mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-26 21:50:53 +00:00
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/*
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* Copyright (C) 2013-2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "JSDataView.h"
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#include "JSCInlines.h"
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#include "TypeError.h"
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namespace JSC {
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const ClassInfo JSDataView::s_info = {
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"DataView", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSDataView)};
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JSDataView::JSDataView(VM& vm, ConstructionContext& context, ArrayBuffer* buffer)
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: Base(vm, context)
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, m_buffer(buffer)
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{
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}
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JSDataView* JSDataView::create(
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JSGlobalObject* globalObject, Structure* structure, RefPtr<ArrayBuffer>&& buffer,
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unsigned byteOffset, unsigned byteLength)
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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ASSERT(buffer);
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if (buffer->isDetached()) {
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throwTypeError(globalObject, scope, "Buffer is already detached"_s);
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return nullptr;
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}
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if (!ArrayBufferView::verifySubRangeLength(*buffer, byteOffset, byteLength, sizeof(uint8_t))) {
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throwRangeError(globalObject, scope, "Length out of range of buffer"_s);
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return nullptr;
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}
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if (!ArrayBufferView::verifyByteOffsetAlignment(byteOffset, sizeof(uint8_t))) {
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throwRangeError(globalObject, scope, "Byte offset is not aligned"_s);
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return nullptr;
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}
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ConstructionContext context(
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structure, buffer.copyRef(), byteOffset, byteLength, ConstructionContext::DataView);
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ASSERT(context);
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JSDataView* result =
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new (NotNull, allocateCell<JSDataView>(vm.heap)) JSDataView(vm, context, buffer.get());
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result->finishCreation(vm);
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return result;
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}
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JSDataView* JSDataView::createUninitialized(JSGlobalObject*, Structure*, unsigned)
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{
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UNREACHABLE_FOR_PLATFORM();
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return nullptr;
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}
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JSDataView* JSDataView::create(JSGlobalObject*, Structure*, unsigned)
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{
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UNREACHABLE_FOR_PLATFORM();
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return nullptr;
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}
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bool JSDataView::set(JSGlobalObject*, unsigned, JSObject*, unsigned, unsigned)
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{
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UNREACHABLE_FOR_PLATFORM();
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return false;
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}
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bool JSDataView::setIndex(JSGlobalObject*, unsigned, JSValue)
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{
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UNREACHABLE_FOR_PLATFORM();
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return false;
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}
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RefPtr<DataView> JSDataView::possiblySharedTypedImpl()
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{
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return DataView::create(possiblySharedBuffer(), byteOffset(), length());
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}
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RefPtr<DataView> JSDataView::unsharedTypedImpl()
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{
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return DataView::create(unsharedBuffer(), byteOffset(), length());
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}
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Structure* JSDataView::createStructure(
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VM& vm, JSGlobalObject* globalObject, JSValue prototype)
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{
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return Structure::create(
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vm, globalObject, prototype, TypeInfo(DataViewType, StructureFlags), info(),
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NonArray);
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}
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} // namespace JSC
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