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Diffstat (limited to 'third_party/gcc_demangler.c')
| -rw-r--r-- | third_party/gcc_demangler.c | 4218 |
1 files changed, 4218 insertions, 0 deletions
diff --git a/third_party/gcc_demangler.c b/third_party/gcc_demangler.c new file mode 100644 index 00000000..6cfbb19e --- /dev/null +++ b/third_party/gcc_demangler.c @@ -0,0 +1,4218 @@ +#include <string.h> +#include <stdlib.h> + +/* Demangler for g++ V3 ABI. + Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. + Written by Ian Lance Taylor <ian@wasabisystems.com>. + + This file is part of the libiberty library, which is part of GCC. + + This file is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + In addition to the permissions in the GNU 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 General 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.) + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. +*/ + +/* This code implements a demangler for the g++ V3 ABI. The ABI is + described on this web page: + http://www.codesourcery.com/cxx-abi/abi.html#mangling + + This code was written while looking at the demangler written by + Alex Samuel <samuel@codesourcery.com>. + + This code first pulls the mangled name apart into a list of + components, and then walks the list generating the demangled + name. + + This file will normally define the following functions, q.v.: + char *cplus_demangle_v3(const char *mangled, int options) + char *java_demangle_v3(const char *mangled) + enum gnu_v3_ctor_kinds is_gnu_v3_mangled_ctor (const char *name) + enum gnu_v3_dtor_kinds is_gnu_v3_mangled_dtor (const char *name) + + Also, the interface to the component list is public, and defined in + demangle.h. The interface consists of these types, which are + defined in demangle.h: + enum demangle_component_type + struct demangle_component + and these functions defined in this file: + cplus_demangle_fill_name + cplus_demangle_fill_extended_operator + cplus_demangle_fill_ctor + cplus_demangle_fill_dtor + cplus_demangle_print + and other functions defined in the file cp-demint.c. + + This file also defines some other functions and variables which are + only to be used by the file cp-demint.c. + + Preprocessor macros you can define while compiling this file: + + IN_LIBGCC2 + If defined, this file defines the following function, q.v.: + char *__cxa_demangle (const char *mangled, char *buf, size_t *len, + int *status) + instead of cplus_demangle_v3() and java_demangle_v3(). + + IN_GLIBCPP_V3 + If defined, this file defines only __cxa_demangle(), and no other + publically visible functions or variables. + + STANDALONE_DEMANGLER + If defined, this file defines a main() function which demangles + any arguments, or, if none, demangles stdin. + + CP_DEMANGLE_DEBUG + If defined, turns on debugging mode, which prints information on + stdout about the mangled string. This is not generally useful. +*/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <stdio.h> + +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif + +#include "ansidecl.h" +#include "libiberty.h" +#include "demangle.h" +#include "cp-demangle.h" + +/* If IN_GLIBCPP_V3 is defined, some functions are made static. We + also rename them via #define to avoid compiler errors when the + static definition conflicts with the extern declaration in a header + file. */ +#ifdef IN_GLIBCPP_V3 + +#define CP_STATIC_IF_GLIBCPP_V3 static + +#define cplus_demangle_fill_name d_fill_name +static int d_fill_name (struct demangle_component *, const char *, int); + +#define cplus_demangle_fill_extended_operator d_fill_extended_operator +static int +d_fill_extended_operator (struct demangle_component *, int, + struct demangle_component *); + +#define cplus_demangle_fill_ctor d_fill_ctor +static int +d_fill_ctor (struct demangle_component *, enum