blob: 01d022748c60898a890500cfc44ab6b2fcc8bb76 [file] [log] [blame]
/* Demangler for g++ V3 ABI.
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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)
int cplus_demangle_v3_callback(const char *mangled, int options,
demangle_callbackref callback)
int java_demangle_v3_callback(const char *mangled,
demangle_callbackref callback)
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
demangle_callbackref
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
cplus_demangle_print_callback
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 functions, q.v.:
char *__cxa_demangle (const char *mangled, char *buf, size_t *len,
int *status)
int __gcclibcxx_demangle_callback (const char *,
void (*)
(const char *, size_t, void *),
void *)
instead of cplus_demangle_v3[_callback]() and
java_demangle_v3[_callback]().
IN_GLIBCPP_V3
If defined, this file defines only __cxa_demangle() and
__gcclibcxx_demangle_callback(), 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.
*/
#if defined (_AIX) && !defined (__GNUC__)
#pragma alloca
#endif
#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
#ifdef HAVE_ALLOCA_H
# include <alloca.h>
#else
# ifndef alloca
# ifdef __GNUC__
# define alloca __builtin_alloca
# else
extern char *alloca ();
# endif /* __GNUC__ */
# endif /* alloca */
#endif /* HAVE_ALLOCA_H */
//#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_print_callback d_print_callback
static int d_print_callback (int, const struct demangle_component *,
demangle_callbackref, void *);
#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: 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 these structures to hold information during printing. */
struct d_growable_string
{
/* Buffer holding the result. */
char *buf;
/* Current length of data in buffer. */
size_t len;
/* Allocated size of buffer. */
size_t alc;
/* Set to 1 if we had a memory allocation failure. */
int allocation_failure;
};
enum { D_PRINT_BUFFER_LENGTH = 256 };
struct d_print_info
{
/* The options passed to the demangler. */
int options;
/* Fixed-length allocated buffer for demangled data, flushed to the
callback with a NUL termination once full. */
char buf[D_PRINT_BUFFER_LENGTH];
/* Current length of data in buffer. */
size_t len;
/* The last character printed, saved individually so that it survives
any buffer flush. */
char last_char;
/* Callback function to handle demangled buffer flush. */
demangle_callbackref callback;
/* Opaque callback argument. */
void *opaque;
/* 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 saw a demangling error. */
int demangle_failure;
/* The current index into any template argument packs we are using
for printing. */
int pack_index;
/* Number of d_print_flush calls so far. */
unsigned long int flush_count;
};
#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_demangle_mangled_name (struct d_info *, const char *);
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_vector_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 struct demangle_component *d_lambda (struct d_info *);
static struct demangle_component *d_unnamed_type (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_growable_string_init (struct d_growable_string *, size_t);
static inline void
d_growable_string_resize (struct d_growable_string *, size_t);
static inline void
d_growable_string_append_buffer (struct d_growable_string *,
const char *, size_t);
static void
d_growable_string_callback_adapter (const char *, size_t, void *);
static void
d_print_init (struct d_print_info *, int, demangle_callbackref, void *);
static inline void d_print_error (struct d_print_info *);
static inline int d_print_saw_error (struct d_print_info *);
static inline void d_print_flush (struct d_print_info *);
static inline void d_append_char (struct d_print_info *, char);
static inline void d_append_buffer (struct d_print_info *,
const char *, size_t);
static inline void d_append_string (struct d_print_info *, const char *);
static inline char d_last_char (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 int d_demangle_callback (const char *, int,
demangle_callbackref, void *);
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)
{
if (indent == 0)
printf ("failed demangling\n");
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_RVALUE_REFERENCE:
printf ("rvalue 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_FIXED_TYPE:
printf ("fixed-point 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;
case DEMANGLE_COMPONENT_JAVA_RESOURCE:
printf ("java resource\n");
break;
case DEMANGLE_COMPONENT_COMPOUND_NAME:
printf ("compound name\n");
break;
case DEMANGLE_COMPONENT_CHARACTER:
printf ("character '%c'\n", dc->u.s_character.character);
return;
case DEMANGLE_COMPONENT_DECLTYPE:
printf ("decltype\n");
break;
case DEMANGLE_COMPONENT_PACK_EXPANSION:
printf ("pack expansion\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
|| (int) kind < gnu_v3_complete_object_ctor
|| (int) 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
|| (int) kind < gnu_v3_deleting_dtor
|| (int) 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:
case DEMANGLE_COMPONENT_COMPOUND_NAME:
case DEMANGLE_COMPONENT_VECTOR_TYPE:
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_RVALUE_REFERENCE:
case DEMANGLE_COMPONENT_COMPLEX:
case DEMANGLE_COMPONENT_IMAGINARY:
case DEMANGLE_COMPONENT_VENDOR_TYPE:
case DEMANGLE_COMPONENT_CAST:
case DEMANGLE_COMPONENT_JAVA_RESOURCE:
case DEMANGLE_COMPONENT_DECLTYPE:
case DEMANGLE_COMPONENT_PACK_EXPANSION:
case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
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:
case DEMANGLE_COMPONENT_ARGLIST:
case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
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 demangle mangled name component. */
static struct demangle_component *
d_make_demangle_mangled_name (struct d_info *di, const char *s)
