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| 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 | |
| 5 // Flags: --harmony-arrays --allow-natives-syntax | |
| 6 | |
| 7 var typedArrayConstructors = [ | |
| 8 Uint8Array, | |
| 9 Int8Array, | |
| 10 Uint16Array, | |
| 11 Int16Array, | |
| 12 Uint32Array, | |
| 13 Int32Array, | |
| 14 Uint8ClampedArray, | |
| 15 Float32Array, | |
| 16 Float64Array]; | |
| 17 | |
| 18 function CheckTypedArrayIsNeutered(array) { | |
| 19 assertEquals(0, array.byteLength); | |
| 20 assertEquals(0, array.byteOffset); | |
| 21 assertEquals(0, array.length); | |
| 22 } | |
| 23 | |
| 24 function TestTypedArrayForEach(constructor) { | |
| 25 assertEquals(1, constructor.prototype.every.length); | |
| 26 | |
| 27 var a = new constructor(3); | |
| 28 a[0] = 0; | |
| 29 a[1] = 1; | |
| 30 a[2] = 2; | |
| 31 | |
| 32 var result = a.every(function (n) { return n < 2; }); | |
| 33 assertFalse(result); | |
| 34 | |
| 35 var result = a.every(function (n) { return n > 2; }); | |
| 36 assertFalse(result); | |
| 37 | |
| 38 var result = a.every(function (n) { return n >= 0; }); | |
| 39 assertEquals(true, result); | |
| 40 | |
| 41 // Use specified object as this object when calling the function. | |
| 42 var o = { value: 42 }; | |
| 43 result = a.every(function (n, index, array) { return n == index && n < this.va
lue; }, o); | |
| 44 assertEquals(true, result); | |
| 45 | |
| 46 // Early exit happens when appropriate | |
| 47 count = 0; | |
| 48 result = a.every(function () { count++; return false; }); | |
| 49 assertEquals(1, count); | |
| 50 assertFalse(result); | |
| 51 | |
| 52 // Modify the original array. | |
| 53 count = 0; | |
| 54 result = a.every(function (n, index, array) { | |
| 55 array[index] = n + 1; count++; return true; | |
| 56 }); | |
| 57 assertEquals(3, count); | |
| 58 assertEquals(true, result); | |
| 59 assertArrayEquals([1, 2, 3], a); | |
| 60 | |
| 61 // Check that values passed as second argument are wrapped into | |
| 62 // objects when calling into sloppy mode functions. | |
| 63 function CheckWrapping(value, wrapper) { | |
| 64 var wrappedValue = new wrapper(value); | |
| 65 | |
| 66 a.every(function () { | |
| 67 assertEquals("object", typeof this); | |
| 68 assertEquals(wrappedValue, this); | |
| 69 }, value); | |
| 70 | |
| 71 a.every(function () { | |
| 72 "use strict"; | |
| 73 assertEquals(typeof value, typeof this); | |
| 74 assertEquals(value, this); | |
| 75 }, value); | |
| 76 } | |
| 77 CheckWrapping(true, Boolean); | |
| 78 CheckWrapping(false, Boolean); | |
| 79 CheckWrapping("xxx", String); | |
| 80 CheckWrapping(42, Number); | |
| 81 CheckWrapping(3.14, Number); | |
| 82 CheckWrapping({}, Object); | |
| 83 | |
| 84 // Neutering the buffer backing the typed array mid-way should | |
| 85 // still make .forEach() finish, and the array should keep being | |
| 86 // empty after neutering it. | |
| 87 count = 0; | |
| 88 a = new constructor(3); | |
| 89 result = a.every(function (n, index, array) { | |
| 90 assertFalse(array[index] === undefined); // don't get here if neutered | |
| 91 if (count > 0) %ArrayBufferNeuter(array.buffer); | |
| 92 array[index] = n + 1; | |
| 93 count++; | |
| 94 return count > 1 ? array[index] === undefined : true; | |
| 95 }); | |
| 96 assertEquals(2, count); | |
| 97 assertEquals(true, result); | |
| 98 CheckTypedArrayIsNeutered(a); | |
| 99 assertEquals(undefined, a[0]); | |
| 100 | |
| 101 // The method must work for typed arrays created from ArrayBuffer. | |
| 102 // The length of the ArrayBuffer is chosen so it is a multiple of | |
| 103 // all lengths of the typed array items. | |
| 104 a = new constructor(new ArrayBuffer(64)); | |
| 105 count = 0; | |
| 106 result = a.every(function (n) { return n == 0; }); | |
| 107 assertEquals(result, true); | |
| 108 | |
| 109 // Externalizing the array mid-way accessing the .buffer property | |
| 110 // should work. | |
| 111 a = new constructor(2); | |
| 112 count = 0; | |
| 113 var buffer = undefined; | |
| 114 a.every(function (n, index, array) { | |
| 115 if (count++ > 0) | |
| 116 buffer = array.buffer; | |
| 117 return true; | |
| 118 }); | |
| 119 assertEquals(2, count); | |
| 120 assertTrue(!!buffer); | |
| 121 assertEquals("ArrayBuffer", %_ClassOf(buffer)); | |
| 122 assertSame(buffer, a.buffer); | |
| 123 | |
| 124 // The %TypedArray%.every() method should not work when | |
| 125 // transplanted to objects that are not typed arrays. | |
| 126 assertThrows(function () { constructor.prototype.every.call([1, 2, 3], functio
n (x) {}) }, TypeError); | |
| 127 assertThrows(function () { constructor.prototype.every.call("abc", function (x
) {}) }, TypeError); | |
| 128 assertThrows(function () { constructor.prototype.every.call({}, function (x) {
}) }, TypeError); | |
| 129 assertThrows(function () { constructor.prototype.every.call(0, function (x) {}
) }, TypeError); | |
| 130 | |
| 131 // Method must be useable on instances of other typed arrays. | |
| 132 for (var i = 0; i < typedArrayConstructors.length; i++) { | |
| 133 count = 0; | |
| 134 a = new typedArrayConstructors[i](4); | |
| 135 constructor.prototype.every.call(a, function (x) { count++; return true; }); | |
| 136 assertEquals(a.length, count); | |
| 137 } | |
| 138 | |
| 139 // Shadowing length doesn't affect every, unlike Array.prototype.every | |
| 140 a = new constructor([1, 2]); | |
| 141 Object.defineProperty(a, 'length', {value: 1}); | |
| 142 var x = 0; | |
| 143 assertEquals(a.every(function(elt) { x += elt; return true; }), true); | |
| 144 assertEquals(x, 3); | |
| 145 assertEquals(Array.prototype.every.call(a, | |
| 146 function(elt) { x += elt; return true; }), true); | |
| 147 assertEquals(x, 4); | |
| 148 } | |
| 149 | |
| 150 for (i = 0; i < typedArrayConstructors.length; i++) { | |
| 151 TestTypedArrayForEach(typedArrayConstructors[i]); | |
| 152 } | |
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