m4_divert(-1) -*- C -*-
# Yacc compatible skeleton for Bison
-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002
+# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# b4_lex_param
# ------------
-# Accumule in b4_lex_param all the yylex arguments.
+# Accumulate in b4_lex_param all the yylex arguments.
# b4_lex_param arrives quoted twice, but we want to keep only one level.
m4_define([b4_lex_param],
m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
-b4_location_if([, [[YYLTYPE *], [&yylloc]]])])dnl
-m4_ifdef([b4_lex_param], [, ]b4_lex_param)))
+b4_location_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
+m4_ifdef([b4_lex_param], b4_lex_param)))
[m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char],
b4_ints_in($@, [-128], [127]), [1], [yysigned_char],
- b4_ints_in($@, [0], [65535]), [1], [unsigned short],
- b4_ints_in($@, [-32768], [32767]), [1], [short],
+ b4_ints_in($@, [0], [65535]), [1], [unsigned short int],
+ b4_ints_in($@, [-32768], [32767]), [1], [short int],
m4_eval([0 <= $1]), [1], [unsigned int],
m4_divert(0)dnl
@output @output_parser_name@
b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
- [1984, 1989, 1990, 2000, 2001, 2002])[
+ [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])[
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.
#if ! defined (yyoverflow) || YYERROR_VERBOSE
+# ifndef YYFREE
+# define YYFREE free
+# endif
+# ifndef YYMALLOC
+# define YYMALLOC malloc
+# endif
+
/* The parser invokes alloca or malloc; define the necessary symbols. */
-# if YYSTACK_USE_ALLOCA
-# define YYSTACK_ALLOC alloca
+# ifdef YYSTACK_USE_ALLOCA
+# if YYSTACK_USE_ALLOCA
+# define YYSTACK_ALLOC alloca
+# endif
# else
-# ifndef YYSTACK_USE_ALLOCA
-# if defined (alloca) || defined (_ALLOCA_H)
-# define YYSTACK_ALLOC alloca
-# else
-# ifdef __GNUC__
-# define YYSTACK_ALLOC __builtin_alloca
-# endif
+# if defined (alloca) || defined (_ALLOCA_H)
+# define YYSTACK_ALLOC alloca
+# else
+# ifdef __GNUC__
+# define YYSTACK_ALLOC __builtin_alloca
# endif
# endif
# endif
# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
# define YYSIZE_T size_t
# endif
-# define YYSTACK_ALLOC malloc
-# define YYSTACK_FREE free
+# define YYSTACK_ALLOC YYMALLOC
+# define YYSTACK_FREE YYFREE
# endif
#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
#if (! defined (yyoverflow) \
&& (! defined (__cplusplus) \
- || (]b4_location_if([YYLTYPE_IS_TRIVIAL && ])[YYSTYPE_IS_TRIVIAL)))
+ || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
+ && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))
/* A type that is properly aligned for any stack member. */
union yyalloc
{
- short yyss;
+ short int yyss;
YYSTYPE yyvs;
]b4_location_if([ YYLTYPE yyls;
])dnl
N elements. */
]b4_location_if(
[# define YYSTACK_BYTES(N) \
- ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+ ((N) * (sizeof (short int) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+ 2 * YYSTACK_GAP_MAXIMUM)],
[# define YYSTACK_BYTES(N) \
- ((N) * (sizeof (short) + sizeof (YYSTYPE)) \
+ ((N) * (sizeof (short int) + sizeof (YYSTYPE)) \
+ YYSTACK_GAP_MAXIMUM)])[
/* Copy COUNT objects from FROM to TO. The source and destination do
not overlap. */
# ifndef YYCOPY
-# if 1 < __GNUC__
+# if defined (__GNUC__) && 1 < __GNUC__
# define YYCOPY(To, From, Count) \
__builtin_memcpy (To, From, (Count) * sizeof (*(From)))
# else
#if defined (__STDC__) || defined (__cplusplus)
typedef signed char yysigned_char;
#else
- typedef short yysigned_char;
+ typedef short int yysigned_char;
#endif
/* YYFINAL -- State number of the termination state. */
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
-#define YYERROR goto yyerrlab1
+#define YYERROR goto yyerrorlab
+
/* Like YYERROR except do call yyerror. This remains here temporarily
to ease the transition to the new meaning of YYERROR, for GCC.
