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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 (function(global, utils) { | 5 (function(global, utils) { |
| 6 | 6 |
| 7 "use strict"; | 7 "use strict"; |
| 8 | 8 |
| 9 %CheckIsBootstrapping(); | 9 %CheckIsBootstrapping(); |
| 10 | 10 |
| 11 // ------------------------------------------------------------------- | 11 // ------------------------------------------------------------------- |
| 12 // Imports | 12 // Imports |
| 13 | 13 |
| 14 var GlobalArrayBuffer = global.ArrayBuffer; | 14 var GlobalArrayBuffer = global.ArrayBuffer; |
| 15 var GlobalObject = global.Object; | 15 var GlobalObject = global.Object; |
| 16 var MathMax; |
| 17 var MathMin; |
| 16 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol"); | 18 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol"); |
| 17 | 19 |
| 20 utils.Import(function(from) { |
| 21 MathMax = from.MathMax; |
| 22 MathMin = from.MathMin; |
| 23 }); |
| 24 |
| 18 // ------------------------------------------------------------------- | 25 // ------------------------------------------------------------------- |
| 19 | 26 |
| 20 function ArrayBufferConstructor(length) { // length = 1 | 27 function ArrayBufferConstructor(length) { // length = 1 |
| 21 if (%_IsConstructCall()) { | 28 if (%_IsConstructCall()) { |
| 22 var byteLength = $toPositiveInteger(length, kInvalidArrayBufferLength); | 29 var byteLength = $toPositiveInteger(length, kInvalidArrayBufferLength); |
| 23 %ArrayBufferInitialize(this, byteLength, kNotShared); | 30 %ArrayBufferInitialize(this, byteLength, kNotShared); |
| 24 } else { | 31 } else { |
| 25 throw MakeTypeError(kConstructorNotFunction, "ArrayBuffer"); | 32 throw MakeTypeError(kConstructorNotFunction, "ArrayBuffer"); |
| 26 } | 33 } |
| 27 } | 34 } |
| (...skipping 13 matching lines...) Expand all Loading... |
| 41 'ArrayBuffer.prototype.slice', this); | 48 'ArrayBuffer.prototype.slice', this); |
| 42 } | 49 } |
| 43 | 50 |
| 44 var relativeStart = TO_INTEGER(start); | 51 var relativeStart = TO_INTEGER(start); |
| 45 if (!IS_UNDEFINED(end)) { | 52 if (!IS_UNDEFINED(end)) { |
| 46 end = TO_INTEGER(end); | 53 end = TO_INTEGER(end); |
| 47 } | 54 } |
| 48 var first; | 55 var first; |
| 49 var byte_length = %_ArrayBufferGetByteLength(this); | 56 var byte_length = %_ArrayBufferGetByteLength(this); |
| 50 if (relativeStart < 0) { | 57 if (relativeStart < 0) { |
| 51 first = MAX_SIMPLE(byte_length + relativeStart, 0); | 58 first = MathMax(byte_length + relativeStart, 0); |
| 52 } else { | 59 } else { |
| 53 first = MIN_SIMPLE(relativeStart, byte_length); | 60 first = MathMin(relativeStart, byte_length); |
| 54 } | 61 } |
| 55 var relativeEnd = IS_UNDEFINED(end) ? byte_length : end; | 62 var relativeEnd = IS_UNDEFINED(end) ? byte_length : end; |
| 56 var fin; | 63 var fin; |
| 57 if (relativeEnd < 0) { | 64 if (relativeEnd < 0) { |
| 58 fin = MAX_SIMPLE(byte_length + relativeEnd, 0); | 65 fin = MathMax(byte_length + relativeEnd, 0); |
| 59 } else { | 66 } else { |
| 60 fin = MIN_SIMPLE(relativeEnd, byte_length); | 67 fin = MathMin(relativeEnd, byte_length); |
| 61 } | 68 } |
| 62 | 69 |
| 63 if (fin < first) { | 70 if (fin < first) { |
| 64 fin = first; | 71 fin = first; |
| 65 } | 72 } |
| 66 var newLen = fin - first; | 73 var newLen = fin - first; |
| 67 // TODO(dslomov): implement inheritance | 74 // TODO(dslomov): implement inheritance |
| 68 var result = new GlobalArrayBuffer(newLen); | 75 var result = new GlobalArrayBuffer(newLen); |
| 69 | 76 |
| 70 %ArrayBufferSliceImpl(this, result, first); | 77 %ArrayBufferSliceImpl(this, result, first); |
| (...skipping 21 matching lines...) Expand all Loading... |
| 92 | 99 |
| 93 utils.InstallFunctions(GlobalArrayBuffer, DONT_ENUM, [ | 100 utils.InstallFunctions(GlobalArrayBuffer, DONT_ENUM, [ |
| 94 "isView", ArrayBufferIsViewJS | 101 "isView", ArrayBufferIsViewJS |
| 95 ]); | 102 ]); |
| 96 | 103 |
| 97 utils.InstallFunctions(GlobalArrayBuffer.prototype, DONT_ENUM, [ | 104 utils.InstallFunctions(GlobalArrayBuffer.prototype, DONT_ENUM, [ |
| 98 "slice", ArrayBufferSlice | 105 "slice", ArrayBufferSlice |
| 99 ]); | 106 ]); |
| 100 | 107 |
| 101 }) | 108 }) |
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