2244 lines
56 KiB
Plaintext
2244 lines
56 KiB
Plaintext
/* YACC parser for C++ names, for GDB.
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Copyright (C) 2003-2016 Free Software Foundation, Inc.
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Parts of the lexer are based on c-exp.y from GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Note that malloc's and realloc's in this file are transformed to
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xmalloc and xrealloc respectively by the same sed command in the
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makefile that remaps any other malloc/realloc inserted by the parser
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generator. Doing this with #defines and trying to control the interaction
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with include files (<malloc.h> and <stdlib.h> for example) just became
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too messy, particularly when such includes can be inserted at random
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times by the parser generator. */
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%{
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#include "defs.h"
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#include <unistd.h>
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#include "safe-ctype.h"
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#include "demangle.h"
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#include "cp-support.h"
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/* Bison does not make it easy to create a parser without global
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state, unfortunately. Here are all the global variables used
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in this parser. */
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/* LEXPTR is the current pointer into our lex buffer. PREV_LEXPTR
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is the start of the last token lexed, only used for diagnostics.
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ERROR_LEXPTR is the first place an error occurred. GLOBAL_ERRMSG
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is the first error message encountered. */
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static const char *lexptr, *prev_lexptr, *error_lexptr, *global_errmsg;
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/* The components built by the parser are allocated ahead of time,
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and cached in this structure. */
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#define ALLOC_CHUNK 100
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struct demangle_info {
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int used;
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struct demangle_info *next;
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struct demangle_component comps[ALLOC_CHUNK];
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};
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static struct demangle_info *demangle_info;
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static struct demangle_component *
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d_grab (void)
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{
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struct demangle_info *more;
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if (demangle_info->used >= ALLOC_CHUNK)
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{
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if (demangle_info->next == NULL)
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{
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more = XNEW (struct demangle_info);
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more->next = NULL;
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demangle_info->next = more;
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}
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else
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more = demangle_info->next;
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more->used = 0;
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demangle_info = more;
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}
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return &demangle_info->comps[demangle_info->used++];
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}
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/* The parse tree created by the parser is stored here after a successful
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parse. */
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static struct demangle_component *global_result;
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/* Prototypes for helper functions used when constructing the parse
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tree. */
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static struct demangle_component *d_qualify (struct demangle_component *, int,
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int);
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static struct demangle_component *d_int_type (int);
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static struct demangle_component *d_unary (const char *,
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struct demangle_component *);
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static struct demangle_component *d_binary (const char *,
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struct demangle_component *,
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struct demangle_component *);
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/* Flags passed to d_qualify. */
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#define QUAL_CONST 1
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#define QUAL_RESTRICT 2
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#define QUAL_VOLATILE 4
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/* Flags passed to d_int_type. */
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#define INT_CHAR (1 << 0)
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#define INT_SHORT (1 << 1)
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#define INT_LONG (1 << 2)
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#define INT_LLONG (1 << 3)
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#define INT_SIGNED (1 << 4)
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#define INT_UNSIGNED (1 << 5)
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/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
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as well as gratuitiously global symbol names, so we can have multiple
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yacc generated parsers in gdb. Note that these are only the variables
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produced by yacc. If other parser generators (bison, byacc, etc) produce
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additional global names that conflict at link time, then those parser
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generators need to be fixed instead of adding those names to this list. */
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#define yymaxdepth cpname_maxdepth
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#define yyparse cpname_parse
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#define yylex cpname_lex
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#define yyerror cpname_error
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#define yylval cpname_lval
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#define yychar cpname_char
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#define yydebug cpname_debug
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#define yypact cpname_pact
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#define yyr1 cpname_r1
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#define yyr2 cpname_r2
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#define yydef cpname_def
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#define yychk cpname_chk
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#define yypgo cpname_pgo
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#define yyact cpname_act
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#define yyexca cpname_exca
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#define yyerrflag cpname_errflag
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#define yynerrs cpname_nerrs
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#define yyps cpname_ps
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#define yypv cpname_pv
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#define yys cpname_s
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#define yy_yys cpname_yys
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#define yystate cpname_state
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#define yytmp cpname_tmp
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#define yyv cpname_v
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#define yy_yyv cpname_yyv
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#define yyval cpname_val
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#define yylloc cpname_lloc
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#define yyreds cpname_reds /* With YYDEBUG defined */
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#define yytoks cpname_toks /* With YYDEBUG defined */
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#define yyname cpname_name /* With YYDEBUG defined */
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#define yyrule cpname_rule /* With YYDEBUG defined */
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#define yylhs cpname_yylhs
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#define yylen cpname_yylen
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#define yydefred cpname_yydefred
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#define yydgoto cpname_yydgoto
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#define yysindex cpname_yysindex
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#define yyrindex cpname_yyrindex
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#define yygindex cpname_yygindex
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#define yytable cpname_yytable
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#define yycheck cpname_yycheck
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#define yyss cpname_yyss
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#define yysslim cpname_yysslim
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#define yyssp cpname_yyssp
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#define yystacksize cpname_yystacksize
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#define yyvs cpname_yyvs
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#define yyvsp cpname_yyvsp
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int yyparse (void);
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static int yylex (void);
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static void yyerror (char *);
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/* Enable yydebug for the stand-alone parser. */
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#ifdef TEST_CPNAMES
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# define YYDEBUG 1
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#endif
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/* Helper functions. These wrap the demangler tree interface, handle
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allocation from our global store, and return the allocated component. */
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static struct demangle_component *
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fill_comp (enum demangle_component_type d_type, struct demangle_component *lhs,
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struct demangle_component *rhs)
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{
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struct demangle_component *ret = d_grab ();
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int i;
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i = cplus_demangle_fill_component (ret, d_type, lhs, rhs);
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gdb_assert (i);
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return ret;
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}
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static struct demangle_component *
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make_empty (enum demangle_component_type d_type)
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{
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struct demangle_component *ret = d_grab ();
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ret->type = d_type;
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return ret;
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}
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static struct demangle_component *
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make_operator (const char *name, int args)
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{
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struct demangle_component *ret = d_grab ();
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int i;
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i = cplus_demangle_fill_operator (ret, name, args);
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gdb_assert (i);
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return ret;
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}
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static struct demangle_component *
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make_dtor (enum gnu_v3_dtor_kinds kind, struct demangle_component *name)
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{
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struct demangle_component *ret = d_grab ();
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int i;
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i = cplus_demangle_fill_dtor (ret, kind, name);
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gdb_assert (i);
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return ret;
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}
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static struct demangle_component *
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make_builtin_type (const char *name)
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{
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struct demangle_component *ret = d_grab ();
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int i;
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i = cplus_demangle_fill_builtin_type (ret, name);
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gdb_assert (i);
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return ret;
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}
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static struct demangle_component *
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make_name (const char *name, int len)
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{
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struct demangle_component *ret = d_grab ();
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int i;
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i = cplus_demangle_fill_name (ret, name, len);
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gdb_assert (i);
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return ret;
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}
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#define d_left(dc) (dc)->u.s_binary.left
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#define d_right(dc) (dc)->u.s_binary.right
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%}
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%union
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{
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struct demangle_component *comp;
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struct nested {
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struct demangle_component *comp;
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struct demangle_component **last;
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} nested;
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struct {
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struct demangle_component *comp, *last;
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} nested1;
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struct {
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struct demangle_component *comp, **last;
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struct nested fn;
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struct demangle_component *start;
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int fold_flag;
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} abstract;
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int lval;
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const char *opname;
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}
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%type <comp> exp exp1 type start start_opt oper colon_name
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%type <comp> unqualified_name colon_ext_name
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%type <comp> templ template_arg
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%type <comp> builtin_type
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%type <comp> typespec_2 array_indicator
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%type <comp> colon_ext_only ext_only_name
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%type <comp> demangler_special function conversion_op
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%type <nested> conversion_op_name
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%type <abstract> abstract_declarator direct_abstract_declarator
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%type <abstract> abstract_declarator_fn
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%type <nested> declarator direct_declarator function_arglist
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%type <nested> declarator_1 direct_declarator_1
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%type <nested> template_params function_args
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%type <nested> ptr_operator
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%type <nested1> nested_name
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%type <lval> qualifier qualifiers qualifiers_opt
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%type <lval> int_part int_seq
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%token <comp> INT
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%token <comp> FLOAT
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%token <comp> NAME
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%type <comp> name
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%token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON
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%token TEMPLATE
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%token ERROR
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%token NEW DELETE OPERATOR
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%token STATIC_CAST REINTERPRET_CAST DYNAMIC_CAST
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/* Special type cases, put in to allow the parser to distinguish different
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legal basetypes. */
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%token SIGNED_KEYWORD LONG SHORT INT_KEYWORD CONST_KEYWORD VOLATILE_KEYWORD DOUBLE_KEYWORD BOOL
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%token ELLIPSIS RESTRICT VOID FLOAT_KEYWORD CHAR WCHAR_T
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%token <opname> ASSIGN_MODIFY
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/* C++ */
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%token TRUEKEYWORD
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%token FALSEKEYWORD
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/* Non-C++ things we get from the demangler. */
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%token <lval> DEMANGLER_SPECIAL
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%token CONSTRUCTION_VTABLE CONSTRUCTION_IN
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/* Precedence declarations. */
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/* Give NAME lower precedence than COLONCOLON, so that nested_name will
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associate greedily. */
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%nonassoc NAME
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/* Give NEW and DELETE lower precedence than ']', because we can not
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have an array of type operator new. This causes NEW '[' to be
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parsed as operator new[]. */
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%nonassoc NEW DELETE
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/* Give VOID higher precedence than NAME. Then we can use %prec NAME
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to prefer (VOID) to (function_args). */
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%nonassoc VOID
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/* Give VOID lower precedence than ')' for similar reasons. */
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%nonassoc ')'
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%left ','
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%right '=' ASSIGN_MODIFY
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%right '?'
