# Yacc compatible skeleton for Bison
-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+# Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation,
+# Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
[push], [m4_define([b4_pull_flag], [[0]])])
# Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
-# tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
-# behavior at all when push parsing is already requested.
+# tests function as written, do not let BISON_USE_PUSH_FOR_PULL modify the
+# behavior of Bison at all when push parsing is already requested.
b4_define_flag_if([use_push_for_pull])
b4_use_push_for_pull_if([
b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
[(yylsp@{($2) - ($1)@})])
-## ------------------ ##
-## Parser variables. ##
-## ------------------ ##
+## -------------- ##
+## Declarations. ##
+## -------------- ##
# b4_declare_scanner_communication_variables
# ------------------------------------------
`yyvs': related to semantic values.]b4_locations_if([[
`yyls': related to locations.]])[
- Refer to the stacks thru separate pointers, to allow yyoverflow
+ Refer to the stacks through separate pointers, to allow yyoverflow
to reallocate them elsewhere. */
/* The state stack. */
YYSIZE_T yyes_capacity;]])])
-## --------------------------------------------------------- ##
-## Defining symbol actions, e.g., printers and destructors. ##
-## --------------------------------------------------------- ##
+# b4_declare_yyparse_push_
+# ------------------------
+# Declaration of yyparse (and dependencies) when using the push parser
+# (including in pull mode).
+m4_define([b4_declare_yyparse_push_],
+[[typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
+enum { YYPUSH_MORE = 4 };
+]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
+])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
+ [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
+ [[[int yypushed_char]], [[yypushed_char]]],
+ [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
+ [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
+ b4_parse_param]))
+b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
+ [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
+ b4_parse_param]))])
+b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
+ [[[void]], []])
+b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
+ [[b4_prefix[pstate *yyps]], [[yyps]]])dnl
+])
+
+# b4_declare_yyparse_
+# -------------------
+# When not the push parser.
+m4_define([b4_declare_yyparse_],
+[[#ifdef YYPARSE_PARAM
+]b4_c_function_decl(b4_prefix[parse], [int],
+ [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
+#else /* ! YYPARSE_PARAM */
+]b4_c_function_decl(b4_prefix[parse], [int], b4_parse_param)[
+#endif /* ! YYPARSE_PARAM */]dnl
+])
+
+
+# b4_declare_yyparse
+# ------------------
+m4_define([b4_declare_yyparse],
+[b4_push_if([b4_declare_yyparse_push_],
+ [b4_declare_yyparse_])[]dnl
+])
+
+
+# b4_shared_declarations
+# ----------------------
+# Declaration that might either go into the header (if --defines)
+# or open coded in the parser body.
+m4_define([b4_shared_declarations],
+[b4_cpp_guard_open([b4_spec_defines_file])[
+]b4_declare_yydebug[
+]b4_percent_code_get([[requires]])[
+]b4_token_enums_defines(b4_tokens)[
+]b4_declare_yylstype[
+]b4_declare_yyparse[
+]b4_percent_code_get([[provides]])[
+]b4_cpp_guard_close([b4_spec_defines_file])[]dnl
+])
+
+## -------------- ##
+## Output files. ##
+## -------------- ##
# We do want M4 expansion after # for CPP macros.
m4_changecom()
m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
-b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
- [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])[
+b4_copyright([Bison implementation for Yacc-like parsers in C],
+ [1984, 1989-1990, 2000-2012])[
/* C LALR(1) parser skeleton written by Richard Stallman, by
simplifying the original so-called "semantic" parser. */
]b4_identification
b4_percent_code_get([[top]])[]dnl
-m4_if(b4_prefix, [yy], [],
+m4_if(b4_api_prefix, [yy], [],
+[[/* Substitute the type names. */
+#define YYSTYPE ]b4_api_PREFIX[STYPE
+#define YYSTYPE_IS_TRIVIAL ]b4_api_PREFIX[STYPE_IS_TRIVIAL
+#define YYSTYPE_IS_DECLARED ]b4_api_PREFIX[STYPE_IS_DECLARED]b4_locations_if([[
+#define YYLTYPE ]b4_api_PREFIX[LTYPE
+#define YYLTYPE_IS_TRIVIAL ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+#define YYLTYPE_IS_DECLARED ]b4_api_PREFIX[LTYPE_IS_DECLARED]])])[
+]m4_if(b4_prefix, [yy], [],
[[/* Substitute the variable and function names. */]b4_pull_if([[
#define yyparse ]b4_prefix[parse]])b4_push_if([[
#define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
#define yylval ]b4_prefix[lval
#define yychar ]b4_prefix[char
#define yydebug ]b4_prefix[debug
-#define yynerrs ]b4_prefix[nerrs
-]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
+#define yynerrs ]b4_prefix[nerrs]b4_locations_if([[
+#define yylloc ]b4_prefix[lloc]])])[
/* Copy the first part of user declarations. */
]b4_user_pre_prologue[
-/* Enabling traces. */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug_flag[
-#endif
