81e7e2f437
This CL implements the upcoming spec change: https://github.com/tc39/proposal-regexp-match-indices/pull/49 A new JSRegExpResultWithIndices subclass is introduced with a separate map and an extra slot for storing the indices. If /d is passed, exec() constructs a JSRegExpResultWithIndices and eagerly builds indices. The existing re-execution logic is removed. Bug: v8:9548 Change-Id: Ic11853e7521017af5e8bd583c7b82bb672821132 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616873 Commit-Queue: Shu-yu Guo <syg@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Toon Verwaest <verwaest@chromium.org> Cr-Commit-Position: refs/heads/master@{#72306}
43 lines
1.6 KiB
JavaScript
43 lines
1.6 KiB
JavaScript
// Copyright 2020 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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// Flags: --allow-natives-syntax
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// Flags: --enable-experimental-regexp-engine
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// Flags: --no-default-to-experimental-regexp-engine
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// Flags: --no-force-slow-path
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// We shouldn't assign the experimental engine to regexps without 'l' flag.
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assertNotEquals("EXPERIMENTAL", %RegexpTypeTag(/asdf/));
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assertNotEquals("EXPERIMENTAL", %RegexpTypeTag(/123|asdf/));
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assertNotEquals("EXPERIMENTAL", %RegexpTypeTag(/(a*)*x/));
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assertNotEquals("EXPERIMENTAL", %RegexpTypeTag(/(a*)\1/));
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// We should assign the experimental engine to regexps with 'l' flag.
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assertEquals("EXPERIMENTAL", %RegexpTypeTag(/asdf/l));
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assertEquals("EXPERIMENTAL", %RegexpTypeTag(/123|asdf/l));
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assertEquals("EXPERIMENTAL", %RegexpTypeTag(/(a*)*x/l));
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// We should throw if a regexp with 'l' flag can't be handled by the
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// experimental engine.
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assertThrows(() => /(a*)\1/l, SyntaxError);
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// The flags field of a regexp should be sorted.
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assertEquals("glmsy", (/asdf/lymsg).flags);
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// The 'linear' member should be set according to the linear flag.
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assertTrue((/asdf/lymsg).linear);
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assertFalse((/asdf/ymsg).linear);
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// The new fields installed on the regexp prototype map shouldn't make
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// unmodified regexps slow.
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assertTrue(%RegexpIsUnmodified(/asdf/));
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assertTrue(%RegexpIsUnmodified(/asdf/l));
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// Redefined .linear should reflect in flags.
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{
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let re = /./;
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Object.defineProperty(re, "linear", { get: function() { return true; } });
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assertEquals("l", re.flags);
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}
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