Mercurial > hg > Applications > Grep
annotate regexParser/transition.h @ 175:3be0fbcd4b52 pairPro
implement createTransitionGenerator
author | Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp> |
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date | Tue, 22 Dec 2015 20:27:26 +0900 |
parents | cca8bb5aeded |
children | c092dd0e1ae0 |
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1 #include "bitVector.h" |
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2 |
110 | 3 typedef struct transition { |
4 CharClassPtr condition; | |
5 struct transition *next; | |
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6 } Transition, *TransitionPtr; |
110 | 7 |
8 typedef struct state { | |
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9 BitVector bitState; |
110 | 10 TransitionPtr transition; |
173 | 11 NodePtr nextNode; |
110 | 12 struct state *next; |
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13 } State, *StatePtr; |
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14 |
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15 StatePtr createState(StatePtr state,BitVector bi); |
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16 TransitionPtr createTransition(CharClassPtr cc, BitVectorPtr state); |
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17 TransitionPtr appendTransition0(TransitionPtr curr,TransitionPtr next); |
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18 TransitionPtr appendTransition(TransitionPtr curr,TransitionPtr next); |
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19 |
110 | 20 /* |
21 正規表現木を辿って transition のList をつくる | |
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22 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 |
110 | 23 重なっている状態はbitvectorのorをとる |
24 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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25 |
110 | 26 nextState == 0 は正規表現の末端を表す |
27 nextState == 1 は受理状態を表す | |
28 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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29 |
110 | 30 | の場合は両方のListを結合する |
31 + 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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32 左のノードに*がない場合は、右のほうだけみる |
110 | 33 * は直下のリストを使って、次の状態を自分自身にする |
34 */ |