/*
 * 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.apache.tiles.request.velocity.autotag;

import java.io.IOException;
import java.io.Writer;

import org.apache.tiles.autotag.core.runtime.AbstractModelBody;
import org.apache.velocity.context.InternalContextAdapter;
import org.apache.velocity.runtime.parser.node.ASTBlock;

/**
 * Body abstraction for a Velocity directive body.
 */
public class VelocityModelBody extends AbstractModelBody {

    /**
     * The real body.
     */
    private ASTBlock body;

    /**
     * The Velocity context.
     */
    private InternalContextAdapter context;

    /**
     * Constructor.
     *
     * @param context       The Velocity context.
     * @param body          The real body.
     * @param defaultWriter The default writer.
     */
    public VelocityModelBody(InternalContextAdapter context, ASTBlock body, Writer defaultWriter) {
        super(defaultWriter);
        this.context = context;
        this.body = body;
    }

    @Override
    public void evaluate(Writer writer) throws IOException {
        body.render(context, writer);
    }

}
