREE_OPERAND (expr, 1)); - case INDIRECT_REF: - /* APPLE LOCAL begin radar 4982951 */ - { - tree ivar_offset_var; - ivar_offset_var = objc_v2_ivar_reference (expr); - if (ivar_offset_var != NULL_TREE) - return objc2_build_indirect_ref_ivar2 (expr, ivar_offset_var, newexpr); - } - /* APPLE LOCAL end radar 4982951 */ - return build_indirect_ref (objc_substitute_decl (TREE_OPERAND (expr, 0), - oldexpr, - newexpr), "->"); - default: - return expr; - } -} - -static tree -/* APPLE LOCAL radar 4995066 */ -objc_build_ivar_assignment (tree outervar, bool objc2_ivar_ref, tree lhs, tree rhs) -{ - tree func_params; - /* The LHS parameter contains the expression 'outervar->memberspec'; - we need to transform it into '&((typeof(outervar) *) 0)->memberspec', - where memberspec may be arbitrarily complex (e.g., 'g->f.d[2].g[3]'). - */ - /* APPLE LOCAL begin radar 4783068 */ - tree offs, func; - int save_warn_invalid_offsetof = warn_invalid_offsetof; - warn_invalid_offsetof = 0; - /* APPLE LOCAL begin radar 4982951 */ - /* APPLE LOCAL radar 4995066 */ - if (flag_objc_abi == 2 && objc2_ivar_ref) - outervar = objc2_outervar (outervar); - /* APPLE LOCAL end radar 4982951 */ - offs - = objc_substitute_decl - (lhs, outervar, convert (TREE_TYPE (outervar), integer_zero_node)); - warn_invalid_offsetof = save_warn_invalid_offsetof; - /* APPLE LOCAL radar 4590221 */ - func = objc_assign_ivar_decl; - /* APPLE LOCAL end radar 4783068 */ - - /* APPLE LOCAL objc gc 5547128 */ - offs = convert (ptrdiff_type_node, build_unary_op (ADDR_EXPR, offs, 0)); - offs = fold (offs); - func_params = tree_cons (NULL_TREE, - convert (objc_object_type, rhs), - tree_cons (NULL_TREE, convert (objc_object_type, outervar), - tree_cons (NULL_TREE, offs, - NULL_TREE))); - - assemble_external (func); - return build_function_call (func, func_params); -} - -static tree -/* APPLE LOCAL radar 4426814 */ -objc_build_global_assignment (tree lhs, tree rhs, int strong) -{ - tree func_params = tree_cons (NULL_TREE, - convert (objc_object_type, rhs), - tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type), - build_unary_op (ADDR_EXPR, lhs, 0)), - NULL_TREE)); - /* APPLE LOCAL begin radar 4426814 */ - tree func = (strong == 1) ? objc_assign_global_decl : objc_assign_weak_decl; - - assemble_external (func); - return build_function_call (func, func_params); -} -/* APPLE LOCAL end radar 4426814 */ - -/* APPLE LOCAL begin radar 4426814 */ - -/* APPLE LOCAL begin radar 4591756 */ -/* This routine generates call to objc_read_weak (&EXPR); */ - -static tree -objc_build_weak_read (tree expr) -{ - tree func_params; - expr = build_unary_op (ADDR_EXPR, expr, 1); - expr = convert (build_pointer_type (objc_object_type), expr); - func_params = tree_cons (NULL_TREE, expr, NULL_TREE); - - assemble_external (objc_read_weak_decl); - return build_function_call (objc_read_weak_decl, func_params); -} -/* APPLE LOCAL end radar 4591756 */ - -/* APPLE LOCAL begin radar 5276085 */ -/* Return TRUE if EXPR is a 'weak' expression */ -static bool -objc_tree_is_weak_expr (tree expr) -{ -#ifdef OBJCPLUS - if (processing_template_decl) - return false; -#endif - if (skip_evaluation || TREE_CODE (expr) == OBJC_WEAK_REFERENCE_EXPR - || TREE_TYPE (expr) == NULL_TREE) - return false; - - return (objc_is_gcable_p (expr) == -1); -} - -/* This routine builds a tree referencing the 'weak' object pointer expression */ -tree -objc_build_weak_reference_tree (tree expr) -{ - /* APPLE LOCAL begin radar 5847976 */ - if (!flag_objc_gc) - return expr; - /* APPLE LOCAL end radar 5847976 */ - return objc_tree_is_weak_expr (expr) ? - build1 (OBJC_WEAK_REFERENCE_EXPR, TREE_TYPE (expr), expr) : expr; -} - -/* Return 'weak' reference object pointer expression */ -void -objc_weak_reference_expr (tree *ref) -{ - tree expr = *ref; - if (expr && TREE_CODE (expr) == OBJC_WEAK_REFERENCE_EXPR) - *ref = TREE_OPERAND (expr, 0); -} -/* APPLE LOCAL end radar 5276085 */ -/* APPLE LOCAL end radar 4426814 */ - - -static tree -objc_build_strong_cast_assignment (tree lhs, tree rhs) -{ - /* APPLE LOCAL begin objc gc 5547128 */ - tree func_params - = tree_cons (NULL_TREE, - convert (objc_object_type, rhs), - tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type), - build_unary_op (ADDR_EXPR, lhs, 0)), - NULL_TREE)); - /* APPLE LOCAL end objc gc 5547128 */ - - assemble_external (objc_assign_strong_cast_decl); - return build_function_call (objc_assign_strong_cast_decl, func_params); -} - -/* APPLE LOCAL begin radar 4592503 */ -/* This routine checks to see if a local variable or a structure field - has __weak attribute and issues warning in that case. */ -void -objc_checkon_weak_attribute (tree decl) -{ - /* APPLE LOCAL begin radar 5747976 */ - if (!flag_objc_gc) - return; - /* APPLE LOCAL end radar 5747976 */ - if (decl && DECL_P (decl)) - { - if (objc_collecting_ivars - || (TREE_CODE (decl) == VAR_DECL - && (TREE_STATIC (decl) || DECL_EXTERNAL (decl)))) - return; - - /* APPLE LOCAL radar 5847976 */ - if ((TREE_CODE (decl) == FIELD_DECL || (TREE_CODE (decl) == VAR_DECL && !COPYABLE_BYREF_LOCAL_VAR (decl))) - && objc_is_gcable_type (TREE_TYPE (decl)) == -1) - { - location_t saved_location = input_location; - input_location = DECL_SOURCE_LOCATION (decl); - warning (0, "__weak attribute cannot be specified on a %s declaration", - TREE_CODE (decl) == FIELD_DECL ? "field" : "local object"); - input_location = saved_location; - return; - } - } -} - -/* APPLE LOCAL end radar 4592503 */ - -/* APPLE LOCAL begin radar 3742561 */ -/* This routine build a call to void *objc_memmove_collectable (&LHS, &RHS, sizeof(TYPE)) -*/ -static tree -objc_build_memmove_collectable (tree lhs, tree rhs, tree type) -{ - tree arg1 = convert (ptr_type_node, build_unary_op (ADDR_EXPR, lhs, 1)); - tree arg2 = convert (ptr_type_node, build_unary_op (ADDR_EXPR, rhs, 1)); - int size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type)); - tree arg3 = build_int_cst (NULL_TREE, size); - tree func_params = tree_cons (NULL_TREE, arg1, - tree_cons (NULL_TREE, arg2, - tree_cons (NULL_TREE, arg3, NULL_TREE))); - assemble_external (objc_memmove_collectable_decl); - return build_function_call (objc_memmove_collectable_decl, func_params); -} - -/* Check aggregate type and return 1 if it contains a field of object pointer type or one - whose pointer type is '__strong'. */ - -static int -objc_aggr_type_strong (tree aggr_type) -{ - tree fieldlist, field_decl; - - if (!flag_objc_gc && !flag_objc_gc_only) - return 0; - - gcc_assert (TREE_CODE (aggr_type) == RECORD_TYPE - || TREE_CODE (aggr_type) == UNION_TYPE); - - fieldlist = TYPE_FIELDS (aggr_type); - - for (field_decl = fieldlist; field_decl; field_decl = TREE_CHAIN (field_decl)) - { - if (TREE_TYPE (field_decl) == error_mark_node) - continue; - - if (field_decl && TREE_CODE (field_decl) == FIELD_DECL - && DECL_NAME (field_decl) && !DECL_BIT_FIELD_TYPE (field_decl) -#ifdef OBJCPLUS - && !TREE_STATIC (field_decl) -#endif - ) - { - tree field_type = TREE_TYPE (field_decl); - if (TREE_CODE (field_type) == ARRAY_TYPE) - { - /* Get element type of the array. */ - field_type = TREE_TYPE (field_type); - while (TREE_CODE (field_type) == ARRAY_TYPE) - field_type = TREE_TYPE (field_type); - } - if (TREE_CODE (field_type) == RECORD_TYPE || TREE_CODE (field_type) == UNION_TYPE) - { - if (objc_aggr_type_strong (field_type)) - return 1; - else - continue; - } - if (objc_is_gcable_type (field_type) == 1) - return 1; - continue; - } - } - return 0; -} -/* APPLE LOCAL end radar 3742561 */ - -/* APPLE LOCAL begin ObjC GC */ -/* Return 1 if EXPR is marked with the __strong attribute, -1 if it is marked - with the __weak attribute, and 0 if it is marked with neither (regardless - if it is otherwise GC-able). */ - -static int -objc_is_strong_p (tree expr) -{ - if (TYPE_P (expr) || DECL_P (expr)) - { - tree attr = lookup_attribute ("objc_gc", - (TYPE_P (expr) - ? TYPE_ATTRIBUTES (expr) - : DECL_ATTRIBUTES (expr))); - - if (attr && TREE_VALUE (attr)) - { - if (TREE_VALUE (TREE_VALUE (attr)) == get_identifier ("strong")) - return 1; - - if (TREE_VALUE (TREE_VALUE (attr)) == get_identifier ("weak")) - return -1; - } - } - - return 0; -} - -/* Return 1 (__strong) if a call to a write-barrier should be generated when assigning - to EXPR. Return -1 if a call to objc_assign_weak should be generated when assigning - to EXPR with a __weak attribute; 0 otherwise. */ - -/* APPLE LOCAL end ObjC GC */ -static int -objc_is_gcable_p (tree expr) -/* APPLE LOCAL begin ObjC GC */ -{ - tree t = TREE_TYPE (expr); - /* The '__strong' and '__weak' keywords trump all. */ - int strong = objc_is_strong_p (t); - - /* APPLE LOCAL begin radar 4426814 */ - if (strong) - return strong; - /* APPLE LOCAL end radar 4426814 */ - - /* Discard lvalue casts, if any. */ - while (TREE_CODE (expr) == INDIRECT_REF - && TREE_CODE (TREE_OPERAND (expr, 0)) == NOP_EXPR - && TREE_CODE (TREE_OPERAND (TREE_OPERAND (expr, 0), 0)) == ADDR_EXPR) - expr = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (expr, 0), 0), 0); - - /* Zero in on the variable/parameter being assigned to. */ - while (TREE_CODE (expr) == COMPONENT_REF || TREE_CODE (expr) == ARRAY_REF) - expr = TREE_OPERAND (expr, 0); - - /* Parameters and local variables (and their fields) are NOT GC-able. */ - if (TREE_CODE (expr) == PARM_DECL || - (TREE_CODE (expr) == VAR_DECL - && DECL_CONTEXT (expr) - && !TREE_STATIC (expr))) - return 0; - - return objc_is_gcable_type (t); -} -/* APPLE LOCAL end ObjC GC */ - -/* APPLE LOCAL begin radar 4894756 */ -/* This routine checks and returns true if tree is reference to an 'ivar' through the ivar offset - variable reference. See objc_v2_build_ivar_ref for detail of how this tree is generated. */ - -static -tree objc_v2_ivar_reference (tree expr) -{ - if (flag_objc_abi < 2 || TREE_CODE (expr) != INDIRECT_REF) - return NULL_TREE; - expr = TREE_OPERAND (expr, 0); - if (TREE_CODE (expr) != NOP_EXPR) - return NULL_TREE; - expr = TREE_OPERAND (expr, 0); - if (TREE_CODE (expr) != PLUS_EXPR) - return NULL_TREE; - expr = TREE_OPERAND (expr, 1); - - return (TREE_CODE (expr) == VAR_DECL && DECL_NAME (expr) - && strncmp (IDENTIFIER_POINTER (DECL_NAME (expr)), STRING_V2_IVAR_OFFSET_PREFIX, - strlen (STRING_V2_IVAR_OFFSET_PREFIX)) == 0) ? expr : NULL_TREE; -} -/* APPLE LOCAL end radar 4894756 */ - -/* APPLE LOCAL begin radar 4591756 */ -static tree -objc_strip_off_indirection (tree expr) -{ - if ((TREE_CODE (expr) == INDIRECT_REF && (objc_v2_ivar_reference (expr) == NULL_TREE)) - || TREE_CODE (expr) == NOP_EXPR - || TREE_CODE (expr) == ADDR_EXPR || TREE_CODE (expr) == PLUS_EXPR) - return objc_strip_off_indirection (TREE_OPERAND (expr, 0)); - return expr; -} -/* APPLE LOCAL end radar 4591756 */ - -static int -objc_is_ivar_reference_p (tree expr) -{ - return (TREE_CODE (expr) == ARRAY_REF - ? objc_is_ivar_reference_p (TREE_OPERAND (expr, 0)) - : TREE_CODE (expr) == COMPONENT_REF - ? TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL - /* APPLE LOCAL objc2 4894756 */ - : (objc_v2_ivar_reference (expr) != NULL_TREE)); -} - -static int -objc_is_global_reference_p (tree expr) -{ - return (TREE_CODE (expr) == INDIRECT_REF || TREE_CODE (expr) == PLUS_EXPR - ? objc_is_global_reference_p (TREE_OPERAND (expr, 0)) - : DECL_P (expr) - ? (!DECL_CONTEXT (expr) || TREE_STATIC (expr)) - : 0); -} - -tree -objc_generate_write_barrier (tree lhs, enum tree_code modifycode, tree rhs) -{ - /* APPLE LOCAL begin ObjC GC */ - tree outer; - int indirect_p = 0; - /* APPLE LOCAL radar 4426814 */ - int strong; - bool objc2_ivar_ref; - /* APPLE LOCAL begin radar 3742561 */ - tree lhs_type = TREE_TYPE (lhs); - if (TREE_CODE (lhs_type) == RECORD_TYPE || TREE_CODE (lhs_type) == UNION_TYPE) - { - strong = objc_aggr_type_strong (lhs_type); - return strong ? objc_build_memmove_collectable (lhs, rhs, lhs_type) - : NULL_TREE; - } - /* APPLE LOCAL end radar 3742561 */ - - /* APPLE LOCAL begin objc gc 5547128 */ - /* Only pointers need barriers. We can get here when - __strong float *p; p[0] = 3.14; */ - /* APPLE LOCAL begin radar 5832193 */ - if (TREE_CODE (lhs_type) != POINTER_TYPE - && TREE_CODE (TREE_TYPE (rhs)) != POINTER_TYPE - && TREE_CODE (lhs_type) != BLOCK_POINTER_TYPE - && TREE_CODE (TREE_TYPE (rhs)) != BLOCK_POINTER_TYPE) - /* APPLE LOCAL end radar 5832193 */ - return NULL_TREE; - /* APPLE LOCAL end objc gc 5547128 */ - - /* the lhs must be of a suitable type, regardless of its underlying - structure. Furthermore, __weak must not have been used. */ - /* APPLE LOCAL radar 4426814 */ - if ((strong = objc_is_gcable_p (lhs)) == 0) - return NULL_TREE; - - /* At this point, we are committed to using one of the write-barriers, - unless the user is attempting to perform pointer arithmetic. */ - /* APPLE LOCAL radar 4291099 */ - if (modifycode != NOP_EXPR && modifycode != INIT_EXPR) - { - warning (0, "pointer arithmetic for garbage-collected objects not allowed"); - return NULL_TREE; - } - /* APPLE LOCAL end ObjC GC */ - /* APPLE LOCAL radar 4291099 */ - gcc_assert (modifycode != INIT_EXPR || c_dialect_cxx ()); - - /* APPLE LOCAL ObjC GC */ - /* CODE FRAGMENT REMOVED. */ - outer = lhs; - - /* APPLE LOCAL begin radar 4591756 */ - if (strong == -1) - outer = objc_strip_off_indirection (outer); - /* APPLE LOCAL end radar 4591756 */ - while (outer - && (TREE_CODE (outer) == COMPONENT_REF - || TREE_CODE (outer) == ARRAY_REF)) - outer = TREE_OPERAND (outer, 0); - - /* APPLE LOCAL objc2 */ - objc2_ivar_ref = objc_v2_ivar_reference (outer) != NULL_TREE; - /* APPLE LOCAL objc2 */ - if (TREE_CODE (outer) == INDIRECT_REF && !objc2_ivar_ref) - { - outer = TREE_OPERAND (outer, 0); - indirect_p = 1; - } - - /* APPLE LOCAL ObjC GC */ - /* CODE FRAGMENT REMOVED. */ - - /* Handle ivar assignments. */ - /* APPLE LOCAL begin ObjC GC */ - /* APPLE LOCAL begin radar 4591756 */ - if (indirect_p && objc_is_ivar_reference_p (strong == -1 - ? objc_strip_off_indirection (lhs) - : lhs) - /* APPLE LOCAL end radar 4591756 */ - && objc_is_object_ptr (TREE_TYPE (outer))) - /* APPLE LOCAL end ObjC GC */ - { - /* APPLE LOCAL ObjC GC */ - /* CODE FRAGMENT REMOVED. */ - if (warn_assign_intercept) - warning (0, "instance variable assignment has been intercepted"); - - /* APPLE LOCAL begin radar 4426814 */ - /* APPLE LOCAL ObjC GC */ - return strong == 1 - /* APPLE LOCAL radar 4995066 */ - ? objc_build_ivar_assignment (outer, objc2_ivar_ref, lhs, rhs) - : objc_build_global_assignment (lhs, rhs, strong); - /* APPLE LOCAL end radar 4426814 */ - } - /* APPLE LOCAL begin objc2 */ - if (!indirect_p && objc2_ivar_ref) - { - if (warn_assign_intercept) - warning (0, "instance variable assignment has been intercepted"); - - return strong == 1 - /* APPLE LOCAL radar 4995066 */ - ? objc_build_ivar_assignment (TREE_OPERAND (outer, 0), objc2_ivar_ref, lhs, rhs) - : objc_build_global_assignment (lhs, rhs, strong); - } - /* APPLE LOCAL end objc2 */ - /* Likewise, intercept assignment to global/static variables if their type is - GC-marked. */ - /* APPLE LOCAL ObjC GC */ - if (!indirect_p && objc_is_global_reference_p (outer)) - { - /* APPLE LOCAL ObjC GC */ - /* CODE FRAGMENT REMOVED. */ - /* APPLE LOCAL begin confused diff */ - if (warn_assign_intercept) - warning (0, "global/static variable assignment has been intercepted"); - /* APPLE LOCAL end confused diff */ - - /* APPLE LOCAL begin radar 4426814 */ - /* APPLE LOCAL ObjC GC */ - return objc_build_global_assignment (lhs, rhs, strong); - /* APPLE LOCAL end radar 4426814 */ - /* APPLE LOCAL confused diff */ - } - /* APPLE LOCAL begin radar 4426814 */ - if (strong == -1) - { - /* APPLE LOCAL begin radar 5847976 */ - /* Must generate write barrier for __block objects which are __weak - and used in an assignment. */ - if (TREE_CODE (outer) == COMPONENT_REF && TREE_OPERAND (outer, 0) - && TREE_CODE (TREE_OPERAND (outer, 0)) == VAR_DECL) - { - tree var_decl = TREE_OPERAND (outer, 0); - if (COPYABLE_WEAK_BLOCK (var_decl)) - return objc_build_global_assignment (lhs, rhs, -1); - } - /* APPLE LOCAL end radar 5847976 */ - return NULL_TREE; - } - /* APPLE LOCAL end radar 4426814 */ - - /* APPLE LOCAL begin ObjC GC */ - /* Use the strong-cast write barrier as a last resort. */ - if (warn_assign_intercept) - warning (0, "strong-cast assignment has been intercepted"); - - return objc_build_strong_cast_assignment (lhs, rhs); - /* APPLE LOCAL end ObjC GC */ -/* APPLE LOCAL confused diff */ -} - -/* APPLE LOCAL begin ObjC new abi */ - -/* This routine returns the ivar declaration, if component is a valid ivar field; - NULL_TREE otherwise. On finding an ivar, it also returns the class name in CLASS. */ - -static tree -objc_is_ivar (tree expr, tree component, tree *class) -{ - tree field = NULL_TREE; - tree basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr)); - - if (TREE_CODE (basetype) == RECORD_TYPE - && TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype)) - { - *class = lookup_interface (OBJC_TYPE_NAME (basetype)); - if (*class) - { - do - { - tree ivar_chain = CLASS_RAW_IVARS (*class); - if (ivar_chain) - { - field = is_ivar (ivar_chain, component); - if (field != NULL_TREE) - break; - } - *class = lookup_interface (CLASS_SUPER_NAME (*class)); - } - while (*class); - } - } - return field; -} - -/* APPLE LOCAL begin radar 4441049 */ -/* This routine creates an OFFSET_IVAR variable for COMPONENT_REF EXP - and returns it. This routine is for bitfield ivars only. */ -tree -objc_v2_component_ref_field_offset (tree exp) -{ - char var_offset_name[512]; - tree class_name, offset; - tree datum = TREE_OPERAND (exp, 0); - tree field = TREE_OPERAND (exp, 1); - tree component = DECL_NAME (field); - - /* unnamed bitfields are not user ivars. */ - if (!component) - return NULL_TREE; - - if (!((flag_objc_abi == 2) - && (field = objc_is_ivar (datum, component, &class_name)))) - return NULL_TREE; - - /* This routine must only be called for bitfield ivars. */ - /* DECL_INITIAL macro is set to width of bitfield and can be relied on to - check for bitfield ivars. Note that I cannot rely on DECL_BIT_FIELD macro - because it is only set when the whole struct is seen (at finish_struct) - and not when the ivar chain is built. */ - gcc_assert (DECL_INITIAL (field)); - - create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), - field); - /* NOTE! type of variable for ivar offset MUST match type of offset assumed - by the front-end. Otherwise, FE asserts when attempting to do futher - math on the tree whose one operand is one of these offsets. */ - offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name); - return offset; -} - -/* This routine computes the bit position from the beginning of its byte. - This is only done for bitfield ivars. */ - -tree -objc_v2_bitfield_ivar_bitpos (tree exp) -{ - tree class_name; - int bitpos; - tree datum = TREE_OPERAND (exp, 0); - tree field = TREE_OPERAND (exp, 1); - tree component = DECL_NAME (field); - tree ivar_field; - - if (!((flag_objc_abi == 2) - && (ivar_field = objc_is_ivar (datum, component, &class_name)))) - return NULL_TREE; - - /* This routine must only be called for bitfield ivars. */ - /* DECL_INITIAL macro is set to width of bitfield and can be relied on to - check for bitfield ivars. Note that I cannot rely on DECL_BIT_FIELD macro - because it is only set when the whole struct is seen (at finish_struct) - and not when the ivar chain is built. */ - gcc_assert (DECL_INITIAL (ivar_field)); - - bitpos = tree_low_cst (DECL_FIELD_BIT_OFFSET (field), 0); - bitpos = bitpos % BITS_PER_UNIT; - return build_int_cst (TREE_TYPE (bitsize_zero_node), bitpos); -} - -/* APPLE LOCAL end radar 4441049 */ - -/* This routine generates new abi's ivar reference tree. It amounts to generating - *(TYPE*)((char*)pObj + OFFSET_IVAR) when we normally generate pObj->IVAR - OFFSET_IVAR is an 'extern' variable holding the offset for 'IVAR' field. TYPE - is type of IVAR field. */ - -tree -objc_v2_build_ivar_ref (tree datum, tree component) -{ - tree field, ref, class_name, offset, ftype, expr; - char var_offset_name[512]; - - if (!((flag_objc_abi == 2) - && (field = objc_is_ivar (datum, component, &class_name)))) - return NULL_TREE; - - /* APPLE LOCAL begin radar 4441049 */ - /* This routine only handles non-bitfield fields */ - /* DECL_INITIAL macro is set to width of bitfield and can be relied on to - check for bitfield ivars. Note that I cannot rely on DECL_BIT_FIELD macro - because it is only set when the whole struct is seen (at finish_struct) - and not when the ivar chain is built. */ - if (DECL_INITIAL (field)) - return NULL_TREE; - /* APPLE LOCAL end radar 4441049 */ - /* APPLE LOCAL begin radar 4954480 */ - if (TREE_CODE (datum) == INDIRECT_REF && (TREE_OPERAND (datum, 0) == null_pointer_node -#ifdef OBJCPLUS - || (TREE_CODE (TREE_OPERAND (datum, 0)) == NOP_EXPR - && TREE_OPERAND (TREE_OPERAND (datum, 0), 0) == null_pointer_node) -#endif - )) - { - /* APPLE LOCAL radar 6230800 */ - error ("Illegal reference to non-fragile ivar"); - return error_mark_node; - } - /* APPLE LOCAL end radar 4954480 */ - - create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), - field); - /* APPLE LOCAL radar 4441049 */ - offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name); - - ftype = TREE_TYPE (field); - - /* (char*)datum */ - expr = build_c_cast (string_type_node, - build_fold_addr_expr (datum)); - - /* (char*)datum + offset */ - expr = fold (build2 (PLUS_EXPR, string_type_node, expr, offset)); - - /* (ftype*)((char*)datum + offset) */ - expr = build_c_cast (build_pointer_type (ftype), expr); - - /* Finally: *(ftype*)((char*)datum + offset) */ - ref = build_indirect_ref (expr, "unary *"); - - /* We must set type of the resulting expression to be the same as the - field type. This is because, build_indirect_ref (...) rebuilds the - type which may result in lost information; as in the case of - protocol-qualified types (id <protocol> ). */ - TREE_TYPE (ref) = ftype; - - if (TREE_READONLY (datum) || TREE_READONLY (field)) - TREE_READONLY (ref) = 1; - - if (TREE_THIS_VOLATILE (datum) || TREE_THIS_VOLATILE (field)) - TREE_THIS_VOLATILE (ref) = 1; - - if (TREE_DEPRECATED (field)) - warn_deprecated_use (field); - - /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ - if (TREE_UNAVAILABLE (field)) - error_unavailable_use (field); - /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ - - /* APPLE LOCAL begin radar 5376125 */ - if (!flag_objc_gc && warn_direct_ivar_access) - objc_warn_direct_ivar_access (TYPE_MAIN_VARIANT (TREE_TYPE (datum)), - component); - /* APPLE LOCAL end radar 5376125 */ - return ref; -} -/* APPLE LOCAL end ObjC new abi */ - -struct interface_tuple GTY(()) -{ - tree id; - tree class_name; -}; - -static GTY ((param_is (struct interface_tuple))) htab_t interface_htab; - -static hashval_t -hash_interface (const void *p) -{ - const struct interface_tuple *d = p; - return IDENTIFIER_HASH_VALUE (d->id); -} - -static int -eq_interface (const void *p1, const void *p2) -{ - const struct interface_tuple *d = p1; - return d->id == p2; -} - -static tree -lookup_interface (tree ident) -{ -#ifdef OBJCPLUS - if (ident && TREE_CODE (ident) == TYPE_DECL) - ident = DECL_NAME (ident); -#endif - - if (ident == NULL_TREE || TREE_CODE (ident) != IDENTIFIER_NODE) - return NULL_TREE; - - { - struct interface_tuple **slot; - tree i = NULL_TREE; - - if (interface_htab) - { - slot = (struct interface_tuple **) - htab_find_slot_with_hash (interface_htab, ident, - IDENTIFIER_HASH_VALUE (ident), - NO_INSERT); - if (slot && *slot) - i = (*slot)->class_name; - } - return i; - } -} - -/* Implement @defs (<classname>) within struct bodies. */ - -tree -objc_get_class_ivars (tree class_name) -{ - tree interface = lookup_interface (class_name); - - if (interface) - return get_class_ivars (interface, true); - - error ("cannot find interface declaration for %qs", - IDENTIFIER_POINTER (class_name)); - - return error_mark_node; -} - -/* APPLE LOCAL begin radar 4291785 */ -/* Generate an error for any duplicate field names in FIELDLIST. Munge - the list such that this does not present a problem later. */ - -void -objc_detect_field_duplicates (tree fieldlist) -{ - tree x, y; - int timeout = 10; -#ifdef OBJCPLUS - /* for objective-c++, we only care about duplicate checking of ivars. */ - if (!objc_collecting_ivars) - return; -#endif - - /* First, see if there are more than "a few" fields. - This is trivially true if there are zero or one fields. */ - if (!fieldlist) - return; - x = TREE_CHAIN (fieldlist); - if (!x) - return; - do { - timeout--; - x = TREE_CHAIN (x); - } while (timeout > 0 && x); - - /* If there were "few" fields, avoid the overhead of allocating - a hash table. Instead just do the nested traversal thing. */ - if (timeout > 0) - { - for (x = TREE_CHAIN (fieldlist); x ; x = TREE_CHAIN (x)) - if (DECL_NAME (x)) - { - for (y = fieldlist; y != x; y = TREE_CHAIN (y)) - if (DECL_NAME (y) == DECL_NAME (x)) - { - if (objc_collecting_ivars) - { - error ("%Jduplicate member %qD", y, y); - DECL_NAME (y) = NULL_TREE; - } - else - { - error ("%Jduplicate member %qD", x, x); - DECL_NAME (x) = NULL_TREE; - } - } - } - } - else - { - htab_t htab = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); - void **slot; - - for (x = fieldlist; x ; x = TREE_CHAIN (x)) - if ((y = DECL_NAME (x)) != 0) - { - slot = htab_find_slot (htab, y, INSERT); - if (*slot) - { - if (objc_collecting_ivars) - { - tree z; - /* Hackery to get the correct position of the duplicate field. - It is slow, but we are reporting error, remember. */ - for (z = fieldlist; z ; z = TREE_CHAIN (z)) - if (DECL_NAME (x) == DECL_NAME (z)) - { - error ("%Jduplicate member %qD", z, z); - DECL_NAME (z) = NULL_TREE; - break; - } - } - else - { - error ("%Jduplicate member %qD", x, x); - DECL_NAME (x) = NULL_TREE; - } - } - *slot = y; - } - - htab_delete (htab); - } -} - -/* For current interface with inherited interface chain, this function returns the - flattened list of ivars in current and inherited interfaces. Otherwise, it - returns the argument passed to it. */ -tree -objc_get_interface_ivars (tree fieldlist) -{ - tree ivar_chain; - tree interface; - if (!objc_collecting_ivars || !objc_interface_context - || TREE_CODE (objc_interface_context) != CLASS_INTERFACE_TYPE - || CLASS_SUPER_NAME (objc_interface_context) == NULL_TREE) - return fieldlist; - interface = objc_interface_context; - gcc_assert (TOTAL_CLASS_RAW_IVARS (objc_interface_context) == NULL_TREE); - ivar_chain = copy_list (CLASS_RAW_IVARS (interface)); - if (CLASS_SUPER_NAME (interface)) - { - /* Prepend super-class ivars. */ - interface = lookup_interface (CLASS_SUPER_NAME (interface)); - /* Root base interface may not have its TOTAL_CLASS_RAW_IVARS set yet. */ - if (TOTAL_CLASS_RAW_IVARS (interface) == NULL_TREE) - TOTAL_CLASS_RAW_IVARS (interface) = copy_list (CLASS_RAW_IVARS (interface)); - ivar_chain = chainon (ivar_chain, TOTAL_CLASS_RAW_IVARS (interface)); - } - TOTAL_CLASS_RAW_IVARS (objc_interface_context) = ivar_chain; - return ivar_chain; -} -/* APPLE LOCAL end radar 4291785 */ - -/* Used by: build_private_template, continue_class, - and for @defs constructs. */ - -static tree -get_class_ivars (tree interface, bool inherited) -{ - tree ivar_chain = copy_list (CLASS_RAW_IVARS (interface)); - - /* Both CLASS_RAW_IVARS and CLASS_IVARS contain a list of ivars declared - by the current class (i.e., they do not include super-class ivars). - However, the CLASS_IVARS list will be side-effected by a call to - finish_struct(), which will fill in field offsets. */ - if (!CLASS_IVARS (interface)) - CLASS_IVARS (interface) = ivar_chain; - - if (!inherited) - return ivar_chain; - - while (CLASS_SUPER_NAME (interface)) - { - /* Prepend super-class ivars. */ - interface = lookup_interface (CLASS_SUPER_NAME (interface)); - ivar_chain = chainon (copy_list (CLASS_RAW_IVARS (interface)), - ivar_chain); - } - - return ivar_chain; -} - -static tree -objc_create_temporary_var (tree type) -{ - tree decl; - - decl = build_decl (VAR_DECL, NULL_TREE, type); - TREE_USED (decl) = 1; - DECL_ARTIFICIAL (decl) = 1; - DECL_IGNORED_P (decl) = 1; - DECL_CONTEXT (decl) = current_function_decl; - - return decl; -} - - -/* APPLE LOCAL begin radar 2848255 */ -static tree -create_weak_decl (tree type, const char *name) -{ - tree decl = create_global_decl (type, name); - DECL_WEAK (decl) = 1; - return decl; -} - -/* This routine builds objc2's typeinfo type for the purpose of zero-cost exception. - Declaration of this type is: - - struct _objc_ehtype_t { - void *_objc_ehtype_vtable; - const char *className; - struct class_t *const cls; - } -*/ - -static void -objc2_build_ehtype (void) -{ - tree field_decl, field_decl_chain; - objc2_ehtype_template = start_struct (RECORD_TYPE, - get_identifier ("_objc_ehtype_t")); - - /* void *_objc_ehtype_vtable; */ - field_decl = create_field_decl (ptr_type_node, "_objc_ehtype_vtable"); - field_decl_chain = field_decl; - - /* const char *className; */ - field_decl = create_field_decl (string_type_node, "className"); - chainon (field_decl_chain, field_decl); - - /* struct class_t *const cls; */ - field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), - "cls"); - chainon (field_decl_chain, field_decl); - finish_struct (objc2_ehtype_template, field_decl_chain, NULL_TREE); -} - -/* Declare objc_ehtype_vtable and OBJC_EHTYPE_id. */ -static -void init_UOBJC2_EHTYPE_decls (void) -{ - /* declare extern void *objc_ehtype_vtable */ - if (!UOBJC2_EHTYPE_VTABLE_decl) - { - UOBJC2_EHTYPE_VTABLE_decl = lookup_name (get_identifier ("objc_ehtype_vtable")); - if (!UOBJC2_EHTYPE_VTABLE_decl) - UOBJC2_EHTYPE_VTABLE_decl = create_extern_decl (ptr_type_node, - "objc_ehtype_vtable"); - } - /* declare extern struct _objc_ehtype_t OBJC_EHTYPE_id; */ - if (!UOBJC2_EHTYPE_id_decl) - { - UOBJC2_EHTYPE_id_decl = lookup_name (get_identifier ("OBJC_EHTYPE_id")); - if (!UOBJC2_EHTYPE_id_decl) - UOBJC2_EHTYPE_id_decl = create_extern_decl (objc2_ehtype_template, - "OBJC_EHTYPE_id"); - } - -} - -/* This routine builds initializer list for object of type struct _objc_ehtype_t. -*/ - -static tree -objc2_build_ehtype_initializer (tree name, tree cls) -{ - tree initlist = NULL_TREE; - tree addr; - init_UOBJC2_EHTYPE_decls (); - /* APPLE LOCAL begin radar 4995942 */ - /* _objc_ehtype_vtable + 2*sizeof(void*) */ - addr = - fold (build2 (MULT_EXPR, ptr_type_node, - TYPE_SIZE_UNIT (ptr_type_node), build_int_cst (NULL_TREE, 2))); - addr = fold (build2 (PLUS_EXPR, ptr_type_node, - build_fold_addr_expr (UOBJC2_EHTYPE_VTABLE_decl), addr)); - initlist = tree_cons (NULL_TREE, addr, initlist); - /* APPLE LOCAL end radar 4995942 */ - - /* className */ - initlist = tree_cons (NULL_TREE, name, initlist); - - /* cls */ - initlist = tree_cons (NULL_TREE, cls, initlist); - - return objc_build_constructor (objc2_ehtype_template, nreverse (initlist)); -} - -static char* -objc2_internal_ehtype_name (tree cls_name_ident) -{ - static char string[BUFSIZE]; - sprintf (string, "%s_%s", STRING_V2_OBJC_EHTYPE_PREFIX, IDENTIFIER_POINTER (cls_name_ident)); - return string; -} - -/* This routine declares objective-c's 'typeinfo' data structure. */ - -static tree -/* APPLE LOCAL radar 5008110 */ -objc2_build_ehtype_var_decl (tree cls_name_ident, bool extern_decl, bool weak_decl) -{ - tree initlist, ehtype_vdecl; - tree name_expr, class_name_expr; - - const char* string = objc2_internal_ehtype_name (cls_name_ident); - /* APPLE LOCAL begin radar 5008110 */ - if (extern_decl) - return create_extern_decl (objc2_ehtype_template, string); - name_expr = add_objc_string (cls_name_ident, class_names); - class_name_expr = create_extern_decl (objc_v2_class_template, - objc_build_internal_classname (cls_name_ident, false)); - class_name_expr = build_fold_addr_expr (class_name_expr); - ehtype_vdecl = weak_decl ? create_weak_decl (objc2_ehtype_template, string) - : create_global_decl (objc2_ehtype_template, string); - /* APPLE LOCAL end radar 5008110 */ - initlist = objc2_build_ehtype_initializer (name_expr, class_name_expr); - finish_var_decl (ehtype_vdecl, initlist); - return ehtype_vdecl; -} - -#ifdef OBJCPLUS -/* This routine returns true if TYPE is a valid objective-c type which can be - used in a @catch clause */ -bool -objc2_valid_objc_catch_type (tree type) -{ - return flag_objc_zerocost_exceptions && managed_objc_object_pointer (type); -} -#endif - -/* APPLE LOCAL begin radar 5008110 */ -/* This routine returns TRUE if CLS or any of its super classes have their - __objc_exception__ atttribute set. -*/ -static bool -objc2_objc_exception_attr (tree cls) -{ - tree chain; - while (cls) - { - for (chain = CLASS_ATTRIBUTES (cls); chain; chain = TREE_CHAIN (chain)) - if (is_attribute_p ("objc_exception", TREE_PURPOSE (chain))) - return true; - cls = lookup_interface (CLASS_SUPER_NAME (cls)); - } - - return false; -} - -/* APPLE LOCAL end radar 5008110 */ - -/* This hook, called via lang_eh_runtime_type, generates a runtime object - which is either the address of the 'OBJC_EHTYPE_$_class' object or - address of external OBJC_EHTYPE_id object. -*/ -static tree -objc2_eh_runtime_type (tree type) -{ - tree t; - if (type == error_mark_node) - return type; - if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) - return build_fold_addr_expr (UOBJC2_EHTYPE_id_decl); - if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type))) - { -#ifdef OBJCPLUS - /* This routine is also called for c++'s catch clause; in which case, - we use c++'s typeinfo decl. */ - return objcp_build_eh_type_type (type); -#else - error ("non-objective-c type '%T' cannot be caught", type); - return error_mark_node; -#endif - } - - t = OBJC_TYPE_NAME (TREE_TYPE (type)); - /* APPLE LOCAL begin radar 5008110 */ - t = objc2_build_ehtype_var_decl (t, - objc2_objc_exception_attr (lookup_interface (t)), true); - /* APPLE LOCAL end radar 5008110 */ - return build_fold_addr_expr (t); -} - -/* APPLE LOCAL begin radar 4951324 */ -/* This routine declares an external class object to be used by - objc2_build_ehtype_var_decl routine. */ -static void -objc2_build_extern_decl_catch_object (tree type) -{ - if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) - return; - - if (POINTER_TYPE_P (type) && TYPED_OBJECT (TREE_TYPE (type))) - { - tree t = OBJC_TYPE_NAME (TREE_TYPE (type)); - (void)add_objc_string (t, class_names); - (void) create_extern_decl (objc_v2_class_template, - objc_build_internal_classname (t, false)); - if (objc2_objc_exception_attr (lookup_interface (t))) - (void) create_extern_decl (objc2_ehtype_template, objc2_internal_ehtype_name (t)); - } -} -/* APPLE LOCAL end radar 4951324 */ -/* APPLE LOCAL end radar 2848255 */ - -/* Exception handling constructs. We begin by having the parser do most - of the work and passing us blocks. What we do next depends on whether - we're doing "native" exception handling or legacy Darwin setjmp exceptions. - We abstract all of this in a handful of appropriately named routines. */ - -/* Stack of open try blocks. */ - -struct objc_try_context -{ - struct objc_try_context *outer; - - /* Statements (or statement lists) as processed by the parser. */ - tree try_body; - tree finally_body; - - /* Some file position locations. */ - location_t try_locus; - location_t end_try_locus; - location_t end_catch_locus; - location_t finally_locus; - location_t end_finally_locus; - - /* A STATEMENT_LIST of CATCH_EXPRs, appropriate for sticking into op1 - of a TRY_CATCH_EXPR. Even when doing Darwin setjmp. */ - tree catch_list; - - /* The CATCH_EXPR of an open @catch clause. */ - tree current_catch; - - /* The VAR_DECL holding the Darwin equivalent of EXC_PTR_EXPR. */ - tree caught_decl; - tree stack_decl; - tree rethrow_decl; -}; - -static struct objc_try_context *cur_try_context; - -/* This hook, called via lang_eh_runtime_type, generates a runtime object - that represents TYPE. For Objective-C, this is just the class name. */ -/* ??? Isn't there a class object or some such? Is it easy to get? */ - -#ifndef OBJCPLUS -static tree -objc_eh_runtime_type (tree type) -{ - return add_objc_string (OBJC_TYPE_NAME (TREE_TYPE (type)), class_names); -} -#endif - -/* Initialize exception handling. */ - -static void -objc_init_exceptions (void) -{ - static bool done = false; - if (done) - return; - done = true; - - /* APPLE LOCAL begin radar 4590191 */ - if (flag_objc_sjlj_exceptions) - { - if (darwin_macosx_version_min - && strverscmp (darwin_macosx_version_min, "10.3") < 0) - warning (0, "Mac OS X version 10.3 or later is needed instead of %s for objc/obj-c++ exceptions", - darwin_macosx_version_min); - } - /* APPLE LOCAL end radar 4590191 */ - /* APPLE LOCAL begin radar 2848255 */ - else if (flag_objc_zerocost_exceptions) - { -#ifndef OBJCPLUS - c_eh_initialized_p = true; -#endif - /* APPPLE LOCAL radar 5023725 */ - OBJC_FLAG_ZEROCOST_EXCEPTIONS; - eh_personality_libfunc - = init_one_libfunc ("__objc_personality_v0"); - default_init_unwind_resume_libfunc (); - using_eh_for_cleanups (); - lang_eh_runtime_type = objc2_eh_runtime_type; - /* APPLE LOCAL radar 4951324 */ - init_UOBJC2_EHTYPE_decls (); - } - /* APPLE LOCAL end radar 2848255 */ -#ifndef OBJCPLUS - else - { - c_eh_initialized_p = true; - eh_personality_libfunc - = init_one_libfunc (USING_SJLJ_EXCEPTIONS - ? "__gnu_objc_personality_sj0" - : "__gnu_objc_personality_v0"); - default_init_unwind_resume_libfunc (); - using_eh_for_cleanups (); - lang_eh_runtime_type = objc_eh_runtime_type; - } -#endif -} - -/* Build an EXC_PTR_EXPR, or the moral equivalent. In the case of Darwin, - we'll arrange for it to be initialized (and associated with a binding) - later. */ - -static tree -objc_build_exc_ptr (void) -{ - if (flag_objc_sjlj_exceptions) - { - tree var = cur_try_context->caught_decl; - if (!var) - { - var = objc_create_temporary_var (objc_object_type); - cur_try_context->caught_decl = var; - } - return var; - } - else - return build0 (EXC_PTR_EXPR, objc_object_type); -} - -/* Build "objc_exception_try_exit(&_stack)". */ - -static tree -next_sjlj_build_try_exit (void) -{ - tree t; - t = build_fold_addr_expr (cur_try_context->stack_decl); - t = tree_cons (NULL, t, NULL); - t = build_function_call (objc_exception_try_exit_decl, t); - return t; -} - -/* Build - objc_exception_try_enter (&_stack); - if (_setjmp(&_stack.buf)) - ; - else - ; - Return the COND_EXPR. Note that the THEN and ELSE fields are left - empty, ready for the caller to fill them in. */ - -static tree -next_sjlj_build_enter_and_setjmp (void) -{ - tree t, enter, sj, cond; - - t = build_fold_addr_expr (cur_try_context->stack_decl); - t = tree_cons (NULL, t, NULL); - enter = build_function_call (objc_exception_try_enter_decl, t); - - t = objc_build_component_ref (cur_try_context->stack_decl, - get_identifier ("buf")); - t = build_fold_addr_expr (t); -#ifdef OBJCPLUS - /* Convert _setjmp argument to type that is expected. */ - if (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))) - t = convert (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))), t); - else - t = convert (ptr_type_node, t); -#else - t = convert (ptr_type_node, t); -#endif - t = tree_cons (NULL, t, NULL); - sj = build_function_call (objc_setjmp_decl, t); - - cond = build2 (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj); - cond = c_common_truthvalue_conversion (cond); - - return build3 (COND_EXPR, void_type_node, cond, NULL, NULL); -} - -/* Build: - - DECL = objc_exception_extract(&_stack); */ - -static tree -next_sjlj_build_exc_extract (tree decl) -{ - tree t; - - t = build_fold_addr_expr (cur_try_context->stack_decl); - t = tree_cons (NULL, t, NULL); - t = build_function_call (objc_exception_extract_decl, t); - t = convert (TREE_TYPE (decl), t); - t = build2 (MODIFY_EXPR, void_type_node, decl, t); - - return t; -} - -/* Build - if (objc_exception_match(obj_get_class(TYPE), _caught) - BODY - else if (...) - ... - else - { - _rethrow = _caught; - objc_exception_try_exit(&_stack); - } - from the sequence of CATCH_EXPRs in the current try context. */ - -static tree -next_sjlj_build_catch_list (void) -{ - tree_stmt_iterator i = tsi_start (cur_try_context->catch_list); - tree catch_seq, t; - tree *last = &catch_seq; - bool saw_id = false; - - for (; !tsi_end_p (i); tsi_next (&i)) - { - tree stmt = tsi_stmt (i); - tree type = CATCH_TYPES (stmt); - tree body = CATCH_BODY (stmt); - - if (type == NULL) - { - *last = body; - saw_id = true; - break; - } - else - { - tree args, cond; - - if (type == error_mark_node) - cond = error_mark_node; - else - { - args = tree_cons (NULL, cur_try_context->caught_decl, NULL); - t = objc_get_class_reference (OBJC_TYPE_NAME (TREE_TYPE (type))); - args = tree_cons (NULL, t, args); - t = build_function_call (objc_exception_match_decl, args); - cond = c_common_truthvalue_conversion (t); - } - t = build3 (COND_EXPR, void_type_node, cond, body, NULL); - SET_EXPR_LOCUS (t, EXPR_LOCUS (stmt)); - - *last = t; - last = &COND_EXPR_ELSE (t); - } - } - - if (!saw_id) - { - t = build2 (MODIFY_EXPR, void_type_node, cur_try_context->rethrow_decl, - cur_try_context->caught_decl); - SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus); - append_to_statement_list (t, last); - - t = next_sjlj_build_try_exit (); - SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus); - append_to_statement_list (t, last); - } - - return catch_seq; -} - -/* Build a complete @try-@catch-@finally block for legacy Darwin setjmp - exception handling. We aim to build: - - { - struct _objc_exception_data _stack; - id _rethrow = 0; - try - { - objc_exception_try_enter (&_stack); - if (_setjmp(&_stack.buf)) - { - id _caught = objc_exception_extract(&_stack); - objc_exception_try_enter (&_stack); - if (_setjmp(&_stack.buf)) - _rethrow = objc_exception_extract(&_stack); - else - CATCH-LIST - } - else - TRY-BLOCK - } - finally - { - if (!_rethrow) - objc_exception_try_exit(&_stack); - FINALLY-BLOCK - if (_rethrow) - objc_exception_throw(_rethrow); - } - } - - If CATCH-LIST is empty, we can omit all of the block containing - "_caught" except for the setting of _rethrow. Note the use of - a real TRY_FINALLY_EXPR here, which is not involved in EH per-se, - but handles goto and other exits from the block. */ - -static tree -next_sjlj_build_try_catch_finally (void) -{ - tree rethrow_decl, stack_decl, t; - tree catch_seq, try_fin, bind; - - /* Create the declarations involved. */ - t = xref_tag (RECORD_TYPE, get_identifier (UTAG_EXCDATA)); - stack_decl = objc_create_temporary_var (t); - cur_try_context->stack_decl = stack_decl; - - rethrow_decl = objc_create_temporary_var (objc_object_type); - cur_try_context->rethrow_decl = rethrow_decl; - TREE_CHAIN (rethrow_decl) = stack_decl; - - /* Build the outermost variable binding level. */ - bind = build3 (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL); - SET_EXPR_LOCATION (bind, cur_try_context->try_locus); - TREE_SIDE_EFFECTS (bind) = 1; - - /* Initialize rethrow_decl. */ - t = build2 (MODIFY_EXPR, void_type_node, rethrow_decl, - convert (objc_object_type, null_pointer_node)); - SET_EXPR_LOCATION (t, cur_try_context->try_locus); - append_to_statement_list (t, &BIND_EXPR_BODY (bind)); - - /* Build the outermost TRY_FINALLY_EXPR. */ - try_fin = build2 (TRY_FINALLY_EXPR, void_type_node, NULL, NULL); - SET_EXPR_LOCATION (try_fin, cur_try_context->try_locus); - TREE_SIDE_EFFECTS (try_fin) = 1; - append_to_statement_list (try_fin, &BIND_EXPR_BODY (bind)); - - /* Create the complete catch sequence. */ - if (cur_try_context->catch_list) - { - tree caught_decl = objc_build_exc_ptr (); - catch_seq = build_stmt (BIND_EXPR, caught_decl, NULL, NULL); - TREE_SIDE_EFFECTS (catch_seq) = 1; - - t = next_sjlj_build_exc_extract (caught_decl); - append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq)); - - t = next_sjlj_build_enter_and_setjmp (); - COND_EXPR_THEN (t) = next_sjlj_build_exc_extract (rethrow_decl); - COND_EXPR_ELSE (t) = next_sjlj_build_catch_list (); - append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq)); - } - else - catch_seq = next_sjlj_build_exc_extract (rethrow_decl); - SET_EXPR_LOCATION (catch_seq, cur_try_context->end_try_locus); - - /* Build the main register-and-try if statement. */ - t = next_sjlj_build_enter_and_setjmp (); - SET_EXPR_LOCATION (t, cur_try_context->try_locus); - COND_EXPR_THEN (t) = catch_seq; - COND_EXPR_ELSE (t) = cur_try_context->try_body; - TREE_OPERAND (try_fin, 0) = t; - - /* Build the complete FINALLY statement list. */ - t = next_sjlj_build_try_exit (); - t = build_stmt (COND_EXPR, - c_common_truthvalue_conversion (rethrow_decl), - NULL, t); - SET_EXPR_LOCATION (t, cur_try_context->finally_locus); - append_to_statement_list (t, &TREE_OPERAND (try_fin, 1)); - - append_to_statement_list (cur_try_context->finally_body, - &TREE_OPERAND (try_fin, 1)); - - t = tree_cons (NULL, rethrow_decl, NULL); - t = build_function_call (objc_exception_throw_decl, t); - t = build_stmt (COND_EXPR, - c_common_truthvalue_conversion (rethrow_decl), - t, NULL); - SET_EXPR_LOCATION (t, cur_try_context->end_finally_locus); - append_to_statement_list (t, &TREE_OPERAND (try_fin, 1)); - - return bind; -} - -/* Called just after parsing the @try and its associated BODY. We now - must prepare for the tricky bits -- handling the catches and finally. */ - -void -objc_begin_try_stmt (location_t try_locus, tree body) -{ - struct objc_try_context *c = xcalloc (1, sizeof (*c)); - c->outer = cur_try_context; - c->try_body = body; - c->try_locus = try_locus; - c->end_try_locus = input_location; - cur_try_context = c; - - objc_init_exceptions (); - - if (flag_objc_sjlj_exceptions) - objc_mark_locals_volatile (NULL); -} - -/* Called just after parsing "@catch (parm)". Open a binding level, - enter DECL into the binding level, and initialize it. Leave the - binding level open while the body of the compound statement is parsed. */ - -void -objc_begin_catch_clause (tree decl) -{ - tree compound, type, t; - - /* Begin a new scope that the entire catch clause will live in. */ - compound = c_begin_compound_stmt (true); - - /* APPLE LOCAL begin radar 2848255 */ - if (decl == NULL_TREE) - { - /* @catch (...) */ - if (flag_objc_zerocost_exceptions) - { - t = build_stmt (CATCH_EXPR, NULL_TREE, compound); - cur_try_context->current_catch = t; - /* APPLE LOCAL 5837617 */ - t = build1(NOP_EXPR, ptr_type_node, objc_build_exc_ptr ()); - t = build_function_call (objc2_begin_catch_decl, - tree_cons (NULL_TREE, t, NULL_TREE)); - add_stmt (t); - return; - } - else - /* APPLE LOCAL begin radar 4995967 */ - /* Assumes @catch (...) is same as @catch (id). */ - decl = create_tmp_var_raw (objc_object_type, NULL); - /* APPLE LOCAL end radar 4995967 */ - } - /* APPLE LOCAL end radar 2848255 */ - - /* The parser passed in a PARM_DECL, but what we really want is a VAR_DECL. */ - decl = build_decl (VAR_DECL, DECL_NAME (decl), TREE_TYPE (decl)); - lang_hooks.decls.pushdecl (decl); - - /* Since a decl is required here by syntax, don't warn if its unused. */ - /* ??? As opposed to __attribute__((unused))? Anyway, this appears to - be what the previous objc implementation did. */ - TREE_USED (decl) = 1; - - /* Verify that the type of the catch is valid. It must be a pointer - to an Objective-C class, or "id" (which is catch-all). */ - type = TREE_TYPE (decl); - - if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) - /* APPLE LOCAL radar 2848255 */ - type = !flag_objc_zerocost_exceptions ? NULL : type; - else if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type))) - { - error ("@catch parameter is not a known Objective-C class type"); - type = error_mark_node; - } - else if (cur_try_context->catch_list) - { - /* Examine previous @catch clauses and see if we've already - caught the type in question. */ - tree_stmt_iterator i = tsi_start (cur_try_context->catch_list); - for (; !tsi_end_p (i); tsi_next (&i)) - { - tree stmt = tsi_stmt (i); - t = CATCH_TYPES (stmt); - if (t == error_mark_node) - continue; - if (!t || DERIVED_FROM_P (TREE_TYPE (t), TREE_TYPE (type))) - { - warning (0, "exception of type %<%T%> will be caught", - TREE_TYPE (type)); - warning (0, "%H by earlier handler for %<%T%>", - EXPR_LOCUS (stmt), TREE_TYPE (t ? t : objc_object_type)); - break; - } - } - } - - /* Record the data for the catch in the try context so that we can - finalize it later. */ - t = build_stmt (CATCH_EXPR, type, compound); - cur_try_context->current_catch = t; - - /* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */ - t = objc_build_exc_ptr (); - t = convert (TREE_TYPE (decl), t); - /* APPLE LOCAL begin radar 2848255 - radar 4951324 */ - if (flag_objc_zerocost_exceptions) - { - /* Decl an external declaration for the objc class for this catch type. */ - objc2_build_extern_decl_catch_object (type); - /* APPLE LOCAL 5837617 */ - t = build1(NOP_EXPR, ptr_type_node, t); - t = build_function_call (objc2_begin_catch_decl, - tree_cons (NULL_TREE, t, NULL_TREE)); - } - /* APPLE LOCAL end radar 2848255 - radar 4951324 */ - t = build2 (MODIFY_EXPR, void_type_node, decl, t); - add_stmt (t); -} - -/* APPLE LOCAL begin radar 2848255 */ -/* This routine adds a finally { objc_end_catch (); } block to end of try-block. */ -static tree -objc2_liteweight_finish_try_stmt (void) -{ - struct objc_try_context *c = cur_try_context; - tree stmt, t; - - stmt = c->try_body; - t = build_function_call (objc2_end_catch_decl, NULL_TREE); - append_to_statement_list (t, &c->finally_body); - stmt = build_stmt (TRY_FINALLY_EXPR, stmt, c->finally_body); - SET_EXPR_LOCATION (stmt, c->try_locus); - - cur_try_context = c->outer; - free (c); - return stmt; -} -/* APPLE LOCAL end radar 2848255 */ - -/* Called just after parsing the closing brace of a @catch clause. Close - the open binding level, and record a CATCH_EXPR for it. */ - -void -objc_finish_catch_clause (void) -{ - tree c = cur_try_context->current_catch; - cur_try_context->current_catch = NULL; - cur_try_context->end_catch_locus = input_location; - - CATCH_BODY (c) = c_end_compound_stmt (CATCH_BODY (c), 1); - /* APPLE LOCAL begin radar 2848255 */ - if (flag_objc_zerocost_exceptions) - { - /* try { catch-body } finally { objc_end_catch (); } */ - tree try_exp, t; - t = CATCH_BODY (c); - if (TREE_CODE (t) == BIND_EXPR) - { - /* more common case of @catch (objc-expr). */ - objc_begin_try_stmt (cur_try_context->try_locus, BIND_EXPR_BODY (t)); - try_exp = objc2_liteweight_finish_try_stmt (); - BIND_EXPR_BODY (t) = NULL_TREE; - append_to_statement_list (try_exp, &BIND_EXPR_BODY (t)); - } - else - { - /* case of the new @catch (...) */ - objc_begin_try_stmt (cur_try_context->try_locus, t); - try_exp = objc2_liteweight_finish_try_stmt (); - CATCH_BODY (c) = NULL_TREE; - append_to_statement_list (try_exp, &CATCH_BODY (c)); - } - } - /* APPLE LOCAL end radar 2848255 */ - append_to_statement_list (c, &cur_try_context->catch_list); -} - -/* Called after parsing a @finally clause and its associated BODY. - Record the body for later placement. */ - -void -objc_build_finally_clause (location_t finally_locus, tree body) -{ - cur_try_context->finally_body = body; - cur_try_context->finally_locus = finally_locus; - cur_try_context->end_finally_locus = input_location; -} - -/* Called to finalize a @try construct. */ - -tree -objc_finish_try_stmt (void) -{ - struct objc_try_context *c = cur_try_context; - tree stmt; - - if (c->catch_list == NULL && c->finally_body == NULL) - error ("%<@try%> without %<@catch%> or %<@finally%>"); - - /* If we're doing Darwin setjmp exceptions, build the big nasty. */ - if (flag_objc_sjlj_exceptions) - { - if (!cur_try_context->finally_body) - { - cur_try_context->finally_locus = input_location; - cur_try_context->end_finally_locus = input_location; - } - stmt = next_sjlj_build_try_catch_finally (); - } - else - { - /* Otherwise, nest the CATCH inside a FINALLY. */ - stmt = c->try_body; - if (c->catch_list) - { - stmt = build_stmt (TRY_CATCH_EXPR, stmt, c->catch_list); - SET_EXPR_LOCATION (stmt, cur_try_context->try_locus); - } - if (c->finally_body) - { - stmt = build_stmt (TRY_FINALLY_EXPR, stmt, c->finally_body); - SET_EXPR_LOCATION (stmt, cur_try_context->try_locus); - } - } - add_stmt (stmt); - - cur_try_context = c->outer; - free (c); - return stmt; -} - -/* APPLE LOCAL begin radar 2848255 */ -tree -objc2_build_throw_call (tree throw_expr) -{ - tree args; - - objc_init_exceptions (); - - if (throw_expr == NULL) - { - /* If we're not inside a @catch block, there is no "current - exception" to be rethrown. */ - if (cur_try_context == NULL - || cur_try_context->current_catch == NULL) - { - error ("%<@throw%> (rethrow) used outside of a @catch block"); - return error_mark_node; - } - /* APPLE LOCAL begin radar 4957534 */ - if (flag_objc_zerocost_exceptions) - return build_function_call (objc_rethrow_exception_decl, NULL_TREE); - /* APPLE LOCAL end radar 4957534 */ - /* Otherwise the object is still sitting in the EXC_PTR_EXPR - value that we get from the runtime. */ - throw_expr = objc_build_exc_ptr (); - } - - /* A throw is just a call to the runtime throw function with the - object as a parameter. */ - args = tree_cons (NULL, throw_expr, NULL); - return build_function_call (objc_exception_throw_decl, args); -} - -tree objc_build_throw_stmt (tree throw_expr) -{ - return add_stmt (objc2_build_throw_call (throw_expr)); -} -/* APPLE LOCAL end radar 2848255 */ - -tree -objc_build_synchronized (location_t start_locus, tree mutex, tree body) -{ - tree args, call; - - /* First lock the mutex. */ - mutex = save_expr (mutex); - args = tree_cons (NULL, mutex, NULL); - call = build_function_call (objc_sync_enter_decl, args); - SET_EXPR_LOCATION (call, start_locus); - add_stmt (call); - - /* Build the mutex unlock. */ - args = tree_cons (NULL, mutex, NULL); - call = build_function_call (objc_sync_exit_decl, args); - SET_EXPR_LOCATION (call, input_location); - - /* Put the that and the body in a TRY_FINALLY. */ - objc_begin_try_stmt (start_locus, body); - objc_build_finally_clause (input_location, call); - return objc_finish_try_stmt (); -} - - -/* Predefine the following data type: - - struct _objc_exception_data - { - int buf[OBJC_JBLEN]; - void *pointers[4]; - }; */ - -/* The following yuckiness should prevent users from having to #include - <setjmp.h> in their code... */ - -/* Define to a harmless positive value so the below code doesn't die. */ -#ifndef OBJC_JBLEN -#define OBJC_JBLEN 18 -#endif - -static void -build_next_objc_exception_stuff (void) -{ - tree field_decl, field_decl_chain, index, temp_type; - - objc_exception_data_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_EXCDATA)); - - /* int buf[OBJC_JBLEN]; */ - - index = build_index_type (build_int_cst (NULL_TREE, OBJC_JBLEN - 1)); - field_decl = create_field_decl (build_array_type (integer_type_node, index), - "buf"); - field_decl_chain = field_decl; - - /* void *pointers[4]; */ - - index = build_index_type (build_int_cst (NULL_TREE, 4 - 1)); - field_decl = create_field_decl (build_array_type (ptr_type_node, index), - "pointers"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_exception_data_template, field_decl_chain, NULL_TREE); - - /* int _setjmp(...); */ - /* If the user includes <setjmp.h>, this shall be superseded by - 'int _setjmp(jmp_buf);' */ - temp_type = build_function_type (integer_type_node, NULL_TREE); - objc_setjmp_decl - = builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - - /* id objc_exception_extract(struct _objc_exception_data *); */ - temp_type - = build_function_type (objc_object_type, - tree_cons (NULL_TREE, - build_pointer_type (objc_exception_data_template), - OBJC_VOID_AT_END)); - objc_exception_extract_decl - = builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - /* void objc_exception_try_enter(struct _objc_exception_data *); */ - /* void objc_exception_try_exit(struct _objc_exception_data *); */ - temp_type - = build_function_type (void_type_node, - tree_cons (NULL_TREE, - build_pointer_type (objc_exception_data_template), - OBJC_VOID_AT_END)); - objc_exception_try_enter_decl - = builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - objc_exception_try_exit_decl - = builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - - /* int objc_exception_match(id, id); */ - temp_type - = build_function_type (integer_type_node, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - OBJC_VOID_AT_END))); - objc_exception_match_decl - = builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - - /* APPLE LOCAL objc gc 5656857 */ - /* id objc_assign_ivar (id, id, ptrdiff_t); */ - /* APPLE LOCAL objc gc 5656857 */ - /* id objc_assign_ivar_Fast (id, id, ptrdiff_t) - __attribute__ ((hard_coded_address (OFFS_ASSIGNIVAR_FAST))); */ - temp_type - = build_function_type (objc_object_type, - tree_cons - (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, - /* APPLE LOCAL objc gc 5656857 */ - ptrdiff_type_node, - OBJC_VOID_AT_END)))); - /* APPLE LOCAL begin radar 4590221 */ - if (OFFS_ASSIGNIVAR_FAST) - { - objc_assign_ivar_decl - = builtin_function (TAG_ASSIGNIVAR_FAST, temp_type, 0, - NOT_BUILT_IN, NULL, NULL_TREE); - DECL_ATTRIBUTES (objc_assign_ivar_decl) - = tree_cons (get_identifier ("hard_coded_address"), - build_int_cst (NULL_TREE, OFFS_ASSIGNIVAR_FAST), - NULL_TREE); - } - else - { - objc_assign_ivar_decl - = builtin_function (TAG_ASSIGNIVAR, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - } - /* APPLE LOCAL end radar 4590221 */ - /* id objc_assign_global (id, id *); */ - /* id objc_assign_strongCast (id, id *); */ - temp_type = build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, build_pointer_type (objc_object_type), - OBJC_VOID_AT_END))); - objc_assign_global_decl - = builtin_function (TAG_ASSIGNGLOBAL, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - objc_assign_strong_cast_decl - = builtin_function (TAG_ASSIGNSTRONGCAST, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - /* APPLE LOCAL begin radar 4426814 */ - /* id objc_assign_weak (id, id *); */ - objc_assign_weak_decl - = builtin_function (TAG_ASSIGN_WEAK, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - /* APPLE LOCAL radar 4591756 */ - /* id objc_read_weak (id *); */ - temp_type = build_function_type (objc_object_type, - tree_cons (NULL_TREE, - build_pointer_type (objc_object_type), - OBJC_VOID_AT_END)); - /* APPLE LOCAL radar 4591756 */ - objc_read_weak_decl - = builtin_function (TAG_READ_WEAK, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); - /* APPLE LOCAL end radar 4426814 */ - /* APPLE LOCAL begin radar 3742561 */ - /* void *objc_memmove_collectable(void *dst, const void *src, size_t size) */ - temp_type = build_function_type (ptr_type_node, - tree_cons (NULL_TREE, ptr_type_node, - tree_cons (NULL_TREE, ptr_type_node, - tree_cons (NULL_TREE, long_unsigned_type_node, - OBJC_VOID_AT_END)))); - objc_memmove_collectable_decl - = builtin_function (TAG_MEMMOVE_COLLECTABLE, temp_type, 0, - NOT_BUILT_IN, NULL, NULL_TREE); - /* APPLE LOCAL end radar 3742561 */ -} - -static void -build_objc_exception_stuff (void) -{ - tree noreturn_list, nothrow_list, temp_type; - - noreturn_list = tree_cons (get_identifier ("noreturn"), NULL, NULL); - nothrow_list = tree_cons (get_identifier ("nothrow"), NULL, NULL); - - /* void objc_exception_throw(id) __attribute__((noreturn)); */ - /* void objc_sync_enter(id); */ - /* void objc_sync_exit(id); */ - temp_type = build_function_type (void_type_node, - tree_cons (NULL_TREE, objc_object_type, - OBJC_VOID_AT_END)); - objc_exception_throw_decl - = builtin_function (TAG_EXCEPTIONTHROW, temp_type, 0, NOT_BUILT_IN, NULL, - noreturn_list); - objc_sync_enter_decl - = builtin_function (TAG_SYNCENTER, temp_type, 0, NOT_BUILT_IN, - NULL, nothrow_list); - objc_sync_exit_decl - = builtin_function (TAG_SYNCEXIT, temp_type, 0, NOT_BUILT_IN, - NULL, nothrow_list); - /* APPLE LOCAL begin radar 2848255 */ - if (flag_objc_zerocost_exceptions) - { - /* void * objc_begin_catch (void *) */ - tree type - = build_function_type (ptr_type_node, - tree_cons (NULL_TREE, ptr_type_node, - OBJC_VOID_AT_END)); - objc2_begin_catch_decl = builtin_function ("objc_begin_catch", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (objc2_begin_catch_decl) = 0; - - /* void objc_end_catch () */ - type - = build_function_type (void_type_node, OBJC_VOID_AT_END); - objc2_end_catch_decl = builtin_function ("objc_end_catch", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (objc2_end_catch_decl) = 0; - - /* APPLE LOCAL begin radar 4957534 */ - /* void objc_exception_rethrow (void) */ - type - = build_function_type (void_type_node, OBJC_VOID_AT_END); - objc_rethrow_exception_decl = builtin_function ("objc_exception_rethrow", - type, 0, NOT_BUILT_IN, - NULL, NULL_TREE); - TREE_NOTHROW (objc_rethrow_exception_decl) = 0; - /* APPLE LOCAL end radar 4957534 */ - - /* APPLE LOCAL begin radar 5060975 */ - /* Make sure that objc_exception_throw (id) claims that it may throw an exception. */ - TREE_NOTHROW (objc_exception_throw_decl) = 0; - /* APPLE LOCAL end radar 5060975 */ - - /* build struct _objc_ehtype_t type */ - objc2_build_ehtype (); - } - /* APPLE LOCAL end radar 2848255 */ -} - -/* Construct a C struct corresponding to ObjC class CLASS, with the same - name as the class: - - struct <classname> { - struct _objc_class *isa; - ... - }; */ - -static void -build_private_template (tree class) -{ - if (!CLASS_STATIC_TEMPLATE (class)) - { - tree record = objc_build_struct (class, - get_class_ivars (class, false), - CLASS_SUPER_NAME (class)); - - /* Set the TREE_USED bit for this struct, so that stab generator - can emit stabs for this struct type. */ - /* APPLE LOCAL begin radar 4666559 */ - if (flag_debug_only_used_symbols && !objc_collecting_ivars - && TYPE_STUB_DECL (record)) - /* APPLE LOCAL end radar 4666559 */ - TREE_USED (TYPE_STUB_DECL (record)) = 1; - - /* APPLE LOCAL begin radar 4548636 */ - if (TREE_CODE (class) == CLASS_INTERFACE_TYPE) - objc_attach_attrs_to_type (record, class); - /* APPLE LOCAL end radar 4548636 */ - /* APPLE LOCAL begin ObjC new abi */ - if (flag_objc_abi == 2) - CLASS_TYPE (class) = record; - } -} - /* APPLE LOCAL end ObjC new abi */ - -/* APPLE LOCAL begin ObjC new abi */ -/* struct protocol_t { - // APPLE LOCAL radar 4695109 - id isa; // NULL - const char * const protocol_name; - const struct protocol_list_t * const protocol_list; - const struct method_list_t * const instance_methods; - const struct method_list_t * const class_methods; - // APPLE LOCAL begin radar 4695109 - const struct method_list_t *optionalInstanceMethods; - const struct method_list_t *optionalClassMethods; - // APPLE LOCAL end radar 4695109 - const struct _prop_list_t * const properties; - // APPLE LOCAL begin radar 5192466 - const uint32_t size; // sizeof(struct protocol_t) - const uint32_t flags; // = 0 - // APPLE LOCAL end radar 5192466 - } */ - -static void -build_v2_protocol_template (void) -{ - tree field_decl, field_decl_chain; - - objc_v2_protocol_template = start_struct (RECORD_TYPE, - get_identifier (UTAG_V2_PROTOCOL)); - - /* APPLE LOCAL begin radar 4533974 - ObjC new protocol - radar 4695109 */ - /* id isa; */ - field_decl = create_field_decl (objc_object_type, "isa"); - field_decl_chain = field_decl; - /* APPLE LOCAL end radar 4533974 - ObjC new protocol - radar 4695109 */ - - /* char *protocol_name; */ - field_decl = create_field_decl (string_type_node, "protocol_name"); - /* APPLE LOCAL radar 4533974 - ObjC new protocol */ - chainon (field_decl_chain, field_decl); - - /* const struct protocol_list_t * const protocol_list; */ - field_decl = create_field_decl (build_pointer_type - (objc_v2_protocol_template), - "protocol_list"); - chainon (field_decl_chain, field_decl); - - /* const struct method_list_t * const instance_methods; */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "instance_methods"); - chainon (field_decl_chain, field_decl); - - /* const struct method_list_t * const class_methods; */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "class_methods"); - chainon (field_decl_chain, field_decl); - - /* APPLE LOCAL begin radar 4695109 */ - /* const struct method_list_t * optionalInstanceMethods */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "optionalInstanceMethods"); - chainon (field_decl_chain, field_decl); - - /* const struct method_list_t * optionalClassMethods */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "optionalClassMethods"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end radar 4695109 */ - - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - /* struct _prop_list_t * properties; */ - field_decl = create_field_decl (objc_prop_list_ptr, - "properties"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - /* APPLE LOCAL begin radar 5192466 */ - /* const uint32_t size; */ - field_decl = create_field_decl (integer_type_node, "size"); - chainon (field_decl_chain, field_decl); - /* const uint32_t flags; */ - field_decl = create_field_decl (integer_type_node, "flags"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end radar 5192466 */ - - finish_struct (objc_v2_protocol_template, field_decl_chain, NULL_TREE); - - -} - -/* This routine declares all variables used to declare protocol references. */ - -static void -/* APPLE LOCAL radar 4695109 */ -/* Any reference to protocol_impl is removed */ -generate_v2_protocol_references (tree plist) -{ - tree lproto; - - /* Forward declare protocols referenced. */ - for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) - { - tree proto = TREE_VALUE (lproto); - - if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_NAME (proto)) - { - if (! PROTOCOL_V2_FORWARD_DECL (proto)) - build_v2_protocol_reference (proto); - - if (PROTOCOL_LIST (proto)) - generate_v2_protocol_references (PROTOCOL_LIST (proto)); - } - } -} -/* APPLE LOCAL end ObjC new abi */ - - -/* Begin code generation for protocols... */ - -/* struct _objc_protocol { - // APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions - struct _objc_protocol_extension *isa; - char *protocol_name; - struct _objc_protocol **protocol_list; - struct _objc__method_prototype_list *instance_methods; - struct _objc__method_prototype_list *class_methods; - }; */ - -static void -build_protocol_template (void) -{ - tree field_decl, field_decl_chain; - - objc_protocol_template = start_struct (RECORD_TYPE, - get_identifier (UTAG_PROTOCOL)); - - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - /* struct _objc_protocol_extension *isa; */ - field_decl = create_field_decl (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier (UTAG_PROTOCOL_EXT))), - "isa"); - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - field_decl_chain = field_decl; - - /* char *protocol_name; */ - field_decl = create_field_decl (string_type_node, "protocol_name"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_protocol **protocol_list; */ - field_decl = create_field_decl (build_pointer_type - (build_pointer_type - (objc_protocol_template)), - "protocol_list"); - chainon (field_decl_chain, field_decl); - - /* struct _objc__method_prototype_list *instance_methods; */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "instance_methods"); - chainon (field_decl_chain, field_decl); - - /* struct _objc__method_prototype_list *class_methods; */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "class_methods"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_protocol_template, field_decl_chain, NULL_TREE); -} - -static tree -build_descriptor_table_initializer (tree type, tree entries) -{ - tree initlist = NULL_TREE; - - do - { - tree eltlist = NULL_TREE; - - eltlist - = tree_cons (NULL_TREE, - build_selector (METHOD_SEL_NAME (entries)), NULL_TREE); - eltlist - = tree_cons (NULL_TREE, - add_objc_string (METHOD_ENCODING (entries), - meth_var_types), - eltlist); - - initlist - = tree_cons (NULL_TREE, - objc_build_constructor (type, nreverse (eltlist)), - initlist); - - entries = TREE_CHAIN (entries); - } - while (entries); - - return objc_build_constructor (build_array_type (type, 0), - nreverse (initlist)); -} - -/* struct objc_method_prototype_list { - int count; - struct objc_method_prototype { - SEL name; - char *types; - } list[1]; - }; */ - -static tree -build_method_prototype_list_template (tree list_type, int size) -{ - tree objc_ivar_list_record; - tree field_decl, field_decl_chain; - - /* Generate an unnamed struct definition. */ - - objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); - - /* int method_count; */ - field_decl = create_field_decl (integer_type_node, "method_count"); - field_decl_chain = field_decl; - - /* struct objc_method method_list[]; */ - field_decl = create_field_decl (build_array_type - (list_type, - build_index_type - (build_int_cst (NULL_TREE, size - 1))), - "method_list"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); - - return objc_ivar_list_record; -} - -static tree -build_method_prototype_template (void) -{ - tree proto_record; - tree field_decl, field_decl_chain; - - proto_record - = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD_PROTOTYPE)); - - /* SEL _cmd; */ - field_decl = create_field_decl (objc_selector_type, "_cmd"); - field_decl_chain = field_decl; - - /* char *method_types; */ - field_decl = create_field_decl (string_type_node, "method_types"); - chainon (field_decl_chain, field_decl); - - finish_struct (proto_record, field_decl_chain, NULL_TREE); - - return proto_record; -} - -static tree -objc_method_parm_type (tree type) -{ - type = TREE_VALUE (TREE_TYPE (type)); - if (TREE_CODE (type) == TYPE_DECL) - type = TREE_TYPE (type); - return type; -} - -static int -objc_encoded_type_size (tree type) -{ - int sz = int_size_in_bytes (type); - - /* Make all integer and enum types at least as large - as an int. */ - if (sz > 0 && INTEGRAL_TYPE_P (type)) - sz = MAX (sz, int_size_in_bytes (integer_type_node)); - /* Treat arrays as pointers, since that's how they're - passed in. */ - else if (TREE_CODE (type) == ARRAY_TYPE) - sz = int_size_in_bytes (ptr_type_node); - return sz; -} - -static tree -encode_method_prototype (tree method_decl) -{ - tree parms; - int parm_offset, i; - char buf[40]; - tree result; - - /* ONEWAY and BYCOPY, for remote object are the only method qualifiers. */ - encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (method_decl))); - - /* Encode return type. */ - encode_type (objc_method_parm_type (method_decl), - obstack_object_size (&util_obstack), - OBJC_ENCODE_INLINE_DEFS); - - /* Stack size. */ - /* The first two arguments (self and _cmd) are pointers; account for - their size. */ - i = int_size_in_bytes (ptr_type_node); - parm_offset = 2 * i; - for (parms = METHOD_SEL_ARGS (method_decl); parms; - parms = TREE_CHAIN (parms)) - { - tree type = objc_method_parm_type (parms); - int sz = objc_encoded_type_size (type); - - /* If a type size is not known, bail out. */ - if (sz < 0) - { - error ("type %q+D does not have a known size", - type); - /* Pretend that the encoding succeeded; the compilation will - fail nevertheless. */ - goto finish_encoding; - } - parm_offset += sz; - } - - sprintf (buf, "%d@0:%d", parm_offset, i); - obstack_grow (&util_obstack, buf, strlen (buf)); - - /* Argument types. */ - parm_offset = 2 * i; - for (parms = METHOD_SEL_ARGS (method_decl); parms; - parms = TREE_CHAIN (parms)) - { - tree type = objc_method_parm_type (parms); - - /* Process argument qualifiers for user supplied arguments. */ - encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (parms))); - - /* Type. */ - encode_type (type, obstack_object_size (&util_obstack), - OBJC_ENCODE_INLINE_DEFS); - - /* Compute offset. */ - sprintf (buf, "%d", parm_offset); - parm_offset += objc_encoded_type_size (type); - - obstack_grow (&util_obstack, buf, strlen (buf)); - } - - finish_encoding: - obstack_1grow (&util_obstack, '\0'); - result = get_identifier (obstack_finish (&util_obstack)); - obstack_free (&util_obstack, util_firstobj); - return result; -} - -static tree -generate_descriptor_table (tree type, const char *name, int size, tree list, - /* APPLE LOCAL ObjC new abi */ - tree proto, bool newabi) -{ - tree decl, initlist; - /* APPLE LOCAL begin radar 6064186 */ - const char* ref_name = synth_id_with_class_suffix (name, proto); - decl = start_var_decl (type, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - /* APPLE LOCAL begin ObjC new abi */ - if (newabi) - { - int entsize; - /* APPLE LOCAL radar 6064186 */ - set_user_assembler_name (decl, ref_name); - entsize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template)); - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, entsize)); - initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); - } - else - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); - /* APPLE LOCAL end ObjC new abi */ - initlist = tree_cons (NULL_TREE, list, initlist); - - finish_var_decl (decl, objc_build_constructor (type, nreverse (initlist))); - - return decl; -} - -/* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ -static void -generate_method_descriptors (tree protocol, bool is_optional) -{ - tree initlist, chain, method_list_template; - int size; - - if (!objc_method_prototype_template) - objc_method_prototype_template = build_method_prototype_template (); - - chain = is_optional ? PROTOCOL_OPTIONAL_CLS_METHODS (protocol) - : PROTOCOL_CLS_METHODS (protocol); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_method_prototype_list_template (objc_method_prototype_template, - size); - - initlist - = build_descriptor_table_initializer (objc_method_prototype_template, - chain); - - if (is_optional) - UOBJC_PROTOCOL_OPT_CLS_METHODS_decl - = generate_descriptor_table (method_list_template, - /* APPLE LOCAL radar 4695109 */ - "_OBJC_PROTOCOL_CLASS_METHODS_OPT", - /* APPLE LOCAL ObjC new abi */ - size, initlist, protocol, false); - else - UOBJC_CLASS_METHODS_decl - = generate_descriptor_table (method_list_template, - "_OBJC_PROTOCOL_CLASS_METHODS", - /* APPLE LOCAL ObjC new abi */ - size, initlist, protocol, false); - } - else - { - if (is_optional) - UOBJC_PROTOCOL_OPT_CLS_METHODS_decl = 0; - else - UOBJC_CLASS_METHODS_decl = 0; - } - - chain = is_optional ? PROTOCOL_OPTIONAL_NST_METHODS (protocol) - : PROTOCOL_NST_METHODS (protocol); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_method_prototype_list_template (objc_method_prototype_template, - size); - initlist - = build_descriptor_table_initializer (objc_method_prototype_template, - chain); - - if (is_optional) - UOBJC_PROTOCOL_OPT_NST_METHODS_decl - = generate_descriptor_table (method_list_template, - /* APPLE LOCAL radar 4695109 */ - "_OBJC_PROTOCOL_INSTANCE_METHODS_OPT", - /* APPLE LOCAL ObjC new abi */ - size, initlist, protocol, false); - else - UOBJC_INSTANCE_METHODS_decl - = generate_descriptor_table (method_list_template, - "_OBJC_PROTOCOL_INSTANCE_METHODS", - /* APPLE LOCAL ObjC new abi */ - size, initlist, protocol, false); - } - else - { - if (is_optional) - UOBJC_PROTOCOL_OPT_NST_METHODS_decl = 0; - else - UOBJC_INSTANCE_METHODS_decl = 0; - } -} -/* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - -static void -generate_protocol_references (tree plist) -{ - tree lproto; - - /* Forward declare protocols referenced. */ - for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) - { - tree proto = TREE_VALUE (lproto); - - if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_NAME (proto)) - { - if (! PROTOCOL_FORWARD_DECL (proto)) - build_protocol_reference (proto); - - if (PROTOCOL_LIST (proto)) - generate_protocol_references (PROTOCOL_LIST (proto)); - } - } -} - -/* Generate either '- .cxx_construct' or '- .cxx_destruct' for the - current class. */ -#ifdef OBJCPLUS -static void -objc_generate_cxx_ctor_or_dtor (bool dtor) -{ - tree fn, body, compound_stmt, ivar; - - /* - (id) .cxx_construct { ... return self; } */ - /* - (void) .cxx_construct { ... } */ - - objc_set_method_type (MINUS_EXPR); - objc_start_method_definition - (objc_build_method_signature (build_tree_list (NULL_TREE, - dtor - ? void_type_node - : objc_object_type), - get_identifier (dtor - ? TAG_CXX_DESTRUCT - : TAG_CXX_CONSTRUCT), - make_node (TREE_LIST), - /* APPLE LOCAL radar 3803157 - objc attribute */ - false), NULL_TREE); - body = begin_function_body (); - compound_stmt = begin_compound_stmt (0); - - ivar = CLASS_IVARS (implementation_template); - /* Destroy ivars in reverse order. */ - if (dtor) - ivar = nreverse (copy_list (ivar)); - - for (; ivar; ivar = TREE_CHAIN (ivar)) - { - if (TREE_CODE (ivar) == FIELD_DECL) - { - tree type = TREE_TYPE (ivar); - - /* Call the ivar's default constructor or destructor. Do not - call the destructor unless a corresponding constructor call - has also been made (or is not needed). */ - if (IS_AGGR_TYPE (type) - && (dtor - ? (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) - && (!TYPE_NEEDS_CONSTRUCTING (type) - || TYPE_HAS_DEFAULT_CONSTRUCTOR (type))) - : (TYPE_NEEDS_CONSTRUCTING (type) - && TYPE_HAS_DEFAULT_CONSTRUCTOR (type)))) - finish_expr_stmt - (build_special_member_call - (build_ivar_reference (DECL_NAME (ivar)), - dtor ? complete_dtor_identifier : complete_ctor_identifier, - NULL_TREE, type, LOOKUP_NORMAL)); - } - } - - /* The constructor returns 'self'. */ - if (!dtor) - finish_return_stmt (self_decl); - - finish_compound_stmt (compound_stmt); - finish_function_body (body); - fn = current_function_decl; - finish_function (); - objc_finish_method_definition (fn); -} - -/* The following routine will examine the current @interface for any - non-POD C++ ivars requiring non-trivial construction and/or - destruction, and then synthesize special '- .cxx_construct' and/or - '- .cxx_destruct' methods which will run the appropriate - construction or destruction code. Note that ivars inherited from - super-classes are _not_ considered. */ -static void -objc_generate_cxx_cdtors (void) -{ - bool need_ctor = false, need_dtor = false; - tree ivar; - - /* APPLE LOCAL begin radar 4407151 */ - /* Error case, due to possibly an extra @end. */ - if (!objc_implementation_context) - return; - /* APPLE LOCAL end radar 4407151 */ - - /* We do not want to do this for categories, since they do not have - their own ivars. */ - - if (TREE_CODE (objc_implementation_context) != CLASS_IMPLEMENTATION_TYPE) - return; - - /* First, determine if we even need a constructor and/or destructor. */ - - for (ivar = CLASS_IVARS (implementation_template); ivar; - ivar = TREE_CHAIN (ivar)) - { - if (TREE_CODE (ivar) == FIELD_DECL) - { - tree type = TREE_TYPE (ivar); - - if (IS_AGGR_TYPE (type)) - { - if (TYPE_NEEDS_CONSTRUCTING (type) - && TYPE_HAS_DEFAULT_CONSTRUCTOR (type)) - /* NB: If a default constructor is not available, we will not - be able to initialize this ivar; the add_instance_variable() - routine will already have warned about this. */ - need_ctor = true; - - if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) - && (!TYPE_NEEDS_CONSTRUCTING (type) - || TYPE_HAS_DEFAULT_CONSTRUCTOR (type))) - /* NB: If a default constructor is not available, we will not - call the destructor either, for symmetry. */ - need_dtor = true; - } - } - } - - /* Generate '- .cxx_construct' if needed. */ - - if (need_ctor) - objc_generate_cxx_ctor_or_dtor (false); - - /* Generate '- .cxx_destruct' if needed. */ - - if (need_dtor) - objc_generate_cxx_ctor_or_dtor (true); - - /* The 'imp_list' variable points at an imp_entry record for the current - @implementation. Record the existence of '- .cxx_construct' and/or - '- .cxx_destruct' methods therein; it will be included in the - metadata for the class. */ - if (flag_next_runtime) - imp_list->has_cxx_cdtors = (need_ctor || need_dtor); -} -#endif - -/* For each protocol which was referenced either from a @protocol() - expression, or because a class/category implements it (then a - pointer to the protocol is stored in the struct describing the - class/category), we create a statically allocated instance of the - Protocol class. The code is written in such a way as to generate - as few Protocol objects as possible; we generate a unique Protocol - instance for each protocol, and we don't generate a Protocol - instance if the protocol is never referenced (either from a - @protocol() or from a class/category implementation). These - statically allocated objects can be referred to via the static - (that is, private to this module) symbols _OBJC_PROTOCOL_n. - - The statically allocated Protocol objects that we generate here - need to be fixed up at runtime in order to be used: the 'isa' - pointer of the objects need to be set up to point to the 'Protocol' - class, as known at runtime. - - The NeXT runtime fixes up all protocols at program startup time, - before main() is entered. It uses a low-level trick to look up all - those symbols, then loops on them and fixes them up. - - The GNU runtime as well fixes up all protocols before user code - from the module is executed; it requires pointers to those symbols - to be put in the objc_symtab (which is then passed as argument to - the function __objc_exec_class() which the compiler sets up to be - executed automatically when the module is loaded); setup of those - Protocol objects happen in two ways in the GNU runtime: all - Protocol objects referred to by a class or category implementation - are fixed up when the class/category is loaded; all Protocol - objects referred to by a @protocol() expression are added by the - compiler to the list of statically allocated instances to fixup - (the same list holding the statically allocated constant string - objects). Because, as explained above, the compiler generates as - few Protocol objects as possible, some Protocol object might end up - being referenced multiple times when compiled with the GNU runtime, - and end up being fixed up multiple times at runtime initialization. - But that doesn't hurt, it's just a little inefficient. */ - -static void -generate_protocols (void) -{ - tree p, encoding; - tree decl; - tree initlist, protocol_name_expr, refs_decl, refs_expr; - - /* If a protocol was directly referenced, pull in indirect references. */ - for (p = protocol_chain; p; p = TREE_CHAIN (p)) - if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p)) - generate_protocol_references (PROTOCOL_LIST (p)); - - for (p = protocol_chain; p; p = TREE_CHAIN (p)) - { - /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - tree save_objc_implementation_context; - tree nst_methods = PROTOCOL_NST_METHODS (p); - tree cls_methods = PROTOCOL_CLS_METHODS (p); - - /* If protocol wasn't referenced, don't generate any code. */ - decl = PROTOCOL_FORWARD_DECL (p); - - if (!decl) - continue; - - /* Make sure we link in the Protocol class. */ - add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); - - while (nst_methods) - { - if (! METHOD_ENCODING (nst_methods)) - { - encoding = encode_method_prototype (nst_methods); - METHOD_ENCODING (nst_methods) = encoding; - } - nst_methods = TREE_CHAIN (nst_methods); - } - - while (cls_methods) - { - if (! METHOD_ENCODING (cls_methods)) - { - encoding = encode_method_prototype (cls_methods); - METHOD_ENCODING (cls_methods) = encoding; - } - - cls_methods = TREE_CHAIN (cls_methods); - } - /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - generate_method_descriptors (p, false); - - if (PROTOCOL_LIST (p)) - refs_decl = generate_protocol_list (p); - else - refs_decl = 0; - - /* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */ - protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names); - - if (refs_decl) - refs_expr = convert (build_pointer_type (build_pointer_type - (objc_protocol_template)), - build_unary_op (ADDR_EXPR, refs_decl, 0)); - else - /* APPLE LOCAL begin radar 6285794 */ - refs_expr = - convert (build_pointer_type (build_pointer_type (objc_protocol_template)), - integer_zero_node); - /* APPLE LOCAL end radar 6285794 */ - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - save_objc_implementation_context = objc_implementation_context; - objc_implementation_context = p; - generate_v2_property_tables (p); - objc_implementation_context = save_objc_implementation_context; - - nst_methods = PROTOCOL_OPTIONAL_NST_METHODS (p); - cls_methods = PROTOCOL_OPTIONAL_CLS_METHODS (p); - while (nst_methods) - { - if (! METHOD_ENCODING (nst_methods)) - { - encoding = encode_method_prototype (nst_methods); - METHOD_ENCODING (nst_methods) = encoding; - } - nst_methods = TREE_CHAIN (nst_methods); - } - while (cls_methods) - { - if (! METHOD_ENCODING (cls_methods)) - { - encoding = encode_method_prototype (cls_methods); - METHOD_ENCODING (cls_methods) = encoding; - } - - cls_methods = TREE_CHAIN (cls_methods); - } - generate_method_descriptors (p, true); - UOBJC_PROTOCOL_EXT_decl = generate_objc_protocol_extension (p, - UOBJC_PROTOCOL_OPT_NST_METHODS_decl, - UOBJC_PROTOCOL_OPT_CLS_METHODS_decl, - UOBJC_V2_PROPERTY_decl); - - /* UOBJC_INSTANCE_METHODS_decl/UOBJC_CLASS_METHODS_decl are set - by generate_method_descriptors, which is called above. */ - initlist = build_protocol_initializer (TREE_TYPE (decl), - protocol_name_expr, refs_expr, - UOBJC_INSTANCE_METHODS_decl, - /* APPLE LOCAL ObjC new abi */ - UOBJC_CLASS_METHODS_decl, false, NULL_TREE, - /* APPLE LOCAL radar 4695109 */ - UOBJC_PROTOCOL_EXT_decl, NULL_TREE); - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - finish_var_decl (decl, initlist); - } -} - -static tree -build_protocol_initializer (tree type, tree protocol_name, - tree protocol_list, tree instance_methods, - /* APPLE LOCAL ObjC new abi */ - tree class_methods, bool newabi, tree property_list, -/* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions - radar 4695109 */ - tree objc_protocol_or_opt_ins_meth, tree opt_cls_meth) -{ - tree initlist = NULL_TREE, expr; - /* APPLE LOCAL begin ObjC new abi */ - /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ - /* APPLE LOCAL begin radar 4533974 - ObjC newprotocol - radar 4695109 */ - if (newabi) - { - /* 'isa' is NULL in the new ObjC abi */ - /* APPLE LOCAL begin radar 6285794 */ - expr = convert (objc_object_type, integer_zero_node); - /* APPLE LOCAL end radar 6285794 */ - } - /* APPLE LOCAL end radar 4533974 - ObjC newprotocol - radar 4695109 */ - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - /* "isa" field now points to struct _objc_protocol_extension * */ - else - { - if (!objc_protocol_or_opt_ins_meth) - /* APPLE LOCAL begin radar 6285794 */ - { - if (!objc_protocol_extension_template) - build_objc_protocol_extension_template (); - - expr = - convert (build_pointer_type (objc_protocol_extension_template), - integer_zero_node); - } - /* APPLE LOCAL end radar 6285794 */ - else - expr = convert (build_pointer_type (objc_protocol_extension_template), - build_unary_op (ADDR_EXPR, objc_protocol_or_opt_ins_meth, 0)); - } - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - - initlist = tree_cons (NULL_TREE, expr, initlist); - /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ - /* APPLE LOCAL end ObjC new abi */ - initlist = tree_cons (NULL_TREE, protocol_name, initlist); - initlist = tree_cons (NULL_TREE, protocol_list, initlist); - - if (!instance_methods) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_proto_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_proto_list_ptr, - build_unary_op (ADDR_EXPR, instance_methods, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - if (!class_methods) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_proto_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_proto_list_ptr, - build_unary_op (ADDR_EXPR, class_methods, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - if (newabi) - { - /* APPLE LOCAL begin radar 4695109 */ - if (!objc_protocol_or_opt_ins_meth) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_proto_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_proto_list_ptr, - build_unary_op (ADDR_EXPR, objc_protocol_or_opt_ins_meth, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - if (!opt_cls_meth) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_proto_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_proto_list_ptr, - build_unary_op (ADDR_EXPR, opt_cls_meth, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - /* APPLE LOCAL end radar 4695109 */ - if (!property_list) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_prop_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_prop_list_ptr, - build_unary_op (ADDR_EXPR, property_list, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - /* APPLE LOCAL begin radar 5192466 */ - /* const uint32_t size; = sizeof(struct protocol_t) */ - expr = build_int_cst ( - NULL_TREE, - TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_protocol_template))); - initlist = tree_cons (NULL_TREE, expr, initlist); - /* const uint32_t flags; = 0 */ - initlist = tree_cons (NULL_TREE, integer_zero_node, initlist); - /* APPLE LOCAL end radar 5192466 */ - } - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - return objc_build_constructor (type, nreverse (initlist)); -} - -/* struct _objc_category { - char *category_name; - char *class_name; - struct _objc_method_list *instance_methods; - struct _objc_method_list *class_methods; - struct _objc_protocol_list *protocols; - // APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions - uint32_t size; // sizeof (struct _objc_category) - struct _objc_property_list *instance_properties; // category's own @property decl. - // APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions - }; */ - -static void -build_category_template (void) -{ - tree field_decl, field_decl_chain; - - objc_category_template = start_struct (RECORD_TYPE, - get_identifier (UTAG_CATEGORY)); - - /* char *category_name; */ - field_decl = create_field_decl (string_type_node, "category_name"); - field_decl_chain = field_decl; - - /* char *class_name; */ - field_decl = create_field_decl (string_type_node, "class_name"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_method_list *instance_methods; */ - field_decl = create_field_decl (objc_method_list_ptr, - "instance_methods"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_method_list *class_methods; */ - field_decl = create_field_decl (objc_method_list_ptr, - "class_methods"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_protocol **protocol_list; */ - field_decl = create_field_decl (build_pointer_type - (build_pointer_type - (objc_protocol_template)), - "protocol_list"); - chainon (field_decl_chain, field_decl); - - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - /* uint32_t size; - sizeof (struct _objc_category) */ - field_decl = create_field_decl (integer_type_node, "size"); - chainon (field_decl_chain, field_decl); - /* struct _objc_property_list *instance_properties; This field describes - the category's @property declarations. Properties from inherited protocols - are not included. */ - field_decl = create_field_decl (build_pointer_type ( - xref_tag (RECORD_TYPE, - get_identifier (UTAG_PROPERTY_LIST))), - "instance_properties"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - - finish_struct (objc_category_template, field_decl_chain, NULL_TREE); -} - -/* struct _objc_selector { - SEL sel_id; - char *sel_type; - }; */ - -static void -build_selector_template (void) -{ - - tree field_decl, field_decl_chain; - - objc_selector_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_SELECTOR)); - - /* SEL sel_id; */ - field_decl = create_field_decl (objc_selector_type, "sel_id"); - field_decl_chain = field_decl; - - /* char *sel_type; */ - field_decl = create_field_decl (string_type_node, "sel_type"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_selector_template, field_decl_chain, NULL_TREE); -} - -/* APPLE LOCAL begin ObjC new abi */ - -/* Build type for a category: - struct category_t { - const char * const name; - struct class_t *const cls; - const struct method_list_t * const instance_methods; - const struct method_list_t * const class_methods; - const struct protocol_list_t * const protocols; - const struct _prop_list_t * const properties; - } */ - -static void -build_v2_category_template (void) -{ - tree field_decl, field_decl_chain; - - objc_v2_category_template = start_struct (RECORD_TYPE, - get_identifier ("_category_t")); - - /* char *name; */ - field_decl = create_field_decl (string_type_node, "name"); - field_decl_chain = field_decl; - - /* struct class_t *const cls; */ - field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), - "cls"); - chainon (field_decl_chain, field_decl); - - /* struct method_list_t *instance_methods; */ - field_decl = create_field_decl (objc_method_list_ptr, - "instance_methods"); - chainon (field_decl_chain, field_decl); - - /* struct method_list_t *class_methods; */ - field_decl = create_field_decl (objc_method_list_ptr, - "class_methods"); - chainon (field_decl_chain, field_decl); - - /* struct protocol_list_t *protocol_list; */ - field_decl = create_field_decl (build_pointer_type - (objc_v2_protocol_template), - "protocol_list"); - chainon (field_decl_chain, field_decl); - - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - /* struct _prop_list_t * properties; */ - field_decl = create_field_decl (objc_prop_list_ptr, - "properties"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - finish_struct (objc_v2_category_template, field_decl_chain, NULL_TREE); -} - - -/* Build following types which represent each class implementation. - - struct class_t { - struct class_t *isa; - // APPLE LOCAL radar 4705214 - struct class_t * const superclass; - __strong void *cache; - __strong IMP *vtable; - // APPLE LOCAL radar 4705214 - __strong struct class_ro_t *ro; - }; - - struct class_ro_t { - uint32_t const flags; - uint32_t const instanceStart; - uint32_t const instanceSize; - #ifdef __LP64__ - uint32_t const reserved; - #endif - const uint8_t * const ivarLayout; - // APPLE LOCAL radar 4705214 - // - Moved to: 'struct class_t' struct class_t * const superclass; - - const char *const name; - const struct method_list_t * const baseMethods; - const struct objc_protocol_list *const baseProtocols; - const struct ivar_list_t *const ivars; - // APPLE LOCAL radar 4695101 - const uint8_t * const weakIvarLayout; - const struct _prop_list_t * const properties; - }; */ - -static void -build_v2_class_template (void) -{ - tree field_decl, field_decl_chain; - - objc_v2_class_ro_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_V2_CLASS_RO)); - - objc_v2_class_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_V2_CLASS)); - - /* struct class_t *isa; */ - field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), - "isa"); - field_decl_chain = field_decl; - - /* struct class_t * const superclass */ - field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), - "superclass"); - chainon (field_decl_chain, field_decl); - - /* __strong void *cache; */ - /* TODO: __strong is missing. */ - field_decl = create_field_decl (build_pointer_type (void_type_node), - "cache"); - chainon (field_decl_chain, field_decl); - - /* __strong IMP *vtable; */ - /* TODO: __strong is missing. */ - field_decl = create_field_decl (build_pointer_type (objc_imp_type), - "vtable"); - chainon (field_decl_chain, field_decl); - - /* __strong struct class_ro_t *ro; */ - /* TODO: __strong is missing. */ - field_decl = create_field_decl (build_pointer_type (objc_v2_class_ro_template), - "ro"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_v2_class_template, field_decl_chain, NULL_TREE); - - /* struct class_ro_t {...} */ - - /* uint32_t const flags; */ - field_decl = create_field_decl (integer_type_node, "flags"); - field_decl_chain = field_decl; - - /* uint32_t const instanceStart */ - field_decl = create_field_decl (integer_type_node, "instanceStart"); - chainon (field_decl_chain, field_decl); - - /* uint32_t const instanceSize */ - field_decl = create_field_decl (integer_type_node, "instanceSize"); - chainon (field_decl_chain, field_decl); - - if (TARGET_64BIT) - { - /* uint32_t const reserved */ - field_decl = create_field_decl (integer_type_node, "reserved"); - chainon (field_decl_chain, field_decl); - } - - /* const uint8_t * const ivarLayout */ - /* APPLE LOCAL 4695101 */ - field_decl = create_field_decl (string_type_node, - "ivarLayout"); - chainon (field_decl_chain, field_decl); - - /* const char *const name; */ - field_decl = create_field_decl (string_type_node, "name"); - chainon (field_decl_chain, field_decl); - - /* const struct method_list_t * const baseMethods */ - field_decl = create_field_decl (objc_method_list_ptr, - "baseMethods"); - chainon (field_decl_chain, field_decl); - - /* const struct objc_protocol_list *const baseProtocols */ - field_decl = create_field_decl (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier - (UTAG_V2_PROTOCOL_LIST))), - "baseProtocols"); - chainon (field_decl_chain, field_decl); - - /* const struct ivar_list_t *const ivars */ - field_decl = create_field_decl (objc_v2_ivar_list_ptr, - "ivars"); - chainon (field_decl_chain, field_decl); - - /* APPLE LOCAL begin radar 4695101 */ - /* const uint8_t * const weakIvarLayout; */ - field_decl = create_field_decl (string_type_node, "weakIvarLayout"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end radar 4695101 */ - - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - /* struct _prop_list_t * properties */ - field_decl = create_field_decl (objc_prop_list_ptr, - "properties"); - chainon (field_decl_chain, field_decl); - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - finish_struct (objc_v2_class_ro_template, field_decl_chain, NULL_TREE); -} -/* APPLE LOCAL end ObjC new abi */ - -/* struct _objc_class { - struct _objc_class *isa; - struct _objc_class *super_class; - char *name; - long version; - long info; - long instance_size; - struct _objc_ivar_list *ivars; - struct _objc_method_list *methods; - #ifdef __NEXT_RUNTIME__ - struct objc_cache *cache; - #else - struct sarray *dtable; - struct _objc_class *subclass_list; - struct _objc_class *sibling_class; - #endif - struct _objc_protocol_list *protocols; - // APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions - #ifdef __NEXT_RUNTIME__ - const char *ivar_layout; - struct _objc_class_ext *ext; - #else - void *gc_object_type; - #endif - // APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions - }; */ - -/* NB: The 'sel_id' and 'gc_object_type' fields are not being used by - the NeXT/Apple runtime; still, the compiler must generate them to - maintain backward binary compatibility (and to allow for future - expansion). */ - -static void -build_class_template (void) -{ - tree field_decl, field_decl_chain; - - objc_class_template - = start_struct (RECORD_TYPE, get_identifier (UTAG_CLASS)); - - /* struct _objc_class *isa; */ - field_decl = create_field_decl (build_pointer_type (objc_class_template), - "isa"); - field_decl_chain = field_decl; - - /* struct _objc_class *super_class; */ - field_decl = create_field_decl (build_pointer_type (objc_class_template), - "super_class"); - chainon (field_decl_chain, field_decl); - - /* char *name; */ - field_decl = create_field_decl (string_type_node, "name"); - chainon (field_decl_chain, field_decl); - - /* long version; */ - field_decl = create_field_decl (long_integer_type_node, "version"); - chainon (field_decl_chain, field_decl); - - /* long info; */ - field_decl = create_field_decl (long_integer_type_node, "info"); - chainon (field_decl_chain, field_decl); - - /* long instance_size; */ - field_decl = create_field_decl (long_integer_type_node, "instance_size"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_ivar_list *ivars; */ - field_decl = create_field_decl (objc_ivar_list_ptr, - "ivars"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_method_list *methods; */ - field_decl = create_field_decl (objc_method_list_ptr, - "methods"); - chainon (field_decl_chain, field_decl); - - if (flag_next_runtime) - { - /* struct objc_cache *cache; */ - field_decl = create_field_decl (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier - ("objc_cache"))), - "cache"); - chainon (field_decl_chain, field_decl); - } - else - { - /* struct sarray *dtable; */ - field_decl = create_field_decl (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier - ("sarray"))), - "dtable"); - chainon (field_decl_chain, field_decl); - - /* struct objc_class *subclass_list; */ - field_decl = create_field_decl (build_pointer_type - (objc_class_template), - "subclass_list"); - chainon (field_decl_chain, field_decl); - - /* struct objc_class *sibling_class; */ - field_decl = create_field_decl (build_pointer_type - (objc_class_template), - "sibling_class"); - chainon (field_decl_chain, field_decl); - } - - /* struct _objc_protocol **protocol_list; */ - field_decl = create_field_decl (build_pointer_type - (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier - (UTAG_PROTOCOL)))), - "protocol_list"); - chainon (field_decl_chain, field_decl); - - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - if (flag_next_runtime) - { - /* const char *ivar_layout; */ - field_decl = create_field_decl (string_type_node, "ivar_layout"); - chainon (field_decl_chain, field_decl); - - /* struct _objc_class_ext *ext; */ - field_decl = create_field_decl (build_pointer_type ( - xref_tag (RECORD_TYPE, - get_identifier - (UTAG_CLASS_EXT))), - "ext"); - chainon (field_decl_chain, field_decl); - } - else - { - /* void *gc_object_type; */ - field_decl = create_field_decl (build_pointer_type (void_type_node), - "gc_object_type"); - chainon (field_decl_chain, field_decl); - } - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - - finish_struct (objc_class_template, field_decl_chain, NULL_TREE); -} - -/* Generate appropriate forward declarations for an implementation. */ - -static void -synth_forward_declarations (void) -{ - tree an_id; - - /* static struct objc_class _OBJC_CLASS_<my_name>; */ - UOBJC_CLASS_decl = build_metadata_decl ("_OBJC_CLASS", - /* APPLE LOCAL radar 5202926 */ - objc_class_template, false); - - /* static struct objc_class _OBJC_METACLASS_<my_name>; */ - UOBJC_METACLASS_decl = build_metadata_decl ("_OBJC_METACLASS", - /* APPLE LOCAL radar 5202926 */ - objc_class_template, false); - - /* Pre-build the following entities - for speed/convenience. */ - - an_id = get_identifier ("super_class"); - ucls_super_ref = objc_build_component_ref (UOBJC_CLASS_decl, an_id); - uucls_super_ref = objc_build_component_ref (UOBJC_METACLASS_decl, an_id); -} - -/* APPLE LOCAL begin ObjC abi v2 */ -/* Generate appropriate forward declarations for an implementation. */ - -static void -synth_v2_forward_declarations (void) -{ - /* struct class_t OBJC_CLASS_$_<my_name>; */ - UOBJC_V2_CLASS_decl = build_metadata_decl ("OBJC_CLASS_$", - /* APPLE LOCAL radar 5202926 */ - objc_v2_class_template, true); - - /* struct class_t OBJC_METACLASS_$_<my_name>; */ - UOBJC_V2_METACLASS_decl = build_metadata_decl ("OBJC_METACLASS_$", - /* APPLE LOCAL radar 5202926 */ - objc_v2_class_template, true); -} - -static void -/* APPLE LOCAL end ObjC abi v2 */ -error_with_ivar (const char *message, tree decl) -{ - error ("%J%s %qs", decl, - message, gen_declaration (decl)); - -} - -static void -check_ivars (tree inter, tree imp) -{ - tree intdecls = CLASS_RAW_IVARS (inter); - tree impdecls = CLASS_RAW_IVARS (imp); - - while (1) - { - tree t1, t2; - -#ifdef OBJCPLUS - if (intdecls && TREE_CODE (intdecls) == TYPE_DECL) - intdecls = TREE_CHAIN (intdecls); -#endif - if (intdecls == 0 && impdecls == 0) - break; - if (intdecls == 0 || impdecls == 0) - { - error ("inconsistent instance variable specification"); - break; - } - - t1 = TREE_TYPE (intdecls); t2 = TREE_TYPE (impdecls); - - if (!comptypes (t1, t2) - || !tree_int_cst_equal (DECL_INITIAL (intdecls), - DECL_INITIAL (impdecls))) - { - if (DECL_NAME (intdecls) == DECL_NAME (impdecls)) - { - error_with_ivar ("conflicting instance variable type", - impdecls); - error_with_ivar ("previous declaration of", - intdecls); - } - else /* both the type and the name don't match */ - { - error ("inconsistent instance variable specification"); - break; - } - } - - else if (DECL_NAME (intdecls) != DECL_NAME (impdecls)) - { - error_with_ivar ("conflicting instance variable name", - impdecls); - error_with_ivar ("previous declaration of", - intdecls); - } - - intdecls = TREE_CHAIN (intdecls); - impdecls = TREE_CHAIN (impdecls); - } -} - -/* APPLE LOCAL begin ObjC new abi */ -/* Set 'objc_v2_message_ref_template' to the data type node for 'struct _message_ref_t'. - This needs to be done just once per compilation. Also Set - 'objc_v2_super_message_ref_template' to data type node - for 'struct _super_message_ref_t'. - - struct _message_ref_t { - IMP messenger; - SEL name; - }; - where IMP is: id (*) (id, _message_ref_t*, ...) - - struct _super_message_ref_t { - SUPER_IMP messenger; - SEL name; - }; - where SUPER_IMP is: id (*) ( super_t*, _super_message_ref_t*, ...) */ - -static void -build_message_ref_template (void) -{ - tree ptr_message_ref_t; - tree field_decl, field_decl_chain; - /* struct _message_ref_t {...