-m4_divert(-1) -*- C -*-
+ -*- C -*-
# GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# Copyright (C) 2002-2012 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., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+m4_include(b4_pkgdatadir/[c.m4])
## ---------------- ##
## Default values. ##
## Pure/impure interfaces. ##
## ------------------------ ##
+b4_define_flag_if([pure])
+# If glr.cc is including this file and thus has already set b4_pure_flag,
+# do not change the value of b4_pure_flag, and do not record a use of api.pure.
+m4_ifndef([b4_pure_flag],
+[b4_percent_define_default([[api.pure]], [[false]])
+ m4_define([b4_pure_flag],
+ [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])])
+
+# b4_user_formals
+# ---------------
+# The possible parse-params formal arguments preceded by a comma.
+#
+# This is not shared with yacc.c in c.m4 because GLR relies on ISO C
+# formal argument declarations.
+m4_define([b4_user_formals],
+[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])])
+
# b4_lex_param
# ------------
# Accumule in b4_lex_param all the yylex arguments.
# Yes, this is quite ugly...
m4_define([b4_lex_param],
-m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[yylvalp]]][]dnl
-b4_location_if([, [[YYLTYPE *], [yyllocp]]])])dnl
+m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
+b4_locations_if([, [[YYLTYPE *], [&yylloc]]])])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param)))
-# b4_user_formals
-# ---------------
-m4_define([b4_user_formals],
-[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])])
-
-
# b4_yyerror_args
# ---------------
-# Arguments passed to yyerror: user args plus yylloc.
+# Optional effective arguments passed to yyerror: user args plus yylloc, and
+# a trailing comma.
m4_define([b4_yyerror_args],
-[b4_pure_if([b4_location_if([yylocp, ])])dnl
+[b4_pure_if([b4_locations_if([yylocp, ])])dnl
m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
# b4_lyyerror_args
# ----------------
-# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
+# Same as above, but on the lookahead, hence &yylloc instead of yylocp.
m4_define([b4_lyyerror_args],
-[b4_pure_if([b4_location_if([yyllocp, ])])dnl
+[b4_pure_if([b4_locations_if([&yylloc, ])])dnl
m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
# b4_pure_args
# ------------
-# Arguments needed by yyerror: user args plus yylloc.
+# Same as b4_yyerror_args, but with a leading comma.
m4_define([b4_pure_args],
-[b4_pure_if([b4_location_if([, yylocp])])[]b4_user_args])
+[b4_pure_if([b4_locations_if([, yylocp])])[]b4_user_args])
+
+
+# b4_lpure_args
+# -------------
+# Same as above, but on the lookahead, hence &yylloc instead of yylocp.
+m4_define([b4_lpure_args],
+[b4_pure_if([b4_locations_if([, &yylloc])])[]b4_user_args])
+
# b4_pure_formals
# ---------------
-# Arguments passed to yyerror: user formals plus yyllocp.
+# Arguments passed to yyerror: user formals plus yylocp with leading comma.
m4_define([b4_pure_formals],
-[b4_pure_if([b4_location_if([, YYLTYPE *yylocp])])[]b4_user_formals])
+[b4_pure_if([b4_locations_if([, YYLTYPE *yylocp])])[]b4_user_formals])
-# b4_lpure_args
-# -------------
-# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
-m4_define([b4_lpure_args],
-[b4_pure_if([b4_location_if([, yyllocp])])[]b4_user_args])
+# b4_locuser_formals(LOC = yylocp)
+# --------------------------------
+m4_define([b4_locuser_formals],
+[b4_locations_if([, YYLTYPE *m4_default([$1], [yylocp])])[]b4_user_formals])
-# b4_lpure_formals
-# ----------------
-# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
-m4_define([b4_lpure_formals],
-[b4_pure_if([b4_location_if([YYLTYPE *yyllocp])])[]b4_user_formals])
+# b4_locuser_args(LOC = yylocp)
+# -----------------------------
+m4_define([b4_locuser_args],
+[b4_locations_if([, m4_default([$1], [yylocp])])[]b4_user_args])
+
## ----------------- ##
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
-[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])
+[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
-[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yyloc)])
+[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yyloc)])
+
+
+## -------------- ##
+## Declarations. ##
+## -------------- ##
+
+# 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_percent_code_get([[requires]])[]dnl
+
+b4_token_enums(b4_tokens)
+
+[#ifndef YYSTYPE
+]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]])])[
+#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_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1
+#endif
+]])[
+]b4_percent_code_get([[provides]])[]dnl
+])
+
+
+## -------------- ##
+## 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 GLR parsing with Bison],
- [2002, 2003, 2004, 2005])
+m4_divert_push(0)dnl
+@output(b4_parser_file_name@)@
+b4_copyright([Skeleton implementation for Bison GLR parsers in C],
+ [2002-2012])
[
-/* This is the parser code for GLR (Generalized LR) parser. */
+/* C GLR parser skeleton written by Paul Hilfinger. */
]b4_identification
-m4_if(b4_prefix[], [yy], [],
+
+b4_percent_code_get([[top]])[]dnl
+m4_if(b4_prefix, [yy], [],
[/* Substitute the variable and function names. */
#define yyparse b4_prefix[]parse
#define yylex b4_prefix[]lex
#define yychar b4_prefix[]char
#define yydebug b4_prefix[]debug
#define yynerrs b4_prefix[]nerrs
-#define yylloc b4_prefix[]lloc])
-
-b4_token_defines(b4_tokens)
+#define yylloc b4_prefix[]lloc])[
/* Copy the first part of user declarations. */
-b4_pre_prologue[
+]b4_user_pre_prologue[
+
+]b4_null_define[
+
+]b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
+ [b4_shared_declarations])[
/* Enabling traces. */
#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug[
+# define YYDEBUG ]b4_debug_flag[
#endif
/* Enabling verbose error messages. */
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
-# define YYERROR_VERBOSE ]b4_error_verbose[
+# define YYERROR_VERBOSE ]b4_error_verbose_flag[
#endif
/* Enabling the token table. */
# define YYTOKEN_TABLE ]b4_token_table[
#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 glr.c. */
-b4_syncline([@oline@], [@ofile@])],
-[typedef int YYSTYPE;])[
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
-#endif
-
-#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
-typedef struct YYLTYPE
-{
-]b4_location_if([
- int first_line;
- int first_column;
- int last_line;
- int last_column;
-],[
- char yydummy;
-])[
-} YYLTYPE;
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif
-
/* Default (constant) value used for initialization for null
right-hand sides. Unlike the standard yacc.c template,
here we set the default value of $$ to a zeroed-out value.
Since the default value is undefined, this behavior is
- technically correct. */
+ technically correct. */
static YYSTYPE yyval_default;
/* Copy the second part of user declarations. */
-]b4_post_prologue[
+]b4_user_post_prologue
+b4_percent_code_get[]dnl
-]/* Line __line__ of glr.c. */
-b4_syncline([@oline@], [@ofile@])
-[
-#include <stdio.h>
+[#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <stdarg.h>
-#include <setjmp.h>
#ifndef YY_
-# if YYENABLE_NLS
+# 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
+/* Suppress unused-variable warnings by "using" E. */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(e) ((void) (e))
+#else
+# define YYUSE(e) /* empty */
+#endif
+
+/* Identity function, used to suppress warnings about constant conditions. */
+#ifndef lint
+# define YYID(n) (n)
+#else
+]b4_c_function_def([YYID], [static int], [[int i], [i]])[
+{
+ return i;
+}
+#endif
+
#ifndef YYFREE
# define YYFREE free
#endif
#define yytrue 1
#define yyfalse 0
+#ifndef YYSETJMP
+# include <setjmp.h>
+# define YYJMP_BUF jmp_buf
+# define YYSETJMP(env) setjmp (env)
+# define YYLONGJMP(env, val) longjmp (env, val)
+#endif
+
/*-----------------.
| GCC extensions. |
`-----------------*/
#ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later. */
-# if (!defined (__GNUC__) || __GNUC__ < 2 \
- || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+ || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
# define __attribute__(Spec) /* empty */
# endif
#endif
-]b4_location_if([#define YYOPTIONAL_LOC(Name) Name],[
+]b4_locations_if([#define YYOPTIONAL_LOC(Name) Name],[
#ifdef __cplusplus
# define YYOPTIONAL_LOC(Name) /* empty */
#else
# define YYASSERT(condition) ((void) ((condition) || (abort (), 0)))
#endif
-/* 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[
-/* YYMAXRHS -- Maximum number of symbols on right-hand side of rule. */
+/* YYMAXRHS -- Maximum number of symbols on right-hand side of rule. */
#define YYMAXRHS ]b4_r2_max[
/* YYMAXLEFT -- Maximum number of symbols to the left of a handle
- accessed by $0, $-1, etc., in any rule. */
+ accessed by $0, $-1, etc., in any rule. */
#define YYMAXLEFT ]b4_max_left_semantic_context[
/* YYTRANSLATE(X) -- Bison symbol number corresponding to X. */
#define YYUNDEFTOK ]b4_undef_token_number[
#define YYMAXUTOK ]b4_user_token_number_max[
-#define YYTRANSLATE(YYX) \
- ((YYX <= 0) ? YYEOF : \
- (unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+#define YYTRANSLATE(YYX) \
+ ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
]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[
#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
- First, the terminals, then, starting at YYNTOKENS, nonterminals. */
+ First, the terminals, then, starting at YYNTOKENS, nonterminals. */
static const char *const yytname[] =
{
]b4_tname[
]b4_r2[
};
-/* YYDPREC[RULE-NUM] -- Dynamic precedence of rule #RULE-NUM (0 if none). */
+/* YYDPREC[RULE-NUM] -- Dynamic precedence of rule #RULE-NUM (0 if none). */
static const ]b4_int_type_for([b4_dprec])[ yydprec[] =
{
]b4_dprec[
};
-/* YYMERGER[RULE-NUM] -- Index of merging function for rule #RULE-NUM. */
+/* YYMERGER[RULE-NUM] -- Index of merging function for rule #RULE-NUM. */
static const ]b4_int_type_for([b4_merger])[ yymerger[] =
{
]b4_merger[
};
-/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
- doesn't specify something else to do. Zero means the default is an
- error. */
+/* YYDEFACT[S] -- default reduction number in state S. 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[
};
-/* YYPDEFGOTO[NTERM-NUM]. */
+/* YYPDEFGOTO[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[] =
{
If N is 0, then set CURRENT to the empty location which ends
the previous symbol: RHS[0] (always defined). */
-]b4_location_if([[
+]b4_locations_if([[
#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc)
#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)
+# define YYLLOC_DEFAULT(Current, Rhs, N) \
+ do \
+ if (YYID (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 (YYID (0))
/* YY_LOCATION_PRINT -- Print the location on the stream.
