[d565449] | 1 | import compareAscending from './_compareAscending.js';
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| 2 |
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| 3 | /**
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| 4 | * Used by `_.orderBy` to compare multiple properties of a value to another
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| 5 | * and stable sort them.
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| 6 | *
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| 7 | * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
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| 8 | * specify an order of "desc" for descending or "asc" for ascending sort order
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| 9 | * of corresponding values.
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| 10 | *
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| 11 | * @private
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| 12 | * @param {Object} object The object to compare.
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| 13 | * @param {Object} other The other object to compare.
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| 14 | * @param {boolean[]|string[]} orders The order to sort by for each property.
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| 15 | * @returns {number} Returns the sort order indicator for `object`.
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| 16 | */
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| 17 | function compareMultiple(object, other, orders) {
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| 18 | var index = -1,
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| 19 | objCriteria = object.criteria,
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| 20 | othCriteria = other.criteria,
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| 21 | length = objCriteria.length,
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| 22 | ordersLength = orders.length;
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| 23 |
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| 24 | while (++index < length) {
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| 25 | var result = compareAscending(objCriteria[index], othCriteria[index]);
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| 26 | if (result) {
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| 27 | if (index >= ordersLength) {
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| 28 | return result;
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| 29 | }
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| 30 | var order = orders[index];
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| 31 | return result * (order == 'desc' ? -1 : 1);
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| 32 | }
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| 33 | }
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| 34 | // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
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| 35 | // that causes it, under certain circumstances, to provide the same value for
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| 36 | // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
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| 37 | // for more details.
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| 38 | //
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| 39 | // This also ensures a stable sort in V8 and other engines.
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| 40 | // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
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| 41 | return object.index - other.index;
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| 42 | }
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| 43 |
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| 44 | export default compareMultiple;
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