Mercurial > hg > Applications > Grep
annotate regexParser/threadedSearch.cc @ 286:555ca452f031
initialize state in stateSkip
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Sun, 31 Jan 2016 22:07:53 +0900 |
parents | 3ea12df96bcf |
children | f2491681914e |
rev | line source |
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247 | 1 #include <stdio.h> |
2 #include <stdlib.h> | |
3 | |
246 | 4 #include "regexParser.h" |
258
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5 #include "threadedSearch.h" |
246 | 6 #include "subsetConstruction.h" |
7 | |
272 | 8 static |
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9 TSValue stateNothing(TSValue tsv) { |
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10 return tsv; |
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11 } |
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12 |
272 | 13 static |
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14 TSValue stateSkip(TSValue tsv) { |
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15 tsv.current = tsv.tg->stateList->tState; |
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16 tsv.buff.matchBegin = tsv.buff.buffptr; |
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17 return tsv; |
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18 } |
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19 |
272 | 20 static |
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21 TSValue stateMatch(TSValue tsv) { |
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22 fwrite(tsv.buff.matchBegin,tsv.buff.buffptr-tsv.buff.matchBegin-1,1,stdout); |
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23 puts(""); |
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24 tsv.current = tsv.tg->stateList->tState; |
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25 tsv.buff.buffptr--; |
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26 tsv = stateSkip(tsv); |
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27 return tsv; |
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28 } |
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29 |
266 | 30 TStatePtr generateTState(StatePtr state, TransitionGeneratorPtr tg) { |
247 | 31 TStatePtr tState = NEW(TState); |
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32 tState->state = state; |
247 | 33 int ccvSize = 0; |
251 | 34 CharClassWalkerPtr ccw = createCharClassWalker(state->cc); |
247 | 35 while (hasNext(ccw)) { |
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36 getNext(ccw); |
247 | 37 ccvSize++; |
38 } | |
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39 tState->ccvSize = ccvSize; |
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40 if (state->accept) { |
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41 tState->stateSkip = tg->stateMatch; |
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42 tState->stateContinue = tg->stateNothing; |
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43 } else { |
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44 tState->stateSkip = tg->stateSkip; |
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45 tState->stateContinue = tg->stateNothing; |
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46 } |
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47 if (ccvSize == 0) { |
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48 tState->ccv = NULL; |
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49 state->tState = tState; |
277
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50 return tState; |
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51 } else tState->ccv = (ccv*)malloc(sizeof(ccv)*ccvSize); |
251 | 52 ccw = createCharClassWalker(state->cc); |
247 | 53 int i = 0; |
54 while (hasNext(ccw)) { | |
55 CharClassPtr cc = getNext(ccw); | |
56 unsigned long begin = cc->cond.range.begin; | |
57 unsigned long end = cc->cond.range.end; | |
58 struct ccv *ccv = &tState->ccv[i++]; | |
59 ccv->begin = begin; | |
60 ccv->end = end; | |
61 ccv->tState = NULL; | |
62 ccv->state = cc->nextState; | |
248
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63 ccv->w = cc->cond.w; |
247 | 64 } |
65 free(ccw); | |
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66 state->tState = tState; |
247 | 67 return tState; |
68 } | |
69 | |
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70 TStatePtr nextTState(BitVector bi,TransitionGeneratorPtr tg) { |
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71 // create tSearch in next state. |
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72 StatePtr state = tg->stateArray[bi.bitContainer]; |
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73 if (state == NULL) { |
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74 // on the fly subset construction. |
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75 state = createState(tg,bi); |
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76 determinize(state,tg); |
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77 tg->stateArray[bi.bitContainer] = state; |
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78 } |
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79 if (state->tState == NULL) { |
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80 generateTState(state,tg); |
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81 } |
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82 return state->tState; |
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83 } |
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84 |
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85 TSValue tSearch(TSValue tsv) { |
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86 TSValuePtr tsvp = &tsv; |
247 | 87 next: while (tsv.buff.buffptr < tsv.buff.buffend) { |
88 unsigned char c = *tsv.buff.buffptr++; | |
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89 // printState(tsv.current->state); |
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90 for (int i = 0; i < tsv.current->ccvSize; i++) { |
248
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91 CCVPtr ccv = &tsv.current->ccv[i]; |
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92 if (c<ccv->begin) { |
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93 tsv = tsv.current->stateSkip(tsv); |
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94 goto next; |
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95 } else if (c<=ccv->end) { |
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96 // range matched. |
251 | 97 if (ccv->w.word) { |
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98 // match the word. |
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99 // if (not match) continue; |
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100 } |
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101 if (ccv->tState) { |
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102 tsv.current = ccv->tState; |
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103 } else { |
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104 tsv.current = nextTState(ccv->state,tsv.tg); |
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105 ccv->tState = tsv.current; |
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106 } |
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107 // tsv = tsv.current->stateContinue(tsv); |
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108 goto next; |
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109 } |
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110 } |
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111 tsv = tsv.current->stateSkip(tsv); |
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112 } |
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113 *tsvp = tsv; |
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114 return *tsvp; |
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115 } |
262
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116 |
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117 void threadedSearch(TransitionGeneratorPtr tg, Buffer buff) { |
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118 TSValue tsv; |
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119 tsv.buff = buff; |
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120 tsv.tg = tg; |
266 | 121 tsv.result = NULL; |
122 tsv.tg->stateSkip = stateSkip; | |
123 tsv.tg->stateMatch = stateMatch; | |
124 tsv.tg->stateNothing = stateNothing; | |
270
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125 tsv.current = generateTState(tg->stateList,tg); |
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126 tSearch(tsv); |
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127 } |