YoushouldhavereceivedacopyoftheGNUGeneralPublicLicense
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* As a special exception, you may create a larger work that contains partoralloftheBisonparserskeletonanddistributethatwork undertermsofyourchoice,solongasthatworkisn'titselfa parsergeneratorusingtheskeletonoramodifiedversionthereof asaparserskeleton.Alternatively,ifyoumodifyorredistribute theparserskeletonitself,youmay(atyouroption)removethis specialexception,whichwillcausetheskeletonandtheresulting BisonoutputfilestobelicensedundertheGNUGeneralPublic Licensewithoutthisspecialexception.
ThisspecialexceptionwasaddedbytheFreeSoftwareFoundationin
version 2.2 of Bison. */
/* C LALR(1) parser skeleton written by Richard Stallman, by
simplifying the original so-called "semantic" parser. */
/* All symbols defined below should begin with yy or YY, to avoid infringingonusernamespace.Thisshouldbedoneevenforlocal variables,astheymightotherwisebeexpandedbyusermacros. Therearesomeunavoidableexceptionswithinincludefilesto definenecessarylibrarysymbols;theyarenoted"INFRINGESON
USER NAME SPACE" below. */
/* Copy the first part of user declarations. */ #line34"parse.y"/* yacc.c:339 */
/* Copyright (c) 1990 The Regents of the University of California. */ /* All rights reserved. */
/* This code is derived from software contributed to Berkeley by */ /* Vern Paxson. */
/* The United States Government has rights in this work pursuant */ /* to contract no. DE-AC03-76SF00098 between the United States */ /* Department of Energy and the University of California. */
/* This file is part of flex. */
/* Redistribution and use in source and binary forms, with or without */ /* modification, are permitted provided that the following conditions */ /* are met: */
/* 1. Redistributions of source code must retain the above copyright */ /* notice, this list of conditions and the following disclaimer. */ /* 2. Redistributions in binary form must reproduce the above copyright */ /* notice, this list of conditions and the following disclaimer in the */ /* documentation and/or other materials provided with the distribution. */
/* Neither the name of the University nor the names of its contributors */ /* may be used to endorse or promote products derived from this software */ /* without specific prior written permission. */
/* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */ /* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */ /* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */ /* PURPOSE. */
#include"flexdef.h" #include"tables.h"
int pat, scnum, eps, headcnt, trailcnt, lastchar, i, rulelen; int trlcontxt, xcluflg, currccl, cclsorted, varlength, variable_trail_rule;
int *scon_stk; int scon_stk_ptr;
staticint madeany = false; /* whether we've made the '.' character class */ staticint ccldot, cclany; int previous_continued_action; /* whether the previous rule's action was '|' */
/* Expand a POSIX character class expression. */ #define CCL_EXPR(func) \ do{ \ int c; \ for ( c = 0; c < csize; ++c ) \ if ( isascii(c) && func(c) ) \
ccladd( currccl, c ); \
}while(0)
/* negated class */ #define CCL_NEG_EXPR(func) \ do{ \ int c; \ for ( c = 0; c < csize; ++c ) \ if ( !func(c) ) \
ccladd( currccl, c ); \
}while(0)
/* While POSIX defines isblank(), it's not ANSI C. */ #define IS_BLANK(c) ((c) == ' ' || (c) == '\t')
/* On some over-ambitious machines, such as DEC Alpha's, the default *tokentypeis"long"insteadof"int";thisleadstoproblemswith *declaringyylvalinflexdef.h.Butsofar,alltheyacc'sI'veseen *wraptheirdefinitionsofYYSTYPEwith"#ifndefYYSTYPE"'s,sothe *followingshouldensurethatthedefaulttokentypeis"int".