{
if (d_peek_char (di) != '_' || d_peek_next_char (di) != 'Z')
return d_make_name (di, s, strlen (s));
d_advance (di, 2);
return d_encoding (di, 0);
}
/* 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;
}
static struct demangle_component *
d_make_default_arg (struct d_info *di, int num,
struct demangle_component *sub)
{
struct demangle_component *p = d_make_empty (di);
if (p)
{
p->type = DEMANGLE_COMPONENT_DEFAULT_ARG;
p->u.s_unary_num.num = num;
p->u.s_unary_num.sub = sub;
}
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 function parameter. */
static struct demangle_component *
d_make_function_param (struct d_info *di, long i)
{
struct demangle_component *p;
p = d_make_empty (di);
if (p != NULL)
{
p->type = DEMANGLE_COMPONENT_FUNCTION_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_check_char (di, '_')
/* Allow missing _ if not at toplevel to work around a
bug in G++ abi-version=2 mangling; see the comment in
write_template_arg. */
&& top_level)
return NULL;
if (! d_check_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 (dc == NULL || 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);
case 'L':
case 'U':
return d_unqualified_name (di);
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_check_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_check_char (di, 'E'))
return NULL;
return ret;
}
/* <prefix> ::= <prefix> <unqualified-name>
::= <template-prefix> <template-args>
::= <template-param>
::=
::= <substitution>
<template-prefix> ::= <prefix> <(template) unqualified-name>
::= <template-param>
::= <substitution>
*/
static struct demangle_component *
d_prefix (struct d_info *di)
{
struct demangle_component *ret = NULL;
while (1)
{
char peek;
enum demangle_component_type comb_type;
struct demangle_component *dc;
peek = d_peek_char (di);
if (peek == '\0')
return NULL;
/* The older code accepts a <local-name> here, but I don't see
that in the grammar. The older code does not accept a
<template-param> here. */
comb_type = DEMANGLE_COMPONENT_QUAL_NAME;
if (IS_DIGIT (peek)
|| IS_LOWER (peek)
|| peek == 'C'
|| peek == 'D'
|| peek == 'U'
|| peek == 'L')
dc = d_unqualified_name (di);
else if (peek == 'S')
dc = d_substitution (di, 1);
else if (peek == 'I')
{
if (ret == NULL)
return NULL;
comb_type = DEMANGLE_COMPONENT_TEMPLATE;
dc = d_template_args (di);
}
else if (peek == 'T')
dc = d_template_param (di);
else if (peek == 'E')
return ret;
else if (peek == 'M')
{
/* Initializer scope for a lambda. We don't need to represent
this; the normal code will just treat the variable as a type
scope, which gives appropriate output. */
if (ret == NULL)
return NULL;
d_advance (di, 1);
continue;
}
else
return NULL;
if (ret == NULL)
ret = dc;
else
ret = d_make_comp (di, comb_type, ret, dc);
if (peek != 'S' && d_peek_char (di) != 'E')
{
if (! d_add_substitution (di, ret))
return NULL;
}
}
}
/* <unqualified-name> ::= <operator-name>
::= <ctor-dtor-name>
::= <source-name>
::= <local-source-name>
<local-source-name> ::= L <source-name> <discriminator>
*/
static struct demangle_component *
d_unqualified_name (struct d_info *di)
{
char peek;
peek = d_peek_char (di);
if (IS_DIGIT (peek))
return d_source_name (di);
else if (IS_LOWER (peek))
{
struct demangle_component *ret;
ret = d_operator_name (di);
if (ret != NULL && ret->type == DEMANGLE_COMPONENT_OPERATOR)
di->expansion += sizeof "operator" + ret->u.s_operator.op->len - 2;
return ret;
}
else if (peek == 'C' || peek == 'D')
return d_ctor_dtor_name (di);
else if (peek == 'L')
{
struct demangle_component * ret;
d_advance (di, 1);
ret = d_source_name (di);
if (ret == NULL)
return NULL;
if (! d_discriminator (di))
return NULL;
return ret;
}
else if (peek == 'U')
{
switch (d_peek_next_char (di))
{
case 'l':
return d_lambda (di);
case 't':
return d_unnamed_type (di);
default:
return NULL;
}
}
else
return NULL;
}
/* <source-name> ::= <(positive length) number> <identifier> */
static struct demangle_component *
d_source_name (struct d_info *di)
{
long len;
struct demangle_component *ret;
len = d_number (di);
if (len <= 0)
return NULL;
ret = d_identifier (di, len);
di->last_name = ret;
return ret;
}
/* number ::= [n] <(non-negative decimal integer)> */
static long
d_number (struct d_info *di)
{
int negative;
char peek;
long ret;
negative = 0;
peek = d_peek_char (di);
if (peek == 'n')
{
negative = 1;
d_advance (di, 1);
peek = d_peek_char (di);
}
ret = 0;
while (1)
{
if (! IS_DIGIT (peek))
{
if (negative)
ret = - ret;
return ret;
}
ret = ret * 10 + peek - '0';
d_advance (di, 1);
peek = d_peek_char (di);
}
}
/* Like d_number, but returns a demangle_component. */
static struct demangle_component *
d_number_component (struct d_info *di)
{
struct demangle_component *ret = d_make_empty (di);
if (ret)
{
ret->type = DEMANGLE_COMPONENT_NUMBER;
ret->u.s_number.number = d_number (di);
}
return ret;
}
/* identifier ::= <(unqualified source code identifier)> */
static struct demangle_component *
d_identifier (struct d_info *di, int len)
{
const char *name;
name = d_str (di);
if (di->send - name < len)
return NULL;
d_advance (di, len);
/* A Java mangled name may have a trailing '$' if it is a C++
keyword. This '$' is not included in the length count. We just
ignore the '$'. */
if ((di->options & DMGL_JAVA) != 0
&& d_peek_char (di) == '$')
d_advance (di, 1);
/* Look for something which looks like a gcc encoding of an
anonymous namespace, and replace it with a more user friendly
name. */
if (len >= (int) ANONYMOUS_NAMESPACE_PREFIX_LEN + 2
&& memcmp (name, ANONYMOUS_NAMESPACE_PREFIX,
ANONYMOUS_NAMESPACE_PREFIX_LEN) == 0)
{
const char *s;
s = name + ANONYMOUS_NAMESPACE_PREFIX_LEN;
if ((*s == '.' || *s == '_' || *s == '$')
&& s[1] == 'N')
{
di->expansion -= len - sizeof "(anonymous namespace)";
return d_make_name (di, "(anonymous namespace)",
sizeof "(anonymous namespace)" - 1);
}
}
return d_make_name (di, name, len);
}
/* operator_name ::= many different two character encodings.
