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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.
-
- ******************************************************************/
-
- /* Raw interface to the parser. */
-
- #include "allobjects.h"
- #include "node.h"
- #include "token.h"
- #include "pythonrun.h"
- #include "graminit.h"
- #include "errcode.h"
-
- object *
- node2tuple(n)
- node *n;
- {
- if (n == NULL) {
- INCREF(None);
- return None;
- }
- if (ISNONTERMINAL(TYPE(n))) {
- int i;
- object *v, *w;
- v = newtupleobject(1 + NCH(n));
- if (v == NULL)
- return v;
- w = newintobject(TYPE(n));
- if (w == NULL) {
- DECREF(v);
- return NULL;
- }
- settupleitem(v, 0, w);
- for (i = 0; i < NCH(n); i++) {
- w = node2tuple(CHILD(n, i));
- if (w == NULL) {
- DECREF(v);
- return NULL;
- }
- settupleitem(v, i+1, w);
- }
- return v;
- }
- else if (ISTERMINAL(TYPE(n))) {
- return mkvalue("(is)", TYPE(n), STR(n));
- }
- else {
- err_setstr(SystemError, "unrecognized parse tree node type");
- return NULL;
- }
- }
-
- static object *
- parser_parsefile(self, args)
- object *self;
- object *args;
- {
- char *filename;
- FILE *fp;
- node *n = NULL;
- int err;
- object *res;
- if (!getargs(args, "s", &filename))
- return NULL;
- fp = fopen(filename, "r");
- if (fp == NULL) {
- err_errno(IOError);
- return NULL;
- }
- n = parse_file(fp, filename, file_input);
- fclose(fp);
- if (n == NULL)
- return NULL;
- res = node2tuple(n);
- freetree(n);
- return res;
- }
-
- static struct methodlist parser_methods[] = {
- {"parsefile", parser_parsefile},
- {0, 0} /* Sentinel */
- };
-
- void
- initparser()
- {
- initmodule("parser", parser_methods);
- }
-