gnu_v3_ctor_kinds, + struct demangle_component *); + +#define cplus_demangle_fill_dtor d_fill_dtor +static int +d_fill_dtor (struct demangle_component *, enum gnu_v3_dtor_kinds, + struct demangle_component *); + +#define cplus_demangle_mangled_name d_mangled_name +static struct demangle_component *d_mangled_name (struct d_info *, int); + +#define cplus_demangle_type d_type +static struct demangle_component *d_type (struct d_info *); + +#define cplus_demangle_print d_print +static char *d_print (int, const struct demangle_component *, int, size_t *); + +#define cplus_demangle_init_info d_init_info +static void d_init_info (const char *, int, size_t, struct d_info *); + +#else /* ! defined(IN_GLIBCPP_V3) */ +#define CP_STATIC_IF_GLIBCPP_V3 +#endif /* ! defined(IN_GLIBCPP_V3) */ + +/* See if the compiler supports dynamic arrays. */ + +#ifdef __GNUC__ +#define CP_DYNAMIC_ARRAYS +#else +#ifdef __STDC__ +#ifdef __STDC_VERSION__ +#if __STDC_VERSION__ >= 199901L +#define CP_DYNAMIC_ARRAYS +#endif /* __STDC__VERSION >= 199901L */ +#endif /* defined (__STDC_VERSION__) */ +#endif /* defined (__STDC__) */ +#endif /* ! defined (__GNUC__) */ + +/* We avoid pulling in the ctype tables, to prevent pulling in + additional unresolved symbols when this code is used in a library. + FIXME: Is this really a valid reason? This comes from the original + V3 demangler code. + + As of this writing this file has the following undefined references + when compiled with -DIN_GLIBCPP_V3: malloc, realloc, free, memcpy, + strcpy, strcat, strlen. */ + +#define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') +#define IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z') +#define IS_LOWER(c) ((c) >= 'a' && (c) <= 'z') + +/* The prefix prepended by GCC to an identifier represnting the + anonymous namespace. */ +#define ANONYMOUS_NAMESPACE_PREFIX "_GLOBAL_" +#define ANONYMOUS_NAMESPACE_PREFIX_LEN \ + (sizeof (ANONYMOUS_NAMESPACE_PREFIX) - 1) + +/* Information we keep for the standard substitutions. */ + +struct d_standard_sub_info +{ + /* The code for this substitution. */ + char code; + /* The simple string it expands to. */ + const char *simple_expansion; + /* The length of the simple expansion. */ + int simple_len; + /* The results of a full, verbose, expansion. This is used when + qualifying a constructor/destructor, or when in verbose mode. */ + const char *full_expansion; + /* The length of the full expansion. */ + int full_len; + /* What to set the last_name field of d_info to; NULL if we should + not set it. This is only relevant when qualifying a + constructor/destructor. */ + const char *set_last_name; + /* The length of set_last_name. */ + int set_last_name_len; +}; + +/* Accessors for subtrees of struct demangle_component. */ + +#define d_left(dc) ((dc)->u.s_binary.left) +#define d_right(dc) ((dc)->u.s_binary.right) + +/* A list of templates. This is used while printing. */ + +struct d_print_template +{ + /* Next template on the list. */ + struct d_print_template *next; + /* This template. */ + const struct demangle_component *template_decl; +}; + +/* A list of type modifiers. This is used while printing. */ + +struct d_print_mod +{ + /* Next modifier on the list. These are in the reverse of the order + in which they appeared in the mangled string. */ + struct d_print_mod *next; + /* The modifier. */ + const struct demangle_component *mod; + /* Whether this modifier was printed. */ + int printed; + /* The list of templates which applies to this modifier. */ + struct d_print_template *templates; +}; + +/* We use this structure to hold information during printing. */ + +struct d_print_info +{ + /* The options passed to the demangler. */ + int options; + /* Buffer holding the result. */ + char *buf; + /* Current length of data in buffer. */ + size_t len; + /* Allocated size of buffer. */ + size_t alc; + /* The