Mercurial > ~dholland > hg > ag > index.cgi
annotate anagram/agcore/mrule.h @ 24:a4899cdfc2d6 default tip
Obfuscate the regexps to strip off the IBM compiler's copyright banners.
I don't want bots scanning github to think they're real copyright
notices because that could cause real problems.
author | David A. Holland |
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date | Mon, 13 Jun 2022 00:40:23 -0400 |
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1 /* |
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2 * AnaGram, A System for Syntax Directed Programming |
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3 * Copyright 1993-2002 Parsifal Software. All Rights Reserved. |
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4 * See the file COPYING for license and usage terms. |
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5 * |
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6 * mrule.h - marked rules |
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7 */ |
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8 |
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9 #ifndef MRULE_H |
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10 #define MRULE_H |
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11 |
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12 #include "rule.h" |
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13 |
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14 class MarkedRule { |
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15 public: |
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16 Rule rule; |
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17 int index; |
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18 |
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19 MarkedRule() : rule(0), index(0) {} |
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20 MarkedRule(const Rule &r, int x) : rule(r), index(x) {} |
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21 MarkedRule(const Rule &r) : rule(r), index(r->length()) {} |
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22 |
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23 int operator < (const MarkedRule &r) const { |
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24 if ((int) rule < (int) r.rule) return 1; |
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25 if ((int) r.rule < (int) rule) return 0; |
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26 return index < r.index; |
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27 } |
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28 |
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29 Token leftToken() { return rule.token(index - 1); } |
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30 Token rightToken() { return rule.token(index); } |
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31 int positionLeft() { return index == 0; } |
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32 int positionRight() { return (unsigned) index == rule->length(); } |
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33 MarkedRule nextLeft() { return MarkedRule(rule, index - 1); } |
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34 MarkedRule nextRight() { return MarkedRule(rule, index + 1); } |
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35 }; |
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36 |
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37 |
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38 #endif /* MRULE_H */ |