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Diffstat (limited to 'gcc-4.2.1-5666.3/libiberty/cplus-dem.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/libiberty/cplus-dem.c | 4717 |
1 files changed, 4717 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/libiberty/cplus-dem.c b/gcc-4.2.1-5666.3/libiberty/cplus-dem.c new file mode 100644 index 000000000..1f8b1fc31 --- /dev/null +++ b/gcc-4.2.1-5666.3/libiberty/cplus-dem.c @@ -0,0 +1,4717 @@ +/* Demangler for GNU C++ + Copyright 1989, 1991, 1994, 1995, 1996, 1997, 1998, 1999, + 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + Written by James Clark (jjc@jclark.uucp) + Rewritten by Fred Fish (fnf@cygnus.com) for ARM and Lucid demangling + Modified by Satish Pai (pai@apollo.hp.com) for HP demangling + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +In addition to the permissions in the GNU Library General Public +License, the Free Software Foundation gives you unlimited permission +to link the compiled version of this file into combinations with other +programs, and to distribute those combinations without any restriction +coming from the use of this file. (The Library Public License +restrictions do apply in other respects; for example, they cover +modification of the file, and distribution when not linked into a +combined executable.) + +Libiberty 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, +Boston, MA 02110-1301, USA. */ + +/* This file exports two functions; cplus_mangle_opname and cplus_demangle. + + This file imports xmalloc and xrealloc, which are like malloc and + realloc except that they generate a fatal error if there is no + available memory. */ + +/* This file lives in both GCC and libiberty. When making changes, please + try not to break either. */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "safe-ctype.h" + +#include <sys/types.h> +#include <string.h> +#include <stdio.h> + +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#else +char * malloc (); +char * realloc (); +#endif + +#include <demangle.h> +#undef CURRENT_DEMANGLING_STYLE +#define CURRENT_DEMANGLING_STYLE work->options + +#include "libiberty.h" + +static char *ada_demangle (const char *, int); + +#define min(X,Y) (((X) < (Y)) ? (X) : (Y)) + +/* A value at least one greater than the maximum number of characters + that will be output when using the `%d' format with `printf'. */ +#define INTBUF_SIZE 32 + +extern void fancy_abort (void) ATTRIBUTE_NORETURN; + +/* In order to allow a single demangler executable to demangle strings + using various common values of CPLUS_MARKER, as well as any specific + one set at compile time, we maintain a string containing all the + commonly used ones, and check to see if the marker we are looking for + is in that string. CPLUS_MARKER is usually '$' on systems where the + assembler can deal with that. Where the assembler can't, it's usually + '.' (but on many systems '.' is used for other things). We put the + current defined CPLUS_MARKER first (which defaults to '$'), followed + by the next most common value, followed by an explicit '$' in case + the value of CPLUS_MARKER is not '$'. + + We could avoid this if we could just get g++ to tell us what the actual + cplus marker character is as part of the debug information, perhaps by + ensuring that it is the character that terminates the gcc<n>_compiled + marker symbol (FIXME). */ + +#if !defined (CPLUS_MARKER) +#define CPLUS_MARKER '$' +#endif + +enum demangling_styles current_demangling_style = auto_demangling; + +static char cplus_markers[] = { CPLUS_MARKER, '.', '$', '\0' }; + +static char char_str[2] = { '\000', '\000' }; + +void +set_cplus_marker_for_demangling (int ch) +{ + cplus_markers[0] = ch; +} + +typedef struct string /* Beware: these aren't required to be */ +{ /* '\0' terminated. */ + char *b; /* pointer to start of string */ + char *p; /* pointer after last character */ + char *e; /* pointer after end of allocated space */ +} string; + +/* Stuff that is shared between sub-routines. + Using a shared structure allows cplus_demangle to be reentrant. */ + +struct work_stuff +{ + int options; + char **typevec; + char **ktypevec; + char **btypevec; + int numk; + int numb; + int ksize; + int bsize; + int ntypes; + int typevec_size; + int constructor; + int destructor; + int static_type; /* A static member function */ + int temp_start; /* index in demangled to start of template args */ + int type_quals; /* The type qualifiers. */ + int dllimported; /* Symbol imported from a PE DLL */ + char **tmpl_argvec; /* Template function arguments. */ + int ntmpl_args; /* The number of template function arguments. */ + int forgetting_types; /* Nonzero if we are not remembering the types + we see. */ + string* previous_argument; /* The last function argument demangled. */ + int nrepeats; /* The number of times to repeat the previous + argument. */ +}; + +#define PRINT_ANSI_QUALIFIERS (work -> options & DMGL_ANSI) +#define PRINT_ARG_TYPES (work -> options & DMGL_PARAMS) + +static const struct optable +{ + const char *const in; + const char *const out; + const int flags; +} optable[] = { + {"nw", " new", DMGL_ANSI}, /* new (1.92, ansi) */ + {"dl", " delete", DMGL_ANSI}, /* new (1.92, ansi) */ + {"new", " new", 0}, /* old (1.91, and 1.x) */ + {"delete", " delete", 0}, /* old (1.91, and 1.x) */ + {"vn", " new []", DMGL_ANSI}, /* GNU, pending ansi */ + {"vd", " delete []", DMGL_ANSI}, /* GNU, pending ansi */ + {"as", "=", DMGL_ANSI}, /* ansi */ + {"ne", "!=", DMGL_ANSI}, /* old, ansi */ + {"eq", "==", DMGL_ANSI}, /* old, ansi */ + {"ge", ">=", DMGL_ANSI}, /* old, ansi */ + {"gt", ">", DMGL_ANSI}, /* old, ansi */ + {"le", "<=", DMGL_ANSI}, /* old, ansi */ + {"lt", "<", DMGL_ANSI}, /* old, ansi */ + {"plus", "+", 0}, /* old */ + {"pl", "+", DMGL_ANSI}, /* ansi */ + {"apl", "+=", DMGL_ANSI}, /* ansi */ + {"minus", "-", 0}, /* old */ + {"mi", "-", DMGL_ANSI}, /* ansi */ + {"ami", "-=", DMGL_ANSI}, /* ansi */ + {"mult", "*", 0}, /* old */ + {"ml", "*", DMGL_ANSI}, /* ansi */ + {"amu", "*=", DMGL_ANSI}, /* ansi (ARM/Lucid) */ + {"aml", "*=", DMGL_ANSI}, /* ansi (GNU/g++) */ + {"convert", "+", 0}, /* old (unary +) */ + {"negate", "-", 0}, /* old (unary -) */ + {"trunc_mod", "%", 0}, /* old */ + {"md", "%", DMGL_ANSI}, /* ansi */ + {"amd", "%=", DMGL_ANSI}, /* ansi */ + {"trunc_div", "/", 0}, /* old */ + {"dv", "/", DMGL_ANSI}, /* ansi */ + {"adv", "/=", DMGL_ANSI}, /* ansi */ + {"truth_andif", "&&", 0}, /* old */ + {"aa", "&&", DMGL_ANSI}, /* ansi */ + {"truth_orif", "||", 0}, /* old */ + {"oo", "||", DMGL_ANSI}, /* ansi */ + {"truth_not", "!", 0}, /* old */ + {"nt", "!", DMGL_ANSI}, /* ansi */ + {"postincrement","++", 0}, /* old */ + {"pp", "++", DMGL_ANSI}, /* ansi */ + {"postdecrement","--", 0}, /* old */ + {"mm", "--", DMGL_ANSI}, /* ansi */ + {"bit_ior", "|", 0}, /* old */ + {"or", "|", DMGL_ANSI}, /* ansi */ + {"aor", "|=", DMGL_ANSI}, /* ansi */ + {"bit_xor", "^", 0}, /* old */ + {"er", "^", DMGL_ANSI}, /* ansi */ + {"aer", "^=", DMGL_ANSI}, /* ansi */ + {"bit_and", "&", 0}, /* old */ + {"ad", "&", DMGL_ANSI}, /* ansi */ + {"aad", "&=", DMGL_ANSI}, /* ansi */ + {"bit_not", "~", 0}, /* old */ + {"co", "~", DMGL_ANSI}, /* ansi */ + {"call", "()", 0}, /* old */ + {"cl", "()", DMGL_ANSI}, /* ansi */ + {"alshift", "<<", 0}, /* old */ + {"ls", "<<", DMGL_ANSI}, /* ansi */ + {"als", "<<=", DMGL_ANSI}, /* ansi */ + {"arshift", ">>", 0}, /* old */ + {"rs", ">>", DMGL_ANSI}, /* ansi */ + {"ars", ">>=", DMGL_ANSI}, /* ansi */ + {"component", "->", 0}, /* old */ + {"pt", "->", DMGL_ANSI}, /* ansi; Lucid C++ form */ + {"rf", "->", DMGL_ANSI}, /* ansi; ARM/GNU form */ + {"indirect", "*", 0}, /* old */ + {"method_call", "->()", 0}, /* old */ + {"addr", "&", 0}, /* old (unary &) */ + {"array", "[]", 0}, /* old */ + {"vc", "[]", DMGL_ANSI}, /* ansi */ + {"compound", ", ", 0}, /* old */ + {"cm", ", ", DMGL_ANSI}, /* ansi */ + {"cond", "?:", 0}, /* old */ + {"cn", "?:", DMGL_ANSI}, /* pseudo-ansi */ + {"max", ">?", 0}, /* old */ + {"mx", ">?", DMGL_ANSI}, /* pseudo-ansi */ + {"min", "<?", 0}, /* old */ + {"mn", "<?", DMGL_ANSI}, /* pseudo-ansi */ + {"nop", "", 0}, /* old (for operator=) */ + {"rm", "->*", DMGL_ANSI}, /* ansi */ + {"sz", "sizeof ", DMGL_ANSI} /* pseudo-ansi */ +}; + +/* These values are used to indicate the various type varieties. + They are all non-zero so that they can be used as `success' + values. */ +typedef enum type_kind_t +{ + tk_none, + tk_pointer, + tk_reference, + tk_integral, + tk_bool, + tk_char, + tk_real +} type_kind_t; + +const struct demangler_engine libiberty_demanglers[] = +{ + { + NO_DEMANGLING_STYLE_STRING, + no_demangling, + "Demangling disabled" + } + , + { + AUTO_DEMANGLING_STYLE_STRING, + auto_demangling, + "Automatic selection based on executable" + } + , + { + GNU_DEMANGLING_STYLE_STRING, + gnu_demangling, + "GNU (g++) style demangling" + } + , + { + LUCID_DEMANGLING_STYLE_STRING, + lucid_demangling, + "Lucid (lcc) style demangling" + } + , + { + ARM_DEMANGLING_STYLE_STRING, + arm_demangling, + "ARM style demangling" + } + , + { + HP_DEMANGLING_STYLE_STRING, + hp_demangling, + "HP (aCC) style demangling" + } + , + { + EDG_DEMANGLING_STYLE_STRING, + edg_demangling, + "EDG style demangling" + } + , + { + GNU_V3_DEMANGLING_STYLE_STRING, + gnu_v3_demangling, + "GNU (g++) V3 ABI-style demangling" + } + , + { + JAVA_DEMANGLING_STYLE_STRING, + java_demangling, + "Java style demangling" + } + , + { + GNAT_DEMANGLING_STYLE_STRING, + gnat_demangling, + "GNAT style demangling" + } + , + { + NULL, unknown_demangling, NULL + } +}; + +#define STRING_EMPTY(str) ((str) -> b == (str) -> p) +#define APPEND_BLANK(str) {if (!STRING_EMPTY(str)) \ + string_append(str, " ");} +#define LEN_STRING(str) ( (STRING_EMPTY(str))?0:((str)->p - (str)->b)) + +/* The scope separator appropriate for the language being demangled. */ + +#define SCOPE_STRING(work) ((work->options & DMGL_JAVA) ? "." : "::") + +#define ARM_VTABLE_STRING "__vtbl__" /* Lucid/ARM virtual table prefix */ +#define ARM_VTABLE_STRLEN 8 /* strlen (ARM_VTABLE_STRING) */ + +/* Prototypes for local functions */ + +static void delete_work_stuff (struct work_stuff *); + +static void delete_non_B_K_work_stuff (struct work_stuff *); + +static char *mop_up (struct work_stuff *, string *, int); + +static void squangle_mop_up (struct work_stuff *); + +static void work_stuff_copy_to_from (struct work_stuff *, struct work_stuff *); + +#if 0 +static int +demangle_method_args (struct work_stuff *, const char **, string *); +#endif + +static char * +internal_cplus_demangle (struct work_stuff *, const char *); + +static int +demangle_template_template_parm (struct work_stuff *work, + const char **, string *); + +static int +demangle_template (struct work_stuff *work, const char **, string *, + string *, int, int); + +static int +arm_pt (struct work_stuff *, const char *, int, const char **, + const char **); + +static int +demangle_class_name (struct work_stuff *, const char **, string *); + +static int +demangle_qualified (struct work_stuff *, const char **, string *, + int, int); + +static int demangle_class (struct work_stuff *, const char **, string *); + +static int demangle_fund_type (struct work_stuff *, const char **, string *); + +static int demangle_signature (struct work_stuff *, const char **, string *); + +static int demangle_prefix (struct work_stuff *, const char **, string *); + +static int gnu_special (struct work_stuff *, const char **, string *); + +static int arm_special (const char **, string *); + +static void string_need (string *, int); + +static void string_delete (string *); + +static void +string_init (string *); + +static void string_clear (string *); + +#if 0 +static int string_empty (string *); +#endif + +static void string_append (string *, const char *); + +static void string_appends (string *, string *); + +static void string_appendn (string *, const char *, int); + +static void string_prepend (string *, const char *); + +static void string_prependn (string *, const char *, int); + +static void string_append_template_idx (string *, int); + +static int get_count (const char **, int *); + +static int consume_count (const char **); + +static int consume_count_with_underscores (const char**); + +static int demangle_args (struct work_stuff *, const char **, string *); + +static int demangle_nested_args (struct work_stuff*, const char**, string*); + +static int do_type (struct work_stuff *, const char **, string *); + +static int do_arg (struct work_stuff *, const char **, string *); + +static void +demangle_function_name (struct work_stuff *, const char **, string *, + const char *); + +static int +iterate_demangle_function (struct work_stuff *, + const char **, string *, const char *); + +static void remember_type (struct work_stuff *, const char *, int); + +static void remember_Btype (struct work_stuff *, const char *, int, int); + +static int register_Btype (struct work_stuff *); + +static void remember_Ktype (struct work_stuff *, const char *, int); + +static void forget_types (struct work_stuff *); + +static void forget_B_and_K_types (struct work_stuff *); + +static void string_prepends (string *, string *); + +static int +demangle_template_value_parm (struct work_stuff*, const char**, + string*, type_kind_t); + +static int +do_hpacc_template_const_value (struct work_stuff *, const char **, string *); + +static int +do_hpacc_template_literal (struct work_stuff *, const char **, string *); + +static int snarf_numeric_literal (const char **, string *); + +/* There is a TYPE_QUAL value for each type qualifier. They can be + combined by bitwise-or to form the complete set of qualifiers for a + type. */ + +#define TYPE_UNQUALIFIED 0x0 +#define