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- /***********************************************************
- Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
- Amsterdam, The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior permission.
-
- STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
- THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
- FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* 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 *
- 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 *
- 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 tok_name[lb->lb_type];
- else {
- sprintf(buf, "%.32s(%.32s)",
- tok_name[lb->lb_type], lb->lb_str);
- return buf;
- }
- }
- }
-