-m4_divert(-1) -*- C -*-
+ -*- C -*-
# Yacc compatible skeleton for Bison
-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004
-# Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# 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
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
-
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-
+#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA
-
-
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# Check the value of %define api.push-pull.
+b4_percent_define_default([[api.push-pull]], [[pull]])
+b4_percent_define_check_values([[[[api.push-pull]],
+ [[pull]], [[push]], [[both]]]])
+b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
+b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
+m4_case(b4_percent_define_get([[api.push-pull]]),
+ [pull], [m4_define([b4_push_flag], [[0]])],
+ [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, 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]])],
+ [m4_define([b4_push_flag], [[1]])])])
+
+# Check the value of %define parse.lac and friends, where LAC stands for
+# lookahead correction.
+b4_percent_define_default([[parse.lac]], [[none]])
+b4_percent_define_default([[parse.lac.es-capacity-initial]], [[20]])
+b4_percent_define_default([[parse.lac.memory-trace]], [[failures]])
+b4_percent_define_check_values([[[[parse.lac]], [[full]], [[none]]]],
+ [[[[parse.lac.memory-trace]],
+ [[failures]], [[full]]]])
+b4_define_flag_if([lac])
+m4_define([b4_lac_flag],
+ [m4_if(b4_percent_define_get([[parse.lac]]),
+ [none], [[0]], [[1]])])
+
+m4_include(b4_pkgdatadir/[c.m4])
## ---------------- ##
## Default values. ##
## Pure/impure interfaces. ##
## ------------------------ ##
+b4_percent_define_default([[api.pure]], [[false]])
+b4_define_flag_if([pure])
+m4_define([b4_pure_flag],
+ [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])
-# b4_pure_if(IF-TRUE, IF-FALSE)
-# -----------------------------
+# b4_yacc_pure_if(IF-TRUE, IF-FALSE)
+# ----------------------------------
# Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
-m4_define([b4_Pure_if],
+m4_define([b4_yacc_pure_if],
[b4_pure_if([m4_ifset([b4_parse_param],
- [$1], [$2])],
- [$2])])
+ [$1], [$2])],
+ [$2])])
# b4_yyerror_args
# ---------------
# Arguments passed to yyerror: user args plus yylloc.
m4_define([b4_yyerror_args],
-[b4_Pure_if([b4_location_if([&yylloc, ])])dnl
+[b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
# b4_lex_param arrives quoted twice, but we want to keep only one level.
m4_define([b4_lex_param],
m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
-b4_location_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
+b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
m4_ifdef([b4_lex_param], b4_lex_param)))
-
## ------------ ##
## Data Types. ##
## ------------ ##
# b4_int_type(MIN, MAX)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
-# MIN to MAX (included). We overwrite the version from c.m4 which relies
-# on "signed char" which is not portable to old K&R compilers.
+# MIN to MAX (included). Overwrite the version from c.m4, which
+# uses only C89 types, so that the user can override the shorter
+# types, and so that pre-C89 compilers are handled correctly.
m4_define([b4_int_type],
-[m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char],
- b4_ints_in($@, [-128], [127]), [1], [yysigned_char],
+[m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
+ b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
- b4_ints_in($@, [0], [65535]), [1], [unsigned short int],
- b4_ints_in($@, [-32768], [32767]), [1], [short int],
+ b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
+ b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
m4_eval([0 <= $1]), [1], [unsigned int],
- [int])])
+ [int])])
## ----------------- ##
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
-[(yyvsp@{m4_eval([$2 - $1])@}m4_ifval([$3], [.$3]))])
+[(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
-[(yylsp@{m4_eval([$2 - $1])@})])
+[(yylsp@{($2) - ($1)@})])
+
+
+## -------------- ##
+## Declarations. ##
+## -------------- ##
+
+# b4_declare_scanner_communication_variables
+# ------------------------------------------
+# Declare the variables that are global, or local to YYPARSE if
+# pure-parser.
+m4_define([b4_declare_scanner_communication_variables], [[
+/* The lookahead symbol. */
+int yychar;
+
+/* The semantic value of the lookahead symbol. */
+YYSTYPE yylval;]b4_locations_if([[
+
+/* Location data for the lookahead symbol. */
+YYLTYPE yylloc;]])b4_pure_if([], [[
+
+/* Number of syntax errors so far. */
+int yynerrs;]])])
+
+
+# b4_declare_parser_state_variables
+# ---------------------------------
+# Declare all the variables that are needed to maintain the parser state
+# between calls to yypush_parse.
+m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
+ /* Number of syntax errors so far. */
+ int yynerrs;
+]])[
+ int yystate;
+ /* Number of tokens to shift before error messages enabled. */
+ int yyerrstatus;
+
+ /* The stacks and their tools:
+ `yyss': related to states.
+ `yyvs': related to semantic values.]b4_locations_if([[
+ `yyls': related to locations.]])[
+
+ Refer to the stacks through separate pointers, to allow yyoverflow
+ to reallocate them elsewhere. */
+
+ /* The state stack. */
+ yytype_int16 yyssa[YYINITDEPTH];
+ yytype_int16 *yyss;
+ yytype_int16 *yyssp;
+
+ /* The semantic value stack. */
+ YYSTYPE yyvsa[YYINITDEPTH];
+ YYSTYPE *yyvs;
+ YYSTYPE *yyvsp;]b4_locations_if([[
+
+ /* The location stack. */
+ YYLTYPE yylsa[YYINITDEPTH];
+ YYLTYPE *yyls;
+ YYLTYPE *yylsp;
+
+ /* The locations where the error started and ended. */
+ YYLTYPE yyerror_range[3];]])[
+
+ YYSIZE_T yystacksize;]b4_lac_if([[
+
+ yytype_int16 yyesa@{]b4_percent_define_get([[parse.lac.es-capacity-initial]])[@};
+ yytype_int16 *yyes;
+ YYSIZE_T yyes_capacity;]])])
+
+
+# b4_declare_yyparse_push_
+# ------------------------
+# Declaration of yyparse (and dependencies) when using the push parser
+# (including in pull mode).
+m4_define([b4_declare_yyparse_push_],
+[[#ifndef YYPUSH_MORE_DEFINED
+# define YYPUSH_MORE_DEFINED
+enum { YYPUSH_MORE = 4 };
+#endif
+
+typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
+
+]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 *ps]], [[ps]]]b4_pure_if([,
+ [[[int pushed_char]], [[pushed_char]]],
+ [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
+ [[b4_api_PREFIX[LTYPE const *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,
+ b4_parse_param]))
+b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
+ [[b4_prefix[pstate *ps]], [[ps]]]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 *ps]], [[ps]]])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
+])
-## --------------------------------------------------------- ##
-## Defining symbol actions, e.g., printers and destructors. ##
-## --------------------------------------------------------- ##
+## -------------- ##
+## Output files. ##
+## -------------- ##
# We do want M4 expansion after # for CPP macros.
m4_changecom()
-m4_divert(0)dnl
-@output @output_parser_name@
-b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
- [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])[
-
-/* As a special exception, when this file is copied by Bison into a
- Bison output file, you may use that output file without restriction.
