|
1
57
58 package org.enhydra.apache.xerces.utils.regex;
59
60
61 import java.util.Vector  ;
62
63
65 class Op {
66 static final int DOT = 0;
67 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;
87 static int nofinstances = 0;
88 static final boolean COUNT = false;
89
90 static Op createDot() {
91 if (Op.COUNT) Op.nofinstances ++;
92 return new Op(Op.DOT);
93 }
94 static CharOp createChar(int data) {
95 if (Op.COUNT) Op.nofinstances ++;
96 return new CharOp(Op.CHAR, data);
97 }
98 static CharOp createAnchor(int data) {
99 if (Op.COUNT) Op.nofinstances ++;
100 return new CharOp(Op.ANCHOR, data);
101 }
102 static CharOp createCapture(int number, Op next) {
103 if (Op.COUNT) Op.nofinstances ++;
104 CharOp op = new CharOp(Op.CAPTURE, number);
105 op.next = next;
106 return op;
107 }
108 static UnionOp createUnion(int size) {
109 if (Op.COUNT) Op.nofinstances ++;
110 return new UnionOp(Op.UNION, size);
112 }
113 static ChildOp createClosure(int id) {
114 if (Op.COUNT) Op.nofinstances ++;
115 return new ModifierOp(Op.CLOSURE, id, -1);
116 }
117 static ChildOp createNonGreedyClosure() {
118 if (Op.COUNT) Op.nofinstances ++;
119 return new ChildOp(Op.NONGREEDYCLOSURE);
120 }
121 static ChildOp createQuestion(boolean nongreedy) {
122 if (Op.COUNT) Op.nofinstances ++;
123 return new ChildOp(nongreedy ? Op.NONGREEDYQUESTION : Op.QUESTION);
124 }
125 static RangeOp createRange(Token tok) {
126 if (Op.COUNT) Op.nofinstances ++;
127 return new RangeOp(Op.RANGE, tok);
128 }
129 static ChildOp createLook(int type, Op next, Op branch) {
130 if (Op.COUNT) Op.nofinstances ++;
131 ChildOp op = new ChildOp(type);
132 op.setChild(branch);
133 op.next = next;
134 return op;
135 }
136 static CharOp createBackReference(int refno) {
137 if (Op.COUNT) Op.nofinstances ++;
138 return new CharOp(Op.BACKREFERENCE, refno);
139 }
140 static StringOp createString(String literal) {
141 if (Op.COUNT) Op.nofinstances ++;
142 return new StringOp(Op.STRING, literal);
143 }
144 static ChildOp createIndependent(Op next, Op branch) {
145 if (Op.COUNT) Op.nofinstances ++;
146 ChildOp op = new ChildOp(Op.INDEPENDENT);
147 op.setChild(branch);
148 op.next = next;
149 return op;
150 }
151 static ModifierOp createModifier(Op next, Op branch, int add, int mask) {
152 if (Op.COUNT) Op.nofinstances ++;
153 ModifierOp op = new ModifierOp(Op.MODIFIER, add, mask);
154 op.setChild(branch);
155 op.next = next;
156 return op;
157 }
158 static ConditionOp createCondition(Op next, int ref, Op conditionflow, Op yesflow, Op noflow) {
159 if (Op.COUNT) Op.nofinstances ++;
160 ConditionOp op = new ConditionOp(Op.CONDITION, ref, conditionflow, yesflow, noflow);
161 op.next = next;
162 return op;
163 }
164
165 int type;
166 Op next = null;
167
168 protected Op(int type) {
169 this.type = type;
170 }
171
172 int size() { return 0;
174 }
175 Op elementAt(int index) { throw new RuntimeException ("Internal Error: type="+this.type);
177 }
178 Op getChild() { throw new RuntimeException ("Internal Error: type="+this.type);
180 }
181 int getData() { throw new RuntimeException ("Internal Error: type="+this.type);
184 }
185 int getData2() { throw new RuntimeException ("Internal Error: type="+this.type);
187 }
188 RangeToken getToken() { throw new RuntimeException ("Internal Error: type="+this.type);
190 }
191 String getString() { throw new RuntimeException ("Internal Error: type="+this.type);
193 }
194
195 static class CharOp extends Op {
197 int charData;
198 CharOp(int type, int data) {
199 super(type);
200 this.charData = data;
201 }
202 int getData() {
203 return this.charData;
204 }
205 }
206
207 static class UnionOp extends Op {
209 Vector branches;
210 UnionOp(int type, int size) {
211 super(type);
212 this.branches = new Vector (size);
213 }
214 void addElement(Op op) {
215 this.branches.addElement(op);
216 }
217 int size() {
218 return this.branches.size();
219 }
220 Op elementAt(int index) {
221 return (Op)this.branches.elementAt(index);
222 }
223 }
224
225 static class ChildOp extends Op {
227 Op child;
228 ChildOp(int type) {
229 super(type);
230 }
231 void setChild(Op child) {
232 this.child = child;
233 }
234 Op getChild() {
235 return this.child;
236 }
237 }
238 static class ModifierOp extends ChildOp {
240 int v1;
241 int v2;
242 ModifierOp(int type, int v1, int v2) {
243 super(type);
244 this.v1 = v1;
245 this.v2 = v2;
246 }
247 int getData() {
248 return this.v1;
249 }
250 int getData2() {
251 return this.v2;
252 }
253 }
254 static class RangeOp extends Op {
256 Token tok;
257 RangeOp(int type, Token tok) {
258 super(type);
259 this.tok = tok;
260 }
261 RangeToken getToken() {
262 return (RangeToken)this.tok;
263 }
264 }
265 static class StringOp extends Op {
267 String string;
268 StringOp(int type, String literal) {
269 super(type);
270 this.string = literal;
271 }
272 String getString() {
273 return this.string;
274 }
275 }
276 static class ConditionOp extends Op {
278 int refNumber;
279 Op condition;
280 Op yes;
281 Op no;
282 ConditionOp(int type, int refno, Op conditionflow, Op yesflow, Op noflow) {
283 super(type);
284 this.refNumber = refno;
285 this.condition = conditionflow;
286 this.yes = yesflow;
287 this.no = noflow;
288 }
289 }
290 }
291 |
Popular Tags |
Java API By Example, From Geeks To Geeks.