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
836 B
JavaScript
22 lines
836 B
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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const pattern = {};
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pattern[Symbol.search] = function(string) {
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return string.length;
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};
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// Check object coercible fails.
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assertThrows(() => String.prototype.search.call(null, pattern),
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TypeError);
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// Override is called.
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assertEquals(5, "abcde".search(pattern));
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// Receiver is not converted to string if pattern has Symbol.match
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const receiver = { toString(){ throw new Error(); }, length: 6 };
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assertEquals(6, String.prototype.search.call(receiver, pattern));
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// Non-callable override.
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pattern[Symbol.search] = "dumdidum";
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assertThrows(() => "abcde".search(pattern), TypeError);
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assertEquals("[Symbol.search]", RegExp.prototype[Symbol.search].name);
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