mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-23 11:18:54 +00:00
Code Issues Releases Activity
cbe49cc415
freebsd/contrib/byacc/btyaccpar.skel
Baptiste Daroussin 0c8de5b03c Update to byacc 20140409 
Among all the modifications, this new byacc also solves a 14 year old bug [1]

PR:		bin/23254 [1]
Submitted by:	marka@nominum.com [1]
MFC after:	3 weeks
2014-04-23 05:57:45 +00:00

1126 lines
36 KiB
Plaintext
Raw Blame History

/* $Id: btyaccpar.skel,v 1.1 2014/04/02 22:44:41 tom Exp $ */
#include "defs.h"
/* If the skeleton is changed, the banner should be changed so that */
/* the altered version can be easily distinguished from the original. */
/* */
/* The #defines included with the banner are there because they are */
/* useful in subsequent code. The macros #defined in the header or */
/* the body either are not useful outside of semantic actions or */
/* are conditional. */
%% banner
/* original parser id follows */
/* yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93" */
/* (use YYMAJOR/YYMINOR for ifdefs dependent on parser version) */
#define YYBYACC 1
%% insert VERSION here
#define YYEMPTY (-1)
#define yyclearin (yychar = YYEMPTY)
#define yyerrok (yyerrflag = 0)
#define YYRECOVERING() (yyerrflag != 0)
#define YYENOMEM (-2)
#define YYEOF 0
%% xdecls
extern int YYPARSE_DECL();
%% tables
extern const YYINT yylhs[];
extern const YYINT yylen[];
extern const YYINT yydefred[];
extern const YYINT yystos[];
extern const YYINT yydgoto[];
extern const YYINT yysindex[];
extern const YYINT yyrindex[];
%%ifdef YYBTYACC
extern const YYINT yycindex[];
%%endif
extern const YYINT yygindex[];
extern const YYINT yytable[];
extern const YYINT yycheck[];
%%ifdef YYBTYACC
extern const YYINT yyctable[];
%%endif
#if YYDEBUG
extern const char *const yyname[];
extern const char *const yyrule[];
#endif
%% global_vars
int yydebug;
int yynerrs;
%% impure_vars
int yyerrflag;
int yychar;
YYSTYPE yyval;
YYSTYPE yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE yyloc; /* position returned by actions */
YYLTYPE yylloc; /* position from the lexer */
#endif
%% hdr_defs
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
#ifndef YYLLOC_DEFAULT
#define YYLLOC_DEFAULT(loc, rhs, n) \
do \
{ \
if (n == 0) \
{ \
(loc).first_line = ((rhs)[-1]).last_line; \
(loc).first_column = ((rhs)[-1]).last_column; \
(loc).last_line = ((rhs)[-1]).last_line; \
(loc).last_column = ((rhs)[-1]).last_column; \
} \
else \
{ \
(loc).first_line = ((rhs)[ 0 ]).first_line; \
(loc).first_column = ((rhs)[ 0 ]).first_column; \
(loc).last_line = ((rhs)[n-1]).last_line; \
(loc).last_column = ((rhs)[n-1]).last_column; \
} \
} while (0)
#endif /* YYLLOC_DEFAULT */
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
%%ifdef YYBTYACC
#ifndef YYLVQUEUEGROWTH
#define YYLVQUEUEGROWTH 32
#endif
%%endif
/* define the initial stack-sizes */
#ifdef YYSTACKSIZE
#undef YYMAXDEPTH
#define YYMAXDEPTH YYSTACKSIZE
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 10000
#define YYMAXDEPTH 10000
#endif
#endif
#ifndef YYINITSTACKSIZE
#define YYINITSTACKSIZE 200
#endif
typedef struct {
unsigned stacksize;
short *s_base;
short *s_mark;
short *s_last;
YYSTYPE *l_base;
YYSTYPE *l_mark;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE *p_base;
YYLTYPE *p_mark;
#endif
} YYSTACKDATA;
%%ifdef YYBTYACC
struct YYParseState_s
{
struct YYParseState_s *save; /* Previously saved parser state */
YYSTACKDATA yystack; /* saved parser stack */
int state; /* saved parser state */
int errflag; /* saved error recovery status */
int lexeme; /* saved index of the conflict lexeme in the lexical queue */
YYINT ctry; /* saved index in yyctable[] for this conflict */