current list of templates, if any. */ + struct d_print_template *templates; + /* The current list of modifiers (e.g., pointer, reference, etc.), + if any. */ + struct d_print_mod *modifiers; + /* Set to 1 if we had a memory allocation failure. */ + int allocation_failure; +}; + +#define d_print_saw_error(dpi) ((dpi)->buf == NULL) + +#define d_append_char(dpi, c) \ + do \ + { \ + if ((dpi)->buf != NULL && (dpi)->len < (dpi)->alc) \ + (dpi)->buf[(dpi)->len++] = (c); \ + else \ + d_print_append_char ((dpi), (c)); \ + } \ + while (0) + +#define d_append_buffer(dpi, s, l) \ + do \ + { \ + if ((dpi)->buf != NULL && (dpi)->len + (l) <= (dpi)->alc) \ + { \ + memcpy ((dpi)->buf + (dpi)->len, (s), (l)); \ + (dpi)->len += l; \ + } \ + else \ + d_print_append_buffer ((dpi), (s), (l)); \ + } \ + while (0) + +#define d_append_string_constant(dpi, s) \ + d_append_buffer (dpi, (s), sizeof (s) - 1) + +#define d_last_char(dpi) \ + ((dpi)->buf == NULL || (dpi)->len == 0 ? '\0' : (dpi)->buf[(dpi)->len - 1]) + +#ifdef CP_DEMANGLE_DEBUG +static void d_dump (struct demangle_component *, int); +#endif + +static struct demangle_component * +d_make_empty (struct d_info *); + +static struct demangle_component * +d_make_comp (struct d_info *, enum demangle_component_type, + struct demangle_component *, + struct demangle_component *); + +static struct demangle_component * +d_make_name (struct d_info *, const char *, int); + +static struct demangle_component * +d_make_builtin_type (struct d_info *, + const struct demangle_builtin_type_info *); + +static struct demangle_component * +d_make_operator (struct d_info *, + const struct demangle_operator_info *); + +static struct demangle_component * +d_make_extended_operator (struct d_info *, int, + struct demangle_component *); + +static struct demangle_component * +d_make_ctor (struct d_info *, enum gnu_v3_ctor_kinds, + struct demangle_component *); + +static struct demangle_component * +d_make_dtor (struct d_info *, enum gnu_v3_dtor_kinds, + struct demangle_component *); + +static struct demangle_component * +d_make_template_param (struct d_info *, long); + +static struct demangle_component * +d_make_sub (struct d_info *, const char *, int); + +static int +has_return_type (struct demangle_component *); + +static int +is_ctor_dtor_or_conversion (struct demangle_component *); + +static struct demangle_component *d_encoding (struct d_info *, int); + +static struct demangle_component *d_name (struct d_info *); + +static struct demangle_component *d_nested_name (struct d_info *); + +static struct demangle_component *d_prefix (struct d_info *); + +static struct demangle_component *d_unqualified_name (struct d_info *); + +static struct demangle_component *d_source_name (struct d_info *); + +static long d_number (struct d_info *); + +static struct demangle_component *d_identifier (struct d_info *, int); + +static struct demangle_component *d_operator_name (struct d_info *); + +static struct demangle_component *d_special_name (struct d_info *); + +static int d_call_offset (struct d_info *, int); + +static struct demangle_component *d_ctor_dtor_name (struct d_info *); + +static struct demangle_component ** +d_cv_qualifiers (struct d_info *, struct demangle_component **, int); + +static struct demangle_component * +d_function_type (struct d_info *); + +static struct demangle_component * +d_bare_function_type (struct d_info *, int); + +static struct demangle_component * +d_class_enum_type (struct d_info *); + +static struct demangle_component *d_array_type (struct d_info *); + +static struct demangle_component * +d_pointer_to_member_type (struct d_info *); + +static struct demangle_component * +d_template_param (struct d_info *); + +static struct demangle_component *d_template_args (struct d_info *); + +static struct demangle_component * +d_template_arg (struct