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%left OROR
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%left ANDAND
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%left '|'
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%left '^'
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%left '&'
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%left EQUAL NOTEQUAL
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%left '<' '>' LEQ GEQ
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%left LSH RSH
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%left '@'
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%left '+' '-'
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%left '*' '/' '%'
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%right UNARY INCREMENT DECREMENT
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/* We don't need a precedence for '(' in this reduced grammar, and it
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can mask some unpleasant bugs, so disable it for now. */
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%right ARROW '.' '[' /* '(' */
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%left COLONCOLON
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%%
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result : start
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{ global_result = $1; }
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;
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start : type
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| demangler_special
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| function
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;
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start_opt : /* */
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{ $$ = NULL; }
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| COLONCOLON start
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{ $$ = $2; }
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;
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function
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/* Function with a return type. declarator_1 is used to prevent
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ambiguity with the next rule. */
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: typespec_2 declarator_1
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{ $$ = $2.comp;
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*$2.last = $1;
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}
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/* Function without a return type. We need to use typespec_2
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to prevent conflicts from qualifiers_opt - harmless. The
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start_opt is used to handle "function-local" variables and
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types. */
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| typespec_2 function_arglist start_opt
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{ $$ = fill_comp (DEMANGLE_COMPONENT_TYPED_NAME, $1, $2.comp);
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if ($3) $$ = fill_comp (DEMANGLE_COMPONENT_LOCAL_NAME, $$, $3); }
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| colon_ext_only function_arglist start_opt
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{ $$ = fill_comp (DEMANGLE_COMPONENT_TYPED_NAME, $1, $2.comp);
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if ($3) $$ = fill_comp (DEMANGLE_COMPONENT_LOCAL_NAME, $$, $3); }
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| conversion_op_name start_opt
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{ $$ = $1.comp;
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if ($2) $$ = fill_comp (DEMANGLE_COMPONENT_LOCAL_NAME, $$, $2); }
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| conversion_op_name abstract_declarator_fn
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{ if ($2.last)
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{
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/* First complete the abstract_declarator's type using
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the typespec from the conversion_op_name. */
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*$2.last = *$1.last;
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/* Then complete the conversion_op_name with the type. */
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*$1.last = $2.comp;
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}
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/* If we have an arglist, build a function type. */
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if ($2.fn.comp)
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$$ = fill_comp (DEMANGLE_COMPONENT_TYPED_NAME, $1.comp, $2.fn.comp);
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else
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$$ = $1.comp;
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if ($2.start) $$ = fill_comp (DEMANGLE_COMPONENT_LOCAL_NAME, $$, $2.start);
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}
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;
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demangler_special
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: DEMANGLER_SPECIAL start
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{ $$ = make_empty ((enum demangle_component_type) $1);
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d_left ($$) = $2;
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d_right ($$) = NULL; }
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| CONSTRUCTION_VTABLE start CONSTRUCTION_IN start
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{ $$ = fill_comp (DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE, $2, $4); }
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;
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oper : OPERATOR NEW
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{
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/* Match the whitespacing of cplus_demangle_operators.
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It would abort on unrecognized string otherwise. */
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$$ = make_operator ("new", 3);
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}
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| OPERATOR DELETE
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{
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/* Match the whitespacing of cplus_demangle_operators.
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It would abort on unrecognized string otherwise. */
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$$ = make_operator ("delete ", 1);
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}
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| OPERATOR NEW '[' ']'
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{
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/* Match the whitespacing of cplus_demangle_operators.
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It would abort on unrecognized string otherwise. */
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$$ = make_operator ("new[]", 3);
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}
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| OPERATOR DELETE '[' ']'
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{
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/* Match the whitespacing of cplus_demangle_operators.
|
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It would abort on unrecognized string otherwise. */
|
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$$ = make_operator ("delete[] ", 1);
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}
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| OPERATOR '+'
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{ $$ = make_operator ("+", 2); }
|
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| OPERATOR '-'
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{ $$ = make_operator ("-", 2); }
|
||
| OPERATOR '*'
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{ $$ = make_operator ("*", 2); }
|
||
| OPERATOR '/'
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{ $$ = make_operator ("/", 2); }
|
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| OPERATOR '%'
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{ $$ = make_operator ("%", 2); }
|
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| OPERATOR '^'
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{ $$ = make_operator ("^", 2); }
|
||
| OPERATOR '&'
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{ $$ = make_operator ("&", 2); }
|
||
| OPERATOR '|'
|
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{ $$ = make_operator ("|", 2); }
|
||
| OPERATOR '~'
|
||
{ $$ = make_operator ("~", 1); }
|
||
| OPERATOR '!'
|
||
{ $$ = make_operator ("!", 1); }
|
||
| OPERATOR '='
|
||
{ $$ = make_operator ("=", 2); }
|
||
| OPERATOR '<'
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||
{ $$ = make_operator ("<", 2); }
|
||
| OPERATOR '>'
|
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{ $$ = make_operator (">", 2); }
|
||
| OPERATOR ASSIGN_MODIFY
|
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{ $$ = make_operator ($2, 2); }
|
||
| OPERATOR LSH
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||
{ $$ = make_operator ("<<", 2); }
|
||
| OPERATOR RSH
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||
{ $$ = make_operator (">>", 2); }
|
||
| OPERATOR EQUAL
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{ $$ = make_operator ("==", 2); }
|
||
| OPERATOR NOTEQUAL
|
||
{ $$ = make_operator ("!=", 2); }
|
||
| OPERATOR LEQ
|
||
{ $$ = make_operator ("<=", 2); }
|
||
| OPERATOR GEQ
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||
{ $$ = make_operator (">=", 2); }
|
||
| OPERATOR ANDAND
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||
{ $$ = make_operator ("&&", 2); }
|
||
| OPERATOR OROR
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||
{ $$ = make_operator ("||", 2); }
|
||
| OPERATOR INCREMENT
|
||
{ $$ = make_operator ("++", 1); }
|
||
| OPERATOR DECREMENT
|
||
{ $$ = make_operator ("--", 1); }
|
||
| OPERATOR ','
|
||
{ $$ = make_operator (",", 2); }
|
||
| OPERATOR ARROW '*'
|
||
{ $$ = make_operator ("->*", 2); }
|
||
| OPERATOR ARROW
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||
{ $$ = make_operator ("->", 2); }
|
||
| OPERATOR '(' ')'
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{ $$ = make_operator ("()", 2); }
|
||
| OPERATOR '[' ']'
|
||
{ $$ = make_operator ("[]", 2); }
|
||
;
|
||
|
||
/* Conversion operators. We don't try to handle some of
