<!DOCTYPE html>
<!--
Copyright 2015 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<link rel="import" href="/core/scripting_object.html">

<script>
'use strict';

tv.exportTo('tv.e.tquery', function() {
  function Filter() {
    tv.c.ScriptingObject.call(this);
  }

  Filter.normalizeFilterExpression = function(filterExpression) {
    // Shortcut: naked strings and regexps can be used to match against slice
    // titles.
    if (filterExpression instanceof String ||
        typeof(filterExpression) == 'string' ||
        filterExpression instanceof RegExp) {
      var filter = new tv.e.tquery.FilterHasTitle(filterExpression);
      return filter;
    }
    return filterExpression;
  };

  Filter.prototype = {
    __proto__: tv.c.ScriptingObject.prototype,

    evaluate: function(context) {
      throw new Error('Not implemented');
    },

    matchValue_: function(value, expected) {
      if (expected instanceof RegExp)
        return expected.test(value);
      else if (expected instanceof Function)
        return expected(value);
      return value === expected;
    }
  };

  return {
    Filter: Filter
  };
});
</script>