} \
while (0)
+
#define YYTERROR 1
#define YYERRCODE 256
-/* YYLLOC_DEFAULT -- Compute the default location (before the actions
- are run). */
+/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+ If N is 0, then set CURRENT to the empty location which ends
+ the previous symbol: RHS[0] (always defined). */
+
+#define YYRHSLOC(Rhs, K) ((Rhs)[K])
#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N) \
- Current.first_line = Rhs[1].first_line; \
- Current.first_column = Rhs[1].first_column; \
- Current.last_line = Rhs[N].last_line; \
- Current.last_column = Rhs[N].last_column;
+# define YYLLOC_DEFAULT(Current, Rhs, N) \
+ do \
+ if (N) \
+ { \
+ (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
+ (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
+ (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
+ (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
+ } \
+ else \
+ { \
+ (Current).first_line = (Current).last_line = \
+ YYRHSLOC(Rhs, 0).last_line; \
+ (Current).first_column = (Current).last_column = \
+ YYRHSLOC(Rhs, 0).last_column; \
+ } \
+ while (0)
#endif
+
+/* 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. */
+
+#ifndef YY_LOCATION_PRINT
+# if YYLTYPE_IS_TRIVIAL
+# define YY_LOCATION_PRINT(File, Loc) \
+ fprintf (File, "%d.%d-%d.%d", \
+ (Loc).first_line, (Loc).first_column, \
+ (Loc).last_line, (Loc).last_column)
+# else
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+# endif
+#endif
+
+
/* YYLEX -- calling `yylex' with the right arguments. */
#ifdef YYLEX_PARAM
YYFPRINTF Args; \
} while (0)
-# define YYDSYMPRINT(Args) \
-do { \
- if (yydebug) \
- yysymprint Args; \
-} while (0)
-
-# define YYDSYMPRINTF(Title, Token, Value, Location) \
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
do { \
if (yydebug) \
{ \
YYFPRINTF (stderr, "%s ", Title); \
yysymprint (stderr, \
- Token, Value]b4_location_if([, Location])[); \
+ Type, Value]b4_location_if([, Location])[); \
YYFPRINTF (stderr, "\n"); \
} \
} while (0)
/*------------------------------------------------------------------.
| yy_stack_print -- Print the state stack from its BOTTOM up to its |
-| TOP (cinluded). |
+| TOP (included). |
`------------------------------------------------------------------*/
]b4_c_function_def([yy_stack_print], [static void],
- [[short *bottom], [bottom]],
- [[short *top], [top]])[
+ [[short int *bottom], [bottom]],
+ [[short int *top], [top]])[
{
YYFPRINTF (stderr, "Stack now");
for (/* Nothing. */; bottom <= top; ++bottom)
[[int yyrule], [yyrule]])[
{
int yyi;
- unsigned int yylineno = yyrline[yyrule];
+ unsigned int yylno = yyrline[yyrule];
YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
- yyrule - 1, yylineno);
+ yyrule - 1, yylno);
/* Print the symbols being reduced, and their result. */
for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
-# define YYDSYMPRINT(Args)
-# define YYDSYMPRINTF(Title, Token, Value, Location)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !YYDEBUG */
SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
evaluated with infinite-precision integer arithmetic. */
-#if YYMAXDEPTH == 0
+#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif
# Declare the variables that are global, or local to YYPARSE if
# pure-parser.
m4_define([b4_declare_parser_variables],
-[/* The lookahead symbol. */
+[/* The look-ahead symbol. */
int yychar;
-/* The semantic value of the lookahead symbol. */
+/* The semantic value of the look-ahead symbol. */
YYSTYPE yylval;
/* Number of syntax errors so far. */
int yynerrs;b4_location_if([
-/* Location data for the lookahead symbol. */
+/* Location data for the look-ahead symbol. */
YYLTYPE yylloc;])
])
m4_divert_pop([KILL])dnl# ====================== End of M4 code.
