#line 1 <yacc.c>
extern "C" { extern char *malloc(int), *realloc(char*,int); }
extern "C" { extern void free(void*); }
# define A 257
# define B 258
// line 3 "tmp.yacc.y"
include "grammar/yacc.h"
inline ostream& operator<<(ostream& c, token& t) { c << t.str(); return c; }
define yyclearin yychar = -1
define yyerrok yyerrflag = 0
// extern int yychar;
// extern int yyerrflag;
ifndef YYMAXDEPTH
define YYMAXDEPTH 150
endif
ifndef YYSTYPE
define YYSTYPE token
endif
// YYSTYPE yylval, yyval;
# define YYERRCODE 256
// line 13 "tmp.yacc.y"
static int yyexca[] ={
-1, 1,
0, -1,
-2, 0,
};
# define YYNPROD 6
# define YYLAST 9
static int yyact[]={
2, 3, 1, 5, 4, 0, 0, 6, 7 };
static int yypact[]={
-257, -1000, -1000, -1000, -257, -257, -1000, -1000 };
static int yypgo[]={
0, 2, 4, 3 };
static int yyr1[]={
0, 1, 2, 1, 3, 1 };
static int yyr2[]={
0, 1, 1, 6, 1, 6 };
static int yychk[]={
-1000, -1, 257, 258, -2, -3, -1, -1 };
static int yydef[]={
1, -2, 2, 4, 1, 1, 3, 5 };
// typedef struct { char *t_name; int t_val; } yytoktype;
ifndef YYDEBUG
# define YYDEBUG 0 /* don't allow debugging */
endif
if YYDEBUG
static yytoktype yytoks[] =
{
"A", 257,
"B", 258,
"-unknown-", -1 /* ends search */
};
static char * yyreds[] =
{
"-no such reduction-",
"sequence : /* empty */",
"sequence : A",
"sequence : A sequence",
"sequence : B",
"sequence : B sequence",
};
endif /* YYDEBUG */
// line 1 "/usr/lib/yaccpar"
/* @(#)yaccpar 1.10 89/04/04 SMI; from S5R3 1.10 */
/*
** Skeleton parser driver for yacc output
*/
/*
** yacc user known macros and defines
*/
define YYERROR goto yyerrlab
define YYACCEPT { free(yys); free(yyv); YYSTYPE t(0); return t; /* return YYSTYPE(0); */ }
define YYABORT { free(yys); free(yyv); return YYSTYPE(1); }
define YYBACKUP( newtoken, newvalue )\
{\
if ( yychar >= 0 || ( yyr2[ yytmp ] >> 1 ) != 1 )\
{\
yyerror( "syntax error - cannot backup" );\
goto yyerrlab;\
}\
yychar = newtoken;\
yystate = *yyps;\
yylval = newvalue;\
goto yynewstate;\
}
define YYRECOVERING() (!!yyerrflag)
ifndef YYDEBUG
# define YYDEBUG 1 /* make debugging available */
endif
/*
** user known globals
*/
// int yydebug; /* set to 1 to get debugging */
/*
** driver internal defines
*/
define YYFLAG (-1000)
/*
** static variables used by the parser
*/
// static YYSTYPE *yyv; /* value stack */
// static int *yys; /* state stack */
//
// static YYSTYPE *yypv; /* top of value stack */
// static int *yyps; /* top of state stack */
//
// static int yystate; /* current state */
// static int yytmp; /* extra var (lasts between blocks) */
//
// // int yynerrs; /* number of errors */
//
// int yyerrflag; /* error recovery flag */
// int yychar; /* current input token number */
//
/*
** yyparse - return 0 if worked, 1 if syntax error not recovered from
*/
ifndef NAME
define NAME yacc
endif
ifndef YYRTYPE
define YYRTYPE int
endif
YYSTYPE NAME::yyparse()
{
register YYSTYPE *yypvt; /* top of value stack for */
unsigned yymaxdepth = YYMAXDEPTH;
/*
** Initialize externals - yyparse may be called more than once
*/
yyv = (YYSTYPE*)malloc(yymaxdepth*sizeof(YYSTYPE));
yys = (int*)malloc(yymaxdepth*sizeof(int));
if (!yyv || !yys)
{
yyerror( "out of memory" );
return(1);
}
yypv = &yyv[-1];
yyps = &yys[-1];
yystate = 0;
yytmp = 0;
yynerrs = 0;
yyerrflag = 0;
yychar = -1;
goto yystack;
