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76 lines
1.9 KiB
76 lines
1.9 KiB
var _typeof = require("../helpers/typeof");
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var wrapNativeSuper = require("./wrapNativeSuper");
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var getPrototypeOf = require("./getPrototypeOf");
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var possibleConstructorReturn = require("./possibleConstructorReturn");
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var inherits = require("./inherits");
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function _wrapRegExp(re, groups) {
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module.exports = _wrapRegExp = function _wrapRegExp(re, groups) {
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return new BabelRegExp(re, undefined, groups);
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};
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var _RegExp = wrapNativeSuper(RegExp);
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var _super = RegExp.prototype;
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var _groups = new WeakMap();
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function BabelRegExp(re, flags, groups) {
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var _this = _RegExp.call(this, re, flags);
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_groups.set(_this, groups || _groups.get(re));
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return _this;
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}
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inherits(BabelRegExp, _RegExp);
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BabelRegExp.prototype.exec = function (str) {
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var result = _super.exec.call(this, str);
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if (result) result.groups = buildGroups(result, this);
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return result;
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};
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BabelRegExp.prototype[Symbol.replace] = function (str, substitution) {
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if (typeof substitution === "string") {
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var groups = _groups.get(this);
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return _super[Symbol.replace].call(this, str, substitution.replace(/\$<([^>]+)>/g, function (_, name) {
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return "$" + groups[name];
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}));
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} else if (typeof substitution === "function") {
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var _this = this;
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return _super[Symbol.replace].call(this, str, function () {
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var args = [];
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args.push.apply(args, arguments);
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if (_typeof(args[args.length - 1]) !== "object") {
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args.push(buildGroups(args, _this));
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}
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return substitution.apply(this, args);
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});
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} else {
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return _super[Symbol.replace].call(this, str, substitution);
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}
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};
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function buildGroups(result, re) {
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var g = _groups.get(re);
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return Object.keys(g).reduce(function (groups, name) {
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groups[name] = result[g[name]];
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return groups;
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}, Object.create(null));
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}
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return _wrapRegExp.apply(this, arguments);
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}
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module.exports = _wrapRegExp;
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