This macro was not mandated originally: define only if we know
we won't break user code: when these are the locations we know. */
-# define YY_LOCATION_PRINT(File, Loc) \
- fprintf (File, "%d.%d-%d.%d", \
- (Loc).first_line, (Loc).first_column, \
+# define YY_LOCATION_PRINT(File, Loc) \
+ fprintf (File, "%d.%d-%d.%d", \
+ (Loc).first_line, (Loc).first_column, \
(Loc).last_line, (Loc).last_column)
#endif
]],[
]b4_pure_if(
[
#undef yynerrs
-#define yynerrs (yystack->yyerrcnt)
+#define yynerrs (yystackp->yyerrcnt)
#undef yychar
-#define yychar (yystack->yyrawchar)],
-[YYSTYPE yylval;
-
-YYLTYPE yylloc;
+#define yychar (yystackp->yyrawchar)
+#undef yylval
+#define yylval (yystackp->yyval)
+#undef yylloc
+#define yylloc (yystackp->yyloc)
+m4_if(b4_prefix[], [yy], [],
+[#define b4_prefix[]nerrs yynerrs
+#define b4_prefix[]char yychar
+#define b4_prefix[]lval yylval
+#define b4_prefix[]lloc yylloc])],
+[YYSTYPE yylval;]b4_locations_if([[
+YYLTYPE yylloc;]])[
int yynerrs;
int yychar;])[
typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG;
-#define YYCHK(YYE) \
- do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; } \
- while (0)
+#define YYCHK(YYE) \
+ do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; } \
+ while (YYID (0))
#if YYDEBUG
-#if ! defined (YYFPRINTF)
+# ifndef YYFPRINTF
# define YYFPRINTF fprintf
-#endif
+# endif
+
+# define YYDPRINTF(Args) \
+do { \
+ if (yydebug) \
+ YYFPRINTF Args; \
+} while (YYID (0))
-# define YYDPRINTF(Args) \
-do { \
- if (yydebug) \
- YYFPRINTF Args; \
-} while (0)
-
-]b4_yysymprint_generate([b4_c_ansi_function_def])[
-
-# 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)
+]b4_yy_symbol_print_generate([b4_c_ansi_function_def])[
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
+do { \
+ if (yydebug) \
+ { \
+ YYFPRINTF (stderr, "%s ", Title); \
+ yy_symbol_print (stderr, Type, Value]b4_locuser_args([Location])[); \
+ YYFPRINTF (stderr, "\n"); \
+ } \
+} while (YYID (0))
/* Nonzero means print parse trace. It is left uninitialized so that
multiple parsers can coexist. */
#endif /* !YYDEBUG */
/* YYINITDEPTH -- initial size of the parser's stacks. */
-#ifndef YYINITDEPTH
+#ifndef YYINITDEPTH
# define YYINITDEPTH ]b4_stack_depth_init[
#endif
allocation. This is to allow allocation and initialization
to be completed by functions that call yyexpandGLRStack before the
stack is expanded, thus insuring that all necessary pointers get
- properly redirected to new data. */
+ properly redirected to new data. */
#define YYHEADROOM 2
#ifndef YYSTACKEXPANDABLE
-# if (! defined (__cplusplus) \
- || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
- && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL))
+# if (! defined __cplusplus \
+ || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
+ && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))
# define YYSTACKEXPANDABLE 1
# else
# define YYSTACKEXPANDABLE 0
# endif
#endif
+#if YYSTACKEXPANDABLE
+# define YY_RESERVE_GLRSTACK(Yystack) \
+ do { \
+ if (Yystack->yyspaceLeft < YYHEADROOM) \
+ yyexpandGLRStack (Yystack); \
+ } while (YYID (0))
+#else
+# define YY_RESERVE_GLRSTACK(Yystack) \
+ do { \
+ if (Yystack->yyspaceLeft < YYHEADROOM) \
+ yyMemoryExhausted (Yystack); \
+ } while (YYID (0))
+#endif
+
+
#if YYERROR_VERBOSE
# 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
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;
- }
+ 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: ;
}
typedef short int yyItemNum;
typedef struct yyGLRState yyGLRState;
+typedef struct yyGLRStateSet yyGLRStateSet;
typedef struct yySemanticOption yySemanticOption;
typedef union yyGLRStackItem yyGLRStackItem;
typedef struct yyGLRStack yyGLRStack;
-typedef struct yyGLRStateSet yyGLRStateSet;
struct yyGLRState {
- /** Type tag: always true. */
+ /** Type tag: always true. */
yybool yyisState;
- /** Type tag for yysemantics. If true, yysval applies, otherwise
- * yyfirstVal applies. */
+ /** Type tag for yysemantics. If true, yysval applies, otherwise
+ * yyfirstVal applies. */
yybool yyresolved;
- /** Number of corresponding LALR(1) machine state. */
+ /** Number of corresponding LALR(1) machine state. */
yyStateNum yylrState;
/** Preceding state in this stack */
yyGLRState* yypred;
union {
/** First in a chain of alternative reductions producing the
* non-terminal corresponding to this state, threaded through
- * yynext. */
+ * yynext. */
yySemanticOption* yyfirstVal;
- /** Semantic value for this state. */
+ /** Semantic value for this state. */
YYSTYPE yysval;
- } yysemantics;
- /** Source location for this state. */
- YYLTYPE yyloc;
+ } yysemantics;]b4_locations_if([[
+ /** Source location for this state. */
+ YYLTYPE yyloc;]])[
};
struct yyGLRStateSet {
yyGLRState** yystates;
+ /** During nondeterministic operation, yylookaheadNeeds tracks which
+ * stacks have actually needed the current lookahead. During deterministic
+ * operation, yylookaheadNeeds[0] is not maintained since it would merely
+ * duplicate yychar != YYEMPTY. */
+ yybool* yylookaheadNeeds;
size_t yysize, yycapacity;
};
struct yySemanticOption {
- /** Type tag: always false. */
+ /** Type tag: always false. */
yybool yyisState;
/** Rule number for this reduction */
yyRuleNum yyrule;
- /** The last RHS state in the list of states to be reduced. */
+ /** The last RHS state in the list of states to be reduced. */
yyGLRState* yystate;
- /** Next sibling in chain of options. To facilitate merging,
- * options are chained in decreasing order by address. */
+ /** The lookahead for this reduction. */
+ int yyrawchar;
+ YYSTYPE yyval;]b4_locations_if([[
+ YYLTYPE yyloc;]])[
+ /** Next sibling in chain of options. To facilitate merging,
+ * options are chained in decreasing order by address. */
yySemanticOption* yynext;
};
-/** Type of the items in the GLR stack. The yyisState field
- * indicates which item of the union is valid. */
+/** Type of the items in the GLR stack. The yyisState field
+ * indicates which item of the union is valid. */
union yyGLRStackItem {
yyGLRState yystate;
yySemanticOption yyoption;
struct yyGLRStack {
int yyerrState;
-]b4_location_if([[ /* To compute the location of the error token. */
+]b4_locations_if([[ /* To compute the location of the error token. */
yyGLRStackItem yyerror_range[3];]])[
]b4_pure_if(
[
int yyerrcnt;
int yyrawchar;
+ YYSTYPE yyval;]b4_locations_if([[
+ YYLTYPE yyloc;]])[
])[
- yySymbol* yytokenp;
- jmp_buf yyexception_buffer;
+ YYJMP_BUF yyexception_buffer;
yyGLRStackItem* yyitems;
yyGLRStackItem* yynextFree;
size_t yyspaceLeft;
yyGLRStateSet yytops;
};
-static void yyexpandGLRStack (yyGLRStack* yystack);
+#if YYSTACKEXPANDABLE
+static void yyexpandGLRStack (yyGLRStack* yystackp);
+#endif
-static void yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg)
+static void yyFail (yyGLRStack* yystackp]b4_pure_formals[, const char* yymsg)
__attribute__ ((__noreturn__));
static void
-yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg)
+yyFail (yyGLRStack* yystackp]b4_pure_formals[, const char* yymsg)
{
- if (yymsg != NULL)
+ if (yymsg != YY_NULL)
yyerror (]b4_yyerror_args[yymsg);
- longjmp (yystack->yyexception_buffer, 1);
+ YYLONGJMP (yystackp->yyexception_buffer, 1);
}
-static void yyMemoryExhausted (yyGLRStack* yystack)
+static void yyMemoryExhausted (yyGLRStack* yystackp)
__attribute__ ((__noreturn__));
static void
-yyMemoryExhausted (yyGLRStack* yystack)
+yyMemoryExhausted (yyGLRStack* yystackp)
{
- longjmp (yystack->yyexception_buffer, 2);
+ YYLONGJMP (yystackp->yyexception_buffer, 2);
}
#if YYDEBUG || YYERROR_VERBOSE
/** Fill in YYVSP[YYLOW1 .. YYLOW0-1] from the chain of states starting
* at YYVSP[YYLOW0].yystate.yypred. Leaves YYVSP[YYLOW1].yystate.yypred
- * containing the pointer to the next state in the chain. Assumes
- * YYLOW1 < YYLOW0. */
+ * containing the pointer to the next state in the chain. */
static void yyfillin (yyGLRStackItem *, int, int) __attribute__ ((__unused__));
static void
yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1)
{
- yyGLRState* s;
int i;
- s = yyvsp[yylow0].yystate.yypred;
+ yyGLRState *s = yyvsp[yylow0].yystate.yypred;
for (i = yylow0-1; i >= yylow1; i -= 1)
{
YYASSERT (s->yyresolved);
yyvsp[i].yystate.yyresolved = yytrue;
- yyvsp[i].yystate.yysemantics.yysval = s->yysemantics.yysval;
- yyvsp[i].yystate.yyloc = s->yyloc;
+ yyvsp[i].yystate.yysemantics.yysval = s->yysemantics.yysval;]b4_locations_if([[
+ yyvsp[i].yystate.yyloc = s->yyloc;]])[
s = yyvsp[i].yystate.yypred = s->yypred;
}
}
/* Do nothing if YYNORMAL or if *YYLOW <= YYLOW1. Otherwise, fill in
- YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1.
- For convenience, always return YYLOW1. */
+ * YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1.
+ * For convenience, always return YYLOW1. */
static inline int yyfill (yyGLRStackItem *, int *, int, yybool)
__attribute__ ((__unused__));
static inline int
/** Perform user action for rule number YYN, with RHS length YYRHSLEN,
* and top stack item YYVSP. YYLVALP points to place to put semantic
* value ($$), and yylocp points to place for location information
- * (@@$). Returns yyok for normal return, yyaccept for YYACCEPT,
- * yyerr for YYERROR, yyabort for YYABORT. */
-static YYRESULTTAG
+ * (@@$). Returns yyok for normal return, yyaccept for YYACCEPT,
+ * yyerr for YYERROR, yyabort for YYABORT. */
+/*ARGSUSED*/ static YYRESULTTAG
yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
- YYSTYPE* yyvalp,
- YYLTYPE* YYOPTIONAL_LOC (yylocp),
- yyGLRStack* yystack
- ]b4_user_formals[)
+ yyGLRStack* yystackp,
+ YYSTYPE* yyvalp]b4_locuser_formals[)
{
yybool yynormal __attribute__ ((__unused__)) =
- (yystack->yysplitPoint == NULL);
+ (yystackp->yysplitPoint == YY_NULL);
int yylow;
-
-# undef yyerrok
-# define yyerrok (yystack->yyerrState = 0)
+]b4_parse_param_use[]dnl
+[# undef yyerrok
+# define yyerrok (yystackp->yyerrState = 0)
# undef YYACCEPT
# define YYACCEPT return yyaccept
# undef YYABORT
# undef YYERROR
# define YYERROR return yyerrok, yyerr
# undef YYRECOVERING
-# define YYRECOVERING (yystack->yyerrState != 0)
+# define YYRECOVERING() (yystackp->yyerrState != 0)
# undef yyclearin
-# define yyclearin (yychar = *(yystack->yytokenp) = YYEMPTY)
+# define yyclearin (yychar = YYEMPTY)
# undef YYFILL
# define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal)
# undef YYBACKUP
-# define YYBACKUP(Token, Value) \
+# define YYBACKUP(Token, Value) \
return yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")), \
- yyerrok, yyerr
+ yyerrok, yyerr
yylow = 1;
if (yyrhslen == 0)
*yyvalp = yyval_default;
else
- *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
- YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen);
-]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = *yylocp;
-]])
+ *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;]b4_locations_if([[
+ YYLLOC_DEFAULT ((*yylocp), (yyvsp - yyrhslen), yyrhslen);
+ yystackp->yyerror_range[1].yystate.yyloc = *yylocp;
+]])[
switch (yyn)
{
- b4_actions
+ ]b4_user_actions[
default: break;
}
# undef YYBACKUP
# undef yyclearin
# undef YYRECOVERING
-/* Line __line__ of glr.c. */
-b4_syncline([@oline@], [@ofile@])
}
\f
-static void
+/*ARGSUSED*/ static void
yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
{
- /* `Use' the arguments. */
- (void) yy0;
- (void) yy1;
+ YYUSE (yy0);
+ YYUSE (yy1);
switch (yyn)
{
- b4_mergers
+ ]b4_mergers[
default: break;
}
}
-[
- /* Bison grammar-table manipulation. */
+
+ /* Bison grammar-table manipulation. */
]b4_yydestruct_generate([b4_c_ansi_function_def])[
-/** Number of symbols composing the right hand side of rule #RULE. */
+/** Number of symbols composing the right hand side of rule #RULE. */
static inline int
yyrhsLength (yyRuleNum yyrule)
{
return yyr2[yyrule];
}
-/** Left-hand-side symbol for rule #RULE. */
+static void
+yydestroyGLRState (char const *yymsg, yyGLRState *yys]b4_user_formals[)
+{
+ if (yys->yyresolved)
+ yydestruct (yymsg, yystos[yys->yylrState],
+ &yys->yysemantics.yysval]b4_locuser_args([&yys->yyloc])[);
+ else
+ {
+#if YYDEBUG
+ if (yydebug)
+ {
+ if (yys->yysemantics.yyfirstVal)
+ YYFPRINTF (stderr, "%s unresolved ", yymsg);
+ else
+ YYFPRINTF (stderr, "%s incomplete ", yymsg);
+ yy_symbol_print (stderr, yystos[yys->yylrState],
+ YY_NULL]b4_locuser_args([&yys->yyloc])[);
+ YYFPRINTF (stderr, "\n");
+ }
+#endif
+
+ if (yys->yysemantics.yyfirstVal)
+ {
+ yySemanticOption *yyoption = yys->yysemantics.yyfirstVal;
+ yyGLRState *yyrh;
+ int yyn;
+ for (yyrh = yyoption->yystate, yyn = yyrhsLength (yyoption->yyrule);
+ yyn > 0;
+ yyrh = yyrh->yypred, yyn -= 1)
+ yydestroyGLRState (yymsg, yyrh]b4_user_args[);
+ }
+ }
+}
+
+/** Left-hand-side symbol for rule #RULE. */
static inline yySymbol
yylhsNonterm (yyRuleNum yyrule)
{
return yyr1[yyrule];
}
-#define yyis_pact_ninf(yystate) \
- ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), 1,
- 0,
- ((yystate) == YYPACT_NINF))[
+#define yypact_value_is_default(yystate) \
+ ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
/** True iff LR state STATE has only a default reduction (regardless
- * of token). */
+ * of token). */
static inline yybool
yyisDefaultedState (yyStateNum yystate)
{
- return yyis_pact_ninf (yypact[yystate]);
+ return yypact_value_is_default (yypact[yystate]);
}
-/** The default reduction for STATE, assuming it has one. */
+/** The default reduction for STATE, assuming it has one. */
static inline yyRuleNum
yydefaultAction (yyStateNum yystate)
{
return yydefact[yystate];
}
-#define yyis_table_ninf(yytable_value) \
- ]m4_if(m4_eval(b4_table_ninf < b4_table_min), 1,
- 0,
- ((yytable_value) == YYTABLE_NINF))[
+#define yytable_value_is_error(yytable_value) \
+ ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
/** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
* Result R means
*/
static inline void
yygetLRActions (yyStateNum yystate, int yytoken,
- int* yyaction, const short int** yyconflicts)
+ int* yyaction, const short int** yyconflicts)
{
int yyindex = yypact[yystate] + yytoken;
- if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
+ if (yypact_value_is_default (yypact[yystate])
+ || yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
{
*yyaction = -yydefact[yystate];
*yyconflicts = yyconfl;
}
- else if (! yyis_table_ninf (yytable[yyindex]))
+ else if (! yytable_value_is_error (yytable[yyindex]))
{
*yyaction = yytable[yyindex];
*yyconflicts = yyconfl + yyconflp[yyindex];
return yyaction == 0;
}
- /* GLRStates */
+ /* GLRStates */
+
+/** Return a fresh GLRStackItem. Callers should call
+ * YY_RESERVE_GLRSTACK afterwards to make sure there is sufficient
+ * headroom. */
+static inline yyGLRStackItem*
+yynewGLRStackItem (yyGLRStack* yystackp, yybool yyisState)
+{
+ yyGLRStackItem* yynewItem = yystackp->yynextFree;
+ yystackp->yyspaceLeft -= 1;
+ yystackp->yynextFree += 1;
+ yynewItem->yystate.yyisState = yyisState;
+ return yynewItem;
+}
+
+/** Add a new semantic action that will execute the action for rule
+ * RULENUM on the semantic values in RHS to the list of
+ * alternative actions for STATE. Assumes that RHS comes from
+ * stack #K of *STACKP. */
static void
-yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate,
- yyGLRState* rhs, yyRuleNum yyrule)
-{
- yySemanticOption* yynewItem;
- yynewItem = &yystack->yynextFree->yyoption;
- yystack->yyspaceLeft -= 1;
- yystack->yynextFree += 1;
- yynewItem->yyisState = yyfalse;
- yynewItem->yystate = rhs;
- yynewItem->yyrule = yyrule;
- yynewItem->yynext = yystate->yysemantics.yyfirstVal;
- yystate->yysemantics.yyfirstVal = yynewItem;
- if (yystack->yyspaceLeft < YYHEADROOM)
- yyexpandGLRStack (yystack);
+yyaddDeferredAction (yyGLRStack* yystackp, size_t yyk, yyGLRState* yystate,
+ yyGLRState* rhs, yyRuleNum yyrule)
+{
+ yySemanticOption* yynewOption =
+ &yynewGLRStackItem (yystackp, yyfalse)->yyoption;
+ yynewOption->yystate = rhs;
+ yynewOption->yyrule = yyrule;
+ if (yystackp->yytops.yylookaheadNeeds[yyk])
+ {
+ yynewOption->yyrawchar = yychar;
+ yynewOption->yyval = yylval;]b4_locations_if([
+ yynewOption->yyloc = yylloc;])[
+ }
+ else
+ yynewOption->yyrawchar = YYEMPTY;
+ yynewOption->yynext = yystate->yysemantics.yyfirstVal;
+ yystate->yysemantics.yyfirstVal = yynewOption;
+
+ YY_RESERVE_GLRSTACK (yystackp);
}
- /* GLRStacks */
+ /* GLRStacks */
-/** Initialize SET to a singleton set containing an empty stack. */
+/** Initialize SET to a singleton set containing an empty stack. */
static yybool
yyinitStateSet (yyGLRStateSet* yyset)
{
yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]);
if (! yyset->yystates)
return yyfalse;
- yyset->yystates[0] = NULL;
+ yyset->yystates[0] = YY_NULL;
+ yyset->yylookaheadNeeds =
+ (yybool*) YYMALLOC (16 * sizeof yyset->yylookaheadNeeds[0]);
+ if (! yyset->yylookaheadNeeds)
+ {
+ YYFREE (yyset->yystates);
+ return yyfalse;
+ }
return yytrue;
}
static void yyfreeStateSet (yyGLRStateSet* yyset)
{
YYFREE (yyset->yystates);
+ YYFREE (yyset->yylookaheadNeeds);
}
/** Initialize STACK to a single empty stack, with total maximum
- * capacity for all stacks of SIZE. */
+ * capacity for all stacks of SIZE. */
static yybool
-yyinitGLRStack (yyGLRStack* yystack, size_t yysize)
+yyinitGLRStack (yyGLRStack* yystackp, size_t yysize)
{
- yystack->yyerrState = 0;
+ yystackp->yyerrState = 0;
yynerrs = 0;
- yystack->yyspaceLeft = yysize;
- yystack->yyitems =
- (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]);
- if (!yystack->yyitems)
+ yystackp->yyspaceLeft = yysize;
+ yystackp->yyitems =
+ (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystackp->yynextFree[0]);
+ if (!yystackp->yyitems)
return yyfalse;
- yystack->yynextFree = yystack->yyitems;
- yystack->yysplitPoint = NULL;
- yystack->yylastDeleted = NULL;
- return yyinitStateSet (&yystack->yytops);
+ yystackp->yynextFree = yystackp->yyitems;
+ yystackp->yysplitPoint = YY_NULL;
+ yystackp->yylastDeleted = YY_NULL;
+ return yyinitStateSet (&yystackp->yytops);
}
-#define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \
+
+#if YYSTACKEXPANDABLE
+# define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \
&((YYTOITEMS) - ((YYFROMITEMS) - (yyGLRStackItem*) (YYX)))->YYTYPE
/** If STACK is expandable, extend it. WARNING: Pointers into the
stack from outside should be considered invalid after this call.
