Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | (function(global, utils) { |
| 6 | |
| 7 | "use strict"; |
| 8 | |
| 9 | %CheckIsBootstrapping(); |
| 10 | |
| 11 | // ------------------------------------------------------------------- |
| 12 | // Imports |
| 13 | |
| 14 | var ArrayFrom; |
| 15 | var ArrayToString; |
| 16 | var ArrayValues; |
| 17 | var GlobalArray = global.Array; |
| 18 | var GlobalArrayBuffer = global.ArrayBuffer; |
| 19 | var GlobalDataView = global.DataView; |
| 20 | var GlobalObject = global.Object; |
| 21 | var InternalArray = utils.InternalArray; |
| 22 | var InnerArrayCopyWithin; |
| 23 | var InnerArrayEvery; |
| 24 | var InnerArrayFill; |
| 25 | var InnerArrayFilter; |
| 26 | var InnerArrayFind; |
| 27 | var InnerArrayFindIndex; |
| 28 | var InnerArrayForEach; |
| 29 | var InnerArrayIncludes; |
| 30 | var InnerArrayIndexOf; |
| 31 | var InnerArrayJoin; |
| 32 | var InnerArrayLastIndexOf; |
| 33 | var InnerArrayReduce; |
| 34 | var InnerArrayReduceRight; |
| 35 | var InnerArraySome; |
| 36 | var InnerArraySort; |
| 37 | var InnerArrayToLocaleString; |
| 38 | var InternalArray = utils.InternalArray; |
| 39 | var IsNaN; |
| 40 | var MakeRangeError; |
| 41 | var MakeTypeError; |
| 42 | var MaxSimple; |
| 43 | var MinSimple; |
| 44 | var PackedArrayReverse; |
| 45 | var SpeciesConstructor; |
| 46 | var ToPositiveInteger; |
| 47 | var iteratorSymbol = utils.ImportNow("iterator_symbol"); |
| 48 | var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol"); |
| 49 | |
| 50 | macro TYPED_ARRAYS(FUNCTION) |
| 51 | // arrayIds below should be synchronized with Runtime_TypedArrayInitialize. |
| 52 | FUNCTION(1, Uint8Array, 1) |
| 53 | FUNCTION(2, Int8Array, 1) |
| 54 | FUNCTION(3, Uint16Array, 2) |
| 55 | FUNCTION(4, Int16Array, 2) |
| 56 | FUNCTION(5, Uint32Array, 4) |
| 57 | FUNCTION(6, Int32Array, 4) |
| 58 | FUNCTION(7, Float32Array, 4) |
| 59 | FUNCTION(8, Float64Array, 8) |
| 60 | FUNCTION(9, Uint8ClampedArray, 1) |
| 61 | endmacro |
| 62 | |
| 63 | macro DECLARE_GLOBALS(INDEX, NAME, SIZE) |
| 64 | var GlobalNAME = global.NAME; |
| 65 | endmacro |
| 66 | |
| 67 | TYPED_ARRAYS(DECLARE_GLOBALS) |
| 68 | |
| 69 | utils.Import(function(from) { |
| 70 | ArrayFrom = from.ArrayFrom; |
| 71 | ArrayToString = from.ArrayToString; |
| 72 | ArrayValues = from.ArrayValues; |
| 73 | InnerArrayCopyWithin = from.InnerArrayCopyWithin; |
| 74 | InnerArrayEvery = from.InnerArrayEvery; |
| 75 | InnerArrayFill = from.InnerArrayFill; |
| 76 | InnerArrayFilter = from.InnerArrayFilter; |
| 77 | InnerArrayFind = from.InnerArrayFind; |
| 78 | InnerArrayFindIndex = from.InnerArrayFindIndex; |
| 79 | InnerArrayForEach = from.InnerArrayForEach; |
| 80 | InnerArrayIncludes = from.InnerArrayIncludes; |
| 81 | InnerArrayIndexOf = from.InnerArrayIndexOf; |
| 82 | InnerArrayJoin = from.InnerArrayJoin; |
| 83 | InnerArrayLastIndexOf = from.InnerArrayLastIndexOf; |
| 84 | InnerArrayReduce = from.InnerArrayReduce; |
| 85 | InnerArrayReduceRight = from.InnerArrayReduceRight; |
| 86 | InnerArraySome = from.InnerArraySome; |
| 87 | InnerArraySort = from.InnerArraySort; |
| 88 | InnerArrayToLocaleString = from.InnerArrayToLocaleString; |
| 89 | IsNaN = from.IsNaN; |
| 90 | MakeRangeError = from.MakeRangeError; |
| 91 | MakeTypeError = from.MakeTypeError; |
| 92 | MaxSimple = from.MaxSimple; |
| 93 | MinSimple = from.MinSimple; |
| 94 | PackedArrayReverse = from.PackedArrayReverse; |
| 95 | SpeciesConstructor = from.SpeciesConstructor; |
| 96 | ToPositiveInteger = from.ToPositiveInteger; |
| 97 | }); |
| 98 | |
| 99 | // --------------- Typed Arrays --------------------- |
| 100 | |
| 101 | function TypedArrayDefaultConstructor(typedArray) { |
| 102 | switch (%_ClassOf(typedArray)) { |
| 103 | macro TYPED_ARRAY_CONSTRUCTOR_CASE(ARRAY_ID, NAME, ELEMENT_SIZE) |
| 104 | case "NAME": |
| 105 | return GlobalNAME; |
| 106 | endmacro |
| 107 | TYPED_ARRAYS(TYPED_ARRAY_CONSTRUCTOR_CASE) |
| 108 | } |
| 109 | // The TypeError should not be generated since all callers should |
| 110 | // have already called ValidateTypedArray. |
| 111 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 112 | "TypedArrayDefaultConstructor", this); |
| 113 | } |
| 114 | |
| 115 | function TypedArrayCreate(constructor, arg0, arg1, arg2) { |
| 116 | if (IS_UNDEFINED(arg1)) { |
| 117 | var newTypedArray = new constructor(arg0); |
| 118 | } else { |
| 119 | var newTypedArray = new constructor(arg0, arg1, arg2); |
| 120 | } |
| 121 | if (!%_IsTypedArray(newTypedArray)) throw MakeTypeError(kNotTypedArray); |
| 122 | // TODO(littledan): Check for being detached, here and elsewhere |