};
typedef struct YYParseState_s YYParseState;
%%endif YYBTYACC
%% hdr_vars
/* variables for the parser stack */
static YYSTACKDATA yystack;
%%ifdef YYBTYACC
/* Current parser state */
static YYParseState *yyps = 0;
/* yypath != NULL: do the full parse, starting at *yypath parser state. */
static YYParseState *yypath = 0;
/* Base of the lexical value queue */
static YYSTYPE *yylvals = 0;
/* Current position at lexical value queue */
static YYSTYPE *yylvp = 0;
/* End position of lexical value queue */
static YYSTYPE *yylve = 0;
/* The last allocated position at the lexical value queue */
static YYSTYPE *yylvlim = 0;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
/* Base of the lexical position queue */
static YYLTYPE *yylpsns = 0;
/* Current position at lexical position queue */
static YYLTYPE *yylpp = 0;
/* End position of lexical position queue */
static YYLTYPE *yylpe = 0;
/* The last allocated position at the lexical position queue */
static YYLTYPE *yylplim = 0;
#endif
/* Current position at lexical token queue */
static short *yylexp = 0;
static short *yylexemes = 0;
%%endif YYBTYACC
%% body_vars
int yyerrflag;
int yychar;
YYSTYPE yyval;
YYSTYPE yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE yyloc; /* position returned by actions */
YYLTYPE yylloc; /* position from the lexer */
#endif
/* variables for the parser stack */
YYSTACKDATA yystack;
%%ifdef YYBTYACC
/* Current parser state */
static YYParseState *yyps = 0;
/* yypath != NULL: do the full parse, starting at *yypath parser state. */
static YYParseState *yypath = 0;
/* Base of the lexical value queue */
static YYSTYPE *yylvals = 0;
/* Current position at lexical value queue */
static YYSTYPE *yylvp = 0;
/* End position of lexical value queue */
static YYSTYPE *yylve = 0;
/* The last allocated position at the lexical value queue */
static YYSTYPE *yylvlim = 0;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
/* Base of the lexical position queue */
static YYLTYPE *yylpsns = 0;
/* Current position at lexical position queue */
static YYLTYPE *yylpp = 0;
/* End position of lexical position queue */
static YYLTYPE *yylpe = 0;
/* The last allocated position at the lexical position queue */
static YYLTYPE *yylplim = 0;
#endif
/* Current position at lexical token queue */
static short *yylexp = 0;
static short *yylexemes = 0;
%%endif YYBTYACC
%% body_1
/* For use in generated program */
#define yydepth (int)(yystack.s_mark - yystack.s_base)
%%ifdef YYBTYACC
#define yytrial (yyps->save)
%%endif
#if YYDEBUG
#include <stdio.h> /* needed for printf */
#endif
#include <stdlib.h> /* needed for malloc, etc */
#include <string.h> /* needed for memset */
/* allocate initial stack or double stack size, up to YYMAXDEPTH */
static int yygrowstack(YYSTACKDATA *data)
{
int i;
unsigned newsize;
short *newss;
YYSTYPE *newvs;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE *newps;
#endif
if ((newsize = data->stacksize) == 0)
newsize = YYINITSTACKSIZE;
else if (newsize >= YYMAXDEPTH)
return YYENOMEM;
else if ((newsize *= 2) > YYMAXDEPTH)
newsize = YYMAXDEPTH;
i = (int) (data->s_mark - data->s_base);
newss = (short *)realloc(data->s_base, newsize * sizeof(*newss));
if (newss == 0)
return YYENOMEM;
data->s_base = newss;
data->s_mark = newss + i;
newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs));
if (newvs == 0)
return YYENOMEM;
data->l_base = newvs;
data->l_mark = newvs + i;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
newps = (YYLTYPE *)realloc(data->p_base, newsize * sizeof(*newps));
if (newps == 0)
return YYENOMEM;
data->p_base = newps;
data->p_mark = newps + i;