} */ - objc_v2_message_ref_template = start_struct (RECORD_TYPE, - get_identifier ("_message_ref_t")); - - /* IMP messenger; */ - ptr_message_ref_t = build_pointer_type (xref_tag ( - RECORD_TYPE, get_identifier ("_message_ref_t"))); - objc_v2_imp_type - = build_pointer_type - (build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_object_type, - tree_cons (NULL_TREE, ptr_message_ref_t, - NULL_TREE)))); - field_decl = create_field_decl (objc_v2_imp_type, "messenger"); - field_decl_chain = field_decl; - - /* SEL name; */ - field_decl = create_field_decl (objc_selector_type, "name"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_v2_message_ref_template, field_decl_chain, NULL_TREE); - objc_v2_selector_type = build_pointer_type (objc_v2_message_ref_template); - - /* struct _super_message_ref_t {...} */ - objc_v2_super_message_ref_template = start_struct (RECORD_TYPE, - get_identifier ("_super_message_ref_t")); - - /* SUPER_IMP messenger; */ - ptr_message_ref_t = build_pointer_type (xref_tag ( - RECORD_TYPE, get_identifier ("_super_message_ref_t"))); - - objc_v2_super_imp_type - = build_pointer_type - (build_function_type (objc_object_type, - tree_cons (NULL_TREE, objc_super_type, - tree_cons (NULL_TREE, ptr_message_ref_t, - NULL_TREE)))); - field_decl = create_field_decl (objc_v2_super_imp_type, "messenger"); - field_decl_chain = field_decl; - - /* SEL name; */ - field_decl = create_field_decl (objc_selector_type, "name"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_v2_super_message_ref_template, field_decl_chain, NULL_TREE); - objc_v2_super_selector_type = build_pointer_type (objc_v2_super_message_ref_template); -} -/* APPLE LOCAL end ObjC new abi */ - -/* Set 'objc_super_template' to the data type node for 'struct _objc_super'. - This needs to be done just once per compilation. */ - -/* APPLE LOCAL begin ObjC abi v2 */ -/* struct _objc_super { - struct _objc_object *self; - struct _objc_class *cls; // or Class cls; for the abi v2 - }; */ -/* APPLE LOCAL end ObjC abi v2 */ - -static void -build_super_template (void) -{ - tree field_decl, field_decl_chain; - - objc_super_template = start_struct (RECORD_TYPE, get_identifier (UTAG_SUPER)); - - /* struct _objc_object *self; */ - field_decl = create_field_decl (objc_object_type, "self"); - field_decl_chain = field_decl; - - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2) - { - /* Class cls; */ - field_decl = create_field_decl (objc_class_type, "cls"); - } - else - { - /* struct _objc_class *cls; */ - field_decl = create_field_decl (build_pointer_type (objc_class_template), - "cls"); - } - /* APPLE LOCAL end ObjC abi v2 */ - chainon (field_decl_chain, field_decl); - - finish_struct (objc_super_template, field_decl_chain, NULL_TREE); -} - -/* APPLE LOCAL begin ObjC new abi */ - -/* struct ivar_t { - unsigned long int *offset; - char *name; - char *type; - uint32_t alignment; - uint32_t size; - }; */ - -static tree -build_v2_ivar_t_template (void) -{ - tree objc_ivar_id, objc_ivar_record; - tree field_decl, field_decl_chain; - - objc_ivar_id = get_identifier ("_ivar_t"); - objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id); - - /* uint32_t *offset */ - field_decl = create_field_decl ( - /* APPLE LOCAL radar 4441049 */ - build_pointer_type (TREE_TYPE (size_zero_node)), "offset"); - field_decl_chain = field_decl; - - /* char *name; */ - field_decl = create_field_decl (string_type_node, "name"); - chainon (field_decl_chain, field_decl); - - /* char *type; */ - field_decl = create_field_decl (string_type_node, "type"); - chainon (field_decl_chain, field_decl); - - /* uint32_t alignment; */ - field_decl = create_field_decl (integer_type_node, "alignment"); - chainon (field_decl_chain, field_decl); - - /* uint32_t size; */ - field_decl = create_field_decl (integer_type_node, "size"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_ivar_record, field_decl_chain, NULL_TREE); - - return objc_ivar_record; -} - -/* Build up: - - struct ivar_list_t { - uint32 entsize; - uint32 count; - struct iver_t list[count]; - }; */ - -static tree -build_v2_ivar_list_t_template (tree list_type, int size) -{ - tree objc_ivar_list_record; - tree field_decl, field_decl_chain; - - objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); - - /* uint32 entsize; */ - field_decl = create_field_decl (integer_type_node, "entsize"); - field_decl_chain = field_decl; - - /* uint32 count; */ - field_decl = create_field_decl (integer_type_node, "count"); - chainon (field_decl_chain, field_decl); - - /* struct objc_ivar ivar_list[]; */ - field_decl = create_field_decl (build_array_type - (list_type, - build_index_type - (build_int_cst (NULL_TREE, size - 1))), - "list"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); - - return objc_ivar_list_record; - -} - -/* APPLE LOCAL end ObjC new abi */ - -/* struct _objc_ivar { - char *ivar_name; - char *ivar_type; - int ivar_offset; - }; */ - -static tree -build_ivar_template (void) -{ - tree objc_ivar_id, objc_ivar_record; - tree field_decl, field_decl_chain; - - objc_ivar_id = get_identifier (UTAG_IVAR); - objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id); - - /* char *ivar_name; */ - field_decl = create_field_decl (string_type_node, "ivar_name"); - field_decl_chain = field_decl; - - /* char *ivar_type; */ - field_decl = create_field_decl (string_type_node, "ivar_type"); - chainon (field_decl_chain, field_decl); - - /* int ivar_offset; */ - field_decl = create_field_decl (integer_type_node, "ivar_offset"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_ivar_record, field_decl_chain, NULL_TREE); - - return objc_ivar_record; -} - -/* struct { - int ivar_count; - struct objc_ivar ivar_list[ivar_count]; - }; */ - -static tree -build_ivar_list_template (tree list_type, int size) -{ - tree objc_ivar_list_record; - tree field_decl, field_decl_chain; - - objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); - - /* int ivar_count; */ - field_decl = create_field_decl (integer_type_node, "ivar_count"); - field_decl_chain = field_decl; - - /* struct objc_ivar ivar_list[]; */ - field_decl = create_field_decl (build_array_type - (list_type, - build_index_type - (build_int_cst (NULL_TREE, size - 1))), - "ivar_list"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); - - return objc_ivar_list_record; -} - -/* struct { - struct _objc__method_prototype_list *method_next; - int method_count; - struct objc_method method_list[method_count]; - }; */ - -/* APPLE LOCAL begin ObjC new abi */ -/* struct method_list_t { - uint32_t entsize; - uint32_t method_count; - struct objc_method method_list[method_count]; - }; */ - -static tree -build_v2_method_list_template (tree list_type, int size) -{ - tree method_list_t_record; - tree field_decl, field_decl_chain; - - method_list_t_record = start_struct (RECORD_TYPE, NULL_TREE); - - /* uint32_t const entsize */ - field_decl = create_field_decl (integer_type_node, "entsize"); - - field_decl_chain = field_decl; - - /* int method_count; */ - field_decl = create_field_decl (integer_type_node, "method_count"); - chainon (field_decl_chain, field_decl); - - /* struct objc_method method_list[]; */ - field_decl = create_field_decl (build_array_type - (list_type, - build_index_type - (build_int_cst (NULL_TREE, size - 1))), - "method_list"); - chainon (field_decl_chain, field_decl); - - finish_struct (method_list_t_record, field_decl_chain, NULL_TREE); - - return method_list_t_record; -} -static tree -/* APPLE LOCAL end ObjC new abi */ -build_method_list_template (tree list_type, int size) -{ - tree objc_ivar_list_record; - tree field_decl, field_decl_chain; - - objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); - - /* struct _objc__method_prototype_list *method_next; */ - field_decl = create_field_decl (objc_method_proto_list_ptr, - "method_next"); - field_decl_chain = field_decl; - - /* int method_count; */ - field_decl = create_field_decl (integer_type_node, "method_count"); - chainon (field_decl_chain, field_decl); - - /* struct objc_method method_list[]; */ - field_decl = create_field_decl (build_array_type - (list_type, - build_index_type - (build_int_cst (NULL_TREE, size - 1))), - "method_list"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); - - return objc_ivar_list_record; -} - -/* APPLE LOCAL begin ObjC new abi */ - -/* APPLE LOCAL begin radar 4705298, 4843145 */ - -/* Return a class's visibility attribute string, or - NULL if it has no visibility attribute set. */ - -static const char * -objc_class_visibility (tree class) -{ - tree chain; - /* APPLE LOCAL begin radar 4894756 */ - /* Handle very odd case of a class with no @interface but with @implementation only! */ - if (class && TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE) - return NULL; - /* APPLE LOCAL end radar 4894756 */ - gcc_assert (class && TREE_CODE (class) == CLASS_INTERFACE_TYPE); - for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) - if (is_attribute_p ("visibility", TREE_PURPOSE (chain))) - return TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE ((chain)))); - return NULL; -} - -/* Create a symbol whose visibility attribute matches that of - the given class. */ - -static tree -objc_create_global_decl_for_class (tree type, const char *name, tree class) -{ - tree decl = create_global_decl (type, name); - const char *visibility = objc_class_visibility (class); - - if (visibility && strcmp (visibility, "hidden") == 0) - { - DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; - DECL_VISIBILITY_SPECIFIED (decl) = 1; - } - else if (visibility && strcmp (visibility, "default") == 0) - { - DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT; - DECL_VISIBILITY_SPECIFIED (decl) = 1; - } - - return decl; -} -/* APPLE LOCAL end radar 4705298 , 4843145*/ - -/* This routine builds a name to hold ivar offset. It is of the form: - .objc_ivar.CLASS_NAME.FIELD_DECL */ - -static void -create_ivar_offset_name (char *buf, tree class_name, tree field_decl) -{ - tree fname = DECL_NAME (field_decl); - - /* APPLE LOCAL radar 4540451 */ - sprintf (buf, "%s%s.%s", STRING_V2_IVAR_OFFSET_PREFIX, - IDENTIFIER_POINTER (class_name), - IDENTIFIER_POINTER (fname)); - return; -} - -/* This routine declares a variable to hold the offset for ivar FIELD_DECL. - Variable name is .objc_ivar.ClassName.IvarName. */ - -static tree -ivar_offset_ref (tree class_name, tree field_decl) -{ - tree decl; - char buf[512]; - tree *chain; - tree iter; - bool global_var; - tree field_decl_id; - - /* APPLE LOCAL radar 5610134 */ - gcc_assert (field_decl); - create_ivar_offset_name (buf, class_name, field_decl); - field_decl_id = get_identifier (buf); - - for (iter = ivar_offset_ref_chain; iter; iter = TREE_CHAIN (iter)) - { - tree var = TREE_PURPOSE (iter); - if (DECL_NAME (var) == field_decl_id) - return var; - } - - /* An existing offset symbol not found. Create a new one and add to the chain. */ - chain = &ivar_offset_ref_chain; - /* APPLE LOCAL radar 4951615 */ - global_var = IVAR_PUBLIC_OR_PROTECTED (field_decl); - /* APPLE LOCAL begin radar 4441049 */ - /* APPLE LOCAL begin radar 4705298, 4843145 */ - decl = global_var ? - objc_create_global_decl_for_class ( - TREE_TYPE (size_zero_node), buf, implementation_template) : - create_hidden_decl (TREE_TYPE (size_zero_node), buf); - /* APPLE LOCAL end radar 4705298 , 4843145*/ - /* APPLE LOCAL end radar 4441049 */ - - while (*chain) - chain = &TREE_CHAIN (*chain); - - /* APPLE LOCAL begin radar 4441049 */ - *chain = tree_cons (decl, byte_position (field_decl), NULL_TREE); - /* APPLE LOCAL end radar 4441049 */ - - return decl; -} - -/* This routine builds initializer-list needed to initialize 'struct ivar_t list[count] - of 'struct ivar_list_t' meta data. TYPE is 'struct ivar_t' and FIELD_DECL is - list of ivars for the target class. */ - -static tree -build_v2_ivar_list_initializer (tree class_name, tree type, tree field_decl) -{ - tree initlist = NULL_TREE; - int val; - - do { - tree ivar = NULL_TREE; - - /* Unnamed bitfields are ignored. */ - if (!DECL_NAME (field_decl)) - { - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - continue; - } - - /* Set offset */ - ivar = tree_cons (NULL_TREE, - build_unary_op (ADDR_EXPR, ivar_offset_ref (class_name, field_decl), 0), - ivar); - - /* Set name */ - /* APPLE LOCAL begin radar 5724385 */ - /* At this point fields must be named (no unnamed bitfield, that is) */ - gcc_assert (DECL_NAME (field_decl)); - ivar = tree_cons (NULL_TREE, - add_objc_string (DECL_NAME (field_decl), - meth_var_names), ivar); - /* APPLE LOCAL end radar 5724385 */ - - /* Set type */ - encode_field_decl (field_decl, - obstack_object_size (&util_obstack), - OBJC_ENCODE_DONT_INLINE_DEFS); - /* Null terminate string. */ - obstack_1grow (&util_obstack, 0); - ivar - = tree_cons - (NULL_TREE, - add_objc_string (get_identifier (obstack_finish (&util_obstack)), - meth_var_types), - ivar); - obstack_free (&util_obstack, util_firstobj); - - /* Set alignment */ - /* APPLE LOCAL begin radar 5724385 */ - val = TYPE_ALIGN_UNIT ( - DECL_BIT_FIELD_TYPE (field_decl) ? DECL_BIT_FIELD_TYPE (field_decl) : - TREE_TYPE (field_decl)); - /* APPLE LOCAL end radar 5724385 */ - val = exact_log2 (val); - ivar = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, val), ivar); - - /* Set size */ - val = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); - ivar = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, val), ivar); - - initlist = tree_cons (NULL_TREE, - objc_build_constructor (type, nreverse (ivar)), - initlist); - - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - } - while (field_decl); - - return objc_build_constructor (build_array_type (type, 0), - nreverse (initlist)); -} - -static tree -/* APPLE LOCAL end ObjC new abi */ -build_ivar_list_initializer (tree type, tree field_decl) -{ - tree initlist = NULL_TREE; - - do - { - tree ivar = NULL_TREE; - - /* Set name. */ - if (DECL_NAME (field_decl)) - ivar = tree_cons (NULL_TREE, - add_objc_string (DECL_NAME (field_decl), - meth_var_names), - ivar); - else - /* Unnamed bit-field ivar (yuck). */ - /* APPLE LOCAL begin radar 6285794 */ - ivar = tree_cons (NULL_TREE, - convert (string_type_node, - integer_zero_node), - ivar); - /* APPLE LOCAL end radar 6285794 */ - - /* Set type. */ - encode_field_decl (field_decl, - obstack_object_size (&util_obstack), - OBJC_ENCODE_DONT_INLINE_DEFS); - - /* Null terminate string. */ - obstack_1grow (&util_obstack, 0); - ivar - = tree_cons - (NULL_TREE, - add_objc_string (get_identifier (obstack_finish (&util_obstack)), - meth_var_types), - ivar); - obstack_free (&util_obstack, util_firstobj); - - /* Set offset. */ - ivar = tree_cons (NULL_TREE, byte_position (field_decl), ivar); - initlist = tree_cons (NULL_TREE, - objc_build_constructor (type, nreverse (ivar)), - initlist); - do - field_decl = TREE_CHAIN (field_decl); - while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); - } - while (field_decl); - - return objc_build_constructor (build_array_type (type, 0), - nreverse (initlist)); -} - -static tree -generate_ivars_list (tree type, const char *name, int size, tree list) -{ - tree decl, initlist; - - decl = start_var_decl (type, synth_id_with_class_suffix - (name, objc_implementation_context)); - - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); - initlist = tree_cons (NULL_TREE, list, initlist); - - finish_var_decl (decl, - objc_build_constructor (TREE_TYPE (decl), - nreverse (initlist))); - - return decl; -} - -/* Count only the fields occurring in T. */ - -static int -ivar_list_length (tree t) -{ - int count = 0; - - for (; t; t = TREE_CHAIN (t)) - if (TREE_CODE (t) == FIELD_DECL) - ++count; - - return count; -} - -/* APPLE LOCAL begin ObjC new abi */ - -/* This routine outputs the (ivar_reference_offset, offset) tuples. */ - -static void -generate_v2_ivar_offset_ref_lists (void) -{ - tree chain; - - for (chain = ivar_offset_ref_chain; chain; chain = TREE_CHAIN (chain)) - { - tree decl = TREE_PURPOSE (chain); - tree offset = TREE_VALUE (chain); - finish_var_decl (decl, offset); - } -} - -/* This routine declares a static variable of type 'struct ivar_list_t' and initializes - it. TYPE is 'struct ivar_list_t'. NAME is the suffix for the variable. SIZE is - number of ivars. LIST is the initializer list for list data member of - 'struct ivar_list_t'. IVAR_T_SIZE is size of (struct ivar_t). */ - -static tree -generate_v2_ivars_list (tree type, const char *name, int ivar_t_size, - int size, tree list) -{ - tree decl, initlist; - /* APPLE LOCAL begin radar 6064186 */ - const char *ref_name = synth_id_with_class_suffix (name, objc_implementation_context); - decl = start_var_decl (type, ref_name); - set_user_assembler_name (decl, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, ivar_t_size)); - - initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); - - initlist = tree_cons (NULL_TREE, list, initlist); - - finish_var_decl (decl, - objc_build_constructor (TREE_TYPE (decl), - nreverse (initlist))); - - return decl; -} - -/* This is the top-level routine to build and initialize meta-data for both class and - instance variables. */ - -static void -generate_v2_ivar_lists (void) -{ - tree initlist, ivar_list_template, chain; - int size; - - generating_instance_variables = 1; - - /* build: struct ivar_t {...}; type if not already done so. */ - if (!objc_v2_ivar_template) - objc_v2_ivar_template = build_v2_ivar_t_template (); - - /* Currently there is no class ivars and generation of class variables for the root of - the inheritance has been removed. It causes multiple defines if there are two root classes - in the link, because each will define its own identically-named offset variable. */ - - UOBJC_V2_CLASS_VARIABLES_decl = 0; - - chain = CLASS_IVARS (implementation_template); - if (chain) - { - /* APPLE LOCAL begin radar 5724385 */ - /* Only named data fields are generated. 'size' is this count. */ - tree field_decl = chain; - size = 0; - while (field_decl) { - if (TREE_CODE (field_decl) == FIELD_DECL && DECL_NAME (field_decl)) - size++; - field_decl = TREE_CHAIN (field_decl); - } - /* APPLE LOCAL end radar 5724385 */ - ivar_list_template = build_v2_ivar_list_t_template (objc_v2_ivar_template, - size); - initlist = build_v2_ivar_list_initializer (CLASS_NAME (implementation_template), - objc_v2_ivar_template, chain); - - UOBJC_V2_INSTANCE_VARIABLES_decl - /* APPLE LOCAL radar 6064186 */ - = generate_v2_ivars_list (ivar_list_template, "l_OBJC_$_INSTANCE_VARIABLES", - TREE_INT_CST_LOW ( - TYPE_SIZE_UNIT (objc_v2_ivar_template)), - size, initlist); - } - else - UOBJC_V2_INSTANCE_VARIABLES_decl = 0; - - generating_instance_variables = 0; -} - -static void -/* APPLE LOCAL end ObjC new abi */ -generate_ivar_lists (void) -{ - tree initlist, ivar_list_template, chain; - int size; - - generating_instance_variables = 1; - - if (!objc_ivar_template) - objc_ivar_template = build_ivar_template (); - - /* Only generate class variables for the root of the inheritance - hierarchy since these will be the same for every class. */ - - if (CLASS_SUPER_NAME (implementation_template) == NULL_TREE - && (chain = TYPE_FIELDS (objc_class_template))) - { - size = ivar_list_length (chain); - - ivar_list_template = build_ivar_list_template (objc_ivar_template, size); - initlist = build_ivar_list_initializer (objc_ivar_template, chain); - - UOBJC_CLASS_VARIABLES_decl - = generate_ivars_list (ivar_list_template, "_OBJC_CLASS_VARIABLES", - size, initlist); - } - else - UOBJC_CLASS_VARIABLES_decl = 0; - - chain = CLASS_IVARS (implementation_template); - if (chain) - { - size = ivar_list_length (chain); - ivar_list_template = build_ivar_list_template (objc_ivar_template, size); - initlist = build_ivar_list_initializer (objc_ivar_template, chain); - - UOBJC_INSTANCE_VARIABLES_decl - = generate_ivars_list (ivar_list_template, "_OBJC_INSTANCE_VARIABLES", - size, initlist); - } - else - UOBJC_INSTANCE_VARIABLES_decl = 0; - - generating_instance_variables = 0; -} - -static tree -build_dispatch_table_initializer (tree type, tree entries) -{ - tree initlist = NULL_TREE; - - do - { - tree elemlist = NULL_TREE; - - elemlist = tree_cons (NULL_TREE, - build_selector (METHOD_SEL_NAME (entries)), - NULL_TREE); - - /* Generate the method encoding if we don't have one already. */ - if (! METHOD_ENCODING (entries)) - METHOD_ENCODING (entries) = - encode_method_prototype (entries); - - elemlist = tree_cons (NULL_TREE, - add_objc_string (METHOD_ENCODING (entries), - meth_var_types), - elemlist); - - elemlist - = tree_cons (NULL_TREE, - convert (ptr_type_node, - build_unary_op (ADDR_EXPR, - METHOD_DEFINITION (entries), 1)), - elemlist); - - initlist = tree_cons (NULL_TREE, - objc_build_constructor (type, nreverse (elemlist)), - initlist); - - entries = TREE_CHAIN (entries); - } - while (entries); - - return objc_build_constructor (build_array_type (type, 0), - nreverse (initlist)); -} - -/* To accomplish method prototyping without generating all kinds of - inane warnings, the definition of the dispatch table entries were - changed from: - - struct objc_method { SEL _cmd; ...; id (*_imp)(); }; - to: - struct objc_method { SEL _cmd; ...; void *_imp; }; */ - -static tree -build_method_template (void) -{ - tree _SLT_record; - tree field_decl, field_decl_chain; - - _SLT_record = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD)); - - /* SEL _cmd; */ - field_decl = create_field_decl (objc_selector_type, "_cmd"); - field_decl_chain = field_decl; - - /* char *method_types; */ - field_decl = create_field_decl (string_type_node, "method_types"); - chainon (field_decl_chain, field_decl); - - /* void *_imp; */ - field_decl = create_field_decl (build_pointer_type (void_type_node), - "_imp"); - chainon (field_decl_chain, field_decl); - - finish_struct (_SLT_record, field_decl_chain, NULL_TREE); - - return _SLT_record; -} - - -static tree -/* APPLE LOCAL ObjC new abi */ -generate_dispatch_table (tree type, const char *name, int size, tree list, bool newabi) -{ - tree decl, initlist; - /* APPLE LOCAL begin ObjC new abi */ - int init_val = newabi - ? TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template)) - : 0; - /* APPLE LOCAL end ObjC new abi */ - /* APPLE LOCAL begin radar 6064186 */ - const char* ref_name = synth_id_with_class_suffix (name, objc_implementation_context); - decl = start_var_decl (type, ref_name); - if (newabi) - set_user_assembler_name (decl, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - /* APPLE LOCAL ObjC new abi */ - initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, init_val)); - initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); - initlist = tree_cons (NULL_TREE, list, initlist); - - finish_var_decl (decl, - objc_build_constructor (TREE_TYPE (decl), - nreverse (initlist))); - - return decl; -} - -static void -mark_referenced_methods (void) -{ - struct imp_entry *impent; - tree chain; - - for (impent = imp_list; impent; impent = impent->next) - { - chain = CLASS_CLS_METHODS (impent->imp_context); - while (chain) - { - cgraph_mark_needed_node (cgraph_node (METHOD_DEFINITION (chain))); - chain = TREE_CHAIN (chain); - } - - chain = CLASS_NST_METHODS (impent->imp_context); - while (chain) - { - cgraph_mark_needed_node (cgraph_node (METHOD_DEFINITION (chain))); - chain = TREE_CHAIN (chain); - } - } -} - -static void -generate_dispatch_tables (void) -{ - tree initlist, chain, method_list_template; - int size; - - if (!objc_method_template) - objc_method_template = build_method_template (); - - chain = CLASS_CLS_METHODS (objc_implementation_context); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_method_list_template (objc_method_template, size); - initlist - = build_dispatch_table_initializer (objc_method_template, chain); - - /* APPLE LOCAL begin ObjC new abi */ - UOBJC_CLASS_METHODS_decl - = generate_dispatch_table (method_list_template, - ((TREE_CODE (objc_implementation_context) - == CLASS_IMPLEMENTATION_TYPE) - ? "_OBJC_CLASS_METHODS" - : "_OBJC_CATEGORY_CLASS_METHODS"), - size, initlist, false); - /* APPLE LOCAL end ObjC new abi */ - } - else - UOBJC_CLASS_METHODS_decl = 0; - - chain = CLASS_NST_METHODS (objc_implementation_context); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_method_list_template (objc_method_template, size); - initlist - = build_dispatch_table_initializer (objc_method_template, chain); - - /* APPLE LOCAL begin ObjC new abi */ - if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) - UOBJC_INSTANCE_METHODS_decl - = generate_dispatch_table (method_list_template, - "_OBJC_INSTANCE_METHODS", - size, initlist, false); - else - /* We have a category. */ - UOBJC_INSTANCE_METHODS_decl - = generate_dispatch_table (method_list_template, - "_OBJC_CATEGORY_INSTANCE_METHODS", - size, initlist, false); - /* APPLE LOCAL end ObjC new abi */ - } - else - UOBJC_INSTANCE_METHODS_decl = 0; -} - -/* APPLE LOCAL begin ObjC new abi */ -static void -generate_v2_dispatch_tables (void) -{ - tree initlist, chain, method_list_template; - int size; - - if (!objc_method_template) - objc_method_template = build_method_template (); - - chain = CLASS_CLS_METHODS (objc_implementation_context); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_v2_method_list_template (objc_method_template, size); - initlist - = build_dispatch_table_initializer (objc_method_template, chain); - - UOBJC_V2_CLASS_METHODS_decl - = generate_dispatch_table (method_list_template, - ((TREE_CODE (objc_implementation_context) - == CLASS_IMPLEMENTATION_TYPE) - /* APPLE LOCAL begin radar 6064186 */ - ? "l_OBJC_$_CLASS_METHODS" - : "l_OBJC_$_CATEGORY_CLASS_METHODS"), - /* APPLE LOCAL end radar 6064186 */ - size, initlist, true); - } - else - UOBJC_V2_CLASS_METHODS_decl = 0; - - chain = CLASS_NST_METHODS (objc_implementation_context); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_v2_method_list_template (objc_method_template, size); - initlist - = build_dispatch_table_initializer (objc_method_template, chain); - - if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) - UOBJC_V2_INSTANCE_METHODS_decl - = generate_dispatch_table (method_list_template, - /* APPLE LOCAL radar 6064186 */ - "l_OBJC_$_INSTANCE_METHODS", - size, initlist, true); - else - /* We have a category. */ - UOBJC_V2_INSTANCE_METHODS_decl - = generate_dispatch_table (method_list_template, - /* APPLE LOCAL radar 6064186 */ - "l_OBJC_$_CATEGORY_INSTANCE_METHODS", - size, initlist, true); - } - else - UOBJC_V2_INSTANCE_METHODS_decl = 0; -} - -/* This routine declares a variable to hold meta data for 'struct protocol_list_t'. */ - -static tree -generate_v2_protocol_list (tree i_or_p) -{ - tree initlist; - tree refs_decl, lproto, e, plist; - int size = 0; - const char *ref_name; - - if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE - || TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) - plist = CLASS_PROTOCOL_LIST (i_or_p); - else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) - plist = PROTOCOL_LIST (i_or_p); - else - abort (); - - /* Compute size. */ - for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) - if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_V2_FORWARD_DECL (TREE_VALUE (lproto))) - size++; - - /* Build initializer. */ - initlist = NULL_TREE; - e = build_int_cst (build_pointer_type (objc_v2_protocol_template), size); - initlist = tree_cons (NULL_TREE, e, initlist); - - for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) - { - tree pval = TREE_VALUE (lproto); - - if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_V2_FORWARD_DECL (pval)) - { - e = build_unary_op (ADDR_EXPR, PROTOCOL_V2_FORWARD_DECL (pval), 0); - initlist = tree_cons (NULL_TREE, e, initlist); - } - } - - /* static struct protocol_list_t *list[size]; */ - - /* APPLE LOCAL begin radar 6064186 */ - if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) - ref_name = synth_id_with_class_suffix ("l_OBJC_$_PROTOCOL_REFS", i_or_p); - else if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE) - ref_name = synth_id_with_class_suffix ("l_OBJC_CLASS_PROTOCOLS_$", i_or_p); - else if (TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) - ref_name = synth_id_with_class_suffix ("l_OBJC_CATEGORY_PROTOCOLS_$", i_or_p); - else - abort (); - - refs_decl = start_var_decl - (build_array_type - (build_pointer_type (objc_v2_protocol_template), - build_index_type (build_int_cst (NULL_TREE, size))), - ref_name); - set_user_assembler_name (refs_decl, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - finish_var_decl (refs_decl, objc_build_constructor (TREE_TYPE (refs_decl), - nreverse (initlist))); - - return refs_decl; -} - -/* This routine builds one 'struct method_t' initializer list. Note that the old ABI - is supposed to build 'struct objc_method' which has 3 fields. But it does not - build the initialization expression for 'method_imp' which for protocols is NULL - any way. But to be consistant with declaration of 'struct method_t', in the new - ABI we set the method_t.imp to NULL. */ - -static tree -build_v2_descriptor_table_initializer (tree type, tree entries) -{ - tree initlist = NULL_TREE; - - do - { - tree eltlist - = tree_cons (NULL_TREE, - build_selector (METHOD_SEL_NAME (entries)), NULL_TREE); - eltlist - = tree_cons (NULL_TREE, - add_objc_string (METHOD_ENCODING (entries), - meth_var_types), - eltlist); - - /* APPLE LOCAL begin radar 6285794 */ - eltlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, - integer_zero_node), - eltlist); - /* APPLE LOCAL end radar 6285794 */ - initlist - = tree_cons (NULL_TREE, - objc_build_constructor (type, nreverse (eltlist)), - initlist); - - entries = TREE_CHAIN (entries); - } - while (entries); - - return objc_build_constructor (build_array_type (type, 0), - nreverse (initlist)); -} - -/* This routine builds instance_methods and class_methods use to declare a - protocole. */ - -static void -/* APPLE LOCAL begin radar 4695109 */ -generate_v2_method_descriptors (tree protocol, bool is_optional) -{ - tree initlist, chain, method_list_template; - int size; - - if (!objc_method_template) - objc_method_template = build_method_template (); - - chain = is_optional ? PROTOCOL_OPTIONAL_CLS_METHODS (protocol) - : PROTOCOL_CLS_METHODS (protocol); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_v2_method_list_template (objc_method_template, size); - - initlist - = build_v2_descriptor_table_initializer (objc_method_template, chain); - - if (is_optional) - UOBJC_PROTOCOL_OPT_CLS_METHODS_decl - = generate_descriptor_table (method_list_template, - /* APPLE LOCAL radar 6064186 */ - "l_OBJC_$_PROTOCOL_CLASS_METHODS_OPT", - size, initlist, protocol, true); - else - UOBJC_V2_CLASS_METHODS_decl - = generate_descriptor_table (method_list_template, - /* APPLE LOCAL radar 6064186 */ - "l_OBJC_$_PROTOCOL_CLASS_METHODS", - size, initlist, protocol, true); - } - else - { - if (is_optional) - UOBJC_PROTOCOL_OPT_CLS_METHODS_decl = 0; - else - UOBJC_V2_CLASS_METHODS_decl = 0; - } - - chain = is_optional ? PROTOCOL_OPTIONAL_NST_METHODS (protocol) - : PROTOCOL_NST_METHODS (protocol); - if (chain) - { - size = list_length (chain); - - method_list_template - = build_v2_method_list_template (objc_method_template, size); - initlist - = build_v2_descriptor_table_initializer (objc_method_template, chain); - - if (is_optional) - UOBJC_PROTOCOL_OPT_NST_METHODS_decl - = generate_descriptor_table (method_list_template, - /* APPLE LOCAL radar 6064186 */ - "l_OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT", - size, initlist, protocol, true); - else - UOBJC_V2_INSTANCE_METHODS_decl - = generate_descriptor_table (method_list_template, - /* APPLE LOCAL radar 6064186 */ - "l_OBJC_$_PROTOCOL_INSTANCE_METHODS", - size, initlist, protocol, true); - } - else - { - if (is_optional) - UOBJC_PROTOCOL_OPT_NST_METHODS_decl = 0; - else - UOBJC_V2_INSTANCE_METHODS_decl = 0; - } -} -/* APPLE LOCAL end radar 4695109 */ - -static tree -/* APPLE LOCAL end ObjC new abi */ -generate_protocol_list (tree i_or_p) -{ - tree initlist; - tree refs_decl, lproto, e, plist; - int size = 0; - const char *ref_name; - - if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE - || TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) - plist = CLASS_PROTOCOL_LIST (i_or_p); - else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) - plist = PROTOCOL_LIST (i_or_p); - else - abort (); - - /* Compute size. */ - for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) - if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto))) - size++; - - /* Build initializer. */ - /* APPLE LOCAL radar 6285794 */ - initlist = tree_cons (NULL_TREE, integer_zero_node, NULL_TREE); - e = build_int_cst (build_pointer_type (objc_protocol_template), size); - initlist = tree_cons (NULL_TREE, e, initlist); - - for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) - { - tree pval = TREE_VALUE (lproto); - - if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_FORWARD_DECL (pval)) - { - e = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (pval), 0); - initlist = tree_cons (NULL_TREE, e, initlist); - } - } - - /* static struct objc_protocol *refs[n]; */ - - if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) - ref_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL_REFS", i_or_p); - else if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE) - ref_name = synth_id_with_class_suffix ("_OBJC_CLASS_PROTOCOLS", i_or_p); - else if (TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) - ref_name = synth_id_with_class_suffix ("_OBJC_CATEGORY_PROTOCOLS", i_or_p); - else - abort (); - - refs_decl = start_var_decl - (build_array_type - (build_pointer_type (objc_protocol_template), - build_index_type (build_int_cst (NULL_TREE, size + 2))), - ref_name); - - finish_var_decl (refs_decl, objc_build_constructor (TREE_TYPE (refs_decl), - nreverse (initlist))); - - return refs_decl; -} - -static tree -build_category_initializer (tree type, tree cat_name, tree class_name, - tree instance_methods, tree class_methods, - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - tree protocol_list, - bool abi_v2, tree property_list) - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ -{ - tree initlist = NULL_TREE, expr; - - initlist = tree_cons (NULL_TREE, cat_name, initlist); - initlist = tree_cons (NULL_TREE, class_name, initlist); - - if (!instance_methods) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_list_ptr, - build_unary_op (ADDR_EXPR, instance_methods, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - if (!class_methods) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_list_ptr, - build_unary_op (ADDR_EXPR, class_methods, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* protocol_list = */ - /* APPLE LOCAL begin radar 6285794 */ - { - tree protocol_list_ptr = - (abi_v2) ? build_pointer_type (objc_v2_protocol_template) - : build_pointer_type (build_pointer_type (objc_protocol_template)); - - if (!protocol_list) - initlist = tree_cons (NULL_TREE, - convert (protocol_list_ptr, - integer_zero_node), - initlist); - else - { - /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ - expr = convert (protocol_list_ptr, build_unary_op (ADDR_EXPR, protocol_list, 0)); - /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - /* APPLE LOCAL end radar 6285794 */ - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - if (!abi_v2) - { - /* uint32_t size; */ - int val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_category_template)); - expr = build_int_cst (NULL_TREE, val); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - /* struct _objc_property_list *instance_properties; */ - if (!property_list) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_prop_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_prop_list_ptr, - build_unary_op (ADDR_EXPR, property_list, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - return objc_build_constructor (type, nreverse (initlist)); -} - -/* struct _objc_class { - struct objc_class *isa; - struct objc_class *super_class; - char *name; - long version; - long info; - long instance_size; - struct objc_ivar_list *ivars; - struct objc_method_list *methods; - if (flag_next_runtime) - struct objc_cache *cache; - else { - struct sarray *dtable; - struct objc_class *subclass_list; - struct objc_class *sibling_class; - } - struct objc_protocol_list *protocols; - if (flag_next_runtime) - void *sel_id; - void *gc_object_type; - }; */ - -static tree -build_shared_structure_initializer (tree type, tree isa, tree super, - tree name, tree size, int status, - tree dispatch_table, tree ivar_list, - /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - tree protocol_list, tree objc_class_ext) -{ - tree initlist = NULL_TREE, expr; - - /* isa = */ - initlist = tree_cons (NULL_TREE, isa, initlist); - - /* super_class = */ - initlist = tree_cons (NULL_TREE, super, initlist); - - /* name = */ - initlist = tree_cons (NULL_TREE, default_conversion (name), initlist); - - /* version = */ - initlist = tree_cons (NULL_TREE, build_int_cst (long_integer_type_node, 0), - initlist); - - /* info = */ - initlist = tree_cons (NULL_TREE, - build_int_cst (long_integer_type_node, status), - initlist); - - /* instance_size = */ - initlist = tree_cons (NULL_TREE, convert (long_integer_type_node, size), - initlist); - - /* objc_ivar_list = */ - if (!ivar_list) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_ivar_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_ivar_list_ptr, - build_unary_op (ADDR_EXPR, ivar_list, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* objc_method_list = */ - if (!dispatch_table) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_list_ptr, - build_unary_op (ADDR_EXPR, dispatch_table, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* APPLE LOCAL begin radar 6285794 */ - if (flag_next_runtime) - /* method_cache = */ - initlist = tree_cons (NULL_TREE, - convert (build_pointer_type - (xref_tag (RECORD_TYPE, - get_identifier - ("objc_cache"))), - integer_zero_node), - initlist); - else - { - tree null_objc_class_ptr = - convert (build_pointer_type (objc_class_template), - integer_zero_node); - - /* dtable = */ - initlist = tree_cons (NULL_TREE, - convert (build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier - ("sarray"))), - integer_zero_node), - initlist); - - /* subclass_list = */ - initlist = tree_cons (NULL_TREE, null_objc_class_ptr, initlist); - - /* sibling_class = */ - initlist = tree_cons (NULL_TREE, null_objc_class_ptr, initlist); - } - /* APPLE LOCAL end radar 6285794 */ - - /* protocol_list = */ - /* APPLE LOCAL begin radar 6285794 */ - { - tree objc_protocol_ptr_ptr = - build_pointer_type (build_pointer_type (objc_protocol_template)); - - if (!protocol_list) - initlist = tree_cons (NULL_TREE, - convert (objc_protocol_ptr_ptr, - integer_zero_node), - initlist); - else - { - expr = convert (objc_protocol_ptr_ptr, - build_unary_op (ADDR_EXPR, protocol_list, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - /* APPLE LOCAL end radar 6285794 */ - - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - if (flag_next_runtime) - { - /* const char *ivar_layout; */ - if (IS_CLS_META (status)) /* Meta Class ? */ - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (string_type_node, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - tree ivar_layout = objc_build_ivar_layout (true); - if (!ivar_layout) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (string_type_node, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - initlist = tree_cons (NULL_TREE, ivar_layout, initlist); - } - /* struct _objc_class_ext *ext; */ - /* APPLE LOCAL begin radar 6285794 */ - if (!objc_class_ext_template) - build_objc_class_ext_template (); - - { - tree objc_class_ext_ptr = - build_pointer_type (objc_class_ext_template); - - if (!objc_class_ext) - initlist = tree_cons (NULL_TREE, - convert (objc_class_ext_ptr, - integer_zero_node), - initlist); - else - { - expr = convert (objc_class_ext_ptr, - build_unary_op (ADDR_EXPR, objc_class_ext, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - /* APPLE LOCAL end radar 6285794 */ - } - else - /* gc_object_type = NULL */ - /* APPLE LOCAL radar 6285794 - NUL pointer */ - initlist = tree_cons (NULL_TREE, null_pointer_node, initlist); - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - - return objc_build_constructor (type, nreverse (initlist)); -} - -/* Retrieve category interface CAT_NAME (if any) associated with CLASS. */ - -static inline tree -lookup_category (tree class, tree cat_name) -{ - tree category = CLASS_CATEGORY_LIST (class); - - while (category && CLASS_SUPER_NAME (category) != cat_name) - category = CLASS_CATEGORY_LIST (category); - return category; -} - -/* static struct objc_category _OBJC_CATEGORY_<name> = { ... }; */ - -static void -/* APPLE LOCAL radar 4349690 */ -generate_category (tree cat, struct imp_entry *impent) -{ - tree decl; - tree initlist, cat_name_expr, class_name_expr; - tree protocol_decl, category; - - add_class_reference (CLASS_NAME (cat)); - cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names); - - class_name_expr = add_objc_string (CLASS_NAME (cat), class_names); - - category = lookup_category (implementation_template, - CLASS_SUPER_NAME (cat)); - - if (category && CLASS_PROTOCOL_LIST (category)) - { - generate_protocol_references (CLASS_PROTOCOL_LIST (category)); - protocol_decl = generate_protocol_list (category); - } - else - protocol_decl = 0; - - /* APPLE LOCAL radar 4349690 */ - decl = update_var_decl(impent->class_decl); - - initlist = build_category_initializer (TREE_TYPE (decl), - cat_name_expr, class_name_expr, - UOBJC_INSTANCE_METHODS_decl, - UOBJC_CLASS_METHODS_decl, -/* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - protocol_decl, -/* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - false, UOBJC_V2_PROPERTY_decl); - - finish_var_decl (decl, initlist); -} -/* APPLE LOCAL end C* property metadata (Radar 4498373) */ -/* APPLE LOCAL begin ObjC new abi */ - -/* APPLE LOCAL begin radar 4698856 */ -/* Routine to build UOBJC_V2_CACHE_decl and UOBJC_V2_VTABLE_decl, - if need be. -*/ - -static void -build_empty_cache_vtable_vars (void) -{ - UOBJC_V2_CACHE_decl = lookup_name (get_identifier ("_objc_empty_cache")); - if (!UOBJC_V2_CACHE_decl) - UOBJC_V2_CACHE_decl = create_extern_decl (ptr_type_node, "_objc_empty_cache"); - UOBJC_V2_VTABLE_decl = lookup_name (get_identifier ("_objc_empty_vtable")); - if (!UOBJC_V2_VTABLE_decl) - UOBJC_V2_VTABLE_decl = create_extern_decl (objc_imp_type, "_objc_empty_vtable"); -} -/* APPLE LOCAL end radar 4698856 */ - -/* static struct category_t _OBJC_CATEGORY_$_<name> = { ... }; */ - -static void -generate_v2_category (tree cat, struct imp_entry *impent) -{ - tree decl; - tree initlist, cat_name_expr, class_name_expr; - tree protocol_decl, category; - - cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names); - - (void)objc_v2_get_class_reference (CLASS_NAME (cat)); - - class_name_expr = create_extern_decl (objc_v2_class_template, - objc_build_internal_classname ( - CLASS_NAME (cat), false)); - class_name_expr = build_fold_addr_expr (class_name_expr); - - category = lookup_category (implementation_template, - CLASS_SUPER_NAME (cat)); - - if (category && CLASS_PROTOCOL_LIST (category)) - { - /* APPLE LOCAL radar 4695109 */ - generate_v2_protocol_references (CLASS_PROTOCOL_LIST (category)); - protocol_decl = generate_v2_protocol_list (category); - } - else - protocol_decl = 0; - - decl = update_var_decl(impent->class_v2_decl); - - initlist = build_category_initializer (TREE_TYPE (decl), - cat_name_expr, class_name_expr, - UOBJC_V2_INSTANCE_METHODS_decl, - UOBJC_V2_CLASS_METHODS_decl, - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - protocol_decl, - true, UOBJC_V2_PROPERTY_decl); - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - - finish_var_decl (decl, initlist); - - /* Add to list of pointers in __category_list section */ - objc_add_to_category_list_chain (decl); - if (CLASS_OR_CATEGORY_HAS_LOAD_IMPL (objc_implementation_context) != NULL_TREE) - objc_add_to_nonlazy_category_list_chain (decl); -} - -/* Build the name for object of type struct class_ro_t */ - -static const char * -newabi_append_ro (const char *name) -{ - char *dollar; - char *p; - static char string[BUFSIZE]; - dollar = strchr (name, '$'); - gcc_assert (dollar); - p = string; - /* APPLE LOCAL radar 6064186 */ - *p = 'l'; p++; - *p = '_'; p++; - strncpy (p, name, (int)(dollar - name)); - p += (int)(dollar - name); - sprintf (p, "RO_%s", dollar); - return string; -} - -/* Routine to build initializer list to initialize objects of type struct class_t; */ - -static tree -build_class_t_initializer (tree type, tree isa, tree superclass, tree ro, tree cache, tree vtable) -{ - tree initlist = NULL_TREE; - - /* isa */ - initlist = tree_cons (NULL_TREE, isa, initlist); - - /* superclass */ - initlist = tree_cons (NULL_TREE, superclass, initlist); - - /* cache */ - if (cache) - initlist = tree_cons (NULL_TREE, cache, initlist); - else - /* APPLE LOCAL radar 6285794 - NUL pointer */ - initlist = tree_cons (NULL_TREE, null_pointer_node, initlist); - - /* vtable */ - if (vtable) - initlist = tree_cons (NULL_TREE, vtable, initlist); - else - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (build_pointer_type (objc_imp_type), - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - - /* ro */ - initlist = tree_cons (NULL_TREE, ro, initlist); - - return objc_build_constructor (type, nreverse (initlist)); -} - -static tree -build_class_ro_t_initializer (tree type, tree name, - unsigned int flags, unsigned int instanceStart, unsigned int instanceSize, - /* APPLE LOCAL radar 4695101 */ - tree ivarLayout, - tree baseMethods, tree baseProtocols, tree ivars, - /* APPLE LOCAL radar 4695101 */ - tree weakIvarLayout, - tree property_list) -{ - tree initlist = NULL_TREE, expr; - - /* flags */ - initlist = tree_cons (NULL_TREE, - build_int_cst (integer_type_node, flags), - initlist); - - /* instanceStart */ - initlist = tree_cons (NULL_TREE, - build_int_cst (integer_type_node, instanceStart), - initlist); - - /* instanceSize */ - initlist = tree_cons (NULL_TREE, - build_int_cst (integer_type_node, instanceSize), - initlist); - - /* reserved */ - if (TARGET_64BIT) - initlist = tree_cons (NULL_TREE, - build_int_cst (integer_type_node, 0), - initlist); - - /* APPLE LOCAL begin radar 4695101 */ - /* ivarLayout */ - if (!ivarLayout) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (string_type_node, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - initlist = tree_cons (NULL_TREE, ivarLayout, initlist); - /* APPLE LOCAL end radar 4695101 */ - - /* name */ - initlist = tree_cons (NULL_TREE, default_conversion (name), initlist); - - /* baseMethods */ - if (!baseMethods) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_method_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_method_list_ptr, - build_unary_op (ADDR_EXPR, baseMethods, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* baseProtocols */ - /* APPLE LOCAL begin radar 6285794 */ - { - tree protocol_list_t_p = - build_pointer_type (xref_tag (RECORD_TYPE, - get_identifier (UTAG_V2_PROTOCOL_LIST))); - - if (!baseProtocols) - initlist = tree_cons (NULL_TREE, - convert (protocol_list_t_p, - integer_zero_node), - initlist); - else - { - expr = convert (protocol_list_t_p, - build_unary_op (ADDR_EXPR, baseProtocols, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - } - /* APPLE LOCAL end radar 6285794 */ - - /* ivars */ - if (!ivars) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_v2_ivar_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_v2_ivar_list_ptr, - build_unary_op (ADDR_EXPR, ivars, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - - /* APPLE LOCAL begin radar 4695101 */ - /* weakIvarLayout */ - if (!weakIvarLayout) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (string_type_node, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - initlist = tree_cons (NULL_TREE, weakIvarLayout, initlist); - /* APPLE LOCAL end radar 4695101 */ - - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - /* property list */ - if (!property_list) - /* APPLE LOCAL begin radar 6285794 */ - initlist = tree_cons (NULL_TREE, - convert (objc_prop_list_ptr, - integer_zero_node), - initlist); - /* APPLE LOCAL end radar 6285794 */ - else - { - expr = convert (objc_prop_list_ptr, - build_unary_op (ADDR_EXPR, property_list, 0)); - initlist = tree_cons (NULL_TREE, expr, initlist); - } - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - return objc_build_constructor (type, nreverse (initlist)); -} - -/* APPLE LOCAL begin radar 4533974 - ObjC new protocol - radar 4695109 */ -/* Add the local protocol meta-data declaration to the list which later on ends up - in the __protocol_list section. */ - -static void -/* APPLE LOCAL begin radar 6351990 */ -objc_add_to_protocol_list_chain (tree protocol_interface_decl, tree protocol_decl) -{ - tree *chain; - for (chain = &protocol_list_chain; *chain; chain = &TREE_CHAIN (*chain)) - ; - *chain = tree_cons (protocol_interface_decl, protocol_decl, NULL_TREE); -} - -/* Build the __protocol_list section table containing address of all generate protocol_t - meta-data. */ - -static void -build_protocol_list_address_table (void) -{ - tree chain; - tree list_chain = protocol_list_chain; - char *string = NULL; - unsigned int buf_size = 0; - - for (chain = list_chain; chain; chain = TREE_CHAIN (chain)) - { - tree decl = TREE_PURPOSE (chain); - tree expr = TREE_VALUE (chain); - gcc_assert (decl && TREE_CODE (decl) == PROTOCOL_INTERFACE_TYPE); - if ((strlen ("l_OBJC_LABEL_PROTOCOL_$_") + strlen (IDENTIFIER_POINTER (PROTOCOL_NAME (decl))) + 1) > buf_size) - { - if (!buf_size) - buf_size = BUFSIZE; - else - buf_size = strlen ("l_OBJC_LABEL_PROTOCOL_$_") + strlen (IDENTIFIER_POINTER (PROTOCOL_NAME (decl))) + 1; - string = (char *)alloca (buf_size); - } - sprintf (string, "l_OBJC_LABEL_PROTOCOL_$_%s", IDENTIFIER_POINTER (PROTOCOL_NAME (decl))); - decl = create_hidden_decl (objc_protocol_type, string); - DECL_WEAK (decl) = 1; - set_user_assembler_name (decl, string); - expr = convert (objc_protocol_type, build_fold_addr_expr (expr)); - /* APPLE LOCAL radar 4561192 */ - objc_set_alignment_attribute (decl, objc_protocol_type); - finish_var_decl (decl, expr); - } -} -/* APPLE LOCAL end radar 6351990 */ - -/* Build decl = initializer; for each protocol referenced in @protocol(MyProtole) expression. */ - -static void -build_protocollist_translation_table (void) -{ - tree chain; - static char string[BUFSIZE]; - - for (chain = protocollist_ref_chain; chain; chain = TREE_CHAIN (chain)) - { - tree expr = TREE_VALUE (chain); - tree decl = TREE_PURPOSE (chain); - gcc_assert (TREE_CODE (expr) == PROTOCOL_INTERFACE_TYPE); - /* APPLE LOCAL begin radar 4695109 */ - /* APPLE LOCAL begin radar 6255913 */ - if (flag_objc_abi == 2) - { - sprintf (string, "l_OBJC_PROTOCOL_$_%s", - IDENTIFIER_POINTER (PROTOCOL_NAME (expr))); - expr = start_var_decl (objc_v2_protocol_template, string); - set_user_assembler_name (expr, string); - } - /* APPLE LOCAL end radar 6255913 */ - else - { - sprintf (string, "_OBJC_PROTOCOL_$_%s", - IDENTIFIER_POINTER (PROTOCOL_NAME (expr))); - expr = start_var_decl (objc_v2_protocol_template, string); - } - /* APPLE LOCAL end radar 4695109 */ - expr = convert (objc_protocol_type, build_fold_addr_expr (expr)); - finish_var_decl (decl, expr); - } -} - -/* This routine builds the protocol_reference_chain for each protocol name used - @protocol(MyProtocol) expression. IDENT is current protocol name. */ - -static tree -objc_v2_get_protocol_reference (tree ident) -{ - tree *chain; - tree decl; - - for (chain = &protocollist_ref_chain; *chain; chain = &TREE_CHAIN (*chain)) - if (TREE_VALUE (*chain) == ident) - { - if (! TREE_PURPOSE (*chain)) - /* APPLE LOCAL radar 6351990 */ - TREE_PURPOSE (*chain) = build_protocollist_reference_decl (ident); - - return TREE_PURPOSE (*chain); - } - - /* APPLE LOCAL radar 6351990 */ - decl = build_protocollist_reference_decl (ident); - *chain = tree_cons (decl, ident, NULL_TREE); - return decl; -} - -/* This routine creates a static variable used to implement @protocol(MyProtocol) - expression. This variable will be initialized to global protocol_t meta-data - pointer. */ - -/* APPLE LOCAL begin radar 6351990 */ -static tree -build_protocollist_reference_decl (tree protocol) -{ - tree decl; - tree protocol_ident = PROTOCOL_NAME (protocol); - char *buf = (char *)alloca (strlen ("l_OBJC_PROTOCOL_REFERENCE_$_") + - IDENTIFIER_LENGTH (protocol_ident) + 1); - - sprintf (buf, "l_OBJC_PROTOCOL_REFERENCE_$_%s", IDENTIFIER_POINTER (protocol_ident)); - decl = create_hidden_decl (objc_protocol_type, buf); - DECL_WEAK (decl) = 1; - set_user_assembler_name (decl, buf); - - return decl; -} -/* APPLE LOCAL end radar 6351990 */ -/* APPLE LOCAL end radar 4533974 - ObjC new protocol */ - -/* Add the global class meta-data declaration to the list which later on ends up - in the __nonlazy_class section. */ - -static void -objc_add_to_nonlazy_class_list_chain (tree global_class_decl) -{ - tree *chain; - for (chain = &nonlazy_class_list_chain; *chain; chain = &TREE_CHAIN (*chain)) - ; - *chain = tree_cons (NULL_TREE, global_class_decl, NULL_TREE); -} - -/* Add the global class meta-data declaration to the list which later on ends up - in the __class_list section. */ - -static void -objc_add_to_class_list_chain (tree global_class_decl) -{ - tree *chain; - for (chain = &class_list_chain; *chain; chain = &TREE_CHAIN (*chain)) - ; - *chain = tree_cons (NULL_TREE, global_class_decl, NULL_TREE); -} - -/* Add the category meta-data declaration to the list which later on ends up - in the __nonlazy_category section. */ - -static void -objc_add_to_nonlazy_category_list_chain (tree global_category_decl) -{ - tree *chain; - for (chain = &nonlazy_category_list_chain; *chain; chain = &TREE_CHAIN (*chain)) - ; - *chain = tree_cons (NULL_TREE, global_category_decl, NULL_TREE); -} - -/* Add the category meta-data declaration to the list which later on ends up - in the __category_list section. */ - -static void -objc_add_to_category_list_chain (tree global_category_decl) -{ - tree *chain; - for (chain = &category_list_chain; *chain; chain = &TREE_CHAIN (*chain)) - ; - *chain = tree_cons (NULL_TREE, global_category_decl, NULL_TREE); -} - -/* Routine to build object of struct class_ro_t { ... }; */ - -static void -generate_v2_shared_structures (int cls_flags) -{ - tree sc_spec, decl_specs, decl; - tree name_expr, root_expr = NULL_TREE; - tree my_super_id = NULL_TREE; - tree initlist, protocol_decl; - unsigned int instanceStart, instanceSize; - /* APPLE LOCAL begin radar 4695101 */ - tree ivarLayout; - tree weakIvarLayout; - /* APPLE LOCAL end radar 4695101 */ - tree metaclass_decl, class_decl; - tree field, firstIvar; - tree class_superclass_expr, metaclass_superclass_expr; - unsigned int flags = 0x1; /* Start with CLS_META */ - /* APPLE LOCAL radar 6064186 */ - const char* ref_name; - /* APPLE LOCAL begin radar 4705298, 4843145 */ - class_decl = objc_create_global_decl_for_class ( - objc_v2_class_template, - IDENTIFIER_POINTER (DECL_NAME (UOBJC_V2_CLASS_decl)), - implementation_template); - metaclass_decl = objc_create_global_decl_for_class ( - objc_v2_class_template, - IDENTIFIER_POINTER (DECL_NAME (UOBJC_V2_METACLASS_decl)), - implementation_template); - - if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN) - flags |= OBJC2_CLS_HIDDEN; - /* APPLE LOCAL end radar 4705298, 4843145*/ - - /* Generation of data for meta class */ - my_super_id = CLASS_SUPER_NAME (implementation_template); - if (my_super_id) - { - /* compute reference to root's name. For meta class, "isa" is reference - to root class name. */ - tree sav; - tree my_root_id = my_super_id; - tree my_root_int; - tree interface; - do - { - my_root_int = lookup_interface (my_root_id); - - if (my_root_int && CLASS_SUPER_NAME (my_root_int)) - my_root_id = CLASS_SUPER_NAME (my_root_int); - else - break; - } - while (1); - sav = objc_implementation_context; - objc_implementation_context = my_root_int; - /* APPLE LOCAL radar 5202926 */ - root_expr = build_metadata_decl ("OBJC_METACLASS_$", objc_v2_class_template, true); - root_expr = build_fold_addr_expr (root_expr); - - /* Install class `isa' and `super' pointers at runtime. */ - interface = lookup_interface (my_super_id); - gcc_assert (interface); - objc_implementation_context = interface; - /* Note! I had to remove '_' prefix to 'OBJC' to make this an extern symbol. Darwin's - back-end, recognizes '_OBJC_' prefix and prepends an 'L' in front of this. Darwin - assembler treats names starting with 'L_' as local symbols. */ - /* APPLE LOCAL radar 5202926 */ - class_superclass_expr = build_metadata_decl ("OBJC_CLASS_$", objc_v2_class_template, true); - class_superclass_expr = build_fold_addr_expr (class_superclass_expr); - /* APPLE LOCAL radar 5202926 */ - metaclass_superclass_expr = build_metadata_decl ("OBJC_METACLASS_$", objc_v2_class_template, true); - metaclass_superclass_expr = build_fold_addr_expr (metaclass_superclass_expr); - objc_implementation_context = sav; - } - else - { - /* root class. */ - root_expr = build_unary_op (ADDR_EXPR, metaclass_decl, 0); - metaclass_superclass_expr = build_unary_op (ADDR_EXPR, class_decl, 0); - /* APPLE LOCAL begin radar 6285794 */ - class_superclass_expr = convert (build_pointer_type (objc_v2_class_template), - integer_zero_node); - /* APPLE LOCAL end radar 6285794 */ - flags |= 0x2; /* CLS_ROOT: it is also a root meta class */ - } - - - if (CLASS_PROTOCOL_LIST (implementation_template)) - { - /* APPLE LOCAL begin radar 4695109 */ - generate_v2_protocol_references - (CLASS_PROTOCOL_LIST (implementation_template)); - /* APPLE LOCAL end radar 4695109 */ - protocol_decl = generate_v2_protocol_list (implementation_template); - } - else - protocol_decl = 0; - - /* static struct class_ro_t _OBJC_METACLASS_Foo = { ... }; */ - - /* APPLE LOCAL begin radar 4702359 */ - instanceStart = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template)); - instanceSize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template)); - /* APPLE LOCAL end radar 4702359 */ - - name_expr = add_objc_string (CLASS_NAME (implementation_template), - class_names); - - sc_spec = build_tree_list (NULL_TREE, ridpointers[(int) RID_STATIC]); - decl_specs = tree_cons (NULL_TREE, objc_v2_class_ro_template, sc_spec); - - /* APPLE LOCAL begin radar 6064186 */ - ref_name = newabi_append_ro ( - IDENTIFIER_POINTER (DECL_NAME (UOBJC_V2_METACLASS_decl))); - decl = start_var_decl (objc_v2_class_ro_template, ref_name); - set_user_assembler_name (decl, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - initlist = build_class_ro_t_initializer - (TREE_TYPE (decl), - name_expr, - (flags | cls_flags), instanceStart, instanceSize, - /* APPLE LOCAL radar 4695101 */ - NULL_TREE, UOBJC_V2_CLASS_METHODS_decl, protocol_decl, - UOBJC_V2_CLASS_VARIABLES_decl, - /* APPLE LOCAL radar 4695101 */ - NULL_TREE, - NULL_TREE); - - finish_var_decl (decl, initlist); - - /* APPLE LOCAL radar 4698856*/ - build_empty_cache_vtable_vars (); - - /* static struct class_t _OBJC_METACLASS_Foo = { ... }; */ - initlist = build_class_t_initializer (TREE_TYPE (metaclass_decl), - root_expr, - metaclass_superclass_expr, - build_fold_addr_expr (decl), - build_fold_addr_expr (UOBJC_V2_CACHE_decl), - build_fold_addr_expr (UOBJC_V2_VTABLE_decl)); - finish_var_decl (metaclass_decl, initlist); - - /* Generation of data for the class */ - - flags = 0x0; /* CLS */ - /* APPLE LOCAL begin radar 4705298, 4843145 */ - if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN) - flags |= OBJC2_CLS_HIDDEN; - /* APPLE LOCAL end radar 4705298, 48431458 */ - if (!my_super_id) - flags |= 0x2; /* CLS_ROOT: this is a root class */ - /* APPLE LOCAL begin radar 5008110 */ - if (objc2_objc_exception_attr (implementation_template)) - flags |= 0x20; - /* APPLE LOCAL end radar 5008110 */ - - /* Compute instanceStart */ - gcc_assert (CLASS_TYPE (implementation_template)); - field = TYPE_FIELDS (CLASS_TYPE (implementation_template)); - /* APPLE LOCAL begin radar 5333233 */ - /* If class has no ivar, 'field' remains the super class hidden field. */ - if (UOBJC_V2_INSTANCE_VARIABLES_decl - && my_super_id && field && TREE_CHAIN (field)) - /* APPLE LOCAL end radar 5333233 */ - field = TREE_CHAIN (field); - - firstIvar = field; - - while (firstIvar && TREE_CODE (firstIvar) != FIELD_DECL) - firstIvar = TREE_CHAIN (firstIvar); - gcc_assert (UOBJC_V2_INSTANCE_VARIABLES_decl? (firstIvar != NULL_TREE): true); - - /* Compute instanceSize */ - while (field && TREE_CHAIN (field) - && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) - field = TREE_CHAIN (field); - - if (field && TREE_CODE (field) == FIELD_DECL) - instanceSize = int_byte_position (field) * BITS_PER_UNIT + tree_low_cst (DECL_SIZE (field), 0); - else - instanceSize = 0; - instanceSize /= BITS_PER_UNIT; - - /* If the class has no ivars, instanceStart should be set to the superclass's - instanceSize */ - /* APPLE LOCAL begin ARM signedness mismatch */ - instanceStart = UOBJC_V2_INSTANCE_VARIABLES_decl - ? (unsigned int) int_byte_position (firstIvar) - : instanceSize; - /* APPLE LOCAL end ARM signedness mismatch */ - - /* APPLE LOCAL begin radar 6064186 */ - ref_name = newabi_append_ro (IDENTIFIER_POINTER (DECL_NAME (UOBJC_V2_CLASS_decl))); - decl = start_var_decl (objc_v2_class_ro_template, ref_name); - set_user_assembler_name (decl, ref_name); - /* APPLE LOCAL end radar 6064186 */ - - /* APPLE LOCAL begin radar 4695101 */ - ivarLayout = objc_build_ivar_layout (true); - weakIvarLayout = objc_build_ivar_layout (false); - /* APPLE LOCAL end radar 4695101 */ - - initlist = build_class_ro_t_initializer (TREE_TYPE (decl), - name_expr, - (flags | cls_flags), instanceStart, instanceSize, - ivarLayout, UOBJC_V2_INSTANCE_METHODS_decl, protocol_decl, - UOBJC_V2_INSTANCE_VARIABLES_decl, - /* APPLE LOCAL radar 4695101 */ - weakIvarLayout, - UOBJC_V2_PROPERTY_decl); - finish_var_decl (decl, initlist); - - /* static struct class_t _OBJC_ACLASS_Foo = { ... }; */ - initlist = build_class_t_initializer (TREE_TYPE (class_decl), - build_fold_addr_expr (metaclass_decl), - class_superclass_expr, - build_fold_addr_expr (decl), - build_fold_addr_expr (UOBJC_V2_CACHE_decl), - build_fold_addr_expr (UOBJC_V2_VTABLE_decl)); - - finish_var_decl (class_decl, initlist); - objc_add_to_class_list_chain (class_decl); - if (CLASS_OR_CATEGORY_HAS_LOAD_IMPL (objc_implementation_context) != NULL_TREE) - objc_add_to_nonlazy_class_list_chain (class_decl); - /* APPLE LOCAL begin radar 5008110 */ - if (flag_objc_zerocost_exceptions && (flags & 0x20)) - objc2_build_ehtype_var_decl (CLASS_NAME (implementation_template), - false, false); - /* APPLE LOCAL end radar 5008110 */ -} -/* APPLE LOCAL end ObjC new abi */ - -/* static struct objc_class _OBJC_METACLASS_Foo={ ... }; - static struct objc_class _OBJC_CLASS_Foo={ ... }; */ - -static void -generate_shared_structures (int cls_flags) -{ - tree sc_spec, decl_specs, decl; - tree name_expr, super_expr, root_expr; - tree my_root_id = NULL_TREE, my_super_id = NULL_TREE; - tree cast_type, initlist, protocol_decl; - /* APPLE LOCAL begin radar 5142207 */ - const char *visibility = objc_class_visibility (implementation_template); - int hidden_flag = (visibility && strcmp (visibility, "hidden") == 0) ? CLS_HIDDEN : 0; - /* APPLE LOCAL end radar 5142207 */ - - my_super_id = CLASS_SUPER_NAME (implementation_template); - if (my_super_id) - { - add_class_reference (my_super_id); - - /* Compute "my_root_id" - this is required for code generation. - the "isa" for all meta class structures points to the root of - the inheritance hierarchy (e.g. "__Object")... */ - my_root_id = my_super_id; - do - { - tree my_root_int = lookup_interface (my_root_id); - - if (my_root_int && CLASS_SUPER_NAME (my_root_int)) - my_root_id = CLASS_SUPER_NAME (my_root_int); - else - break; - } - while (1); - } - else - /* No super class. */ - my_root_id = CLASS_NAME (implementation_template); - - cast_type = build_pointer_type (objc_class_template); - name_expr = add_objc_string (CLASS_NAME (implementation_template), - class_names); - - /* Install class `isa' and `super' pointers at runtime. */ - if (my_super_id) - { - super_expr = add_objc_string (my_super_id, class_names); - super_expr = build_c_cast (cast_type, super_expr); /* cast! */ - } - else - /* APPLE LOCAL begin radar 6285794 */ - { - super_expr = convert (string_type_node, - integer_zero_node); - super_expr = build_c_cast (cast_type, super_expr); /* cast! */ - } - /* APPLE LOCAL end radar 6285794 */ - - root_expr = add_objc_string (my_root_id, class_names); - root_expr = build_c_cast (cast_type, root_expr); /* cast! */ - - if (CLASS_PROTOCOL_LIST (implementation_template)) - { - generate_protocol_references - (CLASS_PROTOCOL_LIST (implementation_template)); - protocol_decl = generate_protocol_list (implementation_template); - } - else - protocol_decl = 0; - - /* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */ - - sc_spec = build_tree_list (NULL_TREE, ridpointers[(int) RID_STATIC]); - decl_specs = tree_cons (NULL_TREE, objc_class_template, sc_spec); - - /* APPLE LOCAL begin radar 4349690 */ - decl = update_var_decl (UOBJC_METACLASS_decl); - /* APPLE LOCAL end radar 4349690 */ - - initlist - = build_shared_structure_initializer - (TREE_TYPE (decl), - root_expr, super_expr, name_expr, - convert (integer_type_node, TYPE_SIZE_UNIT (objc_class_template)), - /* APPLE LOCAL radar 5142207 */ - CLS_META | hidden_flag, - UOBJC_CLASS_METHODS_decl, - UOBJC_CLASS_VARIABLES_decl, - /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - protocol_decl, NULL_TREE); - - finish_var_decl (decl, initlist); - - /* static struct objc_class _OBJC_CLASS_Foo={ ... }; */ - - /* APPLE LOCAL begin radar 4349690 */ - decl = update_var_decl (UOBJC_CLASS_decl); - /* APPLE LOCAL end radar 4349690 */ - - initlist - = build_shared_structure_initializer - (TREE_TYPE (decl), - build_unary_op (ADDR_EXPR, UOBJC_METACLASS_decl, 0), - super_expr, name_expr, - convert (integer_type_node, - TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE - (implementation_template))), - /* APPLE LOCAL radar 5142207 */ - CLS_FACTORY | hidden_flag | cls_flags, - UOBJC_INSTANCE_METHODS_decl, - UOBJC_INSTANCE_VARIABLES_decl, -/* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - protocol_decl, UOBJC_CLASS_EXT_decl); - - finish_var_decl (decl, initlist); -} - - -static const char * -synth_id_with_class_suffix (const char *preamble, tree ctxt) -{ - static char string[BUFSIZE]; - - if (TREE_CODE (ctxt) == CLASS_IMPLEMENTATION_TYPE - || TREE_CODE (ctxt) == CLASS_INTERFACE_TYPE) - { - sprintf (string, "%s_%s", preamble, - IDENTIFIER_POINTER (CLASS_NAME (ctxt))); - } - else if (TREE_CODE (ctxt) == CATEGORY_IMPLEMENTATION_TYPE - || TREE_CODE (ctxt) == CATEGORY_INTERFACE_TYPE) - { - /* We have a category. */ - const char *const class_name - = IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)); - const char *const class_super_name - = IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)); - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2) - sprintf (string, "%s_%s_$_%s", preamble, class_name, class_super_name); - else - sprintf (string, "%s_%s_%s", preamble, class_name, class_super_name); - /* APPLE LOCAL end ObjC abi v2 */ - } - else if (TREE_CODE (ctxt) == PROTOCOL_INTERFACE_TYPE) - { - const char *protocol_name = IDENTIFIER_POINTER (PROTOCOL_NAME (ctxt)); - sprintf (string, "%s_%s", preamble, protocol_name); - } - else - abort (); - - return string; -} - -/* If type is empty or only type qualifiers are present, add default - type of id (otherwise grokdeclarator will default to int). */ - -static tree -adjust_type_for_id_default (tree type) -{ - if (!type) - type = make_node (TREE_LIST); - - if (!TREE_VALUE (type)) - TREE_VALUE (type) = objc_object_type; - else if (TREE_CODE (TREE_VALUE (type)) == RECORD_TYPE - && TYPED_OBJECT (TREE_VALUE (type))) - error ("can not use an object as parameter to a method"); - - return type; -} - -/* Usage: - keyworddecl: - // APPLE LOCAL radar 4157812 - selector ':' '(' typename ')' [attr-list] identifier - - Purpose: - Transform an Objective-C keyword argument into - the C equivalent parameter declarator. - - In: key_name, an "identifier_node" (optional). - arg_type, a "tree_list" (optional). - arg_name, an "identifier_node". - // APPLE LOCAL radar 4157812 - arg_attr, a "tree_list" (optional) - - Note: It would be really nice to strongly type the preceding - arguments in the function prototype; however, then I - could not use the "accessor" macros defined in "tree.h". - - Out: an instance of "keyword_decl". */ - -tree -/* APPLE LOCAL radar 4157812 */ -objc_build_keyword_decl (tree key_name, tree arg_type, tree arg_name, tree arg_attr) -{ - tree keyword_decl; - - /* If no type is specified, default to "id". */ - arg_type = adjust_type_for_id_default (arg_type); - - keyword_decl = make_node (KEYWORD_DECL); - - TREE_TYPE (keyword_decl) = arg_type; - KEYWORD_ARG_NAME (keyword_decl) = arg_name; - /* APPLE LOCAL radar 4157812 */ - KEYWORD_ARG_ATTRIBUTE (keyword_decl) = arg_attr; - KEYWORD_KEY_NAME (keyword_decl) = key_name; - - return keyword_decl; -} - -/* Given a chain of keyword_decl's, synthesize the full keyword selector. */ - -static tree -build_keyword_selector (tree selector) -{ - int len = 0; - tree key_chain, key_name; - char *buf; - - /* Scan the selector to see how much space we'll need. */ - for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain)) - { - if (TREE_CODE (selector) == KEYWORD_DECL) - key_name = KEYWORD_KEY_NAME (key_chain); - else if (TREE_CODE (selector) == TREE_LIST) - key_name = TREE_PURPOSE (key_chain); - else - abort (); - - if (key_name) - len += IDENTIFIER_LENGTH (key_name) + 1; - else - /* Just a ':' arg. */ - len++; - } - - buf = (char *) alloca (len + 1); - /* Start the buffer out as an empty string. */ - buf[0] = '\0'; - - for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain)) - { - if (TREE_CODE (selector) == KEYWORD_DECL) - key_name = KEYWORD_KEY_NAME (key_chain); - else if (TREE_CODE (selector) == TREE_LIST) - { - key_name = TREE_PURPOSE (key_chain); - /* The keyword decl chain will later be used as a function argument - chain. Unhook the selector itself so as to not confuse other - parts of the compiler. */ - TREE_PURPOSE (key_chain) = NULL_TREE; - } - else - abort (); - - if (key_name) - strcat (buf, IDENTIFIER_POINTER (key_name)); - strcat (buf, ":"); - } - - return get_identifier (buf); -} - -/* Used for declarations and definitions. */ - -static tree -build_method_decl (enum tree_code code, tree ret_type, tree selector, - tree add_args, bool ellipsis) -{ - tree method_decl; - - /* If no type is specified, default to "id". */ - ret_type = adjust_type_for_id_default (ret_type); - - method_decl = make_node (code); - TREE_TYPE (method_decl) = ret_type; - - /* If we have a keyword selector, create an identifier_node that - represents the full selector name (`:' included)... */ - if (TREE_CODE (selector) == KEYWORD_DECL) - { - METHOD_SEL_NAME (method_decl) = build_keyword_selector (selector); - METHOD_SEL_ARGS (method_decl) = selector; - METHOD_ADD_ARGS (method_decl) = add_args; - METHOD_ADD_ARGS_ELLIPSIS_P (method_decl) = ellipsis; - } - else - { - METHOD_SEL_NAME (method_decl) = selector; - METHOD_SEL_ARGS (method_decl) = NULL_TREE; - METHOD_ADD_ARGS (method_decl) = NULL_TREE; - } - - return method_decl; -} - -#define METHOD_DEF 0 -#define METHOD_REF 1 - -/* APPLE LOCAL begin radar 3803157 - objc attribute */ -/* APPLE LOCAL begin radar 4529765 */ -/* This routine is called for a "format" attribute. It adds the number of - hidden argument ('2') to the format's 2nd and 3rd argument to compensate - for these two arguments. This is to make rest of the "format" attribute - processing done in the middle-end to work seemlessly. */ - -static void -objc_delta_format_args (tree format) -{ - tree format_num_expr, first_arg_num_expr; - int val; - tree args = TREE_VALUE (format); - gcc_assert (TREE_CHAIN (args) && TREE_CHAIN (TREE_CHAIN (args))); - format_num_expr = TREE_VALUE (TREE_CHAIN (args)); - first_arg_num_expr = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (args))); - if (format_num_expr && TREE_CODE (format_num_expr) == INTEGER_CST) - { - val = TREE_INT_CST_LOW (format_num_expr); - TREE_VALUE (TREE_CHAIN (args)) = build_int_cst (NULL_TREE, val+2); - } - if (first_arg_num_expr && TREE_CODE (first_arg_num_expr) == INTEGER_CST) - { - val = TREE_INT_CST_LOW (first_arg_num_expr); - /* APPLE LOCAL begin radar 6157135 */ - if (val != 0) - TREE_VALUE (TREE_CHAIN (TREE_CHAIN (args))) = build_int_cst (NULL_TREE, val+2); - /* APPLE LOCAL end radar 6157135 */ - } -} - -/* This routine recognizes objc legal attributes. In case of "format" - attribute, it calls objc_delta_format_args to compensate for hidden - argument objc passes to its messaging call. */ -static bool -objc_any_recognized_attribute (tree attributes) -{ - tree chain; - bool res = false; - for (chain = attributes; chain; chain = TREE_CHAIN (chain)) - { - if (is_attribute_p ("format", TREE_PURPOSE (chain))) - { - objc_delta_format_args (chain); - res = true; - } - else if (is_attribute_p ("sentinel", TREE_PURPOSE (chain))) - res = true; - } - return res; -} -/* APPLE LOCAL end radar 4529765 */ -/* This routine processes objective-c method attributes. */ - -static void -objc_decl_method_attributes (tree *node, tree attributes, int flags) -{ - /* APPLE LOCAL radar 4529765 */ - if (objc_any_recognized_attribute (attributes)) - { - /* hackery to make an obj method look like a function type. */ - tree rettype = TREE_TYPE (*node); - TREE_TYPE (*node) = build_function_type (TREE_VALUE (rettype), - /* APPLE LOCAL radar 6307941 */ - get_arg_type_list (METHOD_SEL_NAME (*node), - *node, METHOD_REF, 0)); - decl_attributes (node, attributes, flags); - METHOD_TYPE_ATTRIBUTES (*node) = TYPE_ATTRIBUTES (TREE_TYPE (*node)); - TREE_TYPE (*node) = rettype; - } - else - decl_attributes (node, attributes, flags); -} -/* APPLE LOCAL end radar 3803157 - objc attribute */ - -/* Used by `build_objc_method_call' and `comp_proto_with_proto'. Return - an argument list for method METH. CONTEXT is either METHOD_DEF or - METHOD_REF, saying whether we are trying to define a method or call - one. SUPERFLAG says this is for a send to super; this makes a - difference for the NeXT calling sequence in which the lookup and - the method call are done together. If METH is null, user-defined - arguments (i.e., beyond self and _cmd) shall be represented by `...'. */ - -static tree -/* APPLE LOCAL radar 6307941 */ -get_arg_type_list (tree sel_name, tree meth, int context, int superflag) -{ - tree arglist, akey; - - /* Receiver type. */ - if (flag_next_runtime && superflag) - arglist = build_tree_list (NULL_TREE, objc_super_type); - else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL) - arglist = build_tree_list (NULL_TREE, objc_instance_type); - else - arglist = build_tree_list (NULL_TREE, objc_object_type); - - /* Selector type - will eventually change to `int'. */ - /* APPLE LOCAL begin ObjC new abi */ - chainon (arglist, build_tree_list (NULL_TREE, flag_objc_abi == 2 - /* APPLE LOCAL ARM hybrid objc-2.0 - radar 6307941 */ - && !objc_legacy_dispatched_selector_p (sel_name) - ? (superflag - ? objc_v2_super_selector_type - : objc_v2_selector_type) - : objc_selector_type)); - /* APPLE LOCAL end ObjC new abi */ - - /* No actual method prototype given -- assume that remaining arguments - are `...'. */ - if (!meth) - return arglist; - - /* Build a list of argument types. */ - for (akey = METHOD_SEL_ARGS (meth); akey; akey = TREE_CHAIN (akey)) - { - tree arg_type = TREE_VALUE (TREE_TYPE (akey)); - - /* APPLE LOCAL begin 4209854 */ - /* Decay argument types for the underlying C function as appropriate. */ - arg_type = objc_decay_parm_type (arg_type); - /* APPLE LOCAL end 4209854 */ - - chainon (arglist, build_tree_list (NULL_TREE, arg_type)); - } - - if (METHOD_ADD_ARGS (meth)) - { - for (akey = TREE_CHAIN (METHOD_ADD_ARGS (meth)); - akey; akey = TREE_CHAIN (akey)) - { - tree arg_type = TREE_TYPE (TREE_VALUE (akey)); - - /* APPLE LOCAL begin 4209854 */ - arg_type = objc_decay_parm_type (arg_type); - - /* APPLE LOCAL end 4209854 */ - chainon (arglist, build_tree_list (NULL_TREE, arg_type)); - } - - if (!METHOD_ADD_ARGS_ELLIPSIS_P (meth)) - goto lack_of_ellipsis; - } - else - { - lack_of_ellipsis: - chainon (arglist, OBJC_VOID_AT_END); - } - - return arglist; -} - -static tree -check_duplicates (hash hsh, int methods, int is_class) -{ - tree meth = NULL_TREE; - - if (hsh) - { - meth = hsh->key; - - if (hsh->list) - { - /* We have two or more methods with the same name but - different types. */ - attr loop; - - /* But just how different are those types? If - -Wno-strict-selector-match is specified, we shall not - complain if the differences are solely among types with - identical size and alignment. */ - if (!warn_strict_selector_match) - { - for (loop = hsh->list; loop; loop = loop->next) - if (!comp_proto_with_proto (meth, loop->value, 0)) - goto issue_warning; - - return meth; - } - - issue_warning: - warning (0, "multiple %s named %<%c%s%> found", - methods ? "methods" : "selectors", - (is_class ? '+' : '-'), - IDENTIFIER_POINTER (METHOD_SEL_NAME (meth))); - - warn_with_method (methods ? "using" : "found", - ((TREE_CODE (meth) == INSTANCE_METHOD_DECL) - ? '-' - : '+'), - meth); - for (loop = hsh->list; loop; loop = loop->next) - warn_with_method ("also found", - ((TREE_CODE (loop->value) == INSTANCE_METHOD_DECL) - ? '-' - : '+'), - loop->value); - } - } - return meth; -} - -/* If RECEIVER is a class reference, return the identifier node for - the referenced class. RECEIVER is created by objc_get_class_reference, - so we check the exact form created depending on which runtimes are - used. */ - -static tree -receiver_is_class_object (tree receiver, int self, int super) -{ - tree chain, exp, arg; - - /* The receiver is 'self' or 'super' in the context of a class method. */ - if (objc_method_context - && TREE_CODE (objc_method_context) == CLASS_METHOD_DECL - && (self || super)) - return (super - ? CLASS_SUPER_NAME (implementation_template) - : CLASS_NAME (implementation_template)); - - if (flag_next_runtime) - { - /* The receiver is a variable created by - build_class_reference_decl. */ - if (TREE_CODE (receiver) == VAR_DECL && IS_CLASS (TREE_TYPE (receiver))) - /* Look up the identifier. */ - /* APPLE LOCAL begin ObjC abi v2 */ - for (chain = (flag_objc_abi == 2) - ? classlist_ref_chain - : cls_ref_chain; chain; chain = TREE_CHAIN (chain)) - /* APPLE LOCAL end ObjC abi v2 */ - if (TREE_PURPOSE (chain) == receiver) - return TREE_VALUE (chain); - } - - /* The receiver is a function call that returns an id. Check if - it is a call to objc_getClass, if so, pick up the class name. */ - if (TREE_CODE (receiver) == CALL_EXPR - && (exp = TREE_OPERAND (receiver, 0)) - && TREE_CODE (exp) == ADDR_EXPR - && (exp = TREE_OPERAND (exp, 0)) - && TREE_CODE (exp) == FUNCTION_DECL - /* For some reason, we sometimes wind up with multiple FUNCTION_DECL - prototypes for objc_get_class(). Thankfully, they seem to share the - same function type. */ - && TREE_TYPE (exp) == TREE_TYPE (objc_get_class_decl) - && !strcmp (IDENTIFIER_POINTER (DECL_NAME (exp)), TAG_GETCLASS) - /* We have a call to objc_get_class/objc_getClass! */ - && (arg = TREE_OPERAND (receiver, 1)) - && TREE_CODE (arg) == TREE_LIST - && (arg = TREE_VALUE (arg))) - { - STRIP_NOPS (arg); - if (TREE_CODE (arg) == ADDR_EXPR - && (arg = TREE_OPERAND (arg, 0)) - && TREE_CODE (arg) == STRING_CST) - /* Finally, we have the class name. */ - return get_identifier (TREE_STRING_POINTER (arg)); - } - return 0; -} - -/* If we are currently building a message expr, this holds - the identifier of the selector of the message. This is - used when printing warnings about argument mismatches. */ - -static tree current_objc_message_selector = 0; - -tree -objc_message_selector (void) -{ - return current_objc_message_selector; -} - -/* Construct an expression for sending a message. - MESS has the object to send to in TREE_PURPOSE - and the argument list (including selector) in TREE_VALUE. - - (*(<abstract_decl>(*)())_msg)(receiver, selTransTbl[n], ...); - (*(<abstract_decl>(*)())_msgSuper)(receiver, selTransTbl[n], ...); */ - -tree -objc_build_message_expr (tree mess) -{ - tree receiver = TREE_PURPOSE (mess); - tree sel_name; -#ifdef OBJCPLUS - tree args = TREE_PURPOSE (TREE_VALUE (mess)); -#else - tree args = TREE_VALUE (mess); -#endif - tree method_params = NULL_TREE; - - /* APPLE LOCAL radar 4294425 */ - if (TREE_CODE (receiver) == ERROR_MARK || TREE_CODE (args) == ERROR_MARK) - return error_mark_node; - - /* Obtain the full selector name. */ - if (TREE_CODE (args) == IDENTIFIER_NODE) - /* A unary selector. */ - sel_name = args; - else if (TREE_CODE (args) == TREE_LIST) - sel_name = build_keyword_selector (args); - else - abort (); - - /* Build the parameter list to give to the method. */ - if (TREE_CODE (args) == TREE_LIST) -#ifdef OBJCPLUS - method_params = chainon (args, TREE_VALUE (TREE_VALUE (mess))); -#else - { - tree chain = args, prev = NULL_TREE; - - /* We have a keyword selector--check for comma expressions. */ - while (chain) - { - tree element = TREE_VALUE (chain); - - /* We have a comma expression, must collapse... */ - if (TREE_CODE (element) == TREE_LIST) - { - if (prev) - TREE_CHAIN (prev) = element; - else - args = element; - } - prev = chain; - chain = TREE_CHAIN (chain); - } - method_params = args; - } -#endif - -#ifdef OBJCPLUS - if (processing_template_decl) - /* Must wait until template instantiation time. */ - return build_min_nt (MESSAGE_SEND_EXPR, receiver, sel_name, - method_params); -#endif - - return objc_finish_message_expr (receiver, sel_name, method_params); -} - -/* Look up method SEL_NAME that would be suitable for receiver - of type 'id' (if IS_CLASS is zero) or 'Class' (if IS_CLASS is - nonzero), and report on any duplicates. */ - -static tree -lookup_method_in_hash_lists (tree sel_name, int is_class) -{ - hash method_prototype = NULL; - - if (!is_class) - method_prototype = hash_lookup (nst_method_hash_list, - sel_name); - - if (!method_prototype) - { - method_prototype = hash_lookup (cls_method_hash_list, - sel_name); - is_class = 1; - } - - return check_duplicates (method_prototype, 1, is_class); -} - -/* The 'objc_finish_message_expr' routine is called from within - 'objc_build_message_expr' for non-template functions. In the case of - C++ template functions, it is called from 'build_expr_from_tree' - (in decl2.c) after RECEIVER and METHOD_PARAMS have been expanded. */ - -tree -objc_finish_message_expr (tree receiver, tree sel_name, tree method_params) -{ - tree method_prototype = NULL_TREE, rprotos = NULL_TREE, rtype; - tree selector, retval, class_tree; - int self, super, have_cast; - /* APPLE LOCAL radar 4547918 */ - bool forward_class = false; - - /* APPLE LOCAL begin radar 4180592 */ - if (receiver == error_mark_node || TREE_TYPE (receiver) == error_mark_node) - return receiver; - /* APPLE LOCAL end radar 4180592 */ - /* APPLE LOCAL begin radar 5809099 */ - if (TREE_CODE (TREE_TYPE (receiver)) == BLOCK_POINTER_TYPE) - receiver = convert (objc_object_type, receiver); - /* APPLE LOCAL end radar 5809099 */ - /* Extract the receiver of the message, as well as its type - (where the latter may take the form of a cast or be inferred - from the implementation context). */ - /* APPLE LOCAL begin radar 4653319 */ - rtype = objc_get_inner_exp (receiver); - /* APPLE LOCAL end radar 4653319 */ - self = (rtype == self_decl); - super = (rtype == UOBJC_SUPER_decl); - rtype = TREE_TYPE (receiver); - have_cast = (TREE_CODE (receiver) == NOP_EXPR - || (TREE_CODE (receiver) == COMPOUND_EXPR - && !IS_SUPER (rtype))); - - /* If we are calling [super dealloc], reset our warning flag. */ - if (super && !strcmp ("dealloc", IDENTIFIER_POINTER (sel_name))) - should_call_super_dealloc = 0; - /* APPLE LOCAL begin radar 4757423 */ - /* If we are calling [super finalize], reset our warning flag. */ - if (super && !strcmp ("finalize", IDENTIFIER_POINTER (sel_name))) - should_call_super_finalize = 0; - /* APPLE LOCAL end radar 4757423 */ - - /* If the receiver is a class object, retrieve the corresponding - @interface, if one exists. */ - class_tree = receiver_is_class_object (receiver, self, super); - - /* Now determine the receiver type (if an explicit cast has not been - provided). */ - if (!have_cast) - { - if (class_tree) - /* APPLE LOCAL begin radar 4547918 */ - { - /* APPLE LOCAL begin radar 5741070 */ - tree interface_record_type = NULL; - rtype = lookup_interface (class_tree); - - /* Find the record type definition for the interface class. */ - - if (rtype) - interface_record_type = - c_return_interface_record_type (OBJC_TYPE_NAME (rtype)); - - /* If the record type is found, mark is as used (since it - is used to dispatch a method call). */ - - if (interface_record_type != NULL) - used_types_insert (interface_record_type); - /* APPLE LOCAL end radar 5741070 */ - forward_class = !rtype; - } - /* APPLE LOCAL end radar 4547918 */ - /* Handle `self' and `super'. */ - else if (super) - { - if (!CLASS_SUPER_NAME (implementation_template)) - { - error ("no super class declared in @interface for %qs", - IDENTIFIER_POINTER (CLASS_NAME (implementation_template))); - return error_mark_node; - } - rtype = lookup_interface (CLASS_SUPER_NAME (implementation_template)); - } - else if (self) - rtype = lookup_interface (CLASS_NAME (implementation_template)); - } - - /* If receiver is of type `id' or `Class' (or if the @interface for a - class is not visible), we shall be satisfied with the existence of - any instance or class method. */ - if (objc_is_id (rtype)) - { - class_tree = (IS_CLASS (rtype) ? objc_class_name : NULL_TREE); - rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)) - ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype)) - : NULL_TREE); - rtype = NULL_TREE; - - if (rprotos) - { - /* If messaging 'id <Protos>' or 'Class <Proto>', first search - in protocols themselves for the method prototype. */ - method_prototype - = lookup_method_in_protocol_list (rprotos, sel_name, - class_tree != NULL_TREE); - - /* If messaging 'Class <Proto>' but did not find a class method - prototype, search for an instance method instead, and warn - about having done so. */ - if (!method_prototype && !rtype && class_tree != NULL_TREE) - { - method_prototype - = lookup_method_in_protocol_list (rprotos, sel_name, 0); - - if (method_prototype) - warning (0, "found %<-%s%> instead of %<+%s%> in protocol(s)", - IDENTIFIER_POINTER (sel_name), - IDENTIFIER_POINTER (sel_name)); - } - } - } - else if (rtype) - { - tree orig_rtype = rtype, saved_rtype; - - if (TREE_CODE (rtype) == POINTER_TYPE) - rtype = TREE_TYPE (rtype); - /* Traverse typedef aliases */ - while (TREE_CODE (rtype) == RECORD_TYPE && OBJC_TYPE_NAME (rtype) - && TREE_CODE (OBJC_TYPE_NAME (rtype)) == TYPE_DECL - && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype))) - rtype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype)); - saved_rtype = rtype; - if (TYPED_OBJECT (rtype)) - { - rprotos = TYPE_OBJC_PROTOCOL_LIST (rtype); - rtype = TYPE_OBJC_INTERFACE (rtype); - } - /* If we could not find an @interface declaration, we must have - only seen a @class declaration; so, we cannot say anything - more intelligent about which methods the receiver will - understand. */ - if (!rtype || TREE_CODE (rtype) == IDENTIFIER_NODE) - /* APPLE LOCAL begin radar 4457381 */ - { - rtype = NULL_TREE; - /* We could not find an @interface declaration, yet Message maybe in a - @class's protocol. */ - if (!method_prototype && rprotos) - method_prototype - = lookup_method_in_protocol_list (rprotos, sel_name, 0); - } - /* APPLE LOCAL end radar 4457381 */ - else if (TREE_CODE (rtype) == CLASS_INTERFACE_TYPE - || TREE_CODE (rtype) == CLASS_IMPLEMENTATION_TYPE) - { - /* We have a valid ObjC class name. Look up the method name - in the published @interface for the class (and its - superclasses). */ - method_prototype - /* APPLE LOCAL objc new property */ - = lookup_method_static (rtype, sel_name, class_tree != NULL_TREE, false, false); - - /* If the method was not found in the @interface, it may still - exist locally as part of the @implementation. */ - if (!method_prototype && objc_implementation_context - && CLASS_NAME (objc_implementation_context) - == OBJC_TYPE_NAME (rtype)) - method_prototype - = lookup_method - ((class_tree - ? CLASS_CLS_METHODS (objc_implementation_context) - : CLASS_NST_METHODS (objc_implementation_context)), - sel_name); - - /* If we haven't found a candidate method by now, try looking for - it in the protocol list. */ - if (!method_prototype && rprotos) - method_prototype - = lookup_method_in_protocol_list (rprotos, sel_name, - class_tree != NULL_TREE); - } - else - { - /* APPLE LOCAL begin decay function/array receivers */ -#ifndef OBJCPLUS - /* In C need to decay array/function receivers so can be converted - to id. */ - struct c_expr exp; - exp.value = receiver; - exp = default_function_array_conversion (exp); - receiver = exp.value; - /* APPLE LOCAL begin radar 3533972 */ -#else - if (can_convert_arg (objc_object_type, TREE_TYPE (receiver), - receiver, LOOKUP_NORMAL)) - { - /* In rare cases, 'receiver' must be converted to type 'id' using - user-defined type conversion. 'id' is type of the 1st argument to - objc_msgSend (id self, SEL op, ...); */ - tree cnv_rec = perform_implicit_conversion (objc_object_type, receiver); - if (cnv_rec && cnv_rec != error_mark_node) - return objc_finish_message_expr (cnv_rec, sel_name, method_params); - } - /* APPLE LOCAL end radar 3533972 */ -#endif - /* APPLE LOCAL end decay function/array receivers */ - /* APPLE LOCAL begin radar 5595325 */ - /* Do not issue this warning on random NSObject objects. */ - if (!objc_nsobject_attribute_type (orig_rtype)) - warning (0, "invalid receiver type %qs", - gen_type_name (orig_rtype)); - /* After issuing the "invalid receiver" warning, perform method - lookup as if we were messaging 'id'. */ - /* APPLE LOCAL end radar 5595325 */ - rtype = rprotos = NULL_TREE; - } - } - - - /* For 'id' or 'Class' receivers, search in the global hash table - as a last resort. For all receivers, warn if protocol searches - have failed. */ - if (!method_prototype) - { - if (rprotos) - warning (0, "%<%c%s%> not found in protocol(s)", - (class_tree ? '+' : '-'), - IDENTIFIER_POINTER (sel_name)); - - if (!rtype) - /* APPLE LOCAL begin radar 4547918 */ - { - method_prototype - = lookup_method_in_hash_lists (sel_name, class_tree != NULL_TREE); - if (forward_class && method_prototype) - warning (0, "receiver %qs is a forward class and corresponding @interface may not exist", - IDENTIFIER_POINTER (class_tree)); - } - /* APPLE LOCAL end radar 4547918 */ - } - - /* APPLE LOCAL begin radar 4506893 */ - /* APPLE LOCAL begin objc new property */ - if (!method_prototype && in_objc_property_setter_name_context) - { - error ("object cannot be set - either readonly property or no setter found"); - /* APPLE LOCAL radar 5390587 */ - return error_mark_node; - } - /* APPLE LOCAL end objc new property */ - else if (!method_prototype) - /* APPLE LOCAL end radar 4506893 */ - { - static bool warn_missing_methods = false; - - if (rtype) - warning (0, "%qs may not respond to %<%c%s%>", - IDENTIFIER_POINTER (OBJC_TYPE_NAME (rtype)), - (class_tree ? '+' : '-'), - IDENTIFIER_POINTER (sel_name)); - /* If we are messaging an 'id' or 'Class' object and made it here, - then we have failed to find _any_ instance or class method, - respectively. */ - /* APPLE LOCAL radar 5932809 - copyable byref blocks */ - else if (!donot_warn_missing_methods) - warning (0, "no %<%c%s%> method found", - (class_tree ? '+' : '-'), - IDENTIFIER_POINTER (sel_name)); - /* APPLE LOCAL radar 5932809 - copyable byref blocks */ - if (!warn_missing_methods && !donot_warn_missing_methods) - { - warning (0, "(Messages without a matching method signature"); - warning (0, "will be assumed to return %<id%> and accept"); - warning (0, "%<...