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- /***********************************************************
- Copyright 1991-1995 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 or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI 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;
- }
- }
- }
-