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PARSE.C
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1988-10-09
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31KB
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1,178 lines
/* A Bison parser, made from parse.y */
#define CHAR 258
#define NUMBER 259
#define SECTEND 260
#define SCDECL 261
#define XSCDECL 262
#define WHITESPACE 263
#define NAME 264
#define PREVCCL 265
#line 17 "parse.y"
#include "flexdef.h"
int pat, scnum, eps, headcnt, trailcnt, anyccl, lastchar, i, actvp, rulelen;
int trlcontxt, xcluflg, cclsorted, varlength;
char clower();
static int madeany = false; /* whether we've made the '.' character class */
#ifndef YYLTYPE
typedef
struct yyltype
{
int timestamp;
int first_line;
int first_column;
int last_line;
int last_column;
char *text;
}
yyltype;
#define YYLTYPE yyltype
#endif
#define YYACCEPT return(0)
#define YYABORT return(1)
#define YYERROR return(1)
#ifndef YYSTYPE
#define YYSTYPE int
#endif
#include <stdio.h>
#ifdef MSDOS
# ifdef __TURBOC__
# include <alloc.h>
# include <mem.h>
# else
# include <malloc.h>
# include <memory.h>
# endif
#endif
#define YYFINAL 81
#define YYFLAG -32768
#define YYNTBASE 31
#define YYTRANSLATE(x) (yytranslate[x])
static char yytranslate[] = { 0,
2, 2, 2, 2, 2, 2, 2, 2, 2, 11,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 25, 2, 16, 2, 2, 2, 26,
27, 19, 20, 15, 30, 24, 18, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 13,
2, 14, 21, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
28, 2, 29, 12, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 22, 17, 23, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 1, 2, 3, 4, 5,
6, 7, 8, 9, 10
};
static short yyrline[] = { 0,
29, 32, 41, 42, 43, 47, 50, 60, 64, 67,
70, 74, 75, 78, 86, 95, 104, 118, 128, 132,
135, 144, 152, 156, 178, 194, 201, 204, 209, 232,
240, 244, 251, 258, 265, 278, 292, 310, 332, 349,
356, 359, 362, 376, 379, 393, 421, 433, 441, 452
};
static char * yytname[] = { 0,
"error","$illegal.","CHAR","NUMBER","SECTEND","SCDECL","XSCDECL","WHITESPACE","NAME","PREVCCL",
"'\\n'","'^'","'<'","'>'","','","'$'","'|'","'/'","'*'","'+'",
"'?'","'{'","'}'","'.'","'\"'","'('","')'","'['","']'","'-'",
"goal"
};
static short yyr1[] = { 0,
31, 32, 33, 33, 33, 34, 35, 35, 36, 36,
36, 37, 37, 38, 39, 39, 39, 39, 39, 40,
41, 41, 41, 42, 42, 43, 43, 43, 44, 45,
45, 46, 46, 46, 46, 46, 46, 46, 46, 46,
46, 46, 46, 47, 47, 48, 48, 48, 49, 49
};
static short yyr2[] = { 0,
4, 0, 5, 0, 2, 1, 1, 1, 3, 1,
1, 4, 0, 0, 4, 3, 3, 2, 1, 3,
3, 1, 1, 1, 0, 3, 2, 1, 2, 2,
1, 2, 2, 2, 6, 5, 4, 1, 1, 1,
3, 3, 1, 3, 4, 4, 2, 0, 2, 0
};
static short yydefact[] = { 2,
0, 0, 0, 5, 6, 7, 8, 13, 0, 14,
0, 0, 11, 10, 0, 19, 43, 40, 0, 0,
38, 50, 0, 48, 0, 0, 25, 0, 28, 31,
39, 0, 3, 25, 23, 22, 0, 0, 0, 48,
0, 12, 0, 25, 24, 0, 29, 18, 27, 30,
32, 33, 34, 0, 9, 17, 20, 0, 49, 41,
42, 0, 47, 44, 25, 16, 26, 0, 21, 45,
0, 15, 0, 37, 46, 0, 36, 35, 0, 0,
0
};
static short yydefgoto[] = { 79,
1, 3, 8, 9, 15, 10, 12, 25, 26, 37,
48, 27, 28, 29, 30, 31, 41, 38
};
static short yypact[] = {-32768,
