diff options
Diffstat (limited to 'gcc-4.8.3/gcc/c-family/c-common.h')
| -rw-r--r-- | gcc-4.8.3/gcc/c-family/c-common.h | 1136 |
1 files changed, 1136 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/c-family/c-common.h b/gcc-4.8.3/gcc/c-family/c-common.h new file mode 100644 index 000000000..4014651b8 --- /dev/null +++ b/gcc-4.8.3/gcc/c-family/c-common.h @@ -0,0 +1,1136 @@ +/* Definitions for c-common.c. + Copyright (C) 1987-2013 Free Software Foundation, Inc. + +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 3, 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 COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_C_COMMON_H +#define GCC_C_COMMON_H + +#include "splay-tree.h" +#include "cpplib.h" +#include "ggc.h" +#include "tree.h" + +/* In order for the format checking to accept the C frontend + diagnostic framework extensions, you must include this file before + diagnostic-core.h, not after. The C front end formats are a subset of those + for C++, so they are the appropriate set to use in common code; + cp-tree.h overrides this for C++. */ +#if defined(GCC_DIAGNOSTIC_CORE_H) +#error \ +In order for the format checking to accept the C front end diagnostic \ +framework extensions, you must include this file before diagnostic-core.h \ +never after. +#endif +#ifndef GCC_DIAG_STYLE +#define GCC_DIAG_STYLE __gcc_cdiag__ +#endif +#include "diagnostic-core.h" + +/* Usage of TREE_LANG_FLAG_?: + 0: IDENTIFIER_MARKED (used by search routines). + C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C) + 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) + STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) + C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C) + 2: unused + 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) + 4: unused +*/ + +/* Reserved identifiers. This is the union of all the keywords for C, + C++, and Objective-C. All the type modifiers have to be in one + block at the beginning, because they are used as mask bits. There + are 28 type modifiers; if we add many more we will have to redesign + the mask mechanism. */ + +enum rid +{ + /* Modifiers: */ + /* C, in empirical order of frequency. */ + RID_STATIC = 0, + RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, + RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, + RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, + RID_NORETURN, + + /* C extensions */ + RID_COMPLEX, RID_THREAD, RID_SAT, + + /* C++ */ + RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, + + /* ObjC ("PQ" reserved words - they do not appear after a '@' and + are keywords only in specific contexts) */ + RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, + + /* ObjC ("PATTR" reserved words - they do not appear after a '@' + and are keywords only as property attributes) */ + RID_GETTER, RID_SETTER, + RID_READONLY, RID_READWRITE, + RID_ASSIGN, RID_RETAIN, RID_COPY, + RID_NONATOMIC, + + /* C (reserved and imaginary types not implemented, so any use is a + syntax error) */ + RID_IMAGINARY, + + /* C */ + RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, + RID_INT128, + RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, + RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, + RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, + RID_SIZEOF, + + /* C extensions */ + RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, + RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, + RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, + RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, + RID_FRACT, RID_ACCUM, + + /* C11 */ + RID_ALIGNAS, + + /* This means to warn that this is a C++ keyword, and then treat it + as a normal identifier. */ + RID_CXX_COMPAT_WARN, + + /* GNU transactional memory extension */ + RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, + + /* Too many ways of getting the name of a function as a string */ + RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, + + /* C++ (some of these are keywords in Objective-C as well, but only + if they appear after a '@') */ + RID_BOOL, RID_WCHAR, RID_CLASS, + RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, + RID_TEMPLATE, RID_NULL, RID_CATCH, + RID_DELETE, RID_FALSE, RID_NAMESPACE, + RID_NEW, RID_OFFSETOF, RID_OPERATOR, + RID_THIS, RID_THROW, RID_TRUE, + RID_TRY, RID_TYPENAME, RID_TYPEID, + RID_USING, RID_CHAR16, RID_CHAR32, + + /* casts */ + RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, + + /* C++ extensions */ + RID_BASES, RID_DIRECT_BASES, + RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, + RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, + RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, + RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, + RID_IS_ABSTRACT, RID_IS_BASE_OF, + RID_IS_CLASS, RID_IS_CONVERTIBLE_TO, + RID_IS_EMPTY, RID_IS_ENUM, + RID_IS_FINAL, RID_IS_LITERAL_TYPE, + RID_IS_POD, RID_IS_POLYMORPHIC, + RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, + RID_IS_UNION, RID_UNDERLYING_TYPE, + + /* C++11 */ + RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, + + /* Objective-C ("AT" reserved words - they are only keywords when + they follow '@') */ + RID_AT_ENCODE, RID_AT_END, + RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, + RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, + RID_AT_PROTOCOL, RID_AT_SELECTOR, + RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, + RID_AT_FINALLY, RID_AT_SYNCHRONIZED, + RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, + RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, + RID_AT_INTERFACE, + RID_AT_IMPLEMENTATION, + + /* Named address support, mapping the keyword to a particular named address + number. Named address space 0 is reserved for the generic address. If + there are more than 254 named addresses, the addr_space_t type will need + to be grown from an unsigned char to unsigned short. */ + RID_ADDR_SPACE_0, /* generic address */ + RID_ADDR_SPACE_1, + RID_ADDR_SPACE_2, + RID_ADDR_SPACE_3, + RID_ADDR_SPACE_4, + RID_ADDR_SPACE_5, + RID_ADDR_SPACE_6, + RID_ADDR_SPACE_7, + RID_ADDR_SPACE_8, + RID_ADDR_SPACE_9, + RID_ADDR_SPACE_10, + RID_ADDR_SPACE_11, + RID_ADDR_SPACE_12, + RID_ADDR_SPACE_13, + RID_ADDR_SPACE_14, + RID_ADDR_SPACE_15, + + RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, + RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, + + RID_MAX, + + RID_FIRST_MODIFIER = RID_STATIC, + RID_LAST_MODIFIER = RID_ONEWAY, + + RID_FIRST_CXX0X = RID_CONSTEXPR, + RID_LAST_CXX0X = RID_STATIC_ASSERT, + RID_FIRST_AT = RID_AT_ENCODE, + RID_LAST_AT = RID_AT_IMPLEMENTATION, + RID_FIRST_PQ = RID_IN, + RID_LAST_PQ = RID_ONEWAY, + RID_FIRST_PATTR = RID_GETTER, + RID_LAST_PATTR = RID_NONATOMIC +}; + +#define OBJC_IS_AT_KEYWORD(rid) \ + ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ + (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) + +#define OBJC_IS_PQ_KEYWORD(rid) \ + ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ + (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) + +#define OBJC_IS_PATTR_KEYWORD(rid) \ + ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ + (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR) + +/* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as + 'class') which are shared in a subtle way between Objective-C and + C++. When the lexer is lexing in Objective-C/Objective-C++, if it + finds '@' followed by one of these identifiers (eg, '@class'), it + recognizes the whole as an Objective-C keyword. If the identifier + is found elsewhere, it follows the rules of the C/C++ language. + */ +#define OBJC_IS_CXX_KEYWORD(rid) \ + (rid == RID_CLASS \ + || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ + || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) + +/* The elements of `ridpointers' are identifier nodes for the reserved + type names and storage classes. It is indexed by a RID_... value. */ +extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; + +/* Standard named or nameless data types of the C compiler. */ + +enum c_tree_index +{ + CTI_CHAR16_TYPE, + CTI_CHAR32_TYPE, + CTI_WCHAR_TYPE, + CTI_UNDERLYING_WCHAR_TYPE, + CTI_WINT_TYPE, + CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ + CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ + CTI_INTMAX_TYPE, + CTI_UINTMAX_TYPE, + CTI_WIDEST_INT_LIT_TYPE, + CTI_WIDEST_UINT_LIT_TYPE, + + /* Types for <stdint.h>, that may not be defined on all + targets. */ + CTI_SIG_ATOMIC_TYPE, + CTI_INT8_TYPE, + CTI_INT16_TYPE, + CTI_INT32_TYPE, + CTI_INT64_TYPE, + CTI_UINT8_TYPE, + CTI_UINT16_TYPE, + CTI_UINT32_TYPE, + CTI_UINT64_TYPE, + CTI_INT_LEAST8_TYPE, + CTI_INT_LEAST16_TYPE, + CTI_INT_LEAST32_TYPE, + CTI_INT_LEAST64_TYPE, + CTI_UINT_LEAST8_TYPE, + CTI_UINT_LEAST16_TYPE, + CTI_UINT_LEAST32_TYPE, + CTI_UINT_LEAST64_TYPE, + CTI_INT_FAST8_TYPE, + CTI_INT_FAST16_TYPE, + CTI_INT_FAST32_TYPE, + CTI_INT_FAST64_TYPE, + CTI_UINT_FAST8_TYPE, + CTI_UINT_FAST16_TYPE, + CTI_UINT_FAST32_TYPE, + CTI_UINT_FAST64_TYPE, + CTI_INTPTR_TYPE, + CTI_UINTPTR_TYPE, + + CTI_CHAR_ARRAY_TYPE, + CTI_CHAR16_ARRAY_TYPE, + CTI_CHAR32_ARRAY_TYPE, + CTI_WCHAR_ARRAY_TYPE, + CTI_INT_ARRAY_TYPE, + CTI_STRING_TYPE, + CTI_CONST_STRING_TYPE, + + /* Type for boolean expressions (bool in C++, int in C). */ + CTI_TRUTHVALUE_TYPE, + CTI_TRUTHVALUE_TRUE, + CTI_TRUTHVALUE_FALSE, + + CTI_DEFAULT_FUNCTION_TYPE, + + /* These are not types, but we have to look them up all the time. */ + CTI_FUNCTION_NAME_DECL, + CTI_PRETTY_FUNCTION_NAME_DECL, + CTI_C99_FUNCTION_NAME_DECL, + CTI_SAVED_FUNCTION_NAME_DECLS, + + CTI_VOID_ZERO, + + CTI_NULL, + + CTI_MAX +}; + +#define C_CPP_HASHNODE(id) \ + (&(((struct c_common_identifier *) (id))->node)) +#define C_RID_CODE(id) \ + ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) +#define C_SET_RID_CODE(id, code) \ + (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) + +/* Identifier part common to the C front ends. Inherits from + tree_identifier, despite appearances. */ +struct GTY(()) c_common_identifier { + struct tree_common common; + struct cpp_hashnode node; +}; + +/* An entry in the reserved keyword table. */ + +struct c_common_resword +{ + const char *const word; + ENUM_BITFIELD(rid) const rid : 16; + const unsigned int disable : 16; +}; + +/* Extra cpp_ttype values for C++. */ + +/* A token type for keywords, as opposed to ordinary identifiers. */ +#define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) + +/* A token type for template-ids. If a template-id is processed while + parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; + the value of the CPP_TEMPLATE_ID is whatever was returned by + cp_parser_template_id. */ +#define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) + +/* A token type for nested-name-specifiers. If a + nested-name-specifier is processed while parsing tentatively, it is + replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the + CPP_NESTED_NAME_SPECIFIER is whatever was returned by + cp_parser_nested_name_specifier_opt. */ +#define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) + +/* A token type for pre-parsed C++0x decltype. */ +#define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) + +/* The number of token types, including C++-specific ones. */ +#define N_CP_TTYPES ((int) (CPP_DECLTYPE + 1)) + +/* Disable mask. Keywords are disabled if (reswords[i].disable & + mask) is _true_. Thus for keywords which are present in all + languages the disable field is zero. */ + +#define D_CONLY 0x001 /* C only (not in C++). */ +#define D_CXXONLY 0x002 /* C++ only (not in C). */ +#define D_C99 0x004 /* In C, C99 only. */ +#define D_CXX0X 0x008 /* In C++, C++0X only. */ +#define D_EXT 0x010 /* GCC extension. */ +#define D_EXT89 0x020 /* GCC extension incorporated in C99. */ +#define D_ASM 0x040 /* Disabled by -fno-asm. */ +#define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ +#define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ +#define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ + +/* The reserved keyword table. */ +extern const struct c_common_resword c_common_reswords[]; + +/* The number of items in the reserved keyword table. */ +extern const unsigned int num_c_common_reswords; + +#define char16_type_node c_global_trees[CTI_CHAR16_TYPE] +#define char32_type_node c_global_trees[CTI_CHAR32_TYPE] +#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] +#define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] +#define wint_type_node c_global_trees[CTI_WINT_TYPE] +#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] +#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] +#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] +#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] +#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] +#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] + +#define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] +#define int8_type_node c_global_trees[CTI_INT8_TYPE] +#define int16_type_node c_global_trees[CTI_INT16_TYPE] +#define int32_type_node c_global_trees[CTI_INT32_TYPE] +#define int64_type_node c_global_trees[CTI_INT64_TYPE] +#define uint8_type_node c_global_trees[CTI_UINT8_TYPE] +#define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE] +#define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] +#define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] +#define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] +#define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] +#define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] +#define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] +#define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] +#define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] +#define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] +#define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] +#define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] +#define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] +#define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] +#define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] +#define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] +#define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] +#define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] +#define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] +#define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] +#define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] + +#define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] +#define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] +#define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] + +#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] +#define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] +#define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] +#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] +#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] +#define string_type_node