|
||
the wackier demangler output for function pointers,
|
||
since it's not clear that it's parseable. */
|
||
conversion_op
|
||
: OPERATOR typespec_2
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_CONVERSION, $2, NULL); }
|
||
;
|
||
|
||
conversion_op_name
|
||
: nested_name conversion_op
|
||
{ $$.comp = $1.comp;
|
||
d_right ($1.last) = $2;
|
||
$$.last = &d_left ($2);
|
||
}
|
||
| conversion_op
|
||
{ $$.comp = $1;
|
||
$$.last = &d_left ($1);
|
||
}
|
||
| COLONCOLON nested_name conversion_op
|
||
{ $$.comp = $2.comp;
|
||
d_right ($2.last) = $3;
|
||
$$.last = &d_left ($3);
|
||
}
|
||
| COLONCOLON conversion_op
|
||
{ $$.comp = $2;
|
||
$$.last = &d_left ($2);
|
||
}
|
||
;
|
||
|
||
/* DEMANGLE_COMPONENT_NAME */
|
||
/* This accepts certain invalid placements of '~'. */
|
||
unqualified_name: oper
|
||
| oper '<' template_params '>'
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_TEMPLATE, $1, $3.comp); }
|
||
| '~' NAME
|
||
{ $$ = make_dtor (gnu_v3_complete_object_dtor, $2); }
|
||
;
|
||
|
||
/* This rule is used in name and nested_name, and expanded inline there
|
||
for efficiency. */
|
||
/*
|
||
scope_id : NAME
|
||
| template
|
||
;
|
||
*/
|
||
|
||
colon_name : name
|
||
| COLONCOLON name
|
||
{ $$ = $2; }
|
||
;
|
||
|
||
/* DEMANGLE_COMPONENT_QUAL_NAME */
|
||
/* DEMANGLE_COMPONENT_CTOR / DEMANGLE_COMPONENT_DTOR ? */
|
||
name : nested_name NAME %prec NAME
|
||
{ $$ = $1.comp; d_right ($1.last) = $2; }
|
||
| NAME %prec NAME
|
||
| nested_name templ %prec NAME
|
||
{ $$ = $1.comp; d_right ($1.last) = $2; }
|
||
| templ %prec NAME
|
||
;
|
||
|
||
colon_ext_name : colon_name
|
||
| colon_ext_only
|
||
;
|
||
|
||
colon_ext_only : ext_only_name
|
||
| COLONCOLON ext_only_name
|
||
{ $$ = $2; }
|
||
;
|
||
|
||
ext_only_name : nested_name unqualified_name
|
||
{ $$ = $1.comp; d_right ($1.last) = $2; }
|
||
| unqualified_name
|
||
;
|
||
|
||
nested_name : NAME COLONCOLON
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_QUAL_NAME);
|
||
d_left ($$.comp) = $1;
|
||
d_right ($$.comp) = NULL;
|
||
$$.last = $$.comp;
|
||
}
|
||
| nested_name NAME COLONCOLON
|
||
{ $$.comp = $1.comp;
|
||
d_right ($1.last) = make_empty (DEMANGLE_COMPONENT_QUAL_NAME);
|
||
$$.last = d_right ($1.last);
|
||
d_left ($$.last) = $2;
|
||
d_right ($$.last) = NULL;
|
||
}
|
||
| templ COLONCOLON
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_QUAL_NAME);
|
||
d_left ($$.comp) = $1;
|
||
d_right ($$.comp) = NULL;
|
||
$$.last = $$.comp;
|
||
}
|
||
| nested_name templ COLONCOLON
|
||
{ $$.comp = $1.comp;
|
||
d_right ($1.last) = make_empty (DEMANGLE_COMPONENT_QUAL_NAME);
|
||
$$.last = d_right ($1.last);
|
||
d_left ($$.last) = $2;
|
||
d_right ($$.last) = NULL;
|
||
}
|
||
;
|
||
|
||
/* DEMANGLE_COMPONENT_TEMPLATE */
|
||
/* DEMANGLE_COMPONENT_TEMPLATE_ARGLIST */
|
||
templ : NAME '<' template_params '>'
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_TEMPLATE, $1, $3.comp); }
|
||
;
|
||
|
||
template_params : template_arg
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, $1, NULL);
|
||
$$.last = &d_right ($$.comp); }
|
||
| template_params ',' template_arg
|
||
{ $$.comp = $1.comp;
|
||
*$1.last = fill_comp (DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, $3, NULL);
|
||
$$.last = &d_right (*$1.last);
|
||
}
|
||
;
|
||
|
||
/* "type" is inlined into template_arg and function_args. */
|
||
|
||
/* Also an integral constant-expression of integral type, and a
|
||
pointer to member (?) */
|
||
template_arg : typespec_2
|
||
| typespec_2 abstract_declarator
|
||
{ $$ = $2.comp;
|
||
*$2.last = $1;
|
||
}
|
||
| '&' start
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY, make_operator ("&", 1), $2); }
|
||
| '&' '(' start ')'
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY, make_operator ("&", 1), $3); }
|
||
| exp
|
||
;
|
||
|
||
function_args : typespec_2
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_ARGLIST, $1, NULL);
|
||
$$.last = &d_right ($$.comp);
|
||
}
|
||
| typespec_2 abstract_declarator
|
||
{ *$2.last = $1;
|
||
$$.comp = fill_comp (DEMANGLE_COMPONENT_ARGLIST, $2.comp, NULL);
|
||
$$.last = &d_right ($$.comp);
|
||
}
|
||
| function_args ',' typespec_2
|
||
{ *$1.last = fill_comp (DEMANGLE_COMPONENT_ARGLIST, $3, NULL);
|
||
$$.comp = $1.comp;
|
||
$$.last = &d_right (*$1.last);
|
||
}
|
||
| function_args ',' typespec_2 abstract_declarator
|
||
{ *$4.last = $3;
|
||
*$1.last = fill_comp (DEMANGLE_COMPONENT_ARGLIST, $4.comp, NULL);
|
||
$$.comp = $1.comp;
|
||
$$.last = &d_right (*$1.last);
|
||
}
|
||
| function_args ',' ELLIPSIS
|
||
{ *$1.last
|
||
= fill_comp (DEMANGLE_COMPONENT_ARGLIST,
|
||
make_builtin_type ("..."),
|
||
NULL);
|
||
$$.comp = $1.comp;
|
||
$$.last = &d_right (*$1.last);
|
||
}
|
||
;
|
||
|
||
function_arglist: '(' function_args ')' qualifiers_opt %prec NAME
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_FUNCTION_TYPE, NULL, $2.comp);
|
||
$$.last = &d_left ($$.comp);
|
||
$$.comp = d_qualify ($$.comp, $4, 1); }
|
||
| '(' VOID ')' qualifiers_opt
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_FUNCTION_TYPE, NULL, NULL);
|
||
$$.last = &d_left ($$.comp);
|
||
$$.comp = d_qualify ($$.comp, $4, 1); }
|
||
| '(' ')' qualifiers_opt
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_FUNCTION_TYPE, NULL, NULL);
|
||
$$.last = &d_left ($$.comp);
|
||
$$.comp = d_qualify ($$.comp, $3, 1); }
|
||
;
|
||
|
||
/* Should do something about DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL */
|
||
qualifiers_opt : /* epsilon */
|
||
{ $$ = 0; }
|
||
| qualifiers
|
||
;
|
||
|
||
qualifier : RESTRICT
|
||
{ $$ = QUAL_RESTRICT; }
|
||
| VOLATILE_KEYWORD
|
||
{ $$ = QUAL_VOLATILE; }
|
||
| CONST_KEYWORD
|
||
{ $$ = QUAL_CONST; }
|
||
;
|
||
|
||
qualifiers : qualifier
|
||
| qualifier qualifiers
|
||
{ $$ = $1 | $2; }
|
||
;
|
||
|
||
/* This accepts all sorts of invalid constructions and produces
|
||
invalid output for them - an error would be better. */
|
||
|
||
int_part : INT_KEYWORD
|
||
{ $$ = 0; }
|
||
| SIGNED_KEYWORD
|
||
{ $$ = INT_SIGNED; }
|
||
| UNSIGNED
|
||
{ $$ = INT_UNSIGNED; }
|
||
| CHAR
|
||
{ $$ = INT_CHAR; }
|
||
| LONG
|
||
{ $$ = INT_LONG; }
|
||
| SHORT
|
||
{ $$ = INT_SHORT; }
|
||
;
|
||
|
||
int_seq : int_part
|
||
| int_seq int_part
|
||
{ $$ = $1 | $2; if ($1 & $2 & INT_LONG) $$ = $1 | INT_LLONG; }
|
||
;
|
||
|
||
builtin_type : int_seq
|
||
{ $$ = d_int_type ($1); }
|
||
| FLOAT_KEYWORD
|
||
{ $$ = make_builtin_type ("float"); }
|
||
| DOUBLE_KEYWORD
|
||
{ $$ = make_builtin_type ("double"); }
|
||
| LONG DOUBLE_KEYWORD
|
||
{ $$ = make_builtin_type ("long double"); }
|
||
| BOOL
|
||
{ $$ = make_builtin_type ("bool"); }
|
||
| WCHAR_T
|
||
{ $$ = make_builtin_type ("wchar_t"); }
|
||
| VOID
|
||
{ $$ = make_builtin_type ("void"); }
|
||
;
|
||
|
||
ptr_operator : '*' qualifiers_opt
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_POINTER);
|
||
$$.comp->u.s_binary.left = $$.comp->u.s_binary.right = NULL;
|
||
$$.last = &d_left ($$.comp);
|
||
$$.comp = d_qualify ($$.comp, $2, 0); }
|
||
/* g++ seems to allow qualifiers after the reference? */
|
||
| '&'
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_REFERENCE);
|
||
$$.comp->u.s_binary.left = $$.comp->u.s_binary.right = NULL;
|
||
$$.last = &d_left ($$.comp); }
|
||
| nested_name '*' qualifiers_opt
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_PTRMEM_TYPE);
|
||
$$.comp->u.s_binary.left = $1.comp;
|
||
/* Convert the innermost DEMANGLE_COMPONENT_QUAL_NAME to a DEMANGLE_COMPONENT_NAME. */
|
||
*$1.last = *d_left ($1.last);
|
||
$$.comp->u.s_binary.right = NULL;
|
||
$$.last = &d_right ($$.comp);
|
||
$$.comp = d_qualify ($$.comp, $3, 0); }
|
||
| COLONCOLON nested_name '*' qualifiers_opt
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_PTRMEM_TYPE);
|
||
$$.comp->u.s_binary.left = $2.comp;
|
||
/* Convert the innermost DEMANGLE_COMPONENT_QUAL_NAME to a DEMANGLE_COMPONENT_NAME. */
|
||
*$2.last = *d_left ($2.last);
|
||
$$.comp->u.s_binary.right = NULL;
|
||
$$.last = &d_right ($$.comp);
|
||
$$.comp = d_qualify ($$.comp, $4, 0); }
|
||
;
|
||
|
||
array_indicator : '[' ']'
|
||
{ $$ = make_empty (DEMANGLE_COMPONENT_ARRAY_TYPE);
|
||
d_left ($$) = NULL;
|
||
}
|
||
| '[' INT ']'
|
||
{ $$ = make_empty (DEMANGLE_COMPONENT_ARRAY_TYPE);
|
||
d_left ($$) = $2;
|
||
}
|
||
;
|
||
|
||
/* Details of this approach inspired by the G++ < 3.4 parser. */
|
||
|
||
/* This rule is only used in typespec_2, and expanded inline there for
|
||
efficiency. */
|
||
/*
|
||
typespec : builtin_type
|
||
| colon_name
|
||
;
|
||
*/
|
||
|
||
typespec_2 : builtin_type qualifiers
|
||
{ $$ = d_qualify ($1, $2, 0); }
|
||
| builtin_type
|
||
| qualifiers builtin_type qualifiers
|
||
{ $$ = d_qualify ($2, $1 | $3, 0); }
|
||
| qualifiers builtin_type
|
||
{ $$ = d_qualify ($2, $1, 0); }
|
||
|
||
| name qualifiers
|
||
{ $$ = d_qualify ($1, $2, 0); }
|
||
| name
|
||
| qualifiers name qualifiers
|
||
{ $$ = d_qualify ($2, $1 | $3, 0); }
|
||
| qualifiers name
|
||
{ $$ = d_qualify ($2, $1, 0); }
|
||
|
||
| COLONCOLON name qualifiers
|
||
{ $$ = d_qualify ($2, $3, 0); }
|
||
| COLONCOLON name
|
||
{ $$ = $2; }
|
||
| qualifiers COLONCOLON name qualifiers
|
||
{ $$ = d_qualify ($3, $1 | $4, 0); }
|
||
| qualifiers COLONCOLON name
|
||
{ $$ = d_qualify ($3, $1, 0); }
|
||
;
|
||
|
||
abstract_declarator
|
||
: ptr_operator
|
||
{ $$.comp = $1.comp; $$.last = $1.last;
|
||
$$.fn.comp = NULL; $$.fn.last = NULL; }
|
||
| ptr_operator abstract_declarator
|
||
{ $$ = $2; $$.fn.comp = NULL; $$.fn.last = NULL;
|
||
if ($2.fn.comp) { $$.last = $2.fn.last; *$2.last = $2.fn.comp; }
|
||
*$$.last = $1.comp;
|
||
$$.last = $1.last; }
|
||
| direct_abstract_declarator
|
||
{ $$.fn.comp = NULL; $$.fn.last = NULL;
|
||
if ($1.fn.comp) { $$.last = $1.fn.last; *$1.last = $1.fn.comp; }
|
||
}
|
||
;
|
||
|
||
direct_abstract_declarator
|
||
: '(' abstract_declarator ')'
|
||
{ $$ = $2; $$.fn.comp = NULL; $$.fn.last = NULL; $$.fold_flag = 1;
|
||
if ($2.fn.comp) { $$.last = $2.fn.last; *$2.last = $2.fn.comp; }
|
||
}
|
||
| direct_abstract_declarator function_arglist
|
||
{ $$.fold_flag = 0;
|
||
if ($1.fn.comp) { $$.last = $1.fn.last; *$1.last = $1.fn.comp; }
|
||
if ($1.fold_flag)
|
||
{
|
||
*$$.last = $2.comp;
|
||
$$.last = $2.last;
|
||
}
|
||
else
|
||
$$.fn = $2;
|
||
}
|
||
| direct_abstract_declarator array_indicator
|
||
{ $$.fn.comp = NULL; $$.fn.last = NULL; $$.fold_flag = 0;
|
||
if ($1.fn.comp) { $$.last = $1.fn.last; *$1.last = $1.fn.comp; }
|
||
*$1.last = $2;
|
||
$$.last = &d_right ($2);
|
||
}
|
||
| array_indicator
|
||
{ $$.fn.comp = NULL; $$.fn.last = NULL; $$.fold_flag = 0;
|
||
$$.comp = $1;
|
||
$$.last = &d_right ($1);
|
||
}
|
||
/* G++ has the following except for () and (type). Then
|
||
(type) is handled in regcast_or_absdcl and () is handled
|
||
in fcast_or_absdcl.