::= cv <type>
::= v <digit> <source-name>
*/
#define NL(s) s, (sizeof s) - 1
CP_STATIC_IF_GLIBCPP_V3
const struct demangle_operator_info cplus_demangle_operators[] =
{
{ "aN", NL ("&="), 2 },
{ "aS", NL ("="), 2 },
{ "aa", NL ("&&"), 2 },
{ "ad", NL ("&"), 1 },
{ "an", NL ("&"), 2 },
{ "cl", NL ("()"), 2 },
{ "cm", NL (","), 2 },
{ "co", NL ("~"), 1 },
{ "dV", NL ("/="), 2 },
{ "da", NL ("delete[]"), 1 },
{ "de", NL ("*"), 1 },
{ "dl", NL ("delete"), 1 },
{ "dt", NL ("."), 2 },
{ "dv", NL ("/"), 2 },
{ "eO", NL ("^="), 2 },
{ "eo", NL ("^"), 2 },
{ "eq", NL ("=="), 2 },
{ "ge", NL (">="), 2 },
{ "gt", NL (">"), 2 },
{ "ix", NL ("[]"), 2 },
{ "lS", NL ("<<="), 2 },
{ "le", NL ("<="), 2 },
{ "ls", NL ("<<"), 2 },
{ "lt", NL ("<"), 2 },
{ "mI", NL ("-="), 2 },
{ "mL", NL ("*="), 2 },
{ "mi", NL ("-"), 2 },
{ "ml", NL ("*"), 2 },
{ "mm", NL ("--"), 1 },
{ "na", NL ("new[]"), 1 },
{ "ne", NL ("!="), 2 },
{ "ng", NL ("-"), 1 },
{ "nt", NL ("!"), 1 },
{ "nw", NL ("new"), 1 },
{ "oR", NL ("|="), 2 },
{ "oo", NL ("||"), 2 },
{ "or", NL ("|"), 2 },
{ "pL", NL ("+="), 2 },
{ "pl", NL ("+"), 2 },
{ "pm", NL ("->*"), 2 },
{ "pp", NL ("++"), 1 },
{ "ps", NL ("+"), 1 },
{ "pt", NL ("->"), 2 },
{ "qu", NL ("?"), 3 },
{ "rM", NL ("%="), 2 },
{ "rS", NL (">>="), 2 },
{ "rm", NL ("%"), 2 },
{ "rs", NL (">>"), 2 },
{ "st", NL ("sizeof "), 1 },
{ "sz", NL ("sizeof "), 1 },
{ "at", NL ("alignof "), 1 },
{ "az", NL ("alignof "), 1 },
{ NULL, NULL, 0, 0 }
};
static struct demangle_component *
d_operator_name (struct d_info *di)
{
char c1;
char c2;
c1 = d_next_char (di);
c2 = d_next_char (di);
if (c1 == 'v' && IS_DIGIT (c2))
return d_make_extended_operator (di, c2 - '0', d_source_name (di));
else if (c1 == 'c' && c2 == 'v')
return d_make_comp (di, DEMANGLE_COMPONENT_CAST,
cplus_demangle_type (di), NULL);
else
{
/* LOW is the inclusive lower bound. */
int low = 0;
/* HIGH is the exclusive upper bound. We subtract one to ignore
the sentinel at the end of the array. */
int high = ((sizeof (cplus_demangle_operators)
/ sizeof (cplus_demangle_operators[0]))
- 1);
while (1)
{
int i;
const struct demangle_operator_info *p;
i = low + (high - low) / 2;
p = cplus_demangle_operators + i;
if (c1 == p->code[0] && c2 == p->code[1])
return d_make_operator (di, p);
if (c1 < p->code[0] || (c1 == p->code[0] && c2 < p->code[1]))
high = i;
else
low = i + 1;
if (low == high)
return NULL;
}
}
}
static struct demangle_component *
d_make_character (struct d_info *di, int c)
{
struct demangle_component *p;
p = d_make_empty (di);
if (p != NULL)
{
p->type = DEMANGLE_COMPONENT_CHARACTER;
p->u.s_character.character = c;
}
return p;
}
static struct demangle_component *
d_java_resource (struct d_info *di)
{
struct demangle_component *p = NULL;
struct demangle_component *next = NULL;
long len, i;
char c;
const char *str;
len = d_number (di);
if (len <= 1)
return NULL;
/* Eat the leading '_'. */
if (d_next_char (di) != '_')
return NULL;
len--;
str = d_str (di);
i = 0;
while (len > 0)
{
c = str[i];
if (!c)
return NULL;
/* Each chunk is either a '$' escape... */
if (c == '$')
{
i++;
switch (str[i++])
{
case 'S':
c = '/';
break;
case '_':
c = '.';
break;
case '$':
c = '$';
break;
default:
return NULL;
}
next = d_make_character (di, c);
d_advance (di, i);
str = d_str (di);
len -= i;
i = 0;
if (next == NULL)
return NULL;
}
/* ... or a sequence of characters. */
else
{
while (i < len && str[i] && str[i] != '$')
i++;
next = d_make_name (di, str, i);
d_advance (di, i);
str = d_str (di);
len -= i;
i = 0;
if (next == NULL)
return NULL;
}
if (p == NULL)
p = next;
else
{
p = d_make_comp (di, DEMANGLE_COMPONENT_COMPOUND_NAME, p, next);
if (p == NULL)
return NULL;
}
}
p = d_make_comp (di, DEMANGLE_COMPONENT_JAVA_RESOURCE, p, NULL);
return p;
}
/* <special-name> ::= TV <type>
::= TT <type>
::= TI <type>
::= TS <type>
::= GV <(object) name>
::= T <call-offset> <(base) encoding>
::= Tc <call-offset> <call-offset> <(base) encoding>
Also g++ extensions:
::= TC <type> <(offset) number> _ <(base) type>
::= TF <type>
::= TJ <type>
::= GR <name>
::= GA <encoding>
::= Gr <resource name>
*/
static struct demangle_component *
d_special_name (struct d_info *di)
{
di->expansion += 20;
if (d_check_char (di, 'T'))
{
switch (d_next_char (di))
{
case 'V':
di->expansion -= 5;
return d_make_comp (di, DEMANGLE_COMPONENT_VTABLE,
