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var baseCompareAscending = require('./baseCompareAscending');
/**
* Used by `_.sortByOrder` to compare multiple properties of a value to another
* and stable sort them.
*
* If `orders` is unspecified, all valuess are sorted in ascending order. Otherwise,
* a value is sorted in ascending order if its corresponding order is "asc", and
* descending if "desc".
*
* @private
* @param {Object} object The object to compare.
* @param {Object} other The other object to compare.
* @param {boolean[]} 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 = baseCompareAscending(objCriteria[index], othCriteria[index]);
if (result) {
if (index >= ordersLength) {
return result;
}
var order = orders[index];
return result * ((order === 'asc' || order === true) ? 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://code.google.com/p/v8/issues/detail?id=90 for more details.
return object.index - other.index;
}
module.exports = compareMultiple;
Version data entries
153 entries across 80 versions & 8 rubygems