com.bazaarvoice.jless.ast.node.LineBreakNode.java Source code

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Here is the source code for com.bazaarvoice.jless.ast.node.LineBreakNode.java

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/**
 * Copyright 2010 Bazaarvoice, Inc.
 *
 * 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.
 *
 * @author J. Ryan Stinnett (ryan.stinnett@bazaarvoice.com)
 */

package com.bazaarvoice.jless.ast.node;

import com.bazaarvoice.jless.ast.visitor.NodeAdditionVisitor;
import com.bazaarvoice.jless.ast.visitor.NodeNavigationVisitor;
import org.apache.commons.lang.StringUtils;

/**
 * Stores only the number of line breaks that occurred in the input text.
 */
public class LineBreakNode extends LeafNode {

    private int _lineBreaks;

    public LineBreakNode(String text) {
        _lineBreaks = StringUtils.countMatches(text, "\n");
    }

    public LineBreakNode(int count) {
        _lineBreaks = count;
    }

    @Override
    protected boolean hasData() {
        return _lineBreaks > 0;
    }

    public int getLineBreaks() {
        return _lineBreaks;
    }

    @Override
    protected boolean add(NodeAdditionVisitor visitor) {
        return visitor.add(this);
    }

    @Override
    protected boolean visit(NodeNavigationVisitor visitor) {
        return visitor.visit(this);
    }

    @Override
    protected boolean visitInvisible(NodeNavigationVisitor visitor) {
        return visitor.visitInvisible(this);
    }
}