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annotate regexParser/transition.h @ 173:cca8bb5aeded pairPro

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fix
author masa
date Tue, 22 Dec 2015 18:14:17 +0900
parents 540fc12871d9
children 3be0fbcd4b52
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include "bitVector.h"
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2
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3 typedef struct transition {
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4 CharClassPtr condition;
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5 struct transition *next;
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6 } Transition, *TransitionPtr;
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7
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8 typedef struct state {
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9 TransitionPtr transition;
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10 NodePtr nextNode;
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11 struct state *next;
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12 } State, *StatePtr;
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14 TransitionPtr createTransition(CharClassPtr cc, BitVectorPtr state);
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15 TransitionPtr appendTransition0(TransitionPtr curr,TransitionPtr next);
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16 TransitionPtr appendTransition(TransitionPtr curr,TransitionPtr next);
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17
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18 /*
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19 正規表現木を辿って transition のList をつくる
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20 CharClass のかさなりを判定して重なりのない新しいCharClassをつくる
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21 重なっている状態はbitvectorのorをとる
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22 重なっている状態はそれぞれの状態について木をたどる
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23
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24 nextState == 0 は正規表現の末端を表す
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25 nextState == 1 は受理状態を表す
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26 正規表現のノードの番号 n に対応する 2^n のbitをセットした状態
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27
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28 | の場合は両方のListを結合する
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29 + の場合は左のノードに * がある場合は右のリストも結合する
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30 左のノードに*がない場合は、右のほうだけみる
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31 * は直下のリストを使って、次の状態を自分自身にする
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32 */