#endif
data->stacksize = newsize;
data->s_last = data->s_base + newsize - 1;
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%sdebug: stack size increased to %d\n", YYPREFIX, newsize);
#endif
return 0;
}
#if YYPURE || defined(YY_NO_LEAKS)
static void yyfreestack(YYSTACKDATA *data)
{
free(data->s_base);
free(data->l_base);
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
free(data->p_base);
#endif
memset(data, 0, sizeof(*data));
}
#else
#define yyfreestack(data) /* nothing */
#endif /* YYPURE || defined(YY_NO_LEAKS) */
%%ifdef YYBTYACC
static YYParseState *
yyNewState(unsigned size)
{
YYParseState *p = (YYParseState *) malloc(sizeof(YYParseState));
if (p == NULL) return NULL;
p->yystack.stacksize = size;
if (size == 0)
{
p->yystack.s_base = NULL;
p->yystack.l_base = NULL;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
p->yystack.p_base = NULL;
#endif
return p;
}
p->yystack.s_base = (short *) malloc(size * sizeof(short));
if (p->yystack.s_base == NULL) return NULL;
p->yystack.l_base = (YYSTYPE *) malloc(size * sizeof(YYSTYPE));
if (p->yystack.l_base == NULL) return NULL;
memset(p->yystack.l_base, 0, size * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
p->yystack.p_base = (YYLTYPE *) malloc(size * sizeof(YYLTYPE));
if (p->yystack.p_base == NULL) return NULL;
memset(p->yystack.p_base, 0, size * sizeof(YYLTYPE));
#endif
return p;
}
static void
yyFreeState(YYParseState *p)
{
yyfreestack(&p->yystack);
free(p);
}
%%endif YYBTYACC
#define YYABORT goto yyabort
#define YYREJECT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR goto yyerrlab
%%ifdef YYBTYACC
#define YYVALID do { if (yyps->save) goto yyvalid; } while(0)
#define YYVALID_NESTED do { if (yyps->save && \
yyps->save->save == 0) goto yyvalid; } while(0)
%%endif
int
YYPARSE_DECL()
{
%% body_2
int yym, yyn, yystate, yyresult;
%%ifdef YYBTYACC
int yynewerrflag;
YYParseState *yyerrctx = NULL;
%%endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE yyerror_loc_range[2]; /* position of error start & end */
#endif
#if YYDEBUG
const char *yys;
if ((yys = getenv("YYDEBUG")) != 0)
{
yyn = *yys;
if (yyn >= '0' && yyn <= '9')
yydebug = yyn - '0';
}
if (yydebug)
fprintf(stderr, "%sdebug[<# of symbols on state stack>]\n", YYPREFIX);
#endif
%%ifdef YYBTYACC
yyps = yyNewState(0); if (yyps == 0) goto yyenomem;
yyps->save = 0;
%%endif
yynerrs = 0;
yyerrflag = 0;
yychar = YYEMPTY;
yystate = 0;
#if YYPURE
memset(&yystack, 0, sizeof(yystack));
#endif
if (yystack.s_base == NULL && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
yystack.s_mark = yystack.s_base;
yystack.l_mark = yystack.l_base;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yystack.p_mark = yystack.p_base;
#endif
yystate = 0;
*yystack.s_mark = 0;
yyloop:
if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
if (yychar < 0)
{
%%ifdef YYBTYACC
do {
if (yylvp < yylve)
{
/* we're currently re-reading tokens */
yylval = *yylvp++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylloc = *yylpp++;
#endif
yychar = *yylexp++;
break;
}
if (yyps->save)
{
/* in trial mode; save scanner results for future parse attempts */
if (yylvp == yylvlim)
{ /* Enlarge lexical value queue */
int p = yylvp - yylvals;
int s = yylvlim - yylvals;
s += YYLVQUEUEGROWTH;
if ((yylexemes = (short *) realloc(yylexemes, s * sizeof(short))) == NULL) goto yyenomem;
if ((yylvals = (YYSTYPE *) realloc(yylvals, s * sizeof(YYSTYPE))) == NULL) goto yyenomem;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
if ((yylpsns = (YYLTYPE *) realloc(yylpsns, s * sizeof(YYLTYPE))) == NULL) goto yyenomem;
#endif
yylvp = yylve = yylvals + p;