61, -5, 43,-32768,-32768,-32768,-32768,-32768, 8, 9,
1, 2,-32768,-32768, 28,-32768,-32768,-32768, 32, 45,
-32768,-32768, 32, 13, 42, 19, 57, 32, 32, 50,
-32768, 55,-32768, 57,-32768,-32768, 62, 15, 34,-32768,
4,-32768, 32, 57,-32768, 32,-32768,-32768, 32, 50,
-32768,-32768,-32768, 74,-32768,-32768,-32768, 56,-32768,-32768,
-32768, 5, -17,-32768, 57,-32768, 32, 40,-32768,-32768,
76,-32768, 0,-32768,-32768, 36,-32768,-32768, 80, 81,
-32768
};
static short yypgoto[] = {-32768,
-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
-33, -2,-32768, -9, -29,-32768, 44,-32768
};
#define YYLAST 84
static short yytable[] = { 50,
56, 13, 16, 76, 17, 4, 63, 63, -1, 14,
66, 18, 71, 19, 20, 11, 34, 59, 49, 50,
39, 17, 77, 44, 40, 21, 22, 23, 18, 24,
43, 72, 64, 70, 17, 32, 67, 50, 33, 60,
65, 18, 21, 22, 23, 35, 24, 5, 6, 7,
46, 47, 42, 36, 73, 21, 22, 23, 78, 24,
61, 2, 74, 55, 69, -4, -4, -4, 51, 52,
53, 54, 45, 46, 47, 57, 58, 68, 75, 80,
81, 0, 0, 62
};
static short yycheck[] = { 29,
34, 1, 1, 4, 3, 11, 3, 3, 0, 9,
44, 10, 30, 12, 13, 8, 19, 3, 28, 49,
23, 3, 23, 26, 12, 24, 25, 26, 10, 28,
12, 65, 29, 29, 3, 8, 46, 67, 11, 25,
43, 10, 24, 25, 26, 1, 28, 5, 6, 7,
17, 18, 11, 9, 15, 24, 25, 26, 23, 28,
27, 1, 23, 9, 9, 5, 6, 7, 19, 20,
21, 22, 16, 17, 18, 14, 15, 4, 3, 0,
0, -1, -1, 40
};
#define YYPURE 1
#line 2 "bison.simple"
/* Skeleton output parser for bison,
copyright (C) 1984 Bob Corbett and Richard Stallman
Permission is granted to anyone to make or distribute verbatim copies of
this program provided that the copyright notice and this permission notice
are preserved; and provided that the recipient is not asked to waive or
limit his right to redistribute copies as permitted by this permission
notice; and provided that anyone possessing an executable copy is granted
access to copy the source code, in machine-readable form, in some reasonable
manner.
Permission is granted to distribute derived works or enhanced versions of
this program under the above conditions with the additional condition that
the entire derivative or enhanced work must be covered by a permission
notice identical to this one.
Anything distributed as part of a package containing portions derived from
this program, which cannot in current practice perform its function usefully
in the absense of what was derived directly from this program, is to be
considered as forming, together with the latter, a single work derived from
this program, which must be entirely covered by a permission notice
identical to this one in order for distribution of the package to be
permitted.
In other words, you are welcome to use, share and improve this program. You
are forbidden to forbid anyone else to use, share and improve what you give
them. Help stamp out software-hoarding!
*/
/*
This is the parser code that is written into each bison parser when the
%semantic_parser declaration is not specified in the grammar. It was
written by Richard Stallman by simplifying the hairy parser used when
%semantic_parser is specified.
*/
/* Note: there must be only one dollar sign in this file.