%> as arguments.)"); - warn_missing_methods = true; - } - } - - /* APPLE LOCAL begin radar 6049617 - radar 5005756 */ - /* If receiver has an 'id' type, then method selection happens at runtime. - It is misleading to issue warning on a method call not knowing which - method actually gets called; thus check for objc_is_id is added. */ - if (method_prototype && rtype) - { - if (TREE_DEPRECATED (method_prototype)) - warn_deprecated_use (method_prototype); - if (TREE_UNAVAILABLE (method_prototype)) - error_unavailable_use (method_prototype); - } - /* APPLE LOCAL end radar 6049617 - radar 5005756 */ - /* Save the selector name for printing error messages. */ - current_objc_message_selector = sel_name; - - /* Build the parameters list for looking up the method. - These are the object itself and the selector. */ - - /* APPLE LOCAL ObjC new abi */ - /* Code moved down */ - /* APPLE LOCAL begin ObjC new abi */ - /* APPLE LOCAL ARM hybrid objc-2.0 - radar 6307941 */ - if (flag_objc_abi == 2 && !objc_legacy_dispatched_selector_p (sel_name)) - { - tree ret_type; - tree message_func_decl; - bool check_for_nil = flag_objc_nilcheck; - - ret_type = (method_prototype ? - TREE_VALUE (TREE_TYPE (method_prototype)) : - objc_object_type); - - /* Do we need to check for nil receivers ? */ - /* For now, message sent to classes need no nil check. In future, class - declaration marked as weak_import must be nil checked. */ - if (super - || (TREE_CODE (receiver) == VAR_DECL - && TREE_TYPE (receiver) == objc_class_type)) - check_for_nil = false; - - if (!targetm.calls.struct_value_rtx (0, 0) - && (TREE_CODE (ret_type) == RECORD_TYPE - || TREE_CODE (ret_type) == UNION_TYPE) - /* APPLE LOCAL begin radar 5080710 */ - && (TREE_ADDRESSABLE (ret_type) - || targetm.calls.return_in_memory (ret_type, 0))) - /* APPLE LOCAL end radar 5080710 */ - { - if (super) - message_func_decl = umsg_id_super2_stret_fixup_decl; - else - message_func_decl = objc_is_id (rtype) - ? umsg_id_stret_fixup_decl - : umsg_stret_fixup_decl; - } - else - { - if (super) - message_func_decl = umsg_id_super2_fixup_decl; - else - /* APPLE LOCAL begin radar 4557598 */ - { - if (objc_is_id (rtype)) - message_func_decl = umsg_id_fixup_decl; - else if (targetm.calls.objc_fpreturn_msgcall (ret_type, true)) - message_func_decl = umsg_fixup_decl; - else if (targetm.calls.objc_fpreturn_msgcall (ret_type, false)) - message_func_decl = umsg_fpret_fixup_decl; - else - message_func_decl = umsg_fixup_decl; - } - /* APPLE LOCAL end radar 4557598 */ - } - - selector = build_selector_messenger_reference (sel_name, - message_func_decl); - - /* selector = &_msg; */ - selector = build_unary_op (ADDR_EXPR, selector, 0); - - selector = build_c_cast (super - ? objc_v2_super_selector_type - : objc_v2_selector_type, selector); - - /* (*_msg.messenger) (receiver, &_msg, ...); */ - retval = build_v2_build_objc_method_call (super, method_prototype, - /* APPLE LOCAL radar 6307941 */ - receiver, sel_name, selector, - method_params, - check_for_nil); - } - else - { - if (flag_typed_selectors) - selector = build_typed_selector_reference (sel_name, method_prototype); - else -/* APPLE LOCAL begin radar 4359757 */ - selector = flag_next_runtime - ? build_next_runtime_selector_reference (sel_name) - : build_selector_reference (sel_name); -/* APPLE LOCAL end radar 4359757 */ - - retval = build_objc_method_call (super, method_prototype, - /* APPLE LOCAL radar 6307941 */ - receiver, sel_name, - selector, method_params); - } - /* APPLE LOCAL end ObjC new abi */ - - current_objc_message_selector = 0; - - return retval; -} - -/* Build a tree expression to send OBJECT the operation SELECTOR, - looking up the method on object LOOKUP_OBJECT (often same as OBJECT), - assuming the method has prototype METHOD_PROTOTYPE. - (That is an INSTANCE_METHOD_DECL or CLASS_METHOD_DECL.) - Use METHOD_PARAMS as list of args to pass to the method. - If SUPER_FLAG is nonzero, we look up the superclass's method. */ - -static tree -build_objc_method_call (int super_flag, tree method_prototype, - /* APPLE LOCAL radar 6307941 */ - tree lookup_object, tree sel_name, tree selector, - tree method_params) -{ - tree sender = (super_flag ? umsg_super_decl : - (!flag_next_runtime || flag_nil_receivers - /* APPLE LOCAL begin radar 4590221 */ - ? umsg_decl - /* APPLE LOCAL end radar 4590221 */ - : umsg_nonnil_decl)); - tree rcv_p = (super_flag ? objc_super_type : objc_object_type); - - /* If a prototype for the method to be called exists, then cast - the sender's return type and arguments to match that of the method. - Otherwise, leave sender as is. */ - tree ret_type - = (method_prototype - ? TREE_VALUE (TREE_TYPE (method_prototype)) - : objc_object_type); - /* APPLE LOCAL begin radar 3803157 - objc attribute */ - /* APPLE LOCAL radar 6307941 */ - tree method_param_types = get_arg_type_list (sel_name, method_prototype, - METHOD_REF, super_flag); - tree ftype = build_function_type (ret_type, method_param_types); - tree sender_cast; - tree method, t; - if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype)) - ftype = build_type_attribute_variant ( - ftype, METHOD_TYPE_ATTRIBUTES (method_prototype)); - - sender_cast = build_pointer_type (ftype); - lookup_object = build_c_cast (rcv_p, lookup_object); - /* APPLE LOCAL end radar 3803157 - objc attribute */ - - /* Use SAVE_EXPR to avoid evaluating the receiver twice. */ - lookup_object = save_expr (lookup_object); - - if (flag_next_runtime) - { -/* APPLE LOCAL begin radar 4491211 */ -#ifdef OBJCPLUS - complete_type (ret_type); -#endif -/* APPLE LOCAL end radar 4491211 */ - /* If we are returning a struct in memory, and the address - of that memory location is passed as a hidden first - argument, then change which messenger entry point this - expr will call. NB: Note that sender_cast remains - unchanged (it already has a struct return type). */ - /* APPLE LOCAL begin ARM 4961719 */ - if (aggregate_value_p (ret_type, 0)) - /* APPLE LOCAL end ARM 4961719 */ - sender = (super_flag ? umsg_super_stret_decl : - flag_nil_receivers ? umsg_stret_decl : umsg_nonnil_stret_decl); - /* APPLE LOCAL begin radar 4280641 */ - else if (!super_flag && targetm.calls.objc_fpreturn_msgcall (ret_type, true)) - sender = umsg_decl; - else if (!super_flag && targetm.calls.objc_fpreturn_msgcall (ret_type, false)) - sender = umsg_fpret_decl; - /* APPLE LOCAL end radar 4280641 */ - - method_params = tree_cons (NULL_TREE, lookup_object, - tree_cons (NULL_TREE, selector, - method_params)); - method = build_fold_addr_expr (sender); - } - else - { - /* This is the portable (GNU) way. */ - tree object; - - /* First, call the lookup function to get a pointer to the method, - then cast the pointer, then call it with the method arguments. */ - - object = (super_flag ? self_decl : lookup_object); - - t = tree_cons (NULL_TREE, selector, NULL_TREE); - t = tree_cons (NULL_TREE, lookup_object, t); - method = build_function_call (sender, t); - - /* Pass the object to the method. */ - method_params = tree_cons (NULL_TREE, object, - tree_cons (NULL_TREE, selector, - method_params)); - } - - /* ??? Selector is not at this point something we can use inside - the compiler itself. Set it to garbage for the nonce. */ - t = build3 (OBJ_TYPE_REF, sender_cast, method, lookup_object, size_zero_node); - return build_function_call (t, method_params); -} - - -/* APPLE LOCAL begin ObjC new abi */ -/* Build the new abi's messaging librrary call. It looks like: - (*_msg.messanger) (receiver, &_msg, ...) */ - -static tree -build_v2_build_objc_method_call (int super_flag, tree method_prototype, - tree lookup_object, tree sel_name, - tree selector, tree method_params, - bool check_for_nil) -{ - tree ret_val; - tree sender, rcv_p, t; - tree ret_type - = (method_prototype - ? TREE_VALUE (TREE_TYPE (method_prototype)) - : objc_object_type); - /* APPLE LOCAL radar 6307941 */ - tree method_param_types = get_arg_type_list (sel_name, method_prototype, - METHOD_REF, super_flag); - /* APPLE LOCAL begin radar 3803157 - objc attribute */ - tree ftype = build_function_type (ret_type, method_param_types); - tree sender_cast; - - if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype)) - ftype = build_type_attribute_variant ( - ftype, METHOD_TYPE_ATTRIBUTES (method_prototype)); - - sender_cast = build_pointer_type (ftype); - /* APPLE LOCAL end radar 3803157 - objc attribute */ - if (check_for_nil) - method_params = objc_copy_to_temp_side_effect_params (method_param_types, - method_params); - - /* Get &message_ref_t.messenger */ - sender = build_c_cast (build_pointer_type ( - super_flag - ? objc_v2_super_imp_type - : objc_v2_imp_type), selector); - - sender = build_indirect_ref (sender, "unary *"); - - rcv_p = (super_flag ? objc_super_type : objc_object_type); - - lookup_object = build_c_cast (rcv_p, lookup_object); - - /* Use SAVE_EXPR to avoid evaluating the receiver twice. */ - lookup_object = save_expr (lookup_object); - - method_params = tree_cons (NULL_TREE, lookup_object, - tree_cons (NULL_TREE, selector, - method_params)); - t = build3 (OBJ_TYPE_REF, sender_cast, sender, lookup_object, size_zero_node); - ret_val = build_function_call (t, method_params); - if (check_for_nil) - { - /* receiver != nil ? ret_val : 0 */ - tree ftree; - tree ifexp; - - if (TREE_CODE (ret_type) == RECORD_TYPE - || TREE_CODE (ret_type) == UNION_TYPE) - ftree = build_constructor_from_list (ret_type, NULL_TREE); - else - ftree = fold_convert (ret_type, integer_zero_node); - - ifexp = build_binary_op (NE_EXPR, - lookup_object, - fold_convert (rcv_p, integer_zero_node), 1); - - ret_val = build_conditional_expr (ifexp, ret_val, ftree); - - } - return ret_val; -} - -/* Declare variable which holds 'struct protocol_t' meta data. */ -/* APPLE LOCAL begin radar 4695109 */ -/* poniter to protocol metadata in new ABI protocol is now generated - like the old abi. */ -static void -build_v2_protocol_reference (tree p) -{ - tree decl; - const char *proto_name; - - /* static struct protocol_t _OBJC_PROTOCOL_$<mumble>; */ - - /* APPLE LOCAL begin radar 6255913 */ - proto_name = synth_id_with_class_suffix ("l_OBJC_PROTOCOL_$", p); - decl = create_hidden_decl (objc_v2_protocol_template, proto_name); - DECL_WEAK (decl) = 1; - set_user_assembler_name (decl, proto_name); - /* APPLE LOCAL end radar 6255913 */ - PROTOCOL_V2_FORWARD_DECL (p) = decl; -} -/* APPLE LOCAL end radar 4695109 */ - -/* Main routine to build all meta data for all protocols used in a translation unit. */ - -static void -generate_v2_protocols (void) -{ - tree p, encoding; - tree decl; - tree initlist, protocol_name_expr, refs_decl, refs_expr; - - /* If a protocol was directly referenced, pull in indirect references. */ - for (p = protocol_chain; p; p = TREE_CHAIN (p)) - /* APPLE LOCAL begin radar 4695109 */ - if (PROTOCOL_V2_FORWARD_DECL (p) && PROTOCOL_LIST (p)) - generate_v2_protocol_references (PROTOCOL_LIST (p)); - /* APPLE LOCAL end radar 4695109 */ - - for (p = protocol_chain; p; p = TREE_CHAIN (p)) - { - tree nst_methods = PROTOCOL_NST_METHODS (p); - tree cls_methods = PROTOCOL_CLS_METHODS (p); - - /* If protocol wasn't referenced, don't generate any code. */ - decl = PROTOCOL_V2_FORWARD_DECL (p); - - /* APPLE LOCAL radar 4695109 */ - if (!decl) - continue; - - /* Make sure we link in the Protocol class. */ - objc_v2_get_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); - - while (nst_methods) - { - if (! METHOD_ENCODING (nst_methods)) - { - encoding = encode_method_prototype (nst_methods); - METHOD_ENCODING (nst_methods) = encoding; - } - nst_methods = TREE_CHAIN (nst_methods); - } - - while (cls_methods) - { - if (! METHOD_ENCODING (cls_methods)) - { - encoding = encode_method_prototype (cls_methods); - METHOD_ENCODING (cls_methods) = encoding; - } - - cls_methods = TREE_CHAIN (cls_methods); - } - /* APPLE LOCAL begin radar 4695109 */ - generate_v2_method_descriptors (p, false); - - nst_methods = PROTOCOL_OPTIONAL_NST_METHODS (p); - while (nst_methods) - { - if (! METHOD_ENCODING (nst_methods)) - { - encoding = encode_method_prototype (nst_methods); - METHOD_ENCODING (nst_methods) = encoding; - } - nst_methods = TREE_CHAIN (nst_methods); - } - - cls_methods = PROTOCOL_OPTIONAL_CLS_METHODS (p); - while (cls_methods) - { - if (! METHOD_ENCODING (cls_methods)) - { - encoding = encode_method_prototype (cls_methods); - METHOD_ENCODING (cls_methods) = encoding; - } - - cls_methods = TREE_CHAIN (cls_methods); - } - - generate_v2_method_descriptors (p, true); - /* APPLE LOCAL end radar 4695109 */ - - if (PROTOCOL_LIST (p)) - refs_decl = generate_v2_protocol_list (p); - else - refs_decl = 0; - - /* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */ - protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names); - - if (refs_decl) - refs_expr = convert (build_pointer_type (objc_v2_protocol_template), - build_unary_op (ADDR_EXPR, refs_decl, 0)); - else - /* APPLE LOCAL begin radar 6285794 */ - refs_expr = - convert (build_pointer_type (objc_v2_protocol_template), - integer_zero_node); - /* APPLE LOCAL end radar 6285794 */ - - /* APPLE LOCAL begin radar 4695101 */ - /* Build table of list of properties for this protocol. */ - objc_implementation_context = p; - generate_v2_property_tables (p); - /* UOBJC_V2_PROPERTY_decl points to table of properties for - this protocol. */ - /* APPLE LOCAL end radar 4695101 */ - - /* UOBJC_V2_INSTANCE_METHODS_decl/UOBJC_V2_CLASS_METHODS_decl are set - by generate_v2_method_descriptors, which is called above. */ - initlist = build_protocol_initializer (TREE_TYPE (decl), - protocol_name_expr, refs_expr, - UOBJC_V2_INSTANCE_METHODS_decl, - UOBJC_V2_CLASS_METHODS_decl, true, - /* APPLE LOCAL radar 4695101 */ - UOBJC_V2_PROPERTY_decl, - /* APPLE LOCAL begin radar 4695109 */ - UOBJC_PROTOCOL_OPT_NST_METHODS_decl, - UOBJC_PROTOCOL_OPT_CLS_METHODS_decl); - /* APPLE LOCAL end radar 4695109 */ - finish_var_decl (decl, initlist); - /* APPLE LOCAL radar 4533974 - ObjC new protocol - radar 6351990 */ - objc_add_to_protocol_list_chain (p, decl); - } -} - -static void -/* APPLE LOCAL end ObjC new abi */ -build_protocol_reference (tree p) -{ - tree decl; - const char *proto_name; - - /* static struct _objc_protocol _OBJC_PROTOCOL_<mumble>; */ - - proto_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL", p); - decl = start_var_decl (objc_protocol_template, proto_name); - - PROTOCOL_FORWARD_DECL (p) = decl; -} - -/* This function is called by the parser when (and only when) a - @protocol() expression is found, in order to compile it. */ -tree -objc_build_protocol_expr (tree protoname) -{ - tree expr; - tree p = lookup_protocol (protoname); - - if (!p) - { - error ("cannot find protocol declaration for %qs", - IDENTIFIER_POINTER (protoname)); - return error_mark_node; - } - - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2) - { - /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ - if (!PROTOCOL_V2_FORWARD_DECL (p)) - build_v2_protocol_reference (p); - return objc_v2_get_protocol_reference (p); - /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ - } - else - { - if (!PROTOCOL_FORWARD_DECL (p)) - build_protocol_reference (p); - - expr = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0); - } - /* APPLE LOCAL end ObjC abi v2 */ - - /* ??? Ideally we'd build the reference with objc_protocol_type directly, - if we have it, rather than converting it here. */ - expr = convert (objc_protocol_type, expr); - - /* The @protocol() expression is being compiled into a pointer to a - statically allocated instance of the Protocol class. To become - usable at runtime, the 'isa' pointer of the instance need to be - fixed up at runtime by the runtime library, to point to the - actual 'Protocol' class. */ - - /* For the GNU runtime, put the static Protocol instance in the list - of statically allocated instances, so that we make sure that its - 'isa' pointer is fixed up at runtime by the GNU runtime library - to point to the Protocol class (at runtime, when loading the - module, the GNU runtime library loops on the statically allocated - instances (as found in the defs field in objc_symtab) and fixups - all the 'isa' pointers of those objects). */ - if (! flag_next_runtime) - { - /* This type is a struct containing the fields of a Protocol - object. (Cfr. objc_protocol_type instead is the type of a pointer - to such a struct). */ - tree protocol_struct_type = xref_tag - (RECORD_TYPE, get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); - tree *chain; - - /* Look for the list of Protocol statically allocated instances - to fixup at runtime. Create a new list to hold Protocol - statically allocated instances, if the list is not found. At - present there is only another list, holding NSConstantString - static instances to be fixed up at runtime. */ - for (chain = &objc_static_instances; - *chain && TREE_VALUE (*chain) != protocol_struct_type; - chain = &TREE_CHAIN (*chain)); - if (!*chain) - { - *chain = tree_cons (NULL_TREE, protocol_struct_type, NULL_TREE); - add_objc_string (OBJC_TYPE_NAME (protocol_struct_type), - class_names); - } - - /* Add this statically allocated instance to the Protocol list. */ - TREE_PURPOSE (*chain) = tree_cons (NULL_TREE, - PROTOCOL_FORWARD_DECL (p), - TREE_PURPOSE (*chain)); - } - - - return expr; -} - -/* This function is called by the parser when a @selector() expression - is found, in order to compile it. It is only called by the parser - and only to compile a @selector(). */ -tree -objc_build_selector_expr (tree selnamelist) -{ - tree selname; - - /* APPLE LOCAL begin radar 5409313 */ - if (selnamelist == NULL_TREE) - { - error ("method name missing in @selector"); - return error_mark_node; - } - /* APPLE LOCAL end radar 5409313 */ - /* Obtain the full selector name. */ - if (TREE_CODE (selnamelist) == IDENTIFIER_NODE) - /* A unary selector. */ - selname = selnamelist; - else if (TREE_CODE (selnamelist) == TREE_LIST) - selname = build_keyword_selector (selnamelist); - else - abort (); - - /* If we are required to check @selector() expressions as they - are found, check that the selector has been declared. */ - if (warn_undeclared_selector) - { - /* Look the selector up in the list of all known class and - instance methods (up to this line) to check that the selector - exists. */ - hash hsh; - - /* First try with instance methods. */ - hsh = hash_lookup (nst_method_hash_list, selname); - - /* If not found, try with class methods. */ - if (!hsh) - { - hsh = hash_lookup (cls_method_hash_list, selname); - } - - /* If still not found, print out a warning. */ - if (!hsh) - { - warning (0, "undeclared selector %qs", IDENTIFIER_POINTER (selname)); - } - } - - - if (flag_typed_selectors) - return build_typed_selector_reference (selname, 0); - else -/* APPLE LOCAL begin radar 4359757 */ - return flag_next_runtime - ? build_next_runtime_selector_reference (selname) - : build_selector_reference (selname); -/* APPLE LOCAL end radar 4359757 */ -} - -tree -objc_build_encode_expr (tree type) -{ - tree result; - const char *string; - - encode_type (type, obstack_object_size (&util_obstack), - OBJC_ENCODE_INLINE_DEFS); - obstack_1grow (&util_obstack, 0); /* null terminate string */ - string = obstack_finish (&util_obstack); - - /* Synthesize a string that represents the encoded struct/union. */ - result = my_build_string (strlen (string) + 1, string); - obstack_free (&util_obstack, util_firstobj); - return result; -} - -/* APPLE LOCAL begin radar 6230701 */ -/* Find a 'self' declaration in this block. If not found, - add a 'const' copy in current block. */ -static void -access_block_ref_self_decl (tree *decl) -{ - if (lookup_name_in_block (DECL_NAME (*decl), decl)) - *decl = lookup_name (DECL_NAME (*decl)); - else - *decl = build_block_ref_decl (DECL_NAME (*decl), *decl); - gcc_assert (*decl); -} -/* APPLE LOCAL end radar 6230701 */ - -static tree -build_ivar_reference (tree id) -{ - /* APPLE LOCAL radar 5811191 - blocks */ - tree decl; - /* APPLE LOCAL ObjC new abi */ - tree ivar, base; - if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL) - { - /* Historically, a class method that produced objects (factory - method) would assign `self' to the instance that it - allocated. This would effectively turn the class method into - an instance method. Following this assignment, the instance - variables could be accessed. That practice, while safe, - violates the simple rule that a class method should not refer - to an instance variable. It's better to catch the cases - where this is done unknowingly than to support the above - paradigm. */ - warning (0, "instance variable %qs accessed in class method", - IDENTIFIER_POINTER (id)); - self_decl = convert (objc_instance_type, self_decl); /* cast */ - } - - /* APPLE LOCAL begin ObjC new abi */ - /* APPLE LOCAL begin radar 5811191 - blocks */ - decl = self_decl; - if (cur_block) - { - /* Find a 'self' declaration in this block. If not found, - add a 'const' copy in current block. */ - access_block_ref_self_decl (&decl); - gcc_assert (decl); - } - base = build_indirect_ref (decl, "->"); - /* APPLE LOCAL end radar 5811191 - blocks */ - if ((ivar = objc_v2_build_ivar_ref (base, id))) - return ivar; - else - return objc_build_component_ref (base, id); - /* APPLE LOCAL end ObjC new abi */ -} - -/* Compute a hash value for a given method SEL_NAME. */ - -static size_t -hash_func (tree sel_name) -{ - const unsigned char *s - = (const unsigned char *)IDENTIFIER_POINTER (sel_name); - size_t h = 0; - - while (*s) - h = h * 67 + *s++ - 113; - return h; -} - -static void -hash_init (void) -{ - nst_method_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - cls_method_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - /* APPLE LOCAL begin radar 4359757 */ - class_nst_method_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - class_cls_method_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - class_names_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - meth_var_names_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - meth_var_types_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - prop_names_attr_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - sel_ref_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - /* APPLE LOCAL end radar 4359757 */ - - /* APPLE LOCAL begin radar 4345837 */ - cls_name_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - als_name_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - /* APPLE LOCAL end radar 4345837 */ - - /* APPLE LOCAL begin radar 4441049 */ - ivar_offset_hash_list - = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); - /* APPLE LOCAL end radar 4441049 */ - - /* Initialize the hash table used to hold the constant string objects. */ - string_htab = htab_create_ggc (31, string_hash, - string_eq, NULL); -/* APPLE LOCAL begin radar 4204796 */ - /* code removed */ -} -/* APPLE LOCAL end radar 4204796 */ -/* APPLE LOCAL begin radar 4345837 */ -/* This routine adds sel_name to the hash list. sel_name is a class or alias - name for the class. If alias name, then value is its underlying class. - If class, the value is NULL_TREE. */ - -static void -hash_class_name_enter (hash *hashlist, tree sel_name, tree value) -{ - hash obj; - int slot = hash_func (sel_name) % SIZEHASHTABLE; - - obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); - if (value != NULL_TREE) - { - /* Save the underlying class for the 'alias' in the hash table */ - attr obj_attr = (attr) ggc_alloc (sizeof (struct hashed_attribute)); - obj_attr->value = value; - obj->list = obj_attr; - } - else - obj->list = 0; - obj->next = hashlist[slot]; - obj->key = sel_name; - - hashlist[slot] = obj; /* append to front */ - -} - -/* Searches in the hash table looking for a match for class or alias name. */ - -static hash -hash_class_name_lookup (hash *hashlist, tree sel_name) -{ - hash target; - - target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; - - while (target) - { - if (sel_name == target->key) - return target; - - target = target->next; - } - return 0; -} -/* APPLE LOCAL end radar 4345837 */ - -/* APPLE LOCAL begin radar 4441049 */ -/* This routine is given an extern variable and enters it in its hash table. - Note that hashing is done on its inner IDENTIFIER_NODE node. */ - -static void -hash_name_enter (hash *hashlist, tree ivar) -{ - hash obj; - int slot = hash_func (DECL_NAME (ivar)) % SIZEHASHTABLE; - - obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); - obj->list = 0; - obj->next = hashlist[slot]; - obj->key = ivar; - - hashlist[slot] = obj; /* append to front */ -} - -/* This routine is given a name and returns a matching extern variable if - one is found. */ - -static tree -hash_name_lookup (hash *hashlist, tree ivar_name) -{ - hash target; - - target = hashlist[hash_func (ivar_name) % SIZEHASHTABLE]; - - while (target) - { - if (ivar_name == DECL_NAME (target->key)) - return target->key; - - target = target->next; - } - return 0; -} -/* APPLE LOCAL end radar 4441049 */ - -/* WARNING!!!! hash_enter is called with a method, and will peek - inside to find its selector! But hash_lookup is given a selector - directly, and looks for the selector that's inside the found - entry's key (method) for comparison. */ - -static void -hash_enter (hash *hashlist, tree method) -{ - hash obj; - int slot = hash_func (METHOD_SEL_NAME (method)) % SIZEHASHTABLE; - - obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); - obj->list = 0; - obj->next = hashlist[slot]; - obj->key = method; - - hashlist[slot] = obj; /* append to front */ -} - -static hash -hash_lookup (hash *hashlist, tree sel_name) -{ - hash target; - - target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; - - while (target) - { - if (sel_name == METHOD_SEL_NAME (target->key)) - return target; - - target = target->next; - } - return 0; -} - -static void -hash_add_attr (hash entry, tree value) -{ - attr obj; - - obj = (attr) ggc_alloc (sizeof (struct hashed_attribute)); - obj->next = entry->list; - obj->value = value; - - entry->list = obj; /* append to front */ -} - -static tree -lookup_method (tree mchain, tree method) -{ - tree key; - - if (TREE_CODE (method) == IDENTIFIER_NODE) - key = method; - else - key = METHOD_SEL_NAME (method); - - while (mchain) - { - if (METHOD_SEL_NAME (mchain) == key) - return mchain; - - mchain = TREE_CHAIN (mchain); - } - return NULL_TREE; -} - -/* APPLE LOCAL begin radar 4359757 */ -/* This routine does a hash lookup keyed on method name and further - qualified by its 'class'. */ -static hash -class_method_hash_lookup (hash *hashlist, tree sel_name, tree class) -{ - hash target; - - target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; - while (target) - { - if (sel_name == METHOD_SEL_NAME (target->key) - && class == METHOD_CONTEXT (target->key)) - return target; - target = target->next; - } - return 0; -} - -static void -add_class_method_hash (hash *hash_list, tree method, tree class) -{ - hash_enter (hash_list, method); - METHOD_CONTEXT (method) = class; -} - -/* This routine does a quick hash look up of METHOD_IDENT in global - class-method hash table. Hash function is keyed on method name but - 'context' of method found must also match CLASS. -*/ -static tree -fast_lookup_method (int is_class, tree class, tree method_ident) -{ - hash hsh = (!is_class) ? class_method_hash_lookup (class_nst_method_hash_list, - method_ident, class) - : class_method_hash_lookup (class_cls_method_hash_list, - method_ident, class); - return !hsh ? NULL_TREE : hsh->key; -} -/* APPLE LOCAL end radar 4359757 */ - -/* Look up a class (if OBJC_LOOKUP_CLASS is set in FLAGS) or instance method - in INTERFACE, along with any categories and protocols attached thereto. - If method is not found, and the OBJC_LOOKUP_NO_SUPER is _not_ set in FLAGS, - recursively examine the INTERFACE's superclass. If OBJC_LOOKUP_CLASS is - set, OBJC_LOOKUP_NO_SUPER is cleared, and no suitable class method could - be found in INTERFACE or any of its superclasses, look for an _instance_ - method of the same name in the root class as a last resort. - - If a suitable method cannot be found, return NULL_TREE. */ - -static tree -/* APPLE LOCAL objc new property */ -lookup_method_static (tree interface, tree ident, int flags, bool property_lookup, -/* APPLE LOCAL radar 5277239 */ - bool class_method_only) -{ - tree meth = NULL_TREE, root_inter = NULL_TREE; - tree inter = interface; - int is_class = (flags & OBJC_LOOKUP_CLASS); - int no_superclasses = (flags & OBJC_LOOKUP_NO_SUPER); - - while (inter) - { - tree chain = is_class ? CLASS_CLS_METHODS (inter) : CLASS_NST_METHODS (inter); - tree category = inter; - - /* First, look up the method in the class itself. */ - /* APPLE LOCAL begin objc new property - radar 4359757 */ - if ((meth = fast_lookup_method (is_class, inter, ident)) - && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) - /* APPLE LOCAL end objc new property */ - return meth; - - /* Failing that, look for the method in each category of the class. */ - while ((category = CLASS_CATEGORY_LIST (category))) - { - chain = is_class ? CLASS_CLS_METHODS (category) : CLASS_NST_METHODS (category); - - /* Check directly in each category. */ - /* APPLE LOCAL begin objc new property */ - if ((meth = lookup_method (chain, ident)) - && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) - /* APPLE LOCAL end objc new property */ - return meth; - - /* Failing that, check in each category's protocols. */ - if (CLASS_PROTOCOL_LIST (category)) - { - /* APPLE LOCAL begin objc new property */ - if ((meth = (lookup_method_in_protocol_list - (CLASS_PROTOCOL_LIST (category), ident, is_class))) - && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) - /* APPLE LOCAL end objc new property */ - return meth; - } - } - - /* If not found in categories, check in protocols of the main class. */ - if (CLASS_PROTOCOL_LIST (inter)) - { - /* APPLE LOCAL begin objc new property */ - if ((meth = (lookup_method_in_protocol_list - (CLASS_PROTOCOL_LIST (inter), ident, is_class))) - && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) - /* APPLE LOCAL end objc new property */ - return meth; - } - - /* If we were instructed not to look in superclasses, don't. */ - if (no_superclasses) - return NULL_TREE; - - /* Failing that, climb up the inheritance hierarchy. */ - root_inter = inter; - inter = lookup_interface (CLASS_SUPER_NAME (inter)); - } - while (inter); - - /* If no class (factory) method was found, check if an _instance_ - method of the same name exists in the root class. This is what - the Objective-C runtime will do. If an instance method was not - found, return 0. */ - /* APPLE LOCAL begin radar 5277239 */ - /* APPLE LOCAL objc new property */ - return (is_class && !class_method_only) - ? lookup_method_static (root_inter, ident, 0, property_lookup, false): NULL_TREE; - /* APPLE LOCAL end radar 5277239 */ -} - -/* Add the method to the hash list if it doesn't contain an identical - method already. */ - -static void -add_method_to_hash_list (hash *hash_list, tree method) -{ - hash hsh; - - if (!(hsh = hash_lookup (hash_list, METHOD_SEL_NAME (method)))) - { - /* Install on a global chain. */ - hash_enter (hash_list, method); - } - else - { - /* Check types against those; if different, add to a list. */ - attr loop; - /* APPLE LOCAL radar 5370783 */ - int already_there = comp_proto_with_proto (method, hsh->key, 2); - for (loop = hsh->list; !already_there && loop; loop = loop->next) - /* APPLE LOCAL radar 5370783 */ - already_there |= comp_proto_with_proto (method, loop->value, 2); - if (!already_there) - hash_add_attr (hsh, method); - } -} - -static tree -/* APPLE LOCAL C* language */ -objc_add_method (tree class, tree method, int is_class, int is_optional) -{ - tree mth; - - /* APPLE LOCAL begin C* language */ - /* @optional methods are added to protocol's OPTIONAL list */ - if (is_optional) - { - gcc_assert (TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE); - if (!(mth = lookup_method (is_class - ? PROTOCOL_OPTIONAL_CLS_METHODS (class) - : PROTOCOL_OPTIONAL_NST_METHODS (class), method))) - { - if (is_class) - { - TREE_CHAIN (method) = PROTOCOL_OPTIONAL_CLS_METHODS (class); - PROTOCOL_OPTIONAL_CLS_METHODS (class) = method; - } - else - { - TREE_CHAIN (method) = PROTOCOL_OPTIONAL_NST_METHODS (class); - PROTOCOL_OPTIONAL_NST_METHODS (class) = method; - } - } - } - else - /* APPLE LOCAL end C* language */ - /* APPLE LOCAL begin radar 4359757 */ - if (!(mth = fast_lookup_method (is_class, class, METHOD_SEL_NAME (method)))) - /* APPLE LOCAL end radar 4359757 */ - { - /* put method on list in reverse order */ - if (is_class) - { - TREE_CHAIN (method) = CLASS_CLS_METHODS (class); - CLASS_CLS_METHODS (class) = method; - } - else - { - TREE_CHAIN (method) = CLASS_NST_METHODS (class); - CLASS_NST_METHODS (class) = method; - } - /* APPLE LOCAL begin radar 4359757 */ - add_class_method_hash ((!is_class) ? class_nst_method_hash_list - : class_cls_method_hash_list, - method, class); - /* APPLE LOCAL end radar 4359757 */ - } - else - { - /* When processing an @interface for a class or category, give hard - errors on methods with identical selectors but differing argument - and/or return types. We do not do this for @implementations, because - C/C++ will do it for us (i.e., there will be duplicate function - definition errors). */ - if ((TREE_CODE (class) == CLASS_INTERFACE_TYPE - || TREE_CODE (class) == CATEGORY_INTERFACE_TYPE) - /* APPLE LOCAL radar 5370783 */ - && !comp_proto_with_proto (method, mth, 2)) - error ("duplicate declaration of method %<%c%s%>", - is_class ? '+' : '-', - IDENTIFIER_POINTER (METHOD_SEL_NAME (mth))); - } - - if (is_class) - add_method_to_hash_list (cls_method_hash_list, method); - else - { - add_method_to_hash_list (nst_method_hash_list, method); - - /* Instance methods in root classes (and categories thereof) - may act as class methods as a last resort. We also add - instance methods listed in @protocol declarations to - the class hash table, on the assumption that @protocols - may be adopted by root classes or categories. */ - if (TREE_CODE (class) == CATEGORY_INTERFACE_TYPE - || TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE) - class = lookup_interface (CLASS_NAME (class)); - - if (TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE - || !CLASS_SUPER_NAME (class)) - add_method_to_hash_list (cls_method_hash_list, method); - } - - return method; -} - -static tree -add_class (tree class_name, tree name) -{ - struct interface_tuple **slot; - - /* Put interfaces on list in reverse order. */ - TREE_CHAIN (class_name) = interface_chain; - interface_chain = class_name; - - if (interface_htab == NULL) - interface_htab = htab_create_ggc (31, hash_interface, eq_interface, NULL); - slot = (struct interface_tuple **) - htab_find_slot_with_hash (interface_htab, name, - IDENTIFIER_HASH_VALUE (name), - INSERT); - if (!*slot) - { - *slot = (struct interface_tuple *) ggc_alloc_cleared (sizeof (struct interface_tuple)); - (*slot)->id = name; - } - (*slot)->class_name = class_name; - - return interface_chain; -} - -/* APPLE LOCAL begin radar 4548636 */ -/* This routine updates TREE_DEPRECATED/TREE_UNAVAILABLE fields of 'record' - type of the class. */ -static void -objc_attach_attrs_to_type (tree type, tree class) -{ - tree chain; - - if (!CLASS_ATTRIBUTES (class)) - return; /* The most common case. */ - - for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) - { - if (is_attribute_p ("deprecated", TREE_PURPOSE (chain))) - TREE_DEPRECATED (type) = 1; - else if (is_attribute_p ("unavailable", TREE_PURPOSE (chain))) - TREE_UNAVAILABLE (type) = 1; - } - return; -} - -/* Warn when a 'class' with deprecated/available attribute - set is used. */ - -static void -objc_warn_on_class_attributes (tree class, bool use) -{ - tree chain; - - if (!class || !CLASS_ATTRIBUTES (class)) - return; /* The most common case. */ - for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) - { - if (is_attribute_p ("deprecated", TREE_PURPOSE (chain))) - { - if (use) - warning (0, "class %qs is deprecated", - IDENTIFIER_POINTER (CLASS_NAME (class))); - } - else if (is_attribute_p ("unavailable", TREE_PURPOSE (chain))) - { - if (use) - warning (0, "class %qs is unavailable", - IDENTIFIER_POINTER (CLASS_NAME (class))); - } - /* APPLE LOCAL begin radar 4705298, 48431458 */ - else if (!use && is_attribute_p ("visibility", TREE_PURPOSE (chain))) - { - tree id = TREE_VALUE (TREE_VALUE ((chain))); - const char *attr_arg = TREE_STRING_POINTER (id); - if (strcmp (attr_arg, "hidden") && strcmp (attr_arg, "default")) - warning (0, "only \"hidden\" or \"default\" visibility attribute allowed on a class"); - return; - } - /* APPLE LOCAL end radar 4705298, 48431458 */ - /* APPLE LOCAL begin radar 5008110 */ - else if (is_attribute_p ("objc_exception", TREE_PURPOSE (chain))) - ; - /* APPLE LOCAL end radar 5008110 */ - /* APPLE LOCAL begin radar 7865106 */ - else if (is_attribute_p ("weak_import", TREE_PURPOSE (chain))) - ; - /* APPLE LOCAL end radar 7865106 */ - else if (!use) - warning (0, "attribute %s is unknown - ignored", - IDENTIFIER_POINTER (TREE_PURPOSE (chain))); - } - return; -} -/* APPLE LOCAL end radar 4548636 */ - -static void -add_category (tree class, tree category) -{ - /* Put categories on list in reverse order. */ - tree cat = lookup_category (class, CLASS_SUPER_NAME (category)); - - if (cat) - { - warning (0, "duplicate interface declaration for category %<%s(%s)%>", - IDENTIFIER_POINTER (CLASS_NAME (class)), - IDENTIFIER_POINTER (CLASS_SUPER_NAME (category))); - } - else - { - CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (class); - CLASS_CATEGORY_LIST (class) = category; - } - /* APPLE LOCAL radar 4548636 */ - objc_warn_on_class_attributes (class, true); -} - -/* Called after parsing each instance variable declaration. Necessary to - preserve typedefs and implement public/private... - - PUBLIC is 1 for public, 0 for protected, and 2 for private. */ - -static tree -add_instance_variable (tree class, int public, tree field_decl) -{ - tree field_type = TREE_TYPE (field_decl); - const char *ivar_name = DECL_NAME (field_decl) - ? IDENTIFIER_POINTER (DECL_NAME (field_decl)) - : "<unnamed>"; - -#ifdef OBJCPLUS - if (TREE_CODE (field_type) == REFERENCE_TYPE) - { - error ("illegal reference type specified for instance variable %qs", - ivar_name); - /* Return class as is without adding this ivar. */ - return class; - } -#endif - - if (field_type == error_mark_node || !TYPE_SIZE (field_type) - || TYPE_SIZE (field_type) == error_mark_node) - /* 'type[0]' is allowed, but 'type[]' is not! */ - { - error ("instance variable %qs has unknown size", ivar_name); - /* Return class as is without adding this ivar. */ - return class; - } - -#ifdef OBJCPLUS - /* Check if the ivar being added has a non-POD C++ type. If so, we will - need to either (1) warn the user about it or (2) generate suitable - constructor/destructor call from '- .cxx_construct' or '- .cxx_destruct' - methods (if '-fobjc-call-cxx-cdtors' was specified). */ - if (IS_AGGR_TYPE (field_type) - && (TYPE_NEEDS_CONSTRUCTING (field_type) - || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type) - || TYPE_POLYMORPHIC_P (field_type))) - { - const char *type_name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (field_type)); - - if (flag_objc_call_cxx_cdtors) - { - /* Since the ObjC runtime will be calling the constructors and - destructors for us, the only thing we can't handle is the lack - of a default constructor. */ - if (TYPE_NEEDS_CONSTRUCTING (field_type) - && !TYPE_HAS_DEFAULT_CONSTRUCTOR (field_type)) - { - warning (0, "type %qs has no default constructor to call", - type_name); - - /* If we cannot call a constructor, we should also avoid - calling the destructor, for symmetry. */ - if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type)) - warning (0, "destructor for %qs shall not be run either", - type_name); - } - } - else - { - static bool warn_cxx_ivars = false; - - if (TYPE_POLYMORPHIC_P (field_type)) - { - /* Vtable pointers are Real Bad(tm), since Obj-C cannot - initialize them. */ - error ("type %qs has virtual member functions", type_name); - error ("illegal aggregate type %qs specified " - "for instance variable %qs", - type_name, ivar_name); - /* Return class as is without adding this ivar. */ - return class; - } - - /* User-defined constructors and destructors are not known to Obj-C - and hence will not be called. This may or may not be a problem. */ - if (TYPE_NEEDS_CONSTRUCTING (field_type)) - warning (0, "type %qs has a user-defined constructor", type_name); - if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type)) - warning (0, "type %qs has a user-defined destructor", type_name); - - if (!warn_cxx_ivars) - { - warning (0, "C++ constructors and destructors will not " - "be invoked for Objective-C fields"); - warn_cxx_ivars = true; - } - } - } -#endif - - /* Overload the public attribute, it is not used for FIELD_DECLs. */ - switch (public) - { - case 0: - TREE_PUBLIC (field_decl) = 0; - TREE_PRIVATE (field_decl) = 0; - TREE_PROTECTED (field_decl) = 1; - /* APPLE LOCAL radar 4951615 */ - IVAR_PUBLIC_OR_PROTECTED (field_decl) = 1; - break; - - /* APPLE LOCAL radar 4564694 */ - case 3: /* @package */ - case 1: - TREE_PUBLIC (field_decl) = 1; - /* APPLE LOCAL radar 4951615, radar 4564694 */ - IVAR_PUBLIC_OR_PROTECTED (field_decl) = (flag_objc_abi == 2 && public == 3) ? 0 : 1; - TREE_PRIVATE (field_decl) = 0; - TREE_PROTECTED (field_decl) = 0; - break; - - case 2: - TREE_PUBLIC (field_decl) = 0; - TREE_PRIVATE (field_decl) = 1; - TREE_PROTECTED (field_decl) = 0; - /* APPLE LOCAL radar 4951615 */ - IVAR_PUBLIC_OR_PROTECTED (field_decl) = 0; - break; - - } - - CLASS_RAW_IVARS (class) = chainon (CLASS_RAW_IVARS (class), field_decl); - - return class; -} - -static tree -is_ivar (tree decl_chain, tree ident) -{ - for ( ; decl_chain; decl_chain = TREE_CHAIN (decl_chain)) - if (DECL_NAME (decl_chain) == ident) - return decl_chain; - return NULL_TREE; -} - -/* APPLE LOCAL begin radar 4653319 */ -/* Just like is_ivar, except it also looks into inheritance chain. */ - -static tree -nested_ivar_lookup (tree interface, tree ident) -{ - tree ivar_chain = CLASS_IVARS (interface); - tree res = is_ivar (ivar_chain, ident); - if (res) - return res; - - while (CLASS_SUPER_NAME (interface)) - { - interface = lookup_interface (CLASS_SUPER_NAME (interface)); - if (interface) - return nested_ivar_lookup (interface, ident); - } - return res; -} - -/* APPLE LOCAL end radar 4653319 */ - -/* True if the ivar is private and we are not in its implementation. */ - -static int -is_private (tree decl) -{ - return (TREE_PRIVATE (decl) - && ! is_ivar (CLASS_IVARS (implementation_template), - DECL_NAME (decl))); -} - -/* We have an instance variable reference;, check to see if it is public. */ - -int -objc_is_public (tree expr, tree identifier) -{ - tree basetype, decl; - -#ifdef OBJCPLUS - if (processing_template_decl) - return 1; -#endif - /* APPLE LOCAL begin radar 4862848 */ - if (expr == error_mark_node) - return 0; - /* APPLE LOCAL end radar 4862848 */ - - if (TREE_TYPE (expr) == error_mark_node) - return 1; - - basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr)); - - if (basetype && TREE_CODE (basetype) == RECORD_TYPE) - { - if (TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype)) - { - tree class = lookup_interface (OBJC_TYPE_NAME (basetype)); - - if (!class) - { - error ("cannot find interface declaration for %qs", - IDENTIFIER_POINTER (OBJC_TYPE_NAME (basetype))); - return 0; - } - - if ((decl = is_ivar (get_class_ivars (class, true), identifier))) - { - if (TREE_PUBLIC (decl)) - return 1; - - /* Important difference between the Stepstone translator: - all instance variables should be public within the context - of the implementation. */ - if (objc_implementation_context - && ((TREE_CODE (objc_implementation_context) - == CLASS_IMPLEMENTATION_TYPE) - || (TREE_CODE (objc_implementation_context) - == CATEGORY_IMPLEMENTATION_TYPE))) - { - tree curtype = TYPE_MAIN_VARIANT - (CLASS_STATIC_TEMPLATE - (implementation_template)); - - if (basetype == curtype - || DERIVED_FROM_P (basetype, curtype)) - { - int private = is_private (decl); - - if (private) - error ("instance variable %qs is declared private", - IDENTIFIER_POINTER (DECL_NAME (decl))); - - return !private; - } - } - - /* The 2.95.2 compiler sometimes allowed C functions to access - non-@public ivars. We will let this slide for now... */ - if (!objc_method_context) - { - /* APPLE LOCAL begin radar 4805612 */ - /* Now must allow access to private/protected ivar through an object - pointer in a nested C function. */ - if (objc_interface_context && - (TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE - || TREE_CODE (objc_interface_context) == CATEGORY_INTERFACE_TYPE)) - { - /* APPLE LOCAL begin radar 5471096 */ - tree class = - TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE - ? objc_interface_context - : lookup_interface (CLASS_NAME (objc_interface_context)); - tree curtype = - TYPE_MAIN_VARIANT (CLASS_STATIC_TEMPLATE (class)); - /* APPLE LOCAL end radar 5471096 */ - if (basetype == curtype - || DERIVED_FROM_P (basetype, curtype)) - { - int private; - gcc_assert (!implementation_template); - implementation_template = objc_interface_context; /* ref'ed in is_private */ - private = is_private (decl); - implementation_template = NULL_TREE; - if (private) - error ("instance variable %qs is declared private", - IDENTIFIER_POINTER (DECL_NAME (decl))); - return !private; - } - } - /* APPLE LOCAL end radar 4805612 */ - warning (0, "instance variable %qs is %s; " - "this will be a hard error in the future", - IDENTIFIER_POINTER (identifier), - TREE_PRIVATE (decl) ? "@private" : "@protected"); - return 1; - } - - error ("instance variable %qs is declared %s", - IDENTIFIER_POINTER (identifier), - TREE_PRIVATE (decl) ? "private" : "protected"); - return 0; - } - } - } - - return 1; -} -/* APPLE LOCAL begin radar 4568791 */ -/* This routine gets called when there is no implementation of method declared - in protocol in current class. This used to cause a warning, but now rules - are relaxed so if the method has been declared in an inherited class no warning - will be issued. -*/ -static bool -objc_method_inherited (tree meth, int mtype, tree interface) -{ - tree list; - tree inter = interface; - - while ((inter = lookup_interface (CLASS_SUPER_NAME (inter)))) - { - list = (mtype == '+') ? CLASS_CLS_METHODS (inter) - : CLASS_NST_METHODS (inter); - if (lookup_method (list, meth)) - return true; - } - - return false; -} -/* APPLE LOCAL end radar 4568791 */ - -/* APPLE LOCAL begin radar 4449535 */ -/* This routine checks to see if class implements forwardInvocation method and objects - of this class are derived from 'NSProxy' so that to forward requests from one object - to another. It then returns 'true' or 'false' accordingly. - Under such conditions, which means that every method possible is implemented in the class, - gcc should not issue "Method definition not found" warnings. -*/ -static bool -objc_impl_forwardInvocation (tree context) -{ - tree inherit; - if (fast_lookup_method (false, context, get_identifier ("forwardInvocation:")) - == NULL_TREE) - return false; - inherit = lookup_interface (CLASS_SUPER_NAME (context)); - while (inherit) - { - if (!strcmp (IDENTIFIER_POINTER (CLASS_NAME (inherit)), "NSProxy")) - return true; - inherit = lookup_interface (CLASS_SUPER_NAME (inherit)); - } - return false; -} -/* APPLE LOCAL end radar 4449535 */ - -/* APPLE LOCAL begin radar 5453108 */ -/* This routine checks to see if there is a setter/getter method declared in current - class. If so, it returns 'true' so caller does not issue a warning. This is - the case of a method declared in class's protocol which matches class's getter/settter. -*/ -static bool -property_method_in_class (tree meth, bool inst_method, tree interface) -{ - tree list, property_method; - if (!interface || !inst_method) - return false; - list = CLASS_NST_METHODS (interface); - - property_method = lookup_method (list, meth); - return (property_method && - METHOD_PROPERTY_CONTEXT (property_method) != NULL); -} -/* APPLE LOCAL end radar 5453108 */ -/* Make sure all entries in CHAIN are also in LIST. */ - -static int -/* APPLE LOCAL radar 4568791, 4359757 */ -check_methods (tree chain, int mtype, tree interface) -{ - int first = 1; - - while (chain) - { - /* APPLE LOCAL begin radar 4359757 */ - if (!fast_lookup_method (mtype == (int)'+', - objc_implementation_context, METHOD_SEL_NAME (chain))) - /* APPLE LOCAL end radar 4359757 */ - { - /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ - /* APPLE LOCAL begin radar 5453108 */ - if (chain != NULL && (METHOD_PROPERTY_CONTEXT (chain) != NULL_TREE || - property_method_in_class (chain, mtype == (int)'-', interface))) - /* APPLE LOCAL end radar 5453108 */ - { - /* Case of instance method in interface not found in its implementation. - This is OK in case of instance method setter/getter declaration synthesized - via property declaration in the interface. Happens for dynamic properties. */ - gcc_assert (mtype == (int)'-'); - chain = TREE_CHAIN (chain); - continue; - } - /* APPLE LOCAL end C* property metadata (Radar 4498373) */ - /* APPLE LOCAL begin radar 4568791 */ - else if (interface && objc_method_inherited (chain, mtype, interface)) - { - /* Don't issue the warning if method declared in protocol has been - declared in the inheritance heirarchy. */ - chain = TREE_CHAIN (chain); - continue; - } - /* APPLE LOCAL end radar 4568791 */ - if (first) - { - if (TREE_CODE (objc_implementation_context) - == CLASS_IMPLEMENTATION_TYPE) - warning (0, "incomplete implementation of class %qs", - IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context))); - else if (TREE_CODE (objc_implementation_context) - == CATEGORY_IMPLEMENTATION_TYPE) - warning (0, "incomplete implementation of category %qs", - IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context))); - first = 0; - } - - warning (0, "method definition for %<%c%s%> not found", - mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain))); - } - - chain = TREE_CHAIN (chain); - } - - return first; -} - -/* Check if CLASS, or its superclasses, explicitly conforms to PROTOCOL. */ - -static int -conforms_to_protocol (tree class, tree protocol) -{ - if (TREE_CODE (protocol) == PROTOCOL_INTERFACE_TYPE) - { - tree p = CLASS_PROTOCOL_LIST (class); - while (p && TREE_VALUE (p) != protocol) - p = TREE_CHAIN (p); - - if (!p) - { - tree super = (CLASS_SUPER_NAME (class) - ? lookup_interface (CLASS_SUPER_NAME (class)) - : NULL_TREE); - int tmp = super ? conforms_to_protocol (super, protocol) : 0; - if (!tmp) - return 0; - } - } - - return 1; -} - -/* Make sure all methods in CHAIN are accessible as MTYPE methods in - CONTEXT. This is one of two mechanisms to check protocol integrity. */ - -static int -check_methods_accessible (tree chain, tree context, int mtype) -{ - int first = 1; - tree list; - tree base_context = context; - - while (chain) - { - /* APPLE LOCAL begin radar 4963113 */ - if (chain != NULL && METHOD_PROPERTY_CONTEXT (chain) != NULL_TREE) - { - /* Case of an accessor in protocol not implemented in @implementation. - This is OK when property is declared dynamic. So, with -Wno-protocol - no warning must be issued. Cousin of radar 4498373 */ - gcc_assert (mtype == (int)'-'); - gcc_assert (TREE_CODE (METHOD_PROPERTY_CONTEXT (chain)) == PROPERTY_DECL); - chain = TREE_CHAIN (chain); - continue; - } - /* APPLE LOCAL end radar 4963113 */ - context = base_context; - while (context) - { - if (mtype == '+') - list = CLASS_CLS_METHODS (context); - else - list = CLASS_NST_METHODS (context); - - if (lookup_method (list, chain)) - break; - - else if (TREE_CODE (context) == CLASS_IMPLEMENTATION_TYPE - || TREE_CODE (context) == CLASS_INTERFACE_TYPE) - context = (CLASS_SUPER_NAME (context) - ? lookup_interface (CLASS_SUPER_NAME (context)) - : NULL_TREE); - - else if (TREE_CODE (context) == CATEGORY_IMPLEMENTATION_TYPE - || TREE_CODE (context) == CATEGORY_INTERFACE_TYPE) - context = (CLASS_NAME (context) - ? lookup_interface (CLASS_NAME (context)) - : NULL_TREE); - else - abort (); - } - - if (context == NULL_TREE) - { - if (first) - { - if (TREE_CODE (objc_implementation_context) - == CLASS_IMPLEMENTATION_TYPE) - warning (0, "incomplete implementation of class %qs", - IDENTIFIER_POINTER - (CLASS_NAME (objc_implementation_context))); - else if (TREE_CODE (objc_implementation_context) - == CATEGORY_IMPLEMENTATION_TYPE) - warning (0, "incomplete implementation of category %qs", - IDENTIFIER_POINTER - (CLASS_SUPER_NAME (objc_implementation_context))); - first = 0; - } - warning (0, "method definition for %<%c%s%> not found", - mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain))); - } - - chain = TREE_CHAIN (chain); /* next method... */ - } - return first; -} - -/* Check whether the current interface (accessible via - 'objc_implementation_context') actually implements protocol P, along - with any protocols that P inherits. */ - -static void -/* APPLE LOCAL radar 4568791 */ -check_protocol (tree p, const char *type, const char *name, tree interface) -{ - if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) - { - /* APPLE LOCAL radar 4449535 */ - int f1, f2=1; - - /* Ensure that all protocols have bodies! */ - if (warn_protocol) - { - f1 = check_methods (PROTOCOL_CLS_METHODS (p), - /* APPLE LOCAL radar 4359757 */ - /* argument removed */ - /* APPLE LOCAL radar 4568791 */ - '+', interface); - /* APPLE LOCAL begin radar 4449535 */ - if (!objc_impl_forwardInvocation (objc_implementation_context)) - f2 = check_methods (PROTOCOL_NST_METHODS (p), - /* APPLE LOCAL radar 4359757 */ - /* argument removed */ - /* APPLE LOCAL radar 4568791 */ - '-', interface); - /* APPLE LOCAL end radar 4449535 */ - } - else - { - f1 = check_methods_accessible (PROTOCOL_CLS_METHODS (p), - objc_implementation_context, - '+'); - /* APPLE LOCAL begin radar 4449535 */ - if (!objc_impl_forwardInvocation (objc_implementation_context)) - f2 = check_methods_accessible (PROTOCOL_NST_METHODS (p), - objc_implementation_context, - '-'); - /* APPLE LOCAL end radar 4449535 */ - } - - if (!f1 || !f2) - warning (0, "%s %qs does not fully implement the %qs protocol", - type, name, IDENTIFIER_POINTER (PROTOCOL_NAME (p))); - } - - /* Check protocols recursively. */ - if (PROTOCOL_LIST (p)) - { - tree subs = PROTOCOL_LIST (p); - tree super_class = - lookup_interface (CLASS_SUPER_NAME (implementation_template)); - - while (subs) - { - tree sub = TREE_VALUE (subs); - - /* If the superclass does not conform to the protocols - inherited by P, then we must! */ - if (!super_class || !conforms_to_protocol (super_class, sub)) - /* APPLE LOCAL radar 4568791 */ - check_protocol (sub, type, name, interface); - subs = TREE_CHAIN (subs); - } - } -} - -/* Check whether the current interface (accessible via - 'objc_implementation_context') actually implements the protocols listed - in PROTO_LIST. */ - -static void -/* APPLE LOCAL radar 4568791 */ -check_protocols (tree proto_list, const char *type, const char *name, tree interface) -{ - for ( ; proto_list; proto_list = TREE_CHAIN (proto_list)) - { - tree p = TREE_VALUE (proto_list); - - /* APPLE LOCAL radar 4568791 */ - check_protocol (p, type, name, interface); - } -} - -/* Make sure that the class CLASS_NAME is defined - CODE says which kind of thing CLASS_NAME ought to be. - It can be CLASS_INTERFACE_TYPE, CLASS_IMPLEMENTATION_TYPE, - CATEGORY_INTERFACE_TYPE, or CATEGORY_IMPLEMENTATION_TYPE. */ - -static tree -start_class (enum tree_code code, tree class_name, tree super_name, - tree protocol_list) -{ - /* APPLE LOCAL radar 5835805 */ - tree class, decl, aliased_class_name; - -#ifdef OBJCPLUS - if (current_namespace != global_namespace) { - error ("Objective-C declarations may only appear in global scope"); - } -#endif /* OBJCPLUS */ - - if (objc_implementation_context) - { - warning (0, "%<@end%> missing in implementation context"); - finish_class (objc_implementation_context); - objc_ivar_chain = NULL_TREE; - objc_implementation_context = NULL_TREE; - } - - class = make_node (code); - TYPE_LANG_SLOT_1 (class) = make_tree_vec (CLASS_LANG_SLOT_ELTS); - - /* Check for existence of the super class, if one was specified. Note - that we must have seen an @interface, not just a @class. If we - are looking at a @compatibility_alias, traverse it first. */ - if ((code == CLASS_INTERFACE_TYPE || code == CLASS_IMPLEMENTATION_TYPE) - && super_name) - { - tree super = objc_is_class_name (super_name); - /* APPLE LOCAL begin radar 4548636 */ - tree super_interface = NULL_TREE; - if (!super || !