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Groovy example source code file (TernaryExpression.java)

This example Groovy source code file (TernaryExpression.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

booleanexpression, booleanexpression, classnode, expression, expression, string, string, ternaryexpression, ternaryexpression

The Groovy TernaryExpression.java source code

/*
 * 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.ClassHelper;
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
 * @version $Revision: 9212 $
 */
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 ClassHelper.OBJECT_TYPE;
    }
}

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