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Groovy: A powerful, dynamic language for the JVM

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/*
 *  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.transform.sc;

import org.codehaus.groovy.ast.GroovyCodeVisitor;
import org.codehaus.groovy.ast.expr.Expression;
import org.codehaus.groovy.ast.expr.ExpressionTransformer;

import java.util.LinkedList;
import java.util.List;

/**
 * This class is used internally by the compiler to transform expressions
 * like multiple assignments into a list of assignments.
 *
 * @author Cedric Champeau
 */
public class ListOfExpressionsExpression extends Expression {

    private final List expressions;

    public ListOfExpressionsExpression() {
        expressions = new LinkedList();
    }

    public ListOfExpressionsExpression(final List expressions) {
        this.expressions = expressions;
    }

    @Override
    public Expression transformExpression(final ExpressionTransformer transformer) {
        return new ListOfExpressionsExpression(transformExpressions(expressions,transformer));
    }

    @Override
    public void visit(final GroovyCodeVisitor visitor) {
        for (Expression expression : expressions) {
            expression.visit(visitor);
        }
    }

    public void addExpression(Expression expression) {
        expressions.add(expression);
    }
}