TYPE_QUAL_CONST 0x1 +#define TYPE_QUAL_VOLATILE 0x2 +#define TYPE_QUAL_RESTRICT 0x4 + +static int code_for_qualifier (int); + +static const char* qualifier_string (int); + +static const char* demangle_qualifier (int); + +static int demangle_expression (struct work_stuff *, const char **, string *, + type_kind_t); + +static int +demangle_integral_value (struct work_stuff *, const char **, string *); + +static int +demangle_real_value (struct work_stuff *, const char **, string *); + +static void +demangle_arm_hp_template (struct work_stuff *, const char **, int, string *); + +static void +recursively_demangle (struct work_stuff *, const char **, string *, int); + +static void grow_vect (char **, size_t *, size_t, int); + +/* Translate count to integer, consuming tokens in the process. + Conversion terminates on the first non-digit character. + + Trying to consume something that isn't a count results in no + consumption of input and a return of -1. + + Overflow consumes the rest of the digits, and returns -1. */ + +static int +consume_count (const char **type) +{ + int count = 0; + + if (! ISDIGIT ((unsigned char)**type)) + return -1; + + while (ISDIGIT ((unsigned char)**type)) + { + count *= 10; + + /* Check for overflow. + We assume that count is represented using two's-complement; + no power of two is divisible by ten, so if an overflow occurs + when multiplying by ten, the result will not be a multiple of + ten. */ + if ((count % 10) != 0) + { + while (ISDIGIT ((unsigned char) **type)) + (*type)++; + return -1; + } + + count += **type - '0'; + (*type)++; + } + + if (count < 0) + count = -1; + + return (count); +} + + +/* Like consume_count, but for counts that are preceded and followed + by '_' if they are greater than 10. Also, -1 is returned for + failure, since 0 can be a valid value. */ + +static int +consume_count_with_underscores (const char **mangled) +{ + int idx; + + if (**mangled == '_') + { + (*mangled)++; + if (!ISDIGIT ((unsigned char)**mangled)) + return -1; + + idx = consume_count (mangled); + if (**mangled != '_') + /* The trailing underscore was missing. */ + return -1; + + (*mangled)++; + } + else + { + if (**mangled < '0' || **mangled > '9') + return -1; + + idx = **mangled - '0'; + (*mangled)++; + } + + return idx; +} + +/* C is the code for a type-qualifier. Return the TYPE_QUAL + corresponding to this qualifier. */ + +static int +code_for_qualifier (int c) +{ + switch (c) + { + case 'C': + return TYPE_QUAL_CONST; + + case 'V': + return TYPE_QUAL_VOLATILE; + + case 'u': + return TYPE_QUAL_RESTRICT; + + default: + break; + } + + /* C was an invalid qualifier. */ + abort (); +} + +/* Return the string corresponding to the qualifiers given by + TYPE_QUALS. */ + +static const char* +qualifier_string (int type_quals) +{ + switch (type_quals) + { + case TYPE_UNQUALIFIED: + return ""; + + case TYPE_QUAL_CONST: + return "const"; + + case TYPE_QUAL_VOLATILE: + return "volatile"; + + case TYPE_QUAL_RESTRICT: + return "__restrict"; + + case TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE: + return "const volatile"; + + case TYPE_QUAL_CONST | TYPE_QUAL_RESTRICT: + return "const __restrict"; + + case TYPE_QUAL_VOLATILE | TYPE_QUAL_RESTRICT: + return "volatile __restrict"; + + case TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE | TYPE_QUAL_RESTRICT: + return "const volatile __restrict"; + + default: + break; + } + + /* TYPE_QUALS was an invalid qualifier set. */ + abort (); +} + +/* C is the code for a type-qualifier. Return the string + corresponding to this qualifier. This function should only be + called with a valid qualifier code. */ + +static const char* +demangle_qualifier (int c) +{ + return qualifier_string (code_for_qualifier (c)); +} + +int +cplus_demangle_opname (const char *opname, char *result, int options) +{ + int len, len1, ret; + string type; + struct work_stuff work[1]; + const char *tem; + + len = strlen(opname); + result[0] = '\0'; + ret = 0; + memset ((char *) work, 0, sizeof (work)); + work->options = options; + + if (opname[0] == '_' && opname[1] == '_' + && opname[2] == 'o' && opname[3] == 'p') + { + /* ANSI. */ + /* type conversion operator. */ + tem = opname + 4; + if (do_type (work, &tem, &type)) + { + strcat (result, "operator "); + strncat (result, type.b, type.p - type.b); + string_delete (&type); + ret = 1; + } + } + else if (opname[0] == '_' && opname[1] == '_' + && ISLOWER((unsigned char)opname[2]) + && ISLOWER((unsigned char)opname[3])) + { + if (opname[4] == '\0') + { + /* Operator. */ + size_t i; + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + if (strlen (optable[i].in) == 2 + && memcmp (optable[i].in, opname + 2, 2) == 0) + { + strcat (result, "operator"); + strcat (result, optable[i].out); + ret = 1; + break; + } + } + } + else + { + if (opname[2] == 'a' && opname[5] == '\0') + { + /* Assignment. */ + size_t i; + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + if (strlen (optable[i].in) == 3 + && memcmp (optable[i].in, opname + 2, 3) == 0) + { + strcat (result, "operator"); + strcat (result, optable[i].out); + ret = 1; + break; + } + } + } + } + } + else if (len >= 3 + && opname[0] == 'o' + && opname[1] == 'p' + && strchr (cplus_markers, opname[2]) != NULL) + { + /* see if it's an assignment expression */ + if (len >= 10 /* op$assign_ */ + && memcmp (opname + 3, "assign_", 7) == 0) + { + size_t i; + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + len1 = len - 10; + if ((int) strlen (optable[i].in) == len1 + && memcmp (optable[i].in, opname + 10, len1) == 0) + { + strcat (result, "operator"); + strcat (result, optable[i].out); + strcat (result, "="); + ret = 1; + break; + } + } + } + else + { + size_t i; + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + len1 = len - 3; + if ((int) strlen (optable[i].in) == len1 + && memcmp (optable[i].in, opname + 3, len1) == 0) + { + strcat (result, "operator"); + strcat (result, optable[i].out); + ret = 1; + break; + } + } + } + } + else if (len >= 5 && memcmp (opname, "type", 4) == 0 + && strchr (cplus_markers, opname[4]) != NULL) + { + /* type conversion operator */ + tem = opname + 5; + if (do_type (work, &tem, &type)) + { + strcat (result, "operator "); + strncat (result, type.b, type.p - type.b); + string_delete (&type); + ret = 1; + } + } + squangle_mop_up (work); + return ret; + +} + +/* Takes operator name as e.g. "++" and returns mangled + operator name (e.g. "postincrement_expr"), or NULL if not found. + + If OPTIONS & DMGL_ANSI == 1, return the ANSI name; + if OPTIONS & DMGL_ANSI == 0, return the old GNU name. */ + +const char * +cplus_mangle_opname (const char *opname, int options) +{ + size_t i; + int len; + + len = strlen (opname); + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + if ((int) strlen (optable[i].out) == len + && (options & DMGL_ANSI) == (optable[i].flags & DMGL_ANSI) + && memcmp (optable[i].out, opname, len) == 0) + return optable[i].in; + } + return (0); +} + +/* Add a routine to set the demangling style to be sure it is valid and + allow for any demangler initialization that maybe necessary. */ + +enum demangling_styles +cplus_demangle_set_style (enum demangling_styles style) +{ + const struct demangler_engine *demangler = libiberty_demanglers; + + for (; demangler->demangling_style != unknown_demangling; ++demangler) + if (style == demangler->demangling_style) + { + current_demangling_style = style; + return current_demangling_style; + } + + return unknown_demangling; +} + +/* Do string name to style translation */ + +enum demangling_styles +cplus_demangle_name_to_style (const char *name) +{ + const struct demangler_engine *demangler = libiberty_demanglers; + + for (; demangler->demangling_style != unknown_demangling; ++demangler) + if (strcmp (name, demangler->demangling_style_name) == 0) + return demangler->demangling_style; + + return unknown_demangling; +} + +/* char *cplus_demangle (const char *mangled, int options) + + If MANGLED is a mangled function name produced by GNU C++, then + a pointer to a @code{malloc}ed string giving a C++ representation + of the name will be returned; otherwise NULL will be returned. + It is the caller's responsibility to free the string which + is returned. + + The OPTIONS arg may contain one or more of the following bits: + + DMGL_ANSI ANSI qualifiers such as `const' and `void' are + included. + DMGL_PARAMS Function parameters are included. + + For example, + + cplus_demangle ("foo__1Ai", DMGL_PARAMS) => "A::foo(int)" + cplus_demangle ("foo__1Ai", DMGL_PARAMS | DMGL_ANSI) => "A::foo(int)" + cplus_demangle ("foo__1Ai", 0) => "A::foo" + + cplus_demangle ("foo__1Afe", DMGL_PARAMS) => "A::foo(float,...)" + cplus_demangle ("foo__1Afe", DMGL_PARAMS | DMGL_ANSI)=> "A::foo(float,...)" + cplus_demangle ("foo__1Afe", 0) => "A::foo" + + Note that any leading underscores, or other such characters prepended by + the compilation system, are presumed to have already been stripped from + MANGLED. */ + +char * +cplus_demangle (const char *mangled, int options) +{ + char *ret; + struct work_stuff work[1]; + + if (current_demangling_style == no_demangling) + return xstrdup (mangled); + + memset ((char *) work, 0, sizeof (work)); + work->options = options; + if ((work->options & DMGL_STYLE_MASK) == 0) + work->options |= (int) current_demangling_style & DMGL_STYLE_MASK; + + /* The V3 ABI demangling is implemented elsewhere. */ + if (GNU_V3_DEMANGLING || AUTO_DEMANGLING) + { + ret = cplus_demangle_v3 (mangled, work->options); + if (ret || GNU_V3_DEMANGLING) + return ret; + } + + if (JAVA_DEMANGLING) + { + ret = java_demangle_v3 (mangled); + if (ret) + return ret; + } + + if (GNAT_DEMANGLING) + return ada_demangle(mangled,options); + + ret = internal_cplus_demangle (work, mangled); + squangle_mop_up (work); + return (ret); +} + + +/* Assuming *OLD_VECT points to an array of *SIZE objects of size + ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, + updating *OLD_VECT and *SIZE as necessary. */ + +static void +grow_vect (char **old_vect, size_t *size, size_t min_size, int element_size) +{ + if (*size < min_size) + { + *size *= 2; + if (*size < min_size) + *size = min_size; + *old_vect = XRESIZEVAR (char, *old_vect, *size * element_size); + } +} + +/* Demangle ada names: + 1. Discard final __{DIGIT}+ or ${DIGIT}+ + 2. Convert other instances of embedded "__" to `.'. + 3. Discard leading _ada_. + 4. Remove everything after first ___ if it is followed by 'X'. + 5. Put symbols that should be suppressed in <...> brackets. + The resulting string is valid until the next call of ada_demangle. */ + +static char * +ada_demangle (const char *mangled, int option ATTRIBUTE_UNUSED) +{ + int i, j; + int len0; + const char* p; + char *demangled = NULL; + int changed; + size_t demangled_size = 0; + + changed = 0; + + if (strncmp (mangled, "_ada_", 5) == 0) + { + mangled += 5; + changed = 1; + } + + if (mangled[0] == '_' || mangled[0] == '<') + goto Suppress; + + p = strstr (mangled, "___"); + if (p == NULL) + len0 = strlen (mangled); + else + { + if (p[3] == 'X') + { + len0 = p - mangled; + changed = 1; + } + else + goto Suppress; + } + + /* Make demangled big enough for possible expansion by operator name. */ + grow_vect (&demangled, + &demangled_size, 2 * len0 + 1, + sizeof (char)); + + if (ISDIGIT ((unsigned char) mangled[len0 - 1])) { + for (i = len0 - 2; i >= 0 && ISDIGIT ((unsigned char) mangled[i]); i -= 1) + ; + if (i > 1 && mangled[i] == '_' && mangled[i - 1] == '_') + { + len0 = i - 1; + changed = 1; + } + else if (mangled[i] == '$') + { + len0 = i; + changed = 1; + } + } + + for (i = 0, j = 0; i < len0 && ! ISALPHA ((unsigned char)mangled[i]); + i += 1, j += 1) + demangled[j] = mangled[i]; + + while (i < len0) + { + if (i < len0 - 2 && mangled[i] == '_' && mangled[i + 1] == '_') + { + demangled[j] = '.'; + changed = 1; + i += 2; j += 1; + } + else + { + demangled[j] = mangled[i]; + i += 1; j += 1; + } + } + demangled[j] = '\000'; + + for (i = 0; demangled[i] != '\0'; i += 1) + if (ISUPPER ((unsigned char)demangled[i]) || demangled[i] == ' ') + goto Suppress; + + if (! changed) + return NULL; + else + return demangled; + + Suppress: + grow_vect (&demangled, + &demangled_size, strlen (mangled) + 3, + sizeof (char)); + + if (mangled[0] == '<') + strcpy (demangled, mangled); + else + sprintf (demangled, "<%s>", mangled); + + return demangled; +} + +/* This function performs most of what cplus_demangle use to do, but + to be able to demangle a name with a B, K or n code, we need to + have a longer term memory of what types have been seen. The original + now initializes and cleans up the squangle code info, while internal + calls go directly to this routine to avoid resetting that info. */ + +static char * +internal_cplus_demangle (struct work_stuff *work, const char *mangled) +{ + + string decl; + int success = 0; + char *demangled = NULL; + int s1, s2, s3, s4; + s1 = work->constructor; + s2 = work->destructor; + s3 = work->static_type; + s4 = work->type_quals; + work->constructor = work->destructor = 0; + work->type_quals = TYPE_UNQUALIFIED; + work->dllimported = 0; + + if ((mangled != NULL) && (*mangled != '\0')) + { + string_init (&decl); + + /* First check to see if gnu style demangling is active and if the + string to be demangled contains a CPLUS_MARKER. If so, attempt to + recognize one of the gnu special forms rather than looking for a + standard prefix. In particular, don't worry about whether there + is a "__" string in the mangled string. Consider "_$_5__foo" for + example. */ + + if ((AUTO_DEMANGLING || GNU_DEMANGLING)) + { + success = gnu_special (work, &mangled, &decl); + } + if (!success) + { + success = demangle_prefix (work, &mangled, &decl); + } + if (success && (*mangled != '\0')) + { + success = demangle_signature (work, &mangled, &decl); + } + if (work->constructor == 2) + { + string_prepend (&decl, "global constructors keyed to "); + work->constructor = 0; + } + else if (work->destructor == 2) + { + string_prepend (&decl, "global destructors keyed to "); + work->destructor = 0; + } + else if (work->dllimported == 1) + { + string_prepend (&decl, "import stub for "); + work->dllimported = 0; + } + demangled = mop_up (work, &decl, success); + } + work->constructor = s1; + work->destructor = s2; + work->static_type = s3; + work->type_quals = s4; + return demangled; +} + + +/* Clear out and squangling related storage */ +static void +squangle_mop_up (struct work_stuff *work) +{ + /* clean up the B and K type mangling types. */ + forget_B_and_K_types (work); + if (work -> btypevec != NULL) + { + free ((char *) work -> btypevec); + } + if (work -> ktypevec != NULL) + { + free ((char *) work -> ktypevec); + } +} + + +/* Copy the work state and storage. */ + +static void +work_stuff_copy_to_from (struct work_stuff *to, struct work_stuff *from) +{ + int i; + + delete_work_stuff (to); + + /* Shallow-copy scalars. */ + memcpy (to, from, sizeof (*to)); + + /* Deep-copy dynamic storage. */ + if (from->typevec_size) + to->typevec = XNEWVEC (char *, from->typevec_size); + + for (i = 0; i < from->ntypes; i++) + { + int len = strlen (from->typevec[i]) + 1; + + to->typevec[i] = XNEWVEC (char, len); + memcpy (to->typevec[i], from->typevec[i], len); + } + + if (from->ksize) + to->ktypevec = XNEWVEC (char *, from->ksize); + + for (i = 0; i < from->numk; i++) + { + int len = strlen (from->ktypevec[i]) + 1; + + to->ktypevec[i] = XNEWVEC (char, len); + memcpy (to->ktypevec[i], from->ktypevec[i], len); + } + + if (from->bsize) + to->btypevec = XNEWVEC (char *, from->bsize); + + for (i = 0; i < from->numb; i++) + { + int len = strlen (from->btypevec[i]) + 1; + + to->btypevec[i] = XNEWVEC (char , len); + memcpy (to->btypevec[i], from->btypevec[i], len); + } + + if (from->ntmpl_args) + to->tmpl_argvec = XNEWVEC (char *, from->ntmpl_args); + + for (i = 0; i < from->ntmpl_args; i++) + { + int len = strlen (from->tmpl_argvec[i]) + 1; + + to->tmpl_argvec[i] = XNEWVEC (char, len); + memcpy (to->tmpl_argvec[i], from->tmpl_argvec[i], len); + } + + if (from->previous_argument) + { + to->previous_argument = XNEW (string); + string_init (to->previous_argument); + string_appends (to->previous_argument, from->previous_argument); + } +} + + +/* Delete dynamic stuff in work_stuff that is not to be re-used. */ + +static void +delete_non_B_K_work_stuff (struct work_stuff *work) +{ + /* Discard the remembered types, if any. */ + + forget_types (work); + if (work -> typevec != NULL) + { + free ((char *) work -> typevec); + work -> typevec = NULL; + work -> typevec_size = 0; + } + if (work->tmpl_argvec) + { + int i; + + for (i = 0; i < work->ntmpl_args; i++) + if (work->tmpl_argvec[i]) + free ((char*) work->tmpl_argvec[i]); + + free ((char*) work->tmpl_argvec); + work->tmpl_argvec = NULL; + } + if (work->previous_argument) + { + string_delete (work->previous_argument); + free ((char*) work->previous_argument); + work->previous_argument = NULL; + } +} + + +/* Delete all dynamic storage in work_stuff. */ +static void +delete_work_stuff (struct work_stuff *work) +{ + delete_non_B_K_work_stuff (work); + squangle_mop_up (work); +} + + +/* Clear out any mangled storage */ + +static char * +mop_up (struct work_stuff *work, string *declp, int success) +{ + char *demangled = NULL; + + delete_non_B_K_work_stuff (work); + + /* If demangling was successful, ensure that the demangled string is null + terminated and return it. Otherwise, free the demangling decl. */ + + if (!success) + { + string_delete (declp); + } + else + { + string_appendn (declp, "", 1); + demangled = declp->b; + } + return (demangled); +} + +/* + +LOCAL FUNCTION + + demangle_signature -- demangle the signature part of a mangled name + +SYNOPSIS + + static int + demangle_signature (struct work_stuff *work, const char **mangled, + string *declp); + +DESCRIPTION + + Consume and demangle the signature portion of the mangled name. + + DECLP is the string where demangled output is being built. At + entry it contains the demangled root name from the mangled name + prefix. I.E. either a demangled operator name or the root function + name. In some special cases, it may contain nothing. + + *MANGLED points to the current unconsumed location in the mangled + name. As tokens are consumed and demangling is performed, the + pointer is updated to continuously point at the next token to + be consumed. + + Demangling GNU style mangled names is nasty because there is no + explicit token that marks the start of the outermost function + argument list. */ + +static int +demangle_signature (struct work_stuff *work, + const char **mangled, string *declp) +{ + int success = 1; + int func_done = 0; + int expect_func = 0; + int expect_return_type = 0; + const char *oldmangled = NULL; + string trawname; + string tname; + + while (success && (**mangled != '\0')) + { + switch (**mangled) + { + case 'Q': + oldmangled = *mangled; + success = demangle_qualified (work, mangled, declp, 1, 0); + if (success) + remember_type (work, oldmangled, *mangled - oldmangled); + if (AUTO_DEMANGLING || GNU_DEMANGLING) + expect_func = 1; + oldmangled = NULL; + break; + + case 'K': + oldmangled = *mangled; + success = demangle_qualified (work, mangled, declp, 1, 0); + if (AUTO_DEMANGLING || GNU_DEMANGLING) + { + expect_func = 1; + } + oldmangled = NULL; + break; + + case 'S': + /* Static member function */ + if (oldmangled == NULL) + { + oldmangled = *mangled; + } + (*mangled)++; + work -> static_type = 1; + break; + + case 'C': + case 'V': + case 'u': + work->type_quals |= code_for_qualifier (**mangled); + + /* a qualified member function */ + if (oldmangled == NULL) + oldmangled = *mangled; + (*mangled)++; + break; + + case 'L': + /* Local class name follows after "Lnnn_" */ + if (HP_DEMANGLING) + { + while (**mangled && (**mangled != '_')) + (*mangled)++; + if (!**mangled) + success = 0; + else + (*mangled)++; + } + else + success = 0; + break; + + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + if (oldmangled == NULL) + { + oldmangled = *mangled; + } + work->temp_start = -1; /* uppermost call to demangle_class */ + success = demangle_class (work, mangled, declp); + if (success) + { + remember_type (work, oldmangled, *mangled - oldmangled); + } + if (AUTO_DEMANGLING || GNU_DEMANGLING || EDG_DEMANGLING) + { + /* EDG and others will have the "F", so we let the loop cycle + if we are looking at one. */ + if (**mangled != 'F') + expect_func = 1; + } + oldmangled = NULL; + break; + + case 'B': + { + string s; + success = do_type (work, mangled, &s); + if (success) + { + string_append (&s, SCOPE_STRING (work)); + string_prepends (declp, &s); + string_delete (&s); + } + oldmangled = NULL; + expect_func = 1; + } + break; + + case 'F': + /* Function */ + /* ARM/HP style demangling includes a specific 'F' character after + the class name. For GNU style, it is just implied. So we can + safely just consume any 'F' at this point and be compatible + with either style. */ + + oldmangled = NULL; + func_done = 1; + (*mangled)++; + + /* For lucid/ARM/HP style we have to forget any types we might + have remembered up to this point, since they were not argument + types. GNU style considers all types seen as available for + back references. See comment in demangle_args() */ + + if (LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) + { + forget_types (work); + } + success = demangle_args (work, mangled, declp); + /* After picking off the function args, we expect to either + find the function return type (preceded by an '_') or the + end of the string. */ + if (success && (AUTO_DEMANGLING || EDG_DEMANGLING) && **mangled == '_') + { + ++(*mangled); + /* At this level, we do not care about the return type. */ + success = do_type (work, mangled, &tname); + string_delete (&tname); + } + + break; + + case 't': + /* G++ Template */ + string_init(&trawname); + string_init(&tname); + if (oldmangled == NULL) + { + oldmangled = *mangled; + } + success = demangle_template (work, mangled, &tname, + &trawname, 1, 1); + if (success) + { + remember_type (work, oldmangled, *mangled - oldmangled); + } + string_append (&tname, SCOPE_STRING (work)); + + string_prepends(declp, &tname); + if (work -> destructor & 1) + { + string_prepend (&trawname, "~"); + string_appends (declp, &trawname); + work->destructor -= 1; + } + if ((work->constructor & 1) || (work->destructor & 1)) + { + string_appends (declp, &trawname); + work->constructor -= 1; + } + string_delete(&trawname); + string_delete(&tname); + oldmangled = NULL; + expect_func = 1; + break; + + case '_': + if ((AUTO_DEMANGLING || GNU_DEMANGLING) && expect_return_type) + { + /* Read the return type. */ + string return_type; + + (*mangled)++; + success = do_type (work, mangled, &return_type); + APPEND_BLANK (&return_type); + + string_prepends (declp, &return_type); + string_delete (&return_type); + break; + } + else + /* At the outermost level, we cannot have a return type specified, + so if we run into another '_' at this point we are dealing with + a mangled name that is either bogus, or has been mangled by + some algorithm we don't know how to deal with. So just + reject the entire demangling. */ + /* However, "_nnn" is an expected suffix for alternate entry point + numbered nnn for a function, with HP aCC, so skip over that + without reporting failure. pai/1997-09-04 */ + if (HP_DEMANGLING) + { + (*mangled)++; + while (**mangled && ISDIGIT ((unsigned char)**mangled)) + (*mangled)++; + } + else + success = 0; + break; + + case 'H': + if (AUTO_DEMANGLING || GNU_DEMANGLING) + { + /* A G++ template function. Read the template arguments. */ + success = demangle_template (work, mangled, declp, 0, 0, + 0); + if (!(work->constructor & 1)) + expect_return_type = 1; + (*mangled)++; + break; + } + else + /* fall through */ + {;} + + default: + if (AUTO_DEMANGLING || GNU_DEMANGLING) + { + /* Assume we have stumbled onto the first outermost function + argument token, and start processing args. */ + func_done = 1; + success = demangle_args (work, mangled, declp); + } + else + { + /* Non-GNU demanglers use a specific token to mark the start + of the outermost function argument tokens. Typically 'F', + for ARM/HP-demangling, for example. So if we find something + we are not prepared for, it must be an error. */ + success = 0; + } + break; + } + /* + if (AUTO_DEMANGLING || GNU_DEMANGLING) + */ + { + if (success && expect_func) + { + func_done = 1; + if (LUCID_DEMANGLING || ARM_DEMANGLING || EDG_DEMANGLING) + { + forget_types (work); + } + success = demangle_args (work, mangled, declp); + /* Since template include the mangling of their return types, + we must set expect_func to 0 so that we don't try do + demangle more arguments the next time we get here. */ + expect_func = 0; + } + } + } + if (success && !func_done) + { + if (AUTO_DEMANGLING || GNU_DEMANGLING) + { + /* With GNU style demangling, bar__3foo is 'foo::bar(void)', and + bar__3fooi is 'foo::bar(int)'. We get here when we find the + first case, and need to ensure that the '(void)' gets added to + the current declp. Note that with ARM/HP, the first case + represents the name of a static data member 'foo::bar', + which is in the current declp, so we leave it alone. */ + success = demangle_args (work, mangled, declp); + } + } + if (success && PRINT_ARG_TYPES) + { + if (work->static_type) + string_append (declp, " static"); + if (work->type_quals != TYPE_UNQUALIFIED) + { + APPEND_BLANK (declp); + string_append (declp, qualifier_string (work->type_quals)); + } + } + + return (success); +} + +#if 0 + +static int +demangle_method_args (struct work_stuff *work, const char **mangled, + string *declp) +{ + int success = 0; + + if (work -> static_type) + { + string_append (declp, *mangled + 1); + *mangled += strlen (*mangled); + success = 1; + } + else + { + success = demangle_args (work, mangled, declp); + } + return (success); +} + +#endif + +static int +demangle_template_template_parm (struct work_stuff *work, + const char **mangled, string *tname) +{ + int i; + int r; + int need_comma = 0; + int success = 1; + string temp; + + string_append (tname, "template <"); + /* get size of template parameter list */ + if (get_count (mangled, &r)) + { + for (i = 0; i < r; i++) + { + if (need_comma) + { + string_append (tname, ", "); + } + + /* Z for type parameters */ + if (**mangled == 'Z') + { + (*mangled)++; + string_append (tname, "class"); + } + /* z for template parameters */ + else if (**mangled == 'z') + { + (*mangled)++; + success = + demangle_template_template_parm (work, mangled, tname); + if (!success) + { + break; + } + } + else + { + /* temp is initialized in do_type */ + success = do_type (work, mangled, &temp); + if (success) + { + string_appends (tname, &temp); + } + string_delete(&temp); + if (!success) + { + break; + } + } + need_comma = 1; + } + + } + if (tname->p[-1] == '>') + string_append (tname, " "); + string_append (tname, "> class"); + return (success); +} + +static int +demangle_expression (struct work_stuff *work, const char **mangled, + string *s, type_kind_t tk) +{ + int need_operator = 0; + int success; + + success = 1; + string_appendn (s, "(", 1); + (*mangled)++; + while (success && **mangled != 'W' && **mangled != '\0') + { + if (need_operator) + { + size_t i; + size_t len; + + success = 0; + + len = strlen (*mangled); + + for (i = 0; i < ARRAY_SIZE (optable); ++i) + { + size_t l = strlen (optable[i].in); + + if (l <= len + && memcmp (optable[i].in, *mangled, l) == 