It is replaced by the list of actions, each action
as one case of the switch. */
#define yyerrok (yyerrstatus = 0)
#define yyclearin (yychar = YYEMPTY)
#define YYEMPTY -2
#define YYEOF 0
#define YYFAIL goto yyerrlab;
#define YYTERROR 1
#ifndef YYIMPURE
#define YYLEX yylex()
#endif
#ifndef YYPURE
#define YYLEX yylex(&yylval, &yylloc)
#endif
/* If nonreentrant, generate the variables here */
#ifndef YYIMPURE
int yychar; /* the lookahead symbol */
YYSTYPE yylval; /* the semantic value of the */
/* lookahead symbol */
YYLTYPE yylloc; /* location data for the lookahead */
/* symbol */
int yydebug = 0; /* nonzero means print parse trace */
#endif /* YYIMPURE */
/* YYMAXDEPTH indicates the initial size of the parser's stacks */
#ifndef YYMAXDEPTH
#define YYMAXDEPTH 200
#endif
/* YYMAXLIMIT is the maximum size the stacks can grow to
(effective only if the built-in stack extension method is used). */
#ifndef YYMAXLIMIT
#define YYMAXLIMIT 10000
#endif
#line 91 "bison.simple"
int
yyparse()
{
register int yystate;
register int yyn;
register short *yyssp;
register YYSTYPE *yyvsp;
YYLTYPE *yylsp;
int yyerrstatus; /* number of tokens to shift before error messages enabled */
int yychar1; /* lookahead token as an internal (translated) token number */
#ifndef MSDOS
short yyssa[YYMAXDEPTH]; /* the state stack */
YYSTYPE yyvsa[YYMAXDEPTH]; /* the semantic value stack */
YYLTYPE yylsa[YYMAXDEPTH]; /* the location stack */
short *yyss = yyssa; /* refer to the stacks thru separate pointers */
YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
YYLTYPE *yyls = yylsa;
#else /* MSDOS */
/* refer to the stacks thru separate pointers */
short *yyss = (short *) NULL;
/* to allow yyoverflow to reallocate them elsewhere */
YYSTYPE *yyvs = (YYSTYPE *) NULL;
YYLTYPE *yyls = (YYLTYPE *) NULL;
#endif /* MSDOS */
int yymaxdepth = YYMAXDEPTH;
#ifndef YYPURE
int yychar;
YYSTYPE yylval;
YYLTYPE yylloc;
extern int yydebug;
#endif
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
int yylen;
#ifndef MSDOS
char *malloc(), *memcpy();
#endif
if (yydebug)
fprintf(stderr, "Starting parse\n");
#ifdef MSDOS
if (yyss == (short *) NULL) {
yyss = (short *) malloc(sizeof(short) * YYMAXDEPTH);
if (yyss == (short *) NULL) {
msdos_die("yyss");
}
}
if (yyvs == (YYSTYPE *) NULL) {
yyvs = (YYSTYPE *) malloc(sizeof(YYSTYPE) * YYMAXDEPTH);
if (yyvs == (YYSTYPE *) NULL) {
msdos_die("yyvs");
}
}
if (yyls == (YYLTYPE *) NULL) {
yyls = (YYLTYPE *) malloc(sizeof(YYLTYPE) * YYMAXDEPTH);
if (yyls == (YYLTYPE *) NULL) {
msdos_die("yyls");
}
}
#endif /* MSDOS */
yystate = 0;
yyerrstatus = 0;
yychar = YYEMPTY; /* Cause a token to be read. */
/* Initialize stack pointers.
Waste one element of value and location stack
so that they stay on the same level as the state stack. */
yyssp = yyss - 1;
yyvsp = yyvs;
yylsp = yyls;
/* Push a new state, which is found in yystate . */
/* In all cases, when you get here, the value and location stacks
have just been pushed. so pushing a state here evens the stacks. */
yynewstate:
*++yyssp = yystate;
if (yyssp >= yyss + yymaxdepth - 1)
{
/* Give user a chance to reallocate the stack */
/* Use copies of these so that the &'s don't force the real ones into memory. */
YYSTYPE *yyvs1 = yyvs;
YYLTYPE *yyls1 = yyls;
short *yyss1 = yyss;
/* Get the current used size of the three stacks, in elements. */
int size = yyssp - yyss + 1;
#ifdef yyoverflow
/* Each stack pointer address is followed by the size of
the data in use in that stack, in bytes. */
