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57 lines
1.1 KiB
57 lines
1.1 KiB
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/* Grammar subroutines needed by parser */ |
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#include "Python.h" |
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#include "pgenheaders.h" |
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#include "grammar.h" |
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#include "token.h" |
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/* Return the DFA for the given type */ |
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dfa * |
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PyGrammar_FindDFA(grammar *g, register int type) |
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{ |
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register dfa *d; |
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#if 1 |
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/* Massive speed-up */ |
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d = &g->g_dfa[type - NT_OFFSET]; |
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assert(d->d_type == type); |
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return d; |
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#else |
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/* Old, slow version */ |
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register int i; |
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for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) { |
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if (d->d_type == type) |
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return d; |
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} |
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assert(0); |
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/* NOTREACHED */ |
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#endif |
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} |
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char * |
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PyGrammar_LabelRepr(label *lb) |
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{ |
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static char buf[100]; |
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if (lb->lb_type == ENDMARKER) |
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return "EMPTY"; |
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else if (ISNONTERMINAL(lb->lb_type)) { |
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if (lb->lb_str == NULL) { |
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PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type); |
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return buf; |
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} |
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else |
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return lb->lb_str; |
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} |
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else { |
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if (lb->lb_str == NULL) |
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return _PyParser_TokenNames[lb->lb_type]; |
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else { |
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PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)", |
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_PyParser_TokenNames[lb->lb_type], lb->lb_str); |
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return buf; |
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} |
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} |
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}
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