01 /*
02 * Copyright 2003-2007 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.codehaus.groovy.ast.expr;
17
18 import org.apache.log4j.Logger;
19 import org.codehaus.groovy.ast.ClassHelper;
20 import org.codehaus.groovy.ast.GroovyCodeVisitor;
21
22 import java.lang.reflect.Method;
23
24 /**
25 * Represents a regular expression of the form ~<double quoted string> which creates
26 * a regular expression.
27 *
28 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
29 * @version $Revision$
30 */
31 @Deprecated
32 public class RegexExpression extends Expression {
33
34 private static final Logger LOG = Logger.getLogger(RegexExpression.class);
35
36 private final Expression string;
37
38 public RegexExpression(Expression string) {
39 this.string = string;
40 super.setType(ClassHelper.PATTERN_TYPE);
41 }
42
43 public void visit(GroovyCodeVisitor visitor) {
44
45 // find the visitRegexExpression if it exists, ignore otherwise
46 try {
47 Method method = visitor.getClass().getMethod("visitRegexExpression", RegexExpression.class);
48 method.invoke(visitor, this);
49 } catch (NoSuchMethodException ignored) {
50 // no method is the most likely case
51 } catch (Exception e) {
52 LOG.error("An exception occurred dispatching to visitRegexExpression", e);
53 }
54 }
55
56 public Expression transformExpression(ExpressionTransformer transformer) {
57 Expression ret = new RegexExpression(transformer.transform(string));
58 ret.setSourcePosition(this);
59 return ret;
60 }
61
62 public Expression getRegex() {
63 return string;
64 }
65
66 }
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