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yymaxdepth);
yyss = yyss1; yyvs = yyvs1; yyls = yyls1;
#else /* no yyoverflow */
#ifndef MSDOS
/* Extend the stack our own way. */
if (yymaxdepth >= YYMAXLIMIT)
yyerror("parser stack overflow");
yymaxdepth *= 2;
if (yymaxdepth > YYMAXLIMIT)
yymaxdepth = YYMAXLIMIT;
yyss = (short *) alloca (yymaxdepth * sizeof (*yyssp));
bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
yyls = (YYLTYPE *) alloca (yymaxdepth * sizeof (*yylsp));
bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
yyvs = (YYSTYPE *) alloca (yymaxdepth * sizeof (*yyvsp));
bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
#else /* MSDOS */
/* Extend the stack our own way. */
if (yymaxdepth >= YYMAXLIMIT)
yyerror("parser stack overflow");
yymaxdepth *= 2;
if (yymaxdepth > YYMAXLIMIT)
yymaxdepth = YYMAXLIMIT;
yyss = (short *) malloc(yymaxdepth * sizeof (*yyssp));
if (yyss == (short *) NULL) {
msdos_die("yyss");
}
yyls = (YYLTYPE *) malloc(yymaxdepth * sizeof (*yylsp));
if (yyls == (YYLTYPE *) NULL) {
msdos_die("yyls");
}
yyvs = (YYSTYPE *) malloc(yymaxdepth * sizeof (*yyvsp));
if (yyvs == (YYSTYPE *) NULL) {
msdos_die("yyvs");
}
memcpy((char *)yyss, (char *)yyss1, size * sizeof (*yyssp));
memcpy((char *)yyls, (char *)yyls1, size * sizeof (*yylsp));
memcpy((char *)yyvs, (char *)yyvs1, size * sizeof (*yyvsp));
free(yyss1);
free(yyls1);
free(yyvs1);
#endif /* MSDOS */
#endif /* no yyoverflow */
yyssp = yyss + size - 1;
yylsp = yyls + size - 1;
yyvsp = yyvs + size - 1;
if (yydebug)
fprintf(stderr, "Stack size increased to %d\n", yymaxdepth);
if (yyssp >= yyss + yymaxdepth - 1)
YYERROR;
}
if (yydebug)
fprintf(stderr, "Entering state %d\n", yystate);
/* Do appropriate processing given the current state. */
/* Read a lookahead token if we need one and don't already have one. */
yyresume:
/* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yydefault;
/* Not known => get a lookahead token if don't already have one. */
/* yychar is either YYEMPTY or YYEOF
or a valid token in external form. */
if (yychar == YYEMPTY)
{
yychar = YYLEX;
}
/* Convert token to internal form (in yychar1) for indexing tables with */
if (yychar <= 0) /* This means end of input. */
{
yychar1 = 0;
yychar = YYEOF; /* Don't call YYLEX any more */
if (yydebug)
fprintf(stderr, "Now at end of input.\n");
}
else
{
yychar1 = YYTRANSLATE(yychar);
if (yydebug)
fprintf(stderr, "Parsing next token; it is %d (%s)\n", yychar, yytname[yychar1]);
}
yyn += yychar1;
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
goto yydefault;
yyn = yytable[yyn];
/* yyn is what to do for this token type in this state.
Negative => reduce, -yyn is rule number.
Positive => shift, yyn is new state.
New state is final state => don't bother to shift,
just return success.
0, or most negative number => error. */
if (yyn < 0)
{
if (yyn == YYFLAG)
goto yyerrlab;
yyn = -yyn;
goto yyreduce;
}
else if (yyn == 0)
goto yyerrlab;
if (yyn == YYFINAL)
YYACCEPT;
/* Shift the lookahead token. */
if (yydebug)
fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
yychar = YYEMPTY;
*++yyvsp = yylval;
*++yylsp = yylloc;
/* count tokens shifted since error; after three, turn off error status. */
if (yyerrstatus) yyerrstatus--;
yystate = yyn;
goto yynewstate;
/* Do the default action for the current state. */
yydefault:
yyn = yydefact[yystate];
if (yyn == 0)
goto yyerrlab;
/* Do a reduction. yyn is the number of a rule to reduce with. */
yyreduce:
yylen = yyr2[yyn];
yyval = yyvsp[1-yylen]; /* implement default value of the action */
