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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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