Revision 269bf56e3d352c415ec38f93017ba8e291ddb18a authored by Miss Islington (bot) on 22 October 2021, 18:29:52 UTC, committed by GitHub on 22 October 2021, 18:29:52 UTC
(cherry picked from commit f6e8b80d20159596cf641305bad3a833bedd2f4f) Co-authored-by: Christian Heimes <christian@python.org>
1 parent aa8c344
grammar1.c
/* Grammar subroutines needed by parser */
#include "Python.h"
#include "grammar.h"
#include "token.h"
/* Return the DFA for the given type */
const dfa *
PyGrammar_FindDFA(grammar *g, int type)
{
/* Massive speed-up */
const dfa *d = &g->g_dfa[type - NT_OFFSET];
assert(d->d_type == type);
return d;
}
const char *
PyGrammar_LabelRepr(label *lb)
{
static char buf[100];
if (lb->lb_type == ENDMARKER)
return "EMPTY";
else if (ISNONTERMINAL(lb->lb_type)) {
if (lb->lb_str == NULL) {
PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type);
return buf;
}
else
return lb->lb_str;
}
else if (lb->lb_type < N_TOKENS) {
if (lb->lb_str == NULL)
return _PyParser_TokenNames[lb->lb_type];
else {
PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)",
_PyParser_TokenNames[lb->lb_type], lb->lb_str);
return buf;
}
}
else {
Py_FatalError("invalid grammar label");
return NULL;
}
}
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