(super_interface = lookup_interface (super))) - { - error ("cannot find interface declaration for %qs, superclass of %qs", - IDENTIFIER_POINTER (super ? super : super_name), - IDENTIFIER_POINTER (class_name)); - super_name = NULL_TREE; - } - else - { - objc_warn_on_class_attributes (super_interface, true); - super_name = super; - } - /* APPLE LOCAL end radar 4548636 */ - } - /* APPLE LOCAL begin radar 5835805 */ - aliased_class_name = objc_is_class_name (class_name); - if (aliased_class_name) - class_name = aliased_class_name; - /* APPLE LOCAL end radar 5835805 */ - CLASS_NAME (class) = class_name; - CLASS_SUPER_NAME (class) = super_name; - CLASS_CLS_METHODS (class) = NULL_TREE; - - /* APPLE LOCAL radar 4695109 */ - /* PROTOCOL_IMPLEMENTATION_TYPE removed */ - /* APPLE LOCAL radar 5835805 */ - if (!aliased_class_name - && (decl = lookup_name (class_name))) - { - error ("%qs redeclared as different kind of symbol", - IDENTIFIER_POINTER (class_name)); - error ("previous declaration of %q+D", - decl); - } - - if (code == CLASS_IMPLEMENTATION_TYPE) - { - { - tree chain; - - for (chain = implemented_classes; chain; chain = TREE_CHAIN (chain)) - if (TREE_VALUE (chain) == class_name) - { - error ("reimplementation of class %qs", - IDENTIFIER_POINTER (class_name)); - /* APPLE LOCAL radar 4689268 */ - return class; - } - implemented_classes = tree_cons (NULL_TREE, class_name, - implemented_classes); - } - - /* Reset for multiple classes per file. */ - method_slot = 0; - - objc_implementation_context = class; - - /* Lookup the interface for this implementation. */ - - if (!(implementation_template = lookup_interface (class_name))) - { - warning (0, "cannot find interface declaration for %qs", - IDENTIFIER_POINTER (class_name)); - add_class (implementation_template = objc_implementation_context, - class_name); - } - - /* If a super class has been specified in the implementation, - insure it conforms to the one specified in the interface. */ - - if (super_name - && (super_name != CLASS_SUPER_NAME (implementation_template))) - { - tree previous_name = CLASS_SUPER_NAME (implementation_template); - const char *const name = - previous_name ? IDENTIFIER_POINTER (previous_name) : ""; - /* APPLE LOCAL begin radar 5835805 */ - error ("conflicting super class name %qs in interface %qs and its implementation", - IDENTIFIER_POINTER (super_name), IDENTIFIER_POINTER (class_name)); - if (previous_name) - error ("previous declaration of %qs", name); - /* APPLE LOCAL end radar 5835805 */ - } - - else if (! super_name) - { - CLASS_SUPER_NAME (objc_implementation_context) - = CLASS_SUPER_NAME (implementation_template); - } - } - - else if (code == CLASS_INTERFACE_TYPE) - { - if (lookup_interface (class_name)) - /* APPLE LOCAL begin radar 5835805 */ - error ("duplicate interface declaration for class %qs", - IDENTIFIER_POINTER (class_name)); - /* APPLE LOCAL end radar 5835805 */ - else - add_class (class, class_name); - - if (protocol_list) - CLASS_PROTOCOL_LIST (class) - /* APPLE LOCAL radar 4398221 */ - = lookup_and_install_protocols (protocol_list, true); - } - - else if (code == CATEGORY_INTERFACE_TYPE) - { - tree class_category_is_assoc_with; - - /* For a category, class_name is really the name of the class that - the following set of methods will be associated with. We must - find the interface so that can derive the objects template. */ - - if (!(class_category_is_assoc_with = lookup_interface (class_name))) - { - error ("cannot find interface declaration for %qs", - IDENTIFIER_POINTER (class_name)); - exit (FATAL_EXIT_CODE); - } - else - add_category (class_category_is_assoc_with, class); - - if (protocol_list) - CLASS_PROTOCOL_LIST (class) - /* APPLE LOCAL radar 4398221 */ - = lookup_and_install_protocols (protocol_list, true); - } - - else if (code == CATEGORY_IMPLEMENTATION_TYPE) - { - /* Reset for multiple classes per file. */ - method_slot = 0; - - objc_implementation_context = class; - - /* For a category, class_name is really the name of the class that - the following set of methods will be associated with. We must - find the interface so that can derive the objects template. */ - - if (!(implementation_template = lookup_interface (class_name))) - { - error ("cannot find interface declaration for %qs", - IDENTIFIER_POINTER (class_name)); - exit (FATAL_EXIT_CODE); - } - } - return class; -} - -static tree -continue_class (tree class) -{ - if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE - || TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE) - { - struct imp_entry *imp_entry; - - /* Check consistency of the instance variables. */ - - if (CLASS_RAW_IVARS (class)) - check_ivars (implementation_template, class); - - /* code generation */ - -#ifdef OBJCPLUS - push_lang_context (lang_name_c); -#endif - - build_private_template (implementation_template); - uprivate_record = CLASS_STATIC_TEMPLATE (implementation_template); - objc_instance_type = build_pointer_type (uprivate_record); - - /* APPLE LOCAL radar 4551602 */ - imp_entry = (struct imp_entry *) ggc_alloc_cleared (sizeof (struct imp_entry)); - - imp_entry->next = imp_list; - imp_entry->imp_context = class; - imp_entry->imp_template = implementation_template; - - /* APPLE LOCAL begin ObjC new abi */ - if (flag_objc_abi == 2) - { - synth_v2_forward_declarations (); - imp_entry->class_v2_decl = UOBJC_V2_CLASS_decl; - imp_entry->meta_v2_decl = UOBJC_V2_METACLASS_decl; - } - else - { - synth_forward_declarations (); - imp_entry->class_decl = UOBJC_CLASS_decl; - imp_entry->meta_decl = UOBJC_METACLASS_decl; - } - /* APPLE LOCAL end ObjC new abi */ - imp_entry->has_cxx_cdtors = 0; - - /* Append to front and increment count. */ - imp_list = imp_entry; - if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE) - imp_count++; - else - cat_count++; - -#ifdef OBJCPLUS - pop_lang_context (); -#endif /* OBJCPLUS */ - - return get_class_ivars (implementation_template, true); - } - - else if (TREE_CODE (class) == CLASS_INTERFACE_TYPE) - { -#ifdef OBJCPLUS - push_lang_context (lang_name_c); -#endif /* OBJCPLUS */ - - /* APPLE LOCAL radar 4291785 */ - objc_collecting_ivars = 1; - build_private_template (class); - /* APPLE LOCAL radar 4291785 */ - objc_collecting_ivars = 0; - -#ifdef OBJCPLUS - pop_lang_context (); -#endif /* OBJCPLUS */ - - return NULL_TREE; - } - /* APPLE LOCAL radar 4695109 */ - /* PROTOCOL_IMPLEMENTATION_TYPE removed */ - - else - return error_mark_node; -} - -/* APPLE LOCAL begin objc new property */ -/* This routine issues diagnostics on two mismatched properties passed as argument. - - CL_PROP class property - - PROPERTY is declared in 'super' class (SUPER is true) or protocol (SUPER is false). - - MESS is the string attached to the diagnostic. - - NAME property name. -*/ -static void -/* APPLE LOCAL radar 5218071 */ -diagnose_property_mismatch (tree cl_prop, bool super, tree property, const char *mess, tree name) -{ - /* Check that attributes and types match for protocol and its conforming class. */ - /* APPLE LOCAL begin radar 4815061 */ - if (PROPERTY_READONLY (cl_prop) == boolean_true_node - && PROPERTY_READWRITE (property) == boolean_true_node) - warning (0, "attribute 'readonly' of property %qs restricts attribute 'readwrite' of %qs property in %s", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), - IDENTIFIER_POINTER (name), mess); - /* APPLE LOCAL end radar 4815061 */ - if (PROPERTY_COPY (cl_prop) != PROPERTY_COPY (property)) - warning (0, "property %qs 'copy' attribute does not match %s %qs property", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - else if (PROPERTY_RETAIN (cl_prop) != PROPERTY_RETAIN (property)) - warning (0, "property %qs 'retain' attribute does not match %s %qs property", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - if (PROPERTY_SETTER_NAME (cl_prop) != PROPERTY_SETTER_NAME (property)) - warning (0, "property %qs 'setter' attribute does not match %s %qs property", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - if (PROPERTY_GETTER_NAME (cl_prop) != PROPERTY_GETTER_NAME (property)) - warning (0, "property %qs 'getter' attribute does not match %s %qs property", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - /* APPLE LOCAL begin radar 5218071 */ - if (comptypes (TREE_TYPE (cl_prop), TREE_TYPE (property)) != 1) { - if (super && - PROPERTY_READONLY (cl_prop) == boolean_true_node && - PROPERTY_READONLY (property) == boolean_true_node && - objc_compare_types (TREE_TYPE (cl_prop), TREE_TYPE (property), - /* APPLE LOCAL radar 6231433 */ - -6, NULL_TREE, NULL)) - ; - else - warning (0, "property %qs type does not match %s %qs property type", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - } - /* APPLE LOCAL end radar 5218071 */ - if (flag_objc_gc && - objc_is_gcable_type (TREE_TYPE (cl_prop)) != objc_is_gcable_type (TREE_TYPE (property))) - warning (0, "property %qs storage type does not match %s %qs property storage type", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - /* APPLE LOCAL begin radar 4947014 - objc atomic property */ - if (IS_ATOMIC (cl_prop) != IS_ATOMIC (property)) - warning (0, "property %qs and its %s %qs don't have matching 'atomic' attribute", - IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, - IDENTIFIER_POINTER (name)); - /* APPLE LOCAL end radar 4947014 - objc atomic property */ -} - -/* This routine goes through list of 'super' class's property list and diagnoses attribute - mismatch between those and the same properties declared in the class. */ - -static void -objc_compare_properties_with_super (tree class) -{ - tree super; - tree property, cl_prop; - - if (CLASS_SUPER_NAME (class) == NULL_TREE) - return; - super = lookup_interface (CLASS_SUPER_NAME (class)); - if (super == NULL_TREE) - return; - for (property = CLASS_PROPERTY_DECL (super); property; - property = TREE_CHAIN (property)) - if ((cl_prop = lookup_property_in_list (class, DECL_NAME (property)))) - /* APPLE LOCAL radar 5218071 */ - diagnose_property_mismatch (cl_prop, true, property, "super class", CLASS_NAME (super)); -} -/* APPLE LOCAL end objc new property */ - -/* APPLE LOCAL begin radar 4564386 */ -/* This routine merges all properties declared in protocol but not - in the class to the class. */ - -static void -objc_merge_proto_properties_in_class (tree class, tree rproto_list) -{ - tree rproto; - for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) - { - tree p = TREE_VALUE (rproto); - if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) - { - /* APPLE LOCAL objc new property */ - tree property, cl_prop; - for (property = CLASS_PROPERTY_DECL (p); property; - property = TREE_CHAIN (property)) - /* APPLE LOCAL objc new property */ - if (!(cl_prop = lookup_property_in_list (class, DECL_NAME (property)))) - { - /* Add the property found in protocol but not in the class to - the class's list of properties. */ - tree x = copy_node (property); - TREE_CHAIN (x) = IMPL_PROPERTY_DECL (class); - IMPL_PROPERTY_DECL (class) = x; - } - /* APPLE LOCAL begin objc new property */ - else - /* APPLE LOCAL radar 5218071 */ - diagnose_property_mismatch (cl_prop, false, property, "protocol", PROTOCOL_NAME (p)); - /* APPLE LOCAL end objc new property */ - /* Search in nested protocols also. */ - objc_merge_proto_properties_in_class (class, PROTOCOL_LIST (p)); - } - } -} -/* APPLE LOCAL end radar 4564386 */ - -/* APPLE LOCAL begin C* language */ -/* This routine builds a property ivar name. */ - -static char * -objc_build_property_ivar_name (tree property_decl) -{ - static char string[BUFSIZE]; - sprintf (string, "_%s", IDENTIFIER_POINTER (PROPERTY_NAME (property_decl))); - return string; -} - -/* This routine builds name of the setter synthesized function. */ - -static char * -objc_build_property_setter_name (tree ident, bool delimit_colon) -{ - extern int toupper(int); - static char string[BUFSIZE]; - if (delimit_colon) - sprintf (string, "set%s:", IDENTIFIER_POINTER (ident)); - else - sprintf (string, "set%s", IDENTIFIER_POINTER (ident)); - string[3] = toupper (string[3]); - return string; -} - -/* This routine does all the work for generting data and code per each - property declared in current implementation. */ - -static void -objc_gen_one_property_data (tree class, tree property, tree class_methods) -{ - /* If getter, check that it is already declared in user code. */ - if (PROPERTY_GETTER_NAME (property)) - { - if (!lookup_method (CLASS_NST_METHODS (class_methods), - PROPERTY_GETTER_NAME (property)) - && !lookup_method_in_protocol_list (CLASS_PROTOCOL_LIST (class_methods), - PROPERTY_GETTER_NAME (property), 0)) - error ("property getter %qs not declared in class %qs", - IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (property)), - IDENTIFIER_POINTER (CLASS_NAME (class_methods))); - } - /* If setter, check that it is already declared in user code. */ - if (PROPERTY_SETTER_NAME (property)) - { - if (!lookup_method (CLASS_NST_METHODS (class_methods), - PROPERTY_SETTER_NAME (property)) - && !lookup_method_in_protocol_list (CLASS_PROTOCOL_LIST (class_methods), - PROPERTY_SETTER_NAME (property), 0)) - error ("property setter %qs not declared in class %qs", - IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (property)), - IDENTIFIER_POINTER (CLASS_NAME (class_methods))); - } - /* If ivar attribute specified, check that it is already declared. */ - if (PROPERTY_IVAR_NAME (property) - && PROPERTY_IVAR_NAME (property) != boolean_true_node) - { - if (!nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property))) - error ("ivar %qs in property declaration must be an existing ivar", - IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (property))); - } -} - -/* This routine processes an existing getter or setter attribute. - It aliases internal property getter or setter to the user implemented - getter or setter. */ - -static void -objc_process_getter_setter (tree class, tree property, bool getter) -{ - tree prop_mth_decl; - tree prop_getter_mth_decl; - tree name_ident; - - if (getter) - /* getter name is same as property name. */ - name_ident = PROPERTY_NAME (property); - else - /* Must synthesize setter name from property name. */ - name_ident = get_identifier (objc_build_property_setter_name ( - PROPERTY_NAME (property), true)); - - /* Find declaration of instance method for the property in its class. */ - prop_mth_decl = lookup_method (CLASS_NST_METHODS (class), name_ident); - - if (!prop_mth_decl) - return; - - prop_getter_mth_decl = lookup_method (CLASS_NST_METHODS (objc_implementation_context), - getter ? PROPERTY_GETTER_NAME (property) - : PROPERTY_SETTER_NAME (property)); - - if (!prop_getter_mth_decl) - return; - - /* APPLE LOCAL radar 5370783 */ - if (!match_proto_with_proto (prop_getter_mth_decl, prop_mth_decl, 2)) - { - error ("User %s %qs does not match property %qs type", - getter ? "getter" : "setter", - IDENTIFIER_POINTER (DECL_NAME (prop_getter_mth_decl)), - IDENTIFIER_POINTER (PROPERTY_NAME (property))); - return; - } - /* We alias internal property getter to the user implemented getter by copying relevant - entries from user's implementation to the internal one. */ - prop_mth_decl = copy_node (prop_mth_decl); - METHOD_ENCODING (prop_mth_decl) = METHOD_ENCODING (prop_getter_mth_decl); - METHOD_DEFINITION (prop_mth_decl) = METHOD_DEFINITION (prop_getter_mth_decl); - objc_add_method (objc_implementation_context, prop_mth_decl, 0, 0); -} - -/* This routine builds the return value of a synthesized getter in a variety - of situations. -*/ -static tree -objc_build_getter_retval (tree ivar_ident) -{ - tree ret_val; - - ret_val = objc_lookup_ivar (NULL_TREE, ivar_ident); - - return ret_val; -} - -/* This routine synthesizes a 'getter' routine. */ - -static void -objc_synthesize_getter (tree class, tree class_method, tree property) -{ - tree fn, decl; - tree body; - tree ret_val; - tree ivar_ident; - - /* No getter for a class with no 'ivar' attribute. */ - if (!PROPERTY_IVAR_NAME (property)) - { - /* Issue a warning if there is no user-implemented getter. */ - if (!lookup_method (CLASS_NST_METHODS ( - objc_implementation_context),PROPERTY_NAME (property))) - { - bool warn = true; - if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - tree category = lookup_category (class, - CLASS_SUPER_NAME (objc_implementation_context)); - if (category - && lookup_method (CLASS_NST_METHODS ( - category),PROPERTY_NAME (property))) - warn = false; - } - if (warn) - warning (0, "no synthesized or user getter is available for property %qs", - IDENTIFIER_POINTER (DECL_NAME (property))); - } - return; - } - - /* If user has implemented a getter with same name then do nothing. */ - if (lookup_method (CLASS_NST_METHODS ( - objc_implementation_context),PROPERTY_NAME (property))) - return; - /* Find declaration of the property in the interface. There must be one. */ - decl = lookup_method (CLASS_NST_METHODS (class_method), - PROPERTY_NAME (property)); - /* If one not declared in the inerface, this condition has already been reported - as user error (because property was not declared in the interface. */ - if (!decl) - return; - - objc_inherit_code = INSTANCE_METHOD_DECL; - objc_start_method_definition (copy_node (decl), NULL_TREE); - body = c_begin_compound_stmt (true); - /* return self->_property_name; */ - /* If user specified an ivar, us it in generation of the getter. */ - ivar_ident = (PROPERTY_IVAR_NAME (property) != boolean_true_node) - ? PROPERTY_IVAR_NAME (property) - : get_identifier (objc_build_property_ivar_name (property)); - ret_val = objc_build_getter_retval (ivar_ident); - - if (ret_val) - { - /* APPLE LOCAL radar 5276085 */ - ret_val = objc_build_weak_reference_tree (ret_val); -#ifdef OBJCPLUS - finish_return_stmt (ret_val); -#else - (void)c_finish_return (ret_val); -#endif - } - add_stmt (c_end_compound_stmt (body, true)); - fn = current_function_decl; -#ifdef OBJCPLUS - finish_function (); -#endif - objc_finish_method_definition (fn); - -} - -/* This routine builds a single statement in a synthesized 'setter' function - in a variety of situations. */ - -static tree -objc_build_setter_stmt (tree ivar_ident) -{ - tree lhs; - - lhs = objc_lookup_ivar (NULL_TREE, ivar_ident); - /* If ivar attribute is not a user declared attribute, this condition has - already been repored as error. */ - gcc_assert (lhs); - - if (lhs) - { - int save_flag_objc_gc = flag_objc_gc; - tree store; - tree rhs = lookup_name (get_identifier ("_value")); - /* Recover when method does not have '_value' argument. This is because user - provided its own accessor and for which an error is already issued. */ - if (!rhs) - rhs = lhs; - /* For 'weak' property, must generate objc_assign_weak regardless of -fobjc-gc */ - flag_objc_gc = 1; - store = build_modify_expr (lhs, NOP_EXPR, rhs); - flag_objc_gc = save_flag_objc_gc; - return store; - } - return NULL_TREE; -} - -/* This routine synthesizes a 'setter' routine. */ - -static void -objc_synthesize_setter (tree class, tree class_method, tree property) -{ - tree fn, decl, ivar_ident, stmt; - tree body; - char *setter_name; - tree setter_ident; - - setter_name = objc_build_property_setter_name ( - PROPERTY_NAME (property), true); - setter_ident = get_identifier (setter_name); - - if (!PROPERTY_IVAR_NAME (property)) - { - /* Issue a warning if there is no user-implemented getter. */ - if (!lookup_method (CLASS_NST_METHODS ( - objc_implementation_context),setter_ident)) - { - bool warn = true; - if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - tree category = lookup_category (class, - CLASS_SUPER_NAME (objc_implementation_context)); - if (category - && lookup_method (CLASS_NST_METHODS ( - category),setter_ident)) - warn = false; - } - if (warn) - warning (0, "no synthesized or user setter is available for property %qs", - IDENTIFIER_POINTER (DECL_NAME (property))); - } - return; - } - - /* If user has implemented a setter with same name then do nothing. */ - if (lookup_method (CLASS_NST_METHODS ( - objc_implementation_context),setter_ident)) - return; - - /* Find declaration of the property in the interface. There must be one. */ - decl = lookup_method (CLASS_NST_METHODS (class_method), setter_ident); - /* If one not declared in the inerface, this condition has already been reported - as user error (because property was not declared in the interface. */ - if (!decl) - return; - - objc_inherit_code = INSTANCE_METHOD_DECL; - objc_start_method_definition (copy_node (decl), NULL_TREE); - body = c_begin_compound_stmt (true); - /* _property_name = _value; */ - /* If user specified an ivar, us it in generation of the setter. */ - ivar_ident = (PROPERTY_IVAR_NAME (property) != boolean_true_node) - ? PROPERTY_IVAR_NAME (property) - : get_identifier (objc_build_property_ivar_name (property)); - stmt = objc_build_setter_stmt (ivar_ident); - if (stmt) - add_stmt (stmt); - add_stmt (c_end_compound_stmt (body, true)); - fn = current_function_decl; -#ifdef OBJCPLUS - finish_function (); -#endif - objc_finish_method_definition (fn); -} - -/* This routine synthesizes a 'getter' routine for new property. */ -static void -objc_synthesize_new_getter (tree class, tree class_method, tree property) -{ - /* APPLE LOCAL radar 5839812 - location for synthesized methods */ - location_t save_input_location; - tree decl,body,ret_val,fn; - /* APPLE LOCAL begin radar 5207415 */ - tree property_getter = PROPERTY_GETTER_NAME (property) - ? PROPERTY_GETTER_NAME (property) - : PROPERTY_NAME (property); - /* APPLE LOCAL end radar 5207415 */ - /* If user has implemented a getter with same name then do nothing. */ - if (lookup_method (CLASS_NST_METHODS ( - /* APPLE LOCAL radar 5207415 */ - objc_implementation_context),property_getter)) - return; - - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - save_input_location = input_location; - input_location = DECL_SOURCE_LOCATION (property); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - - /* APPLE LOCAL begin radar 5435299 */ - if (!flag_new_property_ivar_synthesis) - objc_lookup_property_ivar (class, property); - /* APPLE LOCAL end radar 5435299 */ - - /* Find declaration of the property in the interface. There must be one. */ - /* APPLE LOCAL radar 5040740 - radar 5207415 */ - decl = lookup_nested_method (class_method, property_getter); - /* If one not declared in the inerface, this condition has already been reported - as user error (because property was not declared in the interface. */ - if (!decl) - return; - - /* APPLE LOCAL begin radar 4947014 - objc atomic property */ - if (!umsg_GetAtomicProperty || !umsg_CopyAtomicStruct) - declare_atomic_property_api (); - objc_inherit_code = INSTANCE_METHOD_DECL; - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - decl = copy_node (decl); - DECL_SOURCE_LOCATION (decl) = DECL_SOURCE_LOCATION (property); - objc_start_method_definition (decl, NULL_TREE); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - body = c_begin_compound_stmt (true); - if (!flag_objc_gc_only && IS_ATOMIC (property) - && (PROPERTY_COPY (property) == boolean_true_node - || PROPERTY_RETAIN (property) == boolean_true_node)) - { - /* build call to: - id objc_getProperty (self, _cmd, offsetof (class, ivar), isAtomic) */ - tree cmd; - /* APPLE LOCAL begin radar 5610134 */ - tree func_params, func; - tree field_decl = nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property)); - tree offset = flag_objc_abi <= 1 ? byte_position (field_decl) - : ivar_offset_ref (CLASS_NAME (class), field_decl); - /* APPLE LOCAL end radar 5610134 */ - gcc_assert (self_decl); - cmd = TREE_CHAIN (self_decl); - gcc_assert (cmd); - func_params = tree_cons (NULL_TREE, self_decl, - tree_cons (NULL_TREE, cmd, - tree_cons (NULL_TREE, offset, - tree_cons (NULL_TREE, boolean_true_node, NULL_TREE)))); - func = umsg_GetAtomicProperty; - ret_val = build_function_call (func, func_params); - } - else - { - bool isStrong = false; - tree ret_type = TREE_TYPE (TREE_TYPE (current_function_decl)); - /* return self->ivar_name; */ - /* APPLE LOCAL begin radar 5376125 */ - int save_warn_direct_ivar_access = warn_direct_ivar_access; - warn_direct_ivar_access = 0; - ret_val = build_ivar_reference (PROPERTY_IVAR_NAME (property)); - warn_direct_ivar_access = save_warn_direct_ivar_access; - /* APPLE LOCAL end radar 5376125 */ - - /* Handle struct-valued functions */ - /* APPLE LOCAL begin 6671703 ARM 64-bit atomic properties */ - if ( -#ifdef TARGET_ARM - (IS_ATOMIC (property) - && TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ret_type)) > 4) || -#endif - ((TREE_CODE (ret_type) == RECORD_TYPE - || TREE_CODE (ret_type) == UNION_TYPE) - /* APPLE LOCAL radar 5080710 */ - && (TREE_ADDRESSABLE (ret_type) || targetm.calls.return_in_memory (ret_type, 0)) - && (IS_ATOMIC (property) || - (isStrong = ((flag_objc_gc || flag_objc_gc_only) - && aggregate_contains_objc_pointer (ret_type)))))) - /* APPLE LOCAL end 6671703 ARM 64-bit atomic properties */ - { - /* struct something tmp; - objc_copyStruct (&tmp, &structIvar, sizeof (struct something), isAtomic, false); - return tmp; - */ - tree decl = create_tmp_var_raw (ret_type, NULL); - tree isAtomic = (IS_ATOMIC (property) ? boolean_true_node : boolean_false_node); - tree hasStrong = (isStrong ? boolean_true_node : boolean_false_node); - tree size_ret_val = build_int_cst_wide (NULL_TREE, - TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ret_type)), - TREE_INT_CST_HIGH (TYPE_SIZE_UNIT (ret_type))); - tree func_params, stmt, tmp; - lang_hooks.decls.pushdecl (decl); - tmp = build_fold_addr_expr (decl); - ret_val = build_fold_addr_expr (ret_val); - func_params = tree_cons (NULL_TREE, tmp, - tree_cons (NULL_TREE, ret_val, - tree_cons (NULL_TREE, size_ret_val, - tree_cons (NULL_TREE, isAtomic, - tree_cons (NULL_TREE, hasStrong, NULL_TREE))))); - stmt = build_function_call (umsg_CopyAtomicStruct, func_params); - add_stmt (stmt); - ret_val = decl; - } - } - /* APPLE LOCAL end radar 4947014 - objc atomic property */ - - if (ret_val) - { - /* APPLE LOCAL radar 5276085 */ - ret_val = objc_build_weak_reference_tree (ret_val); -#ifdef OBJCPLUS - finish_return_stmt (ret_val); -#else - (void)c_finish_return (ret_val); -#endif - } - add_stmt (c_end_compound_stmt (body, true)); - fn = current_function_decl; -#ifdef OBJCPLUS - finish_function (); -#endif - objc_finish_method_definition (fn); - /* APPLE LOCAL radar 5839812 - location for synthesized methods */ - input_location = save_input_location; -} - -/* This routine synthesizes a 'setter' routine for new property. */ -static void -objc_synthesize_new_setter (tree class, tree class_method, tree property) -{ - tree fn, decl, stmt; - tree body, lhs; - /* APPLE LOCAL begin radar 5207415 */ - tree setter_ident; - /* APPLE LOCAL radar 5839812 - location for synthesized methods */ - location_t save_input_location; - - if (PROPERTY_SETTER_NAME (property)) - setter_ident = PROPERTY_SETTER_NAME (property); - else - setter_ident = get_identifier (objc_build_property_setter_name (PROPERTY_NAME (property), true)); - /* APPLE LOCAL end radar 5207415 */ - - /* If user has implemented a setter with same name then do nothing. */ - if (lookup_method (CLASS_NST_METHODS ( - objc_implementation_context),setter_ident)) - return; - - /* APPLE LOCAL begin radar 5435299 */ - if (!flag_new_property_ivar_synthesis) - objc_lookup_property_ivar (class, property); - /* APPLE LOCAL end radar 5435299 */ - - /* Find declaration of the property in the interface. There must be one. */ - /* APPLE LOCAL radar 5040740 */ - decl = lookup_nested_method (class_method, setter_ident); - /* If not declared in the inerface, this condition has already been reported - as user error (because property was not declared in the interface. */ - if (!decl) - return; - - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - save_input_location = input_location; - input_location = DECL_SOURCE_LOCATION (property); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - - /* APPLE LOCAL begin radar 4947014 - objc atomic property */ - if (!umsg_SetAtomicProperty || !umsg_CopyAtomicStruct) - declare_atomic_property_api (); - objc_inherit_code = INSTANCE_METHOD_DECL; - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - decl = copy_node (decl); - DECL_SOURCE_LOCATION (decl) = DECL_SOURCE_LOCATION (property); - objc_start_method_definition (decl, NULL_TREE); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - body = c_begin_compound_stmt (true); - /* property_name = _value; */ - stmt = NULL_TREE; - if (PROPERTY_COPY (property) == boolean_true_node - || (!flag_objc_gc_only && PROPERTY_RETAIN (property) == boolean_true_node)) - { - /* build call to: - objc_setProperty (self, _cmd, offsetof (class, ivar), arg, [true|false], [true|false]) */ - tree cmd, arg; - /* APPLE LOCAL begin radar 5610134 */ - tree func_params, func; - tree field_decl = nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property)); - tree offset = flag_objc_abi <= 1 ? byte_position (field_decl) - : ivar_offset_ref (CLASS_NAME (class), field_decl); - /* APPLE LOCAL end radar 5610134 */ - tree shouldCopy = (PROPERTY_COPY (property) == boolean_true_node) - ? boolean_true_node : boolean_false_node; - tree isAtomic = IS_ATOMIC (property) ? boolean_true_node : boolean_false_node; - gcc_assert (self_decl); - cmd = TREE_CHAIN (self_decl); - gcc_assert (cmd); - arg = TREE_CHAIN (cmd); - gcc_assert (arg); - /* APPLE LOCAL radar 5398274 */ - TREE_USED (arg) = 1; - func_params = tree_cons (NULL_TREE, self_decl, - tree_cons (NULL_TREE, cmd, - tree_cons (NULL_TREE, offset, - tree_cons (NULL_TREE, arg, - tree_cons (NULL_TREE, isAtomic, - tree_cons (NULL_TREE, shouldCopy, NULL_TREE)))))); - func = umsg_SetAtomicProperty; - stmt = build_function_call (func, func_params); - } - else - { - tree ivar_type; - /* APPLE LOCAL begin radar 5852190 */ - tree rhs = NULL_TREE; - int save_warn_direct_ivar_access = warn_direct_ivar_access; - - if (current_function_decl && DECL_ARGUMENTS (current_function_decl)) - rhs = TREE_CHAIN (TREE_CHAIN (DECL_ARGUMENTS (current_function_decl))); - /* APPLE LOCAL begin radar 5376125 */ - warn_direct_ivar_access = 0; - lhs = build_ivar_reference (PROPERTY_IVAR_NAME (property)); - warn_direct_ivar_access = save_warn_direct_ivar_access; - /* APPLE LOCAL end radar 5376125 */ - /* Recover when method does not have '_value' argument. This is because user - provided its own accessor and for which an error is already issued. */ - if (!rhs) { - fatal_error ("Failed to synthesize the setter - possibly due to earlier error"); - rhs = lhs; - } - /* APPLE LOCAL end radar 5852190 */ - /* APPLE LOCAL begin radar 5232840 */ - else - TREE_USED (rhs) = 1; - /* APPLE LOCAL end radar 5232840 */ - ivar_type = TREE_TYPE (lhs); - /* APPLE LOCAL begin 6671703 ARM 64-bit atomic properties */ - if ( -#ifdef TARGET_ARM - (IS_ATOMIC (property) - && TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ivar_type)) > 4) || -#endif - ((TREE_CODE (ivar_type) == RECORD_TYPE || TREE_CODE (ivar_type) == UNION_TYPE) - /* APPLE LOCAL begin radar 5080710 */ - && IS_ATOMIC (property) - && (TREE_ADDRESSABLE (ivar_type) || targetm.calls.return_in_memory (ivar_type, 0)))) - /* APPLE LOCAL end radar 5080710 */ - /* APPLE LOCAL end 6671703 ARM 64-bit atomic properties */ - { - /* objc_copyStruct (&structIvar, &value, sizeof (struct something), true, false); */ - tree func_params; - tree isAtomic = boolean_true_node; - tree hasStrong = boolean_false_node; - tree addr_structIvar = build_fold_addr_expr (lhs); - tree size_struct = build_int_cst_wide (NULL_TREE, - TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ivar_type)), - TREE_INT_CST_HIGH (TYPE_SIZE_UNIT (ivar_type))); - rhs = build_fold_addr_expr (rhs); - func_params = tree_cons (NULL_TREE, addr_structIvar, - tree_cons (NULL_TREE, rhs, - tree_cons (NULL_TREE, size_struct, - tree_cons (NULL_TREE, isAtomic, - tree_cons (NULL_TREE, hasStrong, NULL_TREE))))); - stmt = build_function_call (umsg_CopyAtomicStruct, func_params); - } - else - { - /* Common case */ - /* APPLE LOCAL 5675908 */ - stmt = build_modify_expr (lhs, NOP_EXPR, rhs); - } - } - /* APPLE LOCAL end radar 4947014 - objc atomic property */ - - if (stmt) - add_stmt (stmt); - add_stmt (c_end_compound_stmt (body, true)); - fn = current_function_decl; -#ifdef OBJCPLUS - finish_function (); -#endif - objc_finish_method_definition (fn); - /* APPLE LOCAL radar 5839812 - location for synthesized methods */ - input_location = save_input_location; -} - -/* APPLE LOCAL begin radar 4966565 */ -/* This routine retrievs the base class implementation of the category implementation - or NULL_TREE if one not found. CATEGORY_IMPL is to be CATEGORY_IMPLEMENTATION_TYPE - and BASE_CLASS is CLASS_INTERFACE_TYPE of base class of this category. */ - -static tree -get_category_base_class_impl (tree category_impl, tree base_class) -{ - if (TREE_CODE (category_impl) == CATEGORY_IMPLEMENTATION_TYPE - && TREE_CODE (base_class) == CLASS_INTERFACE_TYPE) - { - struct imp_entry *impent; - for (impent = imp_list; impent; impent = impent->next) - { - if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE - && impent->imp_template == base_class) - return impent->imp_context; - } - } - return NULL_TREE; -} - -/* This routine returns true, if accessor is implemenated in base @implementation of the given - category @implementation; false otherwise. CATEGORY_IMPL is to be CATEGORY_IMPLEMENTATION_TYPE - and BASE_CLASS is CLASS_INTERFACE_TYPE of base class of this category. */ - -static bool -lookup_accessor_in_base_class_impl (tree category_impl, tree base_class, tree method_ident) -{ - tree base_impl = get_category_base_class_impl (category_impl, base_class); - return (base_impl != NULL_TREE) - && lookup_method (CLASS_NST_METHODS (base_impl), method_ident); -} -/* APPLE LOCAL end radar 4966565 */ - -/* Main routine to generate code/data for all the property information for - current implementation (class or category). CLASS is the interface where - ivars are declared in. CLASS_METHODS is where methods are found which - could be a class or a category depending on wheter we are implementing - property of a class or a category. */ - -static void -objc_gen_property_data (tree class, tree class_methods) -{ - tree x; - /* Merge any property declared in interface but not in - implementation to implementation. */ - objc_v2_merge_property (); - - /* Synthesize accessors for those properties specified an @synthesize */ - for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) - { - /* Skip dynamic property. */ - if (PROPERTY_DYNAMIC (x) == boolean_true_node) - continue; - else if (PROPERTY_IVAR_NAME (x)) - { - /* property 'ivar' is set only when @synthesize is specified. */ - objc_synthesize_new_getter (class, class_methods, x); - if (PROPERTY_READONLY (x) == boolean_false_node) - objc_synthesize_new_setter (class, class_methods, x); - } - else - { - if (PROPERTY_GETTER_NAME (x)) - objc_process_getter_setter (class_methods, x, true); - /* APPLE LOCAL begin radar 4966565 - radar 4653422 */ - else if (!lookup_method (CLASS_NST_METHODS (objc_implementation_context), PROPERTY_NAME (x)) - && !lookup_accessor_in_base_class_impl (objc_implementation_context, class, - PROPERTY_NAME (x)) - && !OPTIONAL_PROPERTY (x)) - /* APPLE LOCAL end radar 4966565 - radar 4653422 */ - warning (0, "property %qs requires method '-%s' to be defined - use @synthesize, " - "@dynamic or provide a method implementation", - IDENTIFIER_POINTER (PROPERTY_NAME (x)), IDENTIFIER_POINTER (PROPERTY_NAME (x))); - if (PROPERTY_READONLY (x) == boolean_false_node - && PROPERTY_SETTER_NAME (x)) - objc_process_getter_setter (class_methods, x, false); - else if (PROPERTY_READONLY (x) == boolean_false_node) - { - char *setter_string_name = objc_build_property_setter_name (PROPERTY_NAME (x), true); - /* APPLE LOCAL begin radar 4966565 - radar 4653422 */ - tree ident = get_identifier (setter_string_name); - if (!lookup_method (CLASS_NST_METHODS (objc_implementation_context), ident) - && !lookup_accessor_in_base_class_impl (objc_implementation_context, class, ident) - && !OPTIONAL_PROPERTY (x)) - warning (0, "property %qs requires the method '%s' to be defined - use @synthesize, " - "@dynamic or provide a method implementation", - IDENTIFIER_POINTER (PROPERTY_NAME (x)), setter_string_name); - /* APPLE LOCAL end radar 4966565 - radar 4653422 */ - } - } - } - return; - - for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) - objc_gen_one_property_data (class, x, class_methods); - - /* Synthesize all getters for properties. */ - for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) - { - /* Skip dynamic property. */ - if (PROPERTY_DYNAMIC (x) == boolean_true_node) - continue; - - /* Property has a getter attribute, no need to synthesize one. */ - if (PROPERTY_GETTER_NAME (x) == NULL_TREE) - objc_synthesize_getter (class, class_methods, x); - else - objc_process_getter_setter (class_methods, x, true); - - if (PROPERTY_READONLY (x) == boolean_false_node) - { - /* not a readonly property. */ - if (PROPERTY_SETTER_NAME (x) == NULL_TREE) - objc_synthesize_setter (class, class_methods, x); - else - objc_process_getter_setter (class_methods, x, false); - } - } -} - -/* This routine creates an ivar and adds it to current class's ivar list. */ - -static void -objc_add_internal_ivar (tree class, tree property, const char *ivar_name) -{ - tree record = CLASS_STATIC_TEMPLATE (class); - tree type = TREE_TYPE (property); - tree field_decl, field, nf; - /* APPLE LOCAL begin radar 6029624 */ -#ifdef OBJCPLUS - if (TREE_CODE (type) == REFERENCE_TYPE) - type = TYPE_MAIN_VARIANT (TREE_TYPE (type)); -#endif - /* APPLE LOCAL end radar 6029624 */ - field_decl = create_field_decl (type, - ivar_name ? ivar_name - : objc_build_property_ivar_name (property)); - DECL_CONTEXT (field_decl) = record; - /* APPLE LOCAL begin radar 5435299 */ - /* With -fnew-property-ivar_synthesis, synthesized 'ivar' is always private. */ - (void) add_instance_variable (class, - !flag_new_property_ivar_synthesis ? 1 : 2, field_decl); - /* APPLE LOCAL end radar 5435299 */ - if (objc_is_strong_p (type) == -1) - { - tree attribute = tree_cons (NULL_TREE, get_identifier ("weak"), NULL_TREE); - attribute = tree_cons (get_identifier ("objc_gc"), attribute, NULL_TREE); - decl_attributes (&field_decl, attribute, 0); - } - /* APPLE LOCAL begin radar 5435299 */ - nf = copy_node (field_decl); - if (flag_new_property_ivar_synthesis) - { - /* New field added to struct must not have ivar specific access info. - This confuses c++'s side of its own access field checking. */ - TREE_PUBLIC (nf) = IVAR_PUBLIC_OR_PROTECTED (nf) = 1; - TREE_PRIVATE (nf) = TREE_PROTECTED (nf) = 0; - } - /* APPLE LOCAL end radar 5435299 */ - /* Unfortunately, CLASS_IVARS is completed when interface is completed. - Must add the new ivar by hand to its list here. */ - -#ifdef OBJCPLUS - /* Must insert this field before the TYPE_DECL node in the chain of fields. */ - field = CLASS_IVARS (class); - while (field && TREE_CHAIN (field) - && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) - field = TREE_CHAIN (field); - if (field && TREE_CHAIN (field) - && TREE_CODE (TREE_CHAIN (field)) != FIELD_DECL) - { - TREE_CHAIN (nf) = TREE_CHAIN (field); - TREE_CHAIN (field) = nf; - } - else -#endif /* OBJCPLUS */ - CLASS_IVARS (class) = chainon (CLASS_IVARS (class), nf); - gcc_assert (record); - /* Must also add this ivar to the end of list of fields for this class. */ - field = TYPE_FIELDS (record); - if (field && field != CLASS_IVARS (class)) - /* class has a hidden field, attach ivar list after the hiddent field. */ - TREE_CHAIN (field) = CLASS_IVARS (class); - else - TYPE_FIELDS (record) = CLASS_IVARS (class); - /* Ugh, must recalculate struct layout since an ivar was added. */ - TYPE_SIZE (record) = 0; - layout_type (record); - /* APPLE LOCAL begin radar 5435299 */ - if (flag_new_property_ivar_synthesis) - objc_ivar_chain = CLASS_RAW_IVARS (class); - /* APPLE LOCAL end radar 5435299 */ -} - -/* This routine looks up PROPERTY's 'ivar' in the CLASS. If one not found, it inserts one - and may issue error for 32-bit abi (fragile 'ivar') in this case. */ -static void -objc_lookup_property_ivar (tree class, tree property) -{ - /* Check for an existing or synthesized 'ivar' and diagnose as needed. */ - tree ivar_name = PROPERTY_IVAR_NAME (property); - if (!nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property))) - { - if (flag_objc_abi <= 1) - error ("synthesized property %qs must either be named the same as a compatible ivar or must explicitly name an ivar", - IDENTIFIER_POINTER (PROPERTY_NAME (property))); - objc_add_internal_ivar (class, property, IDENTIFIER_POINTER (ivar_name)); - } -} -/* APPLE LOCAL end C* language */ - -/* APPLE LOCAL begin radar 4965989 */ -/* This routine merges all methods declared or synthesized in anonymous class - into PRIMARY primary class. CHAIN is the list of methods in anonymous category. - MTYPE is '+' for class methods and '-' for instance methods. -*/ -static void -objc_merge_methods (tree primary, tree chain ,int mtype) -{ - while (chain) - { - tree method = chain; - chain = TREE_CHAIN (chain); - objc_add_method (primary, method, mtype == '+', false); - if (mtype == '-' && METHOD_PROPERTY_CONTEXT (method)) - { - tree x; - for (x = CLASS_PROPERTY_DECL (primary); x; x = TREE_CHAIN (x)) - { - if (PROPERTY_NAME (x) == PROPERTY_NAME (METHOD_PROPERTY_CONTEXT (method))) - { - METHOD_PROPERTY_CONTEXT (method) = x; - break; - } - } - } - } -} -/* APPLE LOCAL end radar 4965989 */ - -/* APPLE LOCAL begin radar 4968128 */ -static tree -strip_end_colon (tree ident) -{ - size_t pos = IDENTIFIER_LENGTH (ident) - 1; - gcc_assert (IDENTIFIER_LENGTH (ident) > 0 && IDENTIFIER_POINTER (ident)[pos] == ':'); - return get_identifier_with_length (IDENTIFIER_POINTER (ident), pos); -} -/* APPLE LOCAL end radar 4968128 */ - -/* APPLE LOCAL begin radar 6017984 */ -/* This routine merges all methods declared in the protocol-list - into the current class. */ -static void -objc_merge_protocol_methods (tree class, tree rproto_list) -{ - tree rproto; - for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) - { - tree p = TREE_VALUE (rproto); - if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) - { - /* APPLE LOCAL begin radar 6370136 */ - /* Call objc_merge_methods on copied list of methods, as insertion - of methods in class's method list has side-effect of modifying - protocol's method list which must not change. */ - objc_merge_methods (class, copy_list (PROTOCOL_CLS_METHODS (p)), '+'); - objc_merge_methods (class, copy_list (PROTOCOL_NST_METHODS (p)), '-'); - /* APPLE LOCAL end radar 6370136 */ - /* Search in nested protocols also. */ - objc_merge_proto_properties_in_class (class, PROTOCOL_LIST (p)); - } - } -} -/* APPLE LOCAL end radar 6017984 */ - -/* This is called once we see the "@end" in an interface/implementation. */ - -static void -finish_class (tree class) -{ - if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE) - { - /* All code generation is done in finish_objc. */ - - /* APPLE LOCAL begin C* property (Radar 4436866) */ - /* Generate what needed for property; setters, getters, etc. */ - objc_gen_property_data (implementation_template, implementation_template); - /* APPLE LOCAL end C* property (Radar 4436866) */ - if (implementation_template != objc_implementation_context) - { - /* Ensure that all method listed in the interface contain bodies. */ - check_methods (CLASS_CLS_METHODS (implementation_template), - /* APPLE LOCAL radar 4568791, 4359757 */ - '+', NULL_TREE); - check_methods (CLASS_NST_METHODS (implementation_template), - /* APPLE LOCAL radar 4568791, 4359757 */ - '-', NULL_TREE); - - if (CLASS_PROTOCOL_LIST (implementation_template)) - check_protocols (CLASS_PROTOCOL_LIST (implementation_template), - "class", - /* APPLE LOCAL begin radar 4568791 */ - IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)), - implementation_template); - /* APPLE LOCAL end radar 4568791 */ - } - } - - else if (TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE) - { - tree category = lookup_category (implementation_template, CLASS_SUPER_NAME (class)); - - if (category) - { - /* APPLE LOCAL begin C* property (Radar 4436866) */ - /* Generate what needed for property; setters, getters, etc. */ - objc_gen_property_data (implementation_template, category); - /* APPLE LOCAL end C* property (Radar 4436866) */ - /* Ensure all method listed in the interface contain bodies. */ - /* APPLE LOCAL begin radar 4568791 */ - check_methods (CLASS_CLS_METHODS (category), - /* APPLE LOCAL radar 4359757 */ - '+', NULL_TREE); - check_methods (CLASS_NST_METHODS (category), - /* APPLE LOCAL radar 4359757 */ - '-', NULL_TREE); - - if (CLASS_PROTOCOL_LIST (category)) - check_protocols (CLASS_PROTOCOL_LIST (category), - "category", - IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)), - implementation_template); - } - } - /* APPLE LOCAL end radar 4568791 */ - /* APPLE LOCAL radar 4695109 */ - /* PROTOCOL_IMPLEMENTATION_TYPE removed */ - /* APPLE LOCAL begin objc new property */ - else - { - tree x; - /* APPLE LOCAL radar 5962694 */ - if (TREE_CODE (class) == CLASS_INTERFACE_TYPE || TREE_CODE (class) == CATEGORY_INTERFACE_TYPE) - { - objc_compare_properties_with_super (class); - objc_merge_proto_properties_in_class (class, CLASS_PROTOCOL_LIST (class)); - } - /* Process properties of the class. */ - for (x = CLASS_PROPERTY_DECL (class); x; x = TREE_CHAIN (x)) - { - tree getter_decl, setter_decl; - tree type = TREE_TYPE (x); - tree prop_name = PROPERTY_NAME (x); - if (PROPERTY_GETTER_NAME (x) == NULL_TREE) - { - /* No 'getter=name' attribute specified. Find the default getter and - if one not found, add one. */ - getter_decl = lookup_method (CLASS_NST_METHODS (class), prop_name); - if (getter_decl) - { - /* APPLE LOCAL begin radar 6083666 */ - tree getter_type = TREE_VALUE (TREE_TYPE (getter_decl)); - if ((comptypes (type, getter_type) != 1) - && !objc_compare_types (type, getter_type, -6, NULL_TREE, NULL)) - /* APPLE LOCAL radar 4815054 */ - warning (0, "type of accessor does not match the type of property %qs", - IDENTIFIER_POINTER (prop_name)); - /* APPLE LOCAL end radar 6083666 */ - if (METHOD_SEL_ARGS (getter_decl) != NULL_TREE) - error ("accessor %<%c%s%> cannot have any argument", - '-', IDENTIFIER_POINTER (prop_name)); - METHOD_PROPERTY_CONTEXT (getter_decl) = x; - TREE_DEPRECATED (getter_decl) = TREE_DEPRECATED (x); - } - /* APPLE LOCAL radar begin 4653422 */ - else if (!OPTIONAL_PROPERTY (x) || TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE) - { - tree rettype = build_tree_list (NULL_TREE, type); - getter_decl = build_method_decl (INSTANCE_METHOD_DECL, - rettype, prop_name, NULL_TREE, - false); - /* APPLE LOCAL begin radar 5839812 - synthesized methods */ - DECL_SOURCE_LOCATION (getter_decl) = - DECL_SOURCE_LOCATION (x); - /* APPLE LOCAL end radar 5839812 - synthesized methods */ - objc_add_method (class, getter_decl, false, OPTIONAL_PROPERTY (x)); - METHOD_PROPERTY_CONTEXT (getter_decl) = x; - TREE_DEPRECATED (getter_decl) = TREE_DEPRECATED (x); - } - /* APPLE LOCAL radar end 4653422 */ - } - else - { - /* getter = getter_name */ - getter_decl = lookup_method (CLASS_NST_METHODS (class), PROPERTY_GETTER_NAME (x)); - if (!getter_decl) - { - /* getter in 'getter' declaration has no declaration in this class. Provide - one here. */ - tree rettype = build_tree_list (NULL_TREE, type); - getter_decl = build_method_decl (INSTANCE_METHOD_DECL, - rettype, PROPERTY_GETTER_NAME (x), - NULL_TREE, false); - /* APPLE LOCAL begin radar 5839812 - synthesized methods */ - DECL_SOURCE_LOCATION (getter_decl) = - DECL_SOURCE_LOCATION (x); - /* APPLE LOCAL end radar 5839812 - synthesized