/**
 * lodash 3.3.3 (Custom Build) <https://lodash.com/>
 * Build: `lodash modern modularize exports="npm" -o ./`
 * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <https://lodash.com/license>
 */
var baseCallback = require('lodash._basecallback'),
    baseClone = require('lodash._baseclone'),
    baseMatches = require('lodash._basematches'),
    isIterateeCall = require('lodash._isiterateecall');

/**
 * Checks if `value` is object-like.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 */
function isObjectLike(value) {
  return !!value && typeof value == 'object';
}

/**
 * Creates a function that invokes `func` with the `this` binding of `thisArg`
 * and arguments of the created function. If `func` is a property name the
 * created callback returns the property value for a given element. If `func`
 * is an object the created callback returns `true` for elements that contain
 * the equivalent object properties, otherwise it returns `false`.
 *
 * @static
 * @memberOf _
 * @alias iteratee
 * @category Utility
 * @param {*} [func=_.identity] The value to convert to a callback.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
 * @returns {Function} Returns the callback.
 * @example
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36 },
 *   { 'user': 'fred',   'age': 40 }
 * ];
 *
 * // wrap to create custom callback shorthands
 * _.callback = _.wrap(_.callback, function(callback, func, thisArg) {
 *   var match = /^(.+?)__([gl]t)(.+)$/.exec(func);
 *   if (!match) {
 *     return callback(func, thisArg);
 *   }
 *   return function(object) {
 *     return match[2] == 'gt'
 *       ? object[match[1]] > match[3]
 *       : object[match[1]] < match[3];
 *   };
 * });
 *
 * _.filter(users, 'age__gt36');
 * // => [{ 'user': 'fred', 'age': 40 }]
 */
function callback(func, thisArg, guard) {
  if (guard && isIterateeCall(func, thisArg, guard)) {
    thisArg = undefined;
  }
  return isObjectLike(func)
    ? matches(func)
    : baseCallback(func, thisArg);
}

/**
 * Creates a function that performs a deep comparison between a given object
 * and `source`, returning `true` if the given object has equivalent property
 * values, else `false`.
 *
 * **Note:** This method supports comparing arrays, booleans, `Date` objects,
 * numbers, `Object` objects, regexes, and strings. Objects are compared by
 * their own, not inherited, enumerable properties. For comparing a single
 * own or inherited property value see `_.matchesProperty`.
 *
 * @static
 * @memberOf _
 * @category Utility
 * @param {Object} source The object of property values to match.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36, 'active': true },
 *   { 'user': 'fred',   'age': 40, 'active': false }
 * ];
 *
 * _.filter(users, _.matches({ 'age': 40, 'active': false }));
 * // => [{ 'user': 'fred', 'age': 40, 'active': false }]
 */
function matches(source) {
  return baseMatches(baseClone(source, true));
}

module.exports = callback;