if (yydebug)
{
if (yylen == 1)
fprintf (stderr, "Reducing 1 value via line %d, ",
yyrline[yyn]);
else
fprintf (stderr, "Reducing %d values via line %d, ",
yylen, yyrline[yyn]);
}
switch (yyn) {
case 2:
#line 33 "parse.y"
{
/* initialize for processing rules */
/* create default DFA start condition */
scinstal( "INITIAL", false );
;
break;}
case 5:
#line 44 "parse.y"
{ synerr( "unknown error processing section 1" ); ;
break;}
case 7:
#line 51 "parse.y"
{
/* these productions are separate from the s1object
* rule because the semantics must be done before
* we parse the remainder of an s1object
*/
xcluflg = false;
;
break;}
case 8:
#line 61 "parse.y"
{ xcluflg = true; ;
break;}
case 9:
#line 65 "parse.y"
{ scinstal( nmstr, xcluflg ); ;
break;}
case 10:
#line 68 "parse.y"
{ scinstal( nmstr, xcluflg ); ;
break;}
case 11:
#line 71 "parse.y"
{ synerr( "bad start condition list" ); ;
break;}
case 14:
#line 79 "parse.y"
{
/* initialize for a parse of one rule */
trlcontxt = varlength = false;
trailcnt = headcnt = rulelen = 0;
;
break;}
case 15:
#line 87 "parse.y"
{
pat = link_machines( yyvsp[-1], yyvsp[0] );
add_accept( pat, headcnt, trailcnt );
for ( i = 1; i <= actvp; ++i )
scbol[actvsc[i]] = mkbranch( scbol[actvsc[i]], pat );
;
break;}
case 16:
#line 96 "parse.y"
{
pat = link_machines( yyvsp[-1], yyvsp[0] );
add_accept( pat, headcnt, trailcnt );
for ( i = 1; i <= actvp; ++i )
scset[actvsc[i]] = mkbranch( scset[actvsc[i]], pat );
;
break;}
case 17:
#line 105 "parse.y"
{
pat = link_machines( yyvsp[-1], yyvsp[0] );
add_accept( pat, headcnt, trailcnt );
/* add to all non-exclusive start conditions,
* including the default (0) start condition
*/
for ( i = 1; i <= lastsc; ++i )
if ( ! scxclu[i] )
scbol[i] = mkbranch( scbol[i], pat );
;
break;}
case 18:
#line 119 "parse.y"
{
pat = link_machines( yyvsp[-1], yyvsp[0] );
add_accept( pat, headcnt, trailcnt );
for ( i = 1; i <= lastsc; ++i )
if ( ! scxclu[i] )
scset[i] = mkbranch( scset[i], pat );
;
break;}
case 19:
#line 129 "parse.y"
{ synerr( "unrecognized rule" ); ;
break;}
case 21:
#line 136 "parse.y"
{
if ( (scnum = sclookup( nmstr )) == 0 )
synerr( "undeclared start condition" );
else
actvsc[++actvp] = scnum;
;
break;}
case 22:
#line 145 "parse.y"
{
if ( (scnum = sclookup( nmstr )) == 0 )
synerr( "undeclared start condition" );
else
actvsc[actvp = 1] = scnum;
;
break;}
case 23:
#line 153 "parse.y"
{ synerr( "bad start condition list" ); ;
break;}
case 24:
#line 157 "parse.y"
{
if ( trlcontxt )
{
synerr( "trailing context used twice" );
yyval = mkstate( SYM_EPSILON );
}
else
{
trlcontxt = true;
if ( ! varlength )
headcnt = rulelen;
++rulelen;
trailcnt = 1;
eps = mkstate( SYM_EPSILON );
yyval = link_machines( eps, mkstate( '\n' ) );
}
;
break;}
case 25:
#line 179 "parse.y"
{
yyval = mkstate( SYM_EPSILON );
if ( trlcontxt )
{
if ( varlength && headcnt == 0 )
/* both head and trail are variable-length */
synerr( "illegal trailing context" );
else
trailcnt = rulelen;
}
;
break;}
case 26:
#line 195 "parse.y"
{
varlength = true;
yyval = mkor( yyvsp[-2], yyvsp[0] );
;
break;}
case 27:
#line 202 "parse.y"
{ yyval = link_machines( yyvsp[-1], yyvsp[0] ); ;
break;}
case 28:
#line 205 "parse.y"
{ yyval = yyvsp[0]; ;
break;}
case 29:
#line 210 "parse.y"
{
/* this rule is separate from the others for "re" so
* that the reduction will occur before the trailing
* series is parsed
*/
if ( trlcontxt )
synerr( "trailing context used twice" );
else
trlcontxt = true;
if ( varlength )