+]b4_null_define[
/* Enabling verbose error messages. */
#ifdef YYERROR_VERBOSE
# define YYERROR_VERBOSE ]b4_error_verbose_flag[
#endif
-/* Enabling the token table. */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#endif
-
-]b4_percent_code_get([[requires]])[]dnl
-
-b4_token_enums_defines(b4_tokens)[
-
-#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-]m4_ifdef([b4_stype],
-[[typedef union ]b4_union_name[
-{
-]b4_user_stype[
-} YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]],
-[m4_if(b4_tag_seen_flag, 0,
-[[typedef int YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]])])[
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-#endif]b4_locations_if([[
-
-#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
-typedef struct YYLTYPE
-{
- int first_line;
- int first_column;
- int last_line;
- int last_column;
-} YYLTYPE;
-# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif]])b4_push_if([[
-
-#ifndef YYPUSH_DECLS
-# define YYPUSH_DECLS
-struct yypstate;
-typedef struct yypstate yypstate;
-enum { YYPUSH_MORE = 4 };
-
-]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
-])b4_c_function_decl([[yypush_parse]], [[int]],
- [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
- [[[int yypushed_char]], [[yypushed_char]]],
- [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
- [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
- b4_parse_param]))
-b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
- [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
- b4_parse_param]))])
-b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
-b4_c_function_decl([[yypstate_delete]], [[void]],
- [[[yypstate *yyps]], [[yyps]]])[
-#endif]])
-
-b4_percent_code_get([[provides]])[]dnl
+/* In a future release of Bison, this section will be replaced
+ by #include "@basename(]b4_spec_defines_file[@)". */
+]b4_shared_declarations[
-[/* Copy the second part of user declarations. */
+/* Copy the second part of user declarations. */
]b4_user_post_prologue
b4_percent_code_get[]dnl
# define YYSTACK_ALLOC alloca
# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && ]b4_c_modern[
# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+ /* Use EXIT_SUCCESS as a witness for stdlib.h. */
# ifndef EXIT_SUCCESS
# define EXIT_SUCCESS 0
# endif
#endif
#if defined YYCOPY_NEEDED && YYCOPY_NEEDED
-/* Copy COUNT objects from FROM to TO. The source and destination do
+/* Copy COUNT objects from SRC to DST. The source and destination do
not overlap. */
# ifndef YYCOPY
# if defined __GNUC__ && 1 < __GNUC__
-# define YYCOPY(To, From, Count) \
- __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
+# define YYCOPY(Dst, Src, Count) \
+ __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
# else
-# define YYCOPY(To, From, Count) \
- do \
- { \
- YYSIZE_T yyi; \
- for (yyi = 0; yyi < (Count); yyi++) \
- (To)[yyi] = (From)[yyi]; \
- } \
+# define YYCOPY(Dst, Src, Count) \
+ do \
+ { \
+ YYSIZE_T yyi; \
+ for (yyi = 0; yyi < (Count); yyi++) \
+ (Dst)[yyi] = (Src)[yyi]; \
+ } \
while (YYID (0))
# endif
# endif
]b4_translate[
};
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
YYRHS. */
static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
};
#endif
-#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+#if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
First, the terminals, then, starting at YYNTOKENS, nonterminals. */
static const char *const yytname[] =
#define YYRECOVERING() (!!yyerrstatus)
-#define YYBACKUP(Token, Value) \
-do \
- if (yychar == YYEMPTY && yylen == 1) \
- { \
- yychar = (Token); \
- yylval = (Value); \
- YYPOPSTACK (1); \]b4_lac_if([[
- YY_LAC_DISCARD ("YYBACKUP"); \]])[
- goto yybackup; \
- } \
- else \
- { \
+#define YYBACKUP(Token, Value) \
+do \
+ if (yychar == YYEMPTY) \
+ { \
+ yychar = (Token); \
+ yylval = (Value); \
+ YYPOPSTACK (yylen); \
+ yystate = *yyssp; \]b4_lac_if([[
+ YY_LAC_DISCARD ("YYBACKUP"); \]])[
+ goto yybackup; \
+ } \
+ else \
+ { \
yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
YYERROR; \
} \
#endif
/* Enable debugging if requested. */
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
# ifndef YYFPRINTF
# include <stdio.h> /* INFRINGES ON USER NAME SPACE */
/* Nonzero means print parse trace. It is left uninitialized so that
multiple parsers can coexist. */
int yydebug;
-#else /* !YYDEBUG */
+#else /* !]b4_api_PREFIX[DEBUG */
# define YYDPRINTF(Args)
# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
-#endif /* !YYDEBUG */
+#endif /* !]b4_api_PREFIX[DEBUG */
/* YYINITDEPTH -- initial size of the parser's stacks. */
required. Return 1 if memory is exhausted. */
static int
yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
char const *yydebug_prefix,
char const *yydebug_suffix,
#endif
the parser stacks to try to find a new initial context in which the
current lookahead is syntactically acceptable. If it fails to find
such a context, it discards the lookahead. */
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
# define YY_LAC_DISCARD(Event) \
do { \
if (yy_lac_established) \
else
{
if (yy_lac_stack_realloc (yyes_capacity, 1,