We always expand when there are 1 or fewer items left AFTER an
allocation, so that we can avoid having external pointers exist
- across an allocation. */
+ across an allocation. */
static void
-yyexpandGLRStack (yyGLRStack* yystack)
+yyexpandGLRStack (yyGLRStack* yystackp)
{
-#if YYSTACKEXPANDABLE
yyGLRStackItem* yynewItems;
yyGLRStackItem* yyp0, *yyp1;
- size_t yysize, yynewSize;
+ size_t yynewSize;
size_t yyn;
- yysize = yystack->yynextFree - yystack->yyitems;
- if (YYMAXDEPTH <= yysize)
- yyMemoryExhausted (yystack);
+ size_t yysize = yystackp->yynextFree - yystackp->yyitems;
+ if (YYMAXDEPTH - YYHEADROOM < yysize)
+ yyMemoryExhausted (yystackp);
yynewSize = 2*yysize;
if (YYMAXDEPTH < yynewSize)
yynewSize = YYMAXDEPTH;
yynewItems = (yyGLRStackItem*) YYMALLOC (yynewSize * sizeof yynewItems[0]);
if (! yynewItems)
- yyMemoryExhausted (yystack);
- for (yyp0 = yystack->yyitems, yyp1 = yynewItems, yyn = yysize;
+ yyMemoryExhausted (yystackp);
+ for (yyp0 = yystackp->yyitems, yyp1 = yynewItems, yyn = yysize;
0 < yyn;
yyn -= 1, yyp0 += 1, yyp1 += 1)
{
*yyp1 = *yyp0;
if (*(yybool *) yyp0)
- {
- yyGLRState* yys0 = &yyp0->yystate;
- yyGLRState* yys1 = &yyp1->yystate;
- if (yys0->yypred != NULL)
- yys1->yypred =
- YYRELOC (yyp0, yyp1, yys0->yypred, yystate);
- if (! yys0->yyresolved && yys0->yysemantics.yyfirstVal != NULL)
- yys1->yysemantics.yyfirstVal =
- YYRELOC(yyp0, yyp1, yys0->yysemantics.yyfirstVal, yyoption);
- }
+ {
+ yyGLRState* yys0 = &yyp0->yystate;
+ yyGLRState* yys1 = &yyp1->yystate;
+ if (yys0->yypred != YY_NULL)
+ yys1->yypred =
+ YYRELOC (yyp0, yyp1, yys0->yypred, yystate);
+ if (! yys0->yyresolved && yys0->yysemantics.yyfirstVal != YY_NULL)
+ yys1->yysemantics.yyfirstVal =
+ YYRELOC (yyp0, yyp1, yys0->yysemantics.yyfirstVal, yyoption);
+ }
else
- {
- yySemanticOption* yyv0 = &yyp0->yyoption;
- yySemanticOption* yyv1 = &yyp1->yyoption;
- if (yyv0->yystate != NULL)
- yyv1->yystate = YYRELOC (yyp0, yyp1, yyv0->yystate, yystate);
- if (yyv0->yynext != NULL)
- yyv1->yynext = YYRELOC (yyp0, yyp1, yyv0->yynext, yyoption);
- }
+ {
+ yySemanticOption* yyv0 = &yyp0->yyoption;
+ yySemanticOption* yyv1 = &yyp1->yyoption;
+ if (yyv0->yystate != YY_NULL)
+ yyv1->yystate = YYRELOC (yyp0, yyp1, yyv0->yystate, yystate);
+ if (yyv0->yynext != YY_NULL)
+ yyv1->yynext = YYRELOC (yyp0, yyp1, yyv0->yynext, yyoption);
+ }
}
- if (yystack->yysplitPoint != NULL)
- yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewItems,
- yystack->yysplitPoint, yystate);
-
- for (yyn = 0; yyn < yystack->yytops.yysize; yyn += 1)
- if (yystack->yytops.yystates[yyn] != NULL)
- yystack->yytops.yystates[yyn] =
- YYRELOC (yystack->yyitems, yynewItems,
- yystack->yytops.yystates[yyn], yystate);
- YYFREE (yystack->yyitems);
- yystack->yyitems = yynewItems;
- yystack->yynextFree = yynewItems + yysize;
- yystack->yyspaceLeft = yynewSize - yysize;
-
-#else
- yyMemoryExhausted (yystack);
-#endif
+ if (yystackp->yysplitPoint != YY_NULL)
+ yystackp->yysplitPoint = YYRELOC (yystackp->yyitems, yynewItems,
+ yystackp->yysplitPoint, yystate);
+
+ for (yyn = 0; yyn < yystackp->yytops.yysize; yyn += 1)
+ if (yystackp->yytops.yystates[yyn] != YY_NULL)
+ yystackp->yytops.yystates[yyn] =
+ YYRELOC (yystackp->yyitems, yynewItems,
+ yystackp->yytops.yystates[yyn], yystate);
+ YYFREE (yystackp->yyitems);
+ yystackp->yyitems = yynewItems;
+ yystackp->yynextFree = yynewItems + yysize;
+ yystackp->yyspaceLeft = yynewSize - yysize;
}
+#endif
static void
-yyfreeGLRStack (yyGLRStack* yystack)
+yyfreeGLRStack (yyGLRStack* yystackp)
{
- YYFREE (yystack->yyitems);
- yyfreeStateSet (&yystack->yytops);
+ YYFREE (yystackp->yyitems);
+ yyfreeStateSet (&yystackp->yytops);
}
/** Assuming that S is a GLRState somewhere on STACK, update the
* splitpoint of STACK, if needed, so that it is at least as deep as
- * S. */
+ * S. */
static inline void
-yyupdateSplit (yyGLRStack* yystack, yyGLRState* yys)
+yyupdateSplit (yyGLRStack* yystackp, yyGLRState* yys)
{
- if (yystack->yysplitPoint != NULL && yystack->yysplitPoint > yys)
- yystack->yysplitPoint = yys;
+ if (yystackp->yysplitPoint != YY_NULL && yystackp->yysplitPoint > yys)
+ yystackp->yysplitPoint = yys;
}
-/** Invalidate stack #K in STACK. */
+/** Invalidate stack #K in STACK. */
static inline void
-yymarkStackDeleted (yyGLRStack* yystack, size_t yyk)
+yymarkStackDeleted (yyGLRStack* yystackp, size_t yyk)
{
- if (yystack->yytops.yystates[yyk] != NULL)
- yystack->yylastDeleted = yystack->yytops.yystates[yyk];
- yystack->yytops.yystates[yyk] = NULL;
+ if (yystackp->yytops.yystates[yyk] != YY_NULL)
+ yystackp->yylastDeleted = yystackp->yytops.yystates[yyk];
+ yystackp->yytops.yystates[yyk] = YY_NULL;
}
/** Undelete the last stack that was marked as deleted. Can only be
done once after a deletion, and only when all other stacks have
- been deleted. */
+ been deleted. */
static void
-yyundeleteLastStack (yyGLRStack* yystack)
+yyundeleteLastStack (yyGLRStack* yystackp)
{
- if (yystack->yylastDeleted == NULL || yystack->yytops.yysize != 0)
+ if (yystackp->yylastDeleted == YY_NULL || yystackp->yytops.yysize != 0)
return;
- yystack->yytops.yystates[0] = yystack->yylastDeleted;
- yystack->yytops.yysize = 1;
+ yystackp->yytops.yystates[0] = yystackp->yylastDeleted;
+ yystackp->yytops.yysize = 1;
YYDPRINTF ((stderr, "Restoring last deleted stack as stack #0.\n"));
- yystack->yylastDeleted = NULL;
+ yystackp->yylastDeleted = YY_NULL;
}
static inline void
-yyremoveDeletes (yyGLRStack* yystack)
+yyremoveDeletes (yyGLRStack* yystackp)
{
size_t yyi, yyj;
yyi = yyj = 0;
- while (yyj < yystack->yytops.yysize)
+ while (yyj < yystackp->yytops.yysize)
{
- if (yystack->yytops.yystates[yyi] == NULL)
- {
- if (yyi == yyj)
- {
- YYDPRINTF ((stderr, "Removing dead stacks.\n"));
- }
- yystack->yytops.yysize -= 1;
- }
+ if (yystackp->yytops.yystates[yyi] == YY_NULL)
+ {
+ if (yyi == yyj)
+ {
+ YYDPRINTF ((stderr, "Removing dead stacks.\n"));
+ }
+ yystackp->yytops.yysize -= 1;
+ }
else
- {
- yystack->yytops.yystates[yyj] = yystack->yytops.yystates[yyi];
- if (yyj != yyi)
- {
- YYDPRINTF ((stderr, "Rename stack %lu -> %lu.\n",
- (unsigned long int) yyi, (unsigned long int) yyj));
- }
- yyj += 1;
- }
+ {
+ yystackp->yytops.yystates[yyj] = yystackp->yytops.yystates[yyi];
+ /* In the current implementation, it's unnecessary to copy
+ yystackp->yytops.yylookaheadNeeds[yyi] since, after
+ yyremoveDeletes returns, the parser immediately either enters
+ deterministic operation or shifts a token. However, it doesn't
+ hurt, and the code might evolve to need it. */
+ yystackp->yytops.yylookaheadNeeds[yyj] =
+ yystackp->yytops.yylookaheadNeeds[yyi];
+ if (yyj != yyi)
+ {
+ YYDPRINTF ((stderr, "Rename stack %lu -> %lu.\n",
+ (unsigned long int) yyi, (unsigned long int) yyj));
+ }
+ yyj += 1;
+ }
yyi += 1;
}
}
/** Shift to a new state on stack #K of STACK, corresponding to LR state
- * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */
+ * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */
static inline void
-yyglrShift (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState,
- size_t yyposn,
- YYSTYPE yysval, YYLTYPE* yylocp)
-{
- yyGLRStackItem* yynewItem;
-
- yynewItem = yystack->yynextFree;
- yystack->yynextFree += 1;
- yystack->yyspaceLeft -= 1;
- yynewItem->yystate.yyisState = yytrue;
- yynewItem->yystate.yylrState = yylrState;
- yynewItem->yystate.yyposn = yyposn;
- yynewItem->yystate.yyresolved = yytrue;
- yynewItem->yystate.yypred = yystack->yytops.yystates[yyk];
- yystack->yytops.yystates[yyk] = &yynewItem->yystate;
- yynewItem->yystate.yysemantics.yysval = yysval;
- yynewItem->yystate.yyloc = *yylocp;
- if (yystack->yyspaceLeft < YYHEADROOM)
- yyexpandGLRStack (yystack);
+yyglrShift (yyGLRStack* yystackp, size_t yyk, yyStateNum yylrState,
+ size_t yyposn,
+ YYSTYPE* yyvalp]b4_locations_if([, YYLTYPE* yylocp])[)
+{
+ yyGLRState* yynewState = &yynewGLRStackItem (yystackp, yytrue)->yystate;
+
+ yynewState->yylrState = yylrState;
+ yynewState->yyposn = yyposn;
+ yynewState->yyresolved = yytrue;
+ yynewState->yypred = yystackp->yytops.yystates[yyk];
+ yynewState->yysemantics.yysval = *yyvalp;]b4_locations_if([
+ yynewState->yyloc = *yylocp;])[
+ yystackp->yytops.yystates[yyk] = yynewState;
+
+ YY_RESERVE_GLRSTACK (yystackp);
}
/** Shift stack #K of YYSTACK, to a new state corresponding to LR
* state YYLRSTATE, at input position YYPOSN, with the (unresolved)
- * semantic value of YYRHS under the action for YYRULE. */
+ * semantic value of YYRHS under the action for YYRULE. */
static inline void
-yyglrShiftDefer (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState,
- size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule)
-{
- yyGLRStackItem* yynewItem;
-
- yynewItem = yystack->yynextFree;
- yynewItem->yystate.yyisState = yytrue;
- yynewItem->yystate.yylrState = yylrState;
- yynewItem->yystate.yyposn = yyposn;
- yynewItem->yystate.yyresolved = yyfalse;
- yynewItem->yystate.yypred = yystack->yytops.yystates[yyk];
- yynewItem->yystate.yysemantics.yyfirstVal = NULL;
- yystack->yytops.yystates[yyk] = &yynewItem->yystate;
- yystack->yynextFree += 1;
- yystack->yyspaceLeft -= 1;
- yyaddDeferredAction (yystack, &yynewItem->yystate, rhs, yyrule);
+yyglrShiftDefer (yyGLRStack* yystackp, size_t yyk, yyStateNum yylrState,
+ size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule)
+{
+ yyGLRState* yynewState = &yynewGLRStackItem (yystackp, yytrue)->yystate;
+
+ yynewState->yylrState = yylrState;
+ yynewState->yyposn = yyposn;
+ yynewState->yyresolved = yyfalse;
+ yynewState->yypred = yystackp->yytops.yystates[yyk];
+ yynewState->yysemantics.yyfirstVal = YY_NULL;
+ yystackp->yytops.yystates[yyk] = yynewState;
+
+ /* Invokes YY_RESERVE_GLRSTACK. */
+ yyaddDeferredAction (yystackp, yyk, yynewState, rhs, yyrule);
}
/** Pop the symbols consumed by reduction #RULE from the top of stack
* #K of STACK, and perform the appropriate semantic action on their
