ExtendSectionSegment.java

/*
 * Copyright 2013 Martin Kouba
 *
 * 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.trimou.engine.segment;

import java.util.List;

import org.trimou.annotations.Internal;
import org.trimou.engine.context.ExecutionContext;

/**
 * Either defines a section to be extended/overrided, or an extending/defining
 * section.
 *
 * @author Martin Kouba
 */
@Internal
public class ExtendSectionSegment extends AbstractSectionSegment {

    public ExtendSectionSegment(String text, Origin origin,
            List<Segment> segments) {
        super(text, origin, segments);
    }

    @Override
    public SegmentType getType() {
        return SegmentType.EXTEND_SECTION;
    }

    @Override
    public Appendable execute(Appendable appendable, ExecutionContext context) {

        ExtendSectionSegment defining = (ExtendSectionSegment) context
                .getDefiningSection(getText());

        if (defining != null) {
            return defining.executeNoDefiningLookup(appendable, context);
        } else {
            return super.execute(appendable, context);
        }
    }

    protected Appendable executeNoDefiningLookup(Appendable appendable,
            ExecutionContext context) {
        return super.execute(appendable, context);
    }

}