cplus_demangle_type (di), NULL);
case 'T':
di->expansion -= 10;
return d_make_comp (di, DEMANGLE_COMPONENT_VTT,
cplus_demangle_type (di), NULL);
case 'I':
return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO,
cplus_demangle_type (di), NULL);
case 'S':
return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_NAME,
cplus_demangle_type (di), NULL);
case 'h':
if (! d_call_offset (di, 'h'))
return NULL;
return d_make_comp (di, DEMANGLE_COMPONENT_THUNK,
d_encoding (di, 0), NULL);
case 'v':
if (! d_call_offset (di, 'v'))
return NULL;
return d_make_comp (di, DEMANGLE_COMPONENT_VIRTUAL_THUNK,
d_encoding (di, 0), NULL);
case 'c':
if (! d_call_offset (di, '\0'))
return NULL;
if (! d_call_offset (di, '\0'))
return NULL;
return d_make_comp (di, DEMANGLE_COMPONENT_COVARIANT_THUNK,
d_encoding (di, 0), NULL);
case 'C':
{
struct demangle_component *derived_type;
long offset;
struct demangle_component *base_type;
derived_type = cplus_demangle_type (di);
offset = d_number (di);
if (offset < 0)
return NULL;
if (! d_check_char (di, '_'))
return NULL;
base_type = cplus_demangle_type (di);
/* We don't display the offset. FIXME: We should display
it in verbose mode. */
di->expansion += 5;
return d_make_comp (di, DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE,
base_type, derived_type);
}
case 'F':
return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_FN,
cplus_demangle_type (di), NULL);
case 'J':
return d_make_comp (di, DEMANGLE_COMPONENT_JAVA_CLASS,
cplus_demangle_type (di), NULL);
default:
return NULL;
}
}
else if (d_check_char (di, 'G'))
{
switch (d_next_char (di))
{
case 'V':
return d_make_comp (di, DEMANGLE_COMPONENT_GUARD, d_name (di), NULL);
case 'R':
return d_make_comp (di, DEMANGLE_COMPONENT_REFTEMP, d_name (di),
NULL);
case 'A':
return d_make_comp (di, DEMANGLE_COMPONENT_HIDDEN_ALIAS,
d_encoding (di, 0), NULL);
case 'r':
return d_java_resource (di);
default:
return NULL;
}
}
else
return NULL;
}
/* <call-offset> ::= h <nv-offset> _
::= v <v-offset> _
<nv-offset> ::= <(offset) number>
<v-offset> ::= <(offset) number> _ <(virtual offset) number>
The C parameter, if not '\0', is a character we just read which is
the start of the <call-offset>.
We don't display the offset information anywhere. FIXME: We should
display it in verbose mode. */
static int
d_call_offset (struct d_info *di, int c)
{
if (c == '\0')
c = d_next_char (di);
if (c == 'h')
d_number (di);
else if (c == 'v')
{
d_number (di);
if (! d_check_char (di, '_'))
return 0;
d_number (di);
}
else
return 0;
if (! d_check_char (di, '_'))
return 0;
return 1;
}
/* <ctor-dtor-name> ::= C1
::= C2
::= C3
::= D0
::= D1
::= D2
*/
static struct demangle_component *
d_ctor_dtor_name (struct d_info *di)
{
if (di->last_name != NULL)
{
if (di->last_name->type == DEMANGLE_COMPONENT_NAME)
di->expansion += di->last_name->u.s_name.len;
else if (di->last_name->type == DEMANGLE_COMPONENT_SUB_STD)
di->expansion += di->last_name->u.s_string.len;
}
switch (d_peek_char (di))
{
case 'C':
{
enum gnu_v3_ctor_kinds kind;
switch (d_peek_next_char (di))
{
case '1':
kind = gnu_v3_complete_object_ctor;
break;
case '2':
kind = gnu_v3_base_object_ctor;
break;
case '3':
kind = gnu_v3_complete_object_allocating_ctor;
break;
default:
return NULL;
}
d_advance (di, 2);
return d_make_ctor (di, kind, di->last_name);
}
case 'D':
{
enum gnu_v3_dtor_kinds kind;
switch (d_peek_next_char (di))
{
case '0':
kind = gnu_v3_deleting_dtor;
break;
case '1':
kind = gnu_v3_complete_object_dtor;
break;
case '2':
kind = gnu_v3_base_object_dtor;
break;
default:
return NULL;
}
d_advance (di, 2);
return d_make_dtor (di, kind, di->last_name);
}
default:
return NULL;
}
}
/* <type> ::= <builtin-type>
::= <function-type>
::= <class-enum-type>
::= <array-type>
::= <pointer-to-member-type>
::= <template-param>
::= <template-template-param> <template-args>
::= <substitution>
::= <CV-qualifiers> <type>
::= P <type>
::= R <type>
::= O <type> (C++0x)
::= C <type>
::= G <type>
::= U <source-name> <type>
<builtin-type> ::= various one letter codes
::= u <source-name>
*/
CP_STATIC_IF_GLIBCPP_V3
const struct demangle_builtin_type_info
cplus_demangle_builtin_types[D_BUILTIN_TYPE_COUNT] =
{
/* a */ { NL ("signed char"), NL ("signed char"), D_PRINT_DEFAULT },
/* b */ { NL ("bool"), NL ("boolean"), D_PRINT_BOOL },
/* c */ { NL ("char"), NL ("byte"), D_PRINT_DEFAULT },
