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- 'use strict';
- var $ = require('../internals/export');
- var global = require('../internals/global');
- var call = require('../internals/function-call');
- var DESCRIPTORS = require('../internals/descriptors');
- var TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS = require('../internals/typed-array-constructors-require-wrappers');
- var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
- var ArrayBufferModule = require('../internals/array-buffer');
- var anInstance = require('../internals/an-instance');
- var createPropertyDescriptor = require('../internals/create-property-descriptor');
- var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
- var isIntegralNumber = require('../internals/is-integral-number');
- var toLength = require('../internals/to-length');
- var toIndex = require('../internals/to-index');
- var toOffset = require('../internals/to-offset');
- var toUint8Clamped = require('../internals/to-uint8-clamped');
- var toPropertyKey = require('../internals/to-property-key');
- var hasOwn = require('../internals/has-own-property');
- var classof = require('../internals/classof');
- var isObject = require('../internals/is-object');
- var isSymbol = require('../internals/is-symbol');
- var create = require('../internals/object-create');
- var isPrototypeOf = require('../internals/object-is-prototype-of');
- var setPrototypeOf = require('../internals/object-set-prototype-of');
- var getOwnPropertyNames = require('../internals/object-get-own-property-names').f;
- var typedArrayFrom = require('../internals/typed-array-from');
- var forEach = require('../internals/array-iteration').forEach;
- var setSpecies = require('../internals/set-species');
- var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
- var definePropertyModule = require('../internals/object-define-property');
- var getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');
- var arrayFromConstructorAndList = require('../internals/array-from-constructor-and-list');
- var InternalStateModule = require('../internals/internal-state');
- var inheritIfRequired = require('../internals/inherit-if-required');
- var getInternalState = InternalStateModule.get;
- var setInternalState = InternalStateModule.set;
- var enforceInternalState = InternalStateModule.enforce;
- var nativeDefineProperty = definePropertyModule.f;
- var nativeGetOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;
- var RangeError = global.RangeError;
- var ArrayBuffer = ArrayBufferModule.ArrayBuffer;
- var ArrayBufferPrototype = ArrayBuffer.prototype;
- var DataView = ArrayBufferModule.DataView;
- var NATIVE_ARRAY_BUFFER_VIEWS = ArrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
- var TYPED_ARRAY_TAG = ArrayBufferViewCore.TYPED_ARRAY_TAG;
- var TypedArray = ArrayBufferViewCore.TypedArray;
- var TypedArrayPrototype = ArrayBufferViewCore.TypedArrayPrototype;
- var isTypedArray = ArrayBufferViewCore.isTypedArray;
- var BYTES_PER_ELEMENT = 'BYTES_PER_ELEMENT';
- var WRONG_LENGTH = 'Wrong length';
- var addGetter = function (it, key) {
- defineBuiltInAccessor(it, key, {
- configurable: true,
- get: function () {
- return getInternalState(this)[key];
- }
- });
- };
- var isArrayBuffer = function (it) {
- var klass;
- return isPrototypeOf(ArrayBufferPrototype, it) || (klass = classof(it)) === 'ArrayBuffer' || klass === 'SharedArrayBuffer';
- };
- var isTypedArrayIndex = function (target, key) {
- return isTypedArray(target)
- && !isSymbol(key)
- && key in target
- && isIntegralNumber(+key)
- && key >= 0;
- };
- var wrappedGetOwnPropertyDescriptor = function getOwnPropertyDescriptor(target, key) {
- key = toPropertyKey(key);
- return isTypedArrayIndex(target, key)
- ? createPropertyDescriptor(2, target[key])
- : nativeGetOwnPropertyDescriptor(target, key);
- };
- var wrappedDefineProperty = function defineProperty(target, key, descriptor) {
- key = toPropertyKey(key);
- if (isTypedArrayIndex(target, key)
- && isObject(descriptor)
- && hasOwn(descriptor, 'value')
- && !hasOwn(descriptor, 'get')
- && !hasOwn(descriptor, 'set')
- // TODO: add validation descriptor w/o calling accessors
- && !descriptor.configurable
- && (!hasOwn(descriptor, 'writable') || descriptor.writable)
- && (!hasOwn(descriptor, 'enumerable') || descriptor.enumerable)
- ) {
- target[key] = descriptor.value;
- return target;
- } return nativeDefineProperty(target, key, descriptor);
- };
- if (DESCRIPTORS) {
- if (!NATIVE_ARRAY_BUFFER_VIEWS) {
- getOwnPropertyDescriptorModule.f = wrappedGetOwnPropertyDescriptor;
- definePropertyModule.f = wrappedDefineProperty;
- addGetter(TypedArrayPrototype, 'buffer');
- addGetter(TypedArrayPrototype, 'byteOffset');
- addGetter(TypedArrayPrototype, 'byteLength');
- addGetter(TypedArrayPrototype, 'length');
