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annotate regexParser/threadedSearch.cc @ 293:948428caf616

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NFA maximum match worked
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 02 Feb 2016 10:38:45 +0900
parents 868f01f1ba8e
children 63213964502a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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1 #include <stdio.h>
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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2 #include <stdlib.h>
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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3
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4 #include "regexParser.h"
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5 #include "threadedSearch.h"
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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6 #include "subsetConstruction.h"
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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7
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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
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13 static
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14 TSValue stateSkip(TSValue tsv) {
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15 tsv.current = tsv.tg->stateStart->tState;
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16 if (tsv.matchEnd) {
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17 fwrite(tsv.matchBegin,tsv.matchEnd-tsv.matchBegin,1,stdout);
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18 puts("");
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19 tsv.matchEnd = NULL;
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20 }
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21 return tsv;
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22 }
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23
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24 static
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25 TSValue stateMatch(TSValue tsv) {
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26 tsv.matchEnd = tsv.buff.buffptr; // next char of the match
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27 return tsv;
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28 }
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29
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30 TStatePtr generateTState(StatePtr state, TransitionGeneratorPtr tg) {
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31 TStatePtr tState = NEW(TState);
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32 tState->state = state;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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33 int ccvSize = 0;
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34 CharClassWalkerPtr ccw = createCharClassWalker(state->cc);
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35 while (hasNext(ccw)) {
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36 getNext(ccw);
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37 ccvSize++;
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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->stateSkip;
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42 tState->stateMatch = tg->stateMatch;
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43 } else {
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44 tState->stateSkip = tg->stateSkip;
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45 tState->stateMatch = 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;
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50 return tState;
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51 } else tState->ccv = (ccv*)malloc(sizeof(ccv)*ccvSize);
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52 ccw = createCharClassWalker(state->cc);
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53 int i = 0;
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54 while (hasNext(ccw)) {
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55 CharClassPtr cc = getNext(ccw);
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56 unsigned long begin = cc->cond.range.begin;
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57 unsigned long end = cc->cond.range.end;
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58 struct ccv *ccv = &tState->ccv[i++];
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59 ccv->begin = begin;
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60 ccv->end = end;
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61 ccv->tState = NULL;
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62 ccv->state = cc->nextState;
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63 ccv->w = cc->cond.w;
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64 }
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65 free(ccw);
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66 state->tState = tState;
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67 return tState;
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68 }
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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 #define DEBUG 0
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86
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87 TSValue tSearch(TSValue tsv) {
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88 #if DEBUG
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89 TSValuePtr tsvp = &tsv; // make tsv visible in lldb
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90 #endif
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91 next: while (tsv.buff.buffptr < tsv.buff.buffend) {
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92 unsigned char c = *tsv.buff.buffptr++;
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93 // printState(tsv.current->state);
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94 for (int i = 0; i < tsv.current->ccvSize; i++) {
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95 CCVPtr ccv = &tsv.current->ccv[i];
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96 if (c<ccv->begin) {
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97 tsv = tsv.current->stateSkip(tsv);
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98 tsv.matchBegin = tsv.buff.buffptr;
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99 goto next;
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100 } else if (c<=ccv->end) {
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101 // range matched.
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102 if (ccv->w.word) {
248
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103 // match the word.
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104 // if (not match) continue;
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105 }
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106 tsv = tsv.current->stateMatch(tsv);
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107 if (ccv->tState) {
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108 tsv.current = ccv->tState;
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109 } else {
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110 tsv.current = nextTState(ccv->state,tsv.tg);
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111 ccv->tState = tsv.current;
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112 }
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113 goto next;
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114 }
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115 }
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116 tsv = tsv.current->stateSkip(tsv);
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117 tsv.matchBegin = tsv.buff.buffptr;
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118 }
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119 #if DEBUG
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120 *tsvp = tsv;
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121 return *tsvp;
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122 #else
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123 return tsv;
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124 #endif
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125 }
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126
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127 void threadedSearch(TransitionGeneratorPtr tg, Buffer buff) {
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128 TSValue tsv;
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129 tsv.buff = buff;
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130 tsv.tg = tg;
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131 tsv.blk = NULL;
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132 tsv.tg->stateSkip = stateSkip;
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133 tsv.tg->stateMatch = stateMatch;
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134 tsv.tg->stateNothing = stateNothing;
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135 tsv.matchBegin = buff.buffptr;
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parents: 292
diff changeset
136 tsv.matchEnd = NULL;
270
c82f7e7f66f7 running ts
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 268
diff changeset
137 tsv.current = generateTState(tg->stateList,tg);
288
f2491681914e special state for start search
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 286
diff changeset
138 tg->stateStart = NEW(State);
f2491681914e special state for start search
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 286
diff changeset
139 *tg->stateStart = *tg->stateList;
f2491681914e special state for start search
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 286
diff changeset
140 tg->stateStart->accept = false; // Start state never accept
f2491681914e special state for start search
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 286
diff changeset
141 generateTState(tg->stateStart,tg);
f2491681914e special state for start search
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 286
diff changeset
142
263
292753bb31e4 fix Makefile
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 262
diff changeset
143 tSearch(tsv);
262
157f6886ba55 write driver of threadedSearch
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 260
diff changeset
144 }