| 123 | // All callers where the first argument is a Number have no additional |
| 124 | // arguments. |
| 125 | if (IS_NUMBER(arg0) && %_TypedArrayGetLength(newTypedArray) < arg0) { |
| 126 | throw MakeTypeError(kTypedArrayTooShort); |
| 127 | } |
| 128 | return newTypedArray; |
| 129 | } |
| 130 | |
| 131 | function TypedArraySpeciesCreate(exemplar, arg0, arg1, arg2, conservative) { |
| 132 | var defaultConstructor = TypedArrayDefaultConstructor(exemplar); |
| 133 | var constructor = SpeciesConstructor(exemplar, defaultConstructor, |
| 134 | conservative); |
| 135 | return TypedArrayCreate(constructor, arg0, arg1, arg2); |
| 136 | } |
| 137 | |
| 138 | macro TYPED_ARRAY_CONSTRUCTOR(ARRAY_ID, NAME, ELEMENT_SIZE) |
| 139 | function NAMEConstructByArrayBuffer(obj, buffer, byteOffset, length) { |
| 140 | if (!IS_UNDEFINED(byteOffset)) { |
| 141 | byteOffset = ToPositiveInteger(byteOffset, kInvalidTypedArrayLength); |
| 142 | } |
| 143 | if (!IS_UNDEFINED(length)) { |
| 144 | length = ToPositiveInteger(length, kInvalidTypedArrayLength); |
| 145 | } |
| 146 | |
| 147 | var bufferByteLength = %_ArrayBufferGetByteLength(buffer); |
| 148 | var offset; |
| 149 | if (IS_UNDEFINED(byteOffset)) { |
| 150 | offset = 0; |
| 151 | } else { |
| 152 | offset = byteOffset; |
| 153 | |
| 154 | if (offset % ELEMENT_SIZE !== 0) { |
| 155 | throw MakeRangeError(kInvalidTypedArrayAlignment, |
| 156 | "start offset", "NAME", ELEMENT_SIZE); |
| 157 | } |
| 158 | if (offset > bufferByteLength) { |
| 159 | throw MakeRangeError(kInvalidTypedArrayOffset); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | var newByteLength; |
| 164 | var newLength; |
| 165 | if (IS_UNDEFINED(length)) { |
| 166 | if (bufferByteLength % ELEMENT_SIZE !== 0) { |
| 167 | throw MakeRangeError(kInvalidTypedArrayAlignment, |
| 168 | "byte length", "NAME", ELEMENT_SIZE); |
| 169 | } |
| 170 | newByteLength = bufferByteLength - offset; |
| 171 | newLength = newByteLength / ELEMENT_SIZE; |
| 172 | } else { |
| 173 | var newLength = length; |
| 174 | newByteLength = newLength * ELEMENT_SIZE; |
| 175 | } |
| 176 | if ((offset + newByteLength > bufferByteLength) |
| 177 | || (newLength > %_MaxSmi())) { |
| 178 | throw MakeRangeError(kInvalidTypedArrayLength); |
| 179 | } |
| 180 | %_TypedArrayInitialize(obj, ARRAY_ID, buffer, offset, newByteLength, true); |
| 181 | } |
| 182 | |
| 183 | function NAMEConstructByLength(obj, length) { |
| 184 | var l = IS_UNDEFINED(length) ? |
| 185 | 0 : ToPositiveInteger(length, kInvalidTypedArrayLength); |
| 186 | if (l > %_MaxSmi()) { |
| 187 | throw MakeRangeError(kInvalidTypedArrayLength); |
| 188 | } |
| 189 | var byteLength = l * ELEMENT_SIZE; |
| 190 | if (byteLength > %_TypedArrayMaxSizeInHeap()) { |
| 191 | var buffer = new GlobalArrayBuffer(byteLength); |
| 192 | %_TypedArrayInitialize(obj, ARRAY_ID, buffer, 0, byteLength, true); |
| 193 | } else { |
| 194 | %_TypedArrayInitialize(obj, ARRAY_ID, null, 0, byteLength, true); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | function NAMEConstructByArrayLike(obj, arrayLike) { |
| 199 | var length = arrayLike.length; |
| 200 | var l = ToPositiveInteger(length, kInvalidTypedArrayLength); |
| 201 | |
| 202 | if (l > %_MaxSmi()) { |
| 203 | throw MakeRangeError(kInvalidTypedArrayLength); |
| 204 | } |
| 205 | var initialized = false; |
| 206 | var byteLength = l * ELEMENT_SIZE; |
| 207 | if (byteLength <= %_TypedArrayMaxSizeInHeap()) { |
| 208 | %_TypedArrayInitialize(obj, ARRAY_ID, null, 0, byteLength, false); |
| 209 | } else { |
| 210 | initialized = |
| 211 | %TypedArrayInitializeFromArrayLike(obj, ARRAY_ID, arrayLike, l); |
| 212 | } |
| 213 | if (!initialized) { |
| 214 | for (var i = 0; i < l; i++) { |
| 215 | // It is crucial that we let any execptions from arrayLike[i] |
| 216 | // propagate outside the function. |
| 217 | obj[i] = arrayLike[i]; |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | function NAMEConstructByIterable(obj, iterable, iteratorFn) { |
| 223 | var list = new InternalArray(); |
| 224 | // Reading the Symbol.iterator property of iterable twice would be |
| 225 | // observable with getters, so instead, we call the function which |
| 226 | // was already looked up, and wrap it in another iterable. The |
| 227 | // __proto__ of the new iterable is set to null to avoid any chance |
| 228 | // of modifications to Object.prototype being observable here. |
| 229 | var iterator = %_Call(iteratorFn, iterable); |
| 230 | var newIterable = { |
| 231 | __proto__: null |
| 232 | }; |
| 233 | // TODO(littledan): Computed properties don't work yet in nosnap. |
