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Geb (pronounced "jeb") implicit assertion transform (used in conjunction with geb-core).

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/*
 * 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 ~ which creates a regular expression.
 *
 * @author James Strachan
 */
@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);
    }

    @SuppressWarnings("PMD.EmptyCatchBlock")
    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;
    }

}