alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Groovy example source code file (PrefixExpression.java)

This example Groovy source code file (PrefixExpression.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

classnode, expression, expression, prefixexpression, prefixexpression, string, string, token, token

The Groovy PrefixExpression.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.ClassNode;
import org.codehaus.groovy.ast.GroovyCodeVisitor;
import org.codehaus.groovy.syntax.Token;

/**
 * Represents a prefix expression like ++foo or --bar
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 6778 $
 */
public class PrefixExpression extends Expression {

    private Token operation;
    private Expression expression;

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

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

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

    public Expression transformExpression(ExpressionTransformer transformer) {
        Expression ret = new PrefixExpression(operation, transformer.transform(expression)); 
        ret.setSourcePosition(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 "(" + operation.getText() + expression.getText() + ")";
    }

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

}

Other Groovy examples (source code examples)

Here is a short list of links related to this Groovy PrefixExpression.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2024 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.