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var baseIsMatch = require('../internal/baseIsMatch'),
bindCallback = require('../internal/bindCallback'),
isStrictComparable = require('../internal/isStrictComparable'),
keys = require('../object/keys'),
toObject = require('../internal/toObject');
/**
* Performs a deep comparison between `object` and `source` to determine if
* `object` contains equivalent property values. If `customizer` is provided
* it is invoked to compare values. If `customizer` returns `undefined`
* comparisons are handled by the method instead. The `customizer` is bound
* to `thisArg` and invoked with three arguments: (value, other, index|key).
*
* **Note:** This method supports comparing properties of arrays, booleans,
* `Date` objects, numbers, `Object` objects, regexes, and strings. Functions
* and DOM nodes are **not** supported. Provide a customizer function to extend
* support for comparing other values.
*
* @static
* @memberOf _
* @category Lang
* @param {Object} object The object to inspect.
* @param {Object} source The object of property values to match.
* @param {Function} [customizer] The function to customize value comparisons.
* @param {*} [thisArg] The `this` binding of `customizer`.
* @returns {boolean} Returns `true` if `object` is a match, else `false`.
* @example
*
* var object = { 'user': 'fred', 'age': 40 };
*
* _.isMatch(object, { 'age': 40 });
* // => true
*
* _.isMatch(object, { 'age': 36 });
* // => false
*
* // using a customizer callback
* var object = { 'greeting': 'hello' };
* var source = { 'greeting': 'hi' };
*
* _.isMatch(object, source, function(value, other) {
* return _.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/) || undefined;
* });
* // => true
*/
function isMatch(object, source, customizer, thisArg) {
var props = keys(source),
length = props.length;
if (!length) {
return true;
}
if (object == null) {
return false;
}
customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3);
object = toObject(object);
if (!customizer && length == 1) {
var key = props[0],
value = source[key];
if (isStrictComparable(value)) {
return value === object[key] && (value !== undefined || (key in object));
}
}
var values = Array(length),
strictCompareFlags = Array(length);
while (length--) {
value = values[length] = source[props[length]];
strictCompareFlags[length] = isStrictComparable(value);
}
return baseIsMatch(object, props, values, strictCompareFlags, customizer);
}
module.exports = isMatch;
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