* semantic values. Assumes that all ambiguities in semantic values
- * have been previously resolved. Set *VALP to the resulting value,
+ * have been previously resolved. Set *VALP to the resulting value,
* and *LOCP to the computed location (if any). Return value is as
- * for userAction. */
+ * for userAction. */
static inline YYRESULTTAG
-yydoAction (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
- YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
+yydoAction (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,
+ YYSTYPE* yyvalp]b4_locuser_formals[)
{
int yynrhs = yyrhsLength (yyrule);
- if (yystack->yysplitPoint == NULL)
+ if (yystackp->yysplitPoint == YY_NULL)
{
- /* Standard special case: single stack. */
- yyGLRStackItem* rhs = (yyGLRStackItem*) yystack->yytops.yystates[yyk];
+ /* Standard special case: single stack. */
+ yyGLRStackItem* rhs = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];
YYASSERT (yyk == 0);
- yystack->yynextFree -= yynrhs;
- yystack->yyspaceLeft += yynrhs;
- yystack->yytops.yystates[0] = & yystack->yynextFree[-1].yystate;
- return yyuserAction (yyrule, yynrhs, rhs,
- yyvalp, yylocp, yystack]b4_user_args[);
+ yystackp->yynextFree -= yynrhs;
+ yystackp->yyspaceLeft += yynrhs;
+ yystackp->yytops.yystates[0] = & yystackp->yynextFree[-1].yystate;
+ return yyuserAction (yyrule, yynrhs, rhs, yystackp,
+ yyvalp]b4_locuser_args[);
}
else
{
+ /* At present, doAction is never called in nondeterministic
+ * mode, so this branch is never taken. It is here in
+ * anticipation of a future feature that will allow immediate
+ * evaluation of selected actions in nondeterministic mode. */
int yyi;
yyGLRState* yys;
yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
yys = yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred
- = yystack->yytops.yystates[yyk];
+ = yystackp->yytops.yystates[yyk];]b4_locations_if([[
+ if (yynrhs == 0)
+ /* Set default location. */
+ yyrhsVals[YYMAXRHS + YYMAXLEFT - 1].yystate.yyloc = yys->yyloc;]])[
for (yyi = 0; yyi < yynrhs; yyi += 1)
- {
- yys = yys->yypred;
- YYASSERT (yys);
- }
- yyupdateSplit (yystack, yys);
- yystack->yytops.yystates[yyk] = yys;
+ {
+ yys = yys->yypred;
+ YYASSERT (yys);
+ }
+ yyupdateSplit (yystackp, yys);
+ yystackp->yytops.yystates[yyk] = yys;
return yyuserAction (yyrule, yynrhs, yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
- yyvalp, yylocp, yystack]b4_user_args[);
+ yystackp, yyvalp]b4_locuser_args[);
}
}
#if !YYDEBUG
-# define YY_REDUCE_PRINT(K, Rule)
+# define YY_REDUCE_PRINT(Args)
#else
-# define YY_REDUCE_PRINT(K, Rule) \
-do { \
- if (yydebug) \
- yy_reduce_print (K, Rule); \
-} while (0)
+# define YY_REDUCE_PRINT(Args) \
+do { \
+ if (yydebug) \
+ yy_reduce_print Args; \
+} while (YYID (0))
/*----------------------------------------------------------.
| Report that the RULE is going to be reduced on stack #K. |
`----------------------------------------------------------*/
-static inline void
-yy_reduce_print (size_t yyk, yyRuleNum yyrule)
+/*ARGSUSED*/ static inline void
+yy_reduce_print (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,
+ YYSTYPE* yyvalp]b4_locuser_formals[)
{
+ int yynrhs = yyrhsLength (yyrule);
+ yybool yynormal __attribute__ ((__unused__)) =
+ (yystackp->yysplitPoint == YY_NULL);
+ yyGLRStackItem* yyvsp = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];
+ int yylow = 1;
int yyi;
- YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu), ",
- (unsigned long int) yyk, yyrule - 1,
- (unsigned long int) yyrline[yyrule]);
- /* Print the symbols being reduced, and their result. */
- for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
- YYFPRINTF (stderr, "%s ", yytokenName (yyrhs[yyi]));
- YYFPRINTF (stderr, "-> %s\n", yytokenName (yyr1[yyrule]));
+ YYUSE (yyvalp);]b4_locations_if([
+ YYUSE (yylocp);])[
+]b4_parse_param_use[]dnl
+[ YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu):\n",
+ (unsigned long int) yyk, yyrule - 1,
+ (unsigned long int) yyrline[yyrule]);
+ /* 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");
+ }
}
#endif
* the new state. If the new state would have an identical input
* position, LR state, and predecessor to an existing state on the stack,
* it is identified with that existing state, eliminating stack #K from
- * the STACK. In this case, the (necessarily deferred) semantic value is
+ * the STACK. In this case, the (necessarily deferred) semantic value is
* added to the options for the existing state's semantic value.
*/
static inline YYRESULTTAG
-yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
+yyglrReduce (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,
yybool yyforceEval]b4_user_formals[)
{
- size_t yyposn = yystack->yytops.yystates[yyk]->yyposn;
+ size_t yyposn = yystackp->yytops.yystates[yyk]->yyposn;
- if (yyforceEval || yystack->yysplitPoint == NULL)
+ if (yyforceEval || yystackp->yysplitPoint == YY_NULL)
{
- YYSTYPE yysval;
- YYLTYPE yyloc;
-
- YY_REDUCE_PRINT (yyk, yyrule);
- YYCHK (yydoAction (yystack, yyk, yyrule, &yysval, &yyloc]b4_user_args[));
- yyglrShift (yystack, yyk,
- yyLRgotoState (yystack->yytops.yystates[yyk]->yylrState,
- yylhsNonterm (yyrule)),
- yyposn, yysval, &yyloc);
+ YYSTYPE yysval;]b4_locations_if([
+ YYLTYPE yyloc;])[
+
+ YY_REDUCE_PRINT ((yystackp, yyk, yyrule, &yysval]b4_locuser_args([&yyloc])[));
+ YYCHK (yydoAction (yystackp, yyk, yyrule, &yysval]b4_locuser_args([&yyloc])[));
+ YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyrule], &yysval, &yyloc);
+ yyglrShift (yystackp, yyk,
+ yyLRgotoState (yystackp->yytops.yystates[yyk]->yylrState,
+ yylhsNonterm (yyrule)),
+ yyposn, &yysval]b4_locations_if([, &yyloc])[);
}
else
{
size_t yyi;
int yyn;
- yyGLRState* yys, *yys0 = yystack->yytops.yystates[yyk];
+ yyGLRState* yys, *yys0 = yystackp->yytops.yystates[yyk];
yyStateNum yynewLRState;
- for (yys = yystack->yytops.yystates[yyk], yyn = yyrhsLength (yyrule);
- 0 < yyn; yyn -= 1)
- {
- yys = yys->yypred;
- YYASSERT (yys);
- }
- yyupdateSplit (yystack, yys);
+ for (yys = yystackp->yytops.yystates[yyk], yyn = yyrhsLength (yyrule);
+ 0 < yyn; yyn -= 1)
+ {
+ yys = yys->yypred;
+ YYASSERT (yys);
+ }
+ yyupdateSplit (yystackp, yys);
yynewLRState = yyLRgotoState (yys->yylrState, yylhsNonterm (yyrule));
YYDPRINTF ((stderr,
- "Reduced stack %lu by rule #%d; action deferred. Now in state %d.\n",
- (unsigned long int) yyk, yyrule - 1, yynewLRState));
- for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
- if (yyi != yyk && yystack->yytops.yystates[yyi] != NULL)
- {
- yyGLRState* yyp, *yysplit = yystack->yysplitPoint;
- yyp = yystack->yytops.yystates[yyi];
- while (yyp != yys && yyp != yysplit && yyp->yyposn >= yyposn)
- {
- if (yyp->yylrState == yynewLRState && yyp->yypred == yys)
- {
- yyaddDeferredAction (yystack, yyp, yys0, yyrule);
- yymarkStackDeleted (yystack, yyk);
- YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n",
- (unsigned long int) yyk,
- (unsigned long int) yyi));
- return yyok;
- }
- yyp = yyp->yypred;
- }
- }
- yystack->yytops.yystates[yyk] = yys;
- yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule);
+ "Reduced stack %lu by rule #%d; action deferred. Now in state %d.\n",
+ (unsigned long int) yyk, yyrule - 1, yynewLRState));
+ for (yyi = 0; yyi < yystackp->yytops.yysize; yyi += 1)
+ if (yyi != yyk && yystackp->yytops.yystates[yyi] != YY_NULL)
+ {
+ yyGLRState *yysplit = yystackp->yysplitPoint;
+ yyGLRState *yyp = yystackp->yytops.yystates[yyi];
+ while (yyp != yys && yyp != yysplit && yyp->yyposn >= yyposn)
+ {
+ if (yyp->yylrState == yynewLRState && yyp->yypred == yys)
+ {
+ yyaddDeferredAction (yystackp, yyk, yyp, yys0, yyrule);
+ yymarkStackDeleted (yystackp, yyk);
+ YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n",
+ (unsigned long int) yyk,
+ (unsigned long int) yyi));
+ return yyok;
+ }
+ yyp = yyp->yypred;
+ }
+ }
+ yystackp->yytops.yystates[yyk] = yys;
+ yyglrShiftDefer (yystackp, yyk, yynewLRState, yyposn, yys0, yyrule);
}
return yyok;
}
static size_t
-yysplitStack (yyGLRStack* yystack, size_t yyk)
+yysplitStack (yyGLRStack* yystackp, size_t yyk)
{
- if (yystack->yysplitPoint == NULL)
+ if (yystackp->yysplitPoint == YY_NULL)
{
YYASSERT (yyk == 0);
- yystack->yysplitPoint = yystack->yytops.yystates[yyk];
+ yystackp->yysplitPoint = yystackp->yytops.yystates[yyk];
}
- if (yystack->yytops.yysize >= yystack->yytops.yycapacity)
+ if (yystackp->yytops.yysize >= yystackp->yytops.yycapacity)
{
yyGLRState** yynewStates;
- if (! ((yystack->yytops.yycapacity
- <= (YYSIZEMAX / (2 * sizeof yynewStates[0])))
- && (yynewStates =
- (yyGLRState**) YYREALLOC (yystack->yytops.yystates,
- ((yystack->yytops.yycapacity *= 2)
- * sizeof yynewStates[0])))))
- yyMemoryExhausted (yystack);
- yystack->yytops.yystates = yynewStates;
+ yybool* yynewLookaheadNeeds;
+
+ yynewStates = YY_NULL;
+
+ if (yystackp->yytops.yycapacity
+ > (YYSIZEMAX / (2 * sizeof yynewStates[0])))
+ yyMemoryExhausted (yystackp);
+ yystackp->yytops.yycapacity *= 2;
+
+ yynewStates =
+ (yyGLRState**) YYREALLOC (yystackp->yytops.yystates,
+ (yystackp->yytops.yycapacity
+ * sizeof yynewStates[0]));
+ if (yynewStates == YY_NULL)
+ yyMemoryExhausted (yystackp);
+ yystackp->yytops.yystates = yynewStates;
+
+ yynewLookaheadNeeds =
+ (yybool*) YYREALLOC (yystackp->yytops.yylookaheadNeeds,
+ (yystackp->yytops.yycapacity
+ * sizeof yynewLookaheadNeeds[0]));
+ if (yynewLookaheadNeeds == YY_NULL)
+ yyMemoryExhausted (yystackp);
+ yystackp->yytops.yylookaheadNeeds = yynewLookaheadNeeds;
}
- yystack->yytops.yystates[yystack->yytops.yysize]
- = yystack->yytops.yystates[yyk];
- yystack->yytops.yysize += 1;
- return yystack->yytops.yysize-1;
+ yystackp->yytops.yystates[yystackp->yytops.yysize]
+ = yystackp->yytops.yystates[yyk];
+ yystackp->yytops.yylookaheadNeeds[yystackp->yytops.yysize]
+ = yystackp->yytops.yylookaheadNeeds[yyk];
+ yystackp->yytops.yysize += 1;
+ return yystackp->yytops.yysize-1;
}
/** True iff Y0 and Y1 represent identical options at the top level.