- This special exception was added by the Free Software Foundation
- in version 1.24 of Bison. */
+m4_divert_push(0)dnl
+@output(b4_parser_file_name@)@
+b4_copyright([Bison implementation for Yacc-like parsers in C],
+ [1984, 1989-1990, 2000-2012])[
-/* Written by Richard Stallman by simplifying the original so called
- ``semantic'' parser. */
+/* C LALR(1) parser skeleton written by Richard Stallman, by
+ simplifying the original so-called "semantic" parser. */
/* All symbols defined below should begin with yy or YY, to avoid
infringing on user name space. This should be done even for local
USER NAME SPACE" below. */
]b4_identification
-m4_if(b4_prefix[], [yy], [],
-[/* Substitute the variable and function names. */
-#define yyparse b4_prefix[]parse
-#define yylex b4_prefix[]lex
-#define yyerror b4_prefix[]error
-#define yylval b4_prefix[]lval
-#define yychar b4_prefix[]char
-#define yydebug b4_prefix[]debug
-#define yynerrs b4_prefix[]nerrs
-b4_location_if([#define yylloc b4_prefix[]lloc])])[
-
-]b4_token_defines(b4_tokens)[
+b4_percent_code_get([[top]])[]dnl
+m4_if(b4_api_prefix, [yy], [],
+[[/* Substitute the type names. */
+#define YYSTYPE ]b4_api_PREFIX[STYPE]b4_locations_if([[
+#define YYLTYPE ]b4_api_PREFIX[LTYPE]])])[
+]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 yypull_parse ]b4_prefix[pull_parse]])[
+#define yypstate_new ]b4_prefix[pstate_new
+#define yypstate_delete ]b4_prefix[pstate_delete
+#define yypstate ]b4_prefix[pstate]])[
+#define yylex ]b4_prefix[lex
+#define yyerror ]b4_prefix[error
+#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]])])[
/* Copy the first part of user declarations. */
-]b4_pre_prologue[
+]b4_user_pre_prologue[
-/* Enabling traces. */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug[
-#endif
+]b4_null_define[
/* Enabling verbose error messages. */
#ifdef YYERROR_VERBOSE
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
-# define YYERROR_VERBOSE ]b4_error_verbose[
+# define YYERROR_VERBOSE ]b4_error_verbose_flag[
#endif
-#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
-]m4_ifdef([b4_stype],
-[b4_syncline([b4_stype_line], [b4_filename])
-typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE;
-/* Line __line__ of yacc.c. */
-b4_syncline([@oline@], [@ofile@])],
-[typedef int YYSTYPE;])[
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
+/* 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. */
+]b4_user_post_prologue
+b4_percent_code_get[]dnl
+
+[#ifdef short
+# undef short
#endif
-]b4_location_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
+#ifdef YYTYPE_UINT8
+typedef YYTYPE_UINT8 yytype_uint8;
+#else
+typedef unsigned char yytype_uint8;
#endif
-])[
-/* Copy the second part of user declarations. */
-]b4_post_prologue
+#ifdef YYTYPE_INT8
+typedef YYTYPE_INT8 yytype_int8;
+#elif ]b4_c_modern[
+typedef signed char yytype_int8;
+#else
+typedef short int yytype_int8;
+#endif
+
+#ifdef YYTYPE_UINT16
+typedef YYTYPE_UINT16 yytype_uint16;
+#else
+typedef unsigned short int yytype_uint16;
+#endif
+
+#ifdef YYTYPE_INT16
+typedef YYTYPE_INT16 yytype_int16;
+#else
+typedef short int yytype_int16;
+#endif
-/* Line __line__ of yacc.c. */
-b4_syncline([@oline@], [@ofile@])[
+#ifndef YYSIZE_T
+# ifdef __SIZE_TYPE__
+# define YYSIZE_T __SIZE_TYPE__
+# elif defined size_t
+# define YYSIZE_T size_t
+# elif ! defined YYSIZE_T && ]b4_c_modern[
+# include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+# define YYSIZE_T size_t
+# else
+# define YYSIZE_T unsigned int
+# endif
+#endif
-#if ! defined (yyoverflow) || YYERROR_VERBOSE
+#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
-# ifndef YYFREE
-# define YYFREE free
+#ifndef YY_
+# if defined YYENABLE_NLS && YYENABLE_NLS
+# if ENABLE_NLS
+# include <libintl.h> /* INFRINGES ON USER NAME SPACE */
+# define YY_(msgid) dgettext ("bison-runtime", msgid)
+# endif
# endif
-# ifndef YYMALLOC
-# define YYMALLOC malloc
+# ifndef YY_
+# define YY_(msgid) msgid
# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E. */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(e) ((void) (e))
+#else
+# define YYUSE(e) /* empty */
+#endif
-/* The parser invokes alloca or malloc; define the necessary symbols. */
+/* Identity function, used to suppress warnings about constant conditions. */
+#ifndef lint
+# define YYID(n) (n)
+#else
+]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
+{
+ return yyi;
+}
+#endif
+
+#if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
+
+/* The parser invokes alloca or malloc; define the necessary symbols. */]dnl
+b4_push_if([], [b4_lac_if([], [[
# ifdef YYSTACK_USE_ALLOCA
# if YYSTACK_USE_ALLOCA
-# define YYSTACK_ALLOC alloca
-# endif
-# else
-# if defined (alloca) || defined (_ALLOCA_H)
-# define YYSTACK_ALLOC alloca
-# else
# ifdef __GNUC__
# define YYSTACK_ALLOC __builtin_alloca
+# elif defined __BUILTIN_VA_ARG_INCR
+# include <alloca.h> /* INFRINGES ON USER NAME SPACE */
+# elif defined _AIX
+# define YYSTACK_ALLOC __alloca
+# elif defined _MSC_VER
+# include <malloc.h> /* INFRINGES ON USER NAME SPACE */
+# define alloca _alloca
+# else
+# 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
# endif
# endif
-# endif
+# endif]])])[
# ifdef YYSTACK_ALLOC
- /* Pacify GCC's `empty if-body' warning. */
-# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
-# else
-# if defined (__STDC__) || defined (__cplusplus)
-# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
-# define YYSIZE_T size_t
+ /* Pacify GCC's `empty if-body' warning. */
+# define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
+# ifndef YYSTACK_ALLOC_MAXIMUM
+ /* The OS might guarantee only one guard page at the bottom of the stack,
+ and a page size can be as small as 4096 bytes. So we cannot safely
+ invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
+ to allow for a few compiler-allocated temporary stack slots. */
+# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
# endif
+# else
# define YYSTACK_ALLOC YYMALLOC
# define YYSTACK_FREE YYFREE
-# endif
-#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
+# ifndef YYSTACK_ALLOC_MAXIMUM
+# define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
+# endif
+# if (defined __cplusplus && ! defined EXIT_SUCCESS \
+ && ! ((defined YYMALLOC || defined malloc) \
+ && (defined YYFREE || defined free)))
+# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+# ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+# endif
+# endif
+# ifndef YYMALLOC
+# define YYMALLOC malloc
+# if ! defined malloc && ! defined EXIT_SUCCESS && ]b4_c_modern[
+void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
+# endif
+# endif
+# ifndef YYFREE
+# define YYFREE free
+# if ! defined free && ! defined EXIT_SUCCESS && ]b4_c_modern[
+void free (void *); /* INFRINGES ON USER NAME SPACE */
+# endif
+# endif
+# endif]b4_lac_if([[
+# define YYCOPY_NEEDED 1]])[
+#endif]b4_lac_if([], [[ /* ! defined yyoverflow || YYERROR_VERBOSE */]])[
-#if (! defined (yyoverflow) \
- && (! defined (__cplusplus) \
- || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
- && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))
+#if (! defined yyoverflow \
+ && (! defined __cplusplus \
+ || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
+ && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))
/* A type that is properly aligned for any stack member. */
union yyalloc
{
- short int yyss;
- YYSTYPE yyvs;
- ]b4_location_if([ YYLTYPE yyls;
-])dnl
-[};
+ yytype_int16 yyss_alloc;
+ YYSTYPE yyvs_alloc;]b4_locations_if([
+ YYLTYPE yyls_alloc;])[
+};
/* The size of the maximum gap between one aligned stack and the next. */
# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
/* The size of an array large to enough to hold all stacks, each with
N elements. */
-]b4_location_if(
+]b4_locations_if(
[# define YYSTACK_BYTES(N) \
- ((N) * (sizeof (short int) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+ ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+ 2 * YYSTACK_GAP_MAXIMUM)],
[# define YYSTACK_BYTES(N) \
- ((N) * (sizeof (short int) + sizeof (YYSTYPE)) \
+ ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
+ YYSTACK_GAP_MAXIMUM)])[
-/* Copy COUNT objects from FROM to TO. 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)))
-# else
-# define YYCOPY(To, From, Count) \
- do \
- { \
- register YYSIZE_T yyi; \
- for (yyi = 0; yyi < (Count); yyi++) \
- (To)[yyi] = (From)[yyi]; \
- } \
- while (0)
-# endif
-# endif
+# define YYCOPY_NEEDED 1
/* Relocate STACK from its old location to the new one. The
local variables YYSIZE and YYSTACKSIZE give the old and new number of
elements in the stack, and YYPTR gives the new location of the
stack. Advance YYPTR to a properly aligned location for the next
stack. */
-# define YYSTACK_RELOCATE(Stack) \
+# define YYSTACK_RELOCATE(Stack_alloc, Stack) \
do \
{ \
YYSIZE_T yynewbytes; \
- YYCOPY (&yyptr->Stack, Stack, yysize); \
- Stack = &yyptr->Stack; \
+ YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
+ Stack = &yyptr->Stack_alloc; \
yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
yyptr += yynewbytes / sizeof (*yyptr); \
} \
- while (0)
+ while (YYID (0))
#endif
-#if defined (__STDC__) || defined (__cplusplus)
- typedef signed char yysigned_char;
-#else
- typedef short int yysigned_char;
-#endif
+#if defined YYCOPY_NEEDED && YYCOPY_NEEDED
+/* Copy COUNT objects from SRC to DST. The source and destination do
+ not overlap. */
+# ifndef YYCOPY
+# if defined __GNUC__ && 1 < __GNUC__
+# define YYCOPY(Dst, Src, Count) \
+ __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
+# else
+# define YYCOPY(Dst, Src, Count) \
+ do \
+ { \
+ YYSIZE_T yyi; \
+ for (yyi = 0; yyi < (Count); yyi++) \
+ (Dst)[yyi] = (Src)[yyi]; \
+ } \
+ while (YYID (0))
+# endif
+# endif
+#endif /* !YYCOPY_NEEDED */
-/* YYFINAL -- State number of the termination state. */
+/* YYFINAL -- State number of the termination state. */
#define YYFINAL ]b4_final_state_number[
/* YYLAST -- Last index in YYTABLE. */
#define YYLAST ]b4_last[
-/* YYNTOKENS -- Number of terminals. */
+/* YYNTOKENS -- Number of terminals. */
#define YYNTOKENS ]b4_tokens_number[
-/* YYNNTS -- Number of nonterminals. */
+/* YYNNTS -- Number of nonterminals. */
#define YYNNTS ]b4_nterms_number[
-/* YYNRULES -- Number of rules. */
+/* YYNRULES -- Number of rules. */
#define YYNRULES ]b4_rules_number[
-/* YYNRULES -- Number of states. */
+/* YYNRULES -- Number of states. */
#define YYNSTATES ]b4_states_number[
/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
#define YYUNDEFTOK ]b4_undef_token_number[
#define YYMAXUTOK ]b4_user_token_number_max[
-#define YYTRANSLATE(YYX) \
+#define YYTRANSLATE(YYX) \
((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
]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[] =
]b4_prhs[
};
-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
+/* YYRHS -- A `-1'-separated list of the rules' RHS. */
static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
{
]b4_rhs[
};
#endif
-#if YYDEBUG || YYERROR_VERBOSE
-/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
- First, the terminals, then, starting at YYNTOKENS, nonterminals. */
+#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[] =
{
]b4_tname[
]b4_r2[
};
-/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
- STATE-NUM when YYTABLE doesn't specify something else to do. Zero
+/* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
+ Performed when YYTABLE doesn't specify something else to do. Zero
means the default is an error. */
static const ]b4_int_type_for([b4_defact])[ yydefact[] =
{
]b4_defact[
};
-/* YYDEFGOTO[NTERM-NUM]. */
+/* YYDEFGOTO[NTERM-NUM]. */
static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
{
]b4_defgoto[
/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
positive, shift that token. If negative, reduce the rule which
- number is the opposite. If zero, do what YYDEFACT says.