{
register YYSTYPE *yy_pv; /* top of value stack */
register int *yy_ps; /* top of state stack */
register int yy_state; /* current state */
register int yy_n; /* internal state number info */
/*
** get globals into registers.
** branch to here only if YYBACKUP was called.
*/
yynewstate:
yy_pv = yypv;
yy_ps = yyps;
yy_state = yystate;
goto yy_newstate;
/*
** get globals into registers.
** either we just started, or we just finished a reduction
*/
yystack:
yy_pv = yypv;
yy_ps = yyps;
yy_state = yystate;
/*
** top of for (;;) loop while no reductions done
*/
yy_stack:
/*
** put a state and value onto the stacks
*/
if YYDEBUG
/*
** if debugging, look up token value in list of value vs.
** name pairs. 0 and negative (-1) are special values.
** Note: linear search is used since time is not a real
** consideration while debugging.
*/
if ( yydebug )
{
register int yy_i;
(void)printf( "State %d, token ", yy_state );
if ( yychar == 0 )
(void)printf( "end-of-file\n" );
else if ( yychar < 0 )
(void)printf( "-none-\n" );
else
{
for ( yy_i = 0; yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val == yychar )
break;
}
(void)printf( "%s\n", yytoks[yy_i].t_name );
}
}
endif /* YYDEBUG */
if ( ++yy_ps >= &yys[ yymaxdepth ] ) /* room on stack? */
{
/*
** reallocate and recover. Note that pointers
** have to be reset, or bad things will happen
*/
int yyps_index = (yy_ps - yys);
int yypv_index = (yy_pv - yyv);
int yypvt_index = (yypvt - yyv);
yymaxdepth += YYMAXDEPTH;
yyv = (YYSTYPE*)realloc((char*)yyv,
yymaxdepth * sizeof(YYSTYPE));
yys = (int*)realloc((char*)yys,
yymaxdepth * sizeof(int));
if (!yyv || !yys)
{
yyerror( "yacc stack overflow" );
return(1);
}
yy_ps = yys + yyps_index;
yy_pv = yyv + yypv_index;
yypvt = yyv + yypvt_index;
}
*yy_ps = yy_state;
*++yy_pv = yyval;
/*
** we have a new state - find out what to do
*/
yy_newstate:
if ( ( yy_n = yypact[ yy_state ] ) <= YYFLAG )
goto yydefault; /* simple state */
if YYDEBUG
/*
** if debugging, need to mark whether new token grabbed
*/
yytmp = yychar < 0;
endif
if ( ( yychar < 0 ) && ( ( yychar = ( yylval = (*yylex)() ) ) < 0 ) )
yychar = 0; /* reached EOF */
if YYDEBUG
if ( yydebug && yytmp )
{
register int yy_i;
(void)printf( "Received token " );
if ( yychar == 0 )
(void)printf( "end-of-file\n" );
else if ( yychar < 0 )
(void)printf( "-none-\n" );
else
{
for ( yy_i = 0; yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val == yychar )
break;
}
(void)printf( "%s\n", yytoks[yy_i].t_name );
}
}
endif /* YYDEBUG */
if ( ( ( yy_n += yychar ) < 0 ) || ( yy_n >= YYLAST ) )
goto yydefault;
if ( yychk[ yy_n = yyact[ yy_n ] ] == yychar ) /*valid shift*/
{
yychar = -1;
yyval = yylval;
yy_state = yy_n;
if ( yyerrflag > 0 )
yyerrflag--;
goto yy_stack;
}
yydefault:
if ( ( yy_n = yydef[ yy_state ] ) == -2 )
{
if YYDEBUG
yytmp = yychar < 0;
endif
if ( ( yychar < 0 ) && ( ( yychar = ( yylval = (*yylex)() ) ) < 0 ) )
yychar = 0; /* reached EOF */
if YYDEBUG
if ( yydebug && yytmp )
{
register int yy_i;
(void)printf( "Received token " );
if ( yychar == 0 )
(void)printf( "end-of-file\n" );
else if ( yychar < 0 )
(void)printf( "-none-\n" );
else
{
for ( yy_i = 0;
yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val
== yychar )
{
break;
}
}
(void)printf( "%s\n", yytoks[yy_i].t_name );
}
}
endif /* YYDEBUG */
/*
** look through exception table
*/
{
register int *yyxi = yyexca;
while ( ( *yyxi != -1 ) ||
( yyxi[1] != yy_state ) )
{
yyxi += 2;
}
while ( ( *(yyxi += 2) >= 0 ) &&
( *yyxi != yychar ) )
;
if ( ( yy_n = yyxi[1] ) < 0 )
YYACCEPT;
}
}
/*
** check for syntax error
*/
if ( yy_n == 0 ) /* have an error */
{
/* no worry about speed here! */
switch ( yyerrflag )
{
case 0: /* new error */
yyerror( "syntax error" );
goto skip_init;
yyerrlab:
/*
** get globals into registers.
** we have a user generated syntax type error
*/
yy_pv = yypv;
yy_ps = yyps;
yy_state = yystate;
yynerrs++;
skip_init:
case 1:
case 2: /* incompletely recovered error */
/* try again... */
yyerrflag = 3;
/*
** find state where "error" is a legal
** shift action
*/
while ( yy_ps >= yys )
{
yy_n = yypact[ *yy_ps ] + YYERRCODE;
if ( yy_n >= 0 && yy_n < YYLAST &&
yychk[yyact[yy_n]] == YYERRCODE) {
/*
** simulate shift of "error"
*/
yy_state = yyact[ yy_n ];
goto yy_stack;
}
/*
** current state has no shift on
** "error", pop stack
*/
if YYDEBUG
# define _POP_ "Error recovery pops state %d, uncovers state %d\n"
if ( yydebug )
(void)printf( _POP_, *yy_ps,
yy_ps[-1] );
# undef _POP_
endif
yy_ps--;
yy_pv--;
}
/*
** there is no state on stack with "error" as
** a valid shift. give up.
*/
YYABORT;
case 3: /* no shift yet; eat a token */
if YYDEBUG
/*
** if debugging, look up token in list of
** pairs. 0 and negative shouldn't occur,
** but since timing doesn't matter when
** debugging, it doesn't hurt to leave the
** tests here.
*/
if ( yydebug )
{
register int yy_i;
(void)printf( "Error recovery discards " );
if ( yychar == 0 )
(void)printf( "token end-of-file\n" );
else if ( yychar < 0 )
(void)printf( "token -none-\n" );
else
{
for ( yy_i = 0;
yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val
== yychar )
{
break;
}
}
(void)printf( "token %s\n",
yytoks[yy_i].t_name );
}
}
endif /* YYDEBUG */
if ( yychar == 0 ) /* reached EOF. quit */
YYABORT;
yychar = -1;
goto yy_newstate;
}
}/* end if ( yy_n == 0 ) */
/*
** reduction by production yy_n
** put stack tops, etc. so things right after switch
*/
if YYDEBUG
/*
** if debugging, print the string that is the user's
** specification of the reduction which is just about
** to be done.
*/
if ( yydebug )
(void)printf( "Reduce by (%d) \"%s\"\n",
yy_n, yyreds[ yy_n ] );
endif
yytmp = yy_n; /* value to switch over */
yypvt = yy_pv; /* vars top of value stack */
/*
** Look in goto table for next state
** Sorry about using yy_state here as temporary
** register variable, but why not, if it works...
** If yyr2[ yy_n ] doesn't have the low order bit
** set, then there is no action to be done for
** this reduction. So, no saving & unsaving of
** registers done. The only difference between the
** code just after the if and the body of the if is
** the goto yy_stack in the body. This way the test
** can be made before the choice of what to do is needed.
*/
{
/* length of production doubled with extra bit */
register int yy_len = yyr2[ yy_n ];
if ( !( yy_len & 01 ) )
{
yy_len >>= 1;
yyval = ( yy_pv -= yy_len )[1]; /* $$ = $1 */
yy_state = yypgo[ yy_n = yyr1[ yy_n ] ] +
*( yy_ps -= yy_len ) + 1;
if ( yy_state >= YYLAST ||
yychk[ yy_state =
yyact[ yy_state ] ] != -yy_n )
{
yy_state = yyact[ yypgo[ yy_n ] ];
}
goto yy_stack;
}
yy_len >>= 1;
yyval = ( yy_pv -= yy_len )[1]; /* $$ = $1 */
yy_state = yypgo[ yy_n = yyr1[ yy_n ] ] +
*( yy_ps -= yy_len ) + 1;
if ( yy_state >= YYLAST ||
yychk[ yy_state = yyact[ yy_state ] ] != -yy_n )
{
yy_state = yyact[ yypgo[ yy_n ] ];
}
}
/* save until reenter driver code */
yystate = yy_state;
yyps = yy_ps;
yypv = yy_pv;
}
/*
** code supplied by user is placed in this switch
*/
switch( yytmp )
{
case 1:
// line 9 "tmp.yacc.y"
{ cout << "empty\n"; } break;
case 2:
// line 10 "tmp.yacc.y"
{ cout << yypvt[-0].str() << " : A\n"; } break;
case 4:
// line 11 "tmp.yacc.y"
{ cout << yypvt[-0] << " : B\n"; } break;
}
goto yystack; /* reset registers in driver code */
}
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Hush Online Technology
hush@cs.vu.nl
11/03/98 |
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