0) + { + string_appendn (s, " ", 1); + string_append (s, optable[i].out); + string_appendn (s, " ", 1); + success = 1; + (*mangled) += l; + break; + } + } + + if (!success) + break; + } + else + need_operator = 1; + + success = demangle_template_value_parm (work, mangled, s, tk); + } + + if (**mangled != 'W') + success = 0; + else + { + string_appendn (s, ")", 1); + (*mangled)++; + } + + return success; +} + +static int +demangle_integral_value (struct work_stuff *work, + const char **mangled, string *s) +{ + int success; + + if (**mangled == 'E') + success = demangle_expression (work, mangled, s, tk_integral); + else if (**mangled == 'Q' || **mangled == 'K') + success = demangle_qualified (work, mangled, s, 0, 1); + else + { + int value; + + /* By default, we let the number decide whether we shall consume an + underscore. */ + int multidigit_without_leading_underscore = 0; + int leave_following_underscore = 0; + + success = 0; + + if (**mangled == '_') + { + if (mangled[0][1] == 'm') + { + /* Since consume_count_with_underscores does not handle the + `m'-prefix we must do it here, using consume_count and + adjusting underscores: we have to consume the underscore + matching the prepended one. */ + multidigit_without_leading_underscore = 1; + string_appendn (s, "-", 1); + (*mangled) += 2; + } + else + { + /* Do not consume a following underscore; + consume_count_with_underscores will consume what + should be consumed. */ + leave_following_underscore = 1; + } + } + else + { + /* Negative numbers are indicated with a leading `m'. */ + if (**mangled == 'm') + { + string_appendn (s, "-", 1); + (*mangled)++; + } + /* Since consume_count_with_underscores does not handle + multi-digit numbers that do not start with an underscore, + and this number can be an integer template parameter, + we have to call consume_count. */ + multidigit_without_leading_underscore = 1; + /* These multi-digit numbers never end on an underscore, + so if there is one then don't eat it. */ + leave_following_underscore = 1; + } + + /* We must call consume_count if we expect to remove a trailing + underscore, since consume_count_with_underscores expects + the leading underscore (that we consumed) if it is to handle + multi-digit numbers. */ + if (multidigit_without_leading_underscore) + value = consume_count (mangled); + else + value = consume_count_with_underscores (mangled); + + if (value != -1) + { + char buf[INTBUF_SIZE]; + sprintf (buf, "%d", value); + string_append (s, buf); + + /* Numbers not otherwise delimited, might have an underscore + appended as a delimeter, which we should skip. + + ??? This used to always remove a following underscore, which + is wrong. If other (arbitrary) cases are followed by an + underscore, we need to do something more radical. */ + + if ((value > 9 || multidigit_without_leading_underscore) + && ! leave_following_underscore + && **mangled == '_') + (*mangled)++; + + /* All is well. */ + success = 1; + } + } + + return success; +} + +/* Demangle the real value in MANGLED. */ + +static int +demangle_real_value (struct work_stuff *work, + const char **mangled, string *s) +{ + if (**mangled == 'E') + return demangle_expression (work, mangled, s, tk_real); + + if (**mangled == 'm') + { + string_appendn (s, "-", 1); + (*mangled)++; + } + while (ISDIGIT ((unsigned char)**mangled)) + { + string_appendn (s, *mangled, 1); + (*mangled)++; + } + if (**mangled == '.') /* fraction */ + { + string_appendn (s, ".", 1); + (*mangled)++; + while (ISDIGIT ((unsigned char)**mangled)) + { + string_appendn (s, *mangled, 1); + (*mangled)++; + } + } + if (**mangled == 'e') /* exponent */ + { + string_appendn (s, "e", 1); + (*mangled)++; + while (ISDIGIT ((unsigned char)**mangled)) + { + string_appendn (s, *mangled, 1); + (*mangled)++; + } + } + + return 1; +} + +static int +demangle_template_value_parm (struct work_stuff *work, const char **mangled, + string *s, type_kind_t tk) +{ + int success = 1; + + if (**mangled == 'Y') + { + /* The next argument is a template parameter. */ + int idx; + + (*mangled)++; + idx = consume_count_with_underscores (mangled); + if (idx == -1 + || (work->tmpl_argvec && idx >= work->ntmpl_args) + || consume_count_with_underscores (mangled) == -1) + return -1; + if (work->tmpl_argvec) + string_append (s, work->tmpl_argvec[idx]); + else + string_append_template_idx (s, idx); + } + else if (tk == tk_integral) + success = demangle_integral_value (work, mangled, s); + else if (tk == tk_char) + { + char tmp[2]; + int val; + if (**mangled == 'm') + { + string_appendn (s, "-", 1); + (*mangled)++; + } + string_appendn (s, "'", 1); + val = consume_count(mangled); + if (val <= 0) + success = 0; + else + { + tmp[0] = (char)val; + tmp[1] = '\0'; + string_appendn (s, &tmp[0], 1); + string_appendn (s, "'", 1); + } + } + else if (tk == tk_bool) + { + int val = consume_count (mangled); + if (val == 0) + string_appendn (s, "false", 5); + else if (val == 1) + string_appendn (s, "true", 4); + else + success = 0; + } + else if (tk == tk_real) + success = demangle_real_value (work, mangled, s); + else if (tk == tk_pointer || tk == tk_reference) + { + if (**mangled == 'Q') + success = demangle_qualified (work, mangled, s, + /*isfuncname=*/0, + /*append=*/1); + else + { + int symbol_len = consume_count (mangled); + if (symbol_len == -1) + return -1; + if (symbol_len == 0) + string_appendn (s, "0", 1); + else + { + char *p = XNEWVEC (char, symbol_len + 1), *q; + strncpy (p, *mangled, symbol_len); + p [symbol_len] = '\0'; + /* We use cplus_demangle here, rather than + internal_cplus_demangle, because the name of the entity + mangled here does not make use of any of the squangling + or type-code information we have built up thus far; it is + mangled independently. */ + q = cplus_demangle (p, work->options); + if (tk == tk_pointer) + string_appendn (s, "&", 1); + /* FIXME: Pointer-to-member constants should get a + qualifying class name here. */ + if (q) + { + string_append (s, q); + free (q); + } + else + string_append (s, p); + free (p); + } + *mangled += symbol_len; + } + } + + return success; +} + +/* Demangle the template name in MANGLED. The full name of the + template (e.g., S<int>) is placed in TNAME. The name without the + template parameters (e.g. S) is placed in TRAWNAME if TRAWNAME is + non-NULL. If IS_TYPE is nonzero, this template is a type template, + not a function template. If both IS_TYPE and REMEMBER are nonzero, + the template is remembered in the list of back-referenceable + types. */ + +static int +demangle_template (struct work_stuff *work, const char **mangled, + string *tname, string *trawname, + int is_type, int remember) +{ + int i; + int r; + int need_comma = 0; + int success = 0; + int is_java_array = 0; + string temp; + + (*mangled)++; + if (is_type) + { + /* get template name */ + if (**mangled == 'z') + { + int idx; + (*mangled)++; + (*mangled)++; + + idx = consume_count_with_underscores (mangled); + if (idx == -1 + || (work->tmpl_argvec && idx >= work->ntmpl_args) + || consume_count_with_underscores (mangled) == -1) + return (0); + + if (work->tmpl_argvec) + { + string_append (tname, work->tmpl_argvec[idx]); + if (trawname) + string_append (trawname, work->tmpl_argvec[idx]); + } + else + { + string_append_template_idx (tname, idx); + if (trawname) + string_append_template_idx (trawname, idx); + } + } + else + { + if ((r = consume_count (mangled)) <= 0 + || (int) strlen (*mangled) < r) + { + return (0); + } + is_java_array = (work -> options & DMGL_JAVA) + && strncmp (*mangled, "JArray1Z", 8) == 0; + if (! is_java_array) + { + string_appendn (tname, *mangled, r); + } + if (trawname) + string_appendn (trawname, *mangled, r); + *mangled += r; + } + } + if (!is_java_array) + string_append (tname, "<"); + /* get size of template parameter list */ + if (!get_count (mangled, &r)) + { + return (0); + } + if (!is_type) + { + /* Create an array for saving the template argument values. */ + work->tmpl_argvec = XNEWVEC (char *, r); + work->ntmpl_args = r; + for (i = 0; i < r; i++) + work->tmpl_argvec[i] = 0; + } + for (i = 0; i < r; i++) + { + if (need_comma) + { + string_append (tname, ", "); + } + /* Z for type parameters */ + if (**mangled == 'Z') + { + (*mangled)++; + /* temp is initialized in do_type */ + success = do_type (work, mangled, &temp); + if (success) + { + string_appends (tname, &temp); + + if (!is_type) + { + /* Save the template argument. */ + int len = temp.p - temp.b; + work->tmpl_argvec[i] = XNEWVEC (char, len + 1); + memcpy (work->tmpl_argvec[i], temp.b, len); + work->tmpl_argvec[i][len] = '\0'; + } + } + string_delete(&temp); + if (!success) + { + break; + } + } + /* z for template parameters */ + else if (**mangled == 'z') + { + int r2; + (*mangled)++; + success = demangle_template_template_parm (work, mangled, tname); + + if (success + && (r2 = consume_count (mangled)) > 0 + && (int) strlen (*mangled) >= r2) + { + string_append (tname, " "); + string_appendn (tname, *mangled, r2); + if (!is_type) + { + /* Save the template argument. */ + int len = r2; + work->tmpl_argvec[i] = XNEWVEC (char, len + 1); + memcpy (work->tmpl_argvec[i], *mangled, len); + work->tmpl_argvec[i][len] = '\0'; + } + *mangled += r2; + } + if (!success) + { + break; + } + } + else + { + string param; + string* s; + + /* otherwise, value parameter */ + + /* temp is initialized in do_type */ + success = do_type (work, mangled, &temp); + string_delete(&temp); + if (!success) + break; + + if (!is_type) + { + s = ¶m; + string_init (s); + } + else + s = tname; + + success = demangle_template_value_parm (work, mangled, s, + (type_kind_t) success); + + if (!success) + { + if (!is_type) + string_delete (s); + success = 0; + break; + } + + if (!is_type) + { + int len = s->p - s->b; + work->tmpl_argvec[i] = XNEWVEC (char, len + 1); + memcpy (work->tmpl_argvec[i], s->b, len); + work->tmpl_argvec[i][len] = '\0'; + + string_appends (tname, s); + string_delete (s); + } + } + need_comma = 1; + } + if (is_java_array) + { + string_append (tname, "[]"); + } + else + { + if (tname->p[-1] == '>') + string_append (tname, " "); + string_append (tname, ">"); + } + + if (is_type && remember) + { + const int bindex = register_Btype (work); + remember_Btype (work, tname->b, LEN_STRING (tname), bindex); + } + + /* + if (work -> static_type) + { + string_append (declp, *mangled + 1); + *mangled += strlen (*mangled); + success = 1; + } + else + { + success = demangle_args (work, mangled, declp); + } + } + */ + return (success); +} + +static int +arm_pt (struct work_stuff *work, const char *mangled, + int n, const char **anchor, const char **args) +{ + /* Check if ARM template with "__pt__" in it ("parameterized type") */ + /* Allow HP also here, because HP's cfront compiler follows ARM to some extent */ + if ((ARM_DEMANGLING || HP_DEMANGLING) && (*anchor = strstr (mangled, "__pt__"))) + { + int len; + *args = *anchor + 6; + len = consume_count (args); + if (len == -1) + return 0; + if (*args + len == mangled + n && **args == '_') + { + ++*args; + return 1; + } + } + if (AUTO_DEMANGLING || EDG_DEMANGLING) + { + if ((*anchor = strstr (mangled, "__tm__")) + || (*anchor = strstr (mangled, "__ps__")) + || (*anchor = strstr (mangled, "__pt__"))) + { + int len; + *args = *anchor + 6; + len = consume_count (args); + if (len == -1) + return 0; + if (*args + len == mangled + n && **args == '_') + { + ++*args; + return 1; + } + } + else if ((*anchor = strstr (mangled, "__S"))) + { + int len; + *args = *anchor + 3; + len = consume_count (args); + if (len == -1) + return 0; + if (*args + len == mangled + n && **args == '_') + { + ++*args; + return 1; + } + } + } + + return 0; +} + +static void +demangle_arm_hp_template (struct work_stuff *work, const char **mangled, + int n, string *declp) +{ + const char *p; + const char *args; + const char *e = *mangled + n; + string arg; + + /* Check for HP aCC template spec: classXt1t2 where t1, t2 are + template args */ + if (HP_DEMANGLING && ((*mangled)[n] == 'X')) + { + char *start_spec_args = NULL; + int hold_options; + + /* First check for and omit template specialization pseudo-arguments, + such as in "Spec<#1,#1.