- If YYTABLE_NINF, syntax error. */
+ number is the opposite. If YYTABLE_NINF, syntax error. */
#define YYTABLE_NINF ]b4_table_ninf[
static const ]b4_int_type_for([b4_table])[ yytable[] =
{
]b4_table[
};
+#define yypact_value_is_default(yystate) \
+ ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
+
+#define yytable_value_is_error(yytable_value) \
+ ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
+
static const ]b4_int_type_for([b4_check])[ yycheck[] =
{
]b4_check[
]b4_stos[
};
-#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
-# define YYSIZE_T __SIZE_TYPE__
-#endif
-#if ! defined (YYSIZE_T) && defined (size_t)
-# define YYSIZE_T size_t
-#endif
-#if ! defined (YYSIZE_T)
-# if defined (__STDC__) || defined (__cplusplus)
-# include <stddef.h> /* INFRINGES ON USER NAME SPACE */
-# define YYSIZE_T size_t
-# endif
-#endif
-#if ! defined (YYSIZE_T)
-# define YYSIZE_T unsigned int
-#endif
-
#define yyerrok (yyerrstatus = 0)
#define yyclearin (yychar = YYEMPTY)
#define YYEMPTY (-2)
/* Like YYERROR except do call yyerror. This remains here temporarily
to ease the transition to the new meaning of YYERROR, for GCC.
- Once GCC version 2 has supplanted version 1, this can go. */
+ Once GCC version 2 has supplanted version 1, this can go. However,
+ YYFAIL appears to be in use. Nevertheless, it is formally deprecated
+ in Bison 2.4.2's NEWS entry, where a plan to phase it out is
+ discussed. */
#define YYFAIL goto yyerrlab
+#if defined YYFAIL
+ /* This is here to suppress warnings from the GCC cpp's
+ -Wunused-macros. Normally we don't worry about that warning, but
+ some users do, and we want to make it easy for users to remove
+ YYFAIL uses, which will produce warnings from Bison 2.5. */
+#endif
#define YYRECOVERING() (!!yyerrstatus)
-#define YYBACKUP(Token, Value) \
-do \
- if (yychar == YYEMPTY && yylen == 1) \
- { \
- yychar = (Token); \
- yylval = (Value); \
- yytoken = YYTRANSLATE (yychar); \
- YYPOPSTACK; \
- goto yybackup; \
- } \
- else \
- { \
- yyerror (]b4_yyerror_args["syntax error: cannot back up");\
+#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; \
} \
-while (0)
+while (YYID (0))
#define YYTERROR 1
#define YYERRCODE 256
-
-/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
- If N is 0, then set CURRENT to the empty location which ends
- the previous symbol: RHS[0] (always defined). */
-
+]b4_yylloc_default_define[
#define YYRHSLOC(Rhs, K) ((Rhs)[K])
-#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N) \
- do \
- if (N) \
- { \
- (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
- (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
- (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
- (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
- } \
- else \
- { \
- (Current).first_line = (Current).last_line = \
- YYRHSLOC(Rhs, 0).last_line; \
- (Current).first_column = (Current).last_column = \
- YYRHSLOC(Rhs, 0).last_column; \
- } \
- while (0)
-#endif
+]b4_locations_if([[
/* YY_LOCATION_PRINT -- Print the location on the stream.
we won't break user code: when these are the locations we know. */
#ifndef YY_LOCATION_PRINT
-# if YYLTYPE_IS_TRIVIAL
+# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
# define YY_LOCATION_PRINT(File, Loc) \
fprintf (File, "%d.%d-%d.%d", \
- (Loc).first_line, (Loc).first_column, \
- (Loc).last_line, (Loc).last_column)
+ (Loc).first_line, (Loc).first_column, \
+ (Loc).last_line, (Loc).last_column)
# else
# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
# endif
-#endif
+#endif]], [[
+
+
+/* This macro is provided for backward compatibility. */
+
+#ifndef YY_LOCATION_PRINT
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+#endif]])[
/* YYLEX -- calling `yylex' with the right arguments. */
#ifdef YYLEX_PARAM
-# define YYLEX yylex (]b4_pure_if([&yylval[]b4_location_if([, &yylloc]), ])[YYLEX_PARAM)
+# define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
#else
# define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
#endif
/* Enable debugging if requested. */
-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG
# ifndef YYFPRINTF
# include <stdio.h> /* INFRINGES ON USER NAME SPACE */
do { \
if (yydebug) \
YYFPRINTF Args; \
-} while (0)
+} while (YYID (0))
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
-do { \
- if (yydebug) \
- { \
- YYFPRINTF (stderr, "%s ", Title); \
- yysymprint (stderr, \
- Type, Value]b4_location_if([, Location])[); \
- YYFPRINTF (stderr, "\n"); \
- } \
-} while (0)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
+do { \
+ if (yydebug) \
+ { \
+ YYFPRINTF (stderr, "%s ", Title); \
+ yy_symbol_print (stderr, \
+ Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
+ YYFPRINTF (stderr, "\n"); \
+ } \
+} while (YYID (0))
+
+]b4_yy_symbol_print_generate([b4_c_function_def])[
/*------------------------------------------------------------------.
| yy_stack_print -- Print the state stack from its BOTTOM up to its |
`------------------------------------------------------------------*/
]b4_c_function_def([yy_stack_print], [static void],
- [[short int *bottom], [bottom]],
- [[short int *top], [top]])[
+ [[yytype_int16 *yybottom], [yybottom]],
+ [[yytype_int16 *yytop], [yytop]])[
{
YYFPRINTF (stderr, "Stack now");
- for (/* Nothing. */; bottom <= top; ++bottom)
- YYFPRINTF (stderr, " %d", *bottom);
+ for (; yybottom <= yytop; yybottom++)
+ {
+ int yybot = *yybottom;
+ YYFPRINTF (stderr, " %d", yybot);
+ }
YYFPRINTF (stderr, "\n");
}
do { \
if (yydebug) \
yy_stack_print ((Bottom), (Top)); \
-} while (0)
+} while (YYID (0))
/*------------------------------------------------.
`------------------------------------------------*/
]b4_c_function_def([yy_reduce_print], [static void],
- [[int yyrule], [yyrule]])[
+ [[YYSTYPE *yyvsp], [yyvsp]],
+ b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
+ ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
+ b4_parse_param]))[
{
+ int yynrhs = yyr2[yyrule];
int yyi;
- unsigned int yylno = yyrline[yyrule];
- YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
- yyrule - 1, yylno);
- /* Print the symbols being reduced, and their result. */
- for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
- YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
- YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
+ unsigned long int yylno = yyrline[yyrule];
+ YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
+ yyrule - 1, yylno);
+ /* The symbols being reduced. */
+ for (yyi = 0; yyi < yynrhs; yyi++)
+ {
+ YYFPRINTF (stderr, " $%d = ", yyi + 1);
+ yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
+ &]b4_rhs_value(yynrhs, yyi + 1)[
+ ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
+ b4_user_args[);
+ YYFPRINTF (stderr, "\n");
+ }
}
# define YY_REDUCE_PRINT(Rule) \
do { \
if (yydebug) \
- yy_reduce_print (Rule); \
-} while (0)
+ yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
+} while (YYID (0))
/* 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. */
if the built-in stack extension method is used).