methods */ - objc_add_method (class, getter_decl, false, false); - /* APPLE LOCAL radar 5390587 */ - METHOD_PROPERTY_CONTEXT (getter_decl) = x; - } - else - { - if (comptypes (type, TREE_VALUE (TREE_TYPE (getter_decl))) != 1) - /* APPLE LOCAL radar 4815054 */ - error ("type of existing accessor %<%c%s%> does not match the type of property %qs", - '-', IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (x)), IDENTIFIER_POINTER (prop_name)); - if (METHOD_SEL_ARGS (getter_decl) != NULL_TREE) - error ("existing accessor %<%c%s%> cannot have any argument", - '-', IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (x))); - } - /* APPLE LOCAL radar 4712415 */ - TREE_DEPRECATED (getter_decl) = TREE_DEPRECATED (x); - } - if (PROPERTY_SETTER_NAME (x) == NULL_TREE - && PROPERTY_READONLY (x) == boolean_false_node) - { - /* No setter is specified and it is not a 'readonly' property. Generate an instance - or find an existing one. */ - tree setter_name = get_identifier (objc_build_property_setter_name ( - prop_name, true)); - setter_decl = lookup_method (CLASS_NST_METHODS (class), setter_name); - if (setter_decl) - { - /* An eixsting setter must take a single argument of type matching the property's - type and must return 'void'. */ - if (TREE_VALUE (TREE_TYPE (setter_decl)) != void_type_node) - error ("setter %<%c%s%> type must be 'void'", - '-', IDENTIFIER_POINTER (prop_name)); - if (!METHOD_SEL_ARGS (setter_decl)) - error ("setter %<%c%s%> has no argument", '-', IDENTIFIER_POINTER (prop_name)); - else - { - tree akey = METHOD_SEL_ARGS (setter_decl); - tree arg_type = TREE_VALUE (TREE_TYPE (akey)); - if (comptypes (type, arg_type) != 1) - error ("setter %<%c%s%> argument type does not match property type", - '-', IDENTIFIER_POINTER (prop_name)); - akey = TREE_CHAIN (akey); - if (akey) - error ("setter %<%c%s%> has too many arguments", - '-', IDENTIFIER_POINTER (prop_name)); - } - /* APPLE LOCAL radar 4712415 */ - TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x); - } - /* APPLE LOCAL radar begin 4653422 */ - else if (!OPTIONAL_PROPERTY (x) - || TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE) - objc_add_property_setter_method (class, x); - /* APPLE LOCAL radar end 4653422 */ - } - else if (PROPERTY_SETTER_NAME (x)) - { - if (PROPERTY_READONLY (x) == boolean_true_node) - error ("setter cannot be specified for a 'readonly' property %qs" - , IDENTIFIER_POINTER (PROPERTY_NAME (x))); - else - { - /* User setter is specified in the attribute. See if it is of correct form. */ - setter_decl = lookup_method (CLASS_NST_METHODS (class), PROPERTY_SETTER_NAME (x)); - if (!setter_decl) - { - tree prop; - /* setter declared in 'setter' attribute has no declaration in current - class. Provide this declaration internally. */ - tree arg_type = build_tree_list (NULL_TREE, type); - tree arg_name = get_identifier ("_value"); - /* APPLE LOCAL radar 4968128 */ - tree selector = objc_build_keyword_decl (strip_end_colon (PROPERTY_SETTER_NAME (x)), - /* APPLE LOCAL radar 4157812 */ - arg_type, arg_name, NULL_TREE); - setter_decl = build_method_decl (INSTANCE_METHOD_DECL, - build_tree_list (NULL_TREE, void_type_node), selector, - build_tree_list (NULL_TREE, NULL_TREE), false); - /* APPLE LOCAL begin radar 5839812 - synthesized methods */ - DECL_SOURCE_LOCATION (setter_decl) = - DECL_SOURCE_LOCATION (x); - /* APPLE LOCAL end radar 5839812 - synthesized methods */ - objc_add_method (class, setter_decl, false, false); - METHOD_PROPERTY_CONTEXT (setter_decl) = x; - /* Issue error if setter name matches a property name. */ - for (prop = CLASS_PROPERTY_DECL (class); prop; prop = TREE_CHAIN (prop)) - { - /* APPLE LOCAL begin radar 5338634 */ - const char *property_name = IDENTIFIER_POINTER (PROPERTY_NAME (prop)); - const char *setter_name = IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)); - size_t len = strlen (setter_name) - 1; - if (strlen (property_name) == len && !strncmp (setter_name, property_name, len)) - { - error ("setter name %qs matches property %qs name", - setter_name, property_name); - break; - } - /* APPLE LOCAL end radar 5338634 */ - } - } - else - { - if (TREE_VALUE (TREE_TYPE (setter_decl)) != void_type_node) - error ("user setter's type must be 'void' for property %qs", - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - if (!METHOD_SEL_ARGS (setter_decl)) - error ("setter %<%c%s%> has no argument", - '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); - else - { - tree akey = METHOD_SEL_ARGS (setter_decl); - if (akey) - { - tree arg_type = TREE_VALUE (TREE_TYPE (akey)); - if (comptypes (type, arg_type) != 1) - /* APPLE LOCAL radar 4815054 */ - error ("argument type of setter %<%c%s%> does not match the type of property %qs", - '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)), - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - akey = TREE_CHAIN (akey); - if (akey) - error ("specified setter %<%c%s%> has too many arguments", - '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); - } - else - error ("specified setter %<%c%s%> has no argument", - '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); - } - } - /* APPLE LOCAL radar 4712415 */ - TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x); - } - } - if (PROPERTY_RETAIN (x) == boolean_true_node) - { - if (!objc_type_valid_for_messaging (type)) - error ("property %qs with 'retain' attribute must be of object type", - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - if (objc_is_gcable_type (type) == -1) - error ("property %qs with 'retain' attribute cannot be used with __weak storage specifier", - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - } - if (PROPERTY_COPY (x) == boolean_true_node) - { - if (!objc_type_valid_for_messaging (type)) - error ("property %qs with 'copy' attribute must be of object type", - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - if (objc_is_gcable_type (type) == -1) - error ("property %qs with 'copy' attribute cannot be used with __weak storage specifier", - IDENTIFIER_POINTER (PROPERTY_NAME (x))); - } - } - /* APPLE LOCAL begin radar 4965989 */ - /* New anonymous category */ - if (ANONYMOUS_CATEGORY (class)) - { - /* Merge all anonymous category's methods (including setter/getter) into its primary class. */ - tree primary = lookup_interface (CLASS_NAME (class)); - if (primary) - { - objc_merge_methods (primary, CLASS_NST_METHODS (class), '-'); - objc_merge_methods (primary, CLASS_CLS_METHODS (class), '+'); - /* APPLE LOCAL begin radar 6017984 */ - /* Just as we are adding anonymous category's methods to the - primary class, must also add methods in anonymous category's protocols - to the class as well, */ - objc_merge_protocol_methods (primary, CLASS_PROTOCOL_LIST (class)); - /* APPLE LOCAL end radar 6017984 */ - } - } - /* APPLE LOCAL end radar 4965989 */ - } - /* APPLE LOCAL end objc new property */ -} - -static tree -add_protocol (tree protocol) -{ - /* Put protocol on list in reverse order. */ - TREE_CHAIN (protocol) = protocol_chain; - protocol_chain = protocol; - return protocol_chain; -} - -static tree -lookup_protocol (tree ident) -{ - tree chain; - - for (chain = protocol_chain; chain; chain = TREE_CHAIN (chain)) - if (ident == PROTOCOL_NAME (chain)) - return chain; - - return NULL_TREE; -} - -/* This function forward declares the protocols named by NAMES. If - they are already declared or defined, the function has no effect. */ - -void -/* APPLE LOCAL radar 4947311 - protocol attributes */ -objc_declare_protocols (tree names, tree prefix_attrs) -{ - tree list; - -#ifdef OBJCPLUS - if (current_namespace != global_namespace) { - error ("Objective-C declarations may only appear in global scope"); - } -#endif /* OBJCPLUS */ - - for (list = names; list; list = TREE_CHAIN (list)) - { - tree name = TREE_VALUE (list); - - if (lookup_protocol (name) == NULL_TREE) - { - tree protocol = make_node (PROTOCOL_INTERFACE_TYPE); - - TYPE_LANG_SLOT_1 (protocol) - = make_tree_vec (PROTOCOL_LANG_SLOT_ELTS); - PROTOCOL_NAME (protocol) = name; - PROTOCOL_LIST (protocol) = NULL_TREE; - add_protocol (protocol); - PROTOCOL_DEFINED (protocol) = 0; - PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE; - /* APPLE LOCAL ObjC abi v2 */ - PROTOCOL_V2_FORWARD_DECL (protocol) = NULL_TREE; - /* APPLE LOCAL radar 4947311 - protocol attributes */ - PROTOCOL_ATTRIBUTES (protocol) = prefix_attrs; - } - } -} - -static tree -/* APPLE LOCAL radar 4947311 - protocol attributes */ -start_protocol (tree name, tree list, tree prefix_attrs) -{ - tree protocol; - -#ifdef OBJCPLUS - if (current_namespace != global_namespace) { - error ("Objective-C declarations may only appear in global scope"); - } -#endif /* OBJCPLUS */ - - protocol = lookup_protocol (name); - - if (!protocol) - { - /* APPLE LOCAL radar 4947311 - protocol attributes */ - protocol = make_node (PROTOCOL_INTERFACE_TYPE); - TYPE_LANG_SLOT_1 (protocol) = make_tree_vec (PROTOCOL_LANG_SLOT_ELTS); - - PROTOCOL_NAME (protocol) = name; - /* APPLE LOCAL radar 4398221 */ - PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list, false); - add_protocol (protocol); - PROTOCOL_DEFINED (protocol) = 1; - PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE; - /* APPLE LOCAL ObjC abi v2 */ - PROTOCOL_V2_FORWARD_DECL (protocol) = NULL_TREE; - /* APPLE LOCAL radar 4947311 - protocol attributes */ - PROTOCOL_ATTRIBUTES (protocol) = prefix_attrs; - check_protocol_recursively (protocol, list); - } - else if (! PROTOCOL_DEFINED (protocol)) - { - PROTOCOL_DEFINED (protocol) = 1; - /* APPLE LOCAL begin radar 4947311 - protocol attributes */ - PROTOCOL_ATTRIBUTES (protocol) = merge_attributes - (PROTOCOL_ATTRIBUTES (protocol), - prefix_attrs); - /* APPLE LOCAL end radar 4947311 - protocol attributes */ - /* APPLE LOCAL radar 4398221 */ - PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list, false); - - check_protocol_recursively (protocol, list); - } - else - { - warning (0, "duplicate declaration for protocol %qs", - IDENTIFIER_POINTER (name)); - } - return protocol; -} - - -/* "Encode" a data type into a string, which grows in util_obstack. - ??? What is the FORMAT? Someone please document this! */ - -static void -encode_type_qualifiers (tree declspecs) -{ - tree spec; - - for (spec = declspecs; spec; spec = TREE_CHAIN (spec)) - { - if (ridpointers[(int) RID_IN] == TREE_VALUE (spec)) - obstack_1grow (&util_obstack, 'n'); - else if (ridpointers[(int) RID_INOUT] == TREE_VALUE (spec)) - obstack_1grow (&util_obstack, 'N'); - else if (ridpointers[(int) RID_OUT] == TREE_VALUE (spec)) - obstack_1grow (&util_obstack, 'o'); - else if (ridpointers[(int) RID_BYCOPY] == TREE_VALUE (spec)) - obstack_1grow (&util_obstack, 'O'); - else if (ridpointers[(int) RID_BYREF] == TREE_VALUE (spec)) - obstack_1grow (&util_obstack, 'R'); - else if (ridpointers[(int) RID_ONEWAY] == TREE_VALUE (spec)) - obstack_1grow (&util_obstack, 'V'); - } -} - -/* APPLE LOCAL begin 4136935 */ -/* Determine if a pointee is marked read-only. */ - -static bool -pointee_is_readonly (tree pointee) -{ - while (POINTER_TYPE_P (pointee)) - pointee = TREE_TYPE (pointee); - - return TYPE_READONLY (pointee); -} - -/* APPLE LOCAL end 4136935 */ -/* APPLE LOCAL begin radar 4577849 */ -static void encode_protocol_list (tree record, bool quote) -{ - tree p; - bool firsttime = true; - bool close_quote = false; - for (p = TYPE_OBJC_PROTOCOL_LIST (record); p; p = TREE_CHAIN (p)) - { - tree proto = TREE_VALUE (p); - if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE - && PROTOCOL_NAME (proto)) - { - const char *name = IDENTIFIER_POINTER (PROTOCOL_NAME (proto)); - if (quote && firsttime) - { - obstack_1grow (&util_obstack, '"'); - firsttime = false; - close_quote = true; - } - obstack_1grow (&util_obstack, '<'); - obstack_grow (&util_obstack, name, strlen (name)); - obstack_1grow (&util_obstack, '>'); - } - } - if (quote && close_quote) - obstack_1grow (&util_obstack, '"'); -} -/* APPLE LOCAL end radar 4577849 */ - -/* Encode a pointer type. */ - -static void -encode_pointer (tree type, int curtype, int format) -{ - tree pointer_to = TREE_TYPE (type); - - /* APPLE LOCAL begin 4136935 */ - /* For historical/compatibility reasons, the read-only qualifier of the - pointee gets emitted _before_ the '^'. The read-only qualifier of - the pointer itself gets ignored, _unless_ we are looking at a typedef! - Also, do not emit the 'r' for anything but the outermost type! */ - if (!generating_instance_variables - && (obstack_object_size (&util_obstack) - curtype <= 1) - && (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL - ? TYPE_READONLY (type) - : pointee_is_readonly (pointer_to))) - obstack_1grow (&util_obstack, 'r'); - - /* APPLE LOCAL end 4136935 */ - if (TREE_CODE (pointer_to) == RECORD_TYPE) - { - /* APPLE LOCAL begin radar 5002848 */ - if (generating_property_type_encoding && - TYPE_NAME (pointer_to) - && TREE_CODE (TYPE_NAME (pointer_to)) == TYPE_DECL - && DECL_ORIGINAL_TYPE (TYPE_NAME (pointer_to))) - pointer_to = DECL_ORIGINAL_TYPE (TYPE_NAME (pointer_to)); - /* APPLE LOCAL end radar 5002848 */ - - if (OBJC_TYPE_NAME (pointer_to) - && TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE) - { - const char *name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (pointer_to)); - - if (strcmp (name, TAG_OBJECT) == 0) /* '@' */ - { - obstack_1grow (&util_obstack, '@'); - /* APPLE LOCAL begin radar 4577849 */ - if (generating_instance_variables - && TYPE_HAS_OBJC_INFO (pointer_to)) - encode_protocol_list (pointer_to, true); - /* APPLE LOCAL end radar 4577849 */ - return; - } - else if (TYPE_HAS_OBJC_INFO (pointer_to) - && TYPE_OBJC_INTERFACE (pointer_to)) - { - if (generating_instance_variables) - { - obstack_1grow (&util_obstack, '@'); - obstack_1grow (&util_obstack, '"'); - obstack_grow (&util_obstack, name, strlen (name)); - /* APPLE LOCAL radar 4577849 */ - encode_protocol_list (pointer_to, false); - obstack_1grow (&util_obstack, '"'); - return; - } - else - { - obstack_1grow (&util_obstack, '@'); - return; - } - } - else if (strcmp (name, TAG_CLASS) == 0) /* '#' */ - { - obstack_1grow (&util_obstack, '#'); - return; - } - else if (strcmp (name, TAG_SELECTOR) == 0) /* ':' */ - { - obstack_1grow (&util_obstack, ':'); - return; - } - } - } - else if (TREE_CODE (pointer_to) == INTEGER_TYPE - && TYPE_MODE (pointer_to) == QImode) - { - tree pname = TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE - ? OBJC_TYPE_NAME (pointer_to) - : DECL_NAME (OBJC_TYPE_NAME (pointer_to)); - - if (!flag_next_runtime || strcmp (IDENTIFIER_POINTER (pname), "BOOL")) - { - /* APPLE LOCAL 4136935 */ - /* The "r" is now generated above. */ - - obstack_1grow (&util_obstack, '*'); - return; - } - } - - /* We have a type that does not get special treatment. */ - - /* NeXT extension */ - /* APPLE LOCAL radar 5849129 */ - obstack_1grow (&util_obstack, TREE_CODE (type) == BLOCK_POINTER_TYPE ? '@' : '^'); - encode_type (pointer_to, curtype, format); -} - -static void -encode_array (tree type, int curtype, int format) -{ - tree an_int_cst = TYPE_SIZE (type); - tree array_of = TREE_TYPE (type); - char buffer[40]; - - /* An incomplete array is treated like a pointer. */ - if (an_int_cst == NULL) - { - encode_pointer (type, curtype, format); - return; - } - - if (TREE_INT_CST_LOW (TYPE_SIZE (array_of)) == 0) - sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)0); - else - sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC, - TREE_INT_CST_LOW (an_int_cst) - / TREE_INT_CST_LOW (TYPE_SIZE (array_of))); - - obstack_grow (&util_obstack, buffer, strlen (buffer)); - encode_type (array_of, curtype, format); - obstack_1grow (&util_obstack, ']'); - return; -} - -static void -encode_aggregate_fields (tree type, int pointed_to, int curtype, int format) -{ - tree field = TYPE_FIELDS (type); - - for (; field; field = TREE_CHAIN (field)) - { -#ifdef OBJCPLUS - /* C++ static members, and things that are not field at all, - should not appear in the encoding. */ - if (TREE_CODE (field) != FIELD_DECL || TREE_STATIC (field)) - continue; -#endif - - /* Recursively encode fields of embedded base classes. */ - if (DECL_ARTIFICIAL (field) && !DECL_NAME (field) - && TREE_CODE (TREE_TYPE (field)) == RECORD_TYPE) - { - encode_aggregate_fields (TREE_TYPE (field), - pointed_to, curtype, format); - continue; - } - - if (generating_instance_variables && !pointed_to) - { - tree fname = DECL_NAME (field); - - obstack_1grow (&util_obstack, '"'); - - if (fname && TREE_CODE (fname) == IDENTIFIER_NODE) - obstack_grow (&util_obstack, - IDENTIFIER_POINTER (fname), - strlen (IDENTIFIER_POINTER (fname))); - - obstack_1grow (&util_obstack, '"'); - } - - encode_field_decl (field, curtype, format); - } -} - -static void -encode_aggregate_within (tree type, int curtype, int format, int left, - int right) -{ - tree name; - /* NB: aggregates that are pointed to have slightly different encoding - rules in that you never encode the names of instance variables. */ - /* APPLE LOCAL begin 4136935 */ - int ob_size = obstack_object_size (&util_obstack); - int pointed_to = (ob_size > 0 - ? *(obstack_next_free (&util_obstack) - 1) == '^' - : 0); - int inline_contents - = ((format == OBJC_ENCODE_INLINE_DEFS || generating_instance_variables) - && (!pointed_to - || ob_size - curtype == 1 - || (ob_size - curtype == 2 - && *(obstack_next_free (&util_obstack) - 2) == 'r'))); - /* APPLE LOCAL end 4136935 */ - - /* Traverse struct aliases; it is important to get the - original struct and its tag name (if any). */ - type = TYPE_MAIN_VARIANT (type); - name = OBJC_TYPE_NAME (type); - /* Open parenth/bracket. */ - obstack_1grow (&util_obstack, left); - - /* Encode the struct/union tag name, or '?' if a tag was - not provided. Typedef aliases do not qualify. */ - if (name && TREE_CODE (name) == IDENTIFIER_NODE -#ifdef OBJCPLUS - /* Did this struct have a tag? */ - && !TYPE_WAS_ANONYMOUS (type) -#endif - ) - obstack_grow (&util_obstack, - IDENTIFIER_POINTER (name), - strlen (IDENTIFIER_POINTER (name))); - else - obstack_1grow (&util_obstack, '?'); - - /* Encode the types (and possibly names) of the inner fields, - if required. */ - if (inline_contents) - { - obstack_1grow (&util_obstack, '='); - encode_aggregate_fields (type, pointed_to, curtype, format); - } - /* Close parenth/bracket. */ - obstack_1grow (&util_obstack, right); -} - -static void -encode_aggregate (tree type, int curtype, int format) -{ - enum tree_code code = TREE_CODE (type); - - switch (code) - { - case RECORD_TYPE: - { - encode_aggregate_within (type, curtype, format, '{', '}'); - break; - } - case UNION_TYPE: - { - encode_aggregate_within (type, curtype, format, '(', ')'); - break; - } - - case ENUMERAL_TYPE: - obstack_1grow (&util_obstack, 'i'); - break; - - default: - break; - } -} - -/* Encode a bitfield NeXT-style (i.e., without a bit offset or the underlying - field type. */ - -static void -encode_next_bitfield (int width) -{ - char buffer[40]; - sprintf (buffer, "b%d", width); - obstack_grow (&util_obstack, buffer, strlen (buffer)); -} - -/* FORMAT will be OBJC_ENCODE_INLINE_DEFS or OBJC_ENCODE_DONT_INLINE_DEFS. */ -static void -encode_type (tree type, int curtype, int format) -{ - enum tree_code code = TREE_CODE (type); - char c; - /* APPLE LOCAL begin 4136935 */ - tree int_type; - - /* Ignore type qualifiers when encoding a type; see encode_pointer() - for an exception to this rule. */ - /* APPLE LOCAL end 4136935 */ - if (code == INTEGER_TYPE) - { - switch (GET_MODE_BITSIZE (TYPE_MODE (type))) - { - case 8: c = TYPE_UNSIGNED (type) ? 'C' : 'c'; break; - case 16: c = TYPE_UNSIGNED (type) ? 'S' : 's'; break; - /* APPLE LOCAL begin 4136935 */ - case 32: - /* Another legacy kludge: 32-bit longs are encoded as 'l' or 'L', - but not always. For typedefs, we need to use 'i' or 'I' instead - if encoding a struct field, or a pointer! */ - int_type = ((!generating_instance_variables - && (obstack_object_size (&util_obstack) - == (unsigned) curtype)) - ? TYPE_MAIN_VARIANT (type) - : type); - - if (int_type == long_unsigned_type_node - || int_type == long_integer_type_node) - /* APPLE LOCAL end 4136935 */ - c = TYPE_UNSIGNED (type) ? 'L' : 'l'; - else - c = TYPE_UNSIGNED (type) ? 'I' : 'i'; - break; - case 64: c = TYPE_UNSIGNED (type) ? 'Q' : 'q'; break; - /* APPLE LOCAL radar 5996271 */ - case 128: c = TYPE_UNSIGNED (type) ? 'T' : 't'; break; - default: abort (); - } - obstack_1grow (&util_obstack, c); - } - - else if (code == REAL_TYPE) - { - /* Floating point types. */ - switch (GET_MODE_BITSIZE (TYPE_MODE (type))) - { - case 32: c = 'f'; break; - /* APPLE LOCAL begin radar 4900615 */ - case 64: c = 'd'; break; - case 96: - case 128: c = 'D'; break; - /* APPLE LOCAL end radar 4900615 */ - default: abort (); - } - obstack_1grow (&util_obstack, c); - } - - else if (code == VOID_TYPE) - obstack_1grow (&util_obstack, 'v'); - - else if (code == BOOLEAN_TYPE) - obstack_1grow (&util_obstack, 'B'); - - else if (code == ARRAY_TYPE) - encode_array (type, curtype, format); - -/* APPLE LOCAL begin radar 4476365 */ -#ifdef OBJCPLUS - else if (code == REFERENCE_TYPE) - encode_pointer (type, curtype, format); -#endif -/* APPLE LOCAL end radar 4476365 */ - - /* APPLE LOCAL radar 5849129 */ - else if (code == POINTER_TYPE || code == BLOCK_POINTER_TYPE) - encode_pointer (type, curtype, format); - - else if (code == RECORD_TYPE || code == UNION_TYPE || code == ENUMERAL_TYPE) - encode_aggregate (type, curtype, format); - - else if (code == FUNCTION_TYPE) /* '?' */ - obstack_1grow (&util_obstack, '?'); - - /* APPLE LOCAL begin 4136935 */ - /* Super-kludge. Some ObjC qualifier and type combinations need to be - rearranged for compatibility with gcc-3.3. */ - if (code == POINTER_TYPE && obstack_object_size (&util_obstack) >= 3) - { - char *enc = obstack_base (&util_obstack) + curtype; - - /* Rewrite "in const" from "nr" to "rn". */ - if (curtype >= 1 && !strncmp (enc - 1, "nr", 2)) - strncpy (enc - 1, "rn", 2); - /* APPLE LOCAL begin radar 4301047 */ - /* code removed */ - /* APPLE LOCAL end radar 4301047 */ - } - /* APPLE LOCAL end 4136935 */ - - else if (code == COMPLEX_TYPE) - { - obstack_1grow (&util_obstack, 'j'); - encode_type (TREE_TYPE (type), curtype, format); - } -} - -static void -encode_gnu_bitfield (int position, tree type, int size) -{ - enum tree_code code = TREE_CODE (type); - char buffer[40]; - char charType = '?'; - - if (code == INTEGER_TYPE) - { - if (integer_zerop (TYPE_MIN_VALUE (type))) - { - /* Unsigned integer types. */ - - if (TYPE_MODE (type) == QImode) - charType = 'C'; - else if (TYPE_MODE (type) == HImode) - charType = 'S'; - else if (TYPE_MODE (type) == SImode) - { - if (type == long_unsigned_type_node) - charType = 'L'; - else - charType = 'I'; - } - else if (TYPE_MODE (type) == DImode) - charType = 'Q'; - } - - else - /* Signed integer types. */ - { - if (TYPE_MODE (type) == QImode) - charType = 'c'; - else if (TYPE_MODE (type) == HImode) - charType = 's'; - else if (TYPE_MODE (type) == SImode) - { - if (type == long_integer_type_node) - charType = 'l'; - else - charType = 'i'; - } - - else if (TYPE_MODE (type) == DImode) - charType = 'q'; - } - } - else if (code == ENUMERAL_TYPE) - charType = 'i'; - else - abort (); - - sprintf (buffer, "b%d%c%d", position, charType, size); - obstack_grow (&util_obstack, buffer, strlen (buffer)); -} - -static void -encode_field_decl (tree field_decl, int curtype, int format) -{ - tree type; - -#ifdef OBJCPLUS - /* C++ static members, and things that are not fields at all, - should not appear in the encoding. */ - if (TREE_CODE (field_decl) != FIELD_DECL || TREE_STATIC (field_decl)) - return; -#endif - - type = TREE_TYPE (field_decl); - - /* Generate the bitfield typing information, if needed. Note the difference - between GNU and NeXT runtimes. */ - if (DECL_BIT_FIELD_TYPE (field_decl)) - { - int size = tree_low_cst (DECL_SIZE (field_decl), 1); - - if (flag_next_runtime) - encode_next_bitfield (size); - else - encode_gnu_bitfield (int_bit_position (field_decl), - DECL_BIT_FIELD_TYPE (field_decl), size); - } - else - encode_type (TREE_TYPE (field_decl), curtype, format); -} - -/* APPLE LOCAL begin 4209854 */ -/* Decay array and function parameters into pointers. */ - -static tree -objc_decay_parm_type (tree type) -{ - if (TREE_CODE (type) == ARRAY_TYPE || TREE_CODE (type) == FUNCTION_TYPE) - type = build_pointer_type (TREE_CODE (type) == ARRAY_TYPE - ? TREE_TYPE (type) - : type); - - return type; -} - -/* APPLE LOCAL end 4209854 */ -static GTY(()) tree objc_parmlist = NULL_TREE; - -/* Append PARM to a list of formal parameters of a method, making a necessary - array-to-pointer adjustment along the way. */ - -static void -objc_push_parm (tree parm) -{ - /* APPLE LOCAL begin 4209854 */ - /* Decay arrays and functions into pointers. */ - tree type = objc_decay_parm_type (TREE_TYPE (parm)); - - /* If the parameter type has been decayed, a new PARM_DECL needs to be - built as well. */ - if (type != TREE_TYPE (parm)) - { - TREE_TYPE (parm) = type; - relayout_decl (parm); - } - /* APPLE LOCAL end 4209854 */ - - DECL_ARG_TYPE (parm) - = lang_hooks.types.type_promotes_to (TREE_TYPE (parm)); - - /* Record constancy and volatility. */ - c_apply_type_quals_to_decl - ((TYPE_READONLY (TREE_TYPE (parm)) ? TYPE_QUAL_CONST : 0) - | (TYPE_RESTRICT (TREE_TYPE (parm)) ? TYPE_QUAL_RESTRICT : 0) - | (TYPE_VOLATILE (TREE_TYPE (parm)) ? TYPE_QUAL_VOLATILE : 0), parm); - - objc_parmlist = chainon (objc_parmlist, parm); -} - -/* Retrieve the formal parameter list constructed via preceding calls to - objc_push_parm(). */ - -#ifdef OBJCPLUS -static tree -objc_get_parm_info (int have_ellipsis ATTRIBUTE_UNUSED) -#else -static struct c_arg_info * -objc_get_parm_info (int have_ellipsis) -#endif -{ -#ifdef OBJCPLUS - tree parm_info = objc_parmlist; - objc_parmlist = NULL_TREE; - - return parm_info; -#else - tree parm_info = objc_parmlist; - struct c_arg_info *arg_info; - /* The C front-end requires an elaborate song and dance at - this point. */ - push_scope (); - declare_parm_level (); - while (parm_info) - { - tree next = TREE_CHAIN (parm_info); - - TREE_CHAIN (parm_info) = NULL_TREE; - parm_info = pushdecl (parm_info); - finish_decl (parm_info, NULL_TREE, NULL_TREE); - parm_info = next; - } - arg_info = get_parm_info (have_ellipsis); - pop_scope (); - objc_parmlist = NULL_TREE; - return arg_info; -#endif -} - -/* Synthesize the formal parameters 'id self' and 'SEL _cmd' needed for ObjC - method definitions. In the case of instance methods, we can be more - specific as to the type of 'self'. */ - -static void -synth_self_and_ucmd_args (void) -{ - tree self_type; - - if (objc_method_context - && TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL) - self_type = objc_instance_type; - else - /* Really a `struct objc_class *'. However, we allow people to - assign to self, which changes its type midstream. */ - self_type = objc_object_type; - - /* id self; */ - objc_push_parm (build_decl (PARM_DECL, self_id, self_type)); - - /* SEL _cmd; */ - objc_push_parm (build_decl (PARM_DECL, ucmd_id, objc_selector_type)); -} - -/* Transform an Objective-C method definition into a static C function - definition, synthesizing the first two arguments, "self" and "_cmd", - in the process. */ - -static void -start_method_def (tree method) -{ - tree parmlist; -#ifdef OBJCPLUS - tree parm_info; -#else - struct c_arg_info *parm_info; -#endif - int have_ellipsis = 0; - - /* If we are defining a "dealloc" method in a non-root class, we - will need to check if a [super dealloc] is missing, and warn if - it is. */ - if(CLASS_SUPER_NAME (objc_implementation_context) - && !strcmp ("dealloc", IDENTIFIER_POINTER (METHOD_SEL_NAME (method)))) - should_call_super_dealloc = 1; - else - should_call_super_dealloc = 0; - /* APPLE LOCAL begin radar 4757423 */ - /* If we are defining a "finalize" method in a non-root class, we will need - to check if a [super finalize] is missing, and warn if it is. */ - should_call_super_finalize = - CLASS_SUPER_NAME (objc_implementation_context) - /* APPLE LOCAL radar 5424473 */ - && TREE_CODE (method) == INSTANCE_METHOD_DECL - && !strcmp ("finalize", IDENTIFIER_POINTER (METHOD_SEL_NAME (method))); - /* APPLE LOCAL end radar 4757423 */ - - /* Required to implement _msgSuper. */ - objc_method_context = method; - UOBJC_SUPER_decl = NULL_TREE; - - /* Generate prototype declarations for arguments..."new-style". */ - synth_self_and_ucmd_args (); - - /* Generate argument declarations if a keyword_decl. */ - parmlist = METHOD_SEL_ARGS (method); - while (parmlist) - { - tree type = TREE_VALUE (TREE_TYPE (parmlist)), parm; - - parm = build_decl (PARM_DECL, KEYWORD_ARG_NAME (parmlist), type); - /* APPLE LOCAL radar 4157812 */ - decl_attributes (&parm, KEYWORD_ARG_ATTRIBUTE (parmlist), 0); - objc_push_parm (parm); - parmlist = TREE_CHAIN (parmlist); - } - - if (METHOD_ADD_ARGS (method)) - { - tree akey; - - for (akey = TREE_CHAIN (METHOD_ADD_ARGS (method)); - akey; akey = TREE_CHAIN (akey)) - { - objc_push_parm (TREE_VALUE (akey)); - } - - if (METHOD_ADD_ARGS_ELLIPSIS_P (method)) - have_ellipsis = 1; - } - - parm_info = objc_get_parm_info (have_ellipsis); - - really_start_method (objc_method_context, parm_info); -} - -static void -warn_with_method (const char *message, int mtype, tree method) -{ - /* Add a readable method name to the warning. */ - warning (0, "%J%s %<%c%s%>", method, - message, mtype, gen_method_decl (method)); -} - -/* Return 1 if TYPE1 is equivalent to TYPE2 - for purposes of method overloading. */ - -static int -objc_types_are_equivalent (tree type1, tree type2) -{ - if (type1 == type2) - return 1; - - /* Strip away indirections. */ - /* APPLE LOCAL begin radar 5795493 - blocks */ - while ((TREE_CODE (type1) == ARRAY_TYPE || TREE_CODE (type1) == POINTER_TYPE || - TREE_CODE (type1) == BLOCK_POINTER_TYPE) - /* APPLE LOCAL end radar 5795493 - blocks */ - && (TREE_CODE (type1) == TREE_CODE (type2))) - type1 = TREE_TYPE (type1), type2 = TREE_TYPE (type2); - if (TYPE_MAIN_VARIANT (type1) != TYPE_MAIN_VARIANT (type2)) - return 0; - - type1 = (TYPE_HAS_OBJC_INFO (type1) - ? TYPE_OBJC_PROTOCOL_LIST (type1) - : NULL_TREE); - type2 = (TYPE_HAS_OBJC_INFO (type2) - ? TYPE_OBJC_PROTOCOL_LIST (type2) - : NULL_TREE); - - if (list_length (type1) == list_length (type2)) - { - for (; type2; type2 = TREE_CHAIN (type2)) - if (!lookup_protocol_in_reflist (type1, TREE_VALUE (type2))) - return 0; - return 1; - } - return 0; -} - -/* Return 1 if TYPE1 has the same size and alignment as TYPE2. */ - -static int -objc_types_share_size_and_alignment (tree type1, tree type2) -{ - return (simple_cst_equal (TYPE_SIZE (type1), TYPE_SIZE (type2)) - && TYPE_ALIGN (type1) == TYPE_ALIGN (type2)); -} - -/* Return 1 if PROTO1 is equivalent to PROTO2 - for purposes of method overloading. Ordinarily, the type signatures - should match up exactly, unless STRICT is zero, in which case we - shall allow differences in which the size and alignment of a type - // APPLE LOCAL radar 5370783 - is the same. When STRICT is 1, we allow for valid object type comparisons. */ - -static int -comp_proto_with_proto (tree proto1, tree proto2, int strict) -{ - /* APPLE LOCAL C* property (Radar 4436866) */ - /* code removed */ - /* The following test is needed in case there are hashing - collisions. */ - if (METHOD_SEL_NAME (proto1) != METHOD_SEL_NAME (proto2)) - return 0; - /* APPLE LOCAL begin C* property (Radar 4436866) */ - return match_proto_with_proto (proto1, proto2, strict); -} - -static int -match_proto_with_proto (tree proto1, tree proto2, int strict) -{ - tree type1, type2; - /* APPLE LOCAL end C* property (Radar 4436866) */ - /* Compare return types. */ - type1 = TREE_VALUE (TREE_TYPE (proto1)); - type2 = TREE_VALUE (TREE_TYPE (proto2)); - /* APPLE LOCAL begin radar 5370783 */ - if (!objc_types_are_equivalent (type1, type2)) { - if (strict == 2) - return 0; - if (!objc_types_share_size_and_alignment (type1, type2)) - return 0; - /* APPLE LOCAL radar 6231433 */ - if (strict == 1 && !objc_compare_types(type1, type2, -2, 0, NULL)) - return 0; - } - - /* Compare argument types. */ - /* APPLE LOCAL begin radar 6307941 */ - for (type1 = get_arg_type_list (METHOD_SEL_NAME (proto1), proto1, METHOD_REF, 0), - type2 = get_arg_type_list (METHOD_SEL_NAME (proto2), proto2, METHOD_REF, 0); - /* APPLE LOCAL end radar 6307941 */ - type1 && type2; - type1 = TREE_CHAIN (type1), type2 = TREE_CHAIN (type2)) - { - if (!objc_types_are_equivalent (TREE_VALUE (type1), TREE_VALUE (type2))) { - if (strict == 2) - return 0; - if (!objc_types_share_size_and_alignment (TREE_VALUE (type1), TREE_VALUE (type2))) - return 0; - /* Note, order of type2 and type1 in argument call is intentional. */ - /* APPLE LOCAL radar 6231433 */ - if (strict == 1 && !objc_compare_types(TREE_VALUE (type2), TREE_VALUE (type1), -2, 0, NULL)) - return 0; - } - } - /* APPLE LOCAL end radar 5370783 */ - - return (!type1 && !type2); -} - -/* Fold an OBJ_TYPE_REF expression for ObjC method dispatches, where - this occurs. ObjC method dispatches are _not_ like C++ virtual - member function dispatches, and we account for the difference here. */ -tree -#ifdef OBJCPLUS -objc_fold_obj_type_ref (tree ref, tree known_type) -#else -objc_fold_obj_type_ref (tree ref ATTRIBUTE_UNUSED, - tree known_type ATTRIBUTE_UNUSED) -#endif -{ -#ifdef OBJCPLUS - tree v = BINFO_VIRTUALS (TYPE_BINFO (known_type)); - - /* If the receiver does not have virtual member functions, there - is nothing we can (or need to) do here. */ - if (!v) - return NULL_TREE; - - /* Let C++ handle C++ virtual functions. */ - return cp_fold_obj_type_ref (ref, known_type); -#else - /* For plain ObjC, we currently do not need to do anything. */ - return NULL_TREE; -#endif -} - -static void -objc_start_function (tree name, tree type, tree attrs, -/* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ -#ifdef OBJCPLUS - tree params, -#else - struct c_arg_info *params, -#endif - tree method) -/* APPLE LOCAL end radar 5839812 - location for synthesized methods */ -{ - tree fndecl = build_decl (FUNCTION_DECL, name, type); - -#ifdef OBJCPLUS - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - /* fndecl's source location is, by default, the current input location - (build_decl automatically does that). If the fndecl is for a synthesized - property's getter or setter method, then the current input location will - be the '@end', rather than the '@property' or '@synthesize' statement. - The following statement detects that situation and re-sets fndecl to - the correct source location for the '@property' or '@synthesize' - statement. */ - if (method - && (strcmp (DECL_SOURCE_FILE (fndecl), DECL_SOURCE_FILE (method)) != 0 - || DECL_SOURCE_LINE (fndecl) != DECL_SOURCE_LINE (method))) - DECL_SOURCE_LOCATION (fndecl) = DECL_SOURCE_LOCATION (method); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - DECL_ARGUMENTS (fndecl) = params; - DECL_INITIAL (fndecl) = error_mark_node; - DECL_EXTERNAL (fndecl) = 0; - TREE_STATIC (fndecl) = 1; - retrofit_lang_decl (fndecl); - cplus_decl_attributes (&fndecl, attrs, 0); - /* APPLE LOCAL begin optimization pragmas 3124235/3420242 */ - /* Build a mapping between this decl and the per-function options in - effect at this point. */ - record_func_cl_pf_opts_mapping (fndecl); - /* APPLE LOCAL end optimization pragmas 3124235/3420242 */ - start_preparsed_function (fndecl, attrs, /*flags=*/SF_DEFAULT); -#else - struct c_label_context_se *nstack_se; - struct c_label_context_vm *nstack_vm; - /* APPLE LOCAL begin radar 5839812 - location for synthesized methods */ - /* fndecl's source location is, by default, the current input location - (build_decl automatically does that). If the fndecl is for a synthesized - property's getter or setter method, then the current input location will - be the '@end', rather than the '@property' or '@synthesize' statement. - The following statement detects that situation and re-sets fndecl to - the correct source location for the '@property' or '@synthesize' - statement. */ - if (method - && (strcmp (DECL_SOURCE_FILE (fndecl), DECL_SOURCE_FILE (method)) != 0 - || DECL_SOURCE_LINE (fndecl) != DECL_SOURCE_LINE (method))) - DECL_SOURCE_LOCATION (fndecl) = DECL_SOURCE_LOCATION (method); - /* APPLE LOCAL end radar 5839812 - location for synthesized methods */ - nstack_se = XOBNEW (&parser_obstack, struct c_label_context_se); - nstack_se->labels_def = NULL; - nstack_se->labels_used = NULL; - nstack_se->next = label_context_stack_se; - label_context_stack_se = nstack_se; - nstack_vm = XOBNEW (&parser_obstack, struct c_label_context_vm); - nstack_vm->labels_def = NULL; - nstack_vm->labels_used = NULL; - nstack_vm->scope = 0; - nstack_vm->next = label_context_stack_vm; - label_context_stack_vm = nstack_vm; - current_function_returns_value = 0; /* Assume, until we see it does. */ - current_function_returns_null = 0; - - decl_attributes (&fndecl, attrs, 0); - announce_function (fndecl); - DECL_INITIAL (fndecl) = error_mark_node; - DECL_EXTERNAL (fndecl) = 0; - TREE_STATIC (fndecl) = 1; - current_function_decl = pushdecl (fndecl); - /* APPLE LOCAL begin optimization pragmas 3124235/3420242 */ - /* Build a mapping between this decl and the per-function options in - effect at this point. */ - record_func_cl_pf_opts_mapping (fndecl); - /* APPLE LOCAL end optimization pragmas 3124235/3420242 */ - push_scope (); - declare_parm_level (); - DECL_RESULT (current_function_decl) - = build_decl (RESULT_DECL, NULL_TREE, - TREE_TYPE (TREE_TYPE (current_function_decl))); - DECL_ARTIFICIAL (DECL_RESULT (current_function_decl)) = 1; - DECL_IGNORED_P (DECL_RESULT (current_function_decl)) = 1; - start_fname_decls (); - store_parm_decls_from (params); -#endif - - TREE_USED (current_function_decl) = 1; -} - -/* - Generate an identifier for the function. the format is "_n_cls", - where 1 <= n <= nMethods, and cls is the name the implementation we - are processing. - - Install the return type from the method declaration. - - If we have a prototype, check for type consistency. */ - -static void -really_start_method (tree method, -#ifdef OBJCPLUS - tree parmlist -#else - struct c_arg_info *parmlist -#endif - ) -{ - tree ret_type, meth_type; - tree method_id; - const char *sel_name, *class_name, *cat_name; - char *buf; - - /* Synth the storage class & assemble the return type. */ - ret_type = TREE_VALUE (TREE_TYPE (method)); - - sel_name = IDENTIFIER_POINTER (METHOD_SEL_NAME (method)); - class_name = IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)); - cat_name = ((TREE_CODE (objc_implementation_context) - == CLASS_IMPLEMENTATION_TYPE) - ? NULL - : IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context))); - method_slot++; - - /* Make sure this is big enough for any plausible method label. */ - buf = (char *) alloca (50 + strlen (sel_name) + strlen (class_name) - + (cat_name ? strlen (cat_name) : 0)); - - OBJC_GEN_METHOD_LABEL (buf, TREE_CODE (method) == INSTANCE_METHOD_DECL, - class_name, cat_name, sel_name, method_slot); - - method_id = get_identifier (buf); - -#ifdef OBJCPLUS - /* Objective-C methods cannot be overloaded, so we don't need - the type encoding appended. It looks bad anyway... */ - push_lang_context (lang_name_c); -#endif - - meth_type - = build_function_type (ret_type, - /* APPLE LOCAL radar 6307941 */ - get_arg_type_list (METHOD_SEL_NAME (method), method, METHOD_DEF, 0)); - /* APPLE LOCAL radar 5839812 - location for synthesized methods */ - objc_start_function (method_id, meth_type, NULL_TREE, parmlist, method); - - /* Set self_decl from the first argument. */ - self_decl = DECL_ARGUMENTS (current_function_decl); - - /* Suppress unused warnings. */ - TREE_USED (self_decl) = 1; - TREE_USED (TREE_CHAIN (self_decl)) = 1; -#ifdef OBJCPLUS - pop_lang_context (); -#endif - - METHOD_DEFINITION (method) = current_function_decl; - /* APPLE LOCAL deprecated use in deprecated 6425499 */ - TREE_DEPRECATED (current_function_decl) = TREE_DEPRECATED (method); - - /* Check consistency...start_function, pushdecl, duplicate_decls. */ - - if (implementation_template != objc_implementation_context) - { - /* APPLE LOCAL begin radar 5370783 */ - tree proto - = lookup_method_static (implementation_template, - METHOD_SEL_NAME (method), - (TREE_CODE (method) == CLASS_METHOD_DECL), - false, false); - /* APPLE LOCAL end radar 5370783 */ - - if (proto) - { - /* APPLE LOCAL radar 4606233 */ - /* code removed */ - if (!comp_proto_with_proto (method, proto, 1)) - { - char type = (TREE_CODE (method) == INSTANCE_METHOD_DECL ? '-' : '+'); - - warn_with_method ("conflicting types for", type, method); - warn_with_method ("previous declaration of", type, proto); - } - /* APPLE LOCAL begin radar 4727659 */ - /* Move __attribute__ ((noreturn)) to DECL_FUNCTION definition node. - so warning may come out */ - if (METHOD_DEFINITION (method)) - TREE_THIS_VOLATILE (METHOD_DEFINITION (method)) - = TREE_THIS_VOLATILE (proto); - /* APPLE LOCAL end radar 4727659 */ - } - else - { - /* We have a method @implementation even though we did not - see a corresponding @interface declaration (which is allowed - by Objective-C rules). Go ahead and place the method in - the @interface anyway, so that message dispatch lookups - will see it. */ - tree interface = implementation_template; - - if (TREE_CODE (objc_implementation_context) - == CATEGORY_IMPLEMENTATION_TYPE) - interface = lookup_category - (interface, - CLASS_SUPER_NAME (objc_implementation_context)); - - if (interface) - objc_add_method (interface, copy_node (method), - /* APPLE LOCAL C* language */ - TREE_CODE (method) == CLASS_METHOD_DECL, 0); - } - } -} - -static void *UOBJC_SUPER_scope = 0; - -/* _n_Method (id self, SEL sel, ...) - { - struct objc_super _S; - _msgSuper ((_S.self = self, _S.class = _cls, &_S), ...); - } */ - -static tree -get_super_receiver (void) -{ - if (objc_method_context) - { - tree super_expr, super_expr_list; - - if (!UOBJC_SUPER_decl) - { - UOBJC_SUPER_decl = build_decl (VAR_DECL, get_identifier (TAG_SUPER), - objc_super_template); - /* This prevents `unused variable' warnings when compiling with -Wall. */ - TREE_USED (UOBJC_SUPER_decl) = 1; - lang_hooks.decls.pushdecl (UOBJC_SUPER_decl); - finish_decl (UOBJC_SUPER_decl, NULL_TREE, NULL_TREE); - UOBJC_SUPER_scope = objc_get_current_scope (); - } - - /* Set receiver to self. */ - super_expr = objc_build_component_ref (UOBJC_SUPER_decl, self_id); - /* APPLE LOCAL begin radar 6230701 */ - if (cur_block) - { - tree local_self_decl = self_decl; - access_block_ref_self_decl (&local_self_decl); - super_expr = build_modify_expr (super_expr, NOP_EXPR, local_self_decl); - } - else - super_expr = build_modify_expr (super_expr, NOP_EXPR, self_decl); - /* APPLE LOCAL end radar 6230701 */ - super_expr_list = super_expr; - - /* Set class to begin searching. */ - super_expr = objc_build_component_ref (UOBJC_SUPER_decl, - /* APPLE LOCAL ObjC abi v2 */ - get_identifier ("cls")); - - if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) - { - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2) - { - /* For new ObjC abi, "cls" is loaded from a __class_refs table entry. */ - /* For super call in class method, must have super_t.cls point to its - metaclass. */ - tree class_expr; - /* APPLE LOCAL begin radar 4535676 */ - class_expr = objc_v2_get_class_super_reference ( - CLASS_NAME (objc_implementation_context), - (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL)); - /* APPLE LOCAL end radar 4535676 */ - super_expr = build_modify_expr (super_expr, NOP_EXPR, class_expr); - } - else - { - /* [_cls, __cls]Super are "pre-built" in - synth_forward_declarations. */ - - super_expr = build_modify_expr (super_expr, NOP_EXPR, - ((TREE_CODE (objc_method_context) - == INSTANCE_METHOD_DECL) - ? ucls_super_ref - : uucls_super_ref)); - } - /* APPLE LOCAL end ObjC abi v2 */ - } - - else - /* We have a category. */ - { - tree super_name = CLASS_SUPER_NAME (implementation_template); - tree super_class; - - /* Barf if super used in a category of Object. */ - if (!super_name) - { - error ("no super class declared in interface for %qs", - IDENTIFIER_POINTER (CLASS_NAME (implementation_template))); - return error_mark_node; - } - - if (flag_next_runtime && !flag_zero_link) - { - /* APPLE LOCAL begin ObjC abi v2 */ - super_class = objc_get_class_reference ((flag_objc_abi == 2) - ? CLASS_NAME (implementation_template) - : super_name); - /* APPLE LOCAL end ObjC abi v2 */ - if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL) - /* If we are in a class method, we must retrieve the - _metaclass_ for the current class, pointed at by - the class's "isa" pointer. The following assumes that - "isa" is the first ivar in a class (which it must be). */ - super_class - = build_indirect_ref - (build_c_cast (build_pointer_type (objc_class_type), - super_class), "unary *"); - } - else - { - add_class_reference (super_name); - super_class = (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL - ? objc_get_class_decl : objc_get_meta_class_decl); - assemble_external (super_class); - super_class - = build_function_call - (super_class, - build_tree_list - (NULL_TREE, - my_build_string_pointer - (IDENTIFIER_LENGTH (super_name) + 1, - IDENTIFIER_POINTER (super_name)))); - } - - super_expr - = build_modify_expr (super_expr, NOP_EXPR, - build_c_cast (TREE_TYPE (super_expr), - super_class)); - } - - super_expr_list = build_compound_expr (super_expr_list, super_expr); - - super_expr = build_unary_op (ADDR_EXPR, UOBJC_SUPER_decl, 0); - super_expr_list = build_compound_expr (super_expr_list, super_expr); - - return super_expr_list; - } - else - { - error ("[super ...] must appear in a method context"); - return error_mark_node; - } -} - -/* When exiting a scope, sever links to a 'super' declaration (if any) - therein contained. */ - -void -objc_clear_super_receiver (void) -{ - if (objc_method_context - && UOBJC_SUPER_scope == objc_get_current_scope ()) { - UOBJC_SUPER_decl = 0; - UOBJC_SUPER_scope = 0; - } -} - -void -objc_finish_method_definition (tree fndecl) -{ - /* We cannot validly inline ObjC methods, at least not without a language - extension to declare that a method need not be dynamically - dispatched, so suppress all thoughts of doing so. */ - DECL_INLINE (fndecl) = 0; - DECL_UNINLINABLE (fndecl) = 1; - -#ifndef OBJCPLUS - /* The C++ front-end will have called finish_function() for us. */ - finish_function (); -#endif - - METHOD_ENCODING (objc_method_context) - = encode_method_prototype (objc_method_context); - - /* Required to implement _msgSuper. This must be done AFTER finish_function, - since the optimizer may find "may be used before set" errors. */ - objc_method_context = NULL_TREE; - - if (should_call_super_dealloc) - warning (0, "method possibly missing a [super dealloc] call"); - /* APPLE LOCAL begin radar 4757423 */ - if (should_call_super_finalize) - warning (0, "method possibly missing a [super finalize] call"); - /* APPLE LOCAL end radar 4757423 */ -} - -#if 0 -int -lang_report_error_function (tree decl) -{ - if (objc_method_context) - { - fprintf (stderr, "In method %qs\n", - IDENTIFIER_POINTER (METHOD_SEL_NAME (objc_method_context))); - return 1; - } - - else - return 0; -} -#endif - -/* Given a tree DECL node, produce a printable description of it in the given - buffer, overwriting the buffer. */ - -static char * -gen_declaration (tree decl) -{ - errbuf[0] = '\0'; - - if (DECL_P (decl)) - { - gen_type_name_0 (TREE_TYPE (decl)); - - if (DECL_NAME (decl)) - { - if (!POINTER_TYPE_P (TREE_TYPE (decl))) - strcat (errbuf, " "); - - strcat (errbuf, IDENTIFIER_POINTER (DECL_NAME (decl))); - } - - if (DECL_INITIAL (decl) - && TREE_CODE (DECL_INITIAL (decl)) == INTEGER_CST) - sprintf (errbuf + strlen (errbuf), ": " HOST_WIDE_INT_PRINT_DEC, - TREE_INT_CST_LOW (DECL_INITIAL (decl))); - } - - return errbuf; -} - -/* Given a tree TYPE node, produce a printable description of it in the given - buffer, overwriting the buffer. */ - -static char * -gen_type_name_0 (tree type) -{ - tree orig = type, proto; - - if (TYPE_P (type) && TYPE_NAME (type)) - type = TYPE_NAME (type); - else if (POINTER_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE) - { - tree inner = TREE_TYPE (type); - - while (TREE_CODE (inner) == ARRAY_TYPE) - inner = TREE_TYPE (inner); - - gen_type_name_0 (inner); - - if (!POINTER_TYPE_P (inner)) - strcat (errbuf, " "); - - if (POINTER_TYPE_P (type)) - strcat (errbuf, "*"); - else - while (type != inner) - { - strcat (errbuf, "["); - - if (TYPE_DOMAIN (type)) - { - char sz[20]; - - sprintf (sz, HOST_WIDE_INT_PRINT_DEC, - (TREE_INT_CST_LOW - (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1)); - strcat (errbuf, sz); - } - - strcat (errbuf, "]"); - type = TREE_TYPE (type); - } - - goto exit_function; - } - - if (TREE_CODE (type) == TYPE_DECL && DECL_NAME (type)) - type = DECL_NAME (type); - - strcat (errbuf, TREE_CODE (type) == IDENTIFIER_NODE - ? IDENTIFIER_POINTER (type) - : ""); - - /* For 'id' and 'Class', adopted protocols are stored in the pointee. */ - if (objc_is_id (orig)) - orig = TREE_TYPE (orig); - - proto = TYPE_HAS_OBJC_INFO (orig) ? TYPE_OBJC_PROTOCOL_LIST (orig) : NULL_TREE; - - if (proto) - { - strcat (errbuf, " <"); - - while (proto) { - strcat (errbuf, - IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (proto)))); - proto = TREE_CHAIN (proto); - strcat (errbuf, proto ? ", " : ">"); - } - } - - exit_function: - return errbuf; -} - -static char * -gen_type_name (tree type) -{ - errbuf[0] = '\0'; - - return gen_type_name_0 (type); -} - -/* Given a method tree, put a printable description into the given - buffer (overwriting) and return a pointer to the buffer. */ - -static char * -gen_method_decl (tree method) -{ - tree chain; - - strcpy (errbuf, "("); /* NB: Do _not_ call strcat() here. */ - gen_type_name_0 (TREE_VALUE (TREE_TYPE (method))); - strcat (errbuf, ")"); - chain = METHOD_SEL_ARGS (method); - - if (chain) - { - /* We have a chain of keyword_decls. */ - do - { - if (KEYWORD_KEY_NAME (chain)) - strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_KEY_NAME (chain))); - - strcat (errbuf, ":("); - gen_type_name_0 (TREE_VALUE (TREE_TYPE (chain))); - strcat (errbuf, ")"); - - strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_ARG_NAME (chain))); - if ((chain = TREE_CHAIN (chain))) - strcat (errbuf, " "); - } - while (chain); - - if (METHOD_ADD_ARGS (method)) - { - chain = TREE_CHAIN (METHOD_ADD_ARGS (method)); - - /* Know we have a chain of parm_decls. */ - while (chain) - { - strcat (errbuf, ", "); - gen_type_name_0 (TREE_TYPE (TREE_VALUE (chain))); - chain = TREE_CHAIN (chain); - } - - if (METHOD_ADD_ARGS_ELLIPSIS_P (method)) - strcat (errbuf, ", ..."); - } - } - - else - /* We have a unary selector. */ - strcat (errbuf, IDENTIFIER_POINTER (METHOD_SEL_NAME (method))); - - return errbuf; -} - -/* Debug info. */ - - -/* Dump an @interface declaration of the supplied class CHAIN to the - supplied file FP. Used to implement the -gen-decls option (which - prints out an @interface declaration of all classes compiled in - this run); potentially useful for debugging the compiler too. */ -static void -dump_interface (FILE *fp, tree chain) -{ - /* FIXME: A heap overflow here whenever a method (or ivar) - declaration is so long that it doesn't fit in the buffer. The - code and all the related functions should be rewritten to avoid - using fixed size buffers. */ - const char *my_name = IDENTIFIER_POINTER (CLASS_NAME (chain)); - tree ivar_decls = CLASS_RAW_IVARS (chain); - tree nst_methods = CLASS_NST_METHODS (chain); - tree cls_methods = CLASS_CLS_METHODS (chain); - - fprintf (fp, "\n@interface %s", my_name); - - /* CLASS_SUPER_NAME is used to store the superclass name for - classes, and the category name for categories. */ - if (CLASS_SUPER_NAME (chain)) - { - const char *name = IDENTIFIER_POINTER (CLASS_SUPER_NAME (chain)); - - if (TREE_CODE (chain) == CATEGORY_IMPLEMENTATION_TYPE - || TREE_CODE (chain) == CATEGORY_INTERFACE_TYPE) - { - fprintf (fp, " (%s)\n", name); - } - else - { - fprintf (fp, " : %s\n", name); - } - } - else - fprintf (fp, "\n"); - - /* FIXME - the following doesn't seem to work at the moment. */ - if (ivar_decls) - { - fprintf (fp, "{\n"); - do - { - fprintf (fp, "\t%s;\n", gen_declaration (ivar_decls)); - ivar_decls = TREE_CHAIN (ivar_decls); - } - while (ivar_decls); - fprintf (fp, "}\n"); - } - - while (nst_methods) - { - fprintf (fp, "- %s;\n", gen_method_decl (nst_methods)); - nst_methods = TREE_CHAIN (nst_methods); - } - - while (cls_methods) - { - fprintf (fp, "+ %s;\n", gen_method_decl (cls_methods)); - cls_methods = TREE_CHAIN (cls_methods); - } - - fprintf (fp, "@end\n"); -} - -/* Demangle function for Objective-C */ -static const char * -/* APPLE LOCAL radar 4638467,4734562 */ -objc_demangle (tree decl, int vrb) -{ - char *demangled, *cp; - /* APPLE LOCAL radar 4638467 */ - const char *mangled = IDENTIFIER_POINTER (DECL_NAME (decl)); - - if (mangled[0] == '_' && - (mangled[1] == 'i' || mangled[1] == 'c') && - mangled[2] == '_') - { - cp = demangled = XNEWVEC (char, strlen(mangled) + 2); - if (mangled[1] == 'i') - *cp++ = '-'; /* for instance method */ - else - *cp++ = '+'; /* for class method */ - *cp++ = '['; /* opening left brace */ - strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ - while (*cp && *cp == '_') - cp++; /* skip any initial underbars in class name */ - cp = strchr(cp, '_'); /* find first non-initial underbar */ - if (cp == NULL) - { - free(demangled); /* not mangled name */ - return mangled; - } - if (cp[1] == '_') /* easy case: no category name */ - { - *cp++ = ' '; /* replace two '_' with one ' ' */ - strcpy(cp, mangled + (cp - demangled) + 2); - } - else - { - *cp++ = '('; /* less easy case: category name */ - cp = strchr(cp, '_'); - if (cp == 0) - { - free(demangled); /* not mangled name */ - return mangled; - } - *cp++ = ')'; - *cp++ = ' '; /* overwriting 1st char of method name... */ - strcpy(cp, mangled + (cp - demangled)); /* get it back */ - } - while (*cp && *cp == '_') - cp++; /* skip any initial underbars in method name */ - for (; *cp; cp++) - if (*cp == '_') - *cp = ':'; /* replace remaining '_' with ':' */ - *cp++ = ']'; /* closing right brace */ - *cp++ = 0; /* string terminator */ - return demangled; - } - else -/* APPLE LOCAL begin radar 4638467,4734562, 3904139 */ -#ifdef OBJCPLUS - return cxx_printable_name (decl, vrb); -#else - return vrb == 2 ? mangled : mangled; /* not an objc mangled name */ -#endif -/* APPLE LOCAL end radar 4638467,4734562, 3904139 */ -} - -const char * -/* APPLE LOCAL radar 4734562 */ -objc_printable_name (tree decl, int vrb) -{ - /* APPLE LOCAL radar 4638467,4734562 */ - return objc_demangle (decl, vrb); -} - -static void -init_objc (void) -{ - gcc_obstack_init (&util_obstack); - util_firstobj = (char *) obstack_finish (&util_obstack); - - errbuf = XNEWVEC (char, 1024 * 10); - hash_init (); - synth_module_prologue (); -} - -static void -finish_objc (void) -{ - struct imp_entry *impent; - tree chain; - /* The internally generated initializers appear to have missing braces. - Don't warn about this. */ - int save_warn_missing_braces = warn_missing_braces; - warn_missing_braces = 0; - - /* A missing @end may not be detected by the parser. */ - if (objc_implementation_context) - { - warning (0, "%<@end%> missing in implementation context"); - finish_class (objc_implementation_context); - objc_ivar_chain = NULL_TREE; - objc_implementation_context = NULL_TREE; - } - - /* Process the static instances here because initialization of objc_symtab - depends on them. */ - if (objc_static_instances) - generate_static_references (); - - if (imp_list || class_names_chain - /* APPLE LOCAL C* property metadata (Radar 4498373) */ - || prop_names_attr_chain - || meth_var_names_chain || meth_var_types_chain || sel_ref_chain) - generate_objc_symtab_decl (); - - for (impent = imp_list; impent; impent = impent->next) - { - objc_implementation_context = impent->imp_context; - implementation_template = impent->imp_template; - - /* APPLE LOCAL begin ObjC new abi */ - if (flag_objc_abi == 2) - { - UOBJC_V2_CLASS_decl = impent->class_v2_decl; - UOBJC_V2_METACLASS_decl = impent->meta_v2_decl; - } - else - { - UOBJC_CLASS_decl = impent->class_decl; - UOBJC_METACLASS_decl = impent->meta_decl; - } - /* APPLE LOCAL end ObjC new abi */ - - /* Dump the @interface of each class as we compile it, if the - -gen-decls option is in use. TODO: Dump the classes in the - order they were found, rather than in reverse order as we - are doing now. */ - if (flag_gen_declaration) - { - dump_interface (gen_declaration_file, objc_implementation_context); - } - - if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) - { - /* all of the following reference the string pool... */ - - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2) - { - generate_v2_ivar_lists (); - generate_v2_dispatch_tables (); - /* APPLE LOCAL C* property metadata (Radar 4498373, 4559114) */ - generate_v2_property_tables (NULL_TREE); - generate_v2_shared_structures (impent->has_cxx_cdtors - /* APPLE LOCAL radar 4923634 */ - ? OBJC2_CLS_HAS_CXX_STRUCTORS - : 0); - } - else - { - generate_ivar_lists (); - generate_dispatch_tables (); - /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ - generate_v2_property_tables (NULL_TREE); - UOBJC_CLASS_EXT_decl = generate_objc_class_ext (UOBJC_V2_PROPERTY_decl); - /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ - - generate_shared_structures (impent->has_cxx_cdtors - ? CLS_HAS_CXX_STRUCTORS - : 0); - } - } - /* APPLE LOCAL end ObjC abi v2 */ - /* APPLE LOCAL radar 4695109 */ - /* PROTOCOL_IMPLEMENTATION_TYPE removed */ - else - { - /* APPLE LOCAL begin ObjC abi v2 */ - if (flag_objc_abi == 2) - { - generate_v2_dispatch_tables (); - /* APPLE LOCAL C* property metadata (Radar 4498373, 4559114) */ - generate_v2_property_tables (NULL_TREE); - generate_v2_category (objc_implementation_context, impent); - } - else - { - generate_dispatch_tables (); - /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ - generate_v2_property_tables (NULL_TREE); - /* APPLE LOCAL radar 4349690 */ - generate_category (objc_implementation_context, impent); - } - /* APPLE LOCAL end ObjC abi v2 */ - } - } - - /* If we are using an array of selectors, we must always - finish up the array decl even if no selectors were used. */ - if (! flag_next_runtime || sel_ref_chain) - build_selector_translation_table (); - - /* APPLE LOCAL begin ObjC abi v2 */ - if (message_ref_chain) - build_message_ref_translation_table (); - if (classlist_ref_chain) - build_classlist_translation_table (false); - if (metaclasslist_ref_chain) - build_classlist_translation_table (true); - /* APPLE LOCAL begin radar 4535676 */ - if (classlist_super_ref_chain) - build_classlist_super_translation_table (false); - if (metaclasslist_super_ref_chain) - build_classlist_super_translation_table (true); - /* APPLE LOCAL end radar 4535676 */ - if (ivar_offset_ref_chain) - generate_v2_ivar_offset_ref_lists (); - if (protocol_chain) - { - if (flag_objc_abi == 2) - { - generate_v2_protocols (); - } - else - generate_protocols (); - } - /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ - if (protocol_list_chain) - build_protocol_list_address_table (); - if (protocollist_ref_chain) - build_protocollist_translation_table (); - /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ - if (class_list_chain) - build_class_list_address_table (false); - if (category_list_chain) - build_category_list_address_table (false); - if (nonlazy_class_list_chain) - build_class_list_address_table (true); - if (nonlazy_category_list_chain) - build_category_list_address_table (true); - /* APPLE LOCAL end ObjC abi v2 */ - - /* APPLE LOCAL radar 4810587 */ - generate_objc_image_info (); - - /* Arrange for ObjC data structures to be initialized at run time. */ - if (objc_implementation_context || class_names_chain || objc_static_instances - || meth_var_names_chain || meth_var_types_chain || sel_ref_chain) - { - /* APPLE LOCAL begin ObjC abi v2 */ - /* APPLE LOCAL radar 4531482 */ - if (flag_objc_abi != 2) - build_module_descriptor (); - /* APPLE LOCAL end ObjC abi v2 */ - - if (!flag_next_runtime) - build_module_initializer_routine (); - } - - /* Dump the class references. This forces the appropriate classes - to be linked into the executable image, preserving unix archive - semantics. This can be removed when we move to a more dynamically - linked environment. */ - - for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain)) - { - handle_class_ref (chain); - if (TREE_PURPOSE (chain)) - generate_classref_translation_entry (chain); - } - - for (impent = imp_list; impent; impent = impent->next) - handle_impent (impent); - - if (warn_selector) - { - int slot; - hash hsh; - - /* Run through the selector hash tables and print a warning for any - selector which has multiple methods. */ - - for (slot = 0; slot < SIZEHASHTABLE; slot++) - { - for (hsh = cls_method_hash_list[slot]; hsh; hsh = hsh->next) - check_duplicates (hsh, 0, 1); - for (hsh = nst_method_hash_list[slot]; hsh; hsh = hsh->next) - check_duplicates (hsh, 0, 1); - } - } - - warn_missing_braces = save_warn_missing_braces; -} - -/* Subroutines of finish_objc. */ - -static void -generate_classref_translation_entry (tree chain) -{ - tree expr, decl, type; - - decl = TREE_PURPOSE (chain); - type = TREE_TYPE (decl); - - expr = add_objc_string (TREE_VALUE (chain), class_names); - expr = convert (type, expr); /* cast! */ - - /* The decl that is the one that we - forward declared in build_class_reference. */ - finish_var_decl (decl, expr); - return; -} - -static void -handle_class_ref (tree chain) -{ - const char *name = IDENTIFIER_POINTER (TREE_VALUE (chain)); - char *string = (char *) alloca (strlen (name) + 30); - tree decl; - tree exp; - - sprintf (string, "%sobjc_class_name_%s", - (flag_next_runtime ? "." : "__"), name); - -#ifdef ASM_DECLARE_UNRESOLVED_REFERENCE - if (flag_next_runtime) - { - ASM_DECLARE_UNRESOLVED_REFERENCE (asm_out_file, string); - return; - } -#endif - - /* Make a decl for this name, so we can use its address in a tree. */ - decl = build_decl (VAR_DECL, get_identifier (string), char_type_node); - DECL_EXTERNAL (decl) = 1; - TREE_PUBLIC (decl) = 1; - - pushdecl (decl); - rest_of_decl_compilation (decl, 0, 0); - - /* Make a decl for the address. */ - sprintf (string, "%sobjc_class_ref_%s", - (flag_next_runtime ? "." : "__"), name); - exp = build1 (ADDR_EXPR, string_type_node, decl); - decl = build_decl (VAR_DECL, get_identifier (string), string_type_node); - DECL_INITIAL (decl) = exp; - TREE_STATIC (decl) = 1; - TREE_USED (decl) = 1; - /* Force the output of the decl as this forces the reference of the class. */ - mark_decl_referenced (decl); - - pushdecl (decl); - rest_of_decl_compilation (decl, 0, 0); -} - -static void -handle_impent (struct imp_entry *impent) -{ - char *string; - - objc_implementation_context = impent->imp_context; - implementation_template = impent->imp_template; - - if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE) - { - const char *const class_name = - IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)); - - string = (char *) alloca (strlen (class_name) + 30); - - sprintf (string, "%sobjc_class_name_%s", - (flag_next_runtime ? "." : "__"), class_name); - } - /* APPLE LOCAL radar 5774213 */ - else if (flag_objc_abi <= 1 && TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - const char *const class_name = - IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)); - const char *const class_super_name = - IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context)); - - string = (char *) alloca (strlen (class_name) - + strlen (class_super_name) + 30); - - /* Do the same for categories. Even though no references to - these symbols are generated automatically by the compiler, it - gives you a handle to pull them into an archive by hand. */ - sprintf (string, "*%sobjc_category_name_%s_%s", - (flag_next_runtime ? "." : "__"), class_name, class_super_name); - } - else - return; - -#ifdef ASM_DECLARE_CLASS_REFERENCE - if (flag_next_runtime) - { - ASM_DECLARE_CLASS_REFERENCE (asm_out_file, string); - return; - } - else -#endif - { - tree decl, init; - - init = build_int_cst (c_common_type_for_size (BITS_PER_WORD, 1), 0); - decl = build_decl (VAR_DECL, get_identifier (string), TREE_TYPE (init)); - TREE_PUBLIC (decl) = 1; - TREE_READONLY (decl) = 1; - TREE_USED (decl) = 1; - TREE_CONSTANT (decl) = 1; - DECL_CONTEXT (decl) = 0; - DECL_ARTIFICIAL (decl) = 1; - DECL_INITIAL (decl) = init; - assemble_variable (decl, 1, 0, 0); - } -} - -/* The Fix-and-Continue functionality available in Mac OS X 10.3 and - later requires that ObjC translation units participating in F&C be - specially marked. The following routine accomplishes this. */ - -/* static int _OBJC_IMAGE_INFO[2] = { 0, 1 }; */ - -static void -generate_objc_image_info (void) -{ - tree decl, initlist; - int flags - = ((flag_replace_objc_classes && imp_list ? 1 : 0) - | (flag_objc_gc ? 2 : 0)); - /* APPLE LOCAL begin radar 4810609 */ - if (flag_objc_gc_only) - flags |= 6; - /* APPLE LOCAL end radar 4810609 */ - /* APPLE LOCAL begin radar 6803242 */ - if (flag_objc_abi == 2) - flags |= 16; - /* APPLE LOCAL end radar 6803242 */ - - /* APPLE LOCAL begin radar 4810587 */ - decl = build_decl (VAR_DECL, get_identifier ("_OBJC_IMAGE_INFO"), - build_array_type - (integer_type_node, - build_index_type (build_int_cst (NULL_TREE, 2 - 1)))); - initlist = build_tree_list (NULL_TREE, integer_zero_node); - initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, flags), initlist); - initlist = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); - TREE_TYPE (initlist) = TREE_TYPE (decl); - /* APPLE LOCAL begin radar 4888238 */ - TREE_PUBLIC (decl) = 0; - TREE_STATIC (decl) = 1; - /* APPLE LOCAL end radar 4888238 */ - TREE_READONLY (decl) = 1; - TREE_USED (decl) = 1; - TREE_CONSTANT (decl) = 1; - DECL_CONTEXT (decl) = 0; - DECL_ARTIFICIAL (decl) = 1; - DECL_INITIAL (decl) = initlist; - assemble_variable (decl, 1, 0, 0); -} - /* APPLE LOCAL end radar 4810587 */ - -/* APPLE LOCAL begin radar 4133425 */ -/* Routine is called to issue diagnostic when reference to a private - ivar is made and no other variable with same name is found in - current scope. */ -bool -objc_diagnose_private_ivar (tree id) -{ - tree ivar; - if (!objc_method_context) - return false; - ivar = is_ivar (objc_ivar_chain, id); - if (ivar && is_private (ivar)) - { - error ("instance variable %qs is declared private", - IDENTIFIER_POINTER (id)); - return true; - } - return false; -} -/* APPLE LOCAL end radar 4133425 */ - -/* Look up ID as an instance variable. OTHER contains the result of - the C or C++ lookup, which we may want to use instead. */ -/* APPLE LOCAL begin C* property (Radar 4436866) */ -/* APPLE LOCAL radar 4668023 */ -/* Support for referencing property name without use of 'self' qualifier is removed */ - -tree -objc_lookup_ivar (tree other, tree id) -{ - tree ivar; - - /* If we are not inside of an ObjC method, ivar lookup makes no sense. */ - if (!objc_method_context) - return other; - - /* APPLE LOCAL begin radar 5796058 - blocks */ - /* Make a quick exit if variable is for a previously declared copied-in - or byref variable used for an 'ivar' access. */ - if (other && TREE_CODE (other) == VAR_DECL && - (BLOCK_DECL_BYREF (other) || BLOCK_DECL_COPIED (other))) - return other; - /* APPLE LOCAL end radar 5796058 - blocks */ - - if (!strcmp (IDENTIFIER_POINTER (id), "super")) - /* We have a message to super. */ - return get_super_receiver (); - - /* In a class method, look up an instance variable only as a last - resort. */ - if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL - && other && other != error_mark_node) - return other; - - /* Look up the ivar, but do not use it if it is not accessible. */ - ivar = is_ivar (objc_ivar_chain, id); - - if (!ivar || is_private (ivar)) - return other; - - /* In an instance method, a local variable (or parameter) may hide the - instance variable. */ - if (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL - && other && other != error_mark_node -#ifdef OBJCPLUS - && CP_DECL_CONTEXT (other) != global_namespace) -#else - && !DECL_FILE_SCOPE_P (other)) -#endif - { - warning (0, "local declaration of %qs hides instance variable", - IDENTIFIER_POINTER (id)); - - return other; - } - - /* At this point, we are either in an instance method with no obscuring - local definitions, or in a class method with no alternate definitions - at all. */ - return build_ivar_reference (id); -} -/* APPLE LOCAL end C* property (Radar 4436866) */ - -/* Possibly rewrite a function CALL into an OBJ_TYPE_REF expression. This - needs to be done if we are calling a function through a cast. */ - -tree -objc_rewrite_function_call (tree function, tree params) -{ - if (TREE_CODE (function) == NOP_EXPR - && TREE_CODE (TREE_OPERAND (function, 0)) == ADDR_EXPR - && TREE_CODE (TREE_OPERAND (TREE_OPERAND (function, 0), 0)) - == FUNCTION_DECL) - { - function = build3 (OBJ_TYPE_REF, TREE_TYPE (function), - TREE_OPERAND (function, 0), - TREE_VALUE (params), size_zero_node); - } - - return function; -} - -/* APPLE LOCAL begin radar 5802025 */ -tree objc_build_property_getter_func_call (tree pref_expr) -{ - tree getter_call; - tree save_UOBJC_SUPER_decl = UOBJC_SUPER_decl; - UOBJC_SUPER_decl = TREE_OPERAND (pref_expr, 2); - getter_call = objc_build_getter_call (TREE_OPERAND (pref_expr, 0), - TREE_OPERAND (pref_expr, 1)); - UOBJC_SUPER_decl = save_UOBJC_SUPER_decl; - return getter_call; -} -/* APPLE LOCAL end radar 5802025 */ - -/* Look for the special case of OBJC_TYPE_REF with the address of - a function in OBJ_TYPE_REF_EXPR (presumably objc_msgSend or one - of its cousins). */ - -enum gimplify_status -objc_gimplify_expr (tree *expr_p, tree *pre_p, tree *post_p) -{ - enum gimplify_status r0, r1; - if (TREE_CODE (*expr_p) == OBJ_TYPE_REF - && TREE_CODE (OBJ_TYPE_REF_EXPR (*expr_p)) == ADDR_EXPR - && TREE_CODE (TREE_OPERAND (OBJ_TYPE_REF_EXPR (*expr_p), 0)) - == FUNCTION_DECL) - { - /* Postincrements in OBJ_TYPE_REF_OBJECT don't affect the - value of the OBJ_TYPE_REF, so force them to be emitted - during subexpression evaluation rather than after the - OBJ_TYPE_REF. This permits objc_msgSend calls in Objective - C to use direct rather than indirect calls when the - object expression has a postincrement. */ - r0 = gimplify_expr (&OBJ_TYPE_REF_OBJECT (*expr_p), pre_p, NULL, - is_gimple_val, fb_rvalue); - r1 = gimplify_expr (&OBJ_TYPE_REF_EXPR (*expr_p), pre_p, post_p, - is_gimple_val, fb_rvalue); - - return MIN (r0, r1); - } - /* APPLE LOCAL begin radar 5276085 */ - else if (TREE_CODE (*expr_p) == OBJC_WEAK_REFERENCE_EXPR) - { - tree expr = TREE_OPERAND (*expr_p, 0); - tree t = TREE_TYPE (expr); - expr = objc_build_weak_read (expr); - expr = convert (t, expr); - *expr_p = expr; - } - /* APPLE LOCAL end radar 5276085 */ - /* APPLE LOCAL begin radar 5285911 5494488 */ - else if (objc_property_reference_expr (*expr_p)) - /* APPLE LOCAL radar 5802025 */ - *expr_p = objc_build_property_getter_func_call (*expr_p); - /* APPLE LOCAL end radar 5285911 5494488 */ - -#ifdef OBJCPLUS - return cp_gimplify_expr (expr_p, pre_p, post_p); -#else - return c_gimplify_expr (expr_p, pre_p, post_p); -#endif -} - -/* Given a CALL expression, find the function being called. The ObjC - version looks for the OBJ_TYPE_REF_EXPR which is used for objc_msgSend. */ - -tree -objc_get_callee_fndecl (tree call_expr) -{ - tree addr = TREE_OPERAND (call_expr, 0); - if (TREE_CODE (addr) != OBJ_TYPE_REF) - return 0; - - addr = OBJ_TYPE_REF_EXPR (addr); - - /* If the address is just `&f' for some function `f', then we know - that `f' is being called. */ - if (TREE_CODE (addr) == ADDR_EXPR - && TREE_CODE (TREE_OPERAND (addr, 0)) == FUNCTION_DECL) - return TREE_OPERAND (addr, 0); - - return 0; -} - -/* APPLE LOCAL begin C* language */ - -/* This routine builds the following type. - - struct __objcFastEnumerationState { - unsigned long state; - id *itemsPtr; - unsigned long *mutationsPtr; - unsigned long extra[5]; - }; */ - -static void -build_objc_fast_enum_state_type (void) -{ - tree field_decl, field_decl_chain; - objc_fast_enum_state_type = start_struct (RECORD_TYPE, - get_identifier ("__objcFastEnumerationState")); - - /* unsigned long state; */ - field_decl = create_field_decl (long_unsigned_type_node, "state"); - field_decl_chain = field_decl; - - /* id *itemsPtr; */ - field_decl = create_field_decl (build_pointer_type (objc_object_type), "itemsPtr"); - chainon (field_decl_chain, field_decl); - - /* unsigned long *mutationsPtr; */ - field_decl = create_field_decl (build_pointer_type ( - long_unsigned_type_node), "mutationsPtr"); - chainon (field_decl_chain, field_decl); - - /* unsigned long extra[5]; */ - field_decl = create_field_decl (build_array_type - (long_unsigned_type_node, - build_index_type - (build_int_cst (NULL_TREE, 5 - 1))), - "extra"); - chainon (field_decl_chain, field_decl); - - finish_struct (objc_fast_enum_state_type, field_decl_chain, NULL_TREE); -} - -/* This routine creates a named temporary local variable. */ - -static tree -objc_create_named_tmp_var (tree type, const char *prefix) -{ - tree decl = create_tmp_var_raw (type, prefix); - DECL_CONTEXT (decl) = current_function_decl; - return decl; -} - -/* This routine builds and returns an assortment of objc components needed in - synthesis of the foreach statement; including: - - __objcFastEnumerationState enumState = { 0 }; - id items[16]; - unsigned long limit; - unsigned long startMutations; - unsigned long counter; - [collection countByEnumeratingWithState:&enumState objects:items count:16]; - - it returns expression for: - objc_enumerationMutation (self) */ - -tree -objc_build_foreach_components (tree receiver, tree *enumState_decl, - tree *items_decl, - tree *limit_decl, - tree *startMutations_decl, - tree *counter_decl, - tree *countByEnumeratingWithState) -{ - tree constructor_fields, initlist, init; - tree type, exp; - tree sel_name, method_params; - - tree fast_enum_state_type = objc_fast_enum_state_type; - tree enum_st_type_decl = lookup_name (get_identifier ("NSFastEnumerationState")); - /* APPLE LOCAL radar 4531086 */ - OBJC_WARN_OBJC2_FEATURES ("foreach-collection-statement"); - if (enum_st_type_decl && TREE_CODE (enum_st_type_decl) == TYPE_DECL) - fast_enum_state_type = DECL_ORIGINAL_TYPE (enum_st_type_decl) - ? DECL_ORIGINAL_TYPE (enum_st_type_decl) - : TREE_TYPE (enum_st_type_decl); - gcc_assert (fast_enum_state_type != NULL_TREE - && TREE_CODE (fast_enum_state_type) == RECORD_TYPE); - constructor_fields = TYPE_FIELDS (fast_enum_state_type); - /* __objcFastEnumerationState enumState = { 0 }; */ - *enumState_decl = objc_create_named_tmp_var (fast_enum_state_type, "cstar"); - /* APPLE LOCAL begin radar 6285794 */ - initlist = build_tree_list (constructor_fields, - convert (TREE_TYPE(constructor_fields), - integer_zero_node)); - /* APPLE LOCAL end radar 6285794 */ - init = objc_build_constructor (fast_enum_state_type, initlist); - DECL_INITIAL (*enumState_decl) = init; - - /* id items[16]; */ - type = build_array_type (objc_object_type, - build_index_type (build_int_cst (NULL_TREE, 16 - 1))); - *items_decl = objc_create_named_tmp_var (type, "cstar"); - - /* unsigned long limit */ - *limit_decl = objc_create_named_tmp_var (long_unsigned_type_node, "cstar"); - - /* unsigned long startMutations */ - *startMutations_decl = objc_create_named_tmp_var (long_unsigned_type_node, "cstar"); - - /* unsigned long counter */ - *counter_decl = objc_create_named_tmp_var (long_unsigned_type_node, "cstar"); - - /* [collection countByEnumeratingWithState:&enumState objects:items count:16] */ - sel_name = get_identifier ("countByEnumeratingWithState:objects:count:"); - exp = build_fold_addr_expr (*enumState_decl); - method_params = build_tree_list (NULL_TREE, exp); -/* APPLE LOCAL begin radar 4708210 (for_objc_collection in 4.2) */ -#ifndef OBJCPLUS - { - struct c_expr cexpr; - /* In C need to decay array objects when passing to functions. */ - cexpr.value = *items_decl; - chainon (method_params, - build_tree_list (NULL_TREE, - default_function_array_conversion (cexpr).value)); - } -#else - chainon (method_params, - build_tree_list (NULL_TREE, *items_decl)); -#endif -/* APPLE LOCAL end radar 4708210 (for_objc_collection in 4.2) */ - chainon (method_params, - build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, 16))); - - exp = objc_finish_message_expr (receiver, sel_name, method_params); - *countByEnumeratingWithState = exp; - - /* objc_enumerationMutation (self) */ - exp = build_function_call (objc_enum_mutation_decl, - build_tree_list (NULL_TREE, save_expr (receiver))); - - return exp; -} - -/* This routine returns true if TYP is a valid objc object type, - suitable for messaging; false otherwise. */ - -bool -objc_type_valid_for_messaging (tree typ) -{ - /* APPLE LOCAL begin radar 5831920 */ - if (TREE_CODE (typ) == BLOCK_POINTER_TYPE) - return true; - /* APPLE LOCAL end radar 5831920 */ - - if (!POINTER_TYPE_P (typ)) - return false; - - /* APPLE LOCAL begin radar 5595325 */ - if (objc_nsobject_attribute_type (typ)) - return true; - /* APPLE LOCAL end radar 5595325 */ - do - typ = TREE_TYPE (typ); /* Remove indirections. */ - while (POINTER_TYPE_P (typ)); - - if (TREE_CODE (typ) != RECORD_TYPE) - return false; - - /* type 'Class' is OK */ - return objc_is_object_id (typ) - || objc_is_class_id (typ) || TYPE_HAS_OBJC_INFO (typ); -} - -#ifndef OBJCPLUS -/* Synthesizer routine for C*'s feareach statement. - - It synthesizes: - for ( type elem in collection) { stmts; } - - Into: - { - type elem; - __objcFastEnumerationState enumState = { 0 }; - id items[16]; - - unsigned long limit = [collection countByEnumeratingWithState:&enumState objects:items count:16]; - if (limit) { - unsigned long startMutations = *enumState.mutationsPtr; - do { - unsigned long counter = 0; - do { - if (startMutations != *enumState.mutationsPtr) objc_enumerationMutation(collection); - elem = enumState.itemsPtr[counter++]; - stmts; - } while (counter < limit); - } while (limit = [collection countByEnumeratingWithState:&enumState objects:items count:16]); - } - else - elem = nil; radar 4854605, 5128402 */ - -void -objc_finish_foreach_loop (location_t location, tree cond, tree for_body, tree blab, tree clab) -{ - tree enumState_decl, items_decl, limit_decl, limit_decl_assign_expr; - tree startMutations_decl, counter_decl; - tree enumerationMutation_call_exp, countByEnumeratingWithState; - tree exp; - tree receiver, elem_decl; - tree bind; - tree if_condition, do_condition; - tree outer_if_body, inner_if_body; - tree outer_if_block_start, inner_if_block_start; - tree outer_do_body, inner_do_body; - tree inner_do_block_start, outer_do_block_start; - tree body; - location_t save_input_location = input_location; - tree exit_label; - /* APPLE LOCAL radar 4854605 - radar 5128402 */ - tree outer_else_body; - - receiver = TREE_VALUE (cond); - elem_decl = TREE_PURPOSE (cond); - - /* APPLE LOCAL begin radar 5130983 */ - if (!lvalue_or_else (&elem_decl, lv_foreach)) - return; - /* APPLE LOCAL end radar 5130983 */ - - if (!objc_type_valid_for_messaging (TREE_TYPE (elem_decl))) - { - error ("selector element does not have a valid object type"); - return; - } - - if (!objc_type_valid_for_messaging (TREE_TYPE (receiver))) - { - error ("expression does not have a valid object type"); - return; - } - - input_location = location; - enumerationMutation_call_exp = objc_build_foreach_components (receiver, &enumState_decl, - &items_decl, &limit_decl, - &startMutations_decl, &counter_decl, - &countByEnumeratingWithState); - - /* __objcFastEnumerationState enumState = { 0 }; */ - exp = build_stmt (DECL_EXPR, enumState_decl); - bind = build3 (BIND_EXPR, void_type_node, enumState_decl, exp, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - - /* id items[16]; */ - bind = build3 (BIND_EXPR, void_type_node, items_decl, NULL, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - - /* Generate this statement and add it to the list. */ - /* limit = [collection countByEnumeratingWithState:&enumState objects:items count:16] */ - limit_decl_assign_expr = build2 (MODIFY_EXPR, TREE_TYPE (limit_decl), limit_decl, - countByEnumeratingWithState); - bind = build3 (BIND_EXPR, void_type_node, limit_decl, NULL, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - - outer_if_block_start = c_begin_compound_stmt (true); - /* if (limit) { */ - outer_if_body = c_begin_compound_stmt (true); - - /* unsigned long startMutations = *enumState.mutationsPtr; */ - exp = objc_build_component_ref (enumState_decl, get_identifier("mutationsPtr")); - exp = build_indirect_ref (exp, "unary *"); - exp = build2 (MODIFY_EXPR, void_type_node, startMutations_decl, exp); - bind = build3 (BIND_EXPR, void_type_node, startMutations_decl, exp, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - - outer_do_block_start = c_begin_compound_stmt (true); - /* do { */ - outer_do_body = c_begin_compound_stmt (true); - - /* unsigned long counter = 0; */ - exp = build2 (MODIFY_EXPR, void_type_node, counter_decl, - fold_convert (TREE_TYPE (counter_decl), integer_zero_node)); - bind = build3 (BIND_EXPR, void_type_node, counter_decl, exp, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - - inner_do_block_start = c_begin_compound_stmt (true); - /* do { */ - inner_do_body = c_begin_compound_stmt (true); - - inner_if_block_start = c_begin_compound_stmt (true); - /* if (startMutations != *enumState.mutationsPtr) objc_enumerationMutation (collection); */ - inner_if_body = c_begin_compound_stmt (true); - exp = objc_build_component_ref (enumState_decl, - get_identifier ("mutationsPtr")); - exp = build_indirect_ref (exp, "unary *"); - if_condition = build_binary_op (NE_EXPR, startMutations_decl, exp, 1); - body = build_function_call (objc_enum_mutation_decl, - build_tree_list (NULL_TREE, save_expr (receiver))); - add_stmt (body); - inner_if_body = c_end_compound_stmt (inner_if_body, true); - c_finish_if_stmt (location, if_condition, inner_if_body, NULL, false); - add_stmt (c_end_compound_stmt (inner_if_block_start, true)); - - /* elem = enumState.itemsPtr [counter]; */ - exp = objc_build_component_ref (enumState_decl, get_identifier("itemsPtr")); - exp = build_array_ref (exp, counter_decl); - add_stmt (build2 (MODIFY_EXPR, void_type_node, elem_decl, exp)); - TREE_USED (elem_decl) = 1; - - /* counter++; */ - exp = build2 (PLUS_EXPR, TREE_TYPE (counter_decl), counter_decl, - build_int_cst (NULL_TREE, 1)); - add_stmt (build2 (MODIFY_EXPR, void_type_node, counter_decl, exp)); - - /* stmts; */ - add_stmt (for_body); - - /* } while (counter < limit ); */ - do_condition = build_binary_op (LT_EXPR, counter_decl, limit_decl, 1); - inner_do_body = c_end_compound_stmt (inner_do_body, true); -/* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \ - c_finish_loop (location, do_condition, NULL, inner_do_body, NULL_TREE, clab, - NULL_TREE, false); -/* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \ - add_stmt (c_end_compound_stmt (inner_do_block_start, true)); - - /* } while (limit = [collection countByEnumeratingWithState:&enumState objects:items count:16]); */ - exp = unshare_expr (limit_decl_assign_expr); - do_condition = build_binary_op (NE_EXPR, exp, - fold_convert (TREE_TYPE (limit_decl), integer_zero_node), - 1); - outer_do_body = c_end_compound_stmt (outer_do_body, true); - /* New spec. requires that if no match was found; i.e. foreach exited with - no match, 'elem' be set to nil. So, we use a new label for getting out of - of the outer while loop and set 'elem=nill' after this label. */ - exit_label = create_artificial_label (); -/* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \ - c_finish_loop (location, do_condition, NULL, outer_do_body, exit_label, - NULL_TREE, NULL_TREE, false); -/* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \ - /* elem = nil */ - add_stmt (build2 (MODIFY_EXPR, void_type_node, elem_decl, - fold_convert (TREE_TYPE (elem_decl), integer_zero_node))); - if (blab) - add_stmt (build1 (LABEL_EXPR, void_type_node, blab)); - add_stmt (c_end_compound_stmt (outer_do_block_start, true)); - - /* } */ - if_condition = unshare_expr (do_condition); - outer_if_body = c_end_compound_stmt (outer_if_body, true); - /* APPLE LOCAL begin radar 4854605 - radar 5128402 */ - /* else {elem = nil; } */ - outer_else_body = c_begin_compound_stmt (true); - add_stmt (build2 (MODIFY_EXPR, void_type_node, elem_decl, - fold_convert (TREE_TYPE (elem_decl), integer_zero_node))); - outer_else_body = c_end_compound_stmt (outer_else_body, true); - c_finish_if_stmt (location, if_condition, outer_if_body, outer_else_body, false); - /* APPLE LOCAL end radar 4854605 - radar 5128402 */ - add_stmt (c_end_compound_stmt (outer_if_block_start, true)); - input_location = save_input_location; - return; -} -#endif - -/* This routine issues a diagnostic if a @selector expression is - type cast to anothing other than SEL. */ -void -diagnose_selector_cast (tree cast_type, tree sel_exp) -{ - tree type = TREE_TYPE (sel_exp); - if (type) - { - if (type == objc_selector_type && cast_type != objc_selector_type) - /* @selector expression type cast to something other than a - matching type. */ - if (flag_objc_abi == 2 || flag_objc2_check) - warning (0, "type-cast of @selector expression won't be supported in future"); - } -} - -bool -objc_method_decl (enum tree_code opcode) -{ - return opcode == INSTANCE_METHOD_DECL || opcode == CLASS_METHOD_DECL; -} - -/* - This routine builds a comma-expr tree represents pre/post incr/decr expression - tree of the a property (see below). - - CODE is one of POSTINCREMENT_EXPR (prop++), POSTDECREMENT_EXPR (prop--), - PREINCREMENT_EXPR (++prop), PREDECREMENT_EXPR (--prop). - GETTER_EXPR is the property in the form of a property getter call. - INC is the amount property is incrmented or decremented by. - - for POSTINCREMENT_EXPR we generate: (tmp = prop, prop = tmp+1, tmp). - for POSTDECREMENT_EXPR we generate: (tmp = prop, prop = tmp-1, tmp). - for PREINCREMENT_EXPR we generate: (tmp = prop+1, prop = tmp, tmp). - for PREDECREMENT_EXPR we generate: (tmp = prop-1, prop = tmp, tmp). - Function returns NULL_TREE (if not a valid property tree) or above - comma-expression tree. -*/ - -static tree -objc_build_compound_incr_decr_setter_call (tree receiver, tree prop_ident, - enum tree_code code, tree getter_expr, - tree inc) -{ - tree temp, bind, rhs, comma_exp; - temp = objc_create_named_tmp_var (TREE_TYPE (inc), "prop"); - bind = build3 (BIND_EXPR, void_type_node, temp, NULL, NULL); - TREE_SIDE_EFFECTS (bind) = 1; - add_stmt (bind); - /* build rhs expression of 'tmp = exp' statement. */ - if (code == POSTINCREMENT_EXPR || code == POSTDECREMENT_EXPR) - rhs = getter_expr; - else if (code == PREINCREMENT_EXPR) - rhs = build2 (PLUS_EXPR, TREE_TYPE (inc), getter_expr, inc); - else - rhs = build2 (MINUS_EXPR, TREE_TYPE (inc), getter_expr, inc); - /* tmp = rhs; */ - comma_exp = build_modify_expr (temp, NOP_EXPR, rhs); - - /* Now build rhs of 'prop = tmp' statement. */ - if (code == PREINCREMENT_EXPR || code == PREDECREMENT_EXPR) - rhs = temp; - else if (code == POSTINCREMENT_EXPR) - rhs = build2 (PLUS_EXPR, TREE_TYPE (inc), temp, inc); - else - rhs = build2 (MINUS_EXPR, TREE_TYPE (inc), temp, inc); - comma_exp = build_compound_expr (comma_exp, - objc_setter_func_call (receiver, prop_ident, rhs)); - /* Shut-off C++ warning on comma-expr with no side-effect. */ - TREE_NO_WARNING (temp) = 1; - return build_compound_expr (comma_exp, temp); -} - -/* APPLE LOCAL begin radar 5285911 */ -/* - global main routine to build property's version of pre/post incr/decr - expression tree. - - CODE is one of POSTINCREMENT_EXPR (prop++), POSTDECREMENT_EXPR (prop--), - PREINCREMENT_EXPR (++prop), PREDECREMENT_EXPR (--prop). - LHS is the property in the form of OBJC_PROPERTY_REFERENCE_EXPR tree. - INC is the amount property is incrmented or decremented by. -*/ - -tree -objc_build_incr_decr_setter_call (enum tree_code code, tree lhs, tree inc) -{ - if (objc_property_reference_expr (lhs)) - { - tree expr = objc_build_getter_call (TREE_OPERAND (lhs, 0), TREE_OPERAND (lhs, 1)); - return objc_build_compound_incr_decr_setter_call - (TREE_OPERAND (lhs, 0), TREE_OPERAND (lhs, 1), code, expr, inc); - } - return NULL_TREE; - -} -/* APPLE LOCAL end radar 5285911 */ - -/* APPLE LOCAL begin radar 5040740 */ -/* This routine looks up the PROPERTY in the INTERFACE_TYPE class or one of its - super classes. */ -static tree -lookup_nested_property (tree interface_type, tree property) -{ - tree inter = interface_type; - while (inter) - { - tree x; - if ((x = lookup_property_in_list (inter, property))) - return x; - /* Failing that, climb up the inheritance hierarchy. */ - inter = lookup_interface (CLASS_SUPER_NAME (inter)); - } - return NULL_TREE; -} - -/* This routine looks up METHOD_NAME in the INTERFACE_TYPE class or one of its - super class. */ -static tree -lookup_nested_method (tree interface_type, tree method_name) -{ - tree inter = interface_type; - while (inter) - { - tree x; - /* APPLE LOCAL begin radar 5777307 */ - /* When property is declared as @optional in a protocol declaration, - must also seach for the setter/getter method declarations in - the protocols because they have no declaration in the 'inter' - class. */ - if ((x = lookup_method (CLASS_NST_METHODS (inter), method_name)) || - (x = lookup_method_in_protocol_list - (CLASS_PROTOCOL_LIST (inter), method_name, 0))) - /* APPLE LOCAL end radar 5777307 */ - return x; - /* Failing that, climb up the inheritance hierarchy. */ - inter = lookup_interface (CLASS_SUPER_NAME (inter)); - } - return NULL_TREE; -} - -/* APPLE LOCAL end radar 5040740 */ - -/* APPLE LOCAL begin radar 5435299 */ -/* lookup_property_impl_in_list - Look for an existing property - @synthesize/@dynamic in current implementation. -*/ -static tree -lookup_property_impl_in_list (tree chain, tree property) -{ - tree x; - for (x = IMPL_PROPERTY_DECL (chain); x; x = TREE_CHAIN (x)) - if (PROPERTY_NAME (x) == property) - return x; - return NULL_TREE; -} - -/* lookup_ivar_in_property_list - Searches current property list looking for - one which uses the given ivar_name. If found, it returns this property. -*/ - -static tree -lookup_ivar_in_property_list (tree chain, tree ivar_name) -{ - tree x; - for (x = IMPL_PROPERTY_DECL (chain); x; x = TREE_CHAIN (x)) - if (PROPERTY_IVAR_NAME (x) == ivar_name) - return x; - return NULL_TREE; -} - -/* APPLE LOCAL end radar 5435299 */ - -/* APPLE LOCAL begin radar 6209554 */ -static void error_previous_property_decl (tree x) -{ tree decl = build_decl (VAR_DECL, DECL_NAME (x), TREE_TYPE (x)); - DECL_SOURCE_LOCATION (decl) = DECL_SOURCE_LOCATION (x); - error ("previous property declaration of %q+D was here", decl); -} -/* APPLE LOCAL end radar 6209554 */ -/* This routine declares a new property implementation. Triggered by a @synthesize or - @dynamic declaration. */ -void objc_declare_property_impl (int impl_code, tree tree_list) -{ - tree chain, interface, class; - if (tree_list == error_mark_node - || TREE_PURPOSE (tree_list) == error_mark_node - || TREE_VALUE (tree_list) == error_mark_node) - return; - /* Find the @interface for this @implementation. */ - /* APPLE LOCAL begin radar 5265608 */ - if (objc_implementation_context == NULL_TREE) - { - error ("@%s property must be in implementation context", - impl_code == 1 ? "synthesize" : "dynamic"); - return; - } - /* APPLE LOCAL end radar 5265608 */ - interface = lookup_interface (CLASS_NAME (objc_implementation_context)); - if (!interface) - { - error ("%s property may not be specified in implementation without an interface", - impl_code == 1 ? "synthesize" : "dynamic"); - return; - } - class = interface; - if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) - { - /* APPLE LOCAL begin radar 5180172 */ - if (impl_code == 1) /* @synthesize */ - error ("@synthesize not allowed in a category's implementation"); - interface = lookup_category (interface, - CLASS_SUPER_NAME (objc_implementation_context)); - if (!interface && (impl_code == 2)) /* @dynamic */ - { - error ("@dynamic may not be specified in category without an interface"); - return; - } - /* APPLE LOCAL end radar 5180172 */ - } - - if (impl_code == 1 || impl_code == 2) - { - for (chain = tree_list; chain; chain = TREE_CHAIN (chain)) - { - tree property_name = TREE_VALUE (chain); - tree x; - if (!property_name) - continue; - /* APPLE LOCAL begin radar 5040740 */ - /* Look up this property in the @interface declaration or in its superclass(s). */ - x = lookup_nested_property (interface, property_name); - /* APPLE LOCAL end radar 5040740 */ - if (!x) - error ("no declaration of property %qs found in the interface", - IDENTIFIER_POINTER (property_name)); - else - { - tree property_decl = copy_node (x); - - /* APPLE LOCAL radar 5839812 location for synthesized methods */ - DECL_SOURCE_LOCATION (property_decl) = input_location; - - if (impl_code == 2) /* @dynamic ... */ - PROPERTY_DYNAMIC (property_decl) = boolean_true_node; - else - { - /* @synthesize ... */ - tree ivar_decl; - tree ivar_name = TREE_PURPOSE (chain); - /* If 'ivar' unspecified, then an instance variable with same name as - property name must be used. */ - if (!ivar_name) - ivar_name = property_name; - /* APPLE LOCAL radar 5435299 */ - PROPERTY_IVAR_NAME (property_decl) = ivar_name; - ivar_decl = nested_ivar_lookup (class, ivar_name); - /* APPLE LOCAL begin radar 5847641 */ - if (flag_objc_abi <= 1 && TREE_PURPOSE (chain) && !ivar_decl) - warning (0, "ivar name %qs specified on the synthesized property %qs not found", - IDENTIFIER_POINTER (ivar_name), IDENTIFIER_POINTER (property_name)) ; - /* APPLE LOCAL end radar 5847641 */ - if (ivar_decl) - { - /* Check for semnatic correctness of the existing ivar. */ - tree ivar_type = DECL_BIT_FIELD_TYPE (ivar_decl) - ? DECL_BIT_FIELD_TYPE (ivar_decl) - : TREE_TYPE (ivar_decl); - /* APPLE LOCAL begin radar 6029624 */ - tree property_type = TREE_TYPE (property_decl); - bool comparison_result; - /* APPLE LOCAL begin radar 5435299 - radar 6825962 */ - if (flag_new_property_ivar_synthesis && flag_objc_abi == 2) { - /* In ObjC2 abi, it is illegal when a @synthesize with no named ivar - does not have a matching ivar in its class but some superclass ivar - already has the desired name */ - tree record = CLASS_STATIC_TEMPLATE (class); - if (record && record != DECL_CONTEXT (ivar_decl)) - error ("property %qs attempting to use ivar %qs declared in super class of %qs", - IDENTIFIER_POINTER (property_name), - IDENTIFIER_POINTER (ivar_name), - IDENTIFIER_POINTER (OBJC_TYPE_NAME (record))); - } - /* APPLE LOCAL end radar 5435299 - radar 6825962 */ - /* APPLE LOCAL begin radar 5389292 */ -#ifdef OBJCPLUS - if (TREE_CODE (property_type) == REFERENCE_TYPE) - { - property_type = TREE_TYPE (property_type); - comparison_result = - !objcp_reference_related_p (property_type, ivar_type); - } - else -#endif - comparison_result = comptypes (ivar_type, property_type) != 1; - if (comparison_result - /* APPLE LOCAL radar 6231433 */ - && !objc_compare_types (property_type, ivar_type, -5, NULL_TREE, NULL)) - /* APPLE LOCAL end radar 6029624 */ - /* APPLE LOCAL end radar 5389292 */ - { - error ("type of property %qs does not match type of ivar %qs", - IDENTIFIER_POINTER (property_name), IDENTIFIER_POINTER (ivar_name)); - PROPERTY_DYNAMIC (property_decl) = boolean_true_node; /* recover */ - } - if (flag_objc_gc) - { - int strong = objc_is_gcable_type (property_type); - if (strong) - { - /* APPLE LOCAL radar 5389292 */ - int gc_able = objc_is_gcable_type (ivar_type); - if (strong != gc_able) - { - if (strong == -1) - error ("existing ivar %qs for the '__weak' property %qs must be __weak", - IDENTIFIER_POINTER (ivar_name), - IDENTIFIER_POINTER (property_name)); - else /* strong == 1 */ - error ("existing ivar %qs for a '__strong' property %qs must be garbage collectable", - IDENTIFIER_POINTER (ivar_name), - IDENTIFIER_POINTER (property_name)); - } - } - } - } - /* APPLE LOCAL begin radar 5435299 - radar 6209554 */ - else if (flag_new_property_ivar_synthesis) - objc_lookup_property_ivar (class, property_decl); - if (flag_new_property_ivar_synthesis && - (x = lookup_ivar_in_property_list (objc_implementation_context, - ivar_name))) - { - error ("synthesized properties %qs and %qs both claim ivar %qs", - IDENTIFIER_POINTER (property_name), - IDENTIFIER_POINTER (DECL_NAME (x)), - IDENTIFIER_POINTER (ivar_name)); - error_previous_property_decl (x); - } - /* APPLE LOCAL end radar 5435299 - radar 6209554 */ - } - /* APPLE LOCAL begin radar 5435299 - radar 6209554 */ - if (flag_new_property_ivar_synthesis && - (x = lookup_property_impl_in_list (objc_implementation_context, property_name))) - { - error ("property %qs is already implemented", - IDENTIFIER_POINTER (property_name)); - error_previous_property_decl (x); - } - /* APPLE LOCAL end radar 5435299 - radar 6209554 */ - /* Add the property to the list of properties for current implementation. */ - TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); - IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; - } - } - } - else - gcc_assert (false); -} -/* APPLE LOCAL end C* language */ - -/* APPLE LOCAL begin radar 4985544 - 5195402 */ -/* Check that TYPE is an "NSString *" type. */ -bool -objc_check_nsstring_pointer_type (tree type) -{ - tree NSString_type; - - if (TREE_CODE (type) != POINTER_TYPE) - return false; - NSString_type = buildNSStringType(); - if (!NSString_type) - return false; - return (TYPE_MAIN_VARIANT (TREE_TYPE (type)) == NSString_type); -} - -/* This routine checks that FORMAT_NUM'th argument ARGUMENT has the 'NSString *' type. */ - -bool -objc_check_format_nsstring (tree argument, - unsigned HOST_WIDE_INT format_num, - bool *no_add_attrs) -{ - unsigned HOST_WIDE_INT i; - - for (i = 1; i != format_num; i++) - { - if (argument == 0) - break; - argument = TREE_CHAIN (argument); - } - if (!argument || !objc_check_nsstring_pointer_type (TREE_VALUE (argument))) - { - error ("format NSString argument not an 'NSString *' type"); - *no_add_attrs = true; - return false; - } - return true; -} -/* APPLE LOCAL end radar 4985544 - 5195402 */ - -/* APPLE LOCAL begin radar 5202926 */ -/* This routine returns 'true' if given NAME is the special objective-c - anonymous file-scope static name. It accomodates c++'s mangling of such - symbols as a result of radar 5173149. */ -bool -objc_anonymous_local_objc_name (const char * name) -{ - const char *p = name; -#ifdef OBJCPLUS - if (!strncmp (p, "_ZL", 3)) - { - p += 3; - while (p && ISDIGIT (*p)) - p++; - } -#endif - return p && !strncmp (p, "_OBJC_", 6); -} -/* APPLE LOCAL end radar 5202926 */ - -/* APPLE LOCAL begin radar 5355344 */ -/* Checks that list has nothing but protocols; returns TRUE or FALSE accordingly. -*/ - -bool -cp_objc_protocol_id_list (tree protocols) -{ - tree proto; - if (!protocols) - return false; - for (proto = protocols; proto; proto = TREE_CHAIN (proto)) - { - tree ident = TREE_VALUE (proto); - tree p = lookup_protocol (ident); - if (!p) - return false; - } - return true; -} -/* APPLE LOCAL end radar 5355344 */ -/* APPLE LOCAL begin radar 5376125 */ -/* This routine checks for direct access to a pointer to object ivar and issues a warning - if done so. */ -static void -objc_warn_direct_ivar_access (tree basetype, tree component) -{ - while (basetype != NULL_TREE - && TREE_CODE (basetype) == RECORD_TYPE && OBJC_TYPE_NAME (basetype) - && TREE_CODE (OBJC_TYPE_NAME (basetype)) == TYPE_DECL - && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype))) - basetype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype)); - if (basetype != NULL_TREE && TYPED_OBJECT (basetype)) - { - tree interface_type = TYPE_OBJC_INTERFACE (basetype); - if (interface_type && - TREE_CODE (interface_type) == CLASS_INTERFACE_TYPE) - { - tree ivar = nested_ivar_lookup (interface_type, component); - if (ivar && managed_objc_object_pointer (TREE_TYPE (ivar))) - warning (0, "ivar %qs is being directly accessed", IDENTIFIER_POINTER (component)); - } - } - return; -} -/* APPLE LOCAL end radar 5376125 */ -/* APPLE LOCAL begin radar 5782740 - blocks */ -bool block_requires_copying (tree exp) -{ - return TREE_CODE (TREE_TYPE (exp)) == BLOCK_POINTER_TYPE || - objc_is_object_ptr (TREE_TYPE (exp)); -} -/* APPLE LOCAL end radar 5782740 - blocks */ -#include "gt-objc-objc-act.h" |