Staging
v0.8.1
v0.8.1
Revision 08bd63da6e64c49130d244ecf8f246089b9c5d9f authored by Łukasz Langa on 07 September 2020, 15:52:19 UTC, committed by Łukasz Langa on 07 September 2020, 15:52:19 UTC
1 parent 84105cb
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 label");
return NULL;
}
}
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