/* d */ { NL ("double"), NL ("double"), D_PRINT_FLOAT },
/* e */ { NL ("long double"), NL ("long double"), D_PRINT_FLOAT },
/* f */ { NL ("float"), NL ("float"), D_PRINT_FLOAT },
/* g */ { NL ("__float128"), NL ("__float128"), D_PRINT_FLOAT },
/* h */ { NL ("unsigned char"), NL ("unsigned char"), D_PRINT_DEFAULT },
/* i */ { NL ("int"), NL ("int"), D_PRINT_INT },
/* j */ { NL ("unsigned int"), NL ("unsigned"), D_PRINT_UNSIGNED },
/* k */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
/* l */ { NL ("long"), NL ("long"), D_PRINT_LONG },
/* m */ { NL ("unsigned long"), NL ("unsigned long"), D_PRINT_UNSIGNED_LONG },
/* n */ { NL ("__int128"), NL ("__int128"), D_PRINT_DEFAULT },
/* o */ { NL ("unsigned __int128"), NL ("unsigned __int128"),
D_PRINT_DEFAULT },
/* p */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
/* q */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
/* r */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
/* s */ { NL ("short"), NL ("short"), D_PRINT_DEFAULT },
/* t */ { NL ("unsigned short"), NL ("unsigned short"), D_PRINT_DEFAULT },
/* u */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
/* v */ { NL ("void"), NL ("void"), D_PRINT_VOID },
/* w */ { NL ("wchar_t"), NL ("char"), D_PRINT_DEFAULT },
/* x */ { NL ("long long"), NL ("long"), D_PRINT_LONG_LONG },
/* y */ { NL ("unsigned long long"), NL ("unsigned long long"),
D_PRINT_UNSIGNED_LONG_LONG },
/* z */ { NL ("..."), NL ("..."), D_PRINT_DEFAULT },
/* 26 */ { NL ("decimal32"), NL ("decimal32"), D_PRINT_DEFAULT },
/* 27 */ { NL ("decimal64"), NL ("decimal64"), D_PRINT_DEFAULT },
/* 28 */ { NL ("decimal128"), NL ("decimal128"), D_PRINT_DEFAULT },
/* 29 */ { NL ("half"), NL ("half"), D_PRINT_FLOAT },
/* 30 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT },
/* 31 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT },
/* 32 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"),
D_PRINT_DEFAULT },
};
CP_STATIC_IF_GLIBCPP_V3
struct demangle_component *
cplus_demangle_type (struct d_info *di)
{
char peek;
struct demangle_component *ret;
int can_subst;
/* The ABI specifies that when CV-qualifiers are used, the base type
is substitutable, and the fully qualified type is substitutable,
but the base type with a strict subset of the CV-qualifiers is
not substitutable. The natural recursive implementation of the
CV-qualifiers would cause subsets to be substitutable, so instead
we pull them all off now.
FIXME: The ABI says that order-insensitive vendor qualifiers
should be handled in the same way, but we have no way to tell
which vendor qualifiers are order-insensitive and which are
order-sensitive. So we just assume that they are all
order-sensitive. g++ 3.4 supports only one vendor qualifier,
__vector, and it treats it as order-sensitive when mangling
names. */
peek = d_peek_char (di);
if (peek == 'r' || peek == 'V' || peek == 'K')
{
struct demangle_component **pret;
pret = d_cv_qualifiers (di, &ret, 0);
if (pret == NULL)
return NULL;
*pret = cplus_demangle_type (di);
if (! *pret || ! d_add_substitution (di, ret))
return NULL;
return ret;
}
can_subst = 1;
switch (peek)
{
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
case 'h': case 'i': case 'j': case 'l': case 'm': case 'n':
case 'o': case 's': case 't':
case 'v': case 'w': case 'x': case 'y': case 'z':
ret = d_make_builtin_type (di,
&cplus_demangle_builtin_types[peek - 'a']);
di->expansion += ret->u.s_builtin.type->len;
can_subst = 0;
d_advance (di, 1);
break;
case 'u':
d_advance (di, 1);
ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE,
d_source_name (di), NULL);
break;
case 'F':
ret = d_function_type (di);
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case 'N':
case 'Z':
ret = d_class_enum_type (di);
break;
case 'A':
ret = d_array_type (di);
break;
case 'M':
ret = d_pointer_to_member_type (di);
break;
case 'T':
ret = d_template_param (di);
if (d_peek_char (di) == 'I')
{
/* This is <template-template-param> <template-args>. The
<template-template-param> part is a substitution
candidate. */
if (! d_add_substitution (di, ret))
return NULL;
ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
d_template_args (di));
}
break;
case 'S':
/* If this is a special substitution, then it is the start of
<class-enum-type>. */
{
char peek_next;
peek_next = d_peek_next_char (di);
if (IS_DIGIT (peek_next)