* That is, they represent the same rule applied to RHS symbols
- * that produce the same terminal symbols. */
+ * that produce the same terminal symbols. */
static yybool
yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1)
{
yyGLRState *yys0, *yys1;
int yyn;
for (yys0 = yyy0->yystate, yys1 = yyy1->yystate,
- yyn = yyrhsLength (yyy0->yyrule);
- yyn > 0;
- yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1)
- if (yys0->yyposn != yys1->yyposn)
- return yyfalse;
+ yyn = yyrhsLength (yyy0->yyrule);
+ yyn > 0;
+ yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1)
+ if (yys0->yyposn != yys1->yyposn)
+ return yyfalse;
return yytrue;
}
else
}
/** Assuming identicalOptions (Y0,Y1), destructively merge the
- * alternative semantic values for the RHS-symbols of Y1 and Y0. */
+ * alternative semantic values for the RHS-symbols of Y1 and Y0. */
static void
yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1)
{
yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1)
{
if (yys0 == yys1)
- break;
+ break;
else if (yys0->yyresolved)
- {
- yys1->yyresolved = yytrue;
- yys1->yysemantics.yysval = yys0->yysemantics.yysval;
- }
+ {
+ yys1->yyresolved = yytrue;
+ yys1->yysemantics.yysval = yys0->yysemantics.yysval;
+ }
else if (yys1->yyresolved)
- {
- yys0->yyresolved = yytrue;
- yys0->yysemantics.yysval = yys1->yysemantics.yysval;
- }
+ {
+ yys0->yyresolved = yytrue;
+ yys0->yysemantics.yysval = yys1->yysemantics.yysval;
+ }
else
- {
- yySemanticOption** yyz0p;
- yySemanticOption* yyz1;
- yyz0p = &yys0->yysemantics.yyfirstVal;
- yyz1 = yys1->yysemantics.yyfirstVal;
- while (yytrue)
- {
- if (yyz1 == *yyz0p || yyz1 == NULL)
- break;
- else if (*yyz0p == NULL)
- {
- *yyz0p = yyz1;
- break;
- }
- else if (*yyz0p < yyz1)
- {
- yySemanticOption* yyz = *yyz0p;
- *yyz0p = yyz1;
- yyz1 = yyz1->yynext;
- (*yyz0p)->yynext = yyz;
- }
- yyz0p = &(*yyz0p)->yynext;
- }
- yys1->yysemantics.yyfirstVal = yys0->yysemantics.yyfirstVal;
- }
+ {
+ yySemanticOption** yyz0p = &yys0->yysemantics.yyfirstVal;
+ yySemanticOption* yyz1 = yys1->yysemantics.yyfirstVal;
+ while (YYID (yytrue))
+ {
+ if (yyz1 == *yyz0p || yyz1 == YY_NULL)
+ break;
+ else if (*yyz0p == YY_NULL)
+ {
+ *yyz0p = yyz1;
+ break;
+ }
+ else if (*yyz0p < yyz1)
+ {
+ yySemanticOption* yyz = *yyz0p;
+ *yyz0p = yyz1;
+ yyz1 = yyz1->yynext;
+ (*yyz0p)->yynext = yyz;
+ }
+ yyz0p = &(*yyz0p)->yynext;
+ }
+ yys1->yysemantics.yyfirstVal = yys0->yysemantics.yyfirstVal;
+ }
}
}
/** Y0 and Y1 represent two possible actions to take in a given
* parsing state; return 0 if no combination is possible,
- * 1 if user-mergeable, 2 if Y0 is preferred, 3 if Y1 is preferred. */
+ * 1 if user-mergeable, 2 if Y0 is preferred, 3 if Y1 is preferred. */
static int
yypreference (yySemanticOption* y0, yySemanticOption* y1)
{
if (p0 == p1)
{
if (yymerger[r0] == 0 || yymerger[r0] != yymerger[r1])
- return 0;
+ return 0;
else
- return 1;
+ return 1;
}
if (p0 == 0 || p1 == 0)
return 0;
return 0;
}
-static YYRESULTTAG yyresolveValue (yySemanticOption* yyoptionList,
- yyGLRStack* yystack, YYSTYPE* yyvalp,
- YYLTYPE* yylocp]b4_user_formals[);
+static YYRESULTTAG yyresolveValue (yyGLRState* yys,
+ yyGLRStack* yystackp]b4_user_formals[);
+
+/** Resolve the previous N states starting at and including state S. If result
+ * != yyok, some states may have been left unresolved possibly with empty
+ * semantic option chains. Regardless of whether result = yyok, each state
+ * has been left with consistent data so that yydestroyGLRState can be invoked
+ * if necessary. */
static YYRESULTTAG
-yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack]b4_user_formals[)
+yyresolveStates (yyGLRState* yys, int yyn,
+ yyGLRStack* yystackp]b4_user_formals[)
{
- YYRESULTTAG yyflag;
if (0 < yyn)
{
YYASSERT (yys->yypred);
- yyflag = yyresolveStates (yys->yypred, yyn-1, yystack]b4_user_args[);
- if (yyflag != yyok)
- return yyflag;
+ YYCHK (yyresolveStates (yys->yypred, yyn-1, yystackp]b4_user_args[));
if (! yys->yyresolved)
- {
- yyflag = yyresolveValue (yys->yysemantics.yyfirstVal, yystack,
- &yys->yysemantics.yysval, &yys->yyloc
- ]b4_user_args[);
- if (yyflag != yyok)
- return yyflag;
- yys->yyresolved = yytrue;
- }
+ YYCHK (yyresolveValue (yys, yystackp]b4_user_args[));
}
return yyok;
}
+/** Resolve the states for the RHS of OPT, perform its user action, and return
+ * the semantic value and location. Regardless of whether result = yyok, all
+ * RHS states have been destroyed (assuming the user action destroys all RHS
+ * semantic values if invoked). */
static YYRESULTTAG
-yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystack,
- YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
+yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystackp,
+ YYSTYPE* yyvalp]b4_locuser_formals[)
{
yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
- int yynrhs;
-
- yynrhs = yyrhsLength (yyopt->yyrule);
- YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystack]b4_user_args[));
- yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred = yyopt->yystate;
- return yyuserAction (yyopt->yyrule, yynrhs,
- yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
- yyvalp, yylocp, yystack]b4_user_args[);
+ int yynrhs = yyrhsLength (yyopt->yyrule);
+ YYRESULTTAG yyflag =
+ yyresolveStates (yyopt->yystate, yynrhs, yystackp]b4_user_args[);
+ if (yyflag != yyok)
+ {
+ yyGLRState *yys;
+ for (yys = yyopt->yystate; yynrhs > 0; yys = yys->yypred, yynrhs -= 1)
+ yydestroyGLRState ("Cleanup: popping", yys]b4_user_args[);
+ return yyflag;
+ }
+
+ yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred = yyopt->yystate;]b4_locations_if([[
+ if (yynrhs == 0)
+ /* Set default location. */
+ yyrhsVals[YYMAXRHS + YYMAXLEFT - 1].yystate.yyloc = yyopt->yystate->yyloc;]])[
+ {
+ int yychar_current = yychar;
+ YYSTYPE yylval_current = yylval;]b4_locations_if([
+ YYLTYPE yylloc_current = yylloc;])[
+ yychar = yyopt->yyrawchar;
+ yylval = yyopt->yyval;]b4_locations_if([
+ yylloc = yyopt->yyloc;])[
+ yyflag = yyuserAction (yyopt->yyrule, yynrhs,
+ yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
+ yystackp, yyvalp]b4_locuser_args[);
+ yychar = yychar_current;
+ yylval = yylval_current;]b4_locations_if([
+ yylloc = yylloc_current;])[
+ }
+ return yyflag;
}
#if YYDEBUG
int yynrhs = yyrhsLength (yyx->yyrule);
int yyi;
yyGLRState* yys;
- yyGLRState* yystates[YYMAXRHS];
+ yyGLRState* yystates[1 + YYMAXRHS];
yyGLRState yyleftmost_state;
for (yyi = yynrhs, yys = yyx->yystate; 0 < yyi; yyi -= 1, yys = yys->yypred)
yystates[yyi] = yys;
- if (yys == NULL)
+ if (yys == YY_NULL)
{
yyleftmost_state.yyposn = 0;
yystates[0] = &yyleftmost_state;
if (yyx->yystate->yyposn < yys->yyposn + 1)
YYFPRINTF (stderr, "%*s%s -> <Rule %d, empty>\n",
- yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
- yyx->yyrule);
+ yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
+ yyx->yyrule - 1);
else
YYFPRINTF (stderr, "%*s%s -> <Rule %d, tokens %lu .. %lu>\n",
- yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
- yyx->yyrule, (unsigned long int) (yys->yyposn + 1),
- (unsigned long int) yyx->yystate->yyposn);
+ yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
+ yyx->yyrule - 1, (unsigned long int) (yys->yyposn + 1),
+ (unsigned long int) yyx->yystate->yyposn);
for (yyi = 1; yyi <= yynrhs; yyi += 1)
{
if (yystates[yyi]->yyresolved)
- {
- if (yystates[yyi-1]->yyposn+1 > yystates[yyi]->yyposn)
- YYFPRINTF (stderr, "%*s%s <empty>\n", yyindent+2, "",
- yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]));
- else
- YYFPRINTF (stderr, "%*s%s <tokens %lu .. %lu>\n", yyindent+2, "",
- yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]),
- (unsigned long int) (yystates[yyi - 1]->yyposn + 1),
- (unsigned long int) yystates[yyi]->yyposn);
- }
+ {
+ if (yystates[yyi-1]->yyposn+1 > yystates[yyi]->yyposn)
+ YYFPRINTF (stderr, "%*s%s <empty>\n", yyindent+2, "",
+ yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]));
+ else
+ YYFPRINTF (stderr, "%*s%s <tokens %lu .. %lu>\n", yyindent+2, "",
+ yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]),
+ (unsigned long int) (yystates[yyi - 1]->yyposn + 1),
+ (unsigned long int) yystates[yyi]->yyposn);
+ }
else
- yyreportTree (yystates[yyi]->yysemantics.yyfirstVal, yyindent+2);
+ yyreportTree (yystates[yyi]->yysemantics.yyfirstVal, yyindent+2);
}
}
#endif
-static void yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
- yyGLRStack* yystack]b4_pure_formals[)
- __attribute__ ((__noreturn__));
-static void
-yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
- yyGLRStack* yystack]b4_pure_formals[)
+/*ARGSUSED*/ static YYRESULTTAG
+yyreportAmbiguity (yySemanticOption* yyx0,
+ yySemanticOption* yyx1]b4_pure_formals[)
{
- /* `Unused' warnings. */
- (void) yyx0;
- (void) yyx1;
+ YYUSE (yyx0);
+ YYUSE (yyx1);
#if YYDEBUG
YYFPRINTF (stderr, "Ambiguity detected.\n");
yyreportTree (yyx1, 2);
YYFPRINTF (stderr, "\n");
#endif
- yyFail (yystack][]b4_pure_args[, YY_("syntax is ambiguous"));
-}
+ yyerror (]b4_yyerror_args[YY_("syntax is ambiguous"));
+ return yyabort;
+}]b4_locations_if([[
-/** Resolve the ambiguity represented by OPTIONLIST, perform the indicated
- * actions, and return the result. */
+/** Starting at and including state S1, resolve the location for each of the
+ * previous N1 states that is unresolved. The first semantic option of a state
+ * is always chosen. */
+static void
+yyresolveLocations (yyGLRState* yys1, int yyn1,
+ yyGLRStack *yystackp]b4_user_formals[)
+{
+ if (0 < yyn1)
+ {
+ yyresolveLocations (yys1->yypred, yyn1 - 1, yystackp]b4_user_args[);
+ if (!yys1->yyresolved)
+ {
+ yyGLRStackItem yyrhsloc[1 + YYMAXRHS];
+ int yynrhs;
+ yySemanticOption *yyoption = yys1->yysemantics.yyfirstVal;
+ YYASSERT (yyoption != YY_NULL);
+ yynrhs = yyrhsLength (yyoption->yyrule);
+ if (yynrhs > 0)
+ {
+ yyGLRState *yys;
+ int yyn;
+ yyresolveLocations (yyoption->yystate, yynrhs,
+ yystackp]b4_user_args[);
+ for (yys = yyoption->yystate, yyn = yynrhs;
+ yyn > 0;
+ yys = yys->yypred, yyn -= 1)
+ yyrhsloc[yyn].yystate.yyloc = yys->yyloc;
+ }
+ else
+ {
+ /* Both yyresolveAction and yyresolveLocations traverse the GSS
+ in reverse rightmost order. It is only necessary to invoke
+ yyresolveLocations on a subforest for which yyresolveAction
+ would have been invoked next had an ambiguity not been
+ detected. Thus the location of the previous state (but not
+ necessarily the previous state itself) is guaranteed to be
+ resolved already. */
+ yyGLRState *yyprevious = yyoption->yystate;
+ yyrhsloc[0].yystate.yyloc = yyprevious->yyloc;
+ }
+ {
+ int yychar_current = yychar;
