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					45 lines
				
				1.6 KiB
			
		
		
			
		
	
	
					45 lines
				
				1.6 KiB
			| 
											3 years ago
										 | var compareAscending = require('./_compareAscending'); | ||
|  | 
 | ||
|  | /** | ||
|  |  * Used by `_.orderBy` to compare multiple properties of a value to another | ||
|  |  * and stable sort them. | ||
|  |  * | ||
|  |  * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, | ||
|  |  * specify an order of "desc" for descending or "asc" for ascending sort order | ||
|  |  * of corresponding values. | ||
|  |  * | ||
|  |  * @private | ||
|  |  * @param {Object} object The object to compare. | ||
|  |  * @param {Object} other The other object to compare. | ||
|  |  * @param {boolean[]|string[]} orders The order to sort by for each property. | ||
|  |  * @returns {number} Returns the sort order indicator for `object`. | ||
|  |  */ | ||
|  | function compareMultiple(object, other, orders) { | ||
|  |   var index = -1, | ||
|  |       objCriteria = object.criteria, | ||
|  |       othCriteria = other.criteria, | ||
|  |       length = objCriteria.length, | ||
|  |       ordersLength = orders.length; | ||
|  | 
 | ||
|  |   while (++index < length) { | ||
|  |     var result = compareAscending(objCriteria[index], othCriteria[index]); | ||
|  |     if (result) { | ||
|  |       if (index >= ordersLength) { | ||
|  |         return result; | ||
|  |       } | ||
|  |       var order = orders[index]; | ||
|  |       return result * (order == 'desc' ? -1 : 1); | ||
|  |     } | ||
|  |   } | ||
|  |   // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
 | ||
|  |   // that causes it, under certain circumstances, to provide the same value for
 | ||
|  |   // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
 | ||
|  |   // for more details.
 | ||
|  |   //
 | ||
|  |   // This also ensures a stable sort in V8 and other engines.
 | ||
|  |   // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
 | ||
|  |   return object.index - other.index; | ||
|  | } | ||
|  | 
 | ||
|  | module.exports = compareMultiple; |