|| peek_next == '_'
|| IS_UPPER (peek_next))
{
ret = d_substitution (di, 0);
/* The substituted name may have been a template name and
may be followed by tepmlate args. */
if (d_peek_char (di) == 'I')
ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
d_template_args (di));
else
can_subst = 0;
}
else
{
ret = d_class_enum_type (di);
/* If the substitution was a complete type, then it is not
a new substitution candidate. However, if the
substitution was followed by template arguments, then
the whole thing is a substitution candidate. */
if (ret != NULL && ret->type == DEMANGLE_COMPONENT_SUB_STD)
can_subst = 0;
}
}
break;
case 'O':
d_advance (di, 1);
ret = d_make_comp (di, DEMANGLE_COMPONENT_RVALUE_REFERENCE,
cplus_demangle_type (di), NULL);
break;
case 'P':
d_advance (di, 1);
ret = d_make_comp (di, DEMANGLE_COMPONENT_POINTER,
cplus_demangle_type (di), NULL);
break;
case 'R':
d_advance (di, 1);
ret = d_make_comp (di, DEMANGLE_COMPONENT_REFERENCE,
cplus_demangle_type (di), NULL);
break;
case 'C':
d_advance (di, 1);
ret = d_make_comp (di, DEMANGLE_COMPONENT_COMPLEX,
cplus_demangle_type (di), NULL);
break;
case 'G':
d_advance (di, 1);
ret = d_make_comp (di, DEMANGLE_COMPONENT_IMAGINARY,
cplus_demangle_type (di), NULL);
break;
case 'U':
d_advance (di, 1);
ret = d_source_name (di);
ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL,
cplus_demangle_type (di), ret);
break;
case 'D':
can_subst = 0;
d_advance (di, 1);
peek = d_next_char (di);
switch (peek)
{
case 'T':
case 't':
/* decltype (expression) */
ret = d_make_comp (di, DEMANGLE_COMPONENT_DECLTYPE,
d_expression (di), NULL);
if (ret && d_next_char (di) != 'E')
ret = NULL;
break;
case 'p':
/* Pack expansion. */
ret = d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION,
cplus_demangle_type (di), NULL);
break;
case 'f':
/* 32-bit decimal floating point */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[26]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'd':
/* 64-bit DFP */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[27]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'e':
/* 128-bit DFP */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[28]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'h':
/* 16-bit half-precision FP */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 's':
/* char16_t */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'i':
/* char32_t */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'F':
/* Fixed point types. DF<int bits><length><fract bits><sat> */
ret = d_make_empty (di);
ret->type = DEMANGLE_COMPONENT_FIXED_TYPE;
if ((ret->u.s_fixed.accum = IS_DIGIT (d_peek_char (di))))
/* For demangling we don't care about the bits. */
d_number (di);
ret->u.s_fixed.length = cplus_demangle_type (di);
if (ret->u.s_fixed.length == NULL)
return NULL;
d_number (di);
peek = d_next_char (di);
ret->u.s_fixed.sat = (peek == 's');
break;
case 'v':
ret = d_vector_type (di);
break;
case 'n':
/* decltype(nullptr) */
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
di->expansion += ret->u.s_builtin.type->len;
break;
default:
return NULL;
}
break;
default:
return NULL;
}
if (can_subst)
{
if (! d_add_substitution (di, ret))
return NULL;
}
return ret;
}
/* <CV-qualifiers> ::= [r] [V] [K] */
static struct demangle_component **
d_cv_qualifiers (struct d_info *di,
struct demangle_component **pret, int member_fn)
{
char peek;
peek = d_peek_char (di);
while (peek == 'r' || peek == 'V' || peek == 'K')
{
enum demangle_component_type t;
d_advance (di, 1);
if (peek == 'r')
{
t = (member_fn
? DEMANGLE_COMPONENT_RESTRICT_THIS
: DEMANGLE_COMPONENT_RESTRICT);
di->expansion += sizeof "restrict";
}
else if (peek == 'V')
{
t = (member_fn
? DEMANGLE_COMPONENT_VOLATILE_THIS
: DEMANGLE_COMPONENT_VOLATILE);
di->expansion += sizeof "volatile";
}
else
{
t = (member_fn
? DEMANGLE_COMPONENT_CONST_THIS
: DEMANGLE_COMPONENT_CONST);
di->expansion += sizeof "const";
}
*pret = d_make_comp (di, t, NULL, NULL);
if (*pret == NULL)
return NULL;
pret = &d_left (*pret);
peek = d_peek_char (di);
}
return pret;
}
/* <function-type> ::= F [Y] <bare-function-type> E */
static struct demangle_component *
d_function_type (struct d_info *di)
{
struct demangle_component *ret;
if (! d_check_char (di, 'F'))
return NULL;
if (d_peek_char (di) == 'Y')
{
/* Function has C linkage. We don't print this information.
