-*- C -*-
-
# Yacc compatible skeleton for Bison
# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
# 2007, 2008 Free Software Foundation, Inc.
+m4_pushdef([b4_copyright_years],
+[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008])
+
# 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 3 of the License, or
# --------------------
# Expansion of $<TYPE>$.
m4_define([b4_lhs_value],
-[(yyval[]m4_ifval([$1], [.$1]))])
+[b4_symbol_value(yyval, [$1])])
# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
-[(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
+ [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
-[(yylsp@{($2) - ($1)@})])
+ [(yylsp@{b4_subtract([$2], [$1])@})])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
m4_divert_push(0)dnl
-@output(b4_parser_file_name@)
-b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
- [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
+@output(b4_parser_file_name@)@
+b4_copyright([Implementation for Bison's Yacc-like parsers in C])dnl'
+[
/* C LALR(1) parser skeleton written by Richard Stallman, by
simplifying the original so-called "semantic" parser. */
#define YYNNTS ]b4_nterms_number[
/* YYNRULES -- Number of rules. */
#define YYNRULES ]b4_rules_number[
-/* YYNRULES -- Number of states. */
+/* YYNSTATES -- Number of states. */
#define YYNSTATES ]b4_states_number[
-/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
+/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
+ by yylex, with out-of-bounds checking. */
#define YYUNDEFTOK ]b4_undef_token_number[
#define YYMAXUTOK ]b4_user_token_number_max[
#define YYTRANSLATE(YYX) \
((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
-/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
+/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
+ as returned by yylex, without out-of-bounds checking. */
static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
{
]b4_translate[
};
#if YYDEBUG
-/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
- YYRHS. */
-static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
-{
- ]b4_prhs[
-};
-
-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
-static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
-{
- ]b4_rhs[
-};
-
-/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
-static const ]b4_int_type_for([b4_rline])[ yyrline[] =
-{
- ]b4_rline[
-};
+]b4_integral_parser_table_define([rline], [b4_rline],
+ [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[
#endif
#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
#endif
# ifdef YYPRINT
-/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
- token YYLEX-NUM. */
+/* YYTOKNUM[NUM] -- (External) token number corresponding to the
+ (internal) symbol number NUM (which must be that of a token). */
static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
{
]b4_toknum[
};
# endif
-/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
-static const ]b4_int_type_for([b4_r1])[ yyr1[] =
-{
- ]b4_r1[
-};
-
-/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
-static const ]b4_int_type_for([b4_r2])[ yyr2[] =
-{
- ]b4_r2[
-};
-
-/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
- STATE-NUM when YYTABLE doesn't specify something else to do. Zero
- means the default is an error. */
-static const ]b4_int_type_for([b4_defact])[ yydefact[] =
-{
- ]b4_defact[
-};
-
-/* YYDEFGOTO[NTERM-NUM]. */
-static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
-{
- ]b4_defgoto[
-};
-
-/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
- STATE-NUM. */
#define YYPACT_NINF ]b4_pact_ninf[
-static const ]b4_int_type_for([b4_pact])[ yypact[] =
-{
- ]b4_pact[
-};
-/* YYPGOTO[NTERM-NUM]. */
-static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
-{
- ]b4_pgoto[
-};
-
-/* 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. */
#define YYTABLE_NINF ]b4_table_ninf[
-static const ]b4_int_type_for([b4_table])[ yytable[] =
-{
- ]b4_table[
-};
-static const ]b4_int_type_for([b4_check])[ yycheck[] =
-{
- ]b4_check[
-};
-
-/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
- symbol of state STATE-NUM. */
-static const ]b4_int_type_for([b4_stos])[ yystos[] =
-{
- ]b4_stos[
-};
+]b4_parser_tables_define[
#define yyerrok (yyerrstatus = 0)
#define yyclearin (yychar = YYEMPTY)
`------------------------------------------------*/
]b4_c_function_def([yy_reduce_print], [static void],
- [[YYSTYPE *yyvsp], [yyvsp]],
+ [[yytype_int16 *yyssp], [yyssp]],
+ [[YYSTYPE *yyvsp], [yyvsp]],
b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
- ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
- b4_parse_param]))[
+ ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
+ b4_parse_param]))[
