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/*
* Copyright (C) 2016-2024 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 "JSWebAssemblyModule.h"
#if ENABLE(WEBASSEMBLY)
#include "JSCInlines.h"
#include "JSWebAssemblyCompileError.h"
#include "JSWebAssemblyLinkError.h"
#include "WasmBinding.h"
#include "WasmFormat.h"
#include "WasmModule.h"
#include "WasmModuleInformation.h"
#include <wtf/StdLibExtras.h>
#include <wtf/text/MakeString.h>
namespace JSC {
const ClassInfo JSWebAssemblyModule::s_info = { "WebAssembly.Module"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSWebAssemblyModule) };
JSWebAssemblyModule* JSWebAssemblyModule::create(VM& vm, Structure* structure, Ref<Wasm::Module>&& result)
{
auto* module = new (NotNull, allocateCell<JSWebAssemblyModule>(vm)) JSWebAssemblyModule(vm, structure, WTFMove(result));
module->finishCreation(vm);
return module;
}
Structure* JSWebAssemblyModule::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(WebAssemblyModuleType, StructureFlags), info());
}
JSWebAssemblyModule::JSWebAssemblyModule(VM& vm, Structure* structure, Ref<Wasm::Module>&& module)
: Base(vm, structure)
, m_module(WTFMove(module))
{
}
void JSWebAssemblyModule::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
// On success, a new WebAssembly.Module object is returned with [[Module]] set to the validated Ast.module.
SymbolTable* exportSymbolTable = SymbolTable::create(vm);
const Wasm::ModuleInformation& moduleInformation = m_module->moduleInformation();
{
auto offset = exportSymbolTable->takeNextScopeOffset(NoLockingNecessary);
exportSymbolTable->set(NoLockingNecessary, vm.propertyNames->starNamespacePrivateName.impl(), SymbolTableEntry(VarOffset(offset)));
}
for (auto& exp : moduleInformation.exports) {
auto offset = exportSymbolTable->takeNextScopeOffset(NoLockingNecessary);
exportSymbolTable->set(NoLockingNecessary, makeAtomString(exp.field).impl(), SymbolTableEntry(VarOffset(offset)));
}
m_exportSymbolTable.set(vm, this, exportSymbolTable);
}
void JSWebAssemblyModule::destroy(JSCell* cell)
{
static_cast<JSWebAssemblyModule*>(cell)->JSWebAssemblyModule::~JSWebAssemblyModule();
Wasm::TypeInformation::tryCleanup();
}
const Wasm::ModuleInformation& JSWebAssemblyModule::moduleInformation() const
{
return m_module->moduleInformation();
}
SymbolTable* JSWebAssemblyModule::exportSymbolTable() const
{
return m_exportSymbolTable.get();
}
Wasm::TypeIndex JSWebAssemblyModule::typeIndexFromFunctionIndexSpace(Wasm::FunctionSpaceIndex functionIndexSpace) const
{
return m_module->typeIndexFromFunctionIndexSpace(functionIndexSpace);
}
Wasm::Module& JSWebAssemblyModule::module()
{
return m_module.get();
}
template<typename Visitor>
void JSWebAssemblyModule::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
JSWebAssemblyModule* thisObject = jsCast<JSWebAssemblyModule*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_exportSymbolTable);
}
DEFINE_VISIT_CHILDREN(JSWebAssemblyModule);
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)
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