FIXME: We should print it in verbose mode. */
d_advance (di, 1);
}
ret = d_bare_function_type (di, 1);
if (! d_check_char (di, 'E'))
return NULL;
return ret;
}
/* <type>+ */
static struct demangle_component *
d_parmlist (struct d_info *di)
{
struct demangle_component *tl;
struct demangle_component **ptl;
tl = NULL;
ptl = &tl;
while (1)
{
struct demangle_component *type;
char peek = d_peek_char (di);
if (peek == '\0' || peek == 'E')
break;
type = cplus_demangle_type (di);
if (type == NULL)
return NULL;
*ptl = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, type, NULL);
if (*ptl == NULL)
return NULL;
ptl = &d_right (*ptl);
}
/* There should be at least one parameter type besides the optional
return type. A function which takes no arguments will have a
single parameter type void. */
if (tl == NULL)
return NULL;
/* If we have a single parameter type void, omit it. */
if (d_right (tl) == NULL
&& d_left (tl)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE
&& d_left (tl)->u.s_builtin.type->print == D_PRINT_VOID)
{
di->expansion -= d_left (tl)->u.s_builtin.type->len;
d_left (tl) = NULL;
}
return tl;
}
/* <bare-function-type> ::= [J]<type>+ */
static struct demangle_component *
d_bare_function_type (struct d_info *di, int has_return_type)
{
struct demangle_component *return_type;
struct demangle_component *tl;
char peek;
/* Detect special qualifier indicating that the first argument
is the return type. */
peek = d_peek_char (di);
if (peek == 'J')
{
d_advance (di, 1);
has_return_type = 1;
}
if (has_return_type)
{
return_type = cplus_demangle_type (di);
if (return_type == NULL)
return NULL;
}
else
return_type = NULL;
tl = d_parmlist (di);
if (tl == NULL)
return NULL;
return d_make_comp (di, DEMANGLE_COMPONENT_FUNCTION_TYPE,
return_type, tl);
}
/* <class-enum-type> ::= <name> */
static struct demangle_component *
d_class_enum_type (struct d_info *di)
{
return d_name (di);
}
/* <array-type> ::= A <(positive dimension) number> _ <(element) type>
::= A [<(dimension) expression>] _ <(element) type>
*/
static struct demangle_component *
d_array_type (struct d_info *di)
{
char peek;
struct demangle_component *dim;
if (! d_check_char (di, 'A'))
return NULL;
peek = d_peek_char (di);
if (peek == '_')
dim = NULL;
else if (IS_DIGIT (peek))
{
const char *s;
s = d_str (di);
do
{
d_advance (di, 1);
peek = d_peek_char (di);
}
while (IS_DIGIT (peek));
dim = d_make_name (di, s, d_str (di) - s);
if (dim == NULL)
return NULL;
}
else
{
dim = d_expression (di);
if (dim == NULL)
return NULL;
}
if (! d_check_char (di, '_'))
return NULL;
return d_make_comp (di, DEMANGLE_COMPONENT_ARRAY_TYPE, dim,
cplus_demangle_type (di));
}
/* <vector-type> ::= Dv <number> _ <type>
::= Dv _ <expression> _ <type> */
static struct demangle_component *
d_vector_type (struct d_info *di)
{
char peek;
struct demangle_component *dim;
peek = d_peek_char (di);
if (peek == '_')
{
d_advance (di, 1);
dim = d_expression (di);
}
else
dim = d_number_component (di);
if (dim == NULL)
return NULL;
if (! d_check_char (di, '_'))
return NULL;
return d_make_comp (di, DEMANGLE_COMPONENT_VECTOR_TYPE, dim,
cplus_demangle_type (di));
}
/* <pointer-to-member-type> ::= M <(class) type> <(member) type> */
static struct demangle_component *
d_pointer_to_member_type (struct d_info *di)
{
struct demangle_component *cl;
struct demangle_component *mem;
struct demangle_component **pmem;
if (! d_check_char (di, 'M'))
return NULL;
cl = cplus_demangle_type (di);
/* The ABI specifies that any type can be a substitution source, and
that M is followed by two types, and that when a CV-qualified
type is seen both the base type and the CV-qualified types are
substitution sources. The ABI also specifies that for a pointer
to a CV-qualified member function, the qualifiers are attached to
the second type. Given the grammar, a plain reading of the ABI
suggests that both the CV-qualified member function and the
non-qualified member function are substitution sources. However,
g++ does not work that way. g++ treats only the CV-qualified
member function as a substitution source. FIXME. So to work
with g++, we need to pull off the CV-qualifiers here, in order to
avoid calling add_substitution() in cplus_demangle_type(). But
for a CV-qualified member which is not a function, g++ does
follow the ABI, so we need to handle that case here by calling
d_add_substitution ourselves. */
pmem = d_cv_qualifiers (di, &mem, 1);
if (pmem == NULL)
return NULL;
*pmem = cplus_demangle_type (di);
if (*pmem == NULL)
return NULL;
if (pmem != &mem && (*pmem)->type != DEMANGLE_COMPONENT_FUNCTION_TYPE)
{
if (! d_add_substitution (di, mem))
return NULL;
}
return d_make_comp (di, DEMANGLE_COMPONENT_PTRMEM_TYPE, cl, mem);
}
/* <non-negative number> _ */
static long
d_compact_number (struct d_info *di)
{
long num;
if (d_peek_char (di) == '_')
num = 0;
else if (d_peek_char (di) == 'n')
return -1;
else
num = d_number (di) + 1;
if (! d_check_char (di, '_'))
return -1;
return num;
}
/* <template-param> ::= T_
::= T <(parameter-2 non-negative) number> _
*/
static struct demangle_component *
d_template_param (struct d_info *di)
{
long param;
if (! d_check_char (di, 'T'))
return NULL;
param = d_compact_number (di);
if (param < 0)
return NULL;
++di->did_subs;
return d_make_template_param (di, param);
}
/* <template-args> ::= I <template-arg>+ E */
static struct demangle_component *
d_template_args (struct d_info *di)
{
struct demangle_component *hold_last_name;
struct demangle_component *al;
struct demangle_component **pal;
/* Preserve the last name we saw--don't let the template arguments