Do not make this value too large; the results are undefined if
- SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
+ YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
evaluated with infinite-precision integer arithmetic. */
-#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0
-# undef YYMAXDEPTH
-#endif
-
#ifndef YYMAXDEPTH
# define YYMAXDEPTH ]b4_stack_depth_max[
+#endif]b4_lac_if([[
+
+/* Given a state stack such that *YYBOTTOM is its bottom, such that
+ *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
+ stack, and such that *YYCAPACITY is the maximum number of elements it
+ can hold without a reallocation, make sure there is enough room to
+ store YYADD more elements. If not, allocate a new stack using
+ YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
+ *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
+ location. If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
+ using YYSTACK_FREE. Return 0 if successful or if no reallocation is
+ required. Return 1 if memory is exhausted. */
+static int
+yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
+#if ]b4_api_PREFIX[DEBUG
+ char const *yydebug_prefix,
+ char const *yydebug_suffix,
+#endif
+ yytype_int16 **yybottom,
+ yytype_int16 *yybottom_no_free,
+ yytype_int16 **yytop, yytype_int16 *yytop_empty)
+{
+ YYSIZE_T yysize_old =
+ *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
+ YYSIZE_T yysize_new = yysize_old + yyadd;
+ if (*yycapacity < yysize_new)
+ {
+ YYSIZE_T yyalloc = 2 * yysize_new;
+ yytype_int16 *yybottom_new;
+ /* Use YYMAXDEPTH for maximum stack size given that the stack
+ should never need to grow larger than the main state stack
+ needs to grow without LAC. */
+ if (YYMAXDEPTH < yysize_new)
+ {
+ YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
+ yydebug_suffix));
+ return 1;
+ }
+ if (YYMAXDEPTH < yyalloc)
+ yyalloc = YYMAXDEPTH;
+ yybottom_new =
+ (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new);
+ if (!yybottom_new)
+ {
+ YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
+ yydebug_suffix));
+ return 1;
+ }
+ if (*yytop != yytop_empty)
+ {
+ YYCOPY (yybottom_new, *yybottom, yysize_old);
+ *yytop = yybottom_new + (yysize_old - 1);
+ }
+ if (*yybottom != yybottom_no_free)
+ YYSTACK_FREE (*yybottom);
+ *yybottom = yybottom_new;
+ *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]),
+ [full], [[
+ YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix,
+ (unsigned long int) yyalloc, yydebug_suffix));]])[
+ }
+ return 0;
+}
+
+/* Establish the initial context for the current lookahead if no initial
+ context is currently established.
+
+ We define a context as a snapshot of the parser stacks. We define
+ the initial context for a lookahead as the context in which the
+ parser initially examines that lookahead in order to select a
+ syntactic action. Thus, if the lookahead eventually proves
+ syntactically unacceptable (possibly in a later context reached via a
+ series of reductions), the initial context can be used to determine
+ the exact set of tokens that would be syntactically acceptable in the
+ lookahead's place. Moreover, it is the context after which any
+ further semantic actions would be erroneous because they would be
+ determined by a syntactically unacceptable token.
+
+ YY_LAC_ESTABLISH should be invoked when a reduction is about to be
+ performed in an inconsistent state (which, for the purposes of LAC,
+ includes consistent states that don't know they're consistent because
+ their default reductions have been disabled). Iff there is a
+ lookahead token, it should also be invoked before reporting a syntax
+ error. This latter case is for the sake of the debugging output.
+
+ For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as
+ follows. If no initial context is currently established for the
+ current lookahead, then check if that lookahead can eventually be
+ shifted if syntactic actions continue from the current context.
+ Report a syntax error if it cannot. */
+#define YY_LAC_ESTABLISH \
+do { \
+ if (!yy_lac_established) \
+ { \
+ YYDPRINTF ((stderr, \
+ "LAC: initial context established for %s\n", \
+ yytname[yytoken])); \
+ yy_lac_established = 1; \
+ { \
+ int yy_lac_status = \
+ yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken); \
+ if (yy_lac_status == 2) \
+ goto yyexhaustedlab; \
+ if (yy_lac_status == 1) \
+ goto yyerrlab; \
+ } \
+ } \
+} while (YYID (0))
+
+/* Discard any previous initial lookahead context because of Event,
+ which may be a lookahead change or an invalidation of the currently
+ established initial context for the current lookahead.
+
+ The most common example of a lookahead change is a shift. An example
+ of both cases is syntax error recovery. That is, a syntax error
+ occurs when the lookahead is syntactically erroneous for the
+ currently established initial context, so error recovery manipulates
+ 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 ]b4_api_PREFIX[DEBUG
+# define YY_LAC_DISCARD(Event) \
+do { \
+ if (yy_lac_established) \
+ { \
+ if (yydebug) \
+ YYFPRINTF (stderr, "LAC: initial context discarded due to " \
+ Event "\n"); \
+ yy_lac_established = 0; \
+ } \
+} while (YYID (0))
+#else
+# define YY_LAC_DISCARD(Event) yy_lac_established = 0
+#endif
+
+/* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can
+ eventually (after perhaps some reductions) be shifted, return 1 if
+ not, or return 2 if memory is exhausted. As preconditions and
+ postconditions: *YYES_CAPACITY is the allocated size of the array to
+ which *YYES points, and either *YYES = YYESA or *YYES points to an
+ array allocated with YYSTACK_ALLOC. yy_lac may overwrite the
+ contents of either array, alter *YYES and *YYES_CAPACITY, and free
+ any old *YYES other than YYESA. */
+static int
+yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
+ YYSIZE_T *yyes_capacity, yytype_int16 *yyssp, int yytoken)
+{
+ yytype_int16 *yyes_prev = yyssp;
+ yytype_int16 *yyesp = yyes_prev;
+ YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken]));
+ if (yytoken == YYUNDEFTOK)
+ {
+ YYDPRINTF ((stderr, " Always Err\n"));
+ return 1;
+ }
+ while (1)
+ {
+ int yyrule = yypact[*yyesp];
+ if (yypact_value_is_default (yyrule)
+ || (yyrule += yytoken) < 0 || YYLAST < yyrule
+ || yycheck[yyrule] != yytoken)
+ {
+ yyrule = yydefact[*yyesp];
+ if (yyrule == 0)
+ {
+ YYDPRINTF ((stderr, " Err\n"));
+ return 1;
+ }
+ }
+ else
+ {
+ yyrule = yytable[yyrule];
+ if (yytable_value_is_error (yyrule))
+ {
+ YYDPRINTF ((stderr, " Err\n"));
+ return 1;
+ }
+ if (0 < yyrule)
+ {
+ YYDPRINTF ((stderr, " S%d\n", yyrule));
+ return 0;
+ }
+ yyrule = -yyrule;
+ }
+ {
+ YYSIZE_T yylen = yyr2[yyrule];
+ YYDPRINTF ((stderr, " R%d", yyrule - 1));
+ if (yyesp != yyes_prev)
+ {
+ YYSIZE_T yysize = yyesp - *yyes + 1;
+ if (yylen < yysize)
+ {
+ yyesp -= yylen;
+ yylen = 0;
+ }
+ else
+ {
+ yylen -= yysize;
+ yyesp = yyes_prev;
+ }
+ }
+ if (yylen)
+ yyesp = yyes_prev -= yylen;
+ }
+ {
+ int yystate;
+ {
+ int yylhs = yyr1[yyrule] - YYNTOKENS;
+ yystate = yypgoto[yylhs] + *yyesp;
+ if (yystate < 0 || YYLAST < yystate
+ || yycheck[yystate] != *yyesp)
+ yystate = yydefgoto[yylhs];
+ else
+ yystate = yytable[yystate];
+ }
+ if (yyesp == yyes_prev)
+ {
+ yyesp = *yyes;
+ *yyesp = yystate;
+ }
+ else
+ {
+ if (yy_lac_stack_realloc (yyes_capacity, 1,
+#if ]b4_api_PREFIX[DEBUG
+ " (", ")",
#endif
+ yyes, yyesa, &yyesp, yyes_prev))
+ {
+ YYDPRINTF ((stderr, "\n"));
+ return 2;
+ }
+ *++yyesp = yystate;
+ }
+ YYDPRINTF ((stderr, " G%d", yystate));
+ }
+ }
+}]])[
-\f
#if YYERROR_VERBOSE
# ifndef yystrlen
-# if defined (__GLIBC__) && defined (_STRING_H)
+# if defined __GLIBC__ && defined _STRING_H
# define yystrlen strlen
# else
/* Return the length of YYSTR. */
-static YYSIZE_T
-# if defined (__STDC__) || defined (__cplusplus)
-yystrlen (const char *yystr)
-# else
-yystrlen (yystr)
- const char *yystr;
-# endif
+]b4_c_function_def([yystrlen], [static YYSIZE_T],
+ [[const char *yystr], [yystr]])[
{
- register const char *yys = yystr;
-
- while (*yys++ != '\0')
+ YYSIZE_T yylen;
+ for (yylen = 0; yystr[yylen]; yylen++)
continue;
-
- return yys - yystr - 1;
+ return yylen;
}
# endif
# endif
# ifndef yystpcpy
-# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
+# if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