| 234 | // Rephrase when they do. |
| 235 | newIterable[iteratorSymbol] = function() { return iterator; } |
| 236 | for (var value of newIterable) { |
| 237 | list.push(value); |
| 238 | } |
| 239 | NAMEConstructByArrayLike(obj, list); |
| 240 | } |
| 241 | |
| 242 | function NAMEConstructor(arg1, arg2, arg3) { |
| 243 | if (!IS_UNDEFINED(new.target)) { |
| 244 | if (IS_ARRAYBUFFER(arg1) || IS_SHAREDARRAYBUFFER(arg1)) { |
| 245 | NAMEConstructByArrayBuffer(this, arg1, arg2, arg3); |
| 246 | } else if (IS_NUMBER(arg1) || IS_STRING(arg1) || |
| 247 | IS_BOOLEAN(arg1) || IS_UNDEFINED(arg1)) { |
| 248 | NAMEConstructByLength(this, arg1); |
| 249 | } else { |
| 250 | // TODO(littledan): If arg1 is a TypedArray, follow the constructor |
| 251 | // path in ES2015 22.2.4.3, and call SpeciesConstructor, in a |
| 252 | // path that seems to be an optimized version of what's below, but |
| 253 | // in an observably different way. |
| 254 | var iteratorFn = arg1[iteratorSymbol]; |
| 255 | if (IS_UNDEFINED(iteratorFn) || iteratorFn === ArrayValues) { |
| 256 | NAMEConstructByArrayLike(this, arg1); |
| 257 | } else { |
| 258 | NAMEConstructByIterable(this, arg1, iteratorFn); |
| 259 | } |
| 260 | } |
| 261 | } else { |
| 262 | throw MakeTypeError(kConstructorNotFunction, "NAME") |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | // TODO(littledan): Remove this performance workaround BUG(chromium:579905) |
| 267 | function NAME_GetLength() { |
| 268 | if (!(%_ClassOf(this) === 'NAME')) { |
| 269 | throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.length", this); |
| 270 | } |
| 271 | return %_TypedArrayGetLength(this); |
| 272 | } |
| 273 | |
| 274 | function NAMESubArray(begin, end) { |
| 275 | var beginInt = TO_INTEGER(begin); |
| 276 | if (!IS_UNDEFINED(end)) { |
| 277 | var endInt = TO_INTEGER(end); |
| 278 | var srcLength = %_TypedArrayGetLength(this); |
| 279 | } else { |
| 280 | var srcLength = %_TypedArrayGetLength(this); |
| 281 | var endInt = srcLength; |
| 282 | } |
| 283 | |
| 284 | if (beginInt < 0) { |
| 285 | beginInt = MaxSimple(0, srcLength + beginInt); |
| 286 | } else { |
| 287 | beginInt = MinSimple(beginInt, srcLength); |
| 288 | } |
| 289 | |
| 290 | if (endInt < 0) { |
| 291 | endInt = MaxSimple(0, srcLength + endInt); |
| 292 | } else { |
| 293 | endInt = MinSimple(endInt, srcLength); |
| 294 | } |
| 295 | |
| 296 | if (endInt < beginInt) { |
| 297 | endInt = beginInt; |
| 298 | } |
| 299 | |
| 300 | var newLength = endInt - beginInt; |
| 301 | var beginByteOffset = |
| 302 | %_ArrayBufferViewGetByteOffset(this) + beginInt * ELEMENT_SIZE; |
| 303 | return TypedArraySpeciesCreate(this, %TypedArrayGetBuffer(this), |
| 304 | beginByteOffset, newLength, true); |
| 305 | } |
| 306 | endmacro |
| 307 | |
| 308 | TYPED_ARRAYS(TYPED_ARRAY_CONSTRUCTOR) |
| 309 | |
| 310 | function TypedArraySubArray(begin, end) { |
| 311 | switch (%_ClassOf(this)) { |
| 312 | macro TYPED_ARRAY_SUBARRAY_CASE(ARRAY_ID, NAME, ELEMENT_SIZE) |
| 313 | case "NAME": |
| 314 | return %_Call(NAMESubArray, this, begin, end); |
| 315 | endmacro |
| 316 | TYPED_ARRAYS(TYPED_ARRAY_SUBARRAY_CASE) |
| 317 | } |
| 318 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 319 | "get TypedArray.prototype.subarray", this); |
| 320 | } |
| 321 | %SetForceInlineFlag(TypedArraySubArray); |
| 322 | |
| 323 | function TypedArrayGetBuffer() { |
| 324 | if (!%_IsTypedArray(this)) { |
| 325 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 326 | "get TypedArray.prototype.buffer", this); |
| 327 | } |
| 328 | return %TypedArrayGetBuffer(this); |
| 329 | } |
| 330 | %SetForceInlineFlag(TypedArrayGetBuffer); |
| 331 | |
| 332 | function TypedArrayGetByteLength() { |
| 333 | if (!%_IsTypedArray(this)) { |
| 334 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 335 | "get TypedArray.prototype.byteLength", this); |
| 336 | } |
| 337 | return %_ArrayBufferViewGetByteLength(this); |
| 338 | } |
| 339 | %SetForceInlineFlag(TypedArrayGetByteLength); |
| 340 | |
| 341 | function TypedArrayGetByteOffset() { |
| 342 | if (!%_IsTypedArray(this)) { |
| 343 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 344 | "get TypedArray.prototype.byteOffset", this); |
| 345 | } |
| 346 | return %_ArrayBufferViewGetByteOffset(this); |
| 347 | } |
| 348 | %SetForceInlineFlag(TypedArrayGetByteOffset); |
| 349 | |
| 350 | function TypedArrayGetLength() { |
| 351 | if (!%_IsTypedArray(this)) { |
| 352 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 353 | "get TypedArray.prototype.length", this); |
| 354 | } |
| 355 | return %_TypedArrayGetLength(this); |
| 356 | } |