*>" */ + start_spec_args = strchr (*mangled, '<'); + if (start_spec_args && (start_spec_args - *mangled < n)) + string_appendn (declp, *mangled, start_spec_args - *mangled); + else + string_appendn (declp, *mangled, n); + (*mangled) += n + 1; + string_init (&arg); + if (work->temp_start == -1) /* non-recursive call */ + work->temp_start = declp->p - declp->b; + + /* We want to unconditionally demangle parameter types in + template parameters. */ + hold_options = work->options; + work->options |= DMGL_PARAMS; + + string_append (declp, "<"); + while (1) + { + string_delete (&arg); + switch (**mangled) + { + case 'T': + /* 'T' signals a type parameter */ + (*mangled)++; + if (!do_type (work, mangled, &arg)) + goto hpacc_template_args_done; + break; + + case 'U': + case 'S': + /* 'U' or 'S' signals an integral value */ + if (!do_hpacc_template_const_value (work, mangled, &arg)) + goto hpacc_template_args_done; + break; + + case 'A': + /* 'A' signals a named constant expression (literal) */ + if (!do_hpacc_template_literal (work, mangled, &arg)) + goto hpacc_template_args_done; + break; + + default: + /* Today, 1997-09-03, we have only the above types + of template parameters */ + /* FIXME: maybe this should fail and return null */ + goto hpacc_template_args_done; + } + string_appends (declp, &arg); + /* Check if we're at the end of template args. + 0 if at end of static member of template class, + _ if done with template args for a function */ + if ((**mangled == '\000') || (**mangled == '_')) + break; + else + string_append (declp, ","); + } + hpacc_template_args_done: + string_append (declp, ">"); + string_delete (&arg); + if (**mangled == '_') + (*mangled)++; + work->options = hold_options; + return; + } + /* ARM template? (Also handles HP cfront extensions) */ + else if (arm_pt (work, *mangled, n, &p, &args)) + { + int hold_options; + string type_str; + + string_init (&arg); + string_appendn (declp, *mangled, p - *mangled); + if (work->temp_start == -1) /* non-recursive call */ + work->temp_start = declp->p - declp->b; + + /* We want to unconditionally demangle parameter types in + template parameters. */ + hold_options = work->options; + work->options |= DMGL_PARAMS; + + string_append (declp, "<"); + /* should do error checking here */ + while (args < e) { + string_delete (&arg); + + /* Check for type or literal here */ + switch (*args) + { + /* HP cfront extensions to ARM for template args */ + /* spec: Xt1Lv1 where t1 is a type, v1 is a literal value */ + /* FIXME: We handle only numeric literals for HP cfront */ + case 'X': + /* A typed constant value follows */ + args++; + if (!do_type (work, &args, &type_str)) + goto cfront_template_args_done; + string_append (&arg, "("); + string_appends (&arg, &type_str); + string_delete (&type_str); + string_append (&arg, ")"); + if (*args != 'L') + goto cfront_template_args_done; + args++; + /* Now snarf a literal value following 'L' */ + if (!snarf_numeric_literal (&args, &arg)) + goto cfront_template_args_done; + break; + + case 'L': + /* Snarf a literal following 'L' */ + args++; + if (!snarf_numeric_literal (&args, &arg)) + goto cfront_template_args_done; + break; + default: + /* Not handling other HP cfront stuff */ + { + const char* old_args = args; + if (!do_type (work, &args, &arg)) + goto cfront_template_args_done; + + /* Fail if we didn't make any progress: prevent infinite loop. */ + if (args == old_args) + { + work->options = hold_options; + return; + } + } + } + string_appends (declp, &arg); + string_append (declp, ","); + } + cfront_template_args_done: + string_delete (&arg); + if (args >= e) + --declp->p; /* remove extra comma */ + string_append (declp, ">"); + work->options = hold_options; + } + else if (n>10 && strncmp (*mangled, "_GLOBAL_", 8) == 0 + && (*mangled)[9] == 'N' + && (*mangled)[8] == (*mangled)[10] + && strchr (cplus_markers, (*mangled)[8])) + { + /* A member of the anonymous namespace. */ + string_append (declp, "{anonymous}"); + } + else + { + if (work->temp_start == -1) /* non-recursive call only */ + work->temp_start = 0; /* disable in recursive calls */ + string_appendn (declp, *mangled, n); + } + *mangled += n; +} + +/* Extract a class name, possibly a template with arguments, from the + mangled string; qualifiers, local class indicators, etc. have + already been dealt with */ + +static int +demangle_class_name (struct work_stuff *work, const char **mangled, + string *declp) +{ + int n; + int success = 0; + + n = consume_count (mangled); + if (n == -1) + return 0; + if ((int) strlen (*mangled) >= n) + { + demangle_arm_hp_template (work, mangled, n, declp); + success = 1; + } + + return (success); +} + +/* + +LOCAL FUNCTION + + demangle_class -- demangle a mangled class sequence + +SYNOPSIS + + static int + demangle_class (struct work_stuff *work, const char **mangled, + strint *declp) + +DESCRIPTION + + DECLP points to the buffer into which demangling is being done. + + *MANGLED points to the current token to be demangled. On input, + it points to a mangled class (I.E. "3foo", "13verylongclass", etc.) + On exit, it points to the next token after the mangled class on + success, or the first unconsumed token on failure. + + If the CONSTRUCTOR or DESTRUCTOR flags are set in WORK, then + we are demangling a constructor or destructor. In this case + we prepend "class::class" or "class::~class" to DECLP. + + Otherwise, we prepend "class::" to the current DECLP. + + Reset the constructor/destructor flags once they have been + "consumed". This allows demangle_class to be called later during + the same demangling, to do normal class demangling. + + Returns 1 if demangling is successful, 0 otherwise. + +*/ + +static int +demangle_class (struct work_stuff *work, const char **mangled, string *declp) +{ + int success = 0; + int btype; + string class_name; + char *save_class_name_end = 0; + + string_init (&class_name); + btype = register_Btype (work); + if (demangle_class_name (work, mangled, &class_name)) + { + save_class_name_end = class_name.p; + if ((work->constructor & 1) || (work->destructor & 1)) + { + /* adjust so we don't include template args */ + if (work->temp_start && (work->temp_start != -1)) + { + class_name.p = class_name.b + work->temp_start; + } + string_prepends (declp, &class_name); + if (work -> destructor & 1) + { + string_prepend (declp, "~"); + work -> destructor -= 1; + } + else + { + work -> constructor -= 1; + } + } + class_name.p = save_class_name_end; + remember_Ktype (work, class_name.b, LEN_STRING(&class_name)); + remember_Btype (work, class_name.b, LEN_STRING(&class_name), btype); + string_prepend (declp, SCOPE_STRING (work)); + string_prepends (declp, &class_name); + success = 1; + } + string_delete (&class_name); + return (success); +} + + +/* Called when there's a "__" in the mangled name, with `scan' pointing to + the rightmost guess. + + Find the correct "__"-sequence where the function name ends and the + signature starts, which is ambiguous with GNU mangling. + Call demangle_signature here, so we can make sure we found the right + one; *mangled will be consumed so caller will not make further calls to + demangle_signature. */ + +static int +iterate_demangle_function (struct work_stuff *work, const char **mangled, + string *declp, const char *scan) +{ + const char *mangle_init = *mangled; + int success = 0; + string decl_init; + struct work_stuff work_init; + + if (*(scan + 2) == '\0') + return 0; + + /* Do not iterate for some demangling modes, or if there's only one + "__"-sequence. This is the normal case. */ + if (ARM_DEMANGLING || LUCID_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING + || strstr (scan + 2, "__") == NULL) + { + demangle_function_name (work, mangled, declp, scan); + return 1; + } + + /* Save state so we can restart if the guess at the correct "__" was + wrong. */ + string_init (&decl_init); + string_appends (&decl_init, declp); + memset (&work_init, 0, sizeof work_init); + work_stuff_copy_to_from (&work_init, work); + + /* Iterate over occurrences of __, allowing names and types to have a + "__" sequence in them. We must start with the first (not the last) + occurrence, since "__" most often occur between independent mangled + parts, hence starting at the last occurence inside a signature + might get us a "successful" demangling of the signature. */ + + while (scan[2]) + { + demangle_function_name (work, mangled, declp, scan); + success = demangle_signature (work, mangled, declp); + if (success) + break; + + /* Reset demangle state for the next round. */ + *mangled = mangle_init; + string_clear (declp); + string_appends (declp, &decl_init); + work_stuff_copy_to_from (work, &work_init); + + /* Leave this underscore-sequence. */ + scan += 2; + + /* Scan for the next "__" sequence. */ + while (*scan && (scan[0] != '_' || scan[1] != '_')) + scan++; + + /* Move to last "__" in this sequence. */ + while (*scan && *scan == '_') + scan++; + scan -= 2; + } + + /* Delete saved state. */ + delete_work_stuff (&work_init); + string_delete (&decl_init); + + return success; +} + +/* + +LOCAL FUNCTION + + demangle_prefix -- consume the mangled name prefix and find signature + +SYNOPSIS + + static int + demangle_prefix (struct work_stuff *work, const char **mangled, + string *declp); + +DESCRIPTION + + Consume and demangle the prefix of the mangled name. + While processing the function name root, arrange to call + demangle_signature if the root is ambiguous. + + DECLP points to the string buffer into which demangled output is + placed. On entry, the buffer is empty. On exit it contains + the root function name, the demangled operator name, or in some + special cases either nothing or the completely demangled result. + + MANGLED points to the current pointer into the mangled name. As each + token of the mangled name is consumed, it is updated. Upon entry + the current mangled name pointer points to the first character of + the mangled name. Upon exit, it should point to the first character + of the signature if demangling was successful, or to the first + unconsumed character if demangling of the prefix was unsuccessful. + + Returns 1 on success, 0 otherwise. + */ + +static int +demangle_prefix (struct work_stuff *work, const char **mangled, + string *declp) +{ + int success = 1; + const char *scan; + int i; + + if (strlen(*mangled) > 6 + && (strncmp(*mangled, "_imp__", 6) == 0 + || strncmp(*mangled, "__imp_", 6) == 0)) + { + /* it's a symbol imported from a PE dynamic library. Check for both + new style prefix _imp__ and legacy __imp_ used by older versions + of dlltool. */ + (*mangled) += 6; + work->dllimported = 1; + } + else if (strlen(*mangled) >= 11 && strncmp(*mangled, "_GLOBAL_", 8) == 0) + { + char *marker = strchr (cplus_markers, (*mangled)[8]); + if (marker != NULL && *marker == (*mangled)[10]) + { + if ((*mangled)[9] == 'D') + { + /* it's a GNU global destructor to be executed at program exit */ + (*mangled) += 11; + work->destructor = 2; + if (gnu_special (work, mangled, declp)) + return success; + } + else if ((*mangled)[9] == 'I') + { + /* it's a GNU global constructor to be executed at program init */ + (*mangled) += 11; + work->constructor = 2; + if (gnu_special (work, mangled, declp)) + return success; + } + } + } + else if ((ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) && strncmp(*mangled, "__std__", 7) == 0) + { + /* it's a ARM global destructor to be executed at program exit */ + (*mangled) += 7; + work->destructor = 2; + } + else if ((ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) && strncmp(*mangled, "__sti__", 7) == 0) + { + /* it's a ARM global constructor to be executed at program initial */ + (*mangled) += 7; + work->constructor = 2; + } + + /* This block of code is a reduction in strength time optimization + of: + scan = strstr (*mangled, "__"); */ + + { + scan = *mangled; + + do { + scan = strchr (scan, '_'); + } while (scan != NULL && *++scan != '_'); + + if (scan != NULL) --scan; + } + + if (scan != NULL) + { + /* We found a sequence of two or more '_', ensure that we start at + the last pair in the sequence. */ + i = strspn (scan, "_"); + if (i > 2) + { + scan += (i - 2); + } + } + + if (scan == NULL) + { + success = 0; + } + else if (work -> static_type) + { + if (!ISDIGIT ((unsigned char)scan[0]) && (scan[0] != 't')) + { + success = 0; + } + } + else if ((scan == *mangled) + && (ISDIGIT ((unsigned char)scan[2]) || (scan[2] == 'Q') + || (scan[2] == 't') || (scan[2] == 'K') || (scan[2] == 'H'))) + { + /* The ARM says nothing about the mangling of local variables. + But cfront mangles local variables by prepending __<nesting_level> + to them. As an extension to ARM demangling we handle this case. */ + if ((LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING) + && ISDIGIT ((unsigned char)scan[2])) + { + *mangled = scan + 2; + consume_count (mangled); + string_append (declp, *mangled); + *mangled += strlen (*mangled); + success = 1; + } + else + { + /* A GNU style constructor starts with __[0-9Qt]. But cfront uses + names like __Q2_3foo3bar for nested type names. So don't accept + this style of constructor for cfront demangling. A GNU + style member-template constructor starts with 'H'. */ + if (!(LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING)) + work -> constructor += 1; + *mangled = scan + 2; + } + } + else if (ARM_DEMANGLING && scan[2] == 'p' && scan[3] == 't') + { + /* Cfront-style parameterized type. Handled later as a signature. */ + success = 1; + + /* ARM template? */ + demangle_arm_hp_template (work, mangled, strlen (*mangled), declp); + } + else if (EDG_DEMANGLING && ((scan[2] == 't' && scan[3] == 'm') + || (scan[2] == 'p' && scan[3] == 's') + || (scan[2] == 'p' && scan[3] == 't'))) + { + /* EDG-style parameterized type. Handled later as a signature. */ + success = 1; + + /* EDG template? */ + demangle_arm_hp_template (work, mangled, strlen (*mangled), declp); + } + else if ((scan == *mangled) && !ISDIGIT ((unsigned char)scan[2]) + && (scan[2] != 't')) + { + /* Mangled name starts with "__". Skip over any leading '_' characters, + then find the next "__" that separates the prefix from the signature. + */ + if (!