/* the trailing context had better be fixed-length */
varlength = false;
else
headcnt = rulelen;
rulelen = 0;
yyval = yyvsp[-1];
;
break;}
case 30:
#line 233 "parse.y"
{
/* this is where concatenation of adjacent patterns
* gets done
*/
yyval = link_machines( yyvsp[-1], yyvsp[0] );
;
break;}
case 31:
#line 241 "parse.y"
{ yyval = yyvsp[0]; ;
break;}
case 32:
#line 245 "parse.y"
{
varlength = true;
yyval = mkclos( yyvsp[-1] );
;
break;}
case 33:
#line 252 "parse.y"
{
varlength = true;
yyval = mkposcl( yyvsp[-1] );
;
break;}
case 34:
#line 259 "parse.y"
{
varlength = true;
yyval = mkopt( yyvsp[-1] );
;
break;}
case 35:
#line 266 "parse.y"
{
varlength = true;
if ( yyvsp[-3] > yyvsp[-1] || yyvsp[-3] <= 0 )
{
synerr( "bad iteration values" );
yyval = yyvsp[-5];
}
else
yyval = mkrep( yyvsp[-5], yyvsp[-3], yyvsp[-1] );
;
break;}
case 36:
#line 279 "parse.y"
{
varlength = true;
if ( yyvsp[-2] <= 0 )
{
synerr( "iteration value must be positive" );
yyval = yyvsp[-4];
}
else
yyval = mkrep( yyvsp[-4], yyvsp[-2], INFINITY );
;
break;}
case 37:
#line 293 "parse.y"
{
/* the singleton could be something like "(foo)",
* in which case we have no idea what its length
* is, so we punt here.
*/
varlength = true;
if ( yyvsp[-1] <= 0 )
{
synerr( "iteration value must be positive" );
yyval = yyvsp[-3];
}
else
yyval = link_machines( yyvsp[-3], copysingl( yyvsp[-3], yyvsp[-1] - 1 ) );
;
break;}
case 38:
#line 311 "parse.y"
{
if ( ! madeany )
{
/* create the '.' character class */
anyccl = cclinit();
ccladd( anyccl, '\n' );
cclnegate( anyccl );
if ( useecs )
mkeccl( ccltbl + cclmap[anyccl],
ccllen[anyccl], nextecm,
ecgroup, CSIZE );
madeany = true;
}
++rulelen;
yyval = mkstate( -anyccl );
;
break;}
case 39:
#line 333 "parse.y"
{
if ( ! cclsorted )
/* sort characters for fast searching. We use a
* shell sort since this list could be large.
*/
cshell( ccltbl + cclmap[yyvsp[0]], ccllen[yyvsp[0]] );
if ( useecs )
mkeccl( ccltbl + cclmap[yyvsp[0]], ccllen[yyvsp[0]],
nextecm, ecgroup, CSIZE );
++rulelen;
yyval = mkstate( -yyvsp[0] );
;
break;}
case 40:
#line 350 "parse.y"
{
++rulelen;
yyval = mkstate( -yyvsp[0] );
;
break;}
case 41:
#line 357 "parse.y"
{ yyval = yyvsp[-1]; ;
break;}
case 42:
#line 360 "parse.y"
{ yyval = yyvsp[-1]; ;
break;}
case 43:
#line 363 "parse.y"
{
++rulelen;
if ( yyvsp[0] == '\0' )
synerr( "null in rule" );
if ( caseins && yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' )
yyvsp[0] = clower( yyvsp[0] );
yyval = mkstate( yyvsp[0] );
;
break;}
case 44:
#line 377 "parse.y"
{ yyval = yyvsp[-1]; ;
break;}
case 45:
#line 380 "parse.y"
{
/* *Sigh* - to be compatible Unix lex, negated ccls
* match newlines
*/
#ifdef NOTDEF
ccladd( yyvsp[-1], '\n' ); /* negated ccls don't match '\n' */
cclsorted = false; /* because we added the newline */
#endif
cclnegate( yyvsp[-1] );
yyval = yyvsp[-1];
;
break;}
case 46:
#line 394 "parse.y"
{
if ( yyvsp[-2] > yyvsp[0] )
synerr( "negative range in character class" );
else
{
if ( caseins )
{
if ( yyvsp[-2] >= 'A' && yyvsp[-2] <= 'Z' )
yyvsp[-2] = clower( yyvsp[-2] );
if ( yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' )
yyvsp[0] = clower( yyvsp[0] );
}
for ( i = yyvsp[-2]; i <= yyvsp[0]; ++i )
ccladd( yyvsp[-3], i );
/* keep track if this ccl is staying in alphabetical
* order
*/
cclsorted = cclsorted && (yyvsp[-2] > lastchar);
lastchar = yyvsp[0];
}
yyval = yyvsp[-3];
;
break;}
case 47:
#line 422 "parse.y"
{
if ( caseins )
if ( yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' )