| 357 | %SetForceInlineFlag(TypedArrayGetLength); |
| 358 | |
| 359 | |
| 360 | |
| 361 | function TypedArraySetFromArrayLike(target, source, sourceLength, offset) { |
| 362 | if (offset > 0) { |
| 363 | for (var i = 0; i < sourceLength; i++) { |
| 364 | target[offset + i] = source[i]; |
| 365 | } |
| 366 | } |
| 367 | else { |
| 368 | for (var i = 0; i < sourceLength; i++) { |
| 369 | target[i] = source[i]; |
| 370 | } |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | function TypedArraySetFromOverlappingTypedArray(target, source, offset) { |
| 375 | var sourceElementSize = source.BYTES_PER_ELEMENT; |
| 376 | var targetElementSize = target.BYTES_PER_ELEMENT; |
| 377 | var sourceLength = source.length; |
| 378 | |
| 379 | // Copy left part. |
| 380 | function CopyLeftPart() { |
| 381 | // First un-mutated byte after the next write |
| 382 | var targetPtr = target.byteOffset + (offset + 1) * targetElementSize; |
| 383 | // Next read at sourcePtr. We do not care for memory changing before |
| 384 | // sourcePtr - we have already copied it. |
| 385 | var sourcePtr = source.byteOffset; |
| 386 | for (var leftIndex = 0; |
| 387 | leftIndex < sourceLength && targetPtr <= sourcePtr; |
| 388 | leftIndex++) { |
| 389 | target[offset + leftIndex] = source[leftIndex]; |
| 390 | targetPtr += targetElementSize; |
| 391 | sourcePtr += sourceElementSize; |
| 392 | } |
| 393 | return leftIndex; |
| 394 | } |
| 395 | var leftIndex = CopyLeftPart(); |
| 396 | |
| 397 | // Copy rigth part; |
| 398 | function CopyRightPart() { |
| 399 | // First unmutated byte before the next write |
| 400 | var targetPtr = |
| 401 | target.byteOffset + (offset + sourceLength - 1) * targetElementSize; |
| 402 | // Next read before sourcePtr. We do not care for memory changing after |
| 403 | // sourcePtr - we have already copied it. |
| 404 | var sourcePtr = |
| 405 | source.byteOffset + sourceLength * sourceElementSize; |
| 406 | for(var rightIndex = sourceLength - 1; |
| 407 | rightIndex >= leftIndex && targetPtr >= sourcePtr; |
| 408 | rightIndex--) { |
| 409 | target[offset + rightIndex] = source[rightIndex]; |
| 410 | targetPtr -= targetElementSize; |
| 411 | sourcePtr -= sourceElementSize; |
| 412 | } |
| 413 | return rightIndex; |
| 414 | } |
| 415 | var rightIndex = CopyRightPart(); |
| 416 | |
| 417 | var temp = new GlobalArray(rightIndex + 1 - leftIndex); |
| 418 | for (var i = leftIndex; i <= rightIndex; i++) { |
| 419 | temp[i - leftIndex] = source[i]; |
| 420 | } |
| 421 | for (i = leftIndex; i <= rightIndex; i++) { |
| 422 | target[offset + i] = temp[i - leftIndex]; |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | function TypedArraySet(obj, offset) { |
| 427 | var intOffset = IS_UNDEFINED(offset) ? 0 : TO_INTEGER(offset); |
| 428 | if (intOffset < 0) throw MakeTypeError(kTypedArraySetNegativeOffset); |
| 429 | |
| 430 | if (intOffset > %_MaxSmi()) { |
| 431 | throw MakeRangeError(kTypedArraySetSourceTooLarge); |
| 432 | } |
| 433 | switch (%TypedArraySetFastCases(this, obj, intOffset)) { |
| 434 | // These numbers should be synchronized with runtime.cc. |
| 435 | case 0: // TYPED_ARRAY_SET_TYPED_ARRAY_SAME_TYPE |
| 436 | return; |
| 437 | case 1: // TYPED_ARRAY_SET_TYPED_ARRAY_OVERLAPPING |
| 438 | TypedArraySetFromOverlappingTypedArray(this, obj, intOffset); |
| 439 | return; |
| 440 | case 2: // TYPED_ARRAY_SET_TYPED_ARRAY_NONOVERLAPPING |
| 441 | TypedArraySetFromArrayLike(this, obj, obj.length, intOffset); |
| 442 | return; |
| 443 | case 3: // TYPED_ARRAY_SET_NON_TYPED_ARRAY |
| 444 | var l = obj.length; |
| 445 | if (IS_UNDEFINED(l)) { |
| 446 | if (IS_NUMBER(obj)) { |
| 447 | // For number as a first argument, throw TypeError |
| 448 | // instead of silently ignoring the call, so that |
| 449 | // the user knows (s)he did something wrong. |
| 450 | // (Consistent with Firefox and Blink/WebKit) |
| 451 | throw MakeTypeError(kInvalidArgument); |
| 452 | } |
| 453 | return; |
| 454 | } |
| 455 | l = TO_LENGTH(l); |
| 456 | if (intOffset + l > this.length) { |
| 457 | throw MakeRangeError(kTypedArraySetSourceTooLarge); |
| 458 | } |
| 459 | TypedArraySetFromArrayLike(this, obj, l, intOffset); |
| 460 | return; |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | function TypedArrayGetToStringTag() { |
| 465 | if (!%_IsTypedArray(this)) return; |
| 466 | var name = %_ClassOf(this); |
| 467 | if (IS_UNDEFINED(name)) return; |
| 468 | return name; |
| 469 | } |
| 470 | |
| 471 | |
| 472 | function TypedArrayCopyWithin(target, start, end) { |
| 473 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 474 | |
| 475 | var length = %_TypedArrayGetLength(this); |