c_global_trees[CTI_STRING_TYPE] +#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] + +#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] + +#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] +#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] +#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] +#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] + +/* A node for `((void) 0)'. */ +#define void_zero_node c_global_trees[CTI_VOID_ZERO] + +/* The node for C++ `__null'. */ +#define null_node c_global_trees[CTI_NULL] + +extern GTY(()) tree c_global_trees[CTI_MAX]; + +/* In a RECORD_TYPE, a sorted array of the fields of the type, not a + tree for size reasons. */ +struct GTY((variable_size)) sorted_fields_type { + int len; + tree GTY((length ("%h.len"))) elts[1]; +}; + +/* Mark which labels are explicitly declared. + These may be shadowed, and may be referenced from nested functions. */ +#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) + +typedef enum c_language_kind +{ + clk_c = 0, /* C90, C94 or C99 */ + clk_objc = 1, /* clk_c with ObjC features. */ + clk_cxx = 2, /* ANSI/ISO C++ */ + clk_objcxx = 3 /* clk_cxx with ObjC features. */ +} +c_language_kind; + +/* To test for a specific language use c_language, defined by each + front end. For "ObjC features" or "not C++" use the macros. */ +extern c_language_kind c_language; + +#define c_dialect_cxx() ((c_language & clk_cxx) != 0) +#define c_dialect_objc() ((c_language & clk_objc) != 0) + +/* The various name of operator that appears in error messages. */ +typedef enum ref_operator { + /* NULL */ + RO_NULL, + /* array indexing */ + RO_ARRAY_INDEXING, + /* unary * */ + RO_UNARY_STAR, + /* -> */ + RO_ARROW, + /* implicit conversion */ + RO_IMPLICIT_CONVERSION, + /* ->* */ + RO_ARROW_STAR +} ref_operator; + +/* Information about a statement tree. */ + +struct GTY(()) stmt_tree_s { + /* A stack of statement lists being collected. */ + vec<tree, va_gc> *x_cur_stmt_list; + + /* In C++, Nonzero if we should treat statements as full + expressions. In particular, this variable is non-zero if at the + end of a statement we should destroy any temporaries created + during that statement. Similarly, if, at the end of a block, we + should destroy any local variables in this block. Normally, this + variable is nonzero, since those are the normal semantics of + C++. + + This flag has no effect in C. */ + int stmts_are_full_exprs_p; +}; + +typedef struct stmt_tree_s *stmt_tree; + +/* Global state pertinent to the current function. Some C dialects + extend this structure with additional fields. */ + +struct GTY(()) c_language_function { + /* While we are parsing the function, this contains information + about the statement-tree that we are building. */ + struct stmt_tree_s x_stmt_tree; + + /* Vector of locally defined typedefs, for + -Wunused-local-typedefs. */ + vec<tree, va_gc> *local_typedefs; +}; + +#define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list) + +/* When building a statement-tree, this is the current statement list + being collected. */ +#define cur_stmt_list (stmt_list_stack->last ()) + +#define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty()) + +/* Language-specific hooks. */ + +/* If non-NULL, this function is called after a precompile header file + is loaded. */ +extern void (*lang_post_pch_load) (void); + +extern void push_file_scope (void); +extern void pop_file_scope (void); +extern stmt_tree current_stmt_tree (void); +extern tree push_stmt_list (void); +extern tree pop_stmt_list (tree); +extern tree add_stmt (tree); +extern void push_cleanup (tree, tree, bool); +extern tree pushdecl_top_level (tree); +extern tree pushdecl (tree); +extern tree build_modify_expr (location_t, tree, tree, enum tree_code, + location_t, tree, tree); +extern tree build_indirect_ref (location_t, tree, ref_operator); + +extern int field_decl_cmp (const void *, const void *); +extern void resort_sorted_fields (void *, void *, gt_pointer_operator, + void *); +extern bool has_c_linkage (const_tree decl); + +/* Switches common to the C front ends. */ + +/* Nonzero means don't output line number information. */ + +extern char flag_no_line_commands; + +/* Nonzero causes -E output not to be done, but directives such as + #define that have side effects are still obeyed. */ + +extern char flag_no_output; + +/* Nonzero means dump macros in some fashion; contains the 'D', 'M', + 'N' or 'U' of the command line switch. */ + +extern char flag_dump_macros; + +/* Nonzero means pass #include lines through to the output. */ + +extern char flag_dump_includes; + +/* Nonzero means process PCH files while preprocessing. */ + +extern bool flag_pch_preprocess; + +/* The file name to which we should write a precompiled header, or + NULL if no header will be written in this compile. */ + +extern const char *pch_file; + +/* Nonzero if an ISO standard was selected. It rejects macros in the + user's namespace. */ + +extern int flag_iso; + +/* C/ObjC language option variables. */ + + +/* Nonzero means allow type mismatches in conditional expressions; + just make their values `void'. */ + +extern int flag_cond_mismatch; + +/* Nonzero means enable C89 Amendment 1 