yylvlim = yylvals + s;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp = yylpe = yylpsns + p;
yylplim = yylpsns + s;
#endif
yylexp = yylexemes + p;
}
*yylexp = (short) YYLEX;
*yylvp++ = yylval;
yylve++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*yylpp++ = yylloc;
yylpe++;
#endif
yychar = *yylexp++;
break;
}
/* normal operation, no conflict encountered */
%%endif YYBTYACC
yychar = YYLEX;
%%ifdef YYBTYACC
} while (0);
%%endif
if (yychar < 0) yychar = YYEOF;
/* if ((yychar = YYLEX) < 0) yychar = YYEOF; */
#if YYDEBUG
if (yydebug)
{
yys = yyname[YYTRANSLATE(yychar)];
fprintf(stderr, "%s[%d]: state %d, reading token %d (%s)",
YYDEBUGSTR, yydepth, yystate, yychar, yys);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
if (!yytrial)
%%endif
fprintf(stderr, " <%s>", YYSTYPE_TOSTRING(yychar, yylval));
#endif
fputc('\n', stderr);
}
#endif
}
%%ifdef YYBTYACC
/* Do we have a conflict? */
if (((yyn = yycindex[yystate]) != 0) && (yyn += yychar) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)
{
YYINT ctry;
if (yypath)
{
YYParseState *save;
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: CONFLICT in state %d: following successful trial parse\n",
YYDEBUGSTR, yydepth, yystate);
#endif
/* Switch to the next conflict context */
save = yypath;
yypath = save->save;
save->save = NULL;
ctry = save->ctry;
if (save->state != yystate) YYABORT;
yyFreeState(save);
}
else
{
/* Unresolved conflict - start/continue trial parse */
YYParseState *save;
#if YYDEBUG
if (yydebug)
{
fprintf(stderr, "%s[%d]: CONFLICT in state %d. ", YYDEBUGSTR, yydepth, yystate);
if (yyps->save)
fputs("ALREADY in conflict, continuing trial parse.\n", stderr);
else
fputs("Starting trial parse.\n", stderr);
}
#endif
save = yyNewState((unsigned)(yystack.s_mark - yystack.s_base + 1));
if (save == NULL) goto yyenomem;
save->save = yyps->save;
save->state = yystate;
save->errflag = yyerrflag;
save->yystack.s_mark = save->yystack.s_base + (yystack.s_mark - yystack.s_base);
memcpy (save->yystack.s_base, yystack.s_base, (yystack.s_mark - yystack.s_base + 1) * sizeof(short));
save->yystack.l_mark = save->yystack.l_base + (yystack.l_mark - yystack.l_base);
memcpy (save->yystack.l_base, yystack.l_base, (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
save->yystack.p_mark = save->yystack.p_base + (yystack.p_mark - yystack.p_base);
memcpy (save->yystack.p_base, yystack.p_base, (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
ctry = yytable[yyn];
if (yyctable[ctry] == -1)
{
#if YYDEBUG
if (yydebug && yychar >= YYEOF)
fprintf(stderr, "%s[%d]: backtracking 1 token\n", YYDEBUGSTR, yydepth);
#endif
ctry++;
}
save->ctry = ctry;
if (yyps->save == NULL)
{
/* If this is a first conflict in the stack, start saving lexemes */
if (!yylexemes)
{
yylexemes = (short *) malloc((YYLVQUEUEGROWTH) * sizeof(short));
if (yylexemes == NULL) goto yyenomem;
yylvals = (YYSTYPE *) malloc((YYLVQUEUEGROWTH) * sizeof(YYSTYPE));
if (yylvals == NULL) goto yyenomem;
yylvlim = yylvals + YYLVQUEUEGROWTH;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpsns = (YYLTYPE *) malloc((YYLVQUEUEGROWTH) * sizeof(YYLTYPE));
if (yylpsns == NULL) goto yyenomem;
yylplim = yylpsns + YYLVQUEUEGROWTH;
#endif
}
if (yylvp == yylve)
{
yylvp = yylve = yylvals;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp = yylpe = yylpsns;
#endif
yylexp = yylexemes;
if (yychar >= YYEOF)
{
*yylve++ = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*yylpe++ = yylloc;
#endif
*yylexp = (short) yychar;
yychar = YYEMPTY;
}
}
}
if (yychar >= YYEOF)
{
yylvp--;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp--;
#endif
yylexp--;
yychar = YYEMPTY;
}
save->lexeme = yylvp - yylvals;
