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

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

 Redistribution and use of this software and associated documentation
 ("Software"), with or without modification, are permitted provided
 that the following conditions are met:

 1. Redistributions of source code must retain copyright
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    copy of this document.

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    http://groovy.codehaus.org/

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 */
package org.codehaus.groovy.ast.expr;

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

/**
 * Represents a ternary expression (booleanExpression) ? expression : expression
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 * @version $Revision: 3419 $
 */
public class TernaryExpression extends Expression {

    private BooleanExpression booleanExpression;
    private Expression trueExpression;
    private Expression falseExpression;

    public TernaryExpression(
        BooleanExpression booleanExpression,
        Expression trueExpression,
        Expression falseExpression) {
        this.booleanExpression = booleanExpression;
        this.trueExpression = trueExpression;
        this.falseExpression = falseExpression;
    }
    public void visit(GroovyCodeVisitor visitor) {
        visitor.visitTernaryExpression(this);
    }

    public Expression transformExpression(ExpressionTransformer transformer) {
        Expression ret = new TernaryExpression(
                (BooleanExpression) transformer.transform(booleanExpression),
                transformer.transform(trueExpression),
                transformer.transform(falseExpression)); 
        ret.setSourcePosition(this);
        return ret; 
    }

    public String toString() {
        return super.toString() +"[" + booleanExpression + " ? " + trueExpression + " : " + falseExpression + "]";
    }
    
    public BooleanExpression getBooleanExpression() {
        return booleanExpression;
    }

    public Expression getFalseExpression() {
        return falseExpression;
    }

    public Expression getTrueExpression() {
        return trueExpression;
    }

    public String getText() {
        return "("
            + booleanExpression.getText()
            + ") ? "
            + trueExpression.getText()
            + " : "
            + falseExpression.getText();
    }

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