*/ #define YYSTYPE int
/* The parser invokes alloca or malloc; define the necessary symbols. */
# ifdef YYSTACK_USE_ALLOCA # if YYSTACK_USE_ALLOCA # ifdef __GNUC__ # define YYSTACK_ALLOC __builtin_alloca # elif defined __BUILTIN_VA_ARG_INCR # include <alloca.h> /* INFRINGES ON USER NAME SPACE */ # elif defined _AIX # define YYSTACK_ALLOC __alloca # elif defined _MSC_VER # include <malloc.h> /* INFRINGES ON USER NAME SPACE */ # define alloca _alloca # else # define YYSTACK_ALLOC alloca # if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ /* Use EXIT_SUCCESS as a witness for stdlib.h. */ # ifndef EXIT_SUCCESS # define EXIT_SUCCESS 0 # endif # endif # endif # endif # endif
# ifdef YYSTACK_ALLOC /* Pacify GCC's 'empty if-body' warning. */ # define YYSTACK_FREE(Ptr) do { /* empty */; } while (0) # ifndef YYSTACK_ALLOC_MAXIMUM /* The OS might guarantee only one guard page at the bottom of the stack, andapagesizecanbeassmallas4096bytes.Sowecannotsafely invokealloca(N)ifNexceeds4096.Useaslightlysmallernumber
to allow for a few compiler-allocated temporary stack slots. */ # define YYSTACK_ALLOC_MAXIMUM 4032/* reasonable circa 2006 */ # endif # else # define YYSTACK_ALLOC YYMALLOC # define YYSTACK_FREE YYFREE # ifndef YYSTACK_ALLOC_MAXIMUM # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM # endif # if (defined __cplusplus && ! defined EXIT_SUCCESS \
&& ! ((defined YYMALLOC || defined malloc) \
&& (defined YYFREE || defined free))) # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ # ifndef EXIT_SUCCESS # define EXIT_SUCCESS 0 # endif # endif # ifndef YYMALLOC # define YYMALLOC malloc # if ! defined malloc && ! defined EXIT_SUCCESS void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ # endif # endif # ifndef YYFREE # define YYFREE free # if ! defined free && ! defined EXIT_SUCCESS void free (void *); /* INFRINGES ON USER NAME SPACE */ # endif # endif # endif #endif/* ! defined yyoverflow || YYERROR_VERBOSE */
#if (! defined yyoverflow \
&& (! defined __cplusplus \
|| (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
/* A type that is properly aligned for any stack member. */ union yyalloc
{
yytype_int16 yyss_alloc;
YYSTYPE yyvs_alloc;
};
/* The size of the maximum gap between one aligned stack and the next. */ # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
/* The size of an array large to enough to hold all stacks, each with
N elements. */ # define YYSTACK_BYTES(N) \
((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
+ YYSTACK_GAP_MAXIMUM)
# define YYCOPY_NEEDED 1
/* Relocate STACK from its old location to the new one. The localvariablesYYSIZEandYYSTACKSIZEgivetheoldandnewnumberof elementsinthestack,andYYPTRgivesthenewlocationofthe stack.AdvanceYYPTRtoaproperlyalignedlocationforthenext
stack. */ # define YYSTACK_RELOCATE(Stack_alloc, Stack) \ do \
{ \
YYSIZE_T yynewbytes; \
YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
Stack = &yyptr->Stack_alloc; \
yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
yyptr += yynewbytes / sizeof (*yyptr); \
} \ while (0)
#endif
#ifdefined YYCOPY_NEEDED && YYCOPY_NEEDED /* Copy COUNT objects from SRC to DST. The source and destination do
not overlap. */ # ifndef YYCOPY # ifdefined __GNUC__ && 1 < __GNUC__ # define YYCOPY(Dst, Src, Count) \
__builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src))) # else # define YYCOPY(Dst, Src, Count) \ do \
{ \
YYSIZE_T yyi; \ for (yyi = 0; yyi < (Count); yyi++) \
(Dst)[yyi] = (Src)[yyi]; \
} \ while (0) # endif # endif #endif/* !YYCOPY_NEEDED */
/* YYFINAL -- State number of the termination state. */ #define YYFINAL 3 /* YYLAST -- Last index in YYTABLE. */ #define YYLAST 161
/* YYNTOKENS -- Number of terminals. */ #define YYNTOKENS 69 /* YYNNTS -- Number of nonterminals. */ #define YYNNTS 27 /* YYNRULES -- Number of rules. */ #define YYNRULES 97 /* YYNSTATES -- Number of states. */ #define YYNSTATES 140
/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
by yylex, with out-of-bounds checking. */ #define YYUNDEFTOK 2 #define YYMAXUTOK 302
/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message abouttheunexpectedtokenYYTOKENforthestatestackwhosetopis YYSSP.
