/*
$Id: DeclarationExpression.java 3419 2006-01-19 00:07:02Z blackdrag $

Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.

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("Software"), with or without modification, are permitted provided
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``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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*/
package org.codehaus.groovy.ast.expr;

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

/**
 * Represents a local variable name declaration, an expression like 
 * "def foo" or with type "String foo".
 * 
 * @author Jochen Theodorou
 * @version $Revision: 3419 $
 */
public class DeclarationExpression extends BinaryExpression {
    
    public DeclarationExpression(VariableExpression left, Token operation, Expression right) {
        super(left,operation,right);
    }

    public void visit(GroovyCodeVisitor visitor) {
        visitor.visitDeclarationExpression(this);
    }
    
    public VariableExpression getVariableExpression() {
        return (VariableExpression) this.getLeftExpression();
    }
    
    public void setLeftExpression(Expression leftExpression) {
        super.setLeftExpression((VariableExpression) leftExpression);
    }
    
    
    public Expression transformExpression(ExpressionTransformer transformer) {
        Expression ret =  new DeclarationExpression((VariableExpression) transformer.transform(getLeftExpression()), getOperation(), transformer.transform(getRightExpression()));
        ret.setSourcePosition(this);
        return ret;        
    }
}