features. */ + +extern int flag_isoc94; + +/* Nonzero means use the ISO C99 (or C11) dialect of C. */ + +extern int flag_isoc99; + +/* Nonzero means use the ISO C11 dialect of C. */ + +extern int flag_isoc11; + +/* Nonzero means that we have builtin functions, and main is an int. */ + +extern int flag_hosted; + +/* ObjC language option variables. */ + + +/* Tells the compiler that this is a special run. Do not perform any + compiling, instead we are to test some platform dependent features + and output a C header file with appropriate definitions. */ + +extern int print_struct_values; + +/* Tells the compiler what is the constant string class for ObjC. */ + +extern const char *constant_string_class_name; + + +/* C++ language option variables. */ + + +/* Nonzero means generate separate instantiation control files and + juggle them at link time. */ + +extern int flag_use_repository; + +/* The supported C++ dialects. */ + +enum cxx_dialect { + /* C++98 with TC1 */ + cxx98, + cxx03 = cxx98, + /* C++11 */ + cxx0x, + cxx11 = cxx0x, + /* C++1y (C++17?) */ + cxx1y +}; + +/* The C++ dialect being used. C++98 is the default. */ +extern enum cxx_dialect cxx_dialect; + +/* Maximum template instantiation depth. This limit is rather + arbitrary, but it exists to limit the time it takes to notice + excessively recursive template instantiations. */ + +extern int max_tinst_depth; + +/* Nonzero means that we should not issue warnings about problems that + occur when the code is executed, because the code being processed + is not expected to be executed. This is set during parsing. This + is used for cases like sizeof() and "0 ? a : b". This is a count, + not a bool, because unexecuted expressions can nest. */ + +extern int c_inhibit_evaluation_warnings; + +/* Whether lexing has been completed, so subsequent preprocessor + errors should use the compiler's input_location. */ + +extern bool done_lexing; + +/* C types are partitioned into three subsets: object, function, and + incomplete types. */ +#define C_TYPE_OBJECT_P(type) \ + (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) + +#define C_TYPE_INCOMPLETE_P(type) \ + (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) + +#define C_TYPE_FUNCTION_P(type) \ + (TREE_CODE (type) == FUNCTION_TYPE) + +/* For convenience we define a single macro to identify the class of + object or incomplete types. */ +#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ + (!C_TYPE_FUNCTION_P (type)) + +struct visibility_flags +{ + unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ + unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ +}; + +/* Global visibility options. */ +extern struct visibility_flags visibility_options; + +/* Attribute table common to the C front ends. */ +extern const struct attribute_spec c_common_attribute_table[]; +extern const struct attribute_spec c_common_format_attribute_table[]; + +/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. + ID is the identifier to use, NAME is the string. + TYPE_DEP indicates whether it depends on type of the function or not + (i.e. __PRETTY_FUNCTION__). */ + +extern tree (*make_fname_decl) (location_t, tree, int); + +/* In c-decl.c and cp/tree.c. FIXME. */ +extern void c_register_addr_space (const char *str, addr_space_t as); + +/* In c-common.c. */ +extern bool in_late_binary_op; +extern const char *c_addr_space_name (addr_space_t as); +extern tree identifier_global_value (tree); +extern tree c_linkage_bindings (tree); +extern void record_builtin_type (enum rid, const char *, tree); +extern tree build_void_list_node (void); +extern void start_fname_decls (void); +extern void finish_fname_decls (void); +extern const char *fname_as_string (int); +extern tree fname_decl (location_t, unsigned, tree); + +extern int check_user_alignment (const_tree, bool); +extern void check_function_arguments (const_tree, int, tree *); +extern void check_function_arguments_recurse (void (*) + (void *, tree, + unsigned HOST_WIDE_INT), + void *, tree, + unsigned HOST_WIDE_INT); +extern bool check_builtin_function_arguments (tree, int, tree *); +extern void check_function_format (tree, int, tree *); +extern tree handle_format_attribute (tree *, tree, tree, int, bool *); +extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); +extern bool attribute_takes_identifier_p (const_tree); +extern bool c_common_handle_option (size_t, const char *, int, int, location_t, + const struct cl_option_handlers *); +extern bool default_handle_c_option (size_t, const char *, int); +extern tree c_common_type_for_mode (enum machine_mode, int); +extern tree c_common_type_for_size (unsigned int, int); +extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, + int, int); +extern tree c_common_unsigned_type (tree); +extern tree c_common_signed_type (tree); +extern tree c_common_signed_or_unsigned_type (int, tree); +extern void c_common_init_ts (void); +extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); +extern bool unsafe_conversion_p (tree, tree, bool); +extern bool decl_with_nonnull_addr_p (const_tree); +extern