Staging
v0.5.1
v0.5.1
Revision 50ce89071d212e659818825522be48acda4d2979 authored by Miss Islington (bot) on 21 February 2020, 14:09:24 UTC, committed by GitHub on 21 February 2020, 14:09:24 UTC
The current content is not rendered since the syntax is not correct. (cherry picked from commit d4d17fd2cf69e7c8f4cd03fbf2d575370945b952) Co-authored-by: Julien Danjou <julien@danjou.info>
1 parent 09db1da
grammar1.c
/* Grammar subroutines needed by parser */
#include "Python.h"
#include "pgenheaders.h"
#include "grammar.h"
#include "token.h"
/* Return the DFA for the given type */
dfa *
PyGrammar_FindDFA(grammar *g, int type)
{
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 */
int i;
for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) {
if (d->d_type == type)
return d;
}
Py_UNREACHABLE();
#endif
}
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 label");
return NULL;
}
}
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