| 476 | |
| 477 | // TODO(littledan): Replace with a memcpy for better performance |
| 478 | return InnerArrayCopyWithin(target, start, end, this, length); |
| 479 | } |
| 480 | %FunctionSetLength(TypedArrayCopyWithin, 2); |
| 481 | |
| 482 | |
| 483 | // ES6 draft 05-05-15, section 22.2.3.7 |
| 484 | function TypedArrayEvery(f, receiver) { |
| 485 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 486 | |
| 487 | var length = %_TypedArrayGetLength(this); |
| 488 | |
| 489 | return InnerArrayEvery(f, receiver, this, length); |
| 490 | } |
| 491 | %FunctionSetLength(TypedArrayEvery, 1); |
| 492 | |
| 493 | |
| 494 | // ES6 draft 08-24-14, section 22.2.3.12 |
| 495 | function TypedArrayForEach(f, receiver) { |
| 496 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 497 | |
| 498 | var length = %_TypedArrayGetLength(this); |
| 499 | |
| 500 | InnerArrayForEach(f, receiver, this, length); |
| 501 | } |
| 502 | %FunctionSetLength(TypedArrayForEach, 1); |
| 503 | |
| 504 | |
| 505 | // ES6 draft 04-05-14 section 22.2.3.8 |
| 506 | function TypedArrayFill(value, start, end) { |
| 507 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 508 | |
| 509 | var length = %_TypedArrayGetLength(this); |
| 510 | |
| 511 | return InnerArrayFill(value, start, end, this, length); |
| 512 | } |
| 513 | %FunctionSetLength(TypedArrayFill, 1); |
| 514 | |
| 515 | |
| 516 | // ES6 draft 07-15-13, section 22.2.3.9 |
| 517 | function TypedArrayFilter(f, thisArg) { |
| 518 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 519 | |
| 520 | var length = %_TypedArrayGetLength(this); |
| 521 | if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f); |
| 522 | var result = new InternalArray(); |
| 523 | InnerArrayFilter(f, thisArg, this, length, result); |
| 524 | var captured = result.length; |
| 525 | var output = TypedArraySpeciesCreate(this, captured); |
| 526 | for (var i = 0; i < captured; i++) { |
| 527 | output[i] = result[i]; |
| 528 | } |
| 529 | return output; |
| 530 | } |
| 531 | %FunctionSetLength(TypedArrayFilter, 1); |
| 532 | |
| 533 | |
| 534 | // ES6 draft 07-15-13, section 22.2.3.10 |
| 535 | function TypedArrayFind(predicate, thisArg) { |
| 536 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 537 | |
| 538 | var length = %_TypedArrayGetLength(this); |
| 539 | |
| 540 | return InnerArrayFind(predicate, thisArg, this, length); |
| 541 | } |
| 542 | %FunctionSetLength(TypedArrayFind, 1); |
| 543 | |
| 544 | |
| 545 | // ES6 draft 07-15-13, section 22.2.3.11 |
| 546 | function TypedArrayFindIndex(predicate, thisArg) { |
| 547 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 548 | |
| 549 | var length = %_TypedArrayGetLength(this); |
| 550 | |
| 551 | return InnerArrayFindIndex(predicate, thisArg, this, length); |
| 552 | } |
| 553 | %FunctionSetLength(TypedArrayFindIndex, 1); |
| 554 | |
| 555 | |
| 556 | // ES6 draft 05-18-15, section 22.2.3.21 |
| 557 | function TypedArrayReverse() { |
| 558 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 559 | |
| 560 | var length = %_TypedArrayGetLength(this); |
| 561 | |
| 562 | return PackedArrayReverse(this, length); |
| 563 | } |
| 564 | |
| 565 | |
| 566 | function TypedArrayComparefn(x, y) { |
| 567 | if (IsNaN(x) && IsNaN(y)) { |
| 568 | return IsNaN(y) ? 0 : 1; |
| 569 | } |
| 570 | if (IsNaN(x)) { |
| 571 | return 1; |
| 572 | } |
| 573 | if (x === 0 && x === y) { |
| 574 | if (%_IsMinusZero(x)) { |
| 575 | if (!%_IsMinusZero(y)) { |
| 576 | return -1; |
| 577 | } |
| 578 | } else if (%_IsMinusZero(y)) { |
| 579 | return 1; |
| 580 | } |
| 581 | } |
| 582 | return x - y; |
| 583 | } |
| 584 | |
| 585 | |
| 586 | // ES6 draft 05-18-15, section 22.2.3.25 |
| 587 | function TypedArraySort(comparefn) { |
| 588 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 589 | |
| 590 | var length = %_TypedArrayGetLength(this); |
| 591 | |
| 592 | if (IS_UNDEFINED(comparefn)) { |
| 593 | comparefn = TypedArrayComparefn; |
| 594 | } |
| 595 | |
| 596 | return InnerArraySort(this, length, comparefn); |
| 597 | } |
| 598 | |
| 599 | |
| 600 | // ES6 section 22.2.3.13 |
| 601 | function TypedArrayIndexOf(element, index) { |
| 602 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 603 | |
| 604 | var length = %_TypedArrayGetLength(this); |
| 605 | return InnerArrayIndexOf(this, element, index, length); |
| 606 | } |
| 607 | %FunctionSetLength(TypedArrayIndexOf, 1); |
| 608 | |
| 609 | |
| 610 | // ES6 section 22.2.3.16 |
| 611 | function TypedArrayLastIndexOf(element, index) { |
| 612 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 613 | |
| 614 | var length = %_TypedArrayGetLength(this); |