# define yystpcpy stpcpy
# else
/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
YYDEST. */
-static char *
-# if defined (__STDC__) || defined (__cplusplus)
-yystpcpy (char *yydest, const char *yysrc)
-# else
-yystpcpy (yydest, yysrc)
- char *yydest;
- const char *yysrc;
-# endif
+]b4_c_function_def([yystpcpy], [static char *],
+ [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
{
- register char *yyd = yydest;
- register const char *yys = yysrc;
+ char *yyd = yydest;
+ const char *yys = yysrc;
while ((*yyd++ = *yys++) != '\0')
continue;
# endif
# endif
-#endif /* !YYERROR_VERBOSE */
+# ifndef yytnamerr
+/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
+ quotes and backslashes, so that it's suitable for yyerror. The
+ heuristic is that double-quoting is unnecessary unless the string
+ contains an apostrophe, a comma, or backslash (other than
+ backslash-backslash). YYSTR is taken from yytname. If YYRES is
+ null, do not copy; instead, return the length of what the result
+ would have been. */
+static YYSIZE_T
+yytnamerr (char *yyres, const char *yystr)
+{
+ if (*yystr == '"')
+ {
+ YYSIZE_T yyn = 0;
+ char const *yyp = yystr;
+
+ for (;;)
+ switch (*++yyp)
+ {
+ case '\'':
+ case ',':
+ goto do_not_strip_quotes;
+
+ case '\\':
+ if (*++yyp != '\\')
+ goto do_not_strip_quotes;
+ /* Fall through. */
+ default:
+ if (yyres)
+ yyres[yyn] = *yyp;
+ yyn++;
+ break;
+
+ case '"':
+ if (yyres)
+ yyres[yyn] = '\0';
+ return yyn;
+ }
+ do_not_strip_quotes: ;
+ }
-\f
+ if (! yyres)
+ return yystrlen (yystr);
-#if YYDEBUG
-]b4_yysymprint_generate([b4_c_function_def])[
-#endif /* ! YYDEBUG */
-]b4_yydestruct_generate([b4_c_function_def])
-\f
+ return yystpcpy (yyres, yystr) - yyres;
+}
+# endif
-/* Prevent warnings from -Wmissing-prototypes. */
+/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
+ about the unexpected token YYTOKEN for the state stack whose top is
+ YYSSP.]b4_lac_if([[ In order to see if a particular token T is a
+ valid looakhead, invoke yy_lac (YYESA, YYES, YYES_CAPACITY, YYSSP, T).]])[
+
+ Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is
+ not large enough to hold the message. In that case, also set
+ *YYMSG_ALLOC to the required number of bytes. Return 2 if the
+ required number of bytes is too large to store]b4_lac_if([[ or if
+ yy_lac returned 2]])[. */
+static int
+yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
+ ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
+ YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int 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 = YY_NULL;
+ /* Arguments of yyformat. */
+ char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+ /* Number of reported tokens (one for the "unexpected", one per
+ "expected"). */
+ int yycount = 0;
+
+ /* There are many possibilities here to consider:
+ - Assume YYFAIL is not used. It's too flawed to consider. See
+ <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html>
+ for details. YYERROR is fine as it does not invoke this
+ function.
+ - If this state is a consistent state with a default action, then
+ the only way this function was invoked is if the default action
+ is an error action. In that case, don't check for expected
+ tokens because there are none.
+ - The only way there can be no lookahead present (in yychar) is if
+ this state is a consistent state with a default action. Thus,
+ detecting the absence of a lookahead is sufficient to determine
+ that there is no unexpected or expected token to report. In that
+ case, just report a simple "syntax error".
+ - Don't assume there isn't a lookahead just because this state is a
+ consistent state with a default action. There might have been a
+ previous inconsistent state, consistent state with a non-default
+ action, or user semantic action that manipulated yychar.]b4_lac_if([[
+ In the first two cases, it might appear that the current syntax
+ error should have been detected in the previous state when yy_lac
+ was invoked. However, at that time, there might have been a
+ different syntax error that discarded a different initial context
+ during error recovery, leaving behind the current lookahead.]], [[
+ - Of course, the expected token list depends on states to have
+ correct lookahead information, and it depends on the parser not
+ to perform extra reductions after fetching a lookahead from the
+ scanner and before detecting a syntax error. Thus, state merging
+ (from LALR or IELR) and default reductions corrupt the expected
+ token list. However, the list is correct for canonical LR with
+ one exception: it will still contain any token that will not be
+ accepted due to an error action in a later state.]])[
+ */
+ if (yytoken != YYEMPTY)
+ {
+ int yyn = yypact[*yyssp];]b4_lac_if([[
+ YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[
+ yyarg[yycount++] = yytname[yytoken];
+ if (!yypact_value_is_default (yyn))
+ {]b4_lac_if([], [[
+ /* Start YYX at -YYN if negative to avoid negative indexes in
+ YYCHECK. In other words, skip the first -YYN actions for
+ this state because they are default actions. */
+ int yyxbegin = yyn < 0 ? -yyn : 0;
+ /* Stay within bounds of both yycheck and yytname. */
+ int yychecklim = YYLAST - yyn + 1;
+ int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;]])[
+ int yyx;]b4_lac_if([[
+
+ for (yyx = 0; yyx < YYNTOKENS; ++yyx)
+ if (yyx != YYTERROR && yyx != YYUNDEFTOK)
+ {
+ {
+ int yy_lac_status = yy_lac (yyesa, yyes, yyes_capacity,
+ yyssp, yyx);
+ if (yy_lac_status == 2)
+ return 2;
+ if (yy_lac_status == 1)
+ continue;
+ }]], [[
+
+ for (yyx = yyxbegin; yyx < yyxend; ++yyx)
+ if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
+ && !yytable_value_is_error (yytable[yyx + yyn]))
+ {]])[
+ if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
+ {
+ yycount = 1;
+ yysize = yysize0;
+ break;
+ }
+ yyarg[yycount++] = yytname[yyx];
+ yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
+ if (! (yysize <= yysize1
+ && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+ return 2;
+ yysize = yysize1;
+ }
+ }]b4_lac_if([[
+# if ]b4_api_PREFIX[DEBUG
+ else if (yydebug)
+ YYFPRINTF (stderr, "No expected tokens.\n");
+# endif]])[
+ }
-#ifdef YYPARSE_PARAM
-# if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void *YYPARSE_PARAM);
-# else
-int yyparse ();
-# endif
-#else /* ! YYPARSE_PARAM */
-b4_c_function_decl([yyparse], [int], b4_parse_param)
-#endif /* ! YYPARSE_PARAM */
+ switch (yycount)
+ {
+# define YYCASE_(N, S) \
+ case N: \
+ yyformat = S; \
+ break
+ YYCASE_(0, YY_("syntax error"));
+ YYCASE_(1, YY_("syntax error, unexpected %s"));
+ YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
+ YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+ YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+ YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+# undef YYCASE_
+ }
+ yysize1 = yysize + yystrlen (yyformat);
+ if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+ return 2;
+ yysize = yysize1;
-m4_divert_push([KILL])# ======================== M4 code.
-# b4_declare_parser_variables
-# ---------------------------
-# Declare the variables that are global, or local to YYPARSE if
-# pure-parser.
-m4_define([b4_declare_parser_variables],
-[/* The look-ahead symbol. */
-int yychar;
+ if (*yymsg_alloc < yysize)
+ {
+ *yymsg_alloc = 2 * yysize;
+ if (! (yysize <= *yymsg_alloc
+ && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
+ *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
+ return 1;
+ }
+
+ /* Avoid sprintf, as that infringes on the user's name space.
+ Don't have undefined behavior even if the translation
+ produced a string with the wrong number of "%s"s. */
+ {
+ char *yyp = *yymsg;
+ int yyi = 0;
+ while ((*yyp = *yyformat) != '\0')
+ if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
+ {
+ yyp += yytnamerr (yyp, yyarg[yyi++]);
+ yyformat += 2;
+ }
+ else
+ {
+ yyp++;
+ yyformat++;
+ }
+ }
+ return 0;
+}
+#endif /* YYERROR_VERBOSE */
-/* The semantic value of the look-ahead symbol. */
-YYSTYPE yylval;
+]b4_yydestruct_generate([b4_c_function_def])[
-/* Number of syntax errors so far. */
-int yynerrs;b4_location_if([
-/* Location data for the look-ahead symbol. */
-YYLTYPE yylloc;])
-])
-m4_divert_pop([KILL])dnl# ====================== End of M4 code.
