51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
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// Copyright 2017 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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function benchy(f, name) {
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new BenchmarkSuite(name, [1], [
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new Benchmark(name, true, false, 0, f),
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]);
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}
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const input = 'äϠ<C3A4>𝌆 Lorem ipsum test test';
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function helper(fn) {
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var sum = 0;
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for (var i = 0; i < input.length; i++) {
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sum += fn(input, i, i);
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}
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return sum;
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}
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function charCodeAt(str, i) {
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return str.charCodeAt(i) === 116;
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}
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function charCodeAtBoth(str, i, j) {
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return str.charCodeAt(j) == str.charCodeAt(i);
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}
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function charAt(str, i) {
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return 't' == str.charAt(i);
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}
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function charAtNever(str, i) {
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return '𝌆' == str.charAt(i);
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}
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function charAtBoth(str, i, j) {
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return str.charAt(j) == str.charAt(i);
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}
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function stringIndex(str, i) {
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return str[i] === 't';
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}
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benchy(() => helper(charCodeAt), "charCodeAt_const");
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benchy(() => helper(charCodeAtBoth), "charCodeAt_both");
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benchy(() => helper(charAt), "charAt_const");
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benchy(() => helper(charAtNever), "charAt_never");
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benchy(() => helper(charAtBoth), "charAt_both");
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benchy(() => helper(stringIndex), "stringIndex_const");
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