(ARM_DEMANGLING || LUCID_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) + || (arm_special (mangled, declp) == 0)) + { + while (*scan == '_') + { + scan++; + } + if ((scan = strstr (scan, "__")) == NULL || (*(scan + 2) == '\0')) + { + /* No separator (I.E. "__not_mangled"), or empty signature + (I.E. "__not_mangled_either__") */ + success = 0; + } + else + return iterate_demangle_function (work, mangled, declp, scan); + } + } + else if (*(scan + 2) != '\0') + { + /* Mangled name does not start with "__" but does have one somewhere + in there with non empty stuff after it. Looks like a global + function name. Iterate over all "__":s until the right + one is found. */ + return iterate_demangle_function (work, mangled, declp, scan); + } + else + { + /* Doesn't look like a mangled name */ + success = 0; + } + + if (!success && (work->constructor == 2 || work->destructor == 2)) + { + string_append (declp, *mangled); + *mangled += strlen (*mangled); + success = 1; + } + return (success); +} + +/* + +LOCAL FUNCTION + + gnu_special -- special handling of gnu mangled strings + +SYNOPSIS + + static int + gnu_special (struct work_stuff *work, const char **mangled, + string *declp); + + +DESCRIPTION + + Process some special GNU style mangling forms that don't fit + the normal pattern. For example: + + _$_3foo (destructor for class foo) + _vt$foo (foo virtual table) + _vt$foo$bar (foo::bar virtual table) + __vt_foo (foo virtual table, new style with thunks) + _3foo$varname (static data member) + _Q22rs2tu$vw (static data member) + __t6vector1Zii (constructor with template) + __thunk_4__$_7ostream (virtual function thunk) + */ + +static int +gnu_special (struct work_stuff *work, const char **mangled, string *declp) +{ + int n; + int success = 1; + const char *p; + + if ((*mangled)[0] == '_' + && strchr (cplus_markers, (*mangled)[1]) != NULL + && (*mangled)[2] == '_') + { + /* Found a GNU style destructor, get past "_<CPLUS_MARKER>_" */ + (*mangled) += 3; + work -> destructor += 1; + } + else if ((*mangled)[0] == '_' + && (((*mangled)[1] == '_' + && (*mangled)[2] == 'v' + && (*mangled)[3] == 't' + && (*mangled)[4] == '_') + || ((*mangled)[1] == 'v' + && (*mangled)[2] == 't' + && strchr (cplus_markers, (*mangled)[3]) != NULL))) + { + /* Found a GNU style virtual table, get past "_vt<CPLUS_MARKER>" + and create the decl. Note that we consume the entire mangled + input string, which means that demangle_signature has no work + to do. */ + if ((*mangled)[2] == 'v') + (*mangled) += 5; /* New style, with thunks: "__vt_" */ + else + (*mangled) += 4; /* Old style, no thunks: "_vt<CPLUS_MARKER>" */ + while (**mangled != '\0') + { + switch (**mangled) + { + case 'Q': + case 'K': + success = demangle_qualified (work, mangled, declp, 0, 1); + break; + case 't': + success = demangle_template (work, mangled, declp, 0, 1, + 1); + break; + default: + if (ISDIGIT((unsigned char)*mangled[0])) + { + n = consume_count(mangled); + /* We may be seeing a too-large size, or else a + ".<digits>" indicating a static local symbol. In + any case, declare victory and move on; *don't* try + to use n to allocate. */ + if (n > (int) strlen (*mangled)) + { + success = 1; + break; + } + } + else + { + n = strcspn (*mangled, cplus_markers); + } + string_appendn (declp, *mangled, n); + (*mangled) += n; + } + + p = strpbrk (*mangled, cplus_markers); + if (success && ((p == NULL) || (p == *mangled))) + { + if (p != NULL) + { + string_append (declp, SCOPE_STRING (work)); + (*mangled)++; + } + } + else + { + success = 0; + break; + } + } + if (success) + string_append (declp, " virtual table"); + } + else if ((*mangled)[0] == '_' + && (strchr("0123456789Qt", (*mangled)[1]) != NULL) + && (p = strpbrk (*mangled, cplus_markers)) != NULL) + { + /* static data member, "_3foo$varname" for example */ + (*mangled)++; + switch (**mangled) + { + case 'Q': + case 'K': + success = demangle_qualified (work, mangled, declp, 0, 1); + break; + case 't': + success = demangle_template (work, mangled, declp, 0, 1, 1); + break; + default: + n = consume_count (mangled); + if (n < 0 || n > (long) strlen (*mangled)) + { + success = 0; + break; + } + + if (n > 10 && strncmp (*mangled, "_GLOBAL_", 8) == 0 + && (*mangled)[9] == 'N' + && (*mangled)[8] == (*mangled)[10] + && strchr (cplus_markers, (*mangled)[8])) + { + /* A member of the anonymous namespace. There's information + about what identifier or filename it was keyed to, but + it's just there to make the mangled name unique; we just + step over it. */ + string_append (declp, "{anonymous}"); + (*mangled) += n; + + /* Now p points to the marker before the N, so we need to + update it to the first marker after what we consumed. */ + p = strpbrk (*mangled, cplus_markers); + break; + } + + string_appendn (declp, *mangled, n); + (*mangled) += n; + } + if (success && (p == *mangled)) + { + /* Consumed everything up to the cplus_marker, append the + variable name. */ + (*mangled)++; + string_append (declp, SCOPE_STRING (work)); + n = strlen (*mangled); + string_appendn (declp, *mangled, n); + (*mangled) += n; + } + else + { + success = 0; + } + } + else if (strncmp (*mangled, "__thunk_", 8) == 0) + { + int delta; + + (*mangled) += 8; + delta = consume_count (mangled); + if (delta == -1) + success = 0; + else + { + char *method = internal_cplus_demangle (work, ++*mangled); + + if (method) + { + char buf[50]; + sprintf (buf, "virtual function thunk (delta:%d) for ", -delta); + string_append (declp, buf); + string_append (declp, method); + free (method); + n = strlen (*mangled); + (*mangled) += n; + } + else + { + success = 0; + } + } + } + else if (strncmp (*mangled, "__t", 3) == 0 + && ((*mangled)[3] == 'i' || (*mangled)[3] == 'f')) + { + p = (*mangled)[3] == 'i' ? " type_info node" : " type_info function"; + (*mangled) += 4; + switch (**mangled) + { + case 'Q': + case 'K': + success = demangle_qualified (work, mangled, declp, 0, 1); + break; + case 't': + success = demangle_template (work, mangled, declp, 0, 1, 1); + break; + default: + success = do_type (work, mangled, declp); + break; + } + if (success && **mangled != '\0') + success = 0; + if (success) + string_append (declp, p); + } + else + { + success = 0; + } + return (success); +} + +static void +recursively_demangle(struct work_stuff *work, const char **mangled, + string *result, int namelength) +{ + char * recurse = (char *)NULL; + char * recurse_dem = (char *)NULL; + + recurse = XNEWVEC (char, namelength + 1); + memcpy (recurse, *mangled, namelength); + recurse[namelength] = '\000'; + + recurse_dem = cplus_demangle (recurse, work->options); + + if (recurse_dem) + { + string_append (result, recurse_dem); + free (recurse_dem); + } + else + { + string_appendn (result, *mangled, namelength); + } + free (recurse); + *mangled += namelength; +} + +/* + +LOCAL FUNCTION + + arm_special -- special handling of ARM/lucid mangled strings + +SYNOPSIS + + static int + arm_special (const char **mangled, + string *declp); + + +DESCRIPTION + + Process some special ARM style mangling forms that don't fit + the normal pattern. For example: + + __vtbl__3foo (foo virtual table) + __vtbl__3foo__3bar (bar::foo virtual table) + + */ + +static int +arm_special (const char **mangled, string *declp) +{ + int n; + int success = 1; + const char *scan; + + if (strncmp (*mangled, ARM_VTABLE_STRING, ARM_VTABLE_STRLEN) == 0) + { + /* Found a ARM style virtual table, get past ARM_VTABLE_STRING + and create the decl. Note that we consume the entire mangled + input string, which means that demangle_signature has no work + to do. */ + scan = *mangled + ARM_VTABLE_STRLEN; + while (*scan != '\0') /* first check it can be demangled */ + { + n = consume_count (&scan); + if (n == -1) + { + return (0); /* no good */ + } + scan += n; + if (scan[0] == '_' && scan[1] == '_') + { + scan += 2; + } + } + (*mangled) += ARM_VTABLE_STRLEN; + while (**mangled != '\0') + { + n = consume_count (mangled); + if (n == -1 + || n > (long) strlen (*mangled)) + return 0; + string_prependn (declp, *mangled, n); + (*mangled) += n; + if ((*mangled)[0] == '_' && (*mangled)[1] == '_') + { + string_prepend (declp, "::"); + (*mangled) += 2; + } + } + string_append (declp, " virtual table"); + } + else + { + success = 0; + } + return (success); +} + +/* + +LOCAL FUNCTION + + demangle_qualified -- demangle 'Q' qualified name strings + +SYNOPSIS + + static int + demangle_qualified (struct work_stuff *, const char *mangled, + string *result, int isfuncname, int append); + +DESCRIPTION + + Demangle a qualified name, such as "Q25Outer5Inner" which is + the mangled form of "Outer::Inner". The demangled output is + prepended or appended to the result string according to the + state of the append flag. + + If isfuncname is nonzero, then the qualified name we are building + is going to be used as a member function name, so if it is a + constructor or destructor function, append an appropriate + constructor or destructor name. I.E. for the above example, + the result for use as a constructor is "Outer::Inner::Inner" + and the result for use as a destructor is "Outer::Inner::~Inner". + +BUGS + + Numeric conversion is ASCII dependent (FIXME). + + */ + +static int +demangle_qualified (struct work_stuff *work, const char **mangled, + string *result, int isfuncname, int append) +{ + int qualifiers = 0; + int success = 1; + char num[2]; + string temp; + string last_name; + int bindex = register_Btype (work); + + /* We only make use of ISFUNCNAME if the entity is a constructor or + destructor. */ + isfuncname = (isfuncname + && ((work->constructor & 1) || (work->destructor & 1))); + + string_init (&temp); + string_init (&last_name); + + if ((*mangled)[0] == 'K') + { + /* Squangling qualified name reuse */ + int idx; + (*mangled)++; + idx = consume_count_with_underscores (mangled); + if (idx == -1 || idx >= work -> numk) + success = 0; + else + string_append (&temp, work -> ktypevec[idx]); + } + else + switch ((*mangled)[1]) + { + case '_': + /* GNU mangled name with more than 9 classes. The count is preceded + by an underscore (to distinguish it from the <= 9 case) and followed + by an underscore. */ + (*mangled)++; + qualifiers = consume_count_with_underscores (mangled); + if (qualifiers == -1) + success = 0; + break; + + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + /* The count is in a single digit. */ + num[0] = (*mangled)[1]; + num[1] = '\0'; + qualifiers = atoi (num); + + /* If there is an underscore after the digit, skip it. This is + said to be for ARM-qualified names, but the ARM makes no + mention of such an underscore. Perhaps cfront uses one. */ + if ((*mangled)[2] == '_') + { + (*mangled)++; + } + (*mangled) += 2; + break; + + case '0': + default: + success = 0; + } + + if (!success) + return success; + + /* Pick off the names and collect them in the temp buffer in the order + in which they are found, separated by '::'. */ + + while (qualifiers-- > 0) + { + int remember_K = 1; + string_clear (&last_name); + + if (*mangled[0] == '_') + (*mangled)++; + + if (*mangled[0] == 't') + { + /* Here we always append to TEMP since we will want to use + the template name without the template parameters as a + constructor or destructor name. The appropriate + (parameter-less) value is returned by demangle_template + in LAST_NAME. We do not remember the template type here, + in order to match the G++ mangling algorithm. */ + success = demangle_template(work, mangled, &temp, + &last_name, 1, 0); + if (!success) + break; + } + else if (*mangled[0] == 'K') + { + int idx; + (*mangled)++; + idx = consume_count_with_underscores (mangled); + if (idx == -1 || idx >= work->numk) + success = 0; + else + string_append (&temp, work->ktypevec[idx]); + remember_K = 0; + + if (!success) break; + } + else + { + if (EDG_DEMANGLING) + { + int namelength; + /* Now recursively demangle the qualifier + * This is necessary to deal with templates in + * mangling styles like EDG */ + namelength = consume_count (mangled); + if (namelength == -1) + { + success = 0; + break; + } + recursively_demangle(work, mangled, &temp, namelength); + } + else + { + string_delete (&last_name); + success = do_type (work, mangled, &last_name); + if (!success) + break; + string_appends (&temp, &last_name); + } + } + + if (remember_K) + remember_Ktype (work, temp.b, LEN_STRING (&temp)); + + if (qualifiers > 0) + string_append (&temp, SCOPE_STRING (work)); + } + + remember_Btype (work, temp.b, LEN_STRING (&temp), bindex); + + /* If we are using the result as a function name, we need to append + the appropriate '::' separated constructor or destructor name. + We do this here because this is the most convenient place, where + we already have a pointer to the name and the length of the name. */ + + if (isfuncname) + { + string_append (&temp, SCOPE_STRING (work)); + if (work -> destructor & 1) + string_append (&temp, "~"); + string_appends (&temp, &last_name); + } + + /* Now either prepend the temp buffer to the result, or append it, + depending upon the state of the append flag. */ + + if (append) + string_appends (result, &temp); + else + { + if (!STRING_EMPTY (result)) + string_append (&temp, SCOPE_STRING (work)); + string_prepends (result, &temp); + } + + string_delete (&last_name); + string_delete (&temp); + return (success); +} + +/* + +LOCAL FUNCTION + + get_count -- convert an ascii count to integer, consuming tokens + +SYNOPSIS + + static int + get_count (const char **type, int *count) + +DESCRIPTION + + Assume that *type points at a count in a mangled name; set + *count to its value, and set *type to the next character after + the count. There are some weird rules in effect here. + + If *type does not point at a string of digits, return zero. + + If *type points at a string of digits followed by an + underscore, set *count to their value as an integer, advance + *type to point *after the underscore, and return 1. + + If *type points at a string of digits not followed by an + underscore, consume only the first digit. Set *count to its + value as an integer, leave *type pointing after that digit, + and return 1. + + The excuse for this odd behavior: in the ARM and HP demangling + styles, a type can be followed by a repeat count of the form + `Nxy', where: + + `x' is a single digit specifying how many additional copies + of the type to append to the argument list, and + + `y' is one or more digits, specifying the zero-based index of + the first repeated argument in the list. Yes, as you're + unmangling the name you can figure this out yourself, but + it's there anyway. + + So, for example, in `bar__3fooFPiN51', the first argument is a + pointer to an integer (`Pi'), and then the next five arguments + are the same (`N5'), and the first repeat is the function's + second argument (`1'). +*/ + +static int +get_count (const char **type, int *count) +{ + const char *p; + int n; + + if (!ISDIGIT ((unsigned char)**type)) + return (0); + else + { + *count = **type - '0'; + (*type)++; + if (ISDIGIT ((unsigned char)**type)) + { + p = *type; + n = *count; + do + { + n *= 10; + n += *p - '0'; + p++; + } + while (ISDIGIT ((unsigned char)*p)); + if (*p == '_') + { + *type = p + 1; + *count = n; + } + } + } + return (1); +} + +/* RESULT will be initialised here; it will be freed on failure. The + value returned is really a type_kind_t. */ + +static int +do_type (struct work_stuff *work, const char **mangled, string *result) +{ + int n; + int done; + int success; + string decl; + const char *remembered_type; + int type_quals; + type_kind_t tk = tk_none; + + string_init (&decl); + string_init (result); + + done = 0; + success = 1; + while (success && !done) + { + int member; + switch (**mangled) + { + + /* A pointer type */ + case 'P': + case 'p': + (*mangled)++; + if (! (work -> options & DMGL_JAVA)) + string_prepend (&decl, "*"); + if (tk == tk_none) + tk = tk_pointer; + break; + + /* A reference type */ + case 'R': + (*mangled)++; + string_prepend (&decl, "&"); + if (tk == tk_none) + tk = tk_reference; + break; + + /* An array */ + case 'A': + { + ++(*mangled); + if (!STRING_EMPTY (&decl) + && (decl.b[0] == '*' || decl.b[0] == '&')) + { + string_prepend (&decl, "("); + string_append (&decl, ")"); + } + string_append (&decl, "["); + if (**mangled != '_') + success = demangle_template_value_parm (work, mangled, &decl, + tk_integral); + if (**mangled == '_') + ++(*mangled); + string_append (&decl, "]"); + break; + } + + /* A back reference to a previously seen type */ + case 'T': + (*mangled)++; + if (!get_count (mangled, &n) || n >= work -> ntypes) + { + success = 0; + } + else + { + remembered_type = work -> typevec[n]; + mangled = &remembered_type; + } + break; + + /* A function */ + case 'F': + (*mangled)++; + if (!STRING_EMPTY (&decl) + && (decl.b[0] == '*' || decl.b[0] == '&')) + { + string_prepend (&decl, "("); + string_append (&decl, ")"); + } + /* After picking off the function args, we expect to either find the + function return type (preceded by an '_') or the end of the + string. */ + if (!demangle_nested_args (work, mangled, &decl) + || (**mangled != '_' && **mangled != '\0')) + { + success = 0; + break; + } + if (success && (**mangled == '_')) + (*mangled)++; + break; + + case 'M': + case 'O': + { + type_quals = TYPE_UNQUALIFIED; + + member = **mangled == 'M'; + (*mangled)++; + + string_append (&decl, ")"); + + /* We don't need to prepend `::' for a qualified name; + demangle_qualified will do that for us. */ + if (**mangled != 'Q') + string_prepend (&decl, SCOPE_STRING (work)); + + if (ISDIGIT ((unsigned char)**mangled)) + { + n = consume_count (mangled); + if (n == -1 + || (int) strlen (*mangled) < n) + { + success = 0; + break; + } + string_prependn (&decl, *mangled, n); + *mangled += n; + } + else if (**mangled == 'X' || **mangled == 'Y') + { + string temp; + do_type (work, mangled, &temp); + string_prepends (&decl, &temp); + string_delete (&temp); + } + else if (**mangled == 't') + { + string temp; + string_init (&temp); + success = demangle_template (work, mangled, &temp, + NULL, 1, 1); + if (success) + { + string_prependn (&decl, temp.b, temp.p - temp.b); + string_delete (&temp); + } + else + break; + } + else if (**mangled == 'Q') + { + success = demangle_qualified (work, mangled, &decl, + /*isfuncnam=*/0, + /*append=*/0); + if (!success) + break; + } + else + { + success = 0; + break; + } + + string_prepend (&decl, "("); + if (member) + { + switch (**mangled) + { + case 'C': + case 'V': + case 'u': + type_quals |= code_for_qualifier (**mangled); + (*mangled)++; + break; + + default: + break; + } + + if (*(*mangled)++ != 'F') + { + success = 0; + break; + } + } + if ((member && !demangle_nested_args (work, mangled, &decl)) + || **mangled != '_') + { + success = 0; + break; + } + (*mangled)++; + if (! PRINT_ANSI_QUALIFIERS) + { + break; + } + if (type_quals != TYPE_UNQUALIFIED) + { + APPEND_BLANK (&decl); + string_append (&decl, qualifier_string (type_quals)); + } + break; + } + case 'G': + (*mangled)++; + break; + + case 'C': + case 'V': + case 'u': + if (PRINT_ANSI_QUALIFIERS) + { + if (!STRING_EMPTY (&decl)) + string_prepend (&decl, " "); + + string_prepend (&decl, demangle_qualifier (**mangled)); + } + (*mangled)++; + break; + /* + } + */ + + /* fall through */ + default: + done = 1; + break; + } + } + + if (success) switch (**mangled) + { + /* A qualified name, such as "Outer::Inner". */ + case 'Q': + case 'K': + { + success = demangle_qualified (work, mangled, result, 0, 1); + break; + } + + /* A back reference to a previously seen squangled type */ + case 'B': + (*mangled)++; + if (!get_count (mangled, &n) || n >= work -> numb) + success = 0; + else + string_append (result, work->btypevec[n]); + break; + + case 'X': + case 'Y': + /* A template parm. We substitute the corresponding argument. */ + { + int idx; + + (*mangled)++; + idx = consume_count_with_underscores (mangled); + + if (idx == -1 + || (work->tmpl_argvec && idx >= work->ntmpl_args) + || consume_count_with_underscores (mangled) == -1) + { + success = 0; + break; + } + + if (work->tmpl_argvec) + string_append (result, work->tmpl_argvec[idx]); + else + string_append_template_idx (result, idx); + + success = 1; + } + break; + + default: + success = demangle_fund_type (work, mangled, result); + if (tk == tk_none) + tk = (type_kind_t) success; + break; + } + + if (success) + { + if (!STRING_EMPTY (&decl)) + { + string_append (result, " "); + string_appends (result, &decl); + } + } + else + string_delete (result); + string_delete (&decl); + + if (success) + /* Assume an integral type, if we're not sure. */ + return (int) ((tk == tk_none) ? tk_integral : tk); + else + return 0; +} + +/* Given a pointer to a type string that represents a fundamental type + argument (int, long, unsigned int, etc) in TYPE, a pointer to the + string in which the demangled output is being built in RESULT, and + the WORK structure, decode the types and add them to the result. + + For example: + + "Ci" => "const int" + "Sl" => "signed long" + "CUs" => "const unsigned short" + + The value returned is really a type_kind_t. */ + +static int +demangle_fund_type (struct work_stuff *work, + const char **mangled, string *result) +{ + int done = 0; + int success = 1; + char buf[INTBUF_SIZE + 5 /* 'int%u_t' */]; + unsigned int dec = 0; + type_kind_t tk = tk_integral; + + /* First pick off any type qualifiers. There can be more than one. */ + + while (!done) + { + switch (**mangled) + { + case 'C': + case 'V': + case 'u': + if (PRINT_ANSI_QUALIFIERS) + { + if (!STRING_EMPTY (result)) + string_prepend (result, " "); + string_prepend (result, demangle_qualifier (**mangled)); + } + (*mangled)++; + break; + case 'U': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "unsigned"); + break; + case 'S': /* signed char only */ + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "signed"); + break; + case 'J': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "__complex"); + break; + default: + done = 1; + break; + } + } + + /* Now pick off the fundamental type. There can be only one. */ + + switch (**mangled) + { + case '\0': + case '_': + break; + case 'v': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "void"); + break; + case 'x': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "long long"); + break; + case 'l': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "long"); + break; + case 'i': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "int"); + break; + case 's': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "short"); + break; + case 'b': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "bool"); + tk = tk_bool; + break; + case 'c': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "char"); + tk = tk_char; + break; + case 'w': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "wchar_t"); + tk = tk_char; + break; + case 'r': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "long double"); + tk = tk_real; + break; + case 'd': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "double"); + tk = tk_real; + break; + case 'f': + (*mangled)++; + APPEND_BLANK (result); + string_append (result, "float"); + tk = tk_real; + break; + case 'G': + (*mangled)++; + if (!ISDIGIT ((unsigned char)**mangled)) + { + success = 0; + break; + } + case 'I': + (*mangled)++; + if (**mangled == '_') + { + int i; + (*mangled)++; + for (i = 0; + i < (long) sizeof (buf) - 1 && **mangled && **mangled != '_'; + (*mangled)++, i++) + buf[i] = **mangled; + if (**mangled != '_') + { + success = 0; + break; + } + buf[i] = '\0'; + (*mangled)++; + } + else + { + strncpy (buf, *mangled, 2); + buf[2] = '\0'; + *mangled += min (strlen (*mangled), 2); + } + sscanf (buf, "%x", &dec); + sprintf (buf, "int%u_t", dec); + APPEND_BLANK (result); + string_append (result, buf); + break; + + /* fall through */ + /* An explicit type, such as "6mytype" or "7integer" */ + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + { + int bindex = register_Btype (work); + string btype; + string_init (&btype); + if (demangle_class_name (work, mangled, &btype)) { + remember_Btype (work, btype.b, LEN_STRING (&btype), bindex); + APPEND_BLANK (result); + string_appends (result, &btype); + } + else + success = 0; + string_delete (&btype); + break; + } + case 't': + { + string btype; + string_init (&btype); + success = demangle_template (work, mangled, &btype, 0, 1, 1); + string_appends (result, &btype); + string_delete (&btype); + break; + } + default: + success = 0; + break; + } + + return success ? ((int) tk) : 0; +} + + +/* Handle a template's value parameter for HP aCC (extension from ARM) + **mangled points to 'S' or 'U' */ + +static int +do_hpacc_template_const_value (struct work_stuff *work ATTRIBUTE_UNUSED, + const char **mangled, string *result) +{ + int unsigned_const; + + if (**mangled != 'U' && **mangled != 'S') + return 0; + + unsigned_const = (**mangled == 'U'); + + (*mangled)++; + + switch (**mangled) + { + case 'N': + string_append (result, "-"); + /* fall through */ + case 'P': + (*mangled)++; + break; + case 'M': + /* special case for -2^31 */ + string_append (result, "-2147483648"); + (*mangled)++; + return 1; + default: + return 0; + } + + /* We have to be looking at an integer now */ + if (!(ISDIGIT ((unsigned char)**mangled))) + return 0; + + /* We only deal with integral values for template + parameters -- so it's OK to look only for digits */ + while (ISDIGIT ((unsigned char)**mangled)) + { + char_str[0] = **mangled; + string_append (result, char_str); + (*mangled)++; + } + + if (unsigned_const) + string_append (result, "U"); + + /* FIXME? Some day we may have 64-bit (or larger :-) ) constants + with L or LL suffixes. pai/1997-09-03 */ + + return 1; /* success */ +} + +/* Handle a template's literal parameter for HP aCC (extension from ARM) + **mangled is pointing to the 'A' */ + +static int +do_hpacc_template_literal (struct work_stuff *work, const char **mangled, + string *result) +{ + int literal_len = 0; + char * recurse; + char * recurse_dem; + + if (**mangled != 'A') + return 0; + + (*mangled)++; + + literal_len = consume_count (mangled); + + if (literal_len <= 0) + return 0; + + /* Literal parameters are names of arrays, functions, etc. and the + canonical representation uses the address operator */ + string_append (result, "&"); + + /* Now recursively demangle the literal name */ + recurse = XNEWVEC (char, literal_len + 1); + memcpy (recurse, *mangled, literal_len); + recurse[literal_len] = '\000'; + + recurse_dem = cplus_demangle (recurse, work->options); + + if (recurse_dem) + { + string_append (result, recurse_dem); + free (recurse_dem); + } + else + { + string_appendn (result, *mangled, literal_len); + } + (*mangled) += literal_len; + free (recurse); + + return 1; +} + +static int +snarf_numeric_literal (const char **args, string *arg) +{ + if (**args == '-') + { + char_str[0] = '-'; + string_append (arg, char_str); + (*args)++; + } + else if (**args == '+') + (*args)++; + + if (!ISDIGIT ((unsigned char)**args)) + return 0; + + while (ISDIGIT ((unsigned char)**args)) + { + char_str[0] = **args; + string_append (arg, char_str); + (*args)++; + } + + return 1; +} + +/* Demangle the next argument, given by MANGLED into RESULT, which + *should be an uninitialized* string. It will be initialized here, + and free'd should anything go wrong. */ + +static int +do_arg (struct work_stuff *work, const char **mangled, string *result) +{ + /* Remember where we started so that we can record the type, for + non-squangling type remembering. */ + const char *start = *mangled; + + string_init (result); + + if (work->nrepeats > 0) + { + --work->nrepeats; + + if (work->previous_argument == 0) + return 0; + + /* We want to reissue the previous type in this argument list. */ + string_appends (result, work->previous_argument); + return 1; + } + + if (**mangled == 'n') + { + /* A squangling-style repeat. */ + (*mangled)++; + work->nrepeats = consume_count(mangled); + + if (work->nrepeats <= 0) + /* This was not a repeat count after all. */ + return 0; + + if (work->nrepeats > 9) + { + if (**mangled != '_') + /* The repeat count should be followed by an '_' in this + case. */ + return 0; + else + (*mangled)++; + } + + /* Now, the repeat is all set up. */ + return do_arg (work, mangled, result); + } + + /* Save the result in WORK->previous_argument so that we can find it + if it's repeated. Note that saving START is not good enough: we + do not want to add additional types to the back-referenceable + type vector when processing a repeated type. */ + if (work->previous_argument) + string_delete (work->previous_argument); + else + work->previous_argument = XNEW (string); + + if (!do_type (work, mangled, work->previous_argument)) + return 0; + + string_appends (result, work->previous_argument); + + remember_type (work, start, *mangled - start); + return 1; +} + +static void +remember_type (struct work_stuff *work, const char *start, int len) +{ + char *tem; + + if (work->forgetting_types) + return; + + if (work -> ntypes >= work -> typevec_size) + { + if (work -> typevec_size == 0) + { + work -> typevec_size = 3; + work -> typevec = XNEWVEC (char *, work->typevec_size); + } + else + { + work -> typevec_size *= 2; + work -> typevec + = XRESIZEVEC (char *, work->typevec, work->typevec_size); + } + } + tem = XNEWVEC (char, len + 1); + memcpy (tem, start, len); + tem[len] = '\0'; + work -> typevec[work -> ntypes++] = tem; +} + + +/* Remember a K type class qualifier. */ +static void +remember_Ktype (struct work_stuff *work, const char *start, int len) +{ + char *tem; + + if (work -> numk >= work -> ksize) + { + if (work -> ksize == 0) + { + work -> ksize = 5; + work -> ktypevec = XNEWVEC (char *, work->ksize); + } + else + { + work -> ksize *= 2; + work -> ktypevec + = XRESIZEVEC (char *, work->ktypevec, work->ksize); + } + } + tem = XNEWVEC (char, len + 1); + memcpy (tem, start, len); + tem[len] = '\0'; + work -> ktypevec[work -> numk++] = tem; +} + +/* Register a B code, and get an index for it. B codes are registered + as they are seen, rather than as they are completed, so map<temp<char> > + registers map<temp<char> > as B0, and temp<char> as B1 */ + +static int +register_Btype (struct work_stuff *work) +{ + int ret; + + if (work -> numb >= work -> bsize) + { + if (work -> bsize == 0) + { + work -> bsize = 5; + work -> btypevec = XNEWVEC (char *, work->bsize); + } + else + { + work -> bsize *= 2; + work -> btypevec + = XRESIZEVEC (char *, work->btypevec, work->bsize); + } + } + ret = work -> numb++; + work -> btypevec[ret] = NULL; + return(ret); +} + +/* Store a value into a previously registered B code type. */ + +static void +remember_Btype (struct work_stuff *work, const char *start, + int len, int index) +{ + char *tem; + + tem = XNEWVEC (char, len + 1); + memcpy (tem, start, len); + tem[len] = '\0'; + work -> btypevec[index] = tem; +} + +/* Lose all the info related to B and K type codes. */ +static void +forget_B_and_K_types (struct work_stuff *work) +{ + int i; + + while (work -> numk > 0) + { + i = --(work -> numk); + if (work -> ktypevec[i] != NULL) + { + free (work -> ktypevec[i]); + work -> ktypevec[i] = NULL; + } + } + + while (work -> numb > 0) + { + i = --(work -> numb); + if (work -> btypevec[i] != NULL) + { + free (work -> btypevec[i]); + work -> btypevec[i] = NULL; + } + } +} +/* Forget the remembered types, but not the type vector itself. */ + +static void +forget_types (struct work_stuff *work) +{ + int i; + + while (work -> ntypes > 0) + { + i = --(work -> ntypes); + if (work -> typevec[i] != NULL) + { + free (work -> typevec[i]); + work -> typevec[i] = NULL; + } + } +} + +/* Process the argument list part of the signature, after any class spec + has been consumed, as well as the first 'F' character (if any). For + example: + + "__als__3fooRT0" => process "RT0" + "complexfunc5__FPFPc_PFl_i" => process "PFPc_PFl_i" + + DECLP must be already initialised, usually non-empty. It won't be freed + on failure. + + Note that g++ differs significantly from ARM and lucid style mangling + with regards to references to previously seen types. For example, given + the source fragment: + + class foo { + public: + foo::foo (int, foo &ia, int, foo &ib, int, foo &ic); + }; + + foo::foo (int, foo &ia, int, foo &ib, int, foo &ic) { ia = ib = ic; } + void foo (int, foo &ia, int, foo &ib, int, foo &ic) { ia = ib = ic; } + + g++ produces the names: + + __3fooiRT0iT2iT2 + foo__FiR3fooiT1iT1 + + while lcc (and presumably other ARM style compilers as well) produces: + + foo__FiR3fooT1T2T1T2 + __ct__3fooFiR3fooT1T2T1T2 + + Note that g++ bases its type numbers starting at zero and counts all + previously seen types, while lucid/ARM bases its type numbers starting + at one and only considers types after it has seen the 'F' character + indicating the start of the function args. For lucid/ARM style, we + account for this difference by discarding any previously seen types when + we see the 'F' character, and subtracting one from the type number + reference. + + */ + +static int +demangle_args (struct work_stuff *work, const char **mangled, + string *declp) +{ + string arg; + int need_comma = 0; + int r; + int t; + const char *tem; + char temptype; + + if (PRINT_ARG_TYPES) + { + string_append (declp, "("); + if (**mangled == '\0') + { + string_append (declp, "void"); + } + } + + while ((**mangled != '_' && **mangled != '\0' && **mangled != 'e') + || work->nrepeats > 0) + { + if ((**mangled == 'N') || (**mangled == 'T')) + { + temptype = *(*mangled)++; + + if (temptype == 'N') + { + if (!get_count (mangled, &r)) + { + return (0); + } + } + else + { + r = 1; + } + if ((HP_DEMANGLING || ARM_DEMANGLING || EDG_DEMANGLING) && work -> ntypes >= 10) + { + /* If we have 10 or more types we might have more than a 1 digit + index so we'll have to consume the whole count here. This + will lose if the next thing is a type name preceded by a + count but it's impossible to demangle that case properly + anyway. Eg if we already have 12 types is T12Pc "(..., type1, + Pc, ...)" or "(..., type12, char *, ...)" */ + if ((t = consume_count(mangled)) <= 0) + { + return (0); + } + } + else + { + if (!get_count (mangled, &t)) + { + return (0); + } + } + if (LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) + { + t--; + } + /* Validate the type index. Protect against illegal indices from + malformed type strings. */ + if ((t < 0) || (t >= work -> ntypes)) + { + return (0); + } + while (work->nrepeats > 0 || --r >= 0) + { + tem = work -> typevec[t]; + if (need_comma && PRINT_ARG_TYPES) + { + string_append (declp, ", "); + } + if (!do_arg (work, &tem, &arg)) + { + return (0); + } + if (PRINT_ARG_TYPES) + { + string_appends (declp, &arg); + } + string_delete (&arg); + need_comma = 1; + } + } + else + { + if (need_comma && PRINT_ARG_TYPES) + string_append (declp, ", "); + if (!do_arg (work, mangled, &arg)) + return (0); + if (PRINT_ARG_TYPES) + string_appends (declp, &arg); + string_delete (&arg); + need_comma = 1; + } + } + + if (**mangled == 'e') + { + (*mangled)++; + if (PRINT_ARG_TYPES) + { + if (need_comma) + { + string_append (declp, ","); + } + string_append (declp, "..."); + } + } + + if (PRINT_ARG_TYPES) + { + string_append (declp, ")"); + } + return (1); +} + +/* Like demangle_args, but for demangling the argument lists of function + and method pointers or references, not top-level declarations. */ + +static int +demangle_nested_args (struct work_stuff *work, const char **mangled, + string *declp) +{ + string* saved_previous_argument; + int result; + int saved_nrepeats; + + /* The G++ name-mangling algorithm does not remember types on nested + argument lists, unless -fsquangling is used, and in that case the + type vector updated by remember_type is not used. So, we turn + off remembering of types here. */ + ++work->forgetting_types; + + /* For the repeat codes used with -fsquangling, we must keep track of + the last argument. */ + saved_previous_argument = work->previous_argument; + saved_nrepeats = work->nrepeats; + work->previous_argument = 0; + work->nrepeats = 0; + + /* Actually demangle the arguments. */ + result = demangle_args (work, mangled, declp); + + /* Restore the previous_argument field. */ + if (work->previous_argument) + { + string_delete (work->previous_argument); + free ((char *) work->previous_argument); + } + work->previous_argument = saved_previous_argument; + --work->forgetting_types; + work->nrepeats = saved_nrepeats; + + return result; +} + +static void +demangle_function_name (struct work_stuff *work, const char **mangled, + string *declp, const char *scan) +{ + size_t i; + string type; + const char *tem; + + string_appendn (declp, (*mangled), scan - (*mangled)); + string_need (declp, 1); + *(declp -> p) = '\0'; + + /* Consume the function name, including the "__" separating the name + from the signature. We are guaranteed that SCAN points to the + separator. */ + + (*mangled) = scan + 2; + /* We may be looking at an instantiation of a template function: + foo__Xt1t2_Ft3t4, where t1, t2, ... are template arguments and a + following _F marks the start of the function arguments. Handle + the template arguments first. */ + + if (HP_DEMANGLING && (**mangled == 'X')) + { + demangle_arm_hp_template (work, mangled, 0, declp); + /* This leaves MANGLED pointing to the 'F' marking func args */ + } + + if (LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) + { + + /* See if we have an ARM style constructor or destructor operator. + If so, then just record it, clear the decl, and return. + We can't build the actual constructor/destructor decl until later, + when we recover the class name from the signature. */ + + if (strcmp (declp -> b, "__ct") == 0) + { + work -> constructor += 1; + string_clear (declp); + return; + } + else if (strcmp (declp -> b, "__dt") == 0) + { + work -> destructor += 1; + string_clear (declp); + return; + } + } + + if (declp->p - declp->b >= 3 + && declp->b[0] == 'o' + && declp->b[1] == 'p' + && strchr (cplus_markers, declp->b[2]) != NULL) + { + /* see if it's an assignment expression */ + if (declp->p - declp->b >= 10 /* op$assign_ */ + && memcmp (declp->b + 3, "assign_", 7) == 0) + { + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + int len = declp->p - declp->b - 10; + if ((int) strlen (optable[i].in) == len + && memcmp (optable[i].in, declp->b + 10, len) == 0) + { + string_clear (declp); + string_append (declp, "operator"); + string_append (declp, optable[i].out); + string_append (declp, "="); + break; + } + } + } + else + { + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + int len = declp->p - declp->b - 3; + if ((int) strlen (optable[i].in) == len + && memcmp (optable[i].in, declp->b + 3, len) == 0) + { + string_clear (declp); + string_append (declp, "operator"); + string_append (declp, optable[i].out); + break; + } + } + } + } + else if (declp->p - declp->b >= 5 && memcmp (declp->b, "type", 4) == 0 + && strchr (cplus_markers, declp->b[4]) != NULL) + { + /* type conversion operator */ + tem = declp->b + 5; + if (do_type (work, &tem, &type)) + { + string_clear (declp); + string_append (declp, "operator "); + string_appends (declp, &type); + string_delete (&type); + } + } + else if (declp->b[0] == '_' && declp->b[1] == '_' + && declp->b[2] == 'o' && declp->b[3] == 'p') + { + /* ANSI. */ + /* type conversion operator. */ + tem = declp->b + 4; + if (do_type (work, &tem, &type)) + { + string_clear (declp); + string_append (declp, "operator "); + string_appends (declp, &type); + string_delete (&type); + } + } + else if (declp->b[0] == '_' && declp->b[1] == '_' + && ISLOWER((unsigned char)declp->b[2]) + && ISLOWER((unsigned char)declp->b[3])) + { + if (declp->b[4] == '\0') + { + /* Operator. */ + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + if (strlen (optable[i].in) == 2 + && memcmp (optable[i].in, declp->b + 2, 2) == 0) + { + string_clear (declp); + string_append (declp, "operator"); + string_append (declp, optable[i].out); + break; + } + } + } + else + { + if (declp->b[2] == 'a' && declp->b[5] == '\0') + { + /* Assignment. */ + for (i = 0; i < ARRAY_SIZE (optable); i++) + { + if (strlen (optable[i].in) == 3 + && memcmp (optable[i].in, declp->b + 2, 3) == 0) + { + string_clear (declp); + string_append (declp, "operator"); + string_append (declp, optable[i].out); + break; + } + } + } + } + } +} + +/* a mini string-handling package */ + +static void +string_need (string *s, int n) +{ + int tem; + + if (s->b == NULL) + { + if (n < 32) + { + n = 32; + } + s->p = s->b = XNEWVEC (char, n); + s->e = s->b + n; + } + else if (s->e - s->p < n) + { + tem = s->p - s->b; + n += tem; + n *= 2; + s->b = XRESIZEVEC (char, s->b, n); + s->p = s->b + tem; + s->e = s->b + n; + } +} + +static void +string_delete (string *s) +{ + if (s->b != NULL) + { + free (s->b); + s->b = s->e = s->p = NULL; + } +} + +static void +string_init (string *s) +{ + s->b = s->p = s->e = NULL; +} + +static void +string_clear (string *s) +{ + s->p = s->b; +} + +#if 0 + +static int +string_empty (string *s) +{ + return (s->b == s->p); +} + +#endif + +static void +string_append (string *p, const char *s) +{ + int n; + if (s == NULL || *s == '\0') + return; + n = strlen (s); + string_need (p, n); + memcpy (p->p, s, n); + p->p += n; +} + +static void +string_appends (string *p, string *s) +{ + int n; + + if (s->b != s->p) + { + n = s->p - s->b; + string_need (p, n); + memcpy (p->p, s->b, n); + p->p += n; + } +} + +static void +string_appendn (string *p, const char *s, int n) +{ + if (n != 0) + { + string_need (p, n); + memcpy (p->p, s, n); + p->p += n; + } +} + +static void +string_prepend (string *p, const char *s) +{ + if (s != NULL && *s != '\0') + { + string_prependn (p, s, strlen (s)); + } +} + +static void +string_prepends (string *p, string *s) +{ + if (s->b != s->p) + { + string_prependn (p, s->b, s->p - s->b); + } +} + +static void +string_prependn (string *p, const char *s, int n) +{ + char *q; + + if (n != 0) + { + string_need (p, n); + for (q = p->p - 1; q >= p->b; q--) + { + q[n] = q[0]; + } + memcpy (p->b, s, n); + p->p += n; + } +} + +static void +string_append_template_idx (string *s, int idx) +{ + char buf[INTBUF_SIZE + 1 /* 'T' */]; + sprintf(buf, "T%d", idx); + string_append (s, buf); +} |