int yyresult;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
- /* Lookahead token as an internal (translated) token number. */
+ /* Look-ahead token as an internal (translated) token number. */
int yytoken = 0;
/* Three stacks and their tools:
to reallocate them elsewhere. */
/* The state stack. */
- short yyssa[YYINITDEPTH];
- short *yyss = yyssa;
- register short *yyssp;
+ short int yyssa[YYINITDEPTH];
+ short int *yyss = yyssa;
+ register short int *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
[[ /* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
YYLTYPE *yyls = yylsa;
- YYLTYPE *yylsp;]])[
+ YYLTYPE *yylsp;
+ /* The locations where the error started and ended. */
+ YYLTYPE yyerror_range[2];]])[
#define YYPOPSTACK (yyvsp--, yyssp--]b4_location_if([, yylsp--])[)
yyssp = yyss;
yyvsp = yyvs;
-]b4_location_if([ yylsp = yyls;])[
- goto yysetstate;
+]b4_location_if([[ yylsp = yyls;
+#if YYLTYPE_IS_TRIVIAL
+ /* Initialize the default location before parsing starts. */
+ yylloc.first_line = yylloc.last_line = 1;
+ yylloc.first_column = yylloc.last_column = 0;
+#endif
+]])
+m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar], [yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [yylval])dnl
+ /* User initialization code. */
+ b4_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])dnl
+/* Line __line__ of yacc.c. */
+b4_syncline([@oline@], [@ofile@])])dnl
+[
+ yyvsp[0] = yylval;
+]b4_location_if([[ yylsp[0] = yylloc;
+]])
+[ goto yysetstate;
/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate. |
these so that the &'s don't force the real ones into
memory. */
YYSTYPE *yyvs1 = yyvs;
- short *yyss1 = yyss;
+ short int *yyss1 = yyss;
]b4_location_if([ YYLTYPE *yyls1 = yyls;])[
/* Each stack pointer address is followed by the size of the
yystacksize = YYMAXDEPTH;
{
- short *yyss1 = yyss;
+ short int *yyss1 = yyss;
union yyalloc *yyptr =
(union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
if (! yyptr)
yybackup:
/* Do appropriate processing given the current state. */
-/* Read a lookahead token if we need one and don't already have one. */
+/* Read a look-ahead token if we need one and don't already have one. */
/* yyresume: */
- /* First try to decide what to do without reference to lookahead token. */
+ /* First try to decide what to do without reference to look-ahead token. */
yyn = yypact[yystate];
if (yyn == YYPACT_NINF)
goto yydefault;
- /* Not known => get a lookahead token if don't already have one. */
+ /* Not known => get a look-ahead token if don't already have one. */
- /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
+ /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */
if (yychar == YYEMPTY)
{
YYDPRINTF ((stderr, "Reading a token: "));
else
{
yytoken = YYTRANSLATE (yychar);
- YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
}
/* If the proper action on seeing token YYTOKEN is to reduce or to
if (yyn == YYFINAL)
YYACCEPT;
- /* Shift the lookahead token. */
- YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));
+ /* Shift the look-ahead token. */
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
yyval = yyvsp[1-yylen];
]b4_location_if(
-[ /* Default location. */
- YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);])[
+[[ /* Default location. */
+ YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);]])[
YY_REDUCE_PRINT (yyn);
switch (yyn)
]{
{
YYSIZE_T yysize = 0;
int yytype = YYTRANSLATE (yychar);
+ const char* yyprefix;
char *yymsg;
- int yyx, yycount;
+ int yyx;
- yycount = 0;
/* Start YYX at -YYN if negative to avoid negative indexes in
YYCHECK. */
- for (yyx = yyn < 0 ? -yyn : 0;
- yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
+ int yyxbegin = yyn < 0 ? -yyn : 0;
+
+ /* Stay within bounds of both yycheck and yytname. */
+ int yychecklim = YYLAST - yyn;
+ int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+ int yycount = 0;
+
+ yyprefix = ", expecting ";
+ for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
- yysize += yystrlen (yytname[yyx]) + 15, yycount++;
- yysize += yystrlen ("syntax error, unexpected ") + 1;
- yysize += yystrlen (yytname[yytype]);
+ {
+ yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
+ yycount += 1;
+ if (yycount == 5)
+ {
+ yysize = 0;
+ break;
+ }
+ }
+ yysize += (sizeof ("syntax error, unexpected ")
