com.yahoo.document.annotation.DummySpanNode Maven / Gradle / Ivy

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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.annotation;

import java.util.Collections;
import java.util.ListIterator;

/**
 * @author Einar M R Rosenvinge
 */
class DummySpanNode extends SpanNode {
    final static DummySpanNode INSTANCE = new DummySpanNode();

    private DummySpanNode() {
    }

    @Override
    public boolean isLeafNode() {
        return true;
    }

    @Override
    public ListIterator childIterator() {
        return Collections.emptyList().listIterator();
    }

    @Override
    public ListIterator childIteratorRecursive() {
        return Collections.emptyList().listIterator();
    }

    @Override
    public int getFrom() {
        return 0;
    }

    @Override
    public int getTo() {
        return 0;
    }

    @Override
    public int getLength() {
        return 0;
    }

    @Override
    public CharSequence getText(CharSequence text) {
        return null;
    }
}