| 615 | |
| 616 | return InnerArrayLastIndexOf(this, element, index, length, |
| 617 | %_ArgumentsLength()); |
| 618 | } |
| 619 | %FunctionSetLength(TypedArrayLastIndexOf, 1); |
| 620 | |
| 621 | |
| 622 | // ES6 draft 07-15-13, section 22.2.3.18 |
| 623 | function TypedArrayMap(f, thisArg) { |
| 624 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 625 | |
| 626 | var length = %_TypedArrayGetLength(this); |
| 627 | var result = TypedArraySpeciesCreate(this, length); |
| 628 | if (!IS_CALLABLE(f)) throw MakeTypeError(kCalledNonCallable, f); |
| 629 | for (var i = 0; i < length; i++) { |
| 630 | var element = this[i]; |
| 631 | result[i] = %_Call(f, thisArg, element, i, this); |
| 632 | } |
| 633 | return result; |
| 634 | } |
| 635 | %FunctionSetLength(TypedArrayMap, 1); |
| 636 | |
| 637 | |
| 638 | // ES6 draft 05-05-15, section 22.2.3.24 |
| 639 | function TypedArraySome(f, receiver) { |
| 640 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 641 | |
| 642 | var length = %_TypedArrayGetLength(this); |
| 643 | |
| 644 | return InnerArraySome(f, receiver, this, length); |
| 645 | } |
| 646 | %FunctionSetLength(TypedArraySome, 1); |
| 647 | |
| 648 | |
| 649 | // ES6 section 22.2.3.27 |
| 650 | function TypedArrayToLocaleString() { |
| 651 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 652 | |
| 653 | var length = %_TypedArrayGetLength(this); |
| 654 | |
| 655 | return InnerArrayToLocaleString(this, length); |
| 656 | } |
| 657 | |
| 658 | |
| 659 | // ES6 section 22.2.3.28 |
| 660 | function TypedArrayToString() { |
| 661 | return %_Call(ArrayToString, this); |
| 662 | } |
| 663 | |
| 664 | |
| 665 | // ES6 section 22.2.3.14 |
| 666 | function TypedArrayJoin(separator) { |
| 667 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 668 | |
| 669 | var length = %_TypedArrayGetLength(this); |
| 670 | |
| 671 | return InnerArrayJoin(separator, this, length); |
| 672 | } |
| 673 | |
| 674 | |
| 675 | // ES6 draft 07-15-13, section 22.2.3.19 |
| 676 | function TypedArrayReduce(callback, current) { |
| 677 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 678 | |
| 679 | var length = %_TypedArrayGetLength(this); |
| 680 | return InnerArrayReduce(callback, current, this, length, |
| 681 | %_ArgumentsLength()); |
| 682 | } |
| 683 | %FunctionSetLength(TypedArrayReduce, 1); |
| 684 | |
| 685 | |
| 686 | // ES6 draft 07-15-13, section 22.2.3.19 |
| 687 | function TypedArrayReduceRight(callback, current) { |
| 688 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 689 | |
| 690 | var length = %_TypedArrayGetLength(this); |
| 691 | return InnerArrayReduceRight(callback, current, this, length, |
| 692 | %_ArgumentsLength()); |
| 693 | } |
| 694 | %FunctionSetLength(TypedArrayReduceRight, 1); |
| 695 | |
| 696 | |
| 697 | function TypedArraySlice(start, end) { |
| 698 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 699 | var len = %_TypedArrayGetLength(this); |
| 700 | |
| 701 | var relativeStart = TO_INTEGER(start); |
| 702 | |
| 703 | var k; |
| 704 | if (relativeStart < 0) { |
| 705 | k = MaxSimple(len + relativeStart, 0); |
| 706 | } else { |
| 707 | k = MinSimple(relativeStart, len); |
| 708 | } |
| 709 | |
| 710 | var relativeEnd; |
| 711 | if (IS_UNDEFINED(end)) { |
| 712 | relativeEnd = len; |
| 713 | } else { |
| 714 | relativeEnd = TO_INTEGER(end); |
| 715 | } |
| 716 | |
| 717 | var final; |
| 718 | if (relativeEnd < 0) { |
| 719 | final = MaxSimple(len + relativeEnd, 0); |
| 720 | } else { |
| 721 | final = MinSimple(relativeEnd, len); |
| 722 | } |
| 723 | |
| 724 | var count = MaxSimple(final - k, 0); |
| 725 | var array = TypedArraySpeciesCreate(this, count); |
| 726 | // The code below is the 'then' branch; the 'else' branch species |
| 727 | // a memcpy. Because V8 doesn't canonicalize NaN, the difference is |
| 728 | // unobservable. |
| 729 | var n = 0; |
| 730 | while (k < final) { |
| 731 | var kValue = this[k]; |
| 732 | array[n] = kValue; |
| 733 | k++; |
| 734 | n++; |
| 735 | } |
| 736 | return array; |
| 737 | } |
| 738 | |
| 739 | |
| 740 | // ES2016 draft, section 22.2.3.14 |
| 741 | function TypedArrayIncludes(searchElement, fromIndex) { |
| 742 | if (!%_IsTypedArray(this)) throw MakeTypeError(kNotTypedArray); |
| 743 | |
| 744 | var length = %_TypedArrayGetLength(this); |
| 745 | |
| 746 | return InnerArrayIncludes(searchElement, fromIndex, this, length); |
| 747 | } |
| 748 | %FunctionSetLength(TypedArrayIncludes, 1); |
| 749 | |
| 750 | |
| 751 | // ES6 draft 08-24-14, section 22.2.2.2 |
| 752 | function TypedArrayOf() { |
| 753 | var length = %_ArgumentsLength(); |