+ YYSTYPE yylval_current = yylval;
+ YYLTYPE yylloc_current = yylloc;
+ yychar = yyoption->yyrawchar;
+ yylval = yyoption->yyval;
+ yylloc = yyoption->yyloc;
+ YYLLOC_DEFAULT ((yys1->yyloc), yyrhsloc, yynrhs);
+ yychar = yychar_current;
+ yylval = yylval_current;
+ yylloc = yylloc_current;
+ }
+ }
+ }
+}]])[
+
+/** Resolve the ambiguity represented in state S, perform the indicated
+ * actions, and set the semantic value of S. If result != yyok, the chain of
+ * semantic options in S has been cleared instead or it has been left
+ * unmodified except that redundant options may have been removed. Regardless
+ * of whether result = yyok, S has been left with consistent data so that
+ * yydestroyGLRState can be invoked if necessary. */
static YYRESULTTAG
-yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack,
- YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
+yyresolveValue (yyGLRState* yys, yyGLRStack* yystackp]b4_user_formals[)
{
- yySemanticOption* yybest;
+ yySemanticOption* yyoptionList = yys->yysemantics.yyfirstVal;
+ yySemanticOption* yybest = yyoptionList;
yySemanticOption** yypp;
- yybool yymerge;
+ yybool yymerge = yyfalse;
+ YYSTYPE yysval;
+ YYRESULTTAG yyflag;]b4_locations_if([
+ YYLTYPE *yylocp = &yys->yyloc;])[
- yybest = yyoptionList;
- yymerge = yyfalse;
- for (yypp = &yyoptionList->yynext; *yypp != NULL; )
+ for (yypp = &yyoptionList->yynext; *yypp != YY_NULL; )
{
yySemanticOption* yyp = *yypp;
if (yyidenticalOptions (yybest, yyp))
- {
- yymergeOptionSets (yybest, yyp);
- *yypp = yyp->yynext;
- }
+ {
+ yymergeOptionSets (yybest, yyp);
+ *yypp = yyp->yynext;
+ }
else
- {
- switch (yypreference (yybest, yyp))
- {
- case 0:
- yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[);
- break;
- case 1:
- yymerge = yytrue;
- break;
- case 2:
- break;
- case 3:
- yybest = yyp;
- yymerge = yyfalse;
- break;
- }
- yypp = &yyp->yynext;
- }
+ {
+ switch (yypreference (yybest, yyp))
+ {
+ case 0:]b4_locations_if([[
+ yyresolveLocations (yys, 1, yystackp]b4_user_args[);]])[
+ return yyreportAmbiguity (yybest, yyp]b4_pure_args[);
+ break;
+ case 1:
+ yymerge = yytrue;
+ break;
+ case 2:
+ break;
+ case 3:
+ yybest = yyp;
+ yymerge = yyfalse;
+ break;
+ default:
+ /* This cannot happen so it is not worth a YYASSERT (yyfalse),
+ but some compilers complain if the default case is
+ omitted. */
+ break;
+ }
+ yypp = &yyp->yynext;
+ }
}
if (yymerge)
{
yySemanticOption* yyp;
int yyprec = yydprec[yybest->yyrule];
- YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[));
- for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext)
- {
- if (yyprec == yydprec[yyp->yyrule])
- {
- YYSTYPE yyval1;
- YYLTYPE yydummy;
- YYCHK (yyresolveAction (yyp, yystack, &yyval1, &yydummy]b4_user_args[));
- yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1);
- }
- }
- return yyok;
+ yyflag = yyresolveAction (yybest, yystackp, &yysval]b4_locuser_args[);
+ if (yyflag == yyok)
+ for (yyp = yybest->yynext; yyp != YY_NULL; yyp = yyp->yynext)
+ {
+ if (yyprec == yydprec[yyp->yyrule])
+ {
+ YYSTYPE yysval_other;]b4_locations_if([
+ YYLTYPE yydummy;])[
+ yyflag = yyresolveAction (yyp, yystackp, &yysval_other]b4_locuser_args([&yydummy])[);
+ if (yyflag != yyok)
+ {
+ yydestruct ("Cleanup: discarding incompletely merged value for",
+ yystos[yys->yylrState],
+ &yysval]b4_locuser_args[);
+ break;
+ }
+ yyuserMerge (yymerger[yyp->yyrule], &yysval, &yysval_other);
+ }
+ }
}
else
- return yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[);
+ yyflag = yyresolveAction (yybest, yystackp, &yysval]b4_locuser_args([yylocp])[);
+
+ if (yyflag == yyok)
+ {
+ yys->yyresolved = yytrue;
+ yys->yysemantics.yysval = yysval;
+ }
+ else
+ yys->yysemantics.yyfirstVal = YY_NULL;
+ return yyflag;
}
static YYRESULTTAG
-yyresolveStack (yyGLRStack* yystack]b4_user_formals[)
+yyresolveStack (yyGLRStack* yystackp]b4_user_formals[)
{
- if (yystack->yysplitPoint != NULL)
+ if (yystackp->yysplitPoint != YY_NULL)
{
yyGLRState* yys;
int yyn;
- for (yyn = 0, yys = yystack->yytops.yystates[0];
- yys != yystack->yysplitPoint;
- yys = yys->yypred, yyn += 1)
- continue;
- YYCHK (yyresolveStates (yystack->yytops.yystates[0], yyn, yystack
- ]b4_user_args[));
+ for (yyn = 0, yys = yystackp->yytops.yystates[0];
+ yys != yystackp->yysplitPoint;
+ yys = yys->yypred, yyn += 1)
+ continue;
+ YYCHK (yyresolveStates (yystackp->yytops.yystates[0], yyn, yystackp
+ ]b4_user_args[));
}
return yyok;
}
static void
-yycompressStack (yyGLRStack* yystack)
+yycompressStack (yyGLRStack* yystackp)
{
yyGLRState* yyp, *yyq, *yyr;
- if (yystack->yytops.yysize != 1 || yystack->yysplitPoint == NULL)
+ if (yystackp->yytops.yysize != 1 || yystackp->yysplitPoint == YY_NULL)
return;
- for (yyp = yystack->yytops.yystates[0], yyq = yyp->yypred, yyr = NULL;
- yyp != yystack->yysplitPoint;
+ for (yyp = yystackp->yytops.yystates[0], yyq = yyp->yypred, yyr = YY_NULL;
+ yyp != yystackp->yysplitPoint;
yyr = yyp, yyp = yyq, yyq = yyp->yypred)
yyp->yypred = yyr;
- yystack->yyspaceLeft += yystack->yynextFree - yystack->yyitems;
- yystack->yynextFree = ((yyGLRStackItem*) yystack->yysplitPoint) + 1;
- yystack->yyspaceLeft -= yystack->yynextFree - yystack->yyitems;
- yystack->yysplitPoint = NULL;
- yystack->yylastDeleted = NULL;
+ yystackp->yyspaceLeft += yystackp->yynextFree - yystackp->yyitems;
+ yystackp->yynextFree = ((yyGLRStackItem*) yystackp->yysplitPoint) + 1;
+ yystackp->yyspaceLeft -= yystackp->yynextFree - yystackp->yyitems;
+ yystackp->yysplitPoint = YY_NULL;
+ yystackp->yylastDeleted = YY_NULL;
- while (yyr != NULL)
+ while (yyr != YY_NULL)
{
- yystack->yynextFree->yystate = *yyr;
+ yystackp->yynextFree->yystate = *yyr;
yyr = yyr->yypred;
- yystack->yynextFree->yystate.yypred = & yystack->yynextFree[-1].yystate;
- yystack->yytops.yystates[0] = &yystack->yynextFree->yystate;
- yystack->yynextFree += 1;
- yystack->yyspaceLeft -= 1;
+ yystackp->yynextFree->yystate.yypred = &yystackp->yynextFree[-1].yystate;
+ yystackp->yytops.yystates[0] = &yystackp->yynextFree->yystate;
+ yystackp->yynextFree += 1;
+ yystackp->yyspaceLeft -= 1;
}
}
static YYRESULTTAG
-yyprocessOneStack (yyGLRStack* yystack, size_t yyk,
- size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp
- ]b4_pure_formals[)
+yyprocessOneStack (yyGLRStack* yystackp, size_t yyk,
+ size_t yyposn]b4_pure_formals[)
{
int yyaction;
const short int* yyconflicts;
yyRuleNum yyrule;
- yySymbol* const yytokenp = yystack->yytokenp;
- while (yystack->yytops.yystates[yyk] != NULL)
+ while (yystackp->yytops.yystates[yyk] != YY_NULL)
{
- yyStateNum yystate = yystack->yytops.yystates[yyk]->yylrState;
+ yyStateNum yystate = yystackp->yytops.yystates[yyk]->yylrState;
YYDPRINTF ((stderr, "Stack %lu Entering state %d\n",
- (unsigned long int) yyk, yystate));
+ (unsigned long int) yyk, yystate));
YYASSERT (yystate != YYFINAL);
if (yyisDefaultedState (yystate))
- {
- yyrule = yydefaultAction (yystate);
- if (yyrule == 0)
- {
- YYDPRINTF ((stderr, "Stack %lu dies.\n",
- (unsigned long int) yyk));
- yymarkStackDeleted (yystack, yyk);
- return yyok;
- }
- YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse]b4_user_args[));
- }
+ {
+ yyrule = yydefaultAction (yystate);
+ if (yyrule == 0)
+ {
+ YYDPRINTF ((stderr, "Stack %lu dies.\n",
+ (unsigned long int) yyk));
+ yymarkStackDeleted (yystackp, yyk);
+ return yyok;
+ }
+ YYCHK (yyglrReduce (yystackp, yyk, yyrule, yyfalse]b4_user_args[));
+ }
else
- {
- if (*yytokenp == YYEMPTY)
- {
- YYDPRINTF ((stderr, "Reading a token: "));
- yychar = YYLEX;
- *yytokenp = YYTRANSLATE (yychar);
- YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);
- }
- yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts);
-
- while (*yyconflicts != 0)
- {
- size_t yynewStack = yysplitStack (yystack, yyk);
- YYDPRINTF ((stderr, "Splitting off stack %lu from %lu.\n",
- (unsigned long int) yynewStack,
- (unsigned long int) yyk));
- YYCHK (yyglrReduce (yystack, yynewStack,
- *yyconflicts, yyfalse]b4_user_args[));
- YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn,
- yylvalp, yyllocp]b4_pure_args[));
- yyconflicts += 1;
- }
-
- if (yyisShiftAction (yyaction))
- {
- YYDPRINTF ((stderr, "On stack %lu, ", (unsigned long int) yyk));
- YY_SYMBOL_PRINT ("shifting", *yytokenp, yylvalp, yyllocp);
- yyglrShift (yystack, yyk, yyaction, yyposn+1,
- *yylvalp, yyllocp);
- YYDPRINTF ((stderr, "Stack %lu now in state #%d\n",
- (unsigned long int) yyk,
- yystack->yytops.yystates[yyk]->yylrState));
- break;
- }
- else if (yyisErrorAction (yyaction))
- {
- YYDPRINTF ((stderr, "Stack %lu dies.\n",
- (unsigned long int) yyk));
- yymarkStackDeleted (yystack, yyk);
- break;
- }
- else
- YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse]b4_user_args[));
- }
+ {
+ yySymbol yytoken;
+ yystackp->yytops.yylookaheadNeeds[yyk] = yytrue;
+ if (yychar == YYEMPTY)
+ {
+ YYDPRINTF ((stderr, "Reading a token: "));
+ yychar = YYLEX;
+ }
+
+ if (yychar <= YYEOF)
+ {
+ yychar = yytoken = YYEOF;
+ YYDPRINTF ((stderr, "Now at end of input.\n"));
+ }
+ else
+ {
+ yytoken = YYTRANSLATE (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ }
+
+ yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
+
+ while (*yyconflicts != 0)
+ {
+ size_t yynewStack = yysplitStack (yystackp, yyk);
+ YYDPRINTF ((stderr, "Splitting off stack %lu from %lu.\n",
+ (unsigned long int) yynewStack,
+ (unsigned long int) yyk));
+ YYCHK (yyglrReduce (yystackp, yynewStack,
+ *yyconflicts, yyfalse]b4_user_args[));
+ YYCHK (yyprocessOneStack (yystackp, yynewStack,
+ yyposn]b4_pure_args[));
+ yyconflicts += 1;
+ }
+
+ if (yyisShiftAction (yyaction))
+ break;
+ else if (yyisErrorAction (yyaction))
+ {
+ YYDPRINTF ((stderr, "Stack %lu dies.\n",
+ (unsigned long int) yyk));
+ yymarkStackDeleted (yystackp, yyk);
+ break;
+ }
+ else
+ YYCHK (yyglrReduce (yystackp, yyk, -yyaction,
+ yyfalse]b4_user_args[));
+ }
}
return yyok;
}
-static void
-yyreportSyntaxError (yyGLRStack* yystack,
- YYSTYPE* yylvalp, YYLTYPE* yyllocp]b4_user_formals[)
+/*ARGSUSED*/ static void
+yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
{
- /* `Unused' warnings. */
- (void) yylvalp;
- (void) yyllocp;
+ if (yystackp->yyerrState != 0)
+ return;
+#if ! YYERROR_VERBOSE
+ yyerror (]b4_lyyerror_args[YY_("syntax error"));
+#else
+ yySymbol yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
+ size_t yysize0 = yytnamerr (YY_NULL, yytokenName (yytoken));
+ size_t yysize = yysize0;
+ size_t yysize1;
+ yybool yysize_overflow = yyfalse;
+ char* yymsg = YY_NULL;
+ 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:
+ - 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.
