/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.GroovyCodeVisitor;
/**
* This class is a place holder for an empty expression.
* Empty expression are used in closures lists like (;). During
* class Generation this expression should be either ignored or
* replace with a null value.
*
* @author Jochen Theodorou
* @see org.codehaus.groovy.ast.stmt.EmptyStatement
*/
public class EmptyExpression extends Expression {
public static final EmptyExpression INSTANCE = new EmptyExpression();
public Expression transformExpression(ExpressionTransformer transformer) {
return this;
}
public void visit(GroovyCodeVisitor visitor) {
return;
}
}