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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 42 FUNCTION(4, Int16Array, 2) | 42 FUNCTION(4, Int16Array, 2) |
| 43 FUNCTION(5, Uint32Array, 4) | 43 FUNCTION(5, Uint32Array, 4) |
| 44 FUNCTION(6, Int32Array, 4) | 44 FUNCTION(6, Int32Array, 4) |
| 45 FUNCTION(7, Float32Array, 4) | 45 FUNCTION(7, Float32Array, 4) |
| 46 FUNCTION(8, Float64Array, 8) | 46 FUNCTION(8, Float64Array, 8) |
| 47 FUNCTION(9, Uint8ClampedArray, 1) | 47 FUNCTION(9, Uint8ClampedArray, 1) |
| 48 endmacro | 48 endmacro |
| 49 | 49 |
| 50 macro TYPED_ARRAY_CONSTRUCTOR(ARRAY_ID, NAME, ELEMENT_SIZE) | 50 macro TYPED_ARRAY_CONSTRUCTOR(ARRAY_ID, NAME, ELEMENT_SIZE) |
| 51 function NAMEConstructByArrayBuffer(obj, buffer, byteOffset, length) { | 51 function NAMEConstructByArrayBuffer(obj, buffer, byteOffset, length) { |
| 52 var bufferByteLength = buffer.byteLength; | 52 var bufferByteLength = %ArrayBufferGetByteLength(buffer); |
| 53 var offset; | 53 var offset; |
| 54 if (IS_UNDEFINED(byteOffset)) { | 54 if (IS_UNDEFINED(byteOffset)) { |
| 55 offset = 0; | 55 offset = 0; |
| 56 } else { | 56 } else { |
| 57 offset = ToPositiveInteger(byteOffset, "invalid_typed_array_length"); | 57 offset = ToPositiveInteger(byteOffset, "invalid_typed_array_length"); |
| 58 | 58 |
| 59 if (offset % ELEMENT_SIZE !== 0) { | 59 if (offset % ELEMENT_SIZE !== 0) { |
| 60 throw MakeRangeError("invalid_typed_array_alignment", | 60 throw MakeRangeError("invalid_typed_array_alignment", |
| 61 "start offset", "NAME", ELEMENT_SIZE); | 61 "start offset", "NAME", ELEMENT_SIZE); |
| 62 } | 62 } |
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| 306 | 306 |
| 307 // --------------------------- DataView ----------------------------- | 307 // --------------------------- DataView ----------------------------- |
| 308 | 308 |
| 309 var $DataView = global.DataView; | 309 var $DataView = global.DataView; |
| 310 | 310 |
| 311 function DataViewConstructor(buffer, byteOffset, byteLength) { // length = 3 | 311 function DataViewConstructor(buffer, byteOffset, byteLength) { // length = 3 |
| 312 if (%_IsConstructCall()) { | 312 if (%_IsConstructCall()) { |
| 313 if (!IS_ARRAYBUFFER(buffer)) { | 313 if (!IS_ARRAYBUFFER(buffer)) { |
| 314 throw MakeTypeError('data_view_not_array_buffer', []); | 314 throw MakeTypeError('data_view_not_array_buffer', []); |
| 315 } | 315 } |
| 316 var bufferByteLength = buffer.byteLength; | 316 var bufferByteLength = %ArrayBufferGetByteLength(buffer); |
| 317 var offset = IS_UNDEFINED(byteOffset) ? | 317 var offset = IS_UNDEFINED(byteOffset) ? |
| 318 0 : ToPositiveInteger(byteOffset, 'invalid_data_view_offset'); | 318 0 : ToPositiveInteger(byteOffset, 'invalid_data_view_offset'); |
| 319 if (offset > bufferByteLength) { | 319 if (offset > bufferByteLength) { |
| 320 throw MakeRangeError('invalid_data_view_offset'); | 320 throw MakeRangeError('invalid_data_view_offset'); |
| 321 } | 321 } |
| 322 var length = IS_UNDEFINED(byteLength) ? | 322 var length = IS_UNDEFINED(byteLength) ? |
| 323 bufferByteLength - offset : TO_INTEGER(byteLength); | 323 bufferByteLength - offset : TO_INTEGER(byteLength); |
| 324 if (length < 0 || offset + length > bufferByteLength) { | 324 if (length < 0 || offset + length > bufferByteLength) { |
| 325 throw new MakeRangeError('invalid_data_view_length'); | 325 throw new MakeRangeError('invalid_data_view_length'); |
| 326 } | 326 } |
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| 436 | 436 |
| 437 "getFloat32", DataViewGetFloat32, | 437 "getFloat32", DataViewGetFloat32, |
| 438 "setFloat32", DataViewSetFloat32, | 438 "setFloat32", DataViewSetFloat32, |
| 439 | 439 |
| 440 "getFloat64", DataViewGetFloat64, | 440 "getFloat64", DataViewGetFloat64, |
| 441 "setFloat64", DataViewSetFloat64 | 441 "setFloat64", DataViewSetFloat64 |
| 442 )); | 442 )); |
| 443 } | 443 } |
| 444 | 444 |
| 445 SetupDataView(); | 445 SetupDataView(); |
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