yyps->save = save;
}
if (yytable[yyn] == ctry)
{
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: state %d, shifting to state %d\n",
YYDEBUGSTR, yydepth, yystate, yyctable[ctry]);
#endif
if (yychar < 0)
{
yylvp++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp++;
#endif
yylexp++;
}
if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM)
goto yyoverflow;
yystate = yyctable[ctry];
*++yystack.s_mark = (short) yystate;
*++yystack.l_mark = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*++yystack.p_mark = yylloc;
#endif
yychar = YYEMPTY;
if (yyerrflag > 0) --yyerrflag;
goto yyloop;
}
else
{
yyn = yyctable[ctry];
goto yyreduce;
}
} /* End of code dealing with conflicts */
%%endif YYBTYACC
if (((yyn = yysindex[yystate]) != 0) && (yyn += yychar) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)
{
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: state %d, shifting to state %d\n",
YYDEBUGSTR, yydepth, yystate, yytable[yyn]);
#endif
if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
yystate = yytable[yyn];
*++yystack.s_mark = yytable[yyn];
*++yystack.l_mark = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*++yystack.p_mark = yylloc;
#endif
yychar = YYEMPTY;
if (yyerrflag > 0) --yyerrflag;
goto yyloop;
}
if (((yyn = yyrindex[yystate]) != 0) && (yyn += yychar) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)
{
yyn = yytable[yyn];
goto yyreduce;
}
if (yyerrflag != 0) goto yyinrecovery;
%%ifdef YYBTYACC
yynewerrflag = 1;
goto yyerrhandler;
goto yyerrlab;
yyerrlab:
yynewerrflag = 0;
yyerrhandler:
while (yyps->save)
{
int ctry;
YYParseState *save = yyps->save;
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: ERROR in state %d, CONFLICT BACKTRACKING to state %d, %d tokens\n",
YYDEBUGSTR, yydepth, yystate, yyps->save->state,
(int)(yylvp - yylvals - yyps->save->lexeme));
#endif
/* Memorize most forward-looking error state in case it's really an error. */
if (yyerrctx == NULL || yyerrctx->lexeme < yylvp - yylvals)
{
/* Free old saved error context state */
if (yyerrctx) yyFreeState(yyerrctx);
/* Create and fill out new saved error context state */
yyerrctx = yyNewState((unsigned)(yystack.s_mark - yystack.s_base + 1));
if (yyerrctx == NULL) goto yyenomem;
yyerrctx->save = yyps->save;
yyerrctx->state = yystate;
yyerrctx->errflag = yyerrflag;
yyerrctx->yystack.s_mark = yyerrctx->yystack.s_base + (yystack.s_mark - yystack.s_base);
memcpy (yyerrctx->yystack.s_base, yystack.s_base, (yystack.s_mark - yystack.s_base + 1) * sizeof(short));
yyerrctx->yystack.l_mark = yyerrctx->yystack.l_base + (yystack.l_mark - yystack.l_base);
memcpy (yyerrctx->yystack.l_base, yystack.l_base, (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yyerrctx->yystack.p_mark = yyerrctx->yystack.p_base + (yystack.p_mark - yystack.p_base);
memcpy (yyerrctx->yystack.p_base, yystack.p_base, (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
yyerrctx->lexeme = yylvp - yylvals;
}
yylvp = yylvals + save->lexeme;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp = yylpsns + save->lexeme;
#endif
yylexp = yylexemes + save->lexeme;
yychar = YYEMPTY;
yystack.s_mark = yystack.s_base + (save->yystack.s_mark - save->yystack.s_base);
memcpy (yystack.s_base, save->yystack.s_base, (yystack.s_mark - yystack.s_base + 1) * sizeof(short));
yystack.l_mark = yystack.l_base + (save->yystack.l_mark - save->yystack.l_base);
memcpy (yystack.l_base, save->yystack.l_base, (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yystack.p_mark = yystack.p_base + (save->yystack.p_mark - save->yystack.p_base);
memcpy (yystack.p_base, save->yystack.p_base, (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