+ - 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[yystackp->yytops.yystates[0]->yylrState];
+ yyarg[yycount++] = yytokenName (yytoken);
+ if (!yypact_value_is_default (yyn))
+ {
+ /* 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;
+ 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++] = yytokenName (yyx);
+ yysize1 = yysize + yytnamerr (YY_NULL, yytokenName (yyx));
+ yysize_overflow |= yysize1 < yysize;
+ yysize = yysize1;
+ }
+ }
+ }
- if (yystack->yyerrState == 0)
+ switch (yycount)
{
-#if YYERROR_VERBOSE
- yySymbol* const yytokenp = yystack->yytokenp;
- int yyn;
- yyn = yypact[yystack->yytops.yystates[0]->yylrState];
- if (YYPACT_NINF < yyn && yyn < YYLAST)
- {
- size_t yysize0 = yytnamerr (NULL, yytokenName (*yytokenp));
- size_t yysize = yysize0;
- size_t yysize1;
- yybool yysize_overflow = yyfalse;
- char* yymsg = NULL;
- enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
- char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
- int yyx;
- char *yyfmt;
- char const *yyf;
- static char const yyunexpected[] = "syntax error, unexpected %s";
- static char const yyexpecting[] = ", expecting %s";
- static char const yyor[] = " or %s";
- char yyformat[sizeof yyunexpected
- + sizeof yyexpecting - 1
- + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
- * (sizeof yyor - 1))];
- char const *yyprefix = yyexpecting;
-
- /* 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 = 1;
-
- yyarg[0] = yytokenName (*yytokenp);
- yyfmt = yystpcpy (yyformat, yyunexpected);
-
- for (yyx = yyxbegin; yyx < yyxend; ++yyx)
- if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
- {
- if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
- {
- yycount = 1;
- yysize = yysize0;
- yyformat[sizeof yyunexpected - 1] = '\0';
- break;
- }
- yyarg[yycount++] = yytokenName (yyx);
- yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx));
- yysize_overflow |= yysize1 < yysize;
- yysize = yysize1;
- yyfmt = yystpcpy (yyfmt, yyprefix);
- yyprefix = yyor;
- }
-
- yyf = YY_(yyformat);
- yysize1 = yysize + strlen (yyf);
- yysize_overflow |= yysize1 < yysize;
- yysize = yysize1;
-
- if (!yysize_overflow)
- yymsg = (char *) YYMALLOC (yysize);
-
- if (yymsg)
- {
- char *yyp = yymsg;
- int yyi = 0;
- while ((*yyp = *yyf))
- {
- if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
- {
- yyp += yytnamerr (yyp, yyarg[yyi++]);
- yyf += 2;
- }
- else
- {
- yyp++;
- yyf++;
- }
- }
- yyerror (]b4_lyyerror_args[yymsg);
- YYFREE (yymsg);
- }
- else
- {
- yyerror (]b4_lyyerror_args[YY_("syntax error"));
- yyMemoryExhausted (yystack);
- }
- }
- else
-#endif /* YYERROR_VERBOSE */
- yyerror (]b4_lyyerror_args[YY_("syntax error"));
- yynerrs += 1;
+#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 + strlen (yyformat);
+ yysize_overflow |= yysize1 < yysize;
+ yysize = yysize1;
+
+ if (!yysize_overflow)
+ yymsg = (char *) YYMALLOC (yysize);
+
+ if (yymsg)
+ {
+ char *yyp = yymsg;
+ int yyi = 0;
+ while ((*yyp = *yyformat))
+ {
+ if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
+ {
+ yyp += yytnamerr (yyp, yyarg[yyi++]);
+ yyformat += 2;
+ }
+ else
+ {
+ yyp++;
+ yyformat++;
+ }
+ }
+ yyerror (]b4_lyyerror_args[yymsg);
+ YYFREE (yymsg);
+ }
+ else
+ {
+ yyerror (]b4_lyyerror_args[YY_("syntax error"));
+ yyMemoryExhausted (yystackp);
}
+#endif /* YYERROR_VERBOSE */
+ yynerrs += 1;
}
-/* Recover from a syntax error on YYSTACK, assuming that YYTOKENP,
- YYLVALP, and YYLLOCP point to the syntactic category, semantic
- value, and location of the look-ahead. */
-static void
-yyrecoverSyntaxError (yyGLRStack* yystack,
- YYSTYPE* yylvalp,
- YYLTYPE* YYOPTIONAL_LOC (yyllocp)
- ]b4_user_formals[)
+/* Recover from a syntax error on *YYSTACKP, assuming that *YYSTACKP->YYTOKENP,
+ yylval, and yylloc are the syntactic category, semantic value, and location
+ of the lookahead. */
+/*ARGSUSED*/ static void
+yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
{
- yySymbol* const yytokenp = yystack->yytokenp;
size_t yyk;
int yyj;
- if (yystack->yyerrState == 3)
+ if (yystackp->yyerrState == 3)
/* We just shifted the error token and (perhaps) took some
reductions. Skip tokens until we can proceed. */
- while (yytrue)
+ while (YYID (yytrue))
{
- if (*yytokenp == YYEOF)
- yyFail (yystack][]b4_lpure_args[, NULL);
- if (*yytokenp != YYEMPTY)
- {]b4_location_if([[
- /* We throw away the lookahead, but the error range
- of the shifted error token must take it into account. */
- yyGLRState *yys = yystack->yytops.yystates[0];
- yyGLRStackItem yyerror_range[3];
- yyerror_range[1].yystate.yyloc = yys->yyloc;
- yyerror_range[2].yystate.yyloc = *yyllocp;
- YYLLOC_DEFAULT (yys->yyloc, yyerror_range, 2);]])[
- yydestruct ("Error: discarding",
- *yytokenp, yylvalp]b4_location_if([, yyllocp])[);
- }
- YYDPRINTF ((stderr, "Reading a token: "));
- yychar = YYLEX;
- *yytokenp = YYTRANSLATE (yychar);
- YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);
- yyj = yypact[yystack->yytops.yystates[0]->yylrState];
- if (yyis_pact_ninf (yyj))
- return;
- yyj += *yytokenp;
- if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != *yytokenp)
- {
- if (yydefact[yystack->yytops.yystates[0]->yylrState] != 0)
- return;
- }
- else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj]))
- return;
+ yySymbol yytoken;
+ if (yychar == YYEOF)
+ yyFail (yystackp][]b4_lpure_args[, YY_NULL);
+ if (yychar != YYEMPTY)
+ {]b4_locations_if([[
+ /* We throw away the lookahead, but the error range
+ of the shifted error token must take it into account. */
+ yyGLRState *yys = yystackp->yytops.yystates[0];
+ yyGLRStackItem yyerror_range[3];
+ yyerror_range[1].yystate.yyloc = yys->yyloc;
+ yyerror_range[2].yystate.yyloc = yylloc;
+ YYLLOC_DEFAULT ((yys->yyloc), yyerror_range, 2);]])[
+ yytoken = YYTRANSLATE (yychar);
+ yydestruct ("Error: discarding",
+ yytoken, &yylval]b4_locuser_args([&yylloc])[);
+ }
+ YYDPRINTF ((stderr, "Reading a token: "));
+ yychar = YYLEX;
+ if (yychar <= YYEOF)
+ {
+ yychar = yytoken = YYEOF;
+ YYDPRINTF ((stderr, "Now at end of input.\n"));
+ }
+ else
+ {
+ yytoken = YYTRANSLATE (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ }
+ yyj = yypact[yystackp->yytops.yystates[0]->yylrState];
+ if (yypact_value_is_default (yyj))
+ return;
+ yyj += yytoken;
+ if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != yytoken)
+ {
+ if (yydefact[yystackp->yytops.yystates[0]->yylrState] != 0)
+ return;
+ }
+ else if (! yytable_value_is_error (yytable[yyj]))
+ return;
}
/* Reduce to one stack. */
- for (yyk = 0; yyk < yystack->yytops.yysize; yyk += 1)
- if (yystack->yytops.yystates[yyk] != NULL)
+ for (yyk = 0; yyk < yystackp->yytops.yysize; yyk += 1)
+ if (yystackp->yytops.yystates[yyk] != YY_NULL)
break;
- if (yyk >= yystack->yytops.yysize)
- yyFail (yystack][]b4_lpure_args[, NULL);
- for (yyk += 1; yyk < yystack->yytops.yysize; yyk += 1)
- yymarkStackDeleted (yystack, yyk);
- yyremoveDeletes (yystack);
- yycompressStack (yystack);
-
- /* Now pop stack until we find a state that shifts the error token. */
- yystack->yyerrState = 3;
- while (yystack->yytops.yystates[0] != NULL)
+ if (yyk >= yystackp->yytops.yysize)
+ yyFail (yystackp][]b4_lpure_args[, YY_NULL);
+ for (yyk += 1; yyk < yystackp->yytops.yysize; yyk += 1)
+ yymarkStackDeleted (yystackp, yyk);
+ yyremoveDeletes (yystackp);
+ yycompressStack (yystackp);
+
+ /* Now pop stack until we find a state that shifts the error token. */
+ yystackp->yyerrState = 3;
+ while (yystackp->yytops.yystates[0] != YY_NULL)
{
- yyGLRState *yys = yystack->yytops.yystates[0];
+ yyGLRState *yys = yystackp->yytops.yystates[0];
yyj = yypact[yys->yylrState];
- if (! yyis_pact_ninf (yyj))
- {
- yyj += YYTERROR;
- if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR
- && yyisShiftAction (yytable[yyj]))
- {
- /* Shift the error token having adjusted its location. */
- YYLTYPE yyerrloc;]b4_location_if([[
- yystack->yyerror_range[2].yystate.yyloc = *yyllocp;
- YYLLOC_DEFAULT (yyerrloc, yystack->yyerror_range, 2);]])[
- YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]],
- yylvalp, &yyerrloc);
- yyglrShift (yystack, 0, yytable[yyj],
- yys->yyposn, *yylvalp, &yyerrloc);
- yys = yystack->yytops.yystates[0];
- break;
- }
- }
-]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
- yydestruct ("Error: popping",
- yystos[yys->yylrState],
- &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
- yystack->yytops.yystates[0] = yys->yypred;
- yystack->yynextFree -= 1;
- yystack->yyspaceLeft += 1;
+ if (! yypact_value_is_default (yyj))
+ {
+ yyj += YYTERROR;
+ if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR
+ && yyisShiftAction (yytable[yyj]))
+ {
+ /* Shift the error token. */]b4_locations_if([[
+ /* First adjust its location.*/
+ YYLTYPE yyerrloc;
+ yystackp->yyerror_range[2].yystate.yyloc = yylloc;
+ YYLLOC_DEFAULT (yyerrloc, (yystackp->yyerror_range), 2);]])[
+ YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]],
+ &yylval, &yyerrloc);
+ yyglrShift (yystackp, 0, yytable[yyj],
+ yys->yyposn, &yylval]b4_locations_if([, &yyerrloc])[);
+ yys = yystackp->yytops.yystates[0];
+ break;
+ }
+ }]b4_locations_if([[
+ yystackp->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
+ if (yys->yypred != YY_NULL)
+ yydestroyGLRState ("Error: popping", yys]b4_user_args[);
+ yystackp->yytops.yystates[0] = yys->yypred;
+ yystackp->yynextFree -= 1;
+ yystackp->yyspaceLeft += 1;
}
- if (yystack->yytops.yystates[0] == NULL)
- yyFail (yystack][]b4_lpure_args[, NULL);
+ if (yystackp->yytops.yystates[0] == YY_NULL)
+ yyFail (yystackp][]b4_lpure_args[, YY_NULL);
}
-#define YYCHK1(YYE) \
- do { \
- switch (YYE) { \
- default: \
- break; \
- case yyabort: \
- goto yyabortlab; \
- case yyaccept: \
- goto yyacceptlab; \
- case yyerr: \
- goto yyuser_error; \
- } \
- } while (0)
+#define YYCHK1(YYE) \
+ do { \
+ switch (YYE) { \
+ case yyok: \
+ break; \
+ case yyabort: \
+ goto yyabortlab; \
+ case yyaccept: \
+ goto yyacceptlab; \
+ case yyerr: \
+ goto yyuser_error; \
+ default: \
+ goto yybuglab; \
+ } \
+ } while (YYID (0))
/*----------.
]b4_c_ansi_function_def([yyparse], [int], b4_parse_param)[
{
int yyresult;
- yySymbol yytoken;
yyGLRStack yystack;
+ yyGLRStack* const yystackp = &yystack;
size_t yyposn;
-]b4_pure_if(
-[
- YYSTYPE yylval;
- YYLTYPE yylloc;
- #undef yychar
- #define yychar (yystack.yyrawchar)
-])[
-
- YYSTYPE* const yylvalp = &yylval;
- YYLTYPE* const yyllocp = &yylloc;
YYDPRINTF ((stderr, "Starting parse\n"));
- yytoken = YYEMPTY;
+ yychar = YYEMPTY;
yylval = yyval_default;
-]b4_location_if([
-#if YYLTYPE_IS_TRIVIAL
- yylloc.first_line = yylloc.last_line = 1;
- yylloc.first_column = yylloc.last_column = 0;
+]b4_locations_if([
+#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
+ 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], [yylloc])dnl
m4_pushdef([b4_dollar_dollar], [yylval])dnl
- /* User initialization code. */
- b4_initial_action
+ /* User initialization code. */
+ b4_user_initial_action
m4_popdef([b4_dollar_dollar])dnl
-m4_popdef([b4_at_dollar])dnl
-/* Line __line__ of glr.c. */
-b4_syncline([@oline@], [@ofile@])])dnl
+m4_popdef([b4_at_dollar])])dnl
[
- if (! yyinitGLRStack (&yystack, YYINITDEPTH))
+ if (! yyinitGLRStack (yystackp, YYINITDEPTH))
goto yyexhaustedlab;
- switch (setjmp (yystack.yyexception_buffer))
+ switch (YYSETJMP (yystack.yyexception_buffer))
{
+ case 0: break;
case 1: goto yyabortlab;
case 2: goto yyexhaustedlab;
+ default: goto yybuglab;
}
- yystack.yytokenp = &yytoken;
- yyglrShift (&yystack, 0, 0, 0, yylval, &yylloc);
+ yyglrShift (&yystack, 0, 0, 0, &yylval]b4_locations_if([, &yylloc])[);
yyposn = 0;
- while (yytrue)
+ while (YYID (yytrue))
{
/* For efficiency, we have two loops, the first of which is
- specialized to deterministic operation (single stack, no
- potential ambiguity). */
+ specialized to deterministic operation (single stack, no
+ potential ambiguity). */
/* Standard mode */
- while (yytrue)
- {
- yyRuleNum yyrule;
- int yyaction;
- const short int* yyconflicts;
+ while (YYID (yytrue))
+ {
+ yyRuleNum yyrule;
+ int yyaction;
+ const short int* yyconflicts;
- yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;
+ yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;
YYDPRINTF ((stderr, "Entering state %d\n", yystate));
- if (yystate == YYFINAL)
- goto yyacceptlab;
- if (yyisDefaultedState (yystate))
- {
- yyrule = yydefaultAction (yystate);
- if (yyrule == 0)
- {
-]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
- yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
- goto yyuser_error;
- }
- YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_user_args[));
- }
- else
- {
- if (yytoken == YYEMPTY)
- {
- YYDPRINTF ((stderr, "Reading a token: "));
- yychar = YYLEX;
- yytoken = YYTRANSLATE (yychar);
- YY_SYMBOL_PRINT ("Next token is", yytoken, yylvalp, yyllocp);
- }
- yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
- if (*yyconflicts != 0)
- break;
- if (yyisShiftAction (yyaction))
- {
- YY_SYMBOL_PRINT ("Shifting", yytoken, yylvalp, yyllocp);
- if (yytoken != YYEOF)
- yytoken = YYEMPTY;
- yyposn += 1;
- yyglrShift (&yystack, 0, yyaction, yyposn, yylval, yyllocp);
- if (0 < yystack.yyerrState)
- yystack.yyerrState -= 1;
- }
- else if (yyisErrorAction (yyaction))
- {
-]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
- yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
- goto yyuser_error;
- }
- else
- YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_user_args[));
- }
- }
-
- while (yytrue)
- {
- size_t yys;
- size_t yyn = yystack.yytops.yysize;
- for (yys = 0; yys < yyn; yys += 1)
- YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn,
- yylvalp, yyllocp]b4_lpure_args[));
- yytoken = YYEMPTY;
- yyposn += 1;
- yyremoveDeletes (&yystack);
- if (yystack.yytops.yysize == 0)
- {
- yyundeleteLastStack (&yystack);
- if (yystack.yytops.yysize == 0)
- yyFail (&yystack][]b4_lpure_args[, YY_("syntax error"));
- YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
- YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
-]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
- yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
- goto yyuser_error;
- }
- else if (yystack.yytops.yysize == 1)
- {
- YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
- YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
- yycompressStack (&yystack);
- break;
- }
- }
+ if (yystate == YYFINAL)
+ goto yyacceptlab;
+ if (yyisDefaultedState (yystate))
+ {
+ yyrule = yydefaultAction (yystate);
+ if (yyrule == 0)
+ {
+]b4_locations_if([[ yystack.yyerror_range[1].yystate.yyloc = yylloc;]])[
+ yyreportSyntaxError (&yystack]b4_user_args[);
+ goto yyuser_error;
+ }
+ YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_user_args[));
+ }
+ else
+ {
+ yySymbol yytoken;
+ if (yychar == YYEMPTY)
+ {
+ YYDPRINTF ((stderr, "Reading a token: "));
+ yychar = YYLEX;
+ }
+
+ if (yychar <= YYEOF)
+ {
+ yychar = yytoken = YYEOF;
+ YYDPRINTF ((stderr, "Now at end of input.\n"));
+ }
+ else
+ {
+ yytoken = YYTRANSLATE (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ }
+
+ yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
+ if (*yyconflicts != 0)
+ break;
+ if (yyisShiftAction (yyaction))
+ {
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+ yychar = YYEMPTY;
+ yyposn += 1;
+ yyglrShift (&yystack, 0, yyaction, yyposn, &yylval]b4_locations_if([, &yylloc])[);
+ if (0 < yystack.yyerrState)
+ yystack.yyerrState -= 1;
+ }
+ else if (yyisErrorAction (yyaction))
+ {
+]b4_locations_if([[ yystack.yyerror_range[1].yystate.yyloc = yylloc;]])[
+ yyreportSyntaxError (&yystack]b4_user_args[);
+ goto yyuser_error;
+ }
+ else
+ YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_user_args[));
+ }
+ }
+
+ while (YYID (yytrue))
+ {
+ yySymbol yytoken_to_shift;
+ size_t yys;
+
+ for (yys = 0; yys < yystack.yytops.yysize; yys += 1)
+ yystackp->yytops.yylookaheadNeeds[yys] = yychar != YYEMPTY;
+
+ /* yyprocessOneStack returns one of three things:
+
+ - An error flag. If the caller is yyprocessOneStack, it
+ immediately returns as well. When the caller is finally
+ yyparse, it jumps to an error label via YYCHK1.