{
+ unsigned long int yylno = yyrline[yyrule];
int yynrhs = yyr2[yyrule];
int yyi;
- unsigned long int yylno = yyrline[yyrule];
YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
- yyrule - 1, yylno);
+ yyrule - 1, yylno);
/* The symbols being reduced. */
for (yyi = 0; yyi < yynrhs; yyi++)
{
YYFPRINTF (stderr, " $%d = ", yyi + 1);
- yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
- &]b4_rhs_value(yynrhs, yyi + 1)[
- ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
- b4_user_args[);
+ yy_symbol_print (stderr,
+ yystos[yyssp[yyi + 1 - yynrhs]],
+ &]b4_rhs_value(yynrhs, yyi + 1)[
+ ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
+ b4_user_args[);
YYFPRINTF (stderr, "\n");
}
}
# define YY_REDUCE_PRINT(Rule) \
do { \
if (yydebug) \
- yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
+ yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
} while (YYID (0))
/* Nonzero means print parse trace. It is left uninitialized so that
# endif
/* Copy into YYRESULT an error message about the unexpected token
- YYCHAR while in state YYSTATE. Return the number of bytes copied,
+ YYTOKEN while in state YYSTATE. Return the number of bytes copied,
including the terminating null byte. If YYRESULT is null, do not
copy anything; just return the number of bytes that would be
copied. As a special case, return 0 if an ordinary "syntax error"
message will do. Return YYSIZE_MAXIMUM if overflow occurs during
size calculation. */
static YYSIZE_T
-yysyntax_error (char *yyresult, int yystate, int yychar)
+yysyntax_error (char *yyresult, int yystate, int yytoken)
{
int yyn = yypact[yystate];
return 0;
else
{
- int yytype = YYTRANSLATE (yychar);
- YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
+ YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
YYSIZE_T yysize = yysize0;
YYSIZE_T yysize1;
int yysize_overflow = 0;
enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+ /* Internationalized format string. */
+ const char *yyformat = 0;
+ /* Arguments of yyformat. */
char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
- int yyx;
-
-# if 0
- /* This is so xgettext sees the translatable formats that are
- constructed on the fly. */
- YY_("syntax error, unexpected %s");
- YY_("syntax error, unexpected %s, expecting %s");
- YY_("syntax error, unexpected %s, expecting %s or %s");
- YY_("syntax error, unexpected %s, expecting %s or %s or %s");
- YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
-# endif
- 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. */
/* Stay within bounds of both yycheck and yytname. */
int yychecklim = YYLAST - yyn + 1;
int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
- int yycount = 1;
+ /* Number of reported tokens (one for the "unexpected", one per
+ "expected"). */
+ int yycount = 0;
+ int yyx;
- yyarg[0] = yytname[yytype];
- yyfmt = yystpcpy (yyformat, yyunexpected);
+ yyarg[yycount++] = yytname[yytoken];
for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
{
yycount = 1;
yysize = yysize0;
- yyformat[sizeof yyunexpected - 1] = '\0';
break;
}
yyarg[yycount++] = yytname[yyx];
yysize1 = yysize + yytnamerr (0, yytname[yyx]);
yysize_overflow |= (yysize1 < yysize);
yysize = yysize1;
- yyfmt = yystpcpy (yyfmt, yyprefix);
- yyprefix = yyor;
}
- yyf = YY_(yyformat);
- yysize1 = yysize + yystrlen (yyf);
+ switch (yycount)
+ {
+#define YYCASE_(N, S) \
+ case N: \
+ yyformat = S; \
+ break
+ YYCASE_(1, YY_("syntax error, unexpected %s"));
+ YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
+ YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+ YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+ YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+#undef YYCASE_
+ }
+
+ yysize1 = yysize + yystrlen (yyformat);
yysize_overflow |= (yysize1 < yysize);
yysize = yysize1;
produced a string with the wrong number of "%s"s. */
char *yyp = yyresult;
int yyi = 0;
- while ((*yyp = *yyf) != '\0')
- {
- if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
- {
- yyp += yytnamerr (yyp, yyarg[yyi++]);
- yyf += 2;
- }
- else
- {
- yyp++;
- yyf++;
- }
- }
+ while ((*yyp = *yyformat) != '\0')
+ if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
+ {
+ yyp += yytnamerr (yyp, yyarg[yyi++]);
+ yyformat += 2;
+ }
+ else
+ {
+ yyp++;
+ yyformat++;
+ }
}
return yysize;
}
int yytoken;
/* The variables used to return semantic value and location from the
action routines. */
- YYSTYPE yyval;
-]b4_locations_if([[ YYLTYPE yyloc;
-]])[
+ YYSTYPE yyval;]b4_locations_if([[
+ YYLTYPE yyloc;]])[
+
#if YYERROR_VERBOSE
/* Buffer for error messages, and its allocated size. */
char yymsgbuf[128];
/* The number of symbols on the RHS of the reduced rule.