ctry = ++save->ctry;
yystate = save->state;
/* We tried shift, try reduce now */
if ((yyn = yyctable[ctry]) >= 0) goto yyreduce;
yyps->save = save->save;
save->save = NULL;
yyFreeState(save);
/* Nothing left on the stack -- error */
if (!yyps->save)
{
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%sdebug[%d,trial]: trial parse FAILED, entering ERROR mode\n",
YYPREFIX, yydepth);
#endif
/* Restore state as it was in the most forward-advanced error */
yylvp = yylvals + yyerrctx->lexeme;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp = yylpsns + yyerrctx->lexeme;
#endif
yylexp = yylexemes + yyerrctx->lexeme;
yychar = yylexp[-1];
yylval = yylvp[-1];
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylloc = yylpp[-1];
#endif
yystack.s_mark = yystack.s_base + (yyerrctx->yystack.s_mark - yyerrctx->yystack.s_base);
memcpy (yystack.s_base, yyerrctx->yystack.s_base, (yystack.s_mark - yystack.s_base + 1) * sizeof(short));
yystack.l_mark = yystack.l_base + (yyerrctx->yystack.l_mark - yyerrctx->yystack.l_base);
memcpy (yystack.l_base, yyerrctx->yystack.l_base, (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yystack.p_mark = yystack.p_base + (yyerrctx->yystack.p_mark - yyerrctx->yystack.p_base);
memcpy (yystack.p_base, yyerrctx->yystack.p_base, (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
yystate = yyerrctx->state;
yyFreeState(yyerrctx);
yyerrctx = NULL;
}
yynewerrflag = 1;
}
if (yynewerrflag == 0) goto yyinrecovery;
%%endif YYBTYACC
YYERROR_CALL("syntax error");
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yyerror_loc_range[0] = yylloc; /* lookahead position is error start position */
#endif
#if !YYBTYACC
goto yyerrlab;
yyerrlab:
#endif
++yynerrs;
yyinrecovery:
if (yyerrflag < 3)
{
yyerrflag = 3;
for (;;)
{
if (((yyn = yysindex[*yystack.s_mark]) != 0) && (yyn += YYERRCODE) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) YYERRCODE)
{
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: state %d, error recovery shifting to state %d\n",
YYDEBUGSTR, yydepth, *yystack.s_mark, yytable[yyn]);
#endif
if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
yystate = yytable[yyn];
*++yystack.s_mark = yytable[yyn];
*++yystack.l_mark = yylval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
/* lookahead position is error end position */
yyerror_loc_range[1] = yylloc;
YYLLOC_DEFAULT(yyloc, yyerror_loc_range, 2); /* position of error span */
*++yystack.p_mark = yyloc;
#endif
goto yyloop;
}
else
{
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: error recovery discarding state %d\n",
YYDEBUGSTR, yydepth, *yystack.s_mark);
#endif
if (yystack.s_mark <= yystack.s_base) goto yyabort;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
/* the current TOS position is the error start position */
yyerror_loc_range[0] = *yystack.p_mark;
#endif
#if defined(YYDESTRUCT_CALL)
%%ifdef YYBTYACC
if (!yytrial)
%%endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYDESTRUCT_CALL("error: discarding state",
yystos[*yystack.s_mark], yystack.l_mark, yystack.p_mark);
#else
YYDESTRUCT_CALL("error: discarding state",
yystos[*yystack.s_mark], yystack.l_mark);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
#endif /* defined(YYDESTRUCT_CALL) */
--yystack.s_mark;
--yystack.l_mark;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
--yystack.p_mark;
#endif
}
}
}
else
{
if (yychar == YYEOF) goto yyabort;
#if YYDEBUG
if (yydebug)
{
yys = yyname[YYTRANSLATE(yychar)];
fprintf(stderr, "%s[%d]: state %d, error recovery discarding token %d (%s)\n",
YYDEBUGSTR, yydepth, yystate, yychar, yys);
}
#endif
#if defined(YYDESTRUCT_CALL)
%%ifdef YYBTYACC