+]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
+ been used. */
+ int yynew;
+ };]b4_pure_if([], [[
+
+static char yypstate_allocated = 0;]])b4_pull_if([
+
+b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
+{
+ return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],
+ [[, ]b4_c_args(b4_parse_param)])[);
+}
-b4_pure_if([],
- [b4_declare_parser_variables])
+]b4_c_function_def([[yypull_parse]], [[int]],
+ [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
+ b4_parse_param]))[
+{
+ int yystatus;
+ yypstate *yyps_local;]b4_pure_if([[
+ int yychar;
+ YYSTYPE yylval;]b4_locations_if([[
+ YYLTYPE yylloc;]])])[
+ if (yyps)
+ yyps_local = yyps;
+ else
+ {
+ yyps_local = yypstate_new ();
+ if (!yyps_local)
+ {]b4_pure_if([[
+ yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
+ if (!yypstate_allocated)
+ yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
+ return 2;
+ }
+ }
+ 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)
+ yypstate_delete (yyps_local);
+ return yystatus;
+}]])[
+
+/* Initialize the parser data structure. */
+]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
+{
+ yypstate *yyps;]b4_pure_if([], [[
+ if (yypstate_allocated)
+ return YY_NULL;]])[
+ yyps = (yypstate *) malloc (sizeof *yyps);
+ if (!yyps)
+ return YY_NULL;
+ yyps->yynew = 1;]b4_pure_if([], [[
+ yypstate_allocated = 1;]])[
+ return yyps;
+}
+
+]b4_c_function_def([[yypstate_delete]], [[void]],
+ [[[yypstate *yyps]], [[yyps]]])[
+{
+#ifndef yyoverflow
+ /* If the stack was reallocated but the parse did not complete, then the
+ stack still needs to be freed. */
+ if (!yyps->yynew && yyps->yyss != yyps->yyssa)
+ YYSTACK_FREE (yyps->yyss);
+#endif]b4_lac_if([[
+ if (!yyps->yynew && yyps->yyes != yyps->yyesa)
+ YYSTACK_FREE (yyps->yyes);]])[
+ free (yyps);]b4_pure_if([], [[
+ yypstate_allocated = 0;]])[
+}
+]b4_pure_if([[
+#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
+#define yystate yyps->yystate
+#define yyerrstatus yyps->yyerrstatus
+#define yyssa yyps->yyssa
+#define yyss yyps->yyss
+#define yyssp yyps->yyssp
+#define yyvsa yyps->yyvsa
+#define yyvs yyps->yyvs
+#define yyvsp yyps->yyvsp]b4_locations_if([[
+#define yylsa yyps->yylsa
+#define yyls yyps->yyls
+#define yylsp yyps->yylsp
+#define yyerror_range yyps->yyerror_range]])[
+#define yystacksize yyps->yystacksize]b4_lac_if([[
+#define yyesa yyps->yyesa
+#define yyes yyps->yyes
+#define yyes_capacity yyps->yyes_capacity]])[
+
+
+/*---------------.
+| yypush_parse. |
+`---------------*/
+
+]b4_c_function_def([[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]))], [[
/*----------.
`----------*/
#ifdef YYPARSE_PARAM
-# if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void *YYPARSE_PARAM)
-# else
-int yyparse (YYPARSE_PARAM)
- void *YYPARSE_PARAM;
-# endif
+]b4_c_function_def([yyparse], [int],
+ [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
#else /* ! YYPARSE_PARAM */
-b4_c_function_def([yyparse], [int], b4_parse_param)
-#endif
-{[
- ]b4_pure_if([b4_declare_parser_variables])[
- register int yystate;
- register int yyn;
+]b4_c_function_def([yyparse], [int], b4_parse_param)[
+#endif]])[
+{]b4_pure_if([b4_declare_scanner_communication_variables
+])b4_push_if([b4_pure_if([], [[
+ int yypushed_char = yychar;
+ YYSTYPE yypushed_val = yylval;]b4_locations_if([[
+ YYLTYPE yypushed_loc = yylloc;]])
+])],
+ [b4_declare_parser_state_variables
+])b4_lac_if([[
+ int yy_lac_established = 0;]])[
+ int yyn;
int yyresult;
- /* Number of tokens to shift before error messages enabled. */
- int yyerrstatus;
- /* Look-ahead token as an internal (translated) token number. */
- int yytoken = 0;
-
- /* Three stacks and their tools:
- `yyss': related to states,
- `yyvs': related to semantic values,
- `yyls': related to locations.
-
- Refer to the stacks thru separate pointers, to allow yyoverflow
- to reallocate them elsewhere. */
-
- /* The state stack. */
- short int yyssa[YYINITDEPTH];
- short int *yyss = yyssa;
- register short int *yyssp;
+ /* Lookahead token as an internal (translated) token number. */
+ int yytoken;
+ /* The variables used to return semantic value and location from the
+ action routines. */
+ YYSTYPE yyval;]b4_locations_if([[
+ YYLTYPE yyloc;]])[
- /* The semantic value stack. */
- YYSTYPE yyvsa[YYINITDEPTH];
- YYSTYPE *yyvs = yyvsa;
- register YYSTYPE *yyvsp;
+#if YYERROR_VERBOSE
+ /* Buffer for error messages, and its allocated size. */
+ char yymsgbuf[128];
+ char *yymsg = yymsgbuf;
+ YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
+#endif
-]b4_location_if(
-[[ /* The location stack. */
- YYLTYPE yylsa[YYINITDEPTH];
- YYLTYPE *yyls = yylsa;
- YYLTYPE *yylsp;
- /* The locations where the error started and ended. */
- YYLTYPE yyerror_range[2];]])[
+#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
-#define YYPOPSTACK (yyvsp--, yyssp--]b4_location_if([, yylsp--])[)
+ /* The number of symbols on the RHS of the reduced rule.
+ Keep to zero when no symbol should be popped. */
+ int yylen = 0;]b4_push_if([[
- YYSIZE_T yystacksize = YYINITDEPTH;
+ if (!yyps->yynew)
+ {
+ yyn = yypact[yystate];
+ goto yyread_pushed_token;
+ }]])[
- /* The variables used to return semantic value and location from the
- action routines. */
- YYSTYPE yyval;
-]b4_location_if([ YYLTYPE yyloc;])[
+ yytoken = 0;
+ yyss = yyssa;
+ yyvs = yyvsa;]b4_locations_if([[
+ yyls = yylsa;]])[
+ yystacksize = YYINITDEPTH;]b4_lac_if([[
- /* When reducing, the number of symbols on the RHS of the reduced
- rule. */
- int yylen;
+ yyes = yyesa;
+ yyes_capacity = sizeof yyesa / sizeof *yyes;
+ if (YYMAXDEPTH < yyes_capacity)
+ yyes_capacity = YYMAXDEPTH;]])[
YYDPRINTF ((stderr, "Starting parse\n"));
yystate = 0;
yyerrstatus = 0;
yynerrs = 0;
- yychar = YYEMPTY; /* Cause a token to be read. */
+ yychar = YYEMPTY; /* Cause a token to be read. */
/* Initialize stack pointers.
Waste one element of value and location stack
so that they stay on the same level as the state stack.
The wasted elements are never initialized. */
-
yyssp = yyss;
- yyvsp = yyvs;
-]b4_location_if([[ yylsp = yyls;
-#if YYLTYPE_IS_TRIVIAL
+ yyvsp = yyvs;]b4_locations_if([[
+ yylsp = yyls;
+
+#if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
/* Initialize the default location before parsing starts. */
- yylloc.first_line = yylloc.last_line = 1;
- yylloc.first_column = yylloc.last_column = 0;
-#endif
-]])
-m4_ifdef([b4_initial_action], [
-m4_pushdef([b4_at_dollar], [yylloc])dnl
-m4_pushdef([b4_dollar_dollar], [yylval])dnl
- /* User initialization code. */
- b4_initial_action
+ yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
+ yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
+#endif]])
+m4_ifdef([b4_initial_action],[
+m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
+/* User initialization code. */
+b4_user_initial_action
m4_popdef([b4_dollar_dollar])dnl
-m4_popdef([b4_at_dollar])dnl
-/* Line __line__ of yacc.c. */
-b4_syncline([@oline@], [@ofile@])])dnl
-[
- yyvsp[0] = yylval;
-]b4_location_if([[ yylsp[0] = yylloc;
-]])
-[ goto yysetstate;
+m4_popdef([b4_at_dollar])])dnl
+m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
+]])dnl
+m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
+]])[
+ goto yysetstate;
/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate. |
`------------------------------------------------------------*/
yynewstate:
/* In all cases, when you get here, the value and location stacks
- have just been pushed. so pushing a state here evens the stacks.