| 754 | var array = TypedArrayCreate(this, length); |
| 755 | for (var i = 0; i < length; i++) { |
| 756 | array[i] = %_Arguments(i); |
| 757 | } |
| 758 | return array; |
| 759 | } |
| 760 | |
| 761 | |
| 762 | function TypedArrayFrom(source, mapfn, thisArg) { |
| 763 | // TODO(littledan): Investigate if there is a receiver which could be |
| 764 | // faster to accumulate on than Array, e.g., a TypedVector. |
| 765 | // TODO(littledan): Rewrite this code to ensure that things happen |
| 766 | // in the right order, e.g., the constructor needs to be called before |
| 767 | // the mapping function on array-likes. |
| 768 | var array = %_Call(ArrayFrom, GlobalArray, source, mapfn, thisArg); |
| 769 | return TypedArrayCreate(this, array); |
| 770 | } |
| 771 | %FunctionSetLength(TypedArrayFrom, 1); |
| 772 | |
| 773 | function TypedArray() { |
| 774 | if (IS_UNDEFINED(new.target)) { |
| 775 | throw MakeTypeError(kConstructorNonCallable, "TypedArray"); |
| 776 | } |
| 777 | if (new.target === TypedArray) { |
| 778 | throw MakeTypeError(kConstructAbstractClass, "TypedArray"); |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | // ------------------------------------------------------------------- |
| 783 | |
| 784 | %FunctionSetPrototype(TypedArray, new GlobalObject()); |
| 785 | %AddNamedProperty(TypedArray.prototype, |
| 786 | "constructor", TypedArray, DONT_ENUM); |
| 787 | utils.InstallFunctions(TypedArray, DONT_ENUM | DONT_DELETE | READ_ONLY, [ |
| 788 | "from", TypedArrayFrom, |
| 789 | "of", TypedArrayOf |
| 790 | ]); |
| 791 | utils.InstallGetter(TypedArray.prototype, "buffer", TypedArrayGetBuffer); |
| 792 | utils.InstallGetter(TypedArray.prototype, "byteOffset", TypedArrayGetByteOffset, |
| 793 | DONT_ENUM | DONT_DELETE); |
| 794 | utils.InstallGetter(TypedArray.prototype, "byteLength", |
| 795 | TypedArrayGetByteLength, DONT_ENUM | DONT_DELETE); |
| 796 | utils.InstallGetter(TypedArray.prototype, "length", TypedArrayGetLength, |
| 797 | DONT_ENUM | DONT_DELETE); |
| 798 | utils.InstallGetter(TypedArray.prototype, toStringTagSymbol, |
| 799 | TypedArrayGetToStringTag); |
| 800 | utils.InstallFunctions(TypedArray.prototype, DONT_ENUM, [ |
| 801 | "subarray", TypedArraySubArray, |
| 802 | "set", TypedArraySet, |
| 803 | "copyWithin", TypedArrayCopyWithin, |
| 804 | "every", TypedArrayEvery, |
| 805 | "fill", TypedArrayFill, |
| 806 | "filter", TypedArrayFilter, |
| 807 | "find", TypedArrayFind, |
| 808 | "findIndex", TypedArrayFindIndex, |
| 809 | "includes", TypedArrayIncludes, |
| 810 | "indexOf", TypedArrayIndexOf, |
| 811 | "join", TypedArrayJoin, |
| 812 | "lastIndexOf", TypedArrayLastIndexOf, |
| 813 | "forEach", TypedArrayForEach, |
| 814 | "map", TypedArrayMap, |
| 815 | "reduce", TypedArrayReduce, |
| 816 | "reduceRight", TypedArrayReduceRight, |
| 817 | "reverse", TypedArrayReverse, |
| 818 | "slice", TypedArraySlice, |
| 819 | "some", TypedArraySome, |
| 820 | "sort", TypedArraySort, |
| 821 | "toString", TypedArrayToString, |
| 822 | "toLocaleString", TypedArrayToLocaleString |
| 823 | ]); |
| 824 | |
| 825 | |
| 826 | macro SETUP_TYPED_ARRAY(ARRAY_ID, NAME, ELEMENT_SIZE) |
| 827 | %SetCode(GlobalNAME, NAMEConstructor); |
| 828 | %FunctionSetPrototype(GlobalNAME, new GlobalObject()); |
| 829 | %InternalSetPrototype(GlobalNAME, TypedArray); |
| 830 | %InternalSetPrototype(GlobalNAME.prototype, TypedArray.prototype); |
| 831 | |
| 832 | %AddNamedProperty(GlobalNAME, "BYTES_PER_ELEMENT", ELEMENT_SIZE, |
| 833 | READ_ONLY | DONT_ENUM | DONT_DELETE); |
| 834 | |
| 835 | %AddNamedProperty(GlobalNAME.prototype, |
| 836 | "constructor", global.NAME, DONT_ENUM); |
| 837 | %AddNamedProperty(GlobalNAME.prototype, |
| 838 | "BYTES_PER_ELEMENT", ELEMENT_SIZE, |
| 839 | READ_ONLY | DONT_ENUM | DONT_DELETE); |
| 840 | // TODO(littledan): Remove this performance workaround BUG(chromium:579905) |
| 841 | utils.InstallGetter(GlobalNAME.prototype, "length", NAME_GetLength, |
| 842 | DONT_ENUM | DONT_DELETE); |
| 843 | endmacro |
| 844 | |
| 845 | TYPED_ARRAYS(SETUP_TYPED_ARRAY) |
| 846 | |
| 847 | // --------------------------- DataView ----------------------------- |
| 848 | |
| 849 | function DataViewConstructor(buffer, byteOffset, byteLength) { // length = 3 |
| 850 | if (IS_UNDEFINED(new.target)) { |
| 851 | throw MakeTypeError(kConstructorNotFunction, "DataView"); |
| 852 | } |
| 853 | |
| 854 | // TODO(binji): support SharedArrayBuffers? |
| 855 | if (!IS_ARRAYBUFFER(buffer)) throw MakeTypeError(kDataViewNotArrayBuffer); |
| 856 | if (!IS_UNDEFINED(byteOffset)) { |
| 857 | byteOffset = ToPositiveInteger(byteOffset, kInvalidDataViewOffset); |
