blob: 8615cc7128d3f7881987f2115603ae543df375e1 [file] [log] [blame]
/*
* Copyright (C) 2016-2021 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 "JSWebAssemblyTable.h"
#if ENABLE(WEBASSEMBLY)
#include "JSCInlines.h"
#include "JSWebAssemblyInstance.h"
#include "ObjectConstructor.h"
namespace JSC {
const ClassInfo JSWebAssemblyTable::s_info = { "WebAssembly.Table"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSWebAssemblyTable) };
JSWebAssemblyTable* JSWebAssemblyTable::tryCreate(JSGlobalObject* globalObject, VM& vm, Structure* structure, Ref<Wasm::Table>&& table)
{
auto throwScope = DECLARE_THROW_SCOPE(vm);
if (!globalObject->webAssemblyEnabled()) {
throwException(globalObject, throwScope, createEvalError(globalObject, globalObject->webAssemblyDisabledErrorMessage()));
return nullptr;
}
auto* instance = new (NotNull, allocateCell<JSWebAssemblyTable>(vm)) JSWebAssemblyTable(vm, structure, WTFMove(table));
instance->table()->setOwner(instance);
instance->finishCreation(vm);
return instance;
}
Structure* JSWebAssemblyTable::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
JSWebAssemblyTable::JSWebAssemblyTable(VM& vm, Structure* structure, Ref<Wasm::Table>&& table)
: Base(vm, structure)
, m_table(WTFMove(table))
{
}
void JSWebAssemblyTable::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
}
void JSWebAssemblyTable::destroy(JSCell* cell)
{
static_cast<JSWebAssemblyTable*>(cell)->JSWebAssemblyTable::~JSWebAssemblyTable();
}
template<typename Visitor>
void JSWebAssemblyTable::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
JSWebAssemblyTable* thisObject = jsCast<JSWebAssemblyTable*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
thisObject->table()->visitAggregate(visitor);
}
DEFINE_VISIT_CHILDREN(JSWebAssemblyTable);
bool JSWebAssemblyTable::grow(uint32_t delta, JSValue defaultValue)
{
if (delta == 0)
return true;
return !!m_table->grow(delta, defaultValue);
}
JSValue JSWebAssemblyTable::get(uint32_t index)
{
RELEASE_ASSERT(index < length());
return m_table->get(index);
}
void JSWebAssemblyTable::set(uint32_t index, JSValue value)
{
RELEASE_ASSERT(index < length());
RELEASE_ASSERT(m_table->isExternrefTable());
m_table->set(index, value);
}
void JSWebAssemblyTable::set(uint32_t index, WebAssemblyFunctionBase* function)
{
RELEASE_ASSERT(index < length());
RELEASE_ASSERT(m_table->asFuncrefTable());
auto& subThis = *static_cast<Wasm::FuncRefTable*>(&m_table.get());
subThis.setFunction(index, function, function->importableFunction(), &function->instance()->instance());
}
void JSWebAssemblyTable::clear(uint32_t index)
{
RELEASE_ASSERT(index < length());
m_table->clear(index);
}
JSObject* JSWebAssemblyTable::type(JSGlobalObject* globalObject)
{
VM& vm = globalObject->vm();
Wasm::TableElementType element = m_table->type();
JSString* elementString = nullptr;
switch (element) {
case Wasm::TableElementType::Funcref:
elementString = jsNontrivialString(vm, "anyfunc"_s);
break;
case Wasm::TableElementType::Externref:
elementString = jsNontrivialString(vm, "externref"_s);
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
JSObject* result;
auto maximum = m_table->maximum();
if (maximum) {
result = constructEmptyObject(globalObject, globalObject->objectPrototype(), 3);
result->putDirect(vm, Identifier::fromString(vm, "maximum"_s), jsNumber(*maximum));
} else
result = constructEmptyObject(globalObject, globalObject->objectPrototype(), 2);
uint32_t minimum = m_table->length();
result->putDirect(vm, Identifier::fromString(vm, "minimum"_s), jsNumber(minimum));
result->putDirect(vm, Identifier::fromString(vm, "element"_s), elementString);
return result;
}
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)