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annotate c/regexParser/createRegexTree.cc @ 91:912d7bd51f38

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remove static variable in createRegexTree.cc
author Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
date Fri, 23 Oct 2015 18:53:46 +0900
parents 50a146c05192
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1 #include <stdlib.h>
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50a146c05192 add NodeNumber in Regex Parser tree
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
diff changeset
2 #include <stdio.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
3 #include "regexParser.h"
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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4
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
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5 NodePtr createNode(RegexInfoPtr,unsigned char,NodePtr,NodePtr);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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6 NodePtr charClass(RegexInfoPtr);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
7 NodePtr group(RegexInfoPtr);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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8 void token(RegexInfoPtr);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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9 NodePtr regexAtom(RegexInfoPtr);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
10 NodePtr regex(RegexInfoPtr);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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11
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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12 /**
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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13 * Create a node of regex parse tree.
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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14 * tokenType
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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15 * regexPosition(state)
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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16 * stateTransitionTable
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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17 */
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
diff changeset
18 NodePtr createNode(RegexInfoPtr ri,unsigned char character, NodePtr left, NodePtr right) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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19 NodePtr n = (NodePtr)malloc(sizeof(Node));
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50a146c05192 add NodeNumber in Regex Parser tree
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
diff changeset
20 n->tokenType = ri->tokenType;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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21 n->self = n;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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22 n->Value.character = character;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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23 n->left = left;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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24 n->right = right;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
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25
50a146c05192 add NodeNumber in Regex Parser tree
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
diff changeset
26 if (ri->tokenType == 'a') {
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912d7bd51f38 remove static variable in createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 89
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27 n->nodeNumber = ri->nodeNumber;
912d7bd51f38 remove static variable in createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 89
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28 ri->nodeNumber++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
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29 ri->tokenType = 0;
50a146c05192 add NodeNumber in Regex Parser tree
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
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30 }
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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31 return n;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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32 }
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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33
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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34 // <charClass> ::= '['<literal>'-'<literal>']'
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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35 NodePtr charClass(RegexInfoPtr ri) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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36 NodePtr n = (NodePtr)malloc(sizeof(Node));
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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37 unsigned char startChar = ri->ptr[0];
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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38 while (ri->ptr[0] == '-') {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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39 ri->ptr++;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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40 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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41 unsigned char endChar = ri->ptr[0];
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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42 unsigned char *charTable = (unsigned char*)malloc(sizeof(char)*256);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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43
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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44 return n;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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45 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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46
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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47 // <literal> ::= [a-z][A-Z][0-9]
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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48 NodePtr literal(RegexInfoPtr ri) {
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masa
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49 unsigned char *top = ri->ptr;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents: 87
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50 NodePtr n = createNode(ri,ri->ptr[0],0,0);
87
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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51 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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52 return n;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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53 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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54
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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55 // <group> ::= '('<regex>')'
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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56 NodePtr group(RegexInfoPtr ri) {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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57 return regex(ri);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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58 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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59
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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60
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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61
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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62 void token(RegexInfoPtr ri) {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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63 while (ri->ptr[0] != '\0') {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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64 if (ri->ptr[0] == '('){
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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65 ri->ptr++;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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66 ri->tokenType = '(';
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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67 ri->tokenValue = 0;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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68 if (ri->ptr[1] == ')') {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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69 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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70 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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71 return;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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72 } else if (ri->ptr[0] == ')') {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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73 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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74 ri->tokenType = ')';
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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75 ri->tokenValue = ri->ptr[0];
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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76 return;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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77 } else if (ri->ptr[0] == '[') {
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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78 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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79 ri->tokenType = '[';
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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80 ri->tokenValue = ri->ptr[0];
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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81 if (ri->ptr[1] == ']') {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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82 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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83 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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84 return;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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85 } else if (ri->ptr[0] == '|'){
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
86 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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87 ri->tokenType = '|';
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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88 ri->tokenValue = 0;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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89 return;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
90 } else if (ri->ptr[0] == '*'){
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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91 ri->ptr++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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92 ri->tokenType = '*';
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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93 ri->tokenValue = 0;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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94 return;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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95 } else if (ri->ptr[0] == '\\'){
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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96 // need more proccesing
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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97 /*
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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98 \277
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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99 \0xa5
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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100 \[
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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101 \\
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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102 \utf-8 etc...
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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103 */
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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104 } else {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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105 ri->tokenType = 'a';
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
106 ri->tokenValue = ri->ptr[0];
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
107 return;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
108 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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109 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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110 ri->tokenType = 0;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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111 ri->tokenValue = 0;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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112 return;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
113 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
114
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
115 // <regexAtom> ::= <literal>|<charClass>|<group>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
116 NodePtr regexAtom(RegexInfoPtr ri) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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117
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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118 token(ri);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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119 NodePtr n = NULL;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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120 if (ri->tokenType == 'a') n = literal(ri);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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121 else if (ri->tokenType == '[') n = charClass(ri);
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
122 else if (ri->tokenType == '(') n = group(ri);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
123
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
124 return n;
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
125 }
1d9bbf922bb6 add createRegexTree.cc
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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126
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127 // <regex> ::= <regexAtom>|<regexAtom>'*'|<regexAtom>'|'<regex>|<regexAtom><regex>
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128 NodePtr regex(RegexInfoPtr ri) {
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129 NodePtr n = regexAtom(ri);
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130 while (ri->ptr[0]) {
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131 token(ri);
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132 if (ri->tokenType == '*') {
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133 n = createNode(ri,'*',n,0);
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134 } else if (ri->tokenType == '|') {
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135 NodePtr n1 = regex(ri);
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136 n = createNode(ri,'|',n,n1);
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137 } else if (ri->tokenType == ')') {
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138 return n;
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139 } else {
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140 NodePtr n1 = regex(ri);
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141 n = createNode(ri,'+',n,n1);
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142 }
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143 } return n;
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144 }