Return0if*YYMSGwassuccessfullywritten.Return1if*YYMSGis notlargeenoughtoholdthemessage.Inthatcase,alsoset *YYMSG_ALLOCtotherequirednumberofbytes.Return2ifthe
required number of bytes is too large to store. */ staticint
yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
yytype_int16 *yyssp, int yytoken)
{
YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
YYSIZE_T yysize = yysize0; enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; /* Internationalized format string. */ constchar *yyformat = YY_NULLPTR; /* Arguments of yyformat. */ charconst *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: -Ifthisstateisaconsistentstatewithadefaultaction,then theonlywaythisfunctionwasinvokedisifthedefaultaction isanerroraction.Inthatcase,don'tcheckforexpected tokensbecausetherearenone. -Theonlywaytherecanbenolookaheadpresent(inyychar)isif thisstateisaconsistentstatewithadefaultaction.Thus, detectingtheabsenceofalookaheadissufficienttodetermine thatthereisnounexpectedorexpectedtokentoreport.Inthat case,justreportasimple"syntaxerror". -Don'tassumethereisn'talookaheadjustbecausethisstateisa consistentstatewithadefaultaction.Theremighthavebeena previousinconsistentstate,consistentstatewithanon-default action,orusersemanticactionthatmanipulatedyychar. -Ofcourse,theexpectedtokenlistdependsonstatestohave correctlookaheadinformation,anditdependsontheparsernot toperformextrareductionsafterfetchingalookaheadfromthe scannerandbeforedetectingasyntaxerror.Thus,statemerging (fromLALRorIELR)anddefaultreductionscorrupttheexpected tokenlist.However,thelistiscorrectforcanonicalLRwith oneexception:itwillstillcontainanytokenthatwillnotbe acceptedduetoanerroractioninalaterstate.
*/ if (yytoken != YYEMPTY)
{ int yyn = yypact[*yyssp];
yyarg[yycount++] = yytname[yytoken]; if (!yypact_value_is_default (yyn))
{ /* Start YYX at -YYN if negative to avoid negative indexes in YYCHECK.Inotherwords,skipthefirst-YYNactionsfor
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;
/* Avoid sprintf, as that infringes on the user's name space. Don'thaveundefinedbehaviorevenifthetranslation
produced a string with the wrong number of "%s"s. */
{ char *yyp = *yymsg; int yyi = 0; while ((*yyp = *yyformat) != '\0') if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
{
yyp += yytnamerr (yyp, yyarg[yyi++]);
yyformat += 2;
} else
{
yyp++;
yyformat++;
}
} return0;
} #endif/* YYERROR_VERBOSE */
/* The semantic value of the lookahead symbol. */
YYSTYPE yylval; /* Number of syntax errors so far. */ int yynerrs;
/*----------. |yyparse.|
`----------*/
int
yyparse (void)
{ int yystate; /* Number of tokens to shift before error messages enabled. */ int yyerrstatus;
/* The stacks and their tools: 'yyss':relatedtostates. 'yyvs':relatedtosemanticvalues.