if (!yytrial)
%%endif
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYDESTRUCT_CALL("error: discarding token", yychar, &yylval, &yylloc);
#else
YYDESTRUCT_CALL("error: discarding token", yychar, &yylval);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
#endif /* defined(YYDESTRUCT_CALL) */
yychar = YYEMPTY;
goto yyloop;
}
yyreduce:
yym = yylen[yyn];
#if YYDEBUG
if (yydebug)
{
fprintf(stderr, "%s[%d]: state %d, reducing by rule %d (%s)",
YYDEBUGSTR, yydepth, yystate, yyn, yyrule[yyn]);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
if (!yytrial)
%%endif
if (yym > 0)
{
int i;
fputc('<', stderr);
for (i = yym; i > 0; i--)
{
if (i != yym) fputs(", ", stderr);
fputs(YYSTYPE_TOSTRING(yystos[yystack.s_mark[1-i]],
yystack.l_mark[1-i]), stderr);
}
fputc('>', stderr);
}
#endif
fputc('\n', stderr);
}
#endif
if (yym > 0)
yyval = yystack.l_mark[1-yym];
else
memset(&yyval, 0, sizeof yyval);
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
/* Perform position reduction */
memset(&yyloc, 0, sizeof(yyloc));
%%ifdef YYBTYACC
if (!yytrial)
%%endif
{
YYLLOC_DEFAULT(yyloc, &yystack.p_mark[1-yym], yym);
/* just in case YYERROR is invoked within the action, save
the start of the rhs as the error start position */
yyerror_loc_range[0] = yystack.p_mark[1-yym];
}
#endif
switch (yyn)
{
%% trailer
default:
break;
}
yystack.s_mark -= yym;
yystate = *yystack.s_mark;
yystack.l_mark -= yym;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yystack.p_mark -= yym;
#endif
yym = yylhs[yyn];
if (yystate == 0 && yym == 0)
{
#if YYDEBUG
if (yydebug)
{
fprintf(stderr, "%s[%d]: after reduction, ", YYDEBUGSTR, yydepth);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
if (!yytrial)
%%endif
fprintf(stderr, "result is <%s>, ", YYSTYPE_TOSTRING(yystos[YYFINAL], yyval));
#endif
fprintf(stderr, "shifting from state 0 to final state %d\n", YYFINAL);
}
#endif
yystate = YYFINAL;
*++yystack.s_mark = YYFINAL;
*++yystack.l_mark = yyval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*++yystack.p_mark = yyloc;
#endif
if (yychar < 0)
{
%%ifdef YYBTYACC
do {
if (yylvp < yylve)
{
/* we're currently re-reading tokens */
yylval = *yylvp++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylloc = *yylpp++;
#endif
yychar = *yylexp++;
break;
}
if (yyps->save)
{
/* in trial mode; save scanner results for future parse attempts */
if (yylvp == yylvlim)
{ /* Enlarge lexical value queue */
int p = yylvp - yylvals;
int s = yylvlim - yylvals;
s += YYLVQUEUEGROWTH;
if ((yylexemes = (short *) realloc(yylexemes, s * sizeof(short))) == NULL)
goto yyenomem;
if ((yylvals = (YYSTYPE *) realloc(yylvals, s * sizeof(YYSTYPE))) == NULL)
goto yyenomem;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
if ((yylpsns = (YYLTYPE *) realloc(yylpsns, s * sizeof(YYLTYPE))) == NULL)
goto yyenomem;
#endif
yylvp = yylve = yylvals + p;
yylvlim = yylvals + s;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp = yylpe = yylpsns + p;
yylplim = yylpsns + s;
#endif
yylexp = yylexemes + p;
}
*yylexp = (short) YYLEX;
*yylvp++ = yylval;
yylve++;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*yylpp++ = yylloc;
yylpe++;
#endif
yychar = *yylexp++;
break;
}
/* normal operation, no conflict encountered */
%%endif YYBTYACC
yychar = YYLEX;
%%ifdef YYBTYACC
} while (0);
%%endif
if (yychar < 0) yychar = YYEOF;
/* if ((yychar = YYLEX) < 0) yychar = YYEOF; */
#if YYDEBUG
if (yydebug)
{
yys = yyname[YYTRANSLATE(yychar)];
fprintf(stderr, "%s[%d]: state %d, reading %d (%s)\n",
YYDEBUGSTR, yydepth, YYFINAL, yychar, yys);
}
#endif
}
if (yychar == YYEOF) goto yyaccept;
goto yyloop;
}
