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840 BJavaScriptView Raw
1var memoizeCapped = require('./_memoizeCapped');
2
3/** Used to match property names within property paths. */
4var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
5
6/** Used to match backslashes in property paths. */
7var reEscapeChar = /\\(\\)?/g;
8
9/**
10 * Converts `string` to a property path array.
11 *
12 * @private
13 * @param {string} string The string to convert.
14 * @returns {Array} Returns the property path array.
15 */
16var stringToPath = memoizeCapped(function(string) {
17 var result = [];
18 if (string.charCodeAt(0) === 46 /* . */) {
19 result.push('');
20 }
21 string.replace(rePropName, function(match, number, quote, subString) {
22 result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
23 });
24 return result;
25});
26
27module.exports = stringToPath;