d_info *); + +static struct demangle_component *d_expression (struct d_info *); + +static struct demangle_component *d_expr_primary (struct d_info *); + +static struct demangle_component *d_local_name (struct d_info *); + +static int d_discriminator (struct d_info *); + +static int +d_add_substitution (struct d_info *, struct demangle_component *); + +static struct demangle_component *d_substitution (struct d_info *, int); + +static void d_print_resize (struct d_print_info *, size_t); + +static void d_print_append_char (struct d_print_info *, int); + +static void +d_print_append_buffer (struct d_print_info *, const char *, size_t); + +static void d_print_error (struct d_print_info *); + +static void +d_print_comp (struct d_print_info *, const struct demangle_component *); + +static void +d_print_java_identifier (struct d_print_info *, const char *, int); + +static void +d_print_mod_list (struct d_print_info *, struct d_print_mod *, int); + +static void +d_print_mod (struct d_print_info *, const struct demangle_component *); + +static void +d_print_function_type (struct d_print_info *, + const struct demangle_component *, + struct d_print_mod *); + +static void +d_print_array_type (struct d_print_info *, + const struct demangle_component *, + struct d_print_mod *); + +static void +d_print_expr_op (struct d_print_info *, const struct demangle_component *); + +static void +d_print_cast (struct d_print_info *, const struct demangle_component *); + +static char *d_demangle (const char *, int, size_t *); + +#ifdef CP_DEMANGLE_DEBUG + +static void +d_dump (struct demangle_component *dc, int indent) +{ + int i; + + if (dc == NULL) + return; + + for (i = 0; i < indent; ++i) + putchar (' '); + + switch (dc->type) + { + case DEMANGLE_COMPONENT_NAME: + printf ("name '%.*s'\n", dc->u.s_name.len, dc->u.s_name.s); + return; + case DEMANGLE_COMPONENT_TEMPLATE_PARAM: + printf ("template parameter %ld\n", dc->u.s_number.number); + return; + case DEMANGLE_COMPONENT_CTOR: + printf ("constructor %d\n", (int) dc->u.s_ctor.kind); + d_dump (dc->u.s_ctor.name, indent + 2); + return; + case DEMANGLE_COMPONENT_DTOR: + printf ("destructor %d\n", (int) dc->u.s_dtor.kind); + d_dump (dc->u.s_dtor.name, indent + 2); + return; + case DEMANGLE_COMPONENT_SUB_STD: + printf ("standard substitution %s\n", dc->u.s_string.string); + return; + case DEMANGLE_COMPONENT_BUILTIN_TYPE: + printf ("builtin type %s\n", dc->u.s_builtin.type->name); + return; + case DEMANGLE_COMPONENT_OPERATOR: + printf ("operator %s\n", dc->u.s_operator.op->name); + return; + case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: + printf ("extended operator with %d args\n", + dc->u.s_extended_operator.args); + d_dump (dc->u.s_extended_operator.name, indent + 2); + return; + + case DEMANGLE_COMPONENT_QUAL_NAME: + printf ("qualified name\n"); + break; + case DEMANGLE_COMPONENT_LOCAL_NAME: + printf ("local name\n"); + break; + case DEMANGLE_COMPONENT_TYPED_NAME: + printf ("typed name\n"); + break; + case DEMANGLE_COMPONENT_TEMPLATE: + printf ("template\n"); + break; + case DEMANGLE_COMPONENT_VTABLE: + printf ("vtable\n"); + break; + case DEMANGLE_COMPONENT_VTT: + printf ("VTT\n"); + break; + case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE: + printf ("construction vtable\n"); + break; + case DEMANGLE_COMPONENT_TYPEINFO: + printf ("typeinfo\n"); + break; + case DEMANGLE_COMPONENT_TYPEINFO_NAME: + printf ("typeinfo name\n"); + break; + case DEMANGLE_COMPONENT_TYPEINFO_FN: + printf ("typeinfo function\n"); + break; + case DEMANGLE_COMPONENT_THUNK: + printf ("thunk\n"); + break; + case DEMANGLE_COMPONENT_VIRTUAL_THUNK: + printf ("virtual thunk\n"); + break; + case DEMANGLE_COMPONENT_COVARIANT_THUNK: + printf ("covariant thunk\n"); + break; + case DEMANGLE_COMPONENT_JAVA_CLASS: + printf ("java class\n"); + break; + case DEMANGLE_COMPONENT_GUARD: + printf ("guard\n"); + break; + case DEMANGLE_COMPONENT_REFTEMP: + printf ("reference temporary\n"); + break; + case DEMANGLE_COMPONENT_HIDDEN_ALIAS: + printf ("hidden alias\n"); + break; + case DEMANGLE_COMPONENT_RESTRICT: + printf ("restrict\n"); + break; + case DEMANGLE_COMPONENT_VOLATILE: + printf ("volatile\n"); + break; + case DEMANGLE_COMPONENT_CONST: + printf ("const\n"); + break; + case DEMANGLE_COMPONENT_RESTRICT_THIS: + printf ("restrict this\n"); + break; + case DEMANGLE_COMPONENT_VOLATILE_THIS: + printf ("volatile this\n"); + break; + case DEMANGLE_COMPONENT_CONST_THIS: + printf ("const this\n"); + break; + case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: + printf ("vendor type qualifier\n"); + break; + case DEMANGLE_COMPONENT_POINTER: + printf ("pointer\n"); + break; + case DEMANGLE_COMPONENT_REFERENCE: + printf ("reference\n"); + break; + case DEMANGLE_COMPONENT_COMPLEX: + printf ("complex\n"); + break; + case DEMANGLE_COMPONENT_IMAGINARY: + printf ("imaginary\n"); + break; + case DEMANGLE_COMPONENT_VENDOR_TYPE: + printf ("vendor type\n"); + break; + case DEMANGLE_COMPONENT_FUNCTION_TYPE: + printf ("function type\n"); + break; + case DEMANGLE_COMPONENT_ARRAY_TYPE: + printf ("array type\n"); + break; + case DEMANGLE_COMPONENT_PTRMEM_TYPE: + printf ("pointer to member type\n"); + break; + case DEMANGLE_COMPONENT_ARGLIST: + printf ("argument list\n"); + break; + case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: + printf ("template argument list\n"); + break; + case DEMANGLE_COMPONENT_CAST: + printf ("cast\n"); + break; + case DEMANGLE_COMPONENT_UNARY: + printf ("unary operator\n"); + break; + case DEMANGLE_COMPONENT_BINARY: + printf ("binary operator\n"); + break; + case DEMANGLE_COMPONENT_BINARY_ARGS: + printf ("binary operator arguments\n"); + break; + case DEMANGLE_COMPONENT_TRINARY: + printf ("trinary operator\n"); + break; + case DEMANGLE_COMPONENT_TRINARY_ARG1: + printf ("trinary operator arguments 1\n"); + break; + case DEMANGLE_COMPONENT_TRINARY_ARG2: + printf ("trinary operator arguments 1\n"); + break; + case DEMANGLE_COMPONENT_LITERAL: + printf ("literal\n"); + break; + case DEMANGLE_COMPONENT_LITERAL_NEG: + printf ("negative literal\n"); + break; + } + + d_dump (d_left (dc), indent + 2); + d_dump (d_right (dc), indent + 2); +} + +#endif /* CP_DEMANGLE_DEBUG */ + +/* Fill in a DEMANGLE_COMPONENT_NAME. */ + +CP_STATIC_IF_GLIBCPP_V3 +int +cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len) +{ + if (p == NULL || s == NULL || len == 0) + return 0; + p->type = DEMANGLE_COMPONENT_NAME; + p->u.s_name.s = s; + p->u.s_name.len = len; + return 1; +} + +/* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR. */ + +CP_STATIC_IF_GLIBCPP_V3 +int +cplus_demangle_fill_extended_operator (struct demangle_component *p, int args, + struct demangle_component *name) +{ + if (p == NULL || args < 0 || name == NULL) + return 0; + p->type = DEMANGLE_COMPONENT_EXTENDED_OPERATOR; + p->u.s_extended_operator.args = args; + p->u.s_extended_operator.name = name; + return 1; +} + +/* Fill in a DEMANGLE_COMPONENT_CTOR. */ + +CP_STATIC_IF_GLIBCPP_V3 +int +cplus_demangle_fill_ctor (struct demangle_component *p, + enum gnu_v3_ctor_kinds kind, + struct demangle_component *name) +{ + if (p == NULL + || name == NULL + || (kind < gnu_v3_complete_object_ctor + && kind > gnu_v3_complete_object_allocating_ctor)) + return 0; + p->type = DEMANGLE_COMPONENT_CTOR; + p->u.s_ctor.kind = kind; + p->u.s_ctor.name = name; + return 1; +} + +/* Fill in a DEMANGLE_COMPONENT_DTOR. */ + +CP_STATIC_IF_GLIBCPP_V3 +int +cplus_demangle_fill_dtor (struct demangle_component *p, + enum gnu_v3_dtor_kinds kind, + struct demangle_component *name) +{ + if (p == NULL + || name == NULL + || (kind < gnu_v3_deleting_dtor + && kind > gnu_v3_base_object_dtor)) + return 0; + p->type = DEMANGLE_COMPONENT_DTOR; + p->u.s_dtor.kind = kind; + p->u.s_dtor.name = name; + return 1; +} + +/* Add a new component. */ + +static struct demangle_component * +d_make_empty (struct d_info *di) +{ + struct demangle_component *p; + + if (di->next_comp >= di->num_comps) + return NULL; + p = &di->comps[di->next_comp]; + ++di->next_comp; + return p; +} + +/* Add a new generic component. */ + +static struct demangle_component * +d_make_comp (struct d_info *di, enum demangle_component_type type, + struct demangle_component *left, + struct demangle_component *right) +{ + struct demangle_component *p; + + /* We check for errors here. A typical error would be a NULL return + from a subroutine. We catch those here, and return NULL + upward. */ + switch (type) + { + /* These types require two parameters. */ + case DEMANGLE_COMPONENT_QUAL_NAME: + case DEMANGLE_COMPONENT_LOCAL_NAME: + case DEMANGLE_COMPONENT_TYPED_NAME: + case DEMANGLE_COMPONENT_TEMPLATE: + case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE: + case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: + case DEMANGLE_COMPONENT_PTRMEM_TYPE: + case DEMANGLE_COMPONENT_UNARY: + case DEMANGLE_COMPONENT_BINARY: + case DEMANGLE_COMPONENT_BINARY_ARGS: + case DEMANGLE_COMPONENT_TRINARY: + case DEMANGLE_COMPONENT_TRINARY_ARG1: + case DEMANGLE_COMPONENT_TRINARY_ARG2: + case DEMANGLE_COMPONENT_LITERAL: + case DEMANGLE_COMPONENT_LITERAL_NEG: + if (left == NULL || right == NULL) + return NULL; + break; + + /* These types only require one parameter. */ + case DEMANGLE_COMPONENT_VTABLE: + case DEMANGLE_COMPONENT_VTT: + case DEMANGLE_COMPONENT_TYPEINFO: + case DEMANGLE_COMPONENT_TYPEINFO_NAME: + case DEMANGLE_COMPONENT_TYPEINFO_FN: + case DEMANGLE_COMPONENT_THUNK: + case DEMANGLE_COMPONENT_VIRTUAL_THUNK: + case DEMANGLE_COMPONENT_COVARIANT_THUNK: + case DEMANGLE_COMPONENT_JAVA_CLASS: + case DEMANGLE_COMPONENT_GUARD: + case DEMANGLE_COMPONENT_REFTEMP: + case DEMANGLE_COMPONENT_HIDDEN_ALIAS: + case DEMANGLE_COMPONENT_POINTER: + case DEMANGLE_COMPONENT_REFERENCE: + case DEMANGLE_COMPONENT_COMPLEX: + case DEMANGLE_COMPONENT_IMAGINARY: + case DEMANGLE_COMPONENT_VENDOR_TYPE: + case DEMANGLE_COMPONENT_ARGLIST: + case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: + case DEMANGLE_COMPONENT_CAST: + if (left == NULL) + return NULL; + break; + + /* This needs a right parameter, but the left parameter can be + empty. */ + case DEMANGLE_COMPONENT_ARRAY_TYPE: + if (right == NULL) + return NULL; + break; + + /* These are allowed to have no parameters--in some cases they + will be filled in later. */ + case DEMANGLE_COMPONENT_FUNCTION_TYPE: + case DEMANGLE_COMPONENT_RESTRICT: + case DEMANGLE_COMPONENT_VOLATILE: + case DEMANGLE_COMPONENT_CONST: + case DEMANGLE_COMPONENT_RESTRICT_THIS: + case DEMANGLE_COMPONENT_VOLATILE_THIS: + case DEMANGLE_COMPONENT_CONST_THIS: + break; + + /* Other types should not be seen here. */ + default: + return NULL; + } + + p = d_make_empty (di); + if (p != NULL) + { + p->type = type; + p->u.s_binary.left = left; + p->u.s_binary.right = right; + } + return p; +} + +/* Add a new name component. */ + +static struct demangle_component * +d_make_name (struct d_info *di, const char *s, int len) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (! cplus_demangle_fill_name (p, s, len)) + return NULL; + return p; +} + +/* Add a new builtin type component. */ + +static struct demangle_component * +d_make_builtin_type (struct d_info *di, + const struct demangle_builtin_type_info *type) +{ + struct demangle_component *p; + + if (type == NULL) + return NULL; + p = d_make_empty (di); + if (p != NULL) + { + p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE; + p->u.s_builtin.type = type; + } + return p; +} + +/* Add a new operator component. */ + +static struct demangle_component * +d_make_operator (struct d_info *di, const