|
||
|
||
However, this is only useful for function types, and
|
||
generates reduce/reduce conflicts with direct_declarator.
|
||
We're interested in pointer-to-function types, and in
|
||
functions, but not in function types - so leave this
|
||
out. */
|
||
/* | function_arglist */
|
||
;
|
||
|
||
abstract_declarator_fn
|
||
: ptr_operator
|
||
{ $$.comp = $1.comp; $$.last = $1.last;
|
||
$$.fn.comp = NULL; $$.fn.last = NULL; $$.start = NULL; }
|
||
| ptr_operator abstract_declarator_fn
|
||
{ $$ = $2;
|
||
if ($2.last)
|
||
*$$.last = $1.comp;
|
||
else
|
||
$$.comp = $1.comp;
|
||
$$.last = $1.last;
|
||
}
|
||
| direct_abstract_declarator
|
||
{ $$.comp = $1.comp; $$.last = $1.last; $$.fn = $1.fn; $$.start = NULL; }
|
||
| direct_abstract_declarator function_arglist COLONCOLON start
|
||
{ $$.start = $4;
|
||
if ($1.fn.comp) { $$.last = $1.fn.last; *$1.last = $1.fn.comp; }
|
||
if ($1.fold_flag)
|
||
{
|
||
*$$.last = $2.comp;
|
||
$$.last = $2.last;
|
||
}
|
||
else
|
||
$$.fn = $2;
|
||
}
|
||
| function_arglist start_opt
|
||
{ $$.fn = $1;
|
||
$$.start = $2;
|
||
$$.comp = NULL; $$.last = NULL;
|
||
}
|
||
;
|
||
|
||
type : typespec_2
|
||
| typespec_2 abstract_declarator
|
||
{ $$ = $2.comp;
|
||
*$2.last = $1;
|
||
}
|
||
;
|
||
|
||
declarator : ptr_operator declarator
|
||
{ $$.comp = $2.comp;
|
||
$$.last = $1.last;
|
||
*$2.last = $1.comp; }
|
||
| direct_declarator
|
||
;
|
||
|
||
direct_declarator
|
||
: '(' declarator ')'
|
||
{ $$ = $2; }
|
||
| direct_declarator function_arglist
|
||
{ $$.comp = $1.comp;
|
||
*$1.last = $2.comp;
|
||
$$.last = $2.last;
|
||
}
|
||
| direct_declarator array_indicator
|
||
{ $$.comp = $1.comp;
|
||
*$1.last = $2;
|
||
$$.last = &d_right ($2);
|
||
}
|
||
| colon_ext_name
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_TYPED_NAME);
|
||
d_left ($$.comp) = $1;
|
||
$$.last = &d_right ($$.comp);
|
||
}
|
||
;
|
||
|
||
/* These are similar to declarator and direct_declarator except that they
|
||
do not permit ( colon_ext_name ), which is ambiguous with a function
|
||
argument list. They also don't permit a few other forms with redundant
|
||
parentheses around the colon_ext_name; any colon_ext_name in parentheses
|
||
must be followed by an argument list or an array indicator, or preceded
|
||
by a pointer. */
|
||
declarator_1 : ptr_operator declarator_1
|
||
{ $$.comp = $2.comp;
|
||
$$.last = $1.last;
|
||
*$2.last = $1.comp; }
|
||
| colon_ext_name
|
||
{ $$.comp = make_empty (DEMANGLE_COMPONENT_TYPED_NAME);
|
||
d_left ($$.comp) = $1;
|
||
$$.last = &d_right ($$.comp);
|
||
}
|
||
| direct_declarator_1
|
||
|
||
/* Function local variable or type. The typespec to
|
||
our left is the type of the containing function.
|
||
This should be OK, because function local types
|
||
can not be templates, so the return types of their
|
||
members will not be mangled. If they are hopefully
|
||
they'll end up to the right of the ::. */
|
||
| colon_ext_name function_arglist COLONCOLON start
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_TYPED_NAME, $1, $2.comp);
|
||
$$.last = $2.last;
|
||
$$.comp = fill_comp (DEMANGLE_COMPONENT_LOCAL_NAME, $$.comp, $4);
|
||
}
|
||
| direct_declarator_1 function_arglist COLONCOLON start
|
||
{ $$.comp = $1.comp;
|
||
*$1.last = $2.comp;
|
||
$$.last = $2.last;
|
||
$$.comp = fill_comp (DEMANGLE_COMPONENT_LOCAL_NAME, $$.comp, $4);
|
||
}
|
||
;
|
||
|
||
direct_declarator_1
|
||
: '(' ptr_operator declarator ')'
|
||
{ $$.comp = $3.comp;
|
||
$$.last = $2.last;
|
||
*$3.last = $2.comp; }
|
||
| direct_declarator_1 function_arglist
|
||
{ $$.comp = $1.comp;
|
||
*$1.last = $2.comp;
|
||
$$.last = $2.last;
|
||
}
|
||
| direct_declarator_1 array_indicator
|
||
{ $$.comp = $1.comp;
|
||
*$1.last = $2;
|
||
$$.last = &d_right ($2);
|
||
}
|
||
| colon_ext_name function_arglist
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_TYPED_NAME, $1, $2.comp);
|
||
$$.last = $2.last;
|
||
}
|
||
| colon_ext_name array_indicator
|
||
{ $$.comp = fill_comp (DEMANGLE_COMPONENT_TYPED_NAME, $1, $2);
|
||
$$.last = &d_right ($2);
|
||
}
|
||
;
|
||
|
||
exp : '(' exp1 ')'
|
||
{ $$ = $2; }
|
||
;
|
||
|
||
/* Silly trick. Only allow '>' when parenthesized, in order to
|
||
handle conflict with templates. */
|
||
exp1 : exp
|
||
;
|
||
|
||
exp1 : exp '>' exp
|
||
{ $$ = d_binary (">", $1, $3); }
|
||
;
|
||
|
||
/* References. Not allowed everywhere in template parameters, only
|
||
at the top level, but treat them as expressions in case they are wrapped
|
||
in parentheses. */
|
||
exp1 : '&' start
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY, make_operator ("&", 1), $2); }
|
||
| '&' '(' start ')'
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY, make_operator ("&", 1), $3); }
|
||
;
|
||
|
||
/* Expressions, not including the comma operator. */
|
||
exp : '-' exp %prec UNARY
|
||
{ $$ = d_unary ("-", $2); }
|
||
;
|
||
|
||
exp : '!' exp %prec UNARY
|
||
{ $$ = d_unary ("!", $2); }
|
||
;
|
||
|
||
exp : '~' exp %prec UNARY
|
||
{ $$ = d_unary ("~", $2); }
|
||
;
|
||
|
||
/* Casts. First your normal C-style cast. If exp is a LITERAL, just change
|
||
its type. */
|
||
|
||
exp : '(' type ')' exp %prec UNARY
|
||
{ if ($4->type == DEMANGLE_COMPONENT_LITERAL
|
||
|| $4->type == DEMANGLE_COMPONENT_LITERAL_NEG)
|
||
{
|
||
$$ = $4;
|
||
d_left ($4) = $2;
|
||
}
|
||
else
|
||
$$ = fill_comp (DEMANGLE_COMPONENT_UNARY,
|
||
fill_comp (DEMANGLE_COMPONENT_CAST, $2, NULL),
|
||
$4);
|
||
}
|
||
;
|
||
|
||
/* Mangling does not differentiate between these, so we don't need to
|
||
either. */
|
||
exp : STATIC_CAST '<' type '>' '(' exp1 ')' %prec UNARY
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY,
|
||
fill_comp (DEMANGLE_COMPONENT_CAST, $3, NULL),
|
||
$6);
|
||
}
|
||
;
|
||
|
||
exp : DYNAMIC_CAST '<' type '>' '(' exp1 ')' %prec UNARY
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY,
|
||
fill_comp (DEMANGLE_COMPONENT_CAST, $3, NULL),
|
||
$6);
|
||
}
|
||
;
|
||
|
||
exp : REINTERPRET_CAST '<' type '>' '(' exp1 ')' %prec UNARY
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_UNARY,
|
||
fill_comp (DEMANGLE_COMPONENT_CAST, $3, NULL),
|
||
$6);
|
||
}
|
||
;
|
||
|
||
/* Another form of C++-style cast is "type ( exp1 )". This creates too many
|
||
conflicts to support. For a while we supported the simpler
|
||
"typespec_2 ( exp1 )", but that conflicts with "& ( start )" as a
|
||
reference, deep within the wilderness of abstract declarators:
|
||
Qux<int(&(*))> vs Qux<int(&(var))>, a shift-reduce conflict at the
|
||
innermost left parenthesis. So we do not support function-like casts.
