1
2 /* Grammar subroutines needed by parser */
3
4 #include "Python.h"
5 #include "../Include/pgenheaders.h"
6 #include "../Include/grammar.h"
7 #include "../Include/token.h"
8
9 /* Return the DFA for the given type */
10
11 dfa *
Ta27Grammar_FindDFA(grammar * g,register int type)12 Ta27Grammar_FindDFA(grammar *g, register int type)
13 {
14 register dfa *d;
15 #if 1
16 /* Massive speed-up */
17 d = &g->g_dfa[type - NT_OFFSET];
18 assert(d->d_type == type);
19 return d;
20 #else
21 /* Old, slow version */
22 register int i;
23
24 for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) {
25 if (d->d_type == type)
26 return d;
27 }
28 assert(0);
29 /* NOTREACHED */
30 #endif
31 }
32
33 char *
Ta27Grammar_LabelRepr(label * lb)34 Ta27Grammar_LabelRepr(label *lb)
35 {
36 static char buf[100];
37
38 if (lb->lb_type == ENDMARKER)
39 return "EMPTY";
40 else if (ISNONTERMINAL(lb->lb_type)) {
41 if (lb->lb_str == NULL) {
42 PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type);
43 return buf;
44 }
45 else
46 return lb->lb_str;
47 }
48 else {
49 if (lb->lb_str == NULL)
50 return _Ta27Parser_TokenNames[lb->lb_type];
51 else {
52 PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)",
53 _Ta27Parser_TokenNames[lb->lb_type], lb->lb_str);
54 return buf;
55 }
56 }
57 }
58