78 lines
2.3 KiB
JavaScript
78 lines
2.3 KiB
JavaScript
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// Copyright 2018 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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(() => {
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function Internalize(s) {
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return Object.keys({[s]:0})[0];
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}
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const string = Internalize('a'.repeat(100));
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let pattern;
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let result;
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const setupString = () => pattern = '.';
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const setupRegExp = () => pattern = /./g;
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const setupZeroWidth = () => pattern = /(?:)/g;
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const setupZeroWidthUnicode = () => pattern = /(?:)/gu;
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function benchIteratorCreation() {
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result = string.matchAll(pattern);
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}
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function benchBuiltin() {
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for (const match of string.matchAll(pattern)) {
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result = match[0];
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}
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}
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function benchManualString() {
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let regexp = new RegExp(pattern, 'g');
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let match;
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while ((match = regexp.exec(string)) !== null) {
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result = match[0];
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}
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}
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function benchManualRegExp() {
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let match;
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while ((match = pattern.exec(string)) !== null) {
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result = match[0];
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}
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}
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// Iterator Creation
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new BenchmarkSuite('StringMatchAllBuiltinRegExpIteratorCreation', [20], [
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new Benchmark('StringMatchAllBuiltinRegExpIteratorCreation', false, false, 0, benchIteratorCreation, setupRegExp)
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]);
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new BenchmarkSuite('StringMatchAllBuiltinStringIteratorCreation', [20], [
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new Benchmark('StringMatchAllBuiltinStringIteratorCreation', false, false, 0, benchIteratorCreation, setupString)
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]);
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// String
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new BenchmarkSuite('StringMatchAllBuiltinString', [20], [
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new Benchmark('StringMatchAllBuiltinString', false, false, 0, benchBuiltin, setupString)
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]);
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new BenchmarkSuite('StringMatchAllManualString', [20], [
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new Benchmark('StringMatchAllManualString', false, false, 0, benchManualString, setupString)
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]);
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// RegExp
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new BenchmarkSuite('StringMatchAllBuiltinRegExp', [20], [
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new Benchmark('StringMatchAllBuiltinRegExp', false, false, 0, benchBuiltin, setupRegExp)
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]);
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new BenchmarkSuite('StringMatchAllManualRegExp', [20], [
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new Benchmark('StringMatchAllManualRegExp', false, false, 0, benchManualRegExp, setupRegExp)
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]);
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// Zero width
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new BenchmarkSuite('StringMatchAllBuiltinZeroWidth', [20], [
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new Benchmark('StringMatchAllBuiltinZeroWidth', false, false, 0, benchBuiltin, setupZeroWidth)
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]);
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new BenchmarkSuite('StringMatchAllBuiltinZeroWidthUnicode', [20], [
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new Benchmark('StringMatchAllBuiltinZeroWidthUnicode', false, false, 0, benchBuiltin, setupZeroWidthUnicode)
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]);
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})();
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