/* @(#)27 1.7.1.5 src/bos/usr/ccs/bin/yacc/yaccpar, cmdlang, bos720 6/18/07 05:28:20 */
/*
* COMPONENT_NAME: (CMDLANG) Language Utilities
*
* FUNCTIONS: yyparse
* ORIGINS: 3
*/
/*
** Skeleton parser driver for yacc output
*/
/*
** yacc user known macros and defines
*/
#ifdef YYSPLIT
# define YYERROR return(-2)
#else
# define YYERROR goto yyerrlab
#endif
#ifdef YACC_MSG
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE
#endif
#include <nl_types.h>
nl_catd yyusercatd;
#endif
#define YYACCEPT return(0)
#define YYABORT return(1)
#ifndef YACC_MSG
#define YYBACKUP( newtoken, newvalue )\
{\
if ( yychar >= 0 || ( yyr2[ yytmp ] >> 1 ) != 1 )\
{\
yyerror( "syntax error - cannot backup" );\
YYERROR;\
}\
yychar = newtoken;\
yystate = *yyps;\
yylval = newvalue;\
goto yynewstate;\
}
#else
#define YYBACKUP( newtoken, newvalue )\
{\
if ( yychar >= 0 || ( yyr2[ yytmp ] >> 1 ) != 1 )\
{\
yyusercatd=catopen("yacc_user.cat", NL_CAT_LOCALE);\
yyerror(catgets(yyusercatd,1,1,"syntax error - cannot backup" ));\
YYERROR;\
}\
yychar = newtoken;\
yystate = *yyps;\
yylval = newvalue;\
goto yynewstate;\
}
#endif
#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 (-10000000)
#ifdef YYSPLIT
# define YYSCODE { \
extern int (*_yyf[])(); \
register int yyret; \
if (_yyf[yytmp]) \
if ((yyret=(*_yyf[yytmp])()) == -2) \
goto yyerrlab; \
else if (yyret>=0) return(yyret); \
}
#endif
/*
** global variables used by the parser
*/
YYSTYPE yyv[ YYMAXDEPTH ]; /* value stack */
int yys[ YYMAXDEPTH ]; /* state stack */
YYSTYPE *yypv; /* top of value stack */
YYSTYPE *yypvt; /* top of value stack for $vars */
int *yyps; /* top of state stack */
int yystate; /* current state */
int yytmp; /* extra var (lasts between blocks) */
int yynerrs; /* number of errors */
int yyerrflag; /* error recovery flag */
int yychar; /* current input token number */
#ifdef __cplusplus
#ifdef _CPP_IOSTREAMS
#include <iostream.h>
extern void yyerror (char *); /* error message routine -- iostream version */
#else
#include <stdio.h>
extern "C" void yyerror (char *); /* error message routine -- stdio version */
#endif /* _CPP_IOSTREAMS */
extern "C" int yylex(void); /* return the next token */
#endif /* __cplusplus */
/*
** yyparse - return 0 if worked, 1 if syntax error not recovered from
*/
#ifdef __cplusplus
extern "C"
#endif /* __cplusplus */
int
yyparse()
{
/*
** Initialize externals - yyparse may be called more than once
*/
yypv = yyv-1;
yyps = yys-1;
yystate = 0;
yytmp = 0;
yynerrs = 0;
yyerrflag = 0;
yychar = -1;
#ifdef YACC_MSG
yyusercatd=catopen("yacc_user.cat", NL_CAT_LOCALE);
#endif
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;
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "State " << yy_state << " token ";
if ( yychar == 0 )
cout << "end-of-file" << endl;
else if ( yychar < 0 )
cout << "-none-" << endl;
#else
printf( "State %d, token ", yy_state );
if ( yychar == 0 )
printf( "end-of-file\n" );
else if ( yychar < 0 )
printf( "-none-\n" );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
else
{
for ( yy_i = 0; yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val == yychar )
break;
}
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << yytoks[yy_i].t_name << endl;
#else
printf( "%s\n", yytoks[yy_i].t_name );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
}
}
#endif /* YYDEBUG */
if ( ++yy_ps >= yys+YYMAXDEPTH ) /* room on stack? */
{
#ifndef YACC_MSG
yyerror( "yacc stack overflow" );
#else
yyerror(catgets(yyusercatd,1,2,"yacc stack overflow" ));
#endif
YYABORT;
}
*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 = yylex() ) < 0 ) )
yychar = 0; /* reached EOF */
#if YYDEBUG
if ( yydebug && yytmp )
{
register int yy_i;
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "Received token " << endl;
if ( yychar == 0 )
cout << "end-of-file" << endl;
else if ( yychar < 0 )
cout << "-none-" << endl;
#else
printf( "Received token " );
if ( yychar == 0 )
printf( "end-of-file\n" );
else if ( yychar < 0 )
printf( "-none-\n" );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
else
{
for ( yy_i = 0; yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val == yychar )
break;
}
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << yytoks[yy_i].t_name << endl;
#else
printf( "%s\n", yytoks[yy_i].t_name );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
}
}
#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 = yylex() ) < 0 ) )
yychar = 0; /* reached EOF */
#if YYDEBUG
if ( yydebug && yytmp )
{
register int yy_i;
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "Received token " << endl;
if ( yychar == 0 )
cout << "end-of-file" << endl;
else if ( yychar < 0 )
cout << "-none-" << endl;
#else
printf( "Received token " );
if ( yychar == 0 )
printf( "end-of-file\n" );
else if ( yychar < 0 )
printf( "-none-\n" );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
else
{
for ( yy_i = 0;
yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val
== yychar )
{
break;
}
}
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << yytoks[yy_i].t_name << endl;
#else
printf( "%s\n", yytoks[yy_i].t_name );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
}
}
#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 */
#ifndef YACC_MSG
yyerror( "syntax error" );
#else
yyerror(catgets(yyusercatd,1,3,"syntax error" ));
#endif
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
if ( yydebug )
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "Error recovery pops state "
<< (*yy_ps)
<< ", uncovers state "
<< *(yy_ps-1) << endl;
#else
# define _POP_ "Error recovery pops state %d, uncovers state %d\n"
printf( _POP_, *yy_ps,
*(yy_ps-1) );
# undef _POP_
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
#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;
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "Error recovery discards ";
if ( yychar == 0 )
cout << "token end-of-file" << endl;
else if ( yychar < 0 )
cout << "token -none-" << endl;
#else
printf( "Error recovery discards " );
if ( yychar == 0 )
printf( "token end-of-file\n" );
else if ( yychar < 0 )
printf( "token -none-\n" );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
else
{
for ( yy_i = 0;
yytoks[yy_i].t_val >= 0;
yy_i++ )
{
if ( yytoks[yy_i].t_val
== yychar )
{
break;
}
}
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "token " <<
yytoks[yy_i].t_name <<
endl;
#else
printf( "token %s\n",
yytoks[yy_i].t_name );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
}
}
#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 )
#if defined(__cplusplus) && defined(_CPP_IOSTREAMS)
cout << "Reduce by (" << yy_n << ") \"" <<
yyreds[ yy_n ] << "\"\n";
#else
printf( "Reduce by (%d) \"%s\"\n",
yy_n, yyreds[ yy_n ] );
#endif /* defined(__cplusplus) && defined(_CPP_IOSTREAMS) */
#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
*/
$A
goto yystack; /* reset registers in driver code */
}