Refertothestacksthroughseparatepointers,toallowyyoverflow
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;
YYSIZE_T yystacksize;
int yyn; int yyresult; /* Lookahead token as an internal (translated) token number. */ int yytoken = 0; /* The variables used to return semantic value and location from the
action routines. */
YYSTYPE yyval;
#if YYERROR_VERBOSE /* Buffer for error messages, and its allocated size. */ char yymsgbuf[128]; char *yymsg = yymsgbuf;
YYSIZE_T yymsg_alloc = sizeof yymsgbuf; #endif
yystate = 0;
yyerrstatus = 0;
yynerrs = 0;
yychar = YYEMPTY; /* Cause a token to be read. */ goto yysetstate;
/*------------------------------------------------------------. |yynewstate--Pushanewstate,whichisfoundinyystate.|
`------------------------------------------------------------*/
yynewstate: /* In all cases, when you get here, the value and location stacks
have just been pushed. So pushing a state here evens the stacks. */
yyssp++;
yysetstate:
*yyssp = yystate;
if (yyss + yystacksize - 1 <= yyssp)
{ /* Get the current used size of the three stacks, in elements. */
YYSIZE_T yysize = yyssp - yyss + 1;
#ifdef yyoverflow
{ /* Give user a chance to reallocate the stack. Use copies of thesesothatthe&'sdon'tforcetherealonesinto
memory. */
YYSTYPE *yyvs1 = yyvs;
yytype_int16 *yyss1 = yyss;
/* Each stack pointer address is followed by the size of the datainuseinthatstack,inbytes.Thisusedtobea conditionalaroundjustthetwoextraargs,butthatmight
be undefined if yyoverflow is a macro. */
yyoverflow (YY_("memory exhausted"),
&yyss1, yysize * sizeof (*yyssp),
&yyvs1, yysize * sizeof (*yyvsp),
&yystacksize);
yyss = yyss1;
yyvs = yyvs1;
} #else/* no yyoverflow */ # ifndef YYSTACK_RELOCATE goto yyexhaustedlab; # else /* Extend the stack our own way. */ if (YYMAXDEPTH <= yystacksize) goto yyexhaustedlab;
yystacksize *= 2; if (YYMAXDEPTH < yystacksize)
yystacksize = YYMAXDEPTH;
/* Do appropriate processing given the current state. Read a
lookahead token if we need one and don't already have one. */
/* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate]; if (yypact_value_is_default (yyn)) goto yydefault;
/* Not known => get a lookahead token if don't already have one. */
/* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ 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);
}
/* If the proper action on seeing token YYTOKEN is to reduce or to
detect an error, take that action. */
yyn += yytoken; if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) goto yydefault;
yyn = yytable[yyn]; if (yyn <= 0)
{ if (yytable_value_is_error (yyn)) goto yyerrlab;
yyn = -yyn; goto yyreduce;
}
/* Count tokens shifted since error; after three, turn off error
status. */ if (yyerrstatus)
yyerrstatus--;
/*-----------------------------. |yyreduce--Doareduction.|
`-----------------------------*/
yyreduce: /* yyn is the number of a rule to reduce with. */
yylen = yyr2[yyn];
/* If YYLEN is nonzero, implement the default value of the action: '$$=$1'.
Otherwise,thefollowinglinesetsYYVALtogarbage. ThisbehaviorisundocumentedandBison usersshouldnotrelyuponit.AssigningtoYYVAL unconditionallymakestheparserabitsmaller,anditavoidsa
GCC warning that YYVAL may be used uninitialized. */
yyval = yyvsp[1-yylen];
else
{ /* This EOF applies to all start conditions *whichdon'talreadyhaveEOFactions.
*/ for ( i = 1; i <= lastsc; ++i ) if ( ! sceof[i] )
scon_stk[++scon_stk_ptr] = i;
if ( scon_stk_ptr == 0 )
warn( "all start conditions already have <<EOF>> rules" );
if ( previous_continued_action )
{ /* We need to treat this as variable trailing *contextsothatthebackupdoesnothappen *intheactionbutbeforetheactionswitch *statement.Ifthebackuphappensinthe *action,thentherules"fallinginto"this *one'sactionwill*also*dothebackup, *erroneously.
*/ if ( ! varlength || headcnt != 0 )
warn( "trailing context made variable due to preceding '|' action" );
/* Mark as variable. */
varlength = true;
headcnt = 0;
}
if ( lex_compat || (varlength && headcnt == 0) )
{ /* variable trailing context rule */ /* Mark the first part of the rule as the *accepting"head"partofatrailing *contextrule. * *Bytheway,wedidn'tdothisatthe *beginningofthisproductionbecauseback *thencurrent_state_typewassetupfora *trailrule,andadd_accept()cancreate *anewstate...
*/
add_accept( (yyvsp[-1]),
num_rules | YY_TRAILING_HEAD_MASK );
variable_trail_rule = true;
}
if ( trlcontxt )
{
synerr( _("trailing context used twice") );
(yyval) = mkstate( SYM_EPSILON );
}
elseif ( previous_continued_action )
{ /* See the comment in the rule for "re2 re" *above.
