# Yacc compatible skeleton for Bison
# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008 Free Software Foundation, Inc.
+# 2007, 2008, 2009 Free Software Foundation, Inc.
m4_pushdef([b4_copyright_years],
-[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008])
+ [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+ 2007, 2008, 2009])
# 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
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-# Check the value of %define api.push_pull.
-b4_percent_define_default([[api.push_pull]], [[pull]])
-b4_percent_define_check_values([[[[api.push_pull]],
- [[pull]], [[push]], [[both]]]])
+# Check the value of %define api.push-pull.
+b4_percent_define_default([[api.push-pull]], [[pull]])
+b4_percent_define_check_values([[[[api.push-pull]],
+ [[pull]], [[push]], [[both]]]])
b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
-m4_case(b4_percent_define_get([[api.push_pull]]),
+m4_case(b4_percent_define_get([[api.push-pull]]),
[pull], [m4_define([b4_push_flag], [[0]])],
[push], [m4_define([b4_pull_flag], [[0]])])
[(yylsp@{b4_subtract([$2], [$1])@})])
+## ------------------ ##
+## Parser variables. ##
+## ------------------ ##
+
+# b4_declare_scanner_communication_variables
+# ------------------------------------------
+# Declare the variables that are global, or local to YYPARSE if
+# pure-parser.
+m4_define([b4_declare_scanner_communication_variables], [[
+/* The lookahead symbol. */
+int yychar;
+
+/* The semantic value of the lookahead symbol. */
+YYSTYPE yylval;]b4_locations_if([[
+
+/* Location data for the lookahead symbol. */
+YYLTYPE yylloc;]])b4_pure_if([], [[
+
+/* Number of syntax errors so far. */
+int yynerrs;]])])
+
+
+# b4_declare_parser_state_variables
+# ---------------------------------
+# Declare all the variables that are needed to maintain the parser state
+# between calls to yypush_parse.
+m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
+ /* Number of syntax errors so far. */
+ int yynerrs;
+]])[
+ int yystate;
+ /* Number of tokens to shift before error messages enabled. */
+ int yyerrstatus;
+
+ /* The stacks and their tools:
+ `yyss': related to states.
+ `yyvs': related to semantic values.]b4_locations_if([[
+ `yyls': related to locations.]])[
+
+ Refer to the stacks thru separate pointers, to allow yyoverflow
+ to reallocate them elsewhere. */
+
+ /* The state stack. */
+ yytype_int16 yyssa[YYINITDEPTH];
+ yytype_int16 *yyss;
+ yytype_int16 *yyssp;
+
+ /* The semantic value stack. */
+ YYSTYPE yyvsa[YYINITDEPTH];
+ YYSTYPE *yyvs;
+ YYSTYPE *yyvsp;]b4_locations_if([[
+
+ /* The location stack. */
+ YYLTYPE yylsa[YYINITDEPTH];
+ YYLTYPE *yyls;
+ YYLTYPE *yylsp;
+
+ /* The locations where the error started and ended. */
+ YYLTYPE yyerror_range[2];]])[
+
+ YYSIZE_T yystacksize;]])
+
## --------------------------------------------------------- ##
## Defining symbol actions, e.g., printers and destructors. ##
m4_changecom()
m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
-b4_copyright([Implementation for Bison's Yacc-like parsers in C])dnl'
-[
+b4_copyright([Implementation for Bison's Yacc-like parsers in C])[
/* C LALR(1) parser skeleton written by Richard Stallman, by
simplifying the original so-called "semantic" parser. */
]b4_identification
b4_percent_code_get([[top]])[]dnl
m4_if(b4_prefix, [yy], [],
-[[/* Substitute the variable and function names. */
-]b4_pull_if([[#define yyparse ]b4_prefix[parse
-]])b4_push_if([[#define yypush_parse ]b4_prefix[push_parse
-]b4_pull_if([[#define yypull_parse ]b4_prefix[pull_parse
-]])[#define yypstate_new ]b4_prefix[pstate_new
+[[/* Substitute the variable and function names. */]b4_pull_if([[
+#define yyparse ]b4_prefix[parse]])b4_push_if([[
+#define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
+#define yypull_parse ]b4_prefix[pull_parse]])[
+#define yypstate_new ]b4_prefix[pstate_new