clobber it, as that would give us the wrong name for a subsequent
constructor or destructor. */
hold_last_name = di->last_name;
if (! d_check_char (di, 'I'))
return NULL;
if (d_peek_char (di) == 'E')
{
/* An argument pack can be empty. */
d_advance (di, 1);
return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, NULL, NULL);
}
al = NULL;
pal = &al;
while (1)
{
struct demangle_component *a;
a = d_template_arg (di);
if (a == NULL)
return NULL;
*pal = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, a, NULL);
if (*pal == NULL)
return NULL;
pal = &d_right (*pal);
if (d_peek_char (di) == 'E')
{
d_advance (di, 1);
break;
}
}
di->last_name = hold_last_name;
return al;
}
/* <template-arg> ::= <type>
::= X <expression> E
::= <expr-primary>
*/
static struct demangle_component *
d_template_arg (struct d_info *di)
{
struct demangle_component *ret;
switch (d_peek_char (di))
{
case 'X':
d_advance (di, 1);
ret = d_expression (di);
if (! d_check_char (di, 'E'))
return NULL;
return ret;
case 'L':
return d_expr_primary (di);
case 'I':
/* An argument pack. */
return d_template_args (di);
default:
return cplus_demangle_type (di);
}
}
/* Subroutine of <expression> ::= cl <expression>+ E */
static struct demangle_component *
d_exprlist (struct d_info *di)
{
struct demangle_component *list = NULL;
struct demangle_component **p = &list;
if (d_peek_char (di) == 'E')
{
d_advance (di, 1);
return d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, NULL, NULL);
}
while (1)
{
struct demangle_component *arg = d_expression (di);
if (arg == NULL)
return NULL;
*p = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, arg, NULL);
if (*p == NULL)
return NULL;
p = &d_right (*p);
if (d_peek_char (di) == 'E')
{
d_advance (di, 1);
break;
}
}
return list;
}
/* <expression> ::= <(unary) operator-name> <expression>
::= <(binary) operator-name> <expression> <expression>
::= <(trinary) operator-name> <expression> <expression> <expression>
::= cl <expression>+ E
::= st <type>
::= <template-param>
::= sr <type> <unqualified-name>
::= sr <type> <unqualified-name> <template-args>
::= <expr-primary>
*/
static struct demangle_component *
d_expression (struct d_info *di)
{
char peek;
peek = d_peek_char (di);
if (peek == 'L')
return d_expr_primary (di);
else if (peek == 'T')
return d_template_param (di);
else if (peek == 's' && d_peek_next_char (di) == 'r')
{
struct demangle_component *type;
struct demangle_component *name;
d_advance (di, 2);
type = cplus_demangle_type (di);
name = d_unqualified_name (di);
if (d_peek_char (di) != 'I')
return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, name);
else
return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type,
d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
d_template_args (di)));
}
else if (peek == 's' && d_peek_next_char (di) == 'p')
{
d_advance (di, 2);
return d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION,
d_expression (di), NULL);
}
else if (peek == 'f' && d_peek_next_char (di) == 'p')
{
/* Function parameter used in a late-specified return type. */
int index;
d_advance (di, 2);
index = d_compact_number (di);
if (index < 0)
return NULL;
return d_make_function_param (di, index);
}
else if (IS_DIGIT (peek)
|| (peek == 'o' && d_peek_next_char (di) == 'n'))
{
/* We can get an unqualified name as an expression in the case of
a dependent function call, i.e. decltype(f(t)). */
struct demangle_component *name;
if (peek == 'o')
/* operator-function-id, i.e. operator+(t). */
d_advance (di, 2);
name = d_unqualified_name (di);
if (name == NULL)
return NULL;
if (d_peek_char (di) == 'I')
return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
d_template_args (di));
else
return name;
}
else
{
struct demangle_component *op;
int args;
op = d_operator_name (di);
if (op == NULL)
return NULL;
if (op->type == DEMANGLE_COMPONENT_OPERATOR)
di->expansion += op->u.s_operator.op->len - 2;
if (op->type == DEMANGLE_COMPONENT_OPERATOR
&& strcmp (op->u.s_operator.op->code, "st") == 0)
return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
cplus_demangle_type (di));
switch (op->type)
{
default:
return NULL;
case DEMANGLE_COMPONENT_OPERATOR:
args = op->u.s_operator.op->args;
break;
case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
args = op->u.s_extended_operator.args;
break;
case DEMANGLE_COMPONENT_CAST:
args = 1;
break;
}
switch (args)
{
case 1:
{
struct demangle_component *operand;
if (op->type == DEMANGLE_COMPONENT_CAST
&& d_check_char (di, '_'))
operand = d_exprlist (di);
else
operand = d_expression (di);
return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
operand);
}
case 2:
{
struct demangle_component *left;
struct demangle_component *right;
const char *code = op->u.s_operator.op->code;
left = d_expression (di);
if (!strcmp (code, "cl"))
right = d_exprlist (di);
else if (!strcmp (code, "dt") || !strcmp (code, "pt"))
{
right = d_unqualified_name (di);
if (d_peek_char (di) == 'I')
right = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE,
right, d_template_args (di));
}
else
right = d_expression (di);
return d_make_comp (di, DEMANGLE_COMPONENT_BINARY, op,
d_make_comp (di,
DEMANGLE_COMPONENT_BINARY_ARGS,
left, right));
}
case 3:
{
struct demangle_component *first;
struct demangle_component *second;
first = d_expression (di);
second = d_expression (di);
return d_make_comp (di, DEMANGLE_COMPONENT_TRINARY, op,
d_make_comp (di,
DEMANGLE_COMPONENT_TRINARY_ARG1,
first,
d_make_comp (di,
DEMANGLE_COMPONENT_TRINARY_ARG2,
second,
d_expression (di))));
}
default:
return NULL;
}
}