wrapRegExp.js 2.1 KB

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  1. var _typeof = require("./typeof.js")["default"];
  2. var setPrototypeOf = require("./setPrototypeOf.js");
  3. var inherits = require("./inherits.js");
  4. function _wrapRegExp() {
  5. module.exports = _wrapRegExp = function _wrapRegExp(re, groups) {
  6. return new BabelRegExp(re, void 0, groups);
  7. }, module.exports.__esModule = true, module.exports["default"] = module.exports;
  8. var _super = RegExp.prototype,
  9. _groups = new WeakMap();
  10. function BabelRegExp(re, flags, groups) {
  11. var _this = new RegExp(re, flags);
  12. return _groups.set(_this, groups || _groups.get(re)), setPrototypeOf(_this, BabelRegExp.prototype);
  13. }
  14. function buildGroups(result, re) {
  15. var g = _groups.get(re);
  16. return Object.keys(g).reduce(function (groups, name) {
  17. var i = g[name];
  18. if ("number" == typeof i) groups[name] = result[i];else {
  19. for (var k = 0; void 0 === result[i[k]] && k + 1 < i.length;) {
  20. k++;
  21. }
  22. groups[name] = result[i[k]];
  23. }
  24. return groups;
  25. }, Object.create(null));
  26. }
  27. return inherits(BabelRegExp, RegExp), BabelRegExp.prototype.exec = function (str) {
  28. var result = _super.exec.call(this, str);
  29. return result && (result.groups = buildGroups(result, this)), result;
  30. }, BabelRegExp.prototype[Symbol.replace] = function (str, substitution) {
  31. if ("string" == typeof substitution) {
  32. var groups = _groups.get(this);
  33. return _super[Symbol.replace].call(this, str, substitution.replace(/\$<([^>]+)>/g, function (_, name) {
  34. return "$" + groups[name];
  35. }));
  36. }
  37. if ("function" == typeof substitution) {
  38. var _this = this;
  39. return _super[Symbol.replace].call(this, str, function () {
  40. var args = arguments;
  41. return "object" != _typeof(args[args.length - 1]) && (args = [].slice.call(args)).push(buildGroups(args, _this)), substitution.apply(this, args);
  42. });
  43. }
  44. return _super[Symbol.replace].call(this, str, substitution);
  45. }, _wrapRegExp.apply(this, arguments);
  46. }
  47. module.exports = _wrapRegExp, module.exports.__esModule = true, module.exports["default"] = module.exports;