#define yypstate_delete ]b4_prefix[pstate_delete
-#define yypstate ]b4_prefix[pstate
-]])[#define yylex ]b4_prefix[lex
+#define yypstate ]b4_prefix[pstate]])[
+#define yylex ]b4_prefix[lex
#define yyerror ]b4_prefix[error
#define yylval ]b4_prefix[lval
#define yychar ]b4_prefix[char
/* Enabling traces. */
#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug_flag[
+# define YYDEBUG ]b4_parse_trace_if([1], [0])[
#endif
/* Enabling verbose error messages. */
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
-# define YYERROR_VERBOSE ]b4_error_verbose_flag[
+# define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
#endif
/* Enabling the token table. */
#define YYPACT_NINF ]b4_pact_ninf[
+#define yypact_value_is_default(yystate) \
+ ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
+
#define YYTABLE_NINF ]b4_table_ninf[
+#define yytable_value_is_error(yytable_value) \
+ ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
+
]b4_parser_tables_define[
#define yyerrok (yyerrstatus = 0)
char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
/* Start YYX at -YYN if negative to avoid negative indexes in
- YYCHECK. */
+ 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. */
yyarg[yycount++] = yytname[yytoken];
for (yyx = yyxbegin; yyx < yyxend; ++yyx)
- if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+ if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
+ && !yytable_value_is_error (yytable[yyx + yyn]))
{
if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
{
#endif /* YYERROR_VERBOSE */
\f
-]b4_yydestruct_generate([b4_c_function_def])[
+]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
-]b4_push_if([],
-[[/* Prevent warnings from -Wmissing-prototypes. */
+
+/* Prevent warnings from -Wmissing-prototypes. */
#ifdef YYPARSE_PARAM
]b4_c_function_decl([yyparse], [int],
- [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
+ [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
#else /* ! YYPARSE_PARAM */
]b4_c_function_decl([yyparse], [int], b4_parse_param)[
-#endif /* ! YYPARSE_PARAM */]])
+#endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
-m4_divert_push([KILL])# ======================== M4 code.
-# b4_declare_scanner_communication_variables
-# ------------------------------------------
-# Declare the variables that are global, or local to YYPARSE if
-# pure-parser.
-m4_define([b4_declare_scanner_communication_variables],
-[[/* The lookahead symbol. */
-int yychar;
-
-/* The semantic value of the lookahead symbol. */
-YYSTYPE yylval;
-]b4_locations_if([[
-/* Location data for the lookahead symbol. */
-YYLTYPE yylloc;
-]])b4_pure_if([], [[
-/* Number of syntax errors so far. */
-int yynerrs;
-]])])
-
-# b4_declare_parser_state_variables
-# ---------------------------------
-# Declare all the variables that are needed to maintain the parser state
-# between calls to yypush_parse.
-m4_define([b4_declare_parser_state_variables],
-[b4_pure_if([[ /* Number of syntax errors so far. */
- int yynerrs;
-]])[
- int yystate;
- /* Number of tokens to shift before error messages enabled. */
- int yyerrstatus;
-
- /* The stacks and their tools:
- `yyss': related to states.
- `yyvs': related to semantic values.]b4_locations_if([[
- `yyls': related to locations.]])[
+b4_declare_scanner_communication_variables])[]b4_push_if([[
- Refer to the stacks thru separate pointers, to allow yyoverflow
- to reallocate them elsewhere. */
- /* The state stack. */
- yytype_int16 yyssa[YYINITDEPTH];
- yytype_int16 *yyss;
- yytype_int16 *yyssp;
-
- /* The semantic value stack. */
- YYSTYPE yyvsa[YYINITDEPTH];
- YYSTYPE *yyvs;
- YYSTYPE *yyvsp;
-]b4_locations_if([[
- /* The location stack. */
- YYLTYPE yylsa[YYINITDEPTH];
- YYLTYPE *yyls;
- YYLTYPE *yylsp;
-
- /* The locations where the error started and ended. */
- YYLTYPE yyerror_range[2];
-]])[
- YYSIZE_T yystacksize;
-]])
-
-m4_divert_pop([KILL])dnl# ====================== End of M4 code.