|
||
Fortunately they never appear in demangler output. */
|
||
|
||
/* TO INVESTIGATE: ._0 style anonymous names; anonymous namespaces */
|
||
|
||
/* Binary operators in order of decreasing precedence. */
|
||
|
||
exp : exp '*' exp
|
||
{ $$ = d_binary ("*", $1, $3); }
|
||
;
|
||
|
||
exp : exp '/' exp
|
||
{ $$ = d_binary ("/", $1, $3); }
|
||
;
|
||
|
||
exp : exp '%' exp
|
||
{ $$ = d_binary ("%", $1, $3); }
|
||
;
|
||
|
||
exp : exp '+' exp
|
||
{ $$ = d_binary ("+", $1, $3); }
|
||
;
|
||
|
||
exp : exp '-' exp
|
||
{ $$ = d_binary ("-", $1, $3); }
|
||
;
|
||
|
||
exp : exp LSH exp
|
||
{ $$ = d_binary ("<<", $1, $3); }
|
||
;
|
||
|
||
exp : exp RSH exp
|
||
{ $$ = d_binary (">>", $1, $3); }
|
||
;
|
||
|
||
exp : exp EQUAL exp
|
||
{ $$ = d_binary ("==", $1, $3); }
|
||
;
|
||
|
||
exp : exp NOTEQUAL exp
|
||
{ $$ = d_binary ("!=", $1, $3); }
|
||
;
|
||
|
||
exp : exp LEQ exp
|
||
{ $$ = d_binary ("<=", $1, $3); }
|
||
;
|
||
|
||
exp : exp GEQ exp
|
||
{ $$ = d_binary (">=", $1, $3); }
|
||
;
|
||
|
||
exp : exp '<' exp
|
||
{ $$ = d_binary ("<", $1, $3); }
|
||
;
|
||
|
||
exp : exp '&' exp
|
||
{ $$ = d_binary ("&", $1, $3); }
|
||
;
|
||
|
||
exp : exp '^' exp
|
||
{ $$ = d_binary ("^", $1, $3); }
|
||
;
|
||
|
||
exp : exp '|' exp
|
||
{ $$ = d_binary ("|", $1, $3); }
|
||
;
|
||
|
||
exp : exp ANDAND exp
|
||
{ $$ = d_binary ("&&", $1, $3); }
|
||
;
|
||
|
||
exp : exp OROR exp
|
||
{ $$ = d_binary ("||", $1, $3); }
|
||
;
|
||
|
||
/* Not 100% sure these are necessary, but they're harmless. */
|
||
exp : exp ARROW NAME
|
||
{ $$ = d_binary ("->", $1, $3); }
|
||
;
|
||
|
||
exp : exp '.' NAME
|
||
{ $$ = d_binary (".", $1, $3); }
|
||
;
|
||
|
||
exp : exp '?' exp ':' exp %prec '?'
|
||
{ $$ = fill_comp (DEMANGLE_COMPONENT_TRINARY, make_operator ("?", 3),
|
||
fill_comp (DEMANGLE_COMPONENT_TRINARY_ARG1, $1,
|
||
fill_comp (DEMANGLE_COMPONENT_TRINARY_ARG2, $3, $5)));
|
||
}
|
||
;
|
||
|
||
exp : INT
|
||
;
|
||
|
||
/* Not generally allowed. */
|
||
exp : FLOAT
|
||
;
|
||
|
||
exp : SIZEOF '(' type ')' %prec UNARY
|
||
{
|
||
/* Match the whitespacing of cplus_demangle_operators.
|
||
It would abort on unrecognized string otherwise. */
|
||
$$ = d_unary ("sizeof ", $3);
|
||
}
|
||
;
|
||
|
||
/* C++. */
|
||
exp : TRUEKEYWORD
|
||
{ struct demangle_component *i;
|
||
i = make_name ("1", 1);
|
||
$$ = fill_comp (DEMANGLE_COMPONENT_LITERAL,
|
||
make_builtin_type ("bool"),
|
||
i);
|
||
}
|
||
;
|
||
|
||
exp : FALSEKEYWORD
|
||
{ struct demangle_component *i;
|
||
i = make_name ("0", 1);
|
||
$$ = fill_comp (DEMANGLE_COMPONENT_LITERAL,
|
||
make_builtin_type ("bool"),
|
||
i);
|
||
}
|
||
;
|
||
|
||
/* end of C++. */
|
||
|
||
%%
|
||
|
||
/* Apply QUALIFIERS to LHS and return a qualified component. IS_METHOD
|
||
is set if LHS is a method, in which case the qualifiers are logically
|
||
applied to "this". We apply qualifiers in a consistent order; LHS
|
||
may already be qualified; duplicate qualifiers are not created. */
|
||
|
||
struct demangle_component *
|
||
d_qualify (struct demangle_component *lhs, int qualifiers, int is_method)
|
||
{
|
||
struct demangle_component **inner_p;
|
||
enum demangle_component_type type;
|
||
|
||
/* For now the order is CONST (innermost), VOLATILE, RESTRICT. */
|
||
|
||
#define HANDLE_QUAL(TYPE, MTYPE, QUAL) \
|
||
if ((qualifiers & QUAL) && (type != TYPE) && (type != MTYPE)) \
|
||
{ \
|
||
*inner_p = fill_comp (is_method ? MTYPE : TYPE, \
|
||
*inner_p, NULL); \
|
||
inner_p = &d_left (*inner_p); \
|
||
type = (*inner_p)->type; \
|
||
} \
|
||
else if (type == TYPE || type == MTYPE) \
|
||
{ \
|
||
inner_p = &d_left (*inner_p); \
|
||
type = (*inner_p)->type; \
|
||
}
|
||
|
||
inner_p = &lhs;
|
||
|
||
type = (*inner_p)->type;
|
||
|
||
HANDLE_QUAL (DEMANGLE_COMPONENT_RESTRICT, DEMANGLE_COMPONENT_RESTRICT_THIS, QUAL_RESTRICT);
|
||
HANDLE_QUAL (DEMANGLE_COMPONENT_VOLATILE, DEMANGLE_COMPONENT_VOLATILE_THIS, QUAL_VOLATILE);
|
||
HANDLE_QUAL (DEMANGLE_COMPONENT_CONST, DEMANGLE_COMPONENT_CONST_THIS, QUAL_CONST);
|
||
|
||
return lhs;
|
||
}
|
||
|
||
/* Return a builtin type corresponding to FLAGS. */
|
||
|
||
static struct demangle_component *
|
||
d_int_type (int flags)
|
||
{
|
||
const char *name;
|
||
|
||
switch (flags)
|
||
{
|
||
case INT_SIGNED | INT_CHAR:
|
||
name = "signed char";
|
||
break;
|
||
case INT_CHAR:
|
||
name = "char";
|
||
break;
|
||
case INT_UNSIGNED | INT_CHAR:
|
||
name = "unsigned char";
|
||
break;
|
||
case 0:
|
||
case INT_SIGNED:
|
||
name = "int";
|
||
break;
|
||
case INT_UNSIGNED:
|
||
name = "unsigned int";
|
||
break;
|
||
case INT_LONG:
|
||
case INT_SIGNED | INT_LONG:
|
||
name = "long";
|
||
break;
|
||
case INT_UNSIGNED | INT_LONG:
|
||
name = "unsigned long";
|
||
break;
|
||
case INT_SHORT:
|
||
case INT_SIGNED | INT_SHORT:
|
||
name = "short";
|
||
break;
|
||
case INT_UNSIGNED | INT_SHORT:
|
||
name = "unsigned short";
|
||
break;
|
||
case INT_LLONG | INT_LONG:
|
||
case INT_SIGNED | INT_LLONG | INT_LONG:
|
||
name = "long long";
|
||
break;
|
||
case INT_UNSIGNED | INT_LLONG | INT_LONG:
|
||
name = "unsigned long long";
|
||
break;
|
||
default:
|
||
return NULL;
|
||
}
|
||
|
||
return make_builtin_type (name);
|
||
}
|
||
|
||
/* Wrapper to create a unary operation. */
|
||
|
||
static struct demangle_component *
|
||
d_unary (const char *name, struct demangle_component *lhs)
|
||
{
|
||
return fill_comp (DEMANGLE_COMPONENT_UNARY, make_operator (name, 1), lhs);
|
||
}
|
||
|
||
/* Wrapper to create a binary operation. */
|
||
|
||
static struct demangle_component *
|
||
d_binary (const char *name, struct demangle_component *lhs, struct demangle_component *rhs)
|
||
{
|
||
return fill_comp (DEMANGLE_COMPONENT_BINARY, make_operator (name, 2),
|
||
fill_comp (DEMANGLE_COMPONENT_BINARY_ARGS, lhs, rhs));
|
||
}
|
||
|
||
/* Find the end of a symbol name starting at LEXPTR. */
|
||
|
||
static const char *
|
||
symbol_end (const char *lexptr)
|
||
{
|
||
const char *p = lexptr;
|
||
|
||
while (*p && (ISALNUM (*p) || *p == '_' || *p == '$' || *p == '.'))
|
||
p++;
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Take care of parsing a number (anything that starts with a digit).