struct demangle_operator_info *op) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (p != NULL) + { + p->type = DEMANGLE_COMPONENT_OPERATOR; + p->u.s_operator.op = op; + } + return p; +} + +/* Add a new extended operator component. */ + +static struct demangle_component * +d_make_extended_operator (struct d_info *di, int args, + struct demangle_component *name) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (! cplus_demangle_fill_extended_operator (p, args, name)) + return NULL; + return p; +} + +/* Add a new constructor component. */ + +static struct demangle_component * +d_make_ctor (struct d_info *di, enum gnu_v3_ctor_kinds kind, + struct demangle_component *name) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (! cplus_demangle_fill_ctor (p, kind, name)) + return NULL; + return p; +} + +/* Add a new destructor component. */ + +static struct demangle_component * +d_make_dtor (struct d_info *di, enum gnu_v3_dtor_kinds kind, + struct demangle_component *name) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (! cplus_demangle_fill_dtor (p, kind, name)) + return NULL; + return p; +} + +/* Add a new template parameter. */ + +static struct demangle_component * +d_make_template_param (struct d_info *di, long i) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (p != NULL) + { + p->type = DEMANGLE_COMPONENT_TEMPLATE_PARAM; + p->u.s_number.number = i; + } + return p; +} + +/* Add a new standard substitution component. */ + +static struct demangle_component * +d_make_sub (struct d_info *di, const char *name, int len) +{ + struct demangle_component *p; + + p = d_make_empty (di); + if (p != NULL) + { + p->type = DEMANGLE_COMPONENT_SUB_STD; + p->u.s_string.string = name; + p->u.s_string.len = len; + } + return p; +} + +/* <mangled-name> ::= _Z <encoding> + + TOP_LEVEL is non-zero when called at the top level. */ + +CP_STATIC_IF_GLIBCPP_V3 +struct demangle_component * +cplus_demangle_mangled_name (struct d_info *di, int top_level) +{ + if (d_next_char (di) != '_') + return NULL; + if (d_next_char (di) != 'Z') + return NULL; + return d_encoding (di, top_level); +} + +/* Return whether a function should have a return type. The argument + is the function name, which may be qualified in various ways. The + rules are that template functions have return types with some + exceptions, function types which are not part of a function name + mangling have return types with some exceptions, and non-template + function names do not have return types. The exceptions are that + constructors, destructors, and conversion operators do not have + return types. */ + +static int +has_return_type (struct demangle_component *dc) +{ + if (dc == NULL) + return 0; + switch (dc->type) + { + default: + return 0; + case DEMANGLE_COMPONENT_TEMPLATE: + return ! is_ctor_dtor_or_conversion (d_left (dc)); + case DEMANGLE_COMPONENT_RESTRICT_THIS: + case DEMANGLE_COMPONENT_VOLATILE_THIS: + case DEMANGLE_COMPONENT_CONST_THIS: + return has_return_type (d_left (dc)); + } +} + +/* Return whether a name is a constructor, a destructor, or a + conversion operator. */ + +static int +is_ctor_dtor_or_conversion (struct demangle_component *dc) +{ + if (dc == NULL) + return 0; + switch (dc->type) + { + default: + return 0; + case DEMANGLE_COMPONENT_QUAL_NAME: + case DEMANGLE_COMPONENT_LOCAL_NAME: + return is_ctor_dtor_or_conversion (d_right (dc)); + case DEMANGLE_COMPONENT_CTOR: + case DEMANGLE_COMPONENT_DTOR: + case DEMANGLE_COMPONENT_CAST: + return 1; + } +} + +/* <encoding> ::= <(function) name> <bare-function-type> + ::= <(data) name> + ::= <special-name> + + TOP_LEVEL is non-zero when called at the top level, in which case + if DMGL_PARAMS is not set we do not demangle the function + parameters. We only set this at the top level, because otherwise + we would not correctly demangle names in local scopes. */ + +static struct demangle_component * +d_encoding (struct d_info *di, int top_level) +{ + char peek = d_peek_char (di); + + if (peek == 'G' || peek == 'T') + return d_special_name (di); + else + { + struct demangle_component *dc; + + dc = d_name (di); + + if (dc != NULL && top_level && (di->options & DMGL_PARAMS) == 0) + { + /* Strip off any initial CV-qualifiers, as they really apply + to the `this' parameter, and they were not output by the + v2 demangler without DMGL_PARAMS. */ + while (dc->type == DEMANGLE_COMPONENT_RESTRICT_THIS + || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS + || dc->type == DEMANGLE_COMPONENT_CONST_THIS) + dc = d_left (dc); + + /* If the top level is a DEMANGLE_COMPONENT_LOCAL_NAME, then + there may be CV-qualifiers on its right argument which + really apply here; this happens when parsing a class + which is local to a function. */ + if (dc->type == DEMANGLE_COMPONENT_LOCAL_NAME) + { + struct demangle_component *dcr; + + dcr = d_right (dc); + while (dcr->type == DEMANGLE_COMPONENT_RESTRICT_THIS + || dcr->type == DEMANGLE_COMPONENT_VOLATILE_THIS + || dcr->type == DEMANGLE_COMPONENT_CONST_THIS) + dcr = d_left (dcr); + dc->u.s_binary.right = dcr; + } + + return dc; + } + + peek = d_peek_char (di); + if (peek == '\0' || peek == 'E') + return dc; + return d_make_comp (di, DEMANGLE_COMPONENT_TYPED_NAME, dc, + d_bare_function_type (di, has_return_type (dc))); + } +} + +/* <name> ::= <nested-name> + ::= <unscoped-name> + ::= <unscoped-template-name> <template-args> + ::= <local-name> + + <unscoped-name> ::= <unqualified-name> + ::= St <unqualified-name> + + <unscoped-template-name> ::= <unscoped-name> + ::= <substitution> +*/ + +static struct demangle_component * +d_name (struct d_info *di) +{ + char peek = d_peek_char (di); + struct demangle_component *dc; + + switch (peek) + { + case 'N': + return d_nested_name (di); + + case 'Z': + return d_local_name (di); + +/* APPLE LOCAL begin mainline 2007-05-09 5173149 */ \ + case 'L': + return d_unqualified_name (di); + +/* APPLE LOCAL end mainline 2007-05-09 5173149 */ \ + case 'S': + { + int subst; + + if (d_peek_next_char (di) != 't') + { + dc = d_substitution (di, 0); + subst = 1; + } + else + { + d_advance (di, 2); + dc = d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, + d_make_name (di, "std", 3), + d_unqualified_name (di)); + di->expansion += 3; + subst = 0; + } + + if (d_peek_char (di) != 'I') + { + /* The grammar does not permit this case to occur if we + called d_substitution() above (i.e., subst == 1). We + don't bother to check. */ + } + else + { + /* This is <template-args>, which means that we just saw + <unscoped-template-name>, which is a substitution + candidate if we didn't just get it from a + substitution. */ + if (! subst) + { + if (! d_add_substitution (di, dc)) + return NULL; + } + dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc, + d_template_args (di)); + } + + return dc; + } + + default: + dc = d_unqualified_name (di); + if (d_peek_char (di) == 'I') + { + /* This is <template-args>, which means that we just saw + <unscoped-template-name>, which is a substitution + candidate. */ + if (! d_add_substitution (di, dc)) + return NULL; + dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc, + d_template_args (di)); + } + return dc; + } +} + +/* <nested-name> ::= N [<CV-qualifiers>] <prefix> <unqualified-name> E + ::= N [<CV-qualifiers>] <template-prefix> <template-args> E +*/ + +static struct demangle_component * +d_nested_name (struct d_info *di) +{ + struct demangle_component *ret; + struct demangle_component **pret; + + if (d_next_char (di) != 'N') + return NULL; + + pret = d_cv_qualifiers (di, &ret, 1); + if (pret == NULL) + return NULL; + + *pret = d_prefix (di); + if (*pret == NULL) + return NULL; + + if (d_next_char (di) != 'E') + return NULL; + + return ret; +} + |