- }
- $({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {
- getOwnPropertyDescriptor: wrappedGetOwnPropertyDescriptor,
- defineProperty: wrappedDefineProperty
- });
- module.exports = function (TYPE, wrapper, CLAMPED) {
- var BYTES = TYPE.match(/\d+/)[0] / 8;
- var CONSTRUCTOR_NAME = TYPE + (CLAMPED ? 'Clamped' : '') + 'Array';
- var GETTER = 'get' + TYPE;
- var SETTER = 'set' + TYPE;
- var NativeTypedArrayConstructor = global[CONSTRUCTOR_NAME];
- var TypedArrayConstructor = NativeTypedArrayConstructor;
- var TypedArrayConstructorPrototype = TypedArrayConstructor && TypedArrayConstructor.prototype;
- var exported = {};
- var getter = function (that, index) {
- var data = getInternalState(that);
- return data.view[GETTER](index * BYTES + data.byteOffset, true);
- };
- var setter = function (that, index, value) {
- var data = getInternalState(that);
- data.view[SETTER](index * BYTES + data.byteOffset, CLAMPED ? toUint8Clamped(value) : value, true);
- };
- var addElement = function (that, index) {
- nativeDefineProperty(that, index, {
- get: function () {
- return getter(this, index);
- },
- set: function (value) {
- return setter(this, index, value);
- },
- enumerable: true
- });
- };
- if (!NATIVE_ARRAY_BUFFER_VIEWS) {
- TypedArrayConstructor = wrapper(function (that, data, offset, $length) {
- anInstance(that, TypedArrayConstructorPrototype);
- var index = 0;
- var byteOffset = 0;
- var buffer, byteLength, length;
- if (!isObject(data)) {
- length = toIndex(data);
- byteLength = length * BYTES;
- buffer = new ArrayBuffer(byteLength);
- } else if (isArrayBuffer(data)) {
- buffer = data;
- byteOffset = toOffset(offset, BYTES);
- var $len = data.byteLength;
- if ($length === undefined) {
- if ($len % BYTES) throw new RangeError(WRONG_LENGTH);
- byteLength = $len - byteOffset;
- if (byteLength < 0) throw new RangeError(WRONG_LENGTH);
- } else {
- byteLength = toLength($length) * BYTES;
- if (byteLength + byteOffset > $len) throw new RangeError(WRONG_LENGTH);
- }
- length = byteLength / BYTES;
- } else if (isTypedArray(data)) {
- return arrayFromConstructorAndList(TypedArrayConstructor, data);
- } else {
- return call(typedArrayFrom, TypedArrayConstructor, data);
- }
- setInternalState(that, {
- buffer: buffer,
- byteOffset: byteOffset,
- byteLength: byteLength,
- length: length,
- view: new DataView(buffer)
- });
- while (index < length) addElement(that, index++);
- });
- if (setPrototypeOf) setPrototypeOf(TypedArrayConstructor, TypedArray);
- TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = create(TypedArrayPrototype);
- } else if (TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS) {
- TypedArrayConstructor = wrapper(function (dummy, data, typedArrayOffset, $length) {
- anInstance(dummy, TypedArrayConstructorPrototype);
- return inheritIfRequired(function () {
- if (!isObject(data)) return new NativeTypedArrayConstructor(toIndex(data));
- if (isArrayBuffer(data)) return $length !== undefined
- ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES), $length)
- : typedArrayOffset !== undefined
- ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES))
- : new NativeTypedArrayConstructor(data);
- if (isTypedArray(data)) return arrayFromConstructorAndList(TypedArrayConstructor, data);
- return call(typedArrayFrom, TypedArrayConstructor, data);
- }(), dummy, TypedArrayConstructor);
- });
- if (setPrototypeOf) setPrototypeOf(TypedArrayConstructor, TypedArray);
- forEach(getOwnPropertyNames(NativeTypedArrayConstructor), function (key) {
- if (!(key in TypedArrayConstructor)) {
- createNonEnumerableProperty(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);
- }
- });
- TypedArrayConstructor.prototype = TypedArrayConstructorPrototype;
- }
- if (TypedArrayConstructorPrototype.constructor !== TypedArrayConstructor) {
- createNonEnumerableProperty(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);
- }
- enforceInternalState(TypedArrayConstructorPrototype).TypedArrayConstructor = TypedArrayConstructor;
- if (TYPED_ARRAY_TAG) {
- createNonEnumerableProperty(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);
- }
- var FORCED = TypedArrayConstructor !== NativeTypedArrayConstructor;
- exported[CONSTRUCTOR_NAME] = TypedArrayConstructor;
- $({ global: true, constructor: true, forced: FORCED, sham: !NATIVE_ARRAY_BUFFER_VIEWS }, exported);
- if (!(BYTES_PER_ELEMENT in TypedArrayConstructor)) {
- createNonEnumerableProperty(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);
- }
- if (!(BYTES_PER_ELEMENT in TypedArrayConstructorPrototype)) {
- createNonEnumerableProperty(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);
- }
- setSpecies(CONSTRUCTOR_NAME);
- };
- } else module.exports = function () { /* empty */ };
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