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/***********************************************************
Copyright (c) 2000, BeOpen.com.
Copyright (c) 1995-2000, Corporation for National Research Initiatives.
Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
All rights reserved.
See the file "Misc/COPYRIGHT" for information on usage and
redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
******************************************************************/
/* Grammar subroutines needed by parser */
#include "pgenheaders.h"
#include "assert.h"
#include "grammar.h"
#include "token.h"
/* Return the DFA for the given type */
dfa *
PyGrammar_FindDFA(g, type)
grammar *g;
register int type;
{
register dfa *d;
#if 1
/* Massive speed-up */
d = &g->g_dfa[type - NT_OFFSET];
assert(d->d_type == type);
return d;
#else
/* Old, slow version */
register int i;
for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) {
if (d->d_type == type)
return d;
}
assert(0);
/* NOTREACHED */
#endif
}
char *
PyGrammar_LabelRepr(lb)
label *lb;
{
static char buf[100];
if (lb->lb_type == ENDMARKER)
return "EMPTY";
else if (ISNONTERMINAL(lb->lb_type)) {
if (lb->lb_str == NULL) {
sprintf(buf, "NT%d", lb->lb_type);
return buf;
}
else
return lb->lb_str;
}
else {
if (lb->lb_str == NULL)
return _PyParser_TokenNames[lb->lb_type];
else {
sprintf(buf, "%.32s(%.32s)",
_PyParser_TokenNames[lb->lb_type], lb->lb_str);
return buf;
}
}
}
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