tree c_fully_fold (tree, bool, bool *); +extern tree decl_constant_value_for_optimization (tree); +extern tree c_wrap_maybe_const (tree, bool); +extern tree c_save_expr (tree); +extern tree c_common_truthvalue_conversion (location_t, tree); +extern void c_apply_type_quals_to_decl (int, tree); +extern tree c_sizeof_or_alignof_type (location_t, tree, bool, int); +extern tree c_alignof_expr (location_t, tree); +/* Print an error message for invalid operands to arith operation CODE. + NOP_EXPR is used as a special case (see truthvalue_conversion). */ +extern void binary_op_error (location_t, enum tree_code, tree, tree); +extern tree fix_string_type (tree); +extern void constant_expression_warning (tree); +extern void constant_expression_error (tree); +extern bool strict_aliasing_warning (tree, tree, tree); +extern void sizeof_pointer_memaccess_warning (location_t *, tree, + vec<tree, va_gc> *, tree *, + bool (*) (tree, tree)); +extern void warnings_for_convert_and_check (tree, tree, tree); +extern tree convert_and_check (tree, tree); +extern void overflow_warning (location_t, tree); +extern bool warn_if_unused_value (const_tree, location_t); +extern void warn_logical_operator (location_t, enum tree_code, tree, + enum tree_code, tree, enum tree_code, tree); +extern void check_main_parameter_types (tree decl); +extern bool c_determine_visibility (tree); +extern bool same_scalar_type_ignoring_signedness (tree, tree); +extern void mark_valid_location_for_stdc_pragma (bool); +extern bool valid_location_for_stdc_pragma_p (void); +extern void set_float_const_decimal64 (void); +extern void clear_float_const_decimal64 (void); +extern bool float_const_decimal64_p (void); + +extern bool keyword_begins_type_specifier (enum rid); +extern bool keyword_is_storage_class_specifier (enum rid); +extern bool keyword_is_type_qualifier (enum rid); +extern bool keyword_is_decl_specifier (enum rid); +extern bool cxx_fundamental_alignment_p (unsigned); + +#define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, 1) +#define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1) + +/* Subroutine of build_binary_op, used for certain operations. */ +extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); + +/* Subroutine of build_binary_op, used for comparison operations. + See if the operands have both been converted from subword integer types + and, if so, perhaps change them both back to their original type. */ +extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); + +extern tree pointer_int_sum (location_t, enum tree_code, tree, tree); + +/* Add qualifiers to a type, in the fashion for C. */ +extern tree c_build_qualified_type (tree, int); + +/* Build tree nodes and builtin functions common to both C and C++ language + frontends. */ +extern void c_common_nodes_and_builtins (void); + +extern void disable_builtin_function (const char *); + +extern void set_compound_literal_name (tree decl); + +extern tree build_va_arg (location_t, tree, tree); + +extern const unsigned int c_family_lang_mask; +extern unsigned int c_common_option_lang_mask (void); +extern void c_common_initialize_diagnostics (diagnostic_context *); +extern bool c_common_complain_wrong_lang_p (const struct cl_option *); +extern void c_common_init_options_struct (struct gcc_options *); +extern void c_common_init_options (unsigned int, struct cl_decoded_option *); +extern bool c_common_post_options (const char **); +extern bool c_common_init (void); +extern void c_common_finish (void); +extern void c_common_parse_file (void); +extern alias_set_type c_common_get_alias_set (tree); +extern void c_register_builtin_type (tree, const char*); +extern bool c_promoting_integer_type_p (const_tree); +extern int self_promoting_args_p (const_tree); +extern tree strip_pointer_operator (tree); +extern tree strip_pointer_or_array_types (tree); +extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); + +/* This is the basic parsing function. */ +extern void c_parse_file (void); + +extern void warn_for_omitted_condop (location_t, tree); + +/* These macros provide convenient access to the various _STMT nodes. */ + +/* Nonzero if a given STATEMENT_LIST represents the outermost binding + if a statement expression. */ +#define STATEMENT_LIST_STMT_EXPR(NODE) \ + TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) + +/* Nonzero if a label has been added to the statement list. */ +#define STATEMENT_LIST_HAS_LABEL(NODE) \ + TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) + +/* C_MAYBE_CONST_EXPR accessors. */ +#define C_MAYBE_CONST_EXPR_PRE(NODE) \ + TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) +#define C_MAYBE_CONST_EXPR_EXPR(NODE) \ + TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) +#define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ + TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) +#define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ + TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) +#define EXPR_INT_CONST_OPERANDS(EXPR) \ + (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ + && (TREE_CODE (EXPR) == INTEGER_CST \ + || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ + && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) + +/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ +#define DECL_C_BIT_FIELD(NODE) \ + (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) +#define SET_DECL_C_BIT_FIELD(NODE) \ + (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) +#define CLEAR_DECL_C_BIT_FIELD(NODE) \ + (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) + +extern tree do_case (location_t, tree, tree); +extern tree build_stmt (location_t, enum tree_code, ...); +extern tree build_real_imag_expr (location_t, enum tree_code, tree); + +/* These functions must be defined by each front-end which implements + a variant of the C language. They are used in c-common.c. */ + +extern tree build_unary_op (location_t, enum tree_code, tree, int); +extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); +extern tree perform_integral_promotions (tree); + +/* These functions must be defined by each front-end which implements + a variant of the C language. They are used by port files. */ + +extern tree default_conversion (tree); + +/* Given two integer or real types, return the type for their sum. + Given two compatible ANSI C types, returns the merged type. */ + +extern tree common_type (tree, tree); + +extern tree decl_constant_value (tree); + +/* Handle increment and decrement of boolean types. */ +extern tree boolean_increment (enum tree_code, tree); + +extern int case_compare (splay_tree_key, splay_tree_key); + +extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree); + +extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); + +extern tree build_function_call (location_t, tree, tree); + +extern tree build_function_call_vec (location_t, tree, vec<tree, va_gc> *, + vec<tree, va_gc> *); + +extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *); + +extern tree finish_label_address_expr (tree, location_t); + +/* Same function prototype, but the C and C++ front ends have + different implementations. Used in c-common.c. */ +extern tree lookup_label (tree); +extern tree lookup_name (tree); +extern bool lvalue_p (const_tree); + +extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); +extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); +extern tree c_build_vec_perm_expr (location_t, tree, tree, tree); + +extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); + +extern void init_c_lex (void); + +extern void c_cpp_builtins (cpp_reader *); +extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); +extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int, + const char *, va_list *) + ATTRIBUTE_GCC_DIAG(6,0); + +extern bool parse_optimize_options (tree, bool); + +/* Positive if an implicit `extern "C"' scope has just been entered; + negative if such a scope has just been exited. */ +extern GTY(()) int pending_lang_change; + +/* Information recorded about each file examined during compilation. */ + +struct c_fileinfo +{ + int time; /* Time spent in the file. */ + + /* Flags used only by C++. + INTERFACE_ONLY nonzero means that we are in an "interface" section + of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust + the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and + INTERFACE_ONLY is zero, it means that we are responsible for + exporting definitions that others might need. */ + short interface_only; + short interface_unknown; +}; + +struct c_fileinfo *get_fileinfo (const char *); +extern void dump_time_statistics (void); + +extern bool c_dump_tree (void *, tree); + +extern void verify_sequence_points (tree); + +extern tree fold_offsetof_1 (tree); +extern tree fold_offsetof (tree); + +/* Places where an lvalue, or modifiable lvalue, may be required. + Used to select diagnostic messages in lvalue_error and + readonly_error. */ +enum lvalue_use { + lv_assign, + lv_increment, + lv_decrement, + lv_addressof, + lv_asm +}; + +extern void readonly_error (tree, enum lvalue_use); +extern void lvalue_error (location_t, enum lvalue_use); +extern void invalid_indirection_error (location_t, tree, ref_operator); + +extern int complete_array_type (tree *, tree, bool); + +extern tree builtin_type_for_size (int, bool); + +extern void c_common_mark_addressable_vec (tree); + +extern void warn_array_subscript_with_type_char (tree); +extern void warn_about_parentheses (location_t, + enum tree_code, + enum tree_code, tree, + enum tree_code, tree); +extern void warn_for_unused_label (tree label); +extern void warn_for_div_by_zero (location_t, tree divisor); +extern void warn_for_sign_compare (location_t, + tree orig_op0, tree orig_op1, + tree op0, tree op1, + tree result_type, + enum tree_code resultcode); +extern void do_warn_double_promotion (tree, tree, tree, const char *, + location_t); +extern void set_underlying_type (tree); +extern void record_locally_defined_typedef (tree); +extern void maybe_record_typedef_use (tree); +extern void maybe_warn_unused_local_typedefs (void); +extern vec<tree, va_gc> *make_tree_vector (void); +extern void release_tree_vector (vec<tree, va_gc> *); +extern vec<tree, va_gc> *make_tree_vector_single (tree); +extern vec<tree, va_gc> *make_tree_vector_from_list (tree); +extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *); + +/* In c-gimplify.c */ +extern void c_genericize (tree); +extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); +extern tree c_build_bind_expr (location_t, tree, tree); + +/* In c-pch.c */ +extern void pch_init (void); +extern void pch_cpp_save_state (void); +extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); +extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, + const char *orig); +extern void c_common_write_pch (void); +extern void c_common_no_more_pch (void); +extern void c_common_pch_pragma (cpp_reader *pfile, const char *); + +/* In *-checksum.c */ +extern const unsigned char executable_checksum[16]; + +/* In c-cppbuiltin.c */ +extern void builtin_define_std (const char *macro); +extern void builtin_define_with_value (const char *, const char *, int); +extern void c_stddef_cpp_builtins (void); +extern void fe_file_change (const struct line_map *); +extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char); + +/* In c-ppoutput.c */ +extern void init_pp_output (FILE *); +extern void preprocess_file (cpp_reader *); +extern void pp_file_change (const struct line_map *); +extern void pp_dir_change (cpp_reader *, const char *); +extern bool check_missing_format_attribute (tree, tree); + +/* In c-omp.c */ +extern tree c_finish_omp_master (location_t, tree); +extern tree c_finish_omp_critical (location_t, tree, tree); +extern tree c_finish_omp_ordered (location_t, tree); +extern void c_finish_omp_barrier (location_t); +extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, + tree, tree, tree, tree, tree); +extern void c_finish_omp_flush (location_t); +extern void c_finish_omp_taskwait (location_t); +extern void c_finish_omp_taskyield (location_t); +extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree); +extern void c_split_parallel_clauses (location_t, tree, tree *, tree *); +extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); + +/* Not in c-omp.c; provided by the front end. */ +extern bool c_omp_sharing_predetermined (tree); +extern tree c_omp_remap_decl (tree, bool); +extern void record_types_used_by_current_var_decl (tree); + +/* Return next tree in the chain for chain_next walking of tree nodes. */ +static inline tree +c_tree_chain_next (tree t) +{ + /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different + kind of object, never a long chain of nodes. Prefer + TYPE_NEXT_VARIANT for types. */ + if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) + return TYPE_NEXT_VARIANT (t); + /* Otherwise, if there is TREE_CHAIN, return it. */ + if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) + return TREE_CHAIN (t); + return NULL; +} + +/* Mask used by tm_stmt_attr. */ +#define TM_STMT_ATTR_OUTER 2 +#define TM_STMT_ATTR_ATOMIC 4 +#define TM_STMT_ATTR_RELAXED 8 + +extern int parse_tm_stmt_attr (tree, int); + +/* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these + are ordered specifically such that more restrictive attributes are + at lower bit positions. This fact is known by the C++ tm attribute + inheritance code such that least bit extraction (mask & -mask) results + in the most restrictive attribute. */ +#define TM_ATTR_SAFE 1 +#define TM_ATTR_CALLABLE 2 +#define TM_ATTR_PURE 4 +#define TM_ATTR_IRREVOCABLE 8 +#define TM_ATTR_MAY_CANCEL_OUTER 16 + +extern int tm_attr_to_mask (tree); +extern tree tm_mask_to_attr (int); +extern tree find_tm_attribute (tree); + +/* A suffix-identifier value doublet that represents user-defined literals + for C++-0x. */ +enum overflow_type { + OT_UNDERFLOW = -1, + OT_NONE, + OT_OVERFLOW +}; + +struct GTY(()) tree_userdef_literal { + struct tree_base base; + tree suffix_id; + tree value; + tree num_string; + enum overflow_type overflow; +}; + +#define USERDEF_LITERAL_SUFFIX_ID(NODE) \ + (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id) + +#define USERDEF_LITERAL_VALUE(NODE) \ + (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value) + +#define USERDEF_LITERAL_OVERFLOW(NODE) \ + (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow) + +#define USERDEF_LITERAL_NUM_STRING(NODE) \ + (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) + +#define USERDEF_LITERAL_TYPE(NODE) \ + (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) + +extern tree build_userdef_literal (tree suffix_id, tree value, + enum overflow_type overflow, + tree num_string); + +extern void convert_vector_to_pointer_for_subscript (location_t, tree*, tree); + +/* Possibe cases of scalar_to_vector conversion. */ +enum stv_conv { + stv_error, /* Error occured. */ + stv_nothing, /* Nothing happened. */ + stv_firstarg, /* First argument must be expanded. */ + stv_secondarg /* Second argument must be expanded. */ +}; + +extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code, + tree op0, tree op1, bool); + +#endif /* ! GCC_C_COMMON_H */ |