yyvsp[0] = clower( yyvsp[0] );
ccladd( yyvsp[-1], yyvsp[0] );
cclsorted = cclsorted && (yyvsp[0] > lastchar);
lastchar = yyvsp[0];
yyval = yyvsp[-1];
;
break;}
case 48:
#line 434 "parse.y"
{
cclsorted = true;
lastchar = 0;
yyval = cclinit();
;
break;}
case 49:
#line 442 "parse.y"
{
if ( caseins )
if ( yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' )
yyvsp[0] = clower( yyvsp[0] );
++rulelen;
yyval = link_machines( yyvsp[-1], mkstate( yyvsp[0] ) );
;
break;}
case 50:
#line 453 "parse.y"
{ yyval = mkstate( SYM_EPSILON ); ;
break;}
}
/* the action file gets copied in in place of this dollarsign */
#line 375 "bison.simple"
yyvsp -= yylen;
yylsp -= yylen;
yyssp -= yylen;
if (yydebug)
{
short *ssp1 = yyss - 1;
fprintf (stderr, "state stack now", yyssp-yyss);
while (ssp1 != yyssp)
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
*++yyvsp = yyval;
yylsp++;
if (yylen == 0)
{
yylsp->first_line = yylloc.first_line;
yylsp->first_column = yylloc.first_column;
yylsp->last_line = (yylsp-1)->last_line;
yylsp->last_column = (yylsp-1)->last_column;
yylsp->text = 0;
}
else
{
yylsp->last_line = (yylsp+yylen-1)->last_line;
yylsp->last_column = (yylsp+yylen-1)->last_column;
}
/* Now "shift" the result of the reduction.
Determine what state that goes to,
based on the state we popped back to
and the rule number reduced by. */
yyn = yyr1[yyn];
yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
yystate = yytable[yystate];
else
yystate = yydefgoto[yyn - YYNTBASE];
goto yynewstate;
yyerrlab: /* here on detecting error */
if (! yyerrstatus)
/* If not already recovering from an error, report this error. */
{
yyerror("parse error");
}
if (yyerrstatus == 3)
{
/* if just tried and failed to reuse lookahead token after an error, discard it. */
/* return failure if at end of input */
if (yychar == YYEOF)
YYERROR;
if (yydebug)
fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
yychar = YYEMPTY;
}
/* Else will try to reuse lookahead token
after shifting the error token. */
yyerrstatus = 3; /* Each real token shifted decrements this */
goto yyerrhandle;
yyerrdefault: /* current state does not do anything special for the error token. */
yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
if (yyn) goto yydefault;
yyerrpop: /* pop the current state because it cannot handle the error token */
if (yyssp == yyss) YYERROR;
yyvsp--;
yylsp--;
yystate = *--yyssp;
if (yydebug)
{
short *ssp1 = yyss - 1;
fprintf (stderr, "Error: state stack now", yyssp-yyss);
while (ssp1 != yyssp)
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
yyerrhandle:
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yyerrdefault;
yyn += YYTERROR;
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
goto yyerrdefault;
yyn = yytable[yyn];
if (yyn < 0)
{
if (yyn == YYFLAG)
goto yyerrpop;
yyn = -yyn;
goto yyreduce;
}
else if (yyn == 0)
goto yyerrpop;
if (yyn == YYFINAL)
YYACCEPT;
if (yydebug)
fprintf(stderr, "Shifting error token, ");
*++yyvsp = yylval;
*++yylsp = yylloc;
yystate = yyn;
goto yynewstate;
}
#ifdef MSDOS
msdos_die(msg)
char *msg;
{
fprintf(stderr, "Unable to allocate memory: %s\n", msg);
exit(1);
}
#endif /* MSDOS */
#line 456 "parse.y"
/* synerr - report a syntax error
*
* synopsis
* char str[];
* synerr( str );
*/
synerr( str )
char str[];
{
syntaxerror = true;
fprintf( stderr, "Syntax error at line %d: %s\n", linenum, str );
}
/* yyerror - eat up an error message from the parser
*
* synopsis
* char msg[];
* yyerror( msg );
*/
yyerror( msg )
char msg[];
{
}