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CSS parser for HtmlUnit.

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/*
 * Copyright (c) 2019-2021 Ronald Brill.
 *
 * 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 com.gargoylesoftware.css.parser.selector;

import java.io.Serializable;

import com.gargoylesoftware.css.parser.AbstractLocatable;

/**
 * @author Ronald Brill
 */
public abstract class AbstractSelector extends AbstractLocatable implements Selector, Serializable {

    private SelectorSpecificity specificity_;

    @Override
    public SelectorSpecificity getSelectorSpecificity() {
        if (specificity_ == null) {
            specificity_ = new SelectorSpecificity(this);
        }
        return specificity_;
    }
}