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annotate regexParser/transition.h @ 167:3bf2c6d6d53e pairPro

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move regexparser dir
author masa
date Sat, 19 Dec 2015 15:38:45 +0900
parents c/regexParser/transition.h@e2e717fbeb2f
children 313f1c176328
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "bitVector.h"
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3 typedef struct transition {
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4 CharClassPtr condition;
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5 BitVectorPtr nextState;
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6 struct transition *next;
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7 } Transition, *TransitionPtr;
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8
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9 typedef struct state {
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10 BitVectorPtr bitState;
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11 TransitionPtr transition;
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12 struct state *next;
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13 } State, *StatePtr;
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15 StatePtr createState(BitVectorPtr bi, TransitionPtr ts, StatePtr next);
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16 StatePtr appendState(StatePtr x, StatePtr y);
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17 TransitionPtr createTransition(CharClassPtr cc ,BitVectorPtr state);
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18 TransitionPtr appendTransition0(TransitionPtr curr,TransitionPtr next);
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19 TransitionPtr appendTransition(TransitionPtr curr,TransitionPtr next);
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20
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21 /*
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22 正規表現木を辿って transition のList をつくる
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23 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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24 重なっている状態はbitvectorのorをとる
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25 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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26
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27 nextState == 0 は正規表現の末端を表す
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28 nextState == 1 は受理状態を表す
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29 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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30
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31 | の場合は両方のListを結合する
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32 + 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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33 左のノードに*がない場合は、右のほうだけみる
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34 * 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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35 */