Keep to zero when no symbol should be popped. */
- int yylen = 0;
-]b4_push_if([[
+ int yylen = 0;]b4_push_if([[
+
if (!yyps->yynew)
{
yyn = yypact[yystate];
goto yyread_pushed_token;
- }
-]])[
+ }]])[
+
yytoken = 0;
yyss = yyssa;
- yyvs = yyvsa;
-]b4_locations_if([[ yyls = yylsa;
-]])[
+ yyvs = yyvsa;]b4_locations_if([[
+ yyls = yylsa;]])[
yystacksize = YYINITDEPTH;
YYDPRINTF ((stderr, "Starting parse\n"));
/* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
if (yychar == YYEMPTY)
- {
-]b4_push_if([[ if (!yyps->yynew)
- {
-]b4_use_push_for_pull_if([],
-[[ YYDPRINTF ((stderr, "Return for a new token:\n"));
-]])[ yyresult = YYPUSH_MORE;
+ {]b4_push_if([[
+ if (!yyps->yynew)
+ {]b4_use_push_for_pull_if([], [[
+ YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
+ yyresult = YYPUSH_MORE;
goto yypushreturn;
}
- yyps->yynew = 0;
-]b4_pure_if([], [[
+ yyps->yynew = 0;]b4_pure_if([], [[
/* Restoring the pushed token is only necessary for the first
yypush_parse invocation since subsequent invocations don't overwrite
it before jumping to yyread_pushed_token. */
yychar = yypushed_char;
- yylval = yypushed_val;
- ]b4_locations_if([[yylloc = yypushed_loc;
-]])])[
-yyread_pushed_token:
-]])[ YYDPRINTF ((stderr, "Reading a token: "));
-]b4_push_if([b4_pure_if([[ yychar = yypushed_char;
+ yylval = yypushed_val;]b4_locations_if([[
+ yylloc = yypushed_loc;]])])[
+yyread_pushed_token:]])[
+ YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
+ yychar = yypushed_char;
if (yypushed_val)
- yylval = *yypushed_val;
-]b4_locations_if([[ if (yypushed_loc)
- yylloc = *yypushed_loc;
-]])])],
-[[ yychar = YYLEX;
-]])[ }
+ yylval = *yypushed_val;]b4_locations_if([[
+ if (yypushed_loc)
+ yylloc = *yypushed_loc;]])])], [[
+ yychar = YYLEX;]])[
+ }
if (yychar <= YYEOF)
{
yyerror (]b4_yyerror_args[YY_("syntax error"));
#else
{
- YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
+ YYSIZE_T yysize = yysyntax_error (0, yystate, yytoken);
if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
{
YYSIZE_T yyalloc = 2 * yysize;
if (0 < yysize && yysize <= yymsg_alloc)
{
- (void) yysyntax_error (yymsg, yystate, yychar);
+ (void) yysyntax_error (yymsg, yystate, yytoken);
yyerror (]b4_yyerror_args[yymsg);
}
else
return YYID (yyresult);
}
-
-]b4_epilogue
+]b4_epilogue[]dnl
b4_defines_if(
-[@output(b4_spec_defines_file@)
-b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
- [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
+[@output(b4_spec_defines_file@)@
+b4_copyright([Interface for Bison's Yacc-like parsers in C])dnl'
b4_percent_code_get([[requires]])[]dnl
b4_percent_code_get([[provides]])[]dnl
])dnl b4_defines_if
m4_divert_pop(0)
+m4_popdef([b4_copyright_years])
projects / bison.git / blobdiff