32 lines
918 B
JavaScript
32 lines
918 B
JavaScript
|
var memoizeCapped = require('./_memoizeCapped'),
|
||
|
|
toString = require('./toString');
|
||
|
|
|
||
|
|
/** Used to match property names within property paths. */
|
||
|
|
var reLeadingDot = /^\./,
|
||
|
|
rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
|
||
|
|
|
||
|
|
/** Used to match backslashes in property paths. */
|
||
|
|
var reEscapeChar = /\\(\\)?/g;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts `string` to a property path array.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {string} string The string to convert.
|
||
|
|
* @returns {Array} Returns the property path array.
|
||
|
|
*/
|
||
|
|
var stringToPath = memoizeCapped(function(string) {
|
||
|
|
string = toString(string);
|
||
|
|
|
||
|
|
var result = [];
|
||
|
|
if (reLeadingDot.test(string)) {
|
||
|
|
result.push('');
|
||
|
|
}
|
||
|
|
string.replace(rePropName, function(match, number, quote, string) {
|
||
|
|
result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
|
||
|
|
});
|
||
|
|
return result;
|
||
|
|
});
|
||
|
|
|
||
|
|
module.exports = stringToPath;
|