+
+ - yyok, but yyprocessOneStack has invoked yymarkStackDeleted
+ (&yystack, yys), which sets the top state of yys to NULL. Thus,
+ yyparse's following invocation of yyremoveDeletes will remove
+ the stack.
+
+ - yyok, when ready to shift a token.
+
+ Except in the first case, yyparse will invoke yyremoveDeletes and
+ then shift the next token onto all remaining stacks. This
+ synchronization of the shift (that is, after all preceding
+ reductions on all stacks) helps prevent double destructor calls
+ on yylval in the event of memory exhaustion. */
+
+ for (yys = 0; yys < yystack.yytops.yysize; yys += 1)
+ YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn]b4_lpure_args[));
+ yyremoveDeletes (&yystack);
+ if (yystack.yytops.yysize == 0)
+ {
+ yyundeleteLastStack (&yystack);
+ if (yystack.yytops.yysize == 0)
+ yyFail (&yystack][]b4_lpure_args[, YY_("syntax error"));
+ YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
+ YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
+]b4_locations_if([[ yystack.yyerror_range[1].yystate.yyloc = yylloc;]])[
+ yyreportSyntaxError (&yystack]b4_user_args[);
+ goto yyuser_error;
+ }
+
+ /* If any yyglrShift call fails, it will fail after shifting. Thus,
+ a copy of yylval will already be on stack 0 in the event of a
+ failure in the following loop. Thus, yychar is set to YYEMPTY
+ before the loop to make sure the user destructor for yylval isn't
+ called twice. */
+ yytoken_to_shift = YYTRANSLATE (yychar);
+ yychar = YYEMPTY;
+ yyposn += 1;
+ for (yys = 0; yys < yystack.yytops.yysize; yys += 1)
+ {
+ int yyaction;
+ const short int* yyconflicts;
+ yyStateNum yystate = yystack.yytops.yystates[yys]->yylrState;
+ yygetLRActions (yystate, yytoken_to_shift, &yyaction,
+ &yyconflicts);
+ /* Note that yyconflicts were handled by yyprocessOneStack. */
+ YYDPRINTF ((stderr, "On stack %lu, ", (unsigned long int) yys));
+ YY_SYMBOL_PRINT ("shifting", yytoken_to_shift, &yylval, &yylloc);
+ yyglrShift (&yystack, yys, yyaction, yyposn,
+ &yylval]b4_locations_if([, &yylloc])[);
+ YYDPRINTF ((stderr, "Stack %lu now in state #%d\n",
+ (unsigned long int) yys,
+ yystack.yytops.yystates[yys]->yylrState));
+ }
+
+ if (yystack.yytops.yysize == 1)
+ {
+ YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
+ YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
+ yycompressStack (&yystack);
+ break;
+ }
+ }
continue;
yyuser_error:
- yyrecoverSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
+ yyrecoverSyntaxError (&yystack]b4_user_args[);
yyposn = yystack.yytops.yystates[0]->yyposn;
}
yyresult = 0;
goto yyreturn;
+ yybuglab:
+ YYASSERT (yyfalse);
+ goto yyabortlab;
+
yyabortlab:
yyresult = 1;
goto yyreturn;
yyexhaustedlab:
yyerror (]b4_lyyerror_args[YY_("memory exhausted"));
yyresult = 2;
- /* Fall through. */
+ goto yyreturn;
yyreturn:
- if (yytoken != YYEOF && yytoken != YYEMPTY)
- yydestruct ("Error: discarding lookahead",
- yytoken, yylvalp]b4_location_if([, yyllocp])[);
+ if (yychar != YYEMPTY)
+ yydestruct ("Cleanup: discarding lookahead",
+ YYTRANSLATE (yychar), &yylval]b4_locuser_args([&yylloc])[);
/* If the stack is well-formed, pop the stack until it is empty,
destroying its entries as we go. But free the stack regardless
{
yyGLRState** yystates = yystack.yytops.yystates;
if (yystates)
- while (yystates[0])
- {
- yyGLRState *yys = yystates[0];
-]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]
-)[ yydestruct ("Error: popping",
- yystos[yys->yylrState],
- &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
- yystates[0] = yys->yypred;
- yystack.yynextFree -= 1;
- yystack.yyspaceLeft += 1;
- }
+ {
+ size_t yysize = yystack.yytops.yysize;
+ size_t yyk;
+ for (yyk = 0; yyk < yysize; yyk += 1)
+ if (yystates[yyk])
+ {
+ while (yystates[yyk])
+ {
+ yyGLRState *yys = yystates[yyk];
+]b4_locations_if([[ yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]
+)[ if (yys->yypred != YY_NULL)
+ yydestroyGLRState ("Cleanup: popping", yys]b4_user_args[);
+ yystates[yyk] = yys->yypred;
+ yystack.yynextFree -= 1;
+ yystack.yyspaceLeft += 1;
+ }
+ break;
+ }
+ }
yyfreeGLRStack (&yystack);
}
- return yyresult;
+ /* Make sure YYID is used. */
+ return YYID (yyresult);
}
/* DEBUGGING ONLY */
-#ifdef YYDEBUG
-static void yypstack (yyGLRStack* yystack, size_t yyk)
+#if YYDEBUG
+static void yypstack (yyGLRStack* yystackp, size_t yyk)
__attribute__ ((__unused__));
-static void yypdumpstack (yyGLRStack* yystack) __attribute__ ((__unused__));
+static void yypdumpstack (yyGLRStack* yystackp) __attribute__ ((__unused__));
static void
yy_yypstack (yyGLRState* yys)
if (yys->yypred)
{
yy_yypstack (yys->yypred);
- fprintf (stderr, " -> ");
+ YYFPRINTF (stderr, " -> ");
}
- fprintf (stderr, "%d@@%lu", yys->yylrState, (unsigned long int) yys->yyposn);
+ YYFPRINTF (stderr, "%d@@%lu", yys->yylrState,
+ (unsigned long int) yys->yyposn);
}
static void
yypstates (yyGLRState* yyst)
{
- if (yyst == NULL)
- fprintf (stderr, "<null>");
+ if (yyst == YY_NULL)
+ YYFPRINTF (stderr, "<null>");
else
yy_yypstack (yyst);
- fprintf (stderr, "\n");
+ YYFPRINTF (stderr, "\n");
}
static void
-yypstack (yyGLRStack* yystack, size_t yyk)
+yypstack (yyGLRStack* yystackp, size_t yyk)
{
- yypstates (yystack->yytops.yystates[yyk]);
+ yypstates (yystackp->yytops.yystates[yyk]);
}
-#define YYINDEX(YYX) \
- ((YYX) == NULL ? -1 : (yyGLRStackItem*) (YYX) - yystack->yyitems)
+#define YYINDEX(YYX) \
+ ((YYX) == YY_NULL ? -1 : (yyGLRStackItem*) (YYX) - yystackp->yyitems)
static void
-yypdumpstack (yyGLRStack* yystack)
+yypdumpstack (yyGLRStack* yystackp)
{
yyGLRStackItem* yyp;
size_t yyi;
- for (yyp = yystack->yyitems; yyp < yystack->yynextFree; yyp += 1)
+ for (yyp = yystackp->yyitems; yyp < yystackp->yynextFree; yyp += 1)
{
- fprintf (stderr, "%3lu. ", (unsigned long int) (yyp - yystack->yyitems));
+ YYFPRINTF (stderr, "%3lu. ",
+ (unsigned long int) (yyp - yystackp->yyitems));
if (*(yybool *) yyp)
- {
- fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
- yyp->yystate.yyresolved, yyp->yystate.yylrState,
- (unsigned long int) yyp->yystate.yyposn,
- (long int) YYINDEX (yyp->yystate.yypred));
- if (! yyp->yystate.yyresolved)
- fprintf (stderr, ", firstVal: %ld",
- (long int) YYINDEX (yyp->yystate.yysemantics.yyfirstVal));
- }
+ {
+ YYFPRINTF (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
+ yyp->yystate.yyresolved, yyp->yystate.yylrState,
+ (unsigned long int) yyp->yystate.yyposn,
+ (long int) YYINDEX (yyp->yystate.yypred));
+ if (! yyp->yystate.yyresolved)
+ YYFPRINTF (stderr, ", firstVal: %ld",
+ (long int) YYINDEX (yyp->yystate
+ .yysemantics.yyfirstVal));
+ }
else
- {
- fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld",
- yyp->yyoption.yyrule,
- (long int) YYINDEX (yyp->yyoption.yystate),
- (long int) YYINDEX (yyp->yyoption.yynext));
- }
- fprintf (stderr, "\n");
+ {
+ YYFPRINTF (stderr, "Option. rule: %d, state: %ld, next: %ld",
+ yyp->yyoption.yyrule - 1,
+ (long int) YYINDEX (yyp->yyoption.yystate),
+ (long int) YYINDEX (yyp->yyoption.yynext));
+ }
+ YYFPRINTF (stderr, "\n");
}
- fprintf (stderr, "Tops:");
- for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
- fprintf (stderr, "%lu: %ld; ", (unsigned long int) yyi,
- (long int) YYINDEX (yystack->yytops.yystates[yyi]));
- fprintf (stderr, "\n");
+ YYFPRINTF (stderr, "Tops:");
+ for (yyi = 0; yyi < yystackp->yytops.yysize; yyi += 1)
+ YYFPRINTF (stderr, "%lu: %ld; ", (unsigned long int) yyi,
+ (long int) YYINDEX (yystackp->yytops.yystates[yyi]));
+ YYFPRINTF (stderr, "\n");
}
#endif
]
b4_epilogue
-m4_if(b4_defines_flag, 0, [],
-[@output @output_header_name@
-b4_copyright([Skeleton parser for GLR parsing with Bison],
- [2002, 2003, 2004, 2005])
-
-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 glr.c. */
-b4_syncline([@oline@], [@ofile@])],
-[typedef int YYSTYPE;])
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
-#endif
+dnl
+dnl glr.cc produces its own header.
+dnl
+m4_if(b4_skeleton, ["glr.c"],
+[b4_defines_if(
+[@output(b4_spec_defines_file@)@
+b4_copyright([Skeleton interface for Bison GLR parsers in C],
+ [2002-2012])
-b4_pure_if([],
-[extern YYSTYPE b4_prefix[]lval;])
+b4_shared_declarations
-#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
-typedef struct YYLTYPE
-{
-b4_location_if([
- int first_line;
- int first_column;
- int last_line;
- int last_column;
-],[
- char yydummy;
-])
-} YYLTYPE;
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif
+b4_pure_if([],
+[[extern YYSTYPE ]b4_prefix[lval;]])
-b4_location_if([b4_pure_if([],
-[extern YYLTYPE b4_prefix[]lloc;])
-])
+b4_locations_if([b4_pure_if([],
+[extern YYLTYPE ]b4_prefix[lloc;])
])
+])])
+m4_divert_pop(0)
projects / bison.git / blobdiff