if (((yyn = yygindex[yym]) != 0) && (yyn += yystate) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yystate)
yystate = yytable[yyn];
else
yystate = yydgoto[yym];
#if YYDEBUG
if (yydebug)
{
fprintf(stderr, "%s[%d]: after reduction, ", YYDEBUGSTR, yydepth);
#ifdef YYSTYPE_TOSTRING
%%ifdef YYBTYACC
if (!yytrial)
%%endif
fprintf(stderr, "result is <%s>, ", YYSTYPE_TOSTRING(yystos[yystate], yyval));
#endif
fprintf(stderr, "shifting from state %d to state %d\n", *yystack.s_mark, yystate);
}
#endif
if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;
*++yystack.s_mark = (short) yystate;
*++yystack.l_mark = yyval;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
*++yystack.p_mark = yyloc;
#endif
goto yyloop;
%%ifdef YYBTYACC
/* Reduction declares that this path is valid. Set yypath and do a full parse */
yyvalid:
if (yypath) YYABORT;
while (yyps->save)
{
YYParseState *save = yyps->save;
yyps->save = save->save;
save->save = yypath;
yypath = save;
}
#if YYDEBUG
if (yydebug)
fprintf(stderr, "%s[%d]: state %d, CONFLICT trial successful, backtracking to state %d, %d tokens\n",
YYDEBUGSTR, yydepth, yystate, yypath->state, (int)(yylvp - yylvals - yypath->lexeme));
#endif
if (yyerrctx)
{
yyFreeState(yyerrctx);
yyerrctx = NULL;
}
yylvp = yylvals + yypath->lexeme;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yylpp = yylpsns + yypath->lexeme;
#endif
yylexp = yylexemes + yypath->lexeme;
yychar = YYEMPTY;
yystack.s_mark = yystack.s_base + (yypath->yystack.s_mark - yypath->yystack.s_base);
memcpy (yystack.s_base, yypath->yystack.s_base, (yystack.s_mark - yystack.s_base + 1) * sizeof(short));
yystack.l_mark = yystack.l_base + (yypath->yystack.l_mark - yypath->yystack.l_base);
memcpy (yystack.l_base, yypath->yystack.l_base, (yystack.l_mark - yystack.l_base + 1) * sizeof(YYSTYPE));
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
yystack.p_mark = yystack.p_base + (yypath->yystack.p_mark - yypath->yystack.p_base);
memcpy (yystack.p_base, yypath->yystack.p_base, (yystack.p_mark - yystack.p_base + 1) * sizeof(YYLTYPE));
#endif
yystate = yypath->state;
goto yyloop;
%%endif YYBTYACC
yyoverflow:
YYERROR_CALL("yacc stack overflow");
%%ifdef YYBTYACC
goto yyabort_nomem;
yyenomem:
YYERROR_CALL("memory exhausted");
yyabort_nomem:
%%endif
yyresult = 2;
goto yyreturn;
yyabort:
yyresult = 1;
goto yyreturn;
yyaccept:
%%ifdef YYBTYACC
if (yyps->save) goto yyvalid;
%%endif
yyresult = 0;
yyreturn:
#if defined(YYDESTRUCT_CALL)
if (yychar != YYEOF && yychar != YYEMPTY)
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYDESTRUCT_CALL("cleanup: discarding token", yychar, &yylval, &yylloc);
#else
YYDESTRUCT_CALL("cleanup: discarding token", yychar, &yylval);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
{
YYSTYPE *pv;
#if defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED)
YYLTYPE *pp;
for (pv = yystack.l_base, pp = yystack.p_base; pv <= yystack.l_mark; ++pv, ++pp)
YYDESTRUCT_CALL("cleanup: discarding state",
yystos[*(yystack.s_base + (pv - yystack.l_base))], pv, pp);
#else
for (pv = yystack.l_base; pv <= yystack.l_mark; ++pv)
YYDESTRUCT_CALL("cleanup: discarding state",
yystos[*(yystack.s_base + (pv - yystack.l_base))], pv);
#endif /* defined(YYLTYPE) || defined(YYLTYPE_IS_DECLARED) */
}
#endif /* defined(YYDESTRUCT_CALL) */
%%ifdef YYBTYACC
if (yyerrctx)
{
yyFreeState(yyerrctx);
yyerrctx = NULL;
}
while (yyps)
{
YYParseState *save = yyps;
yyps = save->save;
save->save = NULL;
yyFreeState(save);
}
while (yypath)
{
YYParseState *save = yypath;
yypath = save->save;
save->save = NULL;
yyFreeState(save);
}
%%endif YYBTYACC
yyfreestack(&yystack);
return (yyresult);
}
Reference in New Issue View Git Blame Copy Permalink