wishthis/node_modules/autoprefixer/lib/brackets.js
2022-01-21 09:28:41 +01:00

64 lines
No EOL
2.3 KiB
JavaScript

"use strict";
function _createForOfIteratorHelperLoose(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; return function () { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } it = o[Symbol.iterator](); return it.next.bind(it); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function last(array) {
return array[array.length - 1];
}
var brackets = {
/**
* Parse string to nodes tree
*/
parse: function parse(str) {
var current = [''];
var stack = [current];
for (var _iterator = _createForOfIteratorHelperLoose(str), _step; !(_step = _iterator()).done;) {
var sym = _step.value;
if (sym === '(') {
current = [''];
last(stack).push(current);
stack.push(current);
continue;
}
if (sym === ')') {
stack.pop();
current = last(stack);
current.push('');
continue;
}
current[current.length - 1] += sym;
}
return stack[0];
},
/**
* Generate output string by nodes tree
*/
stringify: function stringify(ast) {
var result = '';
for (var _iterator2 = _createForOfIteratorHelperLoose(ast), _step2; !(_step2 = _iterator2()).done;) {
var i = _step2.value;
if (typeof i === 'object') {
result += "(" + brackets.stringify(i) + ")";
continue;
}
result += i;
}
return result;
}
};
module.exports = brackets;