| /* |
| * Copyright (C) 2013, 2016 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "GenericTypedArrayView.h" |
| #include "JSGlobalObjectInlines.h" |
| |
| namespace JSC { |
| |
| template<typename Adaptor> |
| GenericTypedArrayView<Adaptor>::GenericTypedArrayView( |
| RefPtr<ArrayBuffer>&& buffer, unsigned byteOffset, unsigned length) |
| : ArrayBufferView(WTFMove(buffer), byteOffset, length * sizeof(typename Adaptor::Type)) |
| { |
| } |
| |
| template<typename Adaptor> |
| Ref<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::create(unsigned length) |
| { |
| auto result = tryCreate(length); |
| RELEASE_ASSERT(result); |
| return result.releaseNonNull(); |
| } |
| |
| template<typename Adaptor> |
| Ref<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::create( |
| const typename Adaptor::Type* array, unsigned length) |
| { |
| auto result = tryCreate(array, length); |
| RELEASE_ASSERT(result); |
| return result.releaseNonNull(); |
| } |
| |
| template<typename Adaptor> |
| Ref<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::create( |
| RefPtr<ArrayBuffer>&& buffer, unsigned byteOffset, unsigned length) |
| { |
| auto result = tryCreate(WTFMove(buffer), byteOffset, length); |
| RELEASE_ASSERT(result); |
| return result.releaseNonNull(); |
| } |
| |
| template<typename Adaptor> |
| RefPtr<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::tryCreate(unsigned length) |
| { |
| auto buffer = ArrayBuffer::tryCreate(length, sizeof(typename Adaptor::Type)); |
| if (!buffer) |
| return nullptr; |
| return tryCreate(WTFMove(buffer), 0, length); |
| } |
| |
| template<typename Adaptor> |
| RefPtr<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::tryCreate( |
| const typename Adaptor::Type* array, unsigned length) |
| { |
| RefPtr<GenericTypedArrayView> result = tryCreate(length); |
| if (!result) |
| return nullptr; |
| memcpy(result->data(), array, length * sizeof(typename Adaptor::Type)); |
| return result; |
| } |
| |
| template<typename Adaptor> |
| RefPtr<GenericTypedArrayView<Adaptor>> GenericTypedArrayView<Adaptor>::tryCreate( |
| RefPtr<ArrayBuffer>&& buffer, unsigned byteOffset, unsigned length) |
| { |
| if (!buffer) |
| return nullptr; |
| |
| if (!ArrayBufferView::verifySubRangeLength(*buffer, byteOffset, length, sizeof(typename Adaptor::Type)) |
| || !verifyByteOffsetAlignment(byteOffset, sizeof(typename Adaptor::Type))) { |
| return nullptr; |
| } |
| |
| return adoptRef(new GenericTypedArrayView(WTFMove(buffer), byteOffset, length)); |
| } |
| |
| template<typename Adaptor> |
| Ref<GenericTypedArrayView<Adaptor>> |
| GenericTypedArrayView<Adaptor>::createUninitialized(unsigned length) |
| { |
| auto result = tryCreateUninitialized(length); |
| RELEASE_ASSERT(result); |
| return result.releaseNonNull(); |
| } |
| |
| template<typename Adaptor> |
| RefPtr<GenericTypedArrayView<Adaptor>> |
| GenericTypedArrayView<Adaptor>::tryCreateUninitialized(unsigned length) |
| { |
| RefPtr<ArrayBuffer> buffer = |
| ArrayBuffer::tryCreateUninitialized(length, sizeof(typename Adaptor::Type)); |
| if (!buffer) |
| return nullptr; |
| return tryCreate(WTFMove(buffer), 0, length); |
| } |
| |
| template<typename Adaptor> |
| RefPtr<GenericTypedArrayView<Adaptor>> |
| GenericTypedArrayView<Adaptor>::subarray(int start) const |
| { |
| return subarray(start, length()); |
| } |
| |
| template<typename Adaptor> |
| RefPtr<GenericTypedArrayView<Adaptor>> |
| GenericTypedArrayView<Adaptor>::subarray(int start, int end) const |
| { |
| unsigned offset, length; |
| calculateOffsetAndLength(start, end, this->length(), &offset, &length); |
| ArrayBuffer* buffer = possiblySharedBuffer(); |
| ASSERT(buffer); |
| clampOffsetAndNumElements<Adaptor::Type>(*buffer, byteOffset(), &offset, &length); |
| return tryCreate(buffer, offset, length); |
| } |
| |
| template<typename Adaptor> |
| JSArrayBufferView* GenericTypedArrayView<Adaptor>::wrap(JSGlobalObject* lexicalGlobalObject, JSGlobalObject* globalObject) |
| { |
| UNUSED_PARAM(lexicalGlobalObject); |
| return Adaptor::JSViewType::create(globalObject->vm(), globalObject->typedArrayStructure(Adaptor::typeValue), this); |
| } |
| |
| } // namespace JSC |