|
||
The number starts at P and contains LEN characters. Store the result in
|
||
YYLVAL. */
|
||
|
||
static int
|
||
parse_number (const char *p, int len, int parsed_float)
|
||
{
|
||
int unsigned_p = 0;
|
||
|
||
/* Number of "L" suffixes encountered. */
|
||
int long_p = 0;
|
||
|
||
struct demangle_component *signed_type;
|
||
struct demangle_component *unsigned_type;
|
||
struct demangle_component *type, *name;
|
||
enum demangle_component_type literal_type;
|
||
|
||
if (p[0] == '-')
|
||
{
|
||
literal_type = DEMANGLE_COMPONENT_LITERAL_NEG;
|
||
p++;
|
||
len--;
|
||
}
|
||
else
|
||
literal_type = DEMANGLE_COMPONENT_LITERAL;
|
||
|
||
if (parsed_float)
|
||
{
|
||
/* It's a float since it contains a point or an exponent. */
|
||
char c;
|
||
|
||
/* The GDB lexer checks the result of scanf at this point. Not doing
|
||
this leaves our error checking slightly weaker but only for invalid
|
||
data. */
|
||
|
||
/* See if it has `f' or `l' suffix (float or long double). */
|
||
|
||
c = TOLOWER (p[len - 1]);
|
||
|
||
if (c == 'f')
|
||
{
|
||
len--;
|
||
type = make_builtin_type ("float");
|
||
}
|
||
else if (c == 'l')
|
||
{
|
||
len--;
|
||
type = make_builtin_type ("long double");
|
||
}
|
||
else if (ISDIGIT (c) || c == '.')
|
||
type = make_builtin_type ("double");
|
||
else
|
||
return ERROR;
|
||
|
||
name = make_name (p, len);
|
||
yylval.comp = fill_comp (literal_type, type, name);
|
||
|
||
return FLOAT;
|
||
}
|
||
|
||
/* This treats 0x1 and 1 as different literals. We also do not
|
||
automatically generate unsigned types. */
|
||
|
||
long_p = 0;
|
||
unsigned_p = 0;
|
||
while (len > 0)
|
||
{
|
||
if (p[len - 1] == 'l' || p[len - 1] == 'L')
|
||
{
|
||
len--;
|
||
long_p++;
|
||
continue;
|
||
}
|
||
if (p[len - 1] == 'u' || p[len - 1] == 'U')
|
||
{
|
||
len--;
|
||
unsigned_p++;
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (long_p == 0)
|
||
{
|
||
unsigned_type = make_builtin_type ("unsigned int");
|
||
signed_type = make_builtin_type ("int");
|
||
}
|
||
else if (long_p == 1)
|
||
{
|
||
unsigned_type = make_builtin_type ("unsigned long");
|
||
signed_type = make_builtin_type ("long");
|
||
}
|
||
else
|
||
{
|
||
unsigned_type = make_builtin_type ("unsigned long long");
|
||
signed_type = make_builtin_type ("long long");
|
||
}
|
||
|
||
if (unsigned_p)
|
||
type = unsigned_type;
|
||
else
|
||
type = signed_type;
|
||
|
||
name = make_name (p, len);
|
||
yylval.comp = fill_comp (literal_type, type, name);
|
||
|
||
return INT;
|
||
}
|
||
|
||
static char backslashable[] = "abefnrtv";
|
||
static char represented[] = "\a\b\e\f\n\r\t\v";
|
||
|
||
/* Translate the backslash the way we would in the host character set. */
|
||
static int
|
||
c_parse_backslash (int host_char, int *target_char)
|
||
{
|
||
const char *ix;
|
||
ix = strchr (backslashable, host_char);
|
||
if (! ix)
|
||
return 0;
|
||
else
|
||
*target_char = represented[ix - backslashable];
|
||
return 1;
|
||
}
|
||
|
||
/* Parse a C escape sequence. STRING_PTR points to a variable
|
||
containing a pointer to the string to parse. That pointer
|
||
should point to the character after the \. That pointer
|
||
is updated past the characters we use. The value of the
|
||
escape sequence is returned.
|
||
|
||
A negative value means the sequence \ newline was seen,
|
||
which is supposed to be equivalent to nothing at all.
|
||
|
||
If \ is followed by a null character, we return a negative
|
||
value and leave the string pointer pointing at the null character.
|
||
|
||
If \ is followed by 000, we return 0 and leave the string pointer
|
||
after the zeros. A value of 0 does not mean end of string. */
|
||
|
||
static int
|
||
cp_parse_escape (const char **string_ptr)
|
||
{
|
||
int target_char;
|
||
int c = *(*string_ptr)++;
|
||
if (c_parse_backslash (c, &target_char))
|
||
return target_char;
|
||
else
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
return -2;
|
||
case 0:
|
||
(*string_ptr)--;
|
||
return 0;
|
||
case '^':
|
||
{
|
||
c = *(*string_ptr)++;
|
||
|
||
if (c == '?')
|
||
return 0177;
|
||
else if (c == '\\')
|
||
target_char = cp_parse_escape (string_ptr);
|
||
else
|
||
target_char = c;
|
||
|
||
/* Now target_char is something like `c', and we want to find
|
||
its control-character equivalent. */
|
||
target_char = target_char & 037;
|
||
|
||
return target_char;
|
||
}
|
||
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
{
|
||
int i = c - '0';
|
||
int count = 0;
|
||
while (++count < 3)
|
||
{
|
||
c = (**string_ptr);
|
||
if (c >= '0' && c <= '7')
|
||
{
|
||
(*string_ptr)++;
|
||
i *= 8;
|
||
i += c - '0';
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
return i;
|
||
}
|
||
default:
|
||
return c;
|
||
}
|
||
}
|
||
|
||
#define HANDLE_SPECIAL(string, comp) \
|
||
if (strncmp (tokstart, string, sizeof (string) - 1) == 0) \
|
||
{ \
|
||
lexptr = tokstart + sizeof (string) - 1; \
|
||
yylval.lval = comp; \
|
||
return DEMANGLER_SPECIAL; \
|
||
}
|
||
|
||
#define HANDLE_TOKEN2(string, token) \
|
||
if (lexptr[1] == string[1]) \
|
||
{ \
|
||
lexptr += 2; \
|
||
yylval.opname = string; \
|
||
return token; \
|
||
}
|
||
|
||
#define HANDLE_TOKEN3(string, token) \
|
||
if (lexptr[1] == string[1] && lexptr[2] == string[2]) \
|
||
{ \
|
||
lexptr += 3; \
|
||
yylval.opname = string; \
|
||
return token; \
|
||
}
|
||
|
||
/* Read one token, getting characters through LEXPTR. */
|
||
|
||
static int
|
||
yylex (void)
|
||
{
|
||
int c;
|
||
int namelen;
|
||
const char *tokstart;
|
||
|
||
retry:
|
||
prev_lexptr = lexptr;
|
||
tokstart = lexptr;
|
||
|
||
switch (c = *tokstart)
|
||
{
|
||
case 0:
|
||
return 0;
|
||
|
||
case ' ':
|
||
case '\t':
|
||
case '\n':
|
||
lexptr++;
|
||
goto retry;
|
||
|
||
case '\'':
|
||
/* We either have a character constant ('0' or '\177' for example)
|
||
or we have a quoted symbol reference ('foo(int,int)' in C++
|
||
for example). */
|
||
lexptr++;
|
||
c = *lexptr++;
|
||
if (c == '\\')
|
||
c = cp_parse_escape (&lexptr);
|
||
else if (c == '\'')
|
||
{
|
||
yyerror (_("empty character constant"));
|
||
return ERROR;
|
||
}
|
||
|
||
c = *lexptr++;
|
||
if (c != '\'')
|
||
{
|
||
yyerror (_("invalid character constant"));
|
||
return ERROR;
|
||
}
|
||
|
||
/* FIXME: We should refer to a canonical form of the character,
|
||
presumably the same one that appears in manglings - the decimal
|
||
representation. But if that isn't in our input then we have to
|
||
allocate memory for it somewhere. */
|
||
yylval.comp = fill_comp (DEMANGLE_COMPONENT_LITERAL,
|
||
make_builtin_type ("char"),
|
||
make_name (tokstart, lexptr - tokstart));
|
||
|
||
return INT;
|
||
|
||
case '(':
|
||
if (strncmp (tokstart, "(anonymous namespace)", 21) == 0)
|
||
{
|
||
lexptr += 21;
|
||
yylval.comp = make_name ("(anonymous namespace)",
|
||
sizeof "(anonymous namespace)" - 1);
|
||
return NAME;
|
||
}
|
||
/* FALL THROUGH */
|
||
|
||
case ')':
|
||
case ',':
|
||
lexptr++;
|
||
return c;
|
||
|
||
case '.':
|
||
if (lexptr[1] == '.' && lexptr[2] == '.')
|
||
{
|
||
lexptr += 3;
|
||
return ELLIPSIS;
|
||
}
|
||
|
||
/* Might be a floating point number. */
|
||
if (lexptr[1] < '0' || lexptr[1] > '9')
|
||
goto symbol; /* Nope, must be a symbol. */
|
||
|
||
goto try_number;
|
||
|
||
case '-':
|
||
HANDLE_TOKEN2 ("-=", ASSIGN_MODIFY);
|
||
HANDLE_TOKEN2 ("--", DECREMENT);
|
||
HANDLE_TOKEN2 ("->", ARROW);
|
||
|
||
/* For construction vtables. This is kind of hokey. */
|
||
if (strncmp (tokstart, "-in-", 4) == 0)
|
||
{
|
||
lexptr += 4;
|
||
return CONSTRUCTION_IN;
|
||
}
|
||
|
||
if (lexptr[1] < '0' || lexptr[1] > '9')
|
||
{
|
||
lexptr++;
|
||
return '-';
|
||
}
|
||
/* FALL THRU into number case. */
|
||
|
||
try_number:
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
case '8':
|
||
case '9':
|
||
{
|
||
/* It's a number. */
|
||
int got_dot = 0, got_e = 0, toktype;
|
||
const char *p = tokstart;
|
||
int hex = 0;
|
||
|
||
if (c == '-')
|
||
p++;
|
||
|
||
if (c == '0' && (p[1] == 'x' || p[1] == 'X'))
|
||
{
|
||
p += 2;
|
||
hex = 1;
|
||
}
|
||
else if (c == '0' && (p[1]=='t' || p[1]=='T' || p[1]=='d' || p[1]=='D'))
|
||
{
|
||
p += 2;
|
||
hex = 0;
|
||
}
|
||
|
||
for (;; ++p)
|
||
{
|
||
/* This test includes !hex because 'e' is a valid hex digit
|
||
and thus does not indicate a floating point number when
|
||
the radix is hex. */
|
||
if (!hex && !got_e && (*p == 'e' || *p == 'E'))
|
||
got_dot = got_e = 1;
|
||
/* This test does not include !hex, because a '.' always indicates
|
||
a decimal floating point number regardless of the radix.
