| var baseSortedIndexBy = require('./_baseSortedIndexBy'), |
| identity = require('./identity'), |
| isSymbol = require('./isSymbol'); |
| |
| /** Used as references for the maximum length and index of an array. */ |
| var MAX_ARRAY_LENGTH = 4294967295, |
| HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; |
| |
| /** |
| * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which |
| * performs a binary search of `array` to determine the index at which `value` |
| * should be inserted into `array` in order to maintain its sort order. |
| * |
| * @private |
| * @param {Array} array The sorted array to inspect. |
| * @param {*} value The value to evaluate. |
| * @param {boolean} [retHighest] Specify returning the highest qualified index. |
| * @returns {number} Returns the index at which `value` should be inserted |
| * into `array`. |
| */ |
| function baseSortedIndex(array, value, retHighest) { |
| var low = 0, |
| high = array == null ? low : array.length; |
| |
| if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { |
| while (low < high) { |
| var mid = (low + high) >>> 1, |
| computed = array[mid]; |
| |
| if (computed !== null && !isSymbol(computed) && |
| (retHighest ? (computed <= value) : (computed < value))) { |
| low = mid + 1; |
| } else { |
| high = mid; |
| } |
| } |
| return high; |
| } |
| return baseSortedIndexBy(array, value, identity, retHighest); |
| } |
| |
| module.exports = baseSortedIndex; |