/*

  * Copyright 2003-2007 the original author or authors.

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.codehaus.groovy.ast.expr;

 import org.apache.log4j.Logger;

 import org.codehaus.groovy.ast.ClassHelper;

 import org.codehaus.groovy.ast.GroovyCodeVisitor;

 import java.lang.reflect.Method;

 /**

  * Represents a regular expression of the form ~<double quoted string> which creates

  * a regular expression. 

  * 

  * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>

  */

 @Deprecated

 public class RegexExpression extends Expression {

     private static final Logger LOG = Logger.getLogger(RegexExpression.class);

     private final Expression string;

     public RegexExpression(Expression string) {

         this.string = string;

         super.setType(ClassHelper.PATTERN_TYPE);

     }

     public void visit(GroovyCodeVisitor visitor) {

         // find the visitRegexExpression if it exists, ignore otherwise

         try {

             Method method = visitor.getClass().getMethod("visitRegexExpression", RegexExpression.class);

             method.invoke(visitor, this);

         } catch (NoSuchMethodException ignored) {

             // no method is the most likely case

         }catch (Exception e) {

             LOG.error("An exception occurred dispatching to visitRegexExpression", e);

         }

     }

     public Expression transformExpression(ExpressionTransformer transformer) {

         Expression ret = new RegexExpression(transformer.transform(string)); 

         ret.setSourcePosition(this);

         return ret;       

     }

     public Expression getRegex() {

         return string;

     }

 }