| 1 | n/a | |
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| 2 | n/a | /* Grammar subroutines needed by parser */ |
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| 3 | n/a | |
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| 4 | n/a | #include "Python.h" |
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| 5 | n/a | #include "pgenheaders.h" |
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| 6 | n/a | #include "grammar.h" |
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| 7 | n/a | #include "token.h" |
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| 8 | n/a | |
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| 9 | n/a | /* Return the DFA for the given type */ |
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| 10 | n/a | |
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| 11 | n/a | dfa * |
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| 12 | n/a | PyGrammar_FindDFA(grammar *g, int type) |
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| 13 | n/a | { |
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| 14 | n/a | dfa *d; |
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| 15 | n/a | #if 1 |
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| 16 | n/a | /* Massive speed-up */ |
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| 17 | n/a | d = &g->g_dfa[type - NT_OFFSET]; |
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| 18 | n/a | assert(d->d_type == type); |
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| 19 | n/a | return d; |
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| 20 | n/a | #else |
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| 21 | n/a | /* Old, slow version */ |
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| 22 | n/a | int i; |
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| 23 | n/a | |
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| 24 | n/a | for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) { |
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| 25 | n/a | if (d->d_type == type) |
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| 26 | n/a | return d; |
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| 27 | n/a | } |
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| 28 | n/a | assert(0); |
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| 29 | n/a | /* NOTREACHED */ |
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| 30 | n/a | #endif |
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| 31 | n/a | } |
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| 32 | n/a | |
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| 33 | n/a | const char * |
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| 34 | n/a | PyGrammar_LabelRepr(label *lb) |
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| 35 | n/a | { |
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| 36 | n/a | static char buf[100]; |
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| 37 | n/a | |
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| 38 | n/a | if (lb->lb_type == ENDMARKER) |
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| 39 | n/a | return "EMPTY"; |
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| 40 | n/a | else if (ISNONTERMINAL(lb->lb_type)) { |
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| 41 | n/a | if (lb->lb_str == NULL) { |
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| 42 | n/a | PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type); |
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| 43 | n/a | return buf; |
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| 44 | n/a | } |
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| 45 | n/a | else |
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| 46 | n/a | return lb->lb_str; |
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| 47 | n/a | } |
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| 48 | n/a | else if (lb->lb_type < N_TOKENS) { |
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| 49 | n/a | if (lb->lb_str == NULL) |
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| 50 | n/a | return _PyParser_TokenNames[lb->lb_type]; |
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| 51 | n/a | else { |
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| 52 | n/a | PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)", |
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| 53 | n/a | _PyParser_TokenNames[lb->lb_type], lb->lb_str); |
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| 54 | n/a | return buf; |
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| 55 | n/a | } |
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| 56 | n/a | } |
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| 57 | n/a | else { |
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| 58 | n/a | Py_FatalError("invalid label"); |
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| 59 | n/a | return NULL; |
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| 60 | n/a | } |
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| 61 | n/a | } |
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