- */
+ have just been pushed. So pushing a state here evens the stacks. */
yyssp++;
yysetstate:
#ifdef yyoverflow
{
- /* Give user a chance to reallocate the stack. Use copies of
+ /* Give user a chance to reallocate the stack. Use copies of
these so that the &'s don't force the real ones into
memory. */
YYSTYPE *yyvs1 = yyvs;
- short int *yyss1 = yyss;
-]b4_location_if([ YYLTYPE *yyls1 = yyls;])[
+ yytype_int16 *yyss1 = yyss;]b4_locations_if([
+ YYLTYPE *yyls1 = yyls;])[
/* Each stack pointer address is followed by the size of the
data in use in that stack, in bytes. This used to be a
conditional around just the two extra args, but that might
be undefined if yyoverflow is a macro. */
- yyoverflow ("parser stack overflow",
+ yyoverflow (YY_("memory exhausted"),
&yyss1, yysize * sizeof (*yyssp),
- &yyvs1, yysize * sizeof (*yyvsp),
-]b4_location_if([ &yyls1, yysize * sizeof (*yylsp),])[
+ &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
+ &yyls1, yysize * sizeof (*yylsp),])[
&yystacksize);
-]b4_location_if([ yyls = yyls1;])[
+]b4_locations_if([
+ yyls = yyls1;])[
yyss = yyss1;
yyvs = yyvs1;
}
#else /* no yyoverflow */
# ifndef YYSTACK_RELOCATE
- goto yyoverflowlab;
+ goto yyexhaustedlab;
# else
/* Extend the stack our own way. */
if (YYMAXDEPTH <= yystacksize)
- goto yyoverflowlab;
+ goto yyexhaustedlab;
yystacksize *= 2;
if (YYMAXDEPTH < yystacksize)
yystacksize = YYMAXDEPTH;
{
- short int *yyss1 = yyss;
+ yytype_int16 *yyss1 = yyss;
union yyalloc *yyptr =
(union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
if (! yyptr)
- goto yyoverflowlab;
- YYSTACK_RELOCATE (yyss);
- YYSTACK_RELOCATE (yyvs);
-]b4_location_if([ YYSTACK_RELOCATE (yyls);])[
+ goto yyexhaustedlab;
+ YYSTACK_RELOCATE (yyss_alloc, yyss);
+ YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
+ YYSTACK_RELOCATE (yyls_alloc, yyls);])[
# undef YYSTACK_RELOCATE
if (yyss1 != yyssa)
YYSTACK_FREE (yyss1);
#endif /* no yyoverflow */
yyssp = yyss + yysize - 1;
- yyvsp = yyvs + yysize - 1;
-]b4_location_if([ yylsp = yyls + yysize - 1;])[
+ yyvsp = yyvs + yysize - 1;]b4_locations_if([
+ yylsp = yyls + yysize - 1;])[
YYDPRINTF ((stderr, "Stack size increased to %lu\n",
(unsigned long int) yystacksize));
YYDPRINTF ((stderr, "Entering state %d\n", yystate));
+ if (yystate == YYFINAL)
+ YYACCEPT;
+
goto yybackup;
/*-----------.
`-----------*/
yybackup:
-/* Do appropriate processing given the current state. */
-/* Read a look-ahead token if we need one and don't already have one. */
-/* yyresume: */
-
- /* First try to decide what to do without reference to look-ahead token. */
+ /* Do appropriate processing given the current state. Read a
+ lookahead token if we need one and don't already have one. */
+ /* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate];
- if (yyn == YYPACT_NINF)
+ if (yypact_value_is_default (yyn))
goto yydefault;
- /* Not known => get a look-ahead token if don't already have one. */
+ /* Not known => get a lookahead token if don't already have one. */
- /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */
+ /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
if (yychar == YYEMPTY)
- {
- YYDPRINTF ((stderr, "Reading a token: "));
- yychar = YYLEX;
+ {]b4_push_if([[
+ if (!yyps->yynew)
+ {]b4_use_push_for_pull_if([], [[
+ YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
+ yyresult = YYPUSH_MORE;
+ goto yypushreturn;
+ }
+ yyps->yynew = 0;]b4_pure_if([], [[
+ /* Restoring the pushed token is only necessary for the first
+ yypush_parse invocation since subsequent invocations don't overwrite
+ it before jumping to yyread_pushed_token. */
+ yychar = yypushed_char;
+ yylval = yypushed_val;]b4_locations_if([[
+ yylloc = yypushed_loc;]])])[
+yyread_pushed_token:]])[
+ YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
+ yychar = yypushed_char;
+ if (yypushed_val)
+ yylval = *yypushed_val;]b4_locations_if([[
+ if (yypushed_loc)
+ yylloc = *yypushed_loc;]])])], [[
+ yychar = YYLEX;]])[
}
if (yychar <= YYEOF)
/* If the proper action on seeing token YYTOKEN is to reduce or to
detect an error, take that action. */
yyn += yytoken;
- if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
- goto yydefault;
+ if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)]b4_lac_if([[
+ {
+ YY_LAC_ESTABLISH;
+ goto yydefault;
+ }]], [[
+ goto yydefault;]])[
yyn = yytable[yyn];
if (yyn <= 0)
{
- if (yyn == 0 || yyn == YYTABLE_NINF)
- goto yyerrlab;
+ if (yytable_value_is_error (yyn))
+ goto yyerrlab;]b4_lac_if([[
+ YY_LAC_ESTABLISH;]])[
yyn = -yyn;
goto yyreduce;
}
- if (yyn == YYFINAL)
- YYACCEPT;
-
- /* Shift the look-ahead token. */
- YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != YYEOF)
- yychar = YYEMPTY;
-
- *++yyvsp = yylval;
-]b4_location_if([ *++yylsp = yylloc;])[
-
/* Count tokens shifted since error; after three, turn off error
status. */
if (yyerrstatus)
yyerrstatus--;
+ /* Shift the lookahead token. */
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+ /* Discard the shifted token. */
+ yychar = YYEMPTY;]b4_lac_if([[
+ YY_LAC_DISCARD ("shift");]])[
+
yystate = yyn;
+ *++yyvsp = yylval;
+]b4_locations_if([ *++yylsp = yylloc;])[
goto yynewstate;
GCC warning that YYVAL may be used uninitialized. */
yyval = yyvsp[1-yylen];
-]b4_location_if(
-[[ /* Default location. */
- YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);]])[
- YY_REDUCE_PRINT (yyn);
+]b4_locations_if(
+[[ /* Default location. */
+ YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
+ YY_REDUCE_PRINT (yyn);]b4_lac_if([[
+ {
+ int yychar_backup = yychar;
+ switch (yyn)
+ {
+ ]b4_user_actions[
+ default: break;
+ }
+ if (yychar_backup != yychar)
+ YY_LAC_DISCARD ("yychar change");
+ }]], [[
switch (yyn)
- ]{
- b4_actions
- }
-
-/* Line __line__ of yacc.c. */
-b4_syncline([@oline@], [@ofile@])
-\f
-[ yyvsp -= yylen;
- yyssp -= yylen;
-]b4_location_if([ yylsp -= yylen;])[
-
+ {
+ ]b4_user_actions[
+ default: break;
+ }]])[
+ /* User semantic actions sometimes alter yychar, and that requires
+ that yytoken be updated with the new translation. We take the
+ approach of translating immediately before every use of yytoken.
