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// Copyright 2007 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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//      http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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 * @fileoverview DOM pattern base class.
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 *
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 * @author [email protected] (Robby Walker)
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 */
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goog.provide('goog.dom.pattern.AbstractPattern');
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goog.require('goog.dom.pattern.MatchType');
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/**
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 * Base pattern class for DOM matching.
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 *
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 * @constructor
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 */
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goog.dom.pattern.AbstractPattern = function() {
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  /**
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   * The first node matched by this pattern.
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   * @type {Node}
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   */
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  this.matchedNode = null;
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};
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/**
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 * Reset any internal state this pattern keeps.
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 */
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goog.dom.pattern.AbstractPattern.prototype.reset = function() {
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  // The base implementation does nothing.
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};
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/**
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 * Test whether this pattern matches the given token.
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 *
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 * @param {Node} token Token to match against.
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 * @param {goog.dom.TagWalkType} type The type of token.
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 * @return {goog.dom.pattern.MatchType} {@code MATCH} if the pattern matches.
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 */
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goog.dom.pattern.AbstractPattern.prototype.matchToken = function(token, type) {
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  return goog.dom.pattern.MatchType.NO_MATCH;
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};
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