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16
17 package org.apache.xerces.impl.xpath.regex;
18
19 import java.util.Vector  ;
20
21
26 class Op {
27 static final int DOT = 0;
28 static final int CHAR = 1; static final int RANGE = 3; static final int NRANGE = 4; static final int ANCHOR = 5; static final int STRING = 6; static final int CLOSURE = 7; static final int NONGREEDYCLOSURE = 8; static final int QUESTION = 9; static final int NONGREEDYQUESTION = 10; static final int UNION = 11; static final int CAPTURE = 15; static final int BACKREFERENCE = 16; static final int LOOKAHEAD = 20; static final int NEGATIVELOOKAHEAD = 21; static final int LOOKBEHIND = 22; static final int NEGATIVELOOKBEHIND = 23; static final int INDEPENDENT = 24; static final int MODIFIER = 25; static final int CONDITION = 26;
48 static int nofinstances = 0;
49 static final boolean COUNT = false;
50
51 static Op createDot() {
52 if (Op.COUNT) Op.nofinstances ++;
53 return new Op(Op.DOT);
54 }
55 static CharOp createChar(int data) {
56 if (Op.COUNT) Op.nofinstances ++;
57 return new CharOp(Op.CHAR, data);
58 }
59 static CharOp createAnchor(int data) {
60 if (Op.COUNT) Op.nofinstances ++;
61 return new CharOp(Op.ANCHOR, data);
62 }
63 static CharOp createCapture(int number, Op next) {
64 if (Op.COUNT) Op.nofinstances ++;
65 CharOp op = new CharOp(Op.CAPTURE, number);
66 op.next = next;
67 return op;
68 }
69 static UnionOp createUnion(int size) {
70 if (Op.COUNT) Op.nofinstances ++;
71 return new UnionOp(Op.UNION, size);
73 }
74 static ChildOp createClosure(int id) {
75 if (Op.COUNT) Op.nofinstances ++;
76 return new ModifierOp(Op.CLOSURE, id, -1);
77 }
78 static ChildOp createNonGreedyClosure() {
79 if (Op.COUNT) Op.nofinstances ++;
80 return new ChildOp(Op.NONGREEDYCLOSURE);
81 }
82 static ChildOp createQuestion(boolean nongreedy) {
83 if (Op.COUNT) Op.nofinstances ++;
84 return new ChildOp(nongreedy ? Op.NONGREEDYQUESTION : Op.QUESTION);
85 }
86 static RangeOp createRange(Token tok) {
87 if (Op.COUNT) Op.nofinstances ++;
88 return new RangeOp(Op.RANGE, tok);
89 }
90 static ChildOp createLook(int type, Op next, Op branch) {
91 if (Op.COUNT) Op.nofinstances ++;
92 ChildOp op = new ChildOp(type);
93 op.setChild(branch);
94 op.next = next;
95 return op;
96 }
97 static CharOp createBackReference(int refno) {
98 if (Op.COUNT) Op.nofinstances ++;
99 return new CharOp(Op.BACKREFERENCE, refno);
100 }
101 static StringOp createString(String literal) {
102 if (Op.COUNT) Op.nofinstances ++;
103 return new StringOp(Op.STRING, literal);
104 }
105 static ChildOp createIndependent(Op next, Op branch) {
106 if (Op.COUNT) Op.nofinstances ++;
107 ChildOp op = new ChildOp(Op.INDEPENDENT);
108 op.setChild(branch);
109 op.next = next;
110 return op;
111 }
112 static ModifierOp createModifier(Op next, Op branch, int add, int mask) {
113 if (Op.COUNT) Op.nofinstances ++;
114 ModifierOp op = new ModifierOp(Op.MODIFIER, add, mask);
115 op.setChild(branch);
116 op.next = next;
117 return op;
118 }
119 static ConditionOp createCondition(Op next, int ref, Op conditionflow, Op yesflow, Op noflow) {
120 if (Op.COUNT) Op.nofinstances ++;
121 ConditionOp op = new ConditionOp(Op.CONDITION, ref, conditionflow, yesflow, noflow);
122 op.next = next;
123 return op;
124 }
125
126 int type;
127 Op next = null;
128
129 protected Op(int type) {
130 this.type = type;
131 }
132
133 int size() { return 0;
135 }
136 Op elementAt(int index) { throw new RuntimeException ("Internal Error: type="+this.type);
138 }
139 Op getChild() { throw new RuntimeException ("Internal Error: type="+this.type);
141 }
142 int getData() { throw new RuntimeException ("Internal Error: type="+this.type);
145 }
146 int getData2() { throw new RuntimeException ("Internal Error: type="+this.type);
148 }
149 RangeToken getToken() { throw new RuntimeException ("Internal Error: type="+this.type);
151 }
152 String getString() { throw new RuntimeException ("Internal Error: type="+this.type);
154 }
155
156 static class CharOp extends Op {
158 int charData;
159 CharOp(int type, int data) {
160 super(type);
161 this.charData = data;
162 }
163 int getData() {
164 return this.charData;
165 }
166 }
167
168 static class UnionOp extends Op {
170 Vector branches;
171 UnionOp(int type, int size) {
172 super(type);
173 this.branches = new Vector (size);
174 }
175 void addElement(Op op) {
176 this.branches.addElement(op);
177 }
178 int size() {
179 return this.branches.size();
180 }
181 Op elementAt(int index) {
182 return (Op)this.branches.elementAt(index);
183 }
184 }
185
186 static class ChildOp extends Op {
188 Op child;
189 ChildOp(int type) {
190 super(type);
191 }
192 void setChild(Op child) {
193 this.child = child;
194 }
195 Op getChild() {
196 return this.child;
197 }
198 }
199 static class ModifierOp extends ChildOp {
201 int v1;
202 int v2;
203 ModifierOp(int type, int v1, int v2) {
204 super(type);
205 this.v1 = v1;
206 this.v2 = v2;
207 }
208 int getData() {
209 return this.v1;
210 }
211 int getData2() {
212 return this.v2;
213 }
214 }
215 static class RangeOp extends Op {
217 Token tok;
218 RangeOp(int type, Token tok) {
219 super(type);
220 this.tok = tok;
221 }
222 RangeToken getToken() {
223 return (RangeToken)this.tok;
224 }
225 }
226 static class StringOp extends Op {
228 String string;
229 StringOp(int type, String literal) {
230 super(type);
231 this.string = literal;
232 }
233 String getString() {
234 return this.string;
235 }
236 }
237 static class ConditionOp extends Op {
239 int refNumber;
240 Op condition;
241 Op yes;
242 Op no;
243 ConditionOp(int type, int refno, Op conditionflow, Op yesflow, Op noflow) {
244 super(type);
245 this.refNumber = refno;
246 this.condition = conditionflow;
247 this.yes = yesflow;
248 this.no = noflow;
249 }
250 }
251 }
252 |
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