+ One alternative is translating here after every semantic action,
+ but that translation would be missed if the semantic action invokes
+ YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
+ if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
+ incorrect destructor might then be invoked immediately. In the
+ case of YYERROR or YYBACKUP, subsequent parser actions might lead
+ to an incorrect destructor call or verbose syntax error message
+ before the lookahead is translated. */
+ YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
+
+ YYPOPSTACK (yylen);
+ yylen = 0;
YY_STACK_PRINT (yyss, yyssp);
- *++yyvsp = yyval;
-]b4_location_if([ *++yylsp = yyloc;])[
+ *++yyvsp = yyval;]b4_locations_if([
+ *++yylsp = yyloc;])[
/* Now `shift' the result of the reduction. Determine what state
that goes to, based on the state we popped back to and the rule
| yyerrlab -- here on detecting error |
`------------------------------------*/
yyerrlab:
+ /* Make sure we have latest lookahead translation. See comments at
+ user semantic actions for why this is necessary. */
+ yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
+
/* If not already recovering from an error, report this error. */
if (!yyerrstatus)
{
++yynerrs;
-#if YYERROR_VERBOSE
- yyn = yypact[yystate];
-
- if (YYPACT_NINF < yyn && yyn < YYLAST)
- {
- YYSIZE_T yysize = 0;
- int yytype = YYTRANSLATE (yychar);
- const char* yyprefix;
- char *yymsg;
- int yyx;
-
- /* Start YYX at -YYN if negative to avoid negative indexes in
- YYCHECK. */
- int yyxbegin = yyn < 0 ? -yyn : 0;
-
- /* Stay within bounds of both yycheck and yytname. */
- int yychecklim = YYLAST - yyn;
- int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
- int yycount = 0;
-
- yyprefix = ", expecting ";
- for (yyx = yyxbegin; yyx < yyxend; ++yyx)
- if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
- {
- yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
- yycount += 1;
- if (yycount == 5)
- {
- yysize = 0;
- break;
- }
- }
- yysize += (sizeof ("syntax error, unexpected ")
- + yystrlen (yytname[yytype]));
- yymsg = (char *) YYSTACK_ALLOC (yysize);
- if (yymsg != 0)
- {
- char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
- yyp = yystpcpy (yyp, yytname[yytype]);
-
- if (yycount < 5)
- {
- yyprefix = ", expecting ";
- for (yyx = yyxbegin; yyx < yyxend; ++yyx)
- if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
- {
- yyp = yystpcpy (yyp, yyprefix);
- yyp = yystpcpy (yyp, yytname[yyx]);
- yyprefix = " or ";
- }
- }
- yyerror (]b4_yyerror_args[yymsg);
- YYSTACK_FREE (yymsg);
- }
- else
- yyerror (]b4_yyerror_args["syntax error; also virtual memory exhausted");
- }
- else
-#endif /* YYERROR_VERBOSE */
- yyerror (]b4_yyerror_args["syntax error");
+#if ! YYERROR_VERBOSE
+ yyerror (]b4_yyerror_args[YY_("syntax error"));
+#else
+# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \]b4_lac_if([[
+ yyesa, &yyes, &yyes_capacity, \]])[
+ yyssp, yytoken)
+ {
+ char const *yymsgp = YY_("syntax error");
+ int yysyntax_error_status;]b4_lac_if([[
+ if (yychar != YYEMPTY)
+ YY_LAC_ESTABLISH;]])[
+ yysyntax_error_status = YYSYNTAX_ERROR;
+ if (yysyntax_error_status == 0)
+ yymsgp = yymsg;
+ else if (yysyntax_error_status == 1)
+ {
+ if (yymsg != yymsgbuf)
+ YYSTACK_FREE (yymsg);
+ yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
+ if (!yymsg)
+ {
+ yymsg = yymsgbuf;
+ yymsg_alloc = sizeof yymsgbuf;
+ yysyntax_error_status = 2;
+ }
+ else
+ {
+ yysyntax_error_status = YYSYNTAX_ERROR;
+ yymsgp = yymsg;
+ }
+ }
+ yyerror (]b4_yyerror_args[yymsgp);
+ if (yysyntax_error_status == 2)
+ goto yyexhaustedlab;
+ }
+# undef YYSYNTAX_ERROR
+#endif
}
-]b4_location_if([[ yyerror_range[0] = yylloc;]])[
+]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
if (yyerrstatus == 3)
{
- /* If just tried and failed to reuse look-ahead token after an
+ /* If just tried and failed to reuse lookahead token after an
error, discard it. */
if (yychar <= YYEOF)
- {
- /* If at end of input, pop the error token,
- then the rest of the stack, then return failure. */
+ {
+ /* Return failure if at end of input. */
if (yychar == YYEOF)
- for (;;)
- {
-]b4_location_if([[ yyerror_range[0] = *yylsp;]])[
- YYPOPSTACK;
- if (yyssp == yyss)
- YYABORT;
- yydestruct ("Error: popping",
- yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
- }
- }
+ YYABORT;
+ }
else
{
- yydestruct ("Error: discarding", yytoken, &yylval]b4_location_if([, &yylloc])[);
+ yydestruct ("Error: discarding",
+ yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
yychar = YYEMPTY;
}
}
- /* Else will try to reuse look-ahead token after shifting the error
+ /* Else will try to reuse lookahead token after shifting the error
token. */
goto yyerrlab1;
`---------------------------------------------------*/
yyerrorlab:
-#ifdef __GNUC__
- /* Pacify GCC when the user code never invokes YYERROR and the label
- yyerrorlab therefore never appears in user code. */
- if (0)
+ /* Pacify compilers like GCC when the user code never invokes
+ YYERROR and the label yyerrorlab therefore never appears in user
+ code. */
+ if (/*CONSTCOND*/ 0)
goto yyerrorlab;
-#endif
-]b4_location_if([[ yyerror_range[0] = yylsp[1-yylen];
- yylsp -= yylen;
- ]])[yyvsp -= yylen;
- yyssp -= yylen;
+]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
+]])[ /* Do not reclaim the symbols of the rule which action triggered
+ this YYERROR. */
+ YYPOPSTACK (yylen);
+ yylen = 0;
+ YY_STACK_PRINT (yyss, yyssp);
yystate = *yyssp;
goto yyerrlab1;
for (;;)
{
yyn = yypact[yystate];
- if (yyn != YYPACT_NINF)
+ if (!yypact_value_is_default (yyn))
{
yyn += YYTERROR;
if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
if (yyssp == yyss)
YYABORT;
-]b4_location_if([[ yyerror_range[0] = *yylsp;]])[
- yydestruct ("Error: popping", yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
- YYPOPSTACK;
+]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
+ yydestruct ("Error: popping",
+ yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
+ YYPOPSTACK (1);
yystate = *yyssp;
YY_STACK_PRINT (yyss, yyssp);
- }
+ }]b4_lac_if([[
- if (yyn == YYFINAL)
- YYACCEPT;
+ /* If the stack popping above didn't lose the initial context for the
+ current lookahead token, the shift below will for sure. */
+ YY_LAC_DISCARD ("error recovery");]])[
*++yyvsp = yylval;
-]b4_location_if([[
- yyerror_range[1] = yylloc;
+]b4_locations_if([[
+ yyerror_range[2] = yylloc;
/* Using YYLLOC is tempting, but would change the location of
- the look-ahead. YYLOC is available though. */
- YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2);
+ the lookahead. YYLOC is available though. */
+ YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
*++yylsp = yyloc;]])[
- /* Shift the error token. */
+ /* Shift the error token. */
YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
yystate = yyn;
| yyabortlab -- YYABORT comes here. |
`-----------------------------------*/
yyabortlab:
- yydestruct ("Error: discarding lookahead",
- yytoken, &yylval]b4_location_if([, &yylloc])[);
- yychar = YYEMPTY;
yyresult = 1;
goto yyreturn;
-#ifndef yyoverflow
-/*----------------------------------------------.
-| yyoverflowlab -- parser overflow comes here. |
-`----------------------------------------------*/
-yyoverflowlab:
- yyerror (]b4_yyerror_args["parser stack overflow");
+#if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[
+/*-------------------------------------------------.
+| yyexhaustedlab -- memory exhaustion comes here. |
+`-------------------------------------------------*/
+yyexhaustedlab:
+ yyerror (]b4_yyerror_args[YY_("memory exhausted"));
yyresult = 2;
/* Fall through. */
#endif
yyreturn:
+ if (yychar != YYEMPTY)
+ {
+ /* Make sure we have latest lookahead translation. See comments at
+ user semantic actions for why this is necessary. */
+ yytoken = YYTRANSLATE (yychar);
+ yydestruct ("Cleanup: discarding lookahead",
+ yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
+ }
+ /* Do not reclaim the symbols of the rule which action triggered
+ this YYABORT or YYACCEPT. */
+ YYPOPSTACK (yylen);
+ YY_STACK_PRINT (yyss, yyssp);
+ while (yyssp != yyss)
+ {
+ yydestruct ("Cleanup: popping",
+ yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
+ YYPOPSTACK (1);
+ }
#ifndef yyoverflow
if (yyss != yyssa)
YYSTACK_FREE (yyss);
+#endif]b4_lac_if([[
+ if (yyes != yyesa)
+ YYSTACK_FREE (yyes);]])b4_push_if([[
+ yyps->yynew = 1;
+
+yypushreturn:]])[
+#if YYERROR_VERBOSE
+ if (yymsg != yymsgbuf)
+ YYSTACK_FREE (yymsg);
#endif
- return yyresult;
-]}
-
-
-b4_epilogue
-m4_if(b4_defines_flag, 0, [],
-[@output @output_header_name@
-b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
- [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])
-
-/* As a special exception, when this file is copied by Bison into a
- Bison output file, you may use that output file without restriction.
- This special exception was added by the Free Software Foundation
- in version 1.24 of Bison. */
-
-b4_token_defines(b4_tokens)
-
-#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
-m4_ifdef([b4_stype],
-[b4_syncline([b4_stype_line], [b4_filename])
-typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE;
-/* Line __line__ of yacc.c. */
-b4_syncline([@oline@], [@ofile@])],
-[typedef int YYSTYPE;])
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
-#endif
+ /* Make sure YYID is used. */
+ return YYID (yyresult);
+}
-b4_pure_if([],
-[extern YYSTYPE b4_prefix[]lval;])
-b4_location_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_epilogue
+b4_defines_if(
+[@output(b4_spec_defines_file@)@
+b4_copyright([Bison interface for Yacc-like parsers in C],
+ [1984, 1989-1990, 2000-2012])[
-m4_if(b4_pure, [0],
-[extern YYLTYPE b4_prefix[]lloc;])
-])
-])
+]b4_shared_declarations[
+]])dnl b4_defines_if
+m4_divert_pop(0)
projects / bison.git / blobdiff