1// Copyright 2014 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5new BenchmarkSuite('ForOf', [1000], [ 6 new Benchmark('ArrayValues', false, false, 0, 7 ForOf, ForOfArraySetup, ForOfTearDown), 8 new Benchmark('ArrayKeys', false, false, 0, 9 ForOf, ForOfArrayKeysSetup, ForOfTearDown), 10 new Benchmark('ArrayEntries', false, false, 0, 11 ForOf, ForOfArrayEntriesSetup, ForOfTearDown), 12 new Benchmark('Uint8Array', false, false, 0, 13 ForOf, ForOfUint8ArraySetup, ForOfTearDown), 14 new Benchmark('Float64Array', false, false, 0, 15 ForOf, ForOfFloat64ArraySetup, ForOfTearDown), 16 new Benchmark('String', false, false, 0, 17 ForOf, ForOfStringSetup, ForOfTearDown), 18]); 19 20 21var iterable; 22var N = 100; 23var expected, result; 24 25 26function ForOfArraySetupHelper(constructor) { 27 iterable = new constructor(N); 28 for (var i = 0; i < N; i++) iterable[i] = i; 29 expected = N - 1; 30} 31 32 33function ForOfArraySetup() { 34 ForOfArraySetupHelper(Array); 35 // Default iterator is values(). 36} 37 38 39function ForOfArrayKeysSetup() { 40 ForOfArraySetupHelper(Array); 41 iterable = iterable.keys(); 42} 43 44 45function ForOfArrayEntriesSetup() { 46 ForOfArraySetupHelper(Array); 47 iterable = iterable.entries(); 48 expected = [N-1, N-1]; 49} 50 51 52function ForOfUint8ArraySetup() { 53 ForOfArraySetupHelper(Uint8Array); 54} 55 56 57function ForOfFloat64ArraySetup() { 58 ForOfArraySetupHelper(Float64Array); 59} 60 61 62function ForOfStringSetup() { 63 iterable = "abcdefhijklmnopqrstuvwxyzABCDEFHIJKLMNOPQRSTUVWXYZ0123456789"; 64 expected = "9"; 65} 66 67 68function Equals(expected, actual) { 69 if (expected === actual) return true; 70 if (typeof expected !== typeof actual) return false; 71 if (typeof expected !== 'object') return false; 72 for (var k of Object.keys(expected)) { 73 if (!(k in actual)) return false; 74 if (!Equals(expected[k], actual[k])) return false; 75 } 76 for (var k of Object.keys(actual)) { 77 if (!(k in expected)) return false; 78 } 79 return true; 80} 81 82function ForOfTearDown() { 83 iterable = null; 84 if (!Equals(expected, result)) { 85 throw new Error("Bad result: " + result); 86 } 87} 88 89 90function ForOf() { 91 for (var x of iterable) { 92 result = x; 93 } 94} 95