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107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/***********************************************************
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Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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The Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior permission.
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STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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/* Raw interface to the parser. */
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#include "allobjects.h"
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#include "node.h"
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#include "token.h"
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#include "pythonrun.h"
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#include "graminit.h"
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#include "errcode.h"
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static object *
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node2tuple(n)
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node *n;
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{
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if (n == NULL) {
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INCREF(None);
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return None;
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}
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if (ISNONTERMINAL(TYPE(n))) {
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int i;
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object *v, *w;
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v = newtupleobject(1 + NCH(n));
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if (v == NULL)
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return v;
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w = newintobject(TYPE(n));
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if (w == NULL) {
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DECREF(v);
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return NULL;
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}
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settupleitem(v, 0, w);
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for (i = 0; i < NCH(n); i++) {
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w = node2tuple(CHILD(n, i));
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if (w == NULL) {
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DECREF(v);
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return NULL;
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}
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settupleitem(v, i+1, w);
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}
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return v;
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}
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else if (ISTERMINAL(TYPE(n))) {
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return mkvalue("(is)", TYPE(n), STR(n));
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}
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else {
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err_setstr(SystemError, "unrecognized parse tree node type");
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return NULL;
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}
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}
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static object *
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parser_parsefile(self, args)
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object *self;
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object *args;
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{
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char *filename;
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FILE *fp;
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node *n = NULL;
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object *res;
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if (!getargs(args, "s", &filename))
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return NULL;
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fp = fopen(filename, "r");
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if (fp == NULL) {
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err_errno(IOError);
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return NULL;
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}
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n = parse_file(fp, filename, file_input);
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fclose(fp);
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if (n == NULL)
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return NULL;
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res = node2tuple(n);
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freetree(n);
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return res;
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}
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static struct methodlist parser_methods[] = {
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{"parsefile", parser_parsefile},
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{0, 0} /* Sentinel */
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};
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void
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initparser()
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{
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initmodule("parser", parser_methods);
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}
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