| 858 | } |
| 859 | if (!IS_UNDEFINED(byteLength)) { |
| 860 | byteLength = TO_INTEGER(byteLength); |
| 861 | } |
| 862 | |
| 863 | var bufferByteLength = %_ArrayBufferGetByteLength(buffer); |
| 864 | |
| 865 | var offset = IS_UNDEFINED(byteOffset) ? 0 : byteOffset; |
| 866 | if (offset > bufferByteLength) throw MakeRangeError(kInvalidDataViewOffset); |
| 867 | |
| 868 | var length = IS_UNDEFINED(byteLength) |
| 869 | ? bufferByteLength - offset |
| 870 | : byteLength; |
| 871 | if (length < 0 || offset + length > bufferByteLength) { |
| 872 | throw new MakeRangeError(kInvalidDataViewLength); |
| 873 | } |
| 874 | var result = %NewObject(GlobalDataView, new.target); |
| 875 | %_DataViewInitialize(result, buffer, offset, length); |
| 876 | return result; |
| 877 | } |
| 878 | |
| 879 | function DataViewGetBufferJS() { |
| 880 | if (!IS_DATAVIEW(this)) { |
| 881 | throw MakeTypeError(kIncompatibleMethodReceiver, 'DataView.buffer', this); |
| 882 | } |
| 883 | return %DataViewGetBuffer(this); |
| 884 | } |
| 885 | |
| 886 | function DataViewGetByteOffset() { |
| 887 | if (!IS_DATAVIEW(this)) { |
| 888 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 889 | 'DataView.byteOffset', this); |
| 890 | } |
| 891 | return %_ArrayBufferViewGetByteOffset(this); |
| 892 | } |
| 893 | |
| 894 | function DataViewGetByteLength() { |
| 895 | if (!IS_DATAVIEW(this)) { |
| 896 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 897 | 'DataView.byteLength', this); |
| 898 | } |
| 899 | return %_ArrayBufferViewGetByteLength(this); |
| 900 | } |
| 901 | |
| 902 | macro DATA_VIEW_TYPES(FUNCTION) |
| 903 | FUNCTION(Int8) |
| 904 | FUNCTION(Uint8) |
| 905 | FUNCTION(Int16) |
| 906 | FUNCTION(Uint16) |
| 907 | FUNCTION(Int32) |
| 908 | FUNCTION(Uint32) |
| 909 | FUNCTION(Float32) |
| 910 | FUNCTION(Float64) |
| 911 | endmacro |
| 912 | |
| 913 | |
| 914 | macro DATA_VIEW_GETTER_SETTER(TYPENAME) |
| 915 | function DataViewGetTYPENAMEJS(offset, little_endian) { |
| 916 | if (!IS_DATAVIEW(this)) { |
| 917 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 918 | 'DataView.getTYPENAME', this); |
| 919 | } |
| 920 | if (%_ArgumentsLength() < 1) throw MakeTypeError(kInvalidArgument); |
| 921 | offset = ToPositiveInteger(offset, kInvalidDataViewAccessorOffset); |
| 922 | return %DataViewGetTYPENAME(this, offset, !!little_endian); |
| 923 | } |
| 924 | |
| 925 | function DataViewSetTYPENAMEJS(offset, value, little_endian) { |
| 926 | if (!IS_DATAVIEW(this)) { |
| 927 | throw MakeTypeError(kIncompatibleMethodReceiver, |
| 928 | 'DataView.setTYPENAME', this); |
| 929 | } |
| 930 | if (%_ArgumentsLength() < 2) throw MakeTypeError(kInvalidArgument); |
| 931 | offset = ToPositiveInteger(offset, kInvalidDataViewAccessorOffset); |
| 932 | %DataViewSetTYPENAME(this, offset, TO_NUMBER(value), !!little_endian); |
| 933 | } |
| 934 | endmacro |
| 935 | |
| 936 | DATA_VIEW_TYPES(DATA_VIEW_GETTER_SETTER) |
| 937 | |
| 938 | // Setup the DataView constructor. |
| 939 | %SetCode(GlobalDataView, DataViewConstructor); |
| 940 | %FunctionSetPrototype(GlobalDataView, new GlobalObject); |
| 941 | |
| 942 | // Set up constructor property on the DataView prototype. |
| 943 | %AddNamedProperty(GlobalDataView.prototype, "constructor", GlobalDataView, |
| 944 | DONT_ENUM); |
| 945 | %AddNamedProperty(GlobalDataView.prototype, toStringTagSymbol, "DataView", |
| 946 | READ_ONLY|DONT_ENUM); |
| 947 | |
| 948 | utils.InstallGetter(GlobalDataView.prototype, "buffer", DataViewGetBufferJS); |
| 949 | utils.InstallGetter(GlobalDataView.prototype, "byteOffset", |
| 950 | DataViewGetByteOffset); |
| 951 | utils.InstallGetter(GlobalDataView.prototype, "byteLength", |
| 952 | DataViewGetByteLength); |
| 953 | |
| 954 | utils.InstallFunctions(GlobalDataView.prototype, DONT_ENUM, [ |
| 955 | "getInt8", DataViewGetInt8JS, |
| 956 | "setInt8", DataViewSetInt8JS, |
| 957 | |
| 958 | "getUint8", DataViewGetUint8JS, |
| 959 | "setUint8", DataViewSetUint8JS, |
| 960 | |
| 961 | "getInt16", DataViewGetInt16JS, |
| 962 | "setInt16", DataViewSetInt16JS, |
| 963 | |
| 964 | "getUint16", DataViewGetUint16JS, |
| 965 | "setUint16", DataViewSetUint16JS, |
| 966 | |
| 967 | "getInt32", DataViewGetInt32JS, |
| 968 | "setInt32", DataViewSetInt32JS, |
| 969 | |
| 970 | "getUint32", DataViewGetUint32JS, |
| 971 | "setUint32", DataViewSetUint32JS, |
| 972 | |
| 973 | "getFloat32", DataViewGetFloat32JS, |
| 974 | "setFloat32", DataViewSetFloat32JS, |
| 975 | |
| 976 | "getFloat64", DataViewGetFloat64JS, |
| 977 | "setFloat64", DataViewSetFloat64JS |
| 978 | ]); |
| 979 | |
| 980 | }) |