*/
warn( "trailing context made variable due to preceding '|' action" );
varlength = true;
}
if ( lex_compat || varlength )
{ /* Again, see the comment in the rule for *"re2re"above.
*/
add_accept( (yyvsp[-1]),
num_rules | YY_TRAILING_HEAD_MASK );
variable_trail_rule = true;
}
case50: #line589"parse.y"/* yacc.c:1646 */
{ /* The series could be something like "(foo)", *inwhichcasewehavenoideawhatitslength *is,sowepunthere.
*/
varlength = true;
if ( (yyvsp[-1]) <= 0 )
{
synerr( _("iteration value must be positive")
);
(yyval) = (yyvsp[-3]);
}
case56: #line672"parse.y"/* yacc.c:1646 */
{ /* The singleton could be something like "(foo)", *inwhichcasewehavenoideawhatitslength *is,sowepunthere.
*/
varlength = true;
if ( (yyvsp[-1]) <= 0 )
{
synerr( _("iteration value must be positive") );
(yyval) = (yyvsp[-3]);
}
/* If one end of the range has case and the other *doesnot,orthecasesaredifferent,thenwe'renot *surewhatrangetheuseristryingtoexpress. *Examples:[@-z]or[S-t]
*/ if (has_case ((yyvsp[-2])) != has_case ((yyvsp[0]))
|| (has_case ((yyvsp[-2])) && (b_islower ((yyvsp[-2])) != b_islower ((yyvsp[0]))))
|| (has_case ((yyvsp[-2])) && (b_isupper ((yyvsp[-2])) != b_isupper ((yyvsp[0])))))
format_warn3 (
_("the character range [%c-%c] is ambiguous in a case-insensitive scanner"),
(yyvsp[-2]), (yyvsp[0]));
/* If the range spans uppercase characters but not *lowercase(orvice-versa),thenshouldweautomatically *includelowercasecharactersintherange? *Example:[@-_]spans[a-z]butnot[A-Z]
*/ elseif (!has_case ((yyvsp[-2])) && !has_case ((yyvsp[0])) && !range_covers_case ((yyvsp[-2]), (yyvsp[0])))
format_warn3 (
_("the character range [%c-%c] is ambiguous in a case-insensitive scanner"),
(yyvsp[-2]), (yyvsp[0]));
}
if ( (yyvsp[-2]) > (yyvsp[0]) )
synerr( _("negative range in character class") );
else
{ for ( i = (yyvsp[-2]); i <= (yyvsp[0]); ++i )
ccladd( (yyvsp[-3]), i );
/* Keep track if this ccl is staying in *alphabeticalorder.
*/
cclsorted = cclsorted && ((yyvsp[-2]) > lastchar);
lastchar = (yyvsp[0]);
/* Do it again for upper/lowercase */ if (sf_case_ins() && has_case((yyvsp[-2])) && has_case((yyvsp[0]))){
(yyvsp[-2]) = reverse_case ((yyvsp[-2]));
(yyvsp[0]) = reverse_case ((yyvsp[0]));
for ( i = (yyvsp[-2]); i <= (yyvsp[0]); ++i )
ccladd( (yyvsp[-3]), i );
/* Do it again for upper/lowercase */ if (sf_case_ins() && has_case((yyvsp[0]))){
(yyvsp[0]) = reverse_case ((yyvsp[0]));
ccladd ((yyvsp[-1]), (yyvsp[0]));
#line 2582"parse.c" /* yacc.c:1646 */
default: break;
}
/* User semantic actions sometimes alter yychar, and that requires
that yytoken be updated with the new translation. We take the
approach of translating immediately before every use of yytoken.
