function _wrap_reg_exp(re, groups) {
_wrap_reg_exp = function(re, groups) {
return new WrappedRegExp(re, undefined, groups);
};
var _super = RegExp.prototype;
var _groups = new WeakMap();
function WrappedRegExp(re, flags, groups) {
var _re = new RegExp(re, flags);
_groups.set(_re, groups || _groups.get(re));
return _set_prototype_of(_re, WrappedRegExp.prototype);
}
_inherits(WrappedRegExp, RegExp);
WrappedRegExp.prototype.exec = function(str) {
var result = _super.exec.call(this, str);
if (result) {
result.groups = buildGroups(result, this);
var indices = result.indices;
if (indices) indices.groups = buildGroups(indices, this);
}
return result;
};
WrappedRegExp.prototype[Symbol.replace] = function(str, substitution) {
if (typeof substitution === "string") {
var groups = _groups.get(this);
return _super[Symbol.replace].call(
this,
str,
substitution.replace(/\$<([^>]+)>/g, function(_, name) {
var group = groups ? groups[name] : undefined;
if (group === undefined) return "";
return "$" + (Array.isArray(group) ? group.join("$") : group);
})
);
}
if (typeof substitution === "function") {
var _this = this;
return _super[Symbol.replace].call(this, str, function() {
var args = arguments;
if (typeof args[args.length - 1] !== "object") {
args = [].slice.call(args);
args.push(buildGroups(args, _this));
}
return substitution.apply(this, args);
});
}
return _super[Symbol.replace].call(this, str, substitution);
};
function buildGroups(result, re) {
var g = _groups.get(re);
return Object.keys(g).reduce(function(groups, name) {
var i = g[name];
if (typeof i === "number") groups[name] = result[i];
else {
var k = 0;
while (result[i[k]] === undefined && k + 1 < i.length) k++;
groups[name] = result[i[k]];
}
return groups;
}, Object.create(null));
}
return _wrap_reg_exp.apply(this, arguments);
}