183eb36b88
- Expose fast paths for RegExpPrototypeMatchBody/RegExpPrototypeSearchBody as TFS builtins - Add StringPrototypeMatch and StringPrototypeSearch TFJ builtins - Add StringMatchSearchAssembler to ensure same search/match behavior - Remove functionality from string.js A quick benchmark shows gains of 20-30% for unoptimized code and 0-20% for optimized code. https://github.com/peterwmwong/v8-perf/blob/master/string-search-match/README.md Bug: v8:5049 Change-Id: I0fffee6e94e62ecae049c9e5798da52d67ae1823 Reviewed-on: https://chromium-review.googlesource.com/707824 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#48452}
22 lines
828 B
JavaScript
22 lines
828 B
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
const pattern = {};
|
|
pattern[Symbol.match] = function(string) {
|
|
return string.length;
|
|
};
|
|
// Check object coercible fails.
|
|
assertThrows(() => String.prototype.match.call(null, pattern),
|
|
TypeError);
|
|
// Override is called.
|
|
assertEquals(5, "abcde".match(pattern));
|
|
// Receiver is not converted to string if pattern has Symbol.match
|
|
const receiver = { toString(){ throw new Error(); }, length: 6 };
|
|
assertEquals(6, String.prototype.match.call(receiver, pattern));
|
|
// Non-callable override.
|
|
pattern[Symbol.match] = "dumdidum";
|
|
assertThrows(() => "abcde".match(pattern), TypeError);
|
|
|
|
assertEquals("[Symbol.match]", RegExp.prototype[Symbol.match].name);
|