One alternative is translating here after every semantic action,
but that translation would be missed if the semantic action invokes
YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
incorrect destructor might then be invoked immediately. In the
case of YYERROR or YYBACKUP, subsequent parser actions might lead
to an incorrect destructor call or verbose syntax error message
before the lookahead is translated. */
YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
/*--------------------------------------.
| yyerrlab -- here on detecting error. |
`--------------------------------------*/
yyerrlab:
/* Make sure we have latest lookahead translation. See comments at
user semantic actions for why this is necessary. */
yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
/* If not already recovering from an error, report this error. */
if (!yyerrstatus)
{
++yynerrs;
#if ! YYERROR_VERBOSE
yyerror (YY_("syntax error"));
#else
# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \
yyssp, yytoken)
{
char const *yymsgp = YY_("syntax error");
int yysyntax_error_status;
yysyntax_error_status = YYSYNTAX_ERROR;
if (yysyntax_error_status == 0)
yymsgp = yymsg;
else if (yysyntax_error_status == 1)
{
if (yymsg != yymsgbuf)
YYSTACK_FREE (yymsg);
yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
if (!yymsg)
{
yymsg = yymsgbuf;
yymsg_alloc = sizeof yymsgbuf;
yysyntax_error_status = 2;
}
else
{
yysyntax_error_status = YYSYNTAX_ERROR;
yymsgp = yymsg;
}
}
yyerror (yymsgp);
if (yysyntax_error_status == 2)
goto yyexhaustedlab;
}
# undef YYSYNTAX_ERROR
#endif
}
if (yyerrstatus == 3)
{
/* If just tried and failed to reuse lookahead token after an
error, discard it. */
if (yychar <= YYEOF)
{
/* Return failure if at end of input. */
if (yychar == YYEOF)
YYABORT;
}
else
{
yydestruct ("Error: discarding",
yytoken, &yylval);
yychar = YYEMPTY;
}
}
/* Else will try to reuse lookahead token after shifting the error
token. */
goto yyerrlab1;
/* Pacify compilers like GCC when the user code never invokes
YYERROR and the label yyerrorlab therefore never appears in user
code. */
if (/*CONSTCOND*/ 0)
goto yyerrorlab;
/* Do not reclaim the symbols of the rule whose action triggered
this YYERROR. */
YYPOPSTACK (yylen);
yylen = 0;
YY_STACK_PRINT (yyss, yyssp);
yystate = *yyssp;
goto yyerrlab1;
/*-------------------------------------------------------------.
| yyerrlab1 -- common code for both syntax error and YYERROR. |
`-------------------------------------------------------------*/
yyerrlab1:
yyerrstatus = 3; /* Each real token shifted decrements this. */
for (;;)
{
yyn = yypact[yystate];
if (!yypact_value_is_default (yyn))
{
yyn += YYTERROR;
if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
{
yyn = yytable[yyn];
if (0 < yyn)
break;
}
}
/* Pop the current state because it cannot handle the error token. */
if (yyssp == yyss)
YYABORT;
yyreturn:
if (yychar != YYEMPTY)
{
/* Make sure we have latest lookahead translation. See comments at
user semantic actions for why this is necessary. */
yytoken = YYTRANSLATE (yychar);
yydestruct ("Cleanup: discarding lookahead",
yytoken, &yylval);
}
/* Do not reclaim the symbols of the rule whose action triggered
this YYABORT or YYACCEPT. */
YYPOPSTACK (yylen);
YY_STACK_PRINT (yyss, yyssp);
while (yyssp != yyss)
{
yydestruct ("Cleanup: popping",
yystos[*yyssp], yyvsp);
YYPOPSTACK (1);
}
#ifndef yyoverflow
if (yyss != yyssa)
YYSTACK_FREE (yyss);
#endif
#if YYERROR_VERBOSE
if (yymsg != yymsgbuf)
YYSTACK_FREE (yymsg);
#endif
return yyresult;
}
#line 947"parse.y" /* yacc.c:1906 */
/* build_eof_action - build the "<<EOF>>" action for the active start
* conditions
*/
void build_eof_action()
{
int i;
char action_text[MAXLINE];
for ( i = 1; i <= scon_stk_ptr; ++i )
{
if ( sceof[scon_stk[i]] )
format_pinpoint_message( "multiple <<EOF>> rules for start condition %s",
scname[scon_stk[i]] );
else
{
sceof[scon_stk[i]] = true;
if (previous_continued_action /* && previous action was regular */)
add_action("YY_RULE_SETUP\n");
/* This isn't a normal rule after all - don't count it as
* such, so we don't have any holes in the rule numbering
* (which make generating "rule can never match" warnings
* more difficult.
*/
--num_rules;
++num_eof_rules;
}
/* format_synerr - write out formatted syntax error */
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.