|
||
|
||
NOTE drow/2005-03-09: This comment is not accurate in C99;
|
||
however, it's not clear that all the floating point support
|
||
in this file is doing any good here. */
|
||
else if (!got_dot && *p == '.')
|
||
got_dot = 1;
|
||
else if (got_e && (p[-1] == 'e' || p[-1] == 'E')
|
||
&& (*p == '-' || *p == '+'))
|
||
/* This is the sign of the exponent, not the end of the
|
||
number. */
|
||
continue;
|
||
/* We will take any letters or digits. parse_number will
|
||
complain if past the radix, or if L or U are not final. */
|
||
else if (! ISALNUM (*p))
|
||
break;
|
||
}
|
||
toktype = parse_number (tokstart, p - tokstart, got_dot|got_e);
|
||
if (toktype == ERROR)
|
||
{
|
||
char *err_copy = (char *) alloca (p - tokstart + 1);
|
||
|
||
memcpy (err_copy, tokstart, p - tokstart);
|
||
err_copy[p - tokstart] = 0;
|
||
yyerror (_("invalid number"));
|
||
return ERROR;
|
||
}
|
||
lexptr = p;
|
||
return toktype;
|
||
}
|
||
|
||
case '+':
|
||
HANDLE_TOKEN2 ("+=", ASSIGN_MODIFY);
|
||
HANDLE_TOKEN2 ("++", INCREMENT);
|
||
lexptr++;
|
||
return c;
|
||
case '*':
|
||
HANDLE_TOKEN2 ("*=", ASSIGN_MODIFY);
|
||
lexptr++;
|
||
return c;
|
||
case '/':
|
||
HANDLE_TOKEN2 ("/=", ASSIGN_MODIFY);
|
||
lexptr++;
|
||
return c;
|
||
case '%':
|
||
HANDLE_TOKEN2 ("%=", ASSIGN_MODIFY);
|
||
lexptr++;
|
||
return c;
|
||
case '|':
|
||
HANDLE_TOKEN2 ("|=", ASSIGN_MODIFY);
|
||
HANDLE_TOKEN2 ("||", OROR);
|
||
lexptr++;
|
||
return c;
|
||
case '&':
|
||
HANDLE_TOKEN2 ("&=", ASSIGN_MODIFY);
|
||
HANDLE_TOKEN2 ("&&", ANDAND);
|
||
lexptr++;
|
||
return c;
|
||
case '^':
|
||
HANDLE_TOKEN2 ("^=", ASSIGN_MODIFY);
|
||
lexptr++;
|
||
return c;
|
||
case '!':
|
||
HANDLE_TOKEN2 ("!=", NOTEQUAL);
|
||
lexptr++;
|
||
return c;
|
||
case '<':
|
||
HANDLE_TOKEN3 ("<<=", ASSIGN_MODIFY);
|
||
HANDLE_TOKEN2 ("<=", LEQ);
|
||
HANDLE_TOKEN2 ("<<", LSH);
|
||
lexptr++;
|
||
return c;
|
||
case '>':
|
||
HANDLE_TOKEN3 (">>=", ASSIGN_MODIFY);
|
||
HANDLE_TOKEN2 (">=", GEQ);
|
||
HANDLE_TOKEN2 (">>", RSH);
|
||
lexptr++;
|
||
return c;
|
||
case '=':
|
||
HANDLE_TOKEN2 ("==", EQUAL);
|
||
lexptr++;
|
||
return c;
|
||
case ':':
|
||
HANDLE_TOKEN2 ("::", COLONCOLON);
|
||
lexptr++;
|
||
return c;
|
||
|
||
case '[':
|
||
case ']':
|
||
case '?':
|
||
case '@':
|
||
case '~':
|
||
case '{':
|
||
case '}':
|
||
symbol:
|
||
lexptr++;
|
||
return c;
|
||
|
||
case '"':
|
||
/* These can't occur in C++ names. */
|
||
yyerror (_("unexpected string literal"));
|
||
return ERROR;
|
||
}
|
||
|
||
if (!(c == '_' || c == '$' || ISALPHA (c)))
|
||
{
|
||
/* We must have come across a bad character (e.g. ';'). */
|
||
yyerror (_("invalid character"));
|
||
return ERROR;
|
||
}
|
||
|
||
/* It's a name. See how long it is. */
|
||
namelen = 0;
|
||
do
|
||
c = tokstart[++namelen];
|
||
while (ISALNUM (c) || c == '_' || c == '$');
|
||
|
||
lexptr += namelen;
|
||
|
||
/* Catch specific keywords. Notice that some of the keywords contain
|
||
spaces, and are sorted by the length of the first word. They must
|
||
all include a trailing space in the string comparison. */
|
||
switch (namelen)
|
||
{
|
||
case 16:
|
||
if (strncmp (tokstart, "reinterpret_cast", 16) == 0)
|
||
return REINTERPRET_CAST;
|
||
break;
|
||
case 12:
|
||
if (strncmp (tokstart, "construction vtable for ", 24) == 0)
|
||
{
|
||
lexptr = tokstart + 24;
|
||
return CONSTRUCTION_VTABLE;
|
||
}
|
||
if (strncmp (tokstart, "dynamic_cast", 12) == 0)
|
||
return DYNAMIC_CAST;
|
||
break;
|
||
case 11:
|
||
if (strncmp (tokstart, "static_cast", 11) == 0)
|
||
return STATIC_CAST;
|
||
break;
|
||
case 9:
|
||
HANDLE_SPECIAL ("covariant return thunk to ", DEMANGLE_COMPONENT_COVARIANT_THUNK);
|
||
HANDLE_SPECIAL ("reference temporary for ", DEMANGLE_COMPONENT_REFTEMP);
|
||
break;
|
||
case 8:
|
||
HANDLE_SPECIAL ("typeinfo for ", DEMANGLE_COMPONENT_TYPEINFO);
|
||
HANDLE_SPECIAL ("typeinfo fn for ", DEMANGLE_COMPONENT_TYPEINFO_FN);
|
||
HANDLE_SPECIAL ("typeinfo name for ", DEMANGLE_COMPONENT_TYPEINFO_NAME);
|
||
if (strncmp (tokstart, "operator", 8) == 0)
|
||
return OPERATOR;
|
||
if (strncmp (tokstart, "restrict", 8) == 0)
|
||
return RESTRICT;
|
||
if (strncmp (tokstart, "unsigned", 8) == 0)
|
||
return UNSIGNED;
|
||
if (strncmp (tokstart, "template", 8) == 0)
|
||
return TEMPLATE;
|
||
if (strncmp (tokstart, "volatile", 8) == 0)
|
||
return VOLATILE_KEYWORD;
|
||
break;
|
||
case 7:
|
||
HANDLE_SPECIAL ("virtual thunk to ", DEMANGLE_COMPONENT_VIRTUAL_THUNK);
|
||
if (strncmp (tokstart, "wchar_t", 7) == 0)
|
||
return WCHAR_T;
|
||
break;
|
||
case 6:
|
||
if (strncmp (tokstart, "global constructors keyed to ", 29) == 0)
|
||
{
|
||
const char *p;
|
||
lexptr = tokstart + 29;
|
||
yylval.lval = DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS;
|
||
/* Find the end of the symbol. */
|
||
p = symbol_end (lexptr);
|
||
yylval.comp = make_name (lexptr, p - lexptr);
|
||
lexptr = p;
|
||
return DEMANGLER_SPECIAL;
|
||
}
|
||
if (strncmp (tokstart, "global destructors keyed to ", 28) == 0)
|
||
{
|
||
const char *p;
|
||
lexptr = tokstart + 28;
|
||
yylval.lval = DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS;
|
||
/* Find the end of the symbol. */
|
||
p = symbol_end (lexptr);
|
||
yylval.comp = make_name (lexptr, p - lexptr);
|
||
lexptr = p;
|
||
return DEMANGLER_SPECIAL;
|
||
}
|
||
|
||
HANDLE_SPECIAL ("vtable for ", DEMANGLE_COMPONENT_VTABLE);
|
||
if (strncmp (tokstart, "delete", 6) == 0)
|
||
return DELETE;
|
||
if (strncmp (tokstart, "struct", 6) == 0)
|
||
return STRUCT;
|
||
if (strncmp (tokstart, "signed", 6) == 0)
|
||
return SIGNED_KEYWORD;
|
||
if (strncmp (tokstart, "sizeof", 6) == 0)
|
||
return SIZEOF;
|
||
if (strncmp (tokstart, "double", 6) == 0)
|
||
return DOUBLE_KEYWORD;
|
||
break;
|
||
case 5:
|
||
HANDLE_SPECIAL ("guard variable for ", DEMANGLE_COMPONENT_GUARD);
|
||
if (strncmp (tokstart, "false", 5) == 0)
|
||
return FALSEKEYWORD;
|
||
if (strncmp (tokstart, "class", 5) == 0)
|
||
return CLASS;
|
||
if (strncmp (tokstart, "union", 5) == 0)
|
||
return UNION;
|
||
if (strncmp (tokstart, "float", 5) == 0)
|
||
return FLOAT_KEYWORD;
|
||
if (strncmp (tokstart, "short", 5) == 0)
|
||
return SHORT;
|
||
if (strncmp (tokstart, "const", 5) == 0)
|
||
return CONST_KEYWORD;
|
||
break;
|
||
case 4:
|
||
if (strncmp (tokstart, "void", 4) == 0)
|
||
return VOID;
|
||
if (strncmp (tokstart, "bool", 4) == 0)
|
||
return BOOL;
|
||
if (strncmp (tokstart, "char", 4) == 0)
|
||
return CHAR;
|
||
if (strncmp (tokstart, "enum", 4) == 0)
|
||
return ENUM;
|
||
if (strncmp (tokstart, "long", 4) == 0)
|
||
return LONG;
|
||
if (strncmp (tokstart, "true", 4) == 0)
|
||
return TRUEKEYWORD;
|
||
break;
|
||
case 3:
|
||
HANDLE_SPECIAL ("VTT for ", DEMANGLE_COMPONENT_VTT);
|
||
HANDLE_SPECIAL ("non-virtual thunk to ", DEMANGLE_COMPONENT_THUNK);
|
||
if (strncmp (tokstart, "new", 3) == 0)
|
||
return NEW;
|
||
if (strncmp (tokstart, "int", 3) == 0)
|
||
return INT_KEYWORD;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
yylval.comp = make_name (tokstart, namelen);
|
||
return NAME;
|
||
}
|
||
|
||
static void
|
||
yyerror (char *msg)
|
||
{
|
||
if (global_errmsg)
|
||
return;
|
||
|
||
error_lexptr = prev_lexptr;
|
||
