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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.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.GroovyCodeVisitor;
import org.codehaus.groovy.syntax.Token;

/**
 * Represents a postfix expression like foo++ or bar++
 * 
 * @author James Strachan
 * @version $Revision$
 */
public class PostfixExpression extends Expression {

    private Token operation;
    private Expression expression;

    public PostfixExpression(Expression expression, Token operation) {
        this.operation = operation;
        this.expression = expression;
    }

    public String toString() {
        return super.toString() + "[" + expression + operation + "]";
    }

    public void visit(GroovyCodeVisitor visitor) {
        visitor.visitPostfixExpression(this);
    }

    public Expression transformExpression(ExpressionTransformer transformer) {
        Expression ret = new PostfixExpression(transformer.transform(expression), operation); 
        ret.setSourcePosition(this);
        ret.copyNodeMetaData(this);
        return ret;
    }

    public void setExpression(Expression expression) {
        this.expression = expression;
    }

    public Token getOperation() {
        return operation;
    }

    public Expression getExpression() {
        return expression;
    }

    public String getText() {
        return "(" + expression.getText() + operation.getText() + ")";
    }

    public ClassNode getType() {
        return expression.getType();
    }

}