blob: 9a435cc9cb2e1ab3019435ad6dd0328d34cdab06 [file] [log] [blame]
/*
* Copyright (C) 2013-2021 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.
*/
#include "config.h"
#include "JSDataView.h"
#include "JSCInlines.h"
#include "TypeError.h"
namespace JSC {
const ClassInfo JSDataView::s_info = { "DataView"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSDataView) };
JSDataView::JSDataView(VM& vm, ConstructionContext& context, ArrayBuffer* buffer)
: Base(vm, context)
, m_buffer(buffer)
{
}
JSDataView* JSDataView::create(
JSGlobalObject* globalObject, Structure* structure, RefPtr<ArrayBuffer>&& buffer,
size_t byteOffset, size_t byteLength)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ASSERT(buffer);
if (buffer->isDetached()) {
throwTypeError(globalObject, scope, "Buffer is already detached"_s);
return nullptr;
}
if (!ArrayBufferView::verifySubRangeLength(*buffer, byteOffset, byteLength, sizeof(uint8_t))) {
throwRangeError(globalObject, scope, "Length out of range of buffer"_s);
return nullptr;
}
if (!ArrayBufferView::verifyByteOffsetAlignment(byteOffset, sizeof(uint8_t))) {
throwRangeError(globalObject, scope, "Byte offset is not aligned"_s);
return nullptr;
}
ConstructionContext context(
structure, buffer.copyRef(), byteOffset, byteLength, ConstructionContext::DataView);
ASSERT(context);
JSDataView* result =
new (NotNull, allocateCell<JSDataView>(vm)) JSDataView(vm, context, buffer.get());
result->finishCreation(vm);
return result;
}
JSDataView* JSDataView::createUninitialized(JSGlobalObject*, Structure*, size_t)
{
UNREACHABLE_FOR_PLATFORM();
return nullptr;
}
JSDataView* JSDataView::create(JSGlobalObject*, Structure*, size_t)
{
UNREACHABLE_FOR_PLATFORM();
return nullptr;
}
bool JSDataView::set(JSGlobalObject*, size_t, JSObject*, size_t, size_t)
{
UNREACHABLE_FOR_PLATFORM();
return false;
}
bool JSDataView::setIndex(JSGlobalObject*, size_t, JSValue)
{
UNREACHABLE_FOR_PLATFORM();
return false;
}
RefPtr<DataView> JSDataView::possiblySharedTypedImpl()
{
return DataView::create(possiblySharedBuffer(), byteOffset(), length());
}
RefPtr<DataView> JSDataView::unsharedTypedImpl()
{
return DataView::create(unsharedBuffer(), byteOffset(), length());
}
Structure* JSDataView::createStructure(
VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(
vm, globalObject, prototype, TypeInfo(DataViewType, StructureFlags), info(),
NonArray);
}
} // namespace JSC