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
" (", ")",
#endif
yyes, yyesa, &yyesp, yyes_prev))
}
*++yyesp = yystate;
}
- YYDPRINTF ((stderr, " G%d", *yyesp));
+ YYDPRINTF ((stderr, " G%d", yystate));
}
}
}]])[
]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
{
- YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
+ YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
YYSIZE_T yysize = yysize0;
YYSIZE_T yysize1;
enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
/* Internationalized format string. */
- const char *yyformat = 0;
+ const char *yyformat = YY_NULL;
/* Arguments of yyformat. */
char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
/* Number of reported tokens (one for the "unexpected", one per
break;
}
yyarg[yycount++] = yytname[yyx];
- yysize1 = yysize + yytnamerr (0, yytname[yyx]);
+ yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
if (! (yysize <= yysize1
&& yysize1 <= YYSTACK_ALLOC_MAXIMUM))
return 2;
yysize = yysize1;
}
}]b4_lac_if([[
-# if YYDEBUG
+# if ]b4_api_PREFIX[DEBUG
else if (yydebug)
YYFPRINTF (stderr, "No expected tokens.\n");
# endif]])[
}
#endif /* YYERROR_VERBOSE */
-]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
+]b4_yydestruct_generate([b4_c_function_def])[
-
-/* Prevent warnings from -Wmissing-prototypes. */
-#ifdef YYPARSE_PARAM
-]b4_c_function_decl([yyparse], [int],
- [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
-#else /* ! YYPARSE_PARAM */
-]b4_c_function_decl([yyparse], [int], b4_parse_param)[
-#endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
+]b4_pure_if([], [
b4_declare_scanner_communication_variables])[]b4_push_if([[
-
struct yypstate
{]b4_declare_parser_state_variables[
/* Used to determine if this is the first time this instance has
b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
{
- return yypull_parse (0]m4_ifset([b4_parse_param],
+ return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],
[[, ]b4_c_args(b4_parse_param)])[);
}
int yychar;
YYSTYPE yylval;]b4_locations_if([[
YYLTYPE yylloc;]])])[
- if (yyps == 0)
+ if (yyps)
+ yyps_local = yyps;
+ else
{
yyps_local = yypstate_new ();
if (!yyps_local)
return 2;
}
}
- else
- yyps_local = yyps;
do {
yychar = YYLEX;
yystatus =
yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
} while (yystatus == YYPUSH_MORE);
- if (yyps == 0)
+ if (!yyps)
yypstate_delete (yyps_local);
return yystatus;
}]])[
{
yypstate *yyps;]b4_pure_if([], [[
if (yypstate_allocated)
- return 0;]])[
+ return YY_NULL;]])[
yyps = (yypstate *) malloc (sizeof *yyps);
if (!yyps)
- return 0;
+ return YY_NULL;
yyps->yynew = 1;]b4_pure_if([], [[
yypstate_allocated = 1;]])[
return yyps;
yyresult = 1;
goto yyreturn;
-#if ]b4_lac_if([[1]], [[!defined(yyoverflow) || YYERROR_VERBOSE]])[
+#if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[
/*-------------------------------------------------.
| yyexhaustedlab -- memory exhaustion comes here. |
`-------------------------------------------------*/
]b4_epilogue
b4_defines_if(
[@output(b4_spec_defines_file@)@
-b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
- [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])
-
-b4_percent_code_get([[requires]])[]dnl
-
-b4_token_enums_defines(b4_tokens)
-
-[#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-]m4_ifdef([b4_stype],
-[[typedef union ]b4_union_name[
-{
-]b4_user_stype[
-} YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]],
-[m4_if(b4_tag_seen_flag, 0,
-[[typedef int YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]])])[
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-#endif
-
-]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
+b4_copyright([Bison interface for Yacc-like parsers in C],
+ [1984, 1989-1990, 2000-2012])[
-b4_locations_if(
-[#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
-typedef struct YYLTYPE
-{
- int first_line;
- int first_column;
- int last_line;
- int last_column;
-} YYLTYPE;
-# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif
-
-]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
-)dnl b4_locations_if
-b4_push_if([[
-#ifndef YYPUSH_DECLS
-# define YYPUSH_DECLS
-struct ]b4_prefix[pstate;
-typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
-enum { YYPUSH_MORE = 4 };
-]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
-])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
- [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
- [[[int yypushed_char]], [[yypushed_char]]],
- [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
- [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
- b4_parse_param]))
-b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
- [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
- b4_parse_param]))])
-b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
- [[[void]], []])
-b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
- [[b4_prefix[pstate *yyps]], [[yyps]]])[
-#endif
-]])
-b4_percent_code_get([[provides]])[]dnl
-])dnl b4_defines_if
+]b4_shared_declarations[
+]])dnl b4_defines_if
m4_divert_pop(0)
projects / bison.git / blobdiff