+ + yystrlen (yytname[yytype]));
yymsg = (char *) YYSTACK_ALLOC (yysize);
if (yymsg != 0)
{
if (yycount < 5)
{
- yycount = 0;
- for (yyx = yyn < 0 ? -yyn : 0;
- yyx < (int) (sizeof (yytname) / sizeof (char *));
- yyx++)
+ yyprefix = ", expecting ";
+ for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
{
- const char *yyq = ! yycount ? ", expecting " : " or ";
- yyp = yystpcpy (yyp, yyq);
+ yyp = yystpcpy (yyp, yyprefix);
yyp = yystpcpy (yyp, yytname[yyx]);
- yycount++;
+ yyprefix = " or ";
}
}
yyerror (]b4_yyerror_args[yymsg);
yyerror (]b4_yyerror_args["syntax error");
}
+]b4_location_if([[ yyerror_range[0] = yylloc;]])[
+
if (yyerrstatus == 3)
{
- /* If just tried and failed to reuse lookahead token after an
+ /* If just tried and failed to reuse look-ahead token after an
error, discard it. */
- /* Return failure if at end of input. */
- if (yychar == YYEOF)
+ if (yychar <= YYEOF)
{
- /* Pop the error token. */
- YYPOPSTACK;
- /* Pop the rest of the stack. */
- while (yyss < yyssp)
- {
- YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
- yydestruct (yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
- YYPOPSTACK;
- }
- YYABORT;
+ /* If at end of input, pop the error token,
+ then the rest of the stack, then return failure. */
+ if (yychar == YYEOF)
+ for (;;)
+ {
+]b4_location_if([[ yyerror_range[0] = *yylsp;]])[
+ YYPOPSTACK;
+ if (yyssp == yyss)
+ YYABORT;
+ yydestruct ("Error: popping",
+ yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
+ }
}
-
- YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
- yydestruct (yytoken, &yylval]b4_location_if([, &yylloc])[);
- yychar = YYEMPTY;
+ else
+ {
+ yydestruct ("Error: discarding", yytoken, &yylval]b4_location_if([, &yylloc])[);
+ yychar = YYEMPTY;
+ }
}
- /* Else will try to reuse lookahead token after shifting the error
+ /* Else will try to reuse look-ahead token after shifting the error
token. */
goto yyerrlab1;
-/*----------------------------------------------------.
-| yyerrlab1 -- error raised explicitly by an action. |
-`----------------------------------------------------*/
+/*---------------------------------------------------.
+| yyerrorlab -- error raised explicitly by YYERROR. |
+`---------------------------------------------------*/
+yyerrorlab:
+
+#ifdef __GNUC__
+ /* Pacify GCC when the user code never invokes YYERROR and the label
+ yyerrorlab therefore never appears in user code. */
+ if (0)
+ goto yyerrorlab;
+#endif
+
+]b4_location_if([[ yyerror_range[0] = yylsp[1-yylen];
+ yylsp -= yylen;
+ ]])[yyvsp -= yylen;
+ yyssp -= yylen;
+ yystate = *yyssp;
+ goto yyerrlab1;
+
+
+/*-------------------------------------------------------------.
+| yyerrlab1 -- common code for both syntax error and YYERROR. |
+`-------------------------------------------------------------*/
yyerrlab1:
yyerrstatus = 3; /* Each real token shifted decrements this. */
if (yyssp == yyss)
YYABORT;
- YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
- yydestruct (yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
- yyvsp--;
- yystate = *--yyssp;
-]b4_location_if([ yylsp--;])[
+]b4_location_if([[ yyerror_range[0] = *yylsp;]])[
+ yydestruct ("Error: popping", yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
+ YYPOPSTACK;
+ yystate = *yyssp;
YY_STACK_PRINT (yyss, yyssp);
}
if (yyn == YYFINAL)
YYACCEPT;
- YYDPRINTF ((stderr, "Shifting error token, "));
-
*++yyvsp = yylval;
-]b4_location_if([ *++yylsp = yylloc;])[
+]b4_location_if([[
+ yyerror_range[1] = yylloc;
+ /* Using YYLLOC is tempting, but would change the location of
+ the look-ahead. YYLOC is available though. */
+ YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2);
+ *++yylsp = yyloc;]])[
+
+ /* Shift the error token. */
+ YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
yystate = yyn;
goto yynewstate;
| yyabortlab -- YYABORT comes here. |
`-----------------------------------*/
yyabortlab:
+ yydestruct ("Error: discarding lookahead",
+ yytoken, &yylval]b4_location_if([, &yylloc])[);
+ yychar = YYEMPTY;
yyresult = 1;
goto yyreturn;
m4_if(b4_defines_flag, 0, [],
[@output @output_header_name@
b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
- [1984, 1989, 1990, 2000, 2001, 2002])
+ [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.
projects / bison.git / blobdiff