global_errmsg = msg ? msg : "parse error";
|
||
}
|
||
|
||
/* Allocate a chunk of the components we'll need to build a tree. We
|
||
generally allocate too many components, but the extra memory usage
|
||
doesn't hurt because the trees are temporary and the storage is
|
||
reused. More may be allocated later, by d_grab. */
|
||
static struct demangle_info *
|
||
allocate_info (void)
|
||
{
|
||
struct demangle_info *info = XNEW (struct demangle_info);
|
||
|
||
info->next = NULL;
|
||
info->used = 0;
|
||
return info;
|
||
}
|
||
|
||
/* Convert RESULT to a string. The return value is allocated
|
||
using xmalloc. ESTIMATED_LEN is used only as a guide to the
|
||
length of the result. This functions handles a few cases that
|
||
cplus_demangle_print does not, specifically the global destructor
|
||
and constructor labels. */
|
||
|
||
char *
|
||
cp_comp_to_string (struct demangle_component *result, int estimated_len)
|
||
{
|
||
size_t err;
|
||
|
||
return cplus_demangle_print (DMGL_PARAMS | DMGL_ANSI, result, estimated_len,
|
||
&err);
|
||
}
|
||
|
||
/* A convenience function to allocate and initialize a new struct
|
||
demangled_parse_info. */
|
||
|
||
struct demangle_parse_info *
|
||
cp_new_demangle_parse_info (void)
|
||
{
|
||
struct demangle_parse_info *info;
|
||
|
||
info = XNEW (struct demangle_parse_info);
|
||
info->info = NULL;
|
||
info->tree = NULL;
|
||
obstack_init (&info->obstack);
|
||
|
||
return info;
|
||
}
|
||
|
||
/* Free any memory associated with the given PARSE_INFO. */
|
||
|
||
void
|
||
cp_demangled_name_parse_free (struct demangle_parse_info *parse_info)
|
||
{
|
||
struct demangle_info *info = parse_info->info;
|
||
|
||
/* Free any allocated chunks of memory for the parse. */
|
||
while (info != NULL)
|
||
{
|
||
struct demangle_info *next = info->next;
|
||
|
||
free (info);
|
||
info = next;
|
||
}
|
||
|
||
/* Free any memory allocated during typedef replacement. */
|
||
obstack_free (&parse_info->obstack, NULL);
|
||
|
||
/* Free the parser info. */
|
||
free (parse_info);
|
||
}
|
||
|
||
/* Merge the two parse trees given by DEST and SRC. The parse tree
|
||
in SRC is attached to DEST at the node represented by TARGET.
|
||
SRC is then freed.
|
||
|
||
NOTE 1: Since there is no API to merge obstacks, this function does
|
||
even attempt to try it. Fortunately, we do not (yet?) need this ability.
|
||
The code will assert if SRC->obstack is not empty.
|
||
|
||
NOTE 2: The string from which SRC was parsed must not be freed, since
|
||
this function will place pointers to that string into DEST. */
|
||
|
||
void
|
||
cp_merge_demangle_parse_infos (struct demangle_parse_info *dest,
|
||
struct demangle_component *target,
|
||
struct demangle_parse_info *src)
|
||
|
||
{
|
||
struct demangle_info *di;
|
||
|
||
/* Copy the SRC's parse data into DEST. */
|
||
*target = *src->tree;
|
||
di = dest->info;
|
||
while (di->next != NULL)
|
||
di = di->next;
|
||
di->next = src->info;
|
||
|
||
/* Clear the (pointer to) SRC's parse data so that it is not freed when
|
||
cp_demangled_parse_info_free is called. */
|
||
src->info = NULL;
|
||
|
||
/* Free SRC. */
|
||
cp_demangled_name_parse_free (src);
|
||
}
|
||
|
||
/* Convert a demangled name to a demangle_component tree. On success,
|
||
a structure containing the root of the new tree is returned; it must
|
||
be freed by calling cp_demangled_name_parse_free. On error, NULL is
|
||
returned, and an error message will be set in *ERRMSG (which does
|
||
not need to be freed). */
|
||
|
||
struct demangle_parse_info *
|
||
cp_demangled_name_to_comp (const char *demangled_name, const char **errmsg)
|
||
{
|
||
static char errbuf[60];
|
||
struct demangle_parse_info *result;
|
||
|
||
prev_lexptr = lexptr = demangled_name;
|
||
error_lexptr = NULL;
|
||
global_errmsg = NULL;
|
||
|
||
demangle_info = allocate_info ();
|
||
|
||
result = cp_new_demangle_parse_info ();
|
||
result->info = demangle_info;
|
||
|
||
if (yyparse ())
|
||
{
|
||
if (global_errmsg && errmsg)
|
||
{
|
||
snprintf (errbuf, sizeof (errbuf) - 2, "%s, near `%s",
|
||
global_errmsg, error_lexptr);
|
||
strcat (errbuf, "'");
|
||
*errmsg = errbuf;
|
||
}
|
||
cp_demangled_name_parse_free (result);
|
||
return NULL;
|
||
}
|
||
|
||
result->tree = global_result;
|
||
global_result = NULL;
|
||
|
||
return result;
|
||
}
|
||
|
||
#ifdef TEST_CPNAMES
|
||
|
||
static void
|
||
cp_print (struct demangle_component *result)
|
||
{
|
||
char *str;
|
||
size_t err = 0;
|
||
|
||
str = cplus_demangle_print (DMGL_PARAMS | DMGL_ANSI, result, 64, &err);
|
||
if (str == NULL)
|
||
return;
|
||
|
||
fputs (str, stdout);
|
||
|
||
free (str);
|
||
}
|
||
|
||
static char
|
||
trim_chars (char *lexptr, char **extra_chars)
|
||
{
|
||
char *p = (char *) symbol_end (lexptr);
|
||
char c = 0;
|
||
|
||
if (*p)
|
||
{
|
||
c = *p;
|
||
*p = 0;
|
||
*extra_chars = p + 1;
|
||
}
|
||
|
||
return c;
|
||
}
|
||
|
||
/* When this file is built as a standalone program, xmalloc comes from
|
||
libiberty --- in which case we have to provide xfree ourselves. */
|
||
|
||
void
|
||
xfree (void *ptr)
|
||
{
|
||
if (ptr != NULL)
|
||
{
|
||
/* Literal `free' would get translated back to xfree again. */
|
||
CONCAT2 (fr,ee) (ptr);
|
||
}
|
||
}
|
||
|
||
/* GDB normally defines internal_error itself, but when this file is built
|
||
as a standalone program, we must also provide an implementation. */
|
||
|
||
void
|
||
internal_error (const char *file, int line, const char *fmt, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, fmt);
|
||
fprintf (stderr, "%s:%d: internal error: ", file, line);
|
||
vfprintf (stderr, fmt, ap);
|
||
exit (1);
|
||
}
|
||
|
||
int
|
||
main (int argc, char **argv)
|
||
{
|
||
char *str2, *extra_chars = "", c;
|
||
char buf[65536];
|
||
int arg;
|
||
const char *errmsg;
|
||
struct demangle_parse_info *result;
|
||
|
||
arg = 1;
|
||
if (argv[arg] && strcmp (argv[arg], "--debug") == 0)
|
||
{
|
||
yydebug = 1;
|
||
arg++;
|
||
}
|
||
|
||
if (argv[arg] == NULL)
|
||
while (fgets (buf, 65536, stdin) != NULL)
|
||
{
|
||
int len;
|
||
buf[strlen (buf) - 1] = 0;
|
||
/* Use DMGL_VERBOSE to get expanded standard substitutions. */
|
||
c = trim_chars (buf, &extra_chars);
|
||
str2 = cplus_demangle (buf, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE);
|
||
if (str2 == NULL)
|
||
{
|
||
printf ("Demangling error\n");
|
||
if (c)
|
||
printf ("%s%c%s\n", buf, c, extra_chars);
|
||
else
|
||
printf ("%s\n", buf);
|
||
continue;
|
||
}
|
||
result = cp_demangled_name_to_comp (str2, &errmsg);
|
||
if (result == NULL)
|
||
{
|
||
fputs (errmsg, stderr);
|
||
fputc ('\n', stderr);
|
||
continue;
|
||
}
|
||
|
||
cp_print (result->tree);
|
||
cp_demangled_name_parse_free (result);
|
||
|
||
free (str2);
|
||
if (c)
|
||
{
|
||
putchar (c);
|
||
fputs (extra_chars, stdout);
|
||
}
|
||
putchar ('\n');
|
||
}
|
||
else
|
||
{
|
||
result = cp_demangled_name_to_comp (argv[arg], &errmsg);
|
||
if (result == NULL)
|
||
{
|
||
fputs (errmsg, stderr);
|
||
fputc ('\n', stderr);
|
||
return 0;
|
||
}
|
||
cp_print (result->tree);
|
||
cp_demangled_name_parse_free (result);
|
||
putchar ('\n');
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#endif
|