-
-b4_pure_if([], [b4_declare_scanner_communication_variables])
-
-b4_push_if(
-[[struct yypstate
- {
- ]b4_declare_parser_state_variables[
+struct yypstate
+ {]b4_declare_parser_state_variables[
/* Used to determine if this is the first time this instance has
been used. */
int yynew;
free (yyps);]b4_pure_if([], [[
yypstate_allocated = 0;]])[
}
-
-]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
-]])[#define yystate yyps->yystate
+]b4_pure_if([[
+#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
+#define yystate yyps->yystate
#define yyerrstatus yyps->yyerrstatus
#define yyssa yyps->yyssa
#define yyss yyps->yyss
#define yyssp yyps->yyssp
#define yyvsa yyps->yyvsa
#define yyvs yyps->yyvs
-#define yyvsp yyps->yyvsp
-]b4_locations_if([[#define yylsa yyps->yylsa
+#define yyvsp yyps->yyvsp]b4_locations_if([[
+#define yylsa yyps->yylsa
#define yyls yyps->yyls
#define yylsp yyps->yylsp
-#define yyerror_range yyps->yyerror_range
-]])[#define yystacksize yyps->yystacksize
-]])[
-/*-------------------------.
-| yyparse or yypush_parse. |
-`-------------------------*/
-]b4_push_if([
-b4_c_function_def([[yypush_parse]], [[int]],
+#define yyerror_range yyps->yyerror_range]])[
+#define yystacksize yyps->yystacksize
+
+
+/*---------------.
+| yypush_parse. |
+`---------------*/
+
+]b4_c_function_def([[yypush_parse]], [[int]],
[[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
[[[int yypushed_char]], [[yypushed_char]]],
[[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
[[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
- b4_parse_param]))], [
+ b4_parse_param]))], [[
+
+
+/*----------.
+| yyparse. |
+`----------*/
+
#ifdef YYPARSE_PARAM
-b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
+]b4_c_function_def([yyparse], [int],
+ [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
#else /* ! YYPARSE_PARAM */
-b4_c_function_def([yyparse], [int], b4_parse_param)
-#endif])[
-{
-]b4_pure_if([b4_declare_scanner_communication_variables])
-b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar;
- YYSTYPE yypushed_val = yylval;
- ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
-]])])],
- [b4_declare_parser_state_variables])[
+]b4_c_function_def([yyparse], [int], b4_parse_param)[
+#endif]])[
+{]b4_pure_if([b4_declare_scanner_communication_variables
+])b4_push_if([b4_pure_if([], [[
+ int yypushed_char = yychar;
+ YYSTYPE yypushed_val = yylval;]b4_locations_if([[
+ YYLTYPE yypushed_loc = yylloc;]])
+])],
+ [b4_declare_parser_state_variables
+])[
int yyn;
int yyresult;
/* Lookahead token as an internal (translated) token number. */
/* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate];
- if (yyn == YYPACT_NINF)
+ if (yypact_value_is_default (yyn))
goto yydefault;
/* Not known => get a lookahead token if don't already have one. */
yyn = yytable[yyn];
if (yyn <= 0)
{
- if (yyn == 0 || yyn == YYTABLE_NINF)
+ if (yytable_value_is_error (yyn))
goto yyerrlab;
yyn = -yyn;
goto yyreduce;
for (;;)
{
yyn = yypact[yystate];
- if (yyn != YYPACT_NINF)
+ if (!yypact_value_is_default (yyn))
{
yyn += YYTERROR;
if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
#ifndef yyoverflow
if (yyss != yyssa)
YYSTACK_FREE (yyss);
-#endif
-]b4_push_if([[ yyps->yynew = 1;
+#endif]b4_push_if([[
+ yyps->yynew = 1;
-yypushreturn:
-]])[#if YYERROR_VERBOSE
+yypushreturn:]])[
+#if YYERROR_VERBOSE
if (yymsg != yymsgbuf)
YYSTACK_FREE (yymsg);
#endif
]b4_epilogue[]dnl
b4_defines_if(
[@output(b4_spec_defines_file@)@
-b4_copyright([Interface for Bison's Yacc-like parsers in C])dnl'
+b4_copyright([Interface for Bison's Yacc-like parsers in C])dnl
b4_percent_code_get([[requires]])[]dnl
projects / bison.git / blobdiff