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/*
* Copyright (C) 2022 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 "SyntheticModuleRecord.h"
#include "BuiltinNames.h"
#include "JSCInlines.h"
#include "JSInternalPromise.h"
#include "JSModuleEnvironment.h"
#include "JSModuleNamespaceObject.h"
#include "JSONObject.h"
namespace JSC {
const ClassInfo SyntheticModuleRecord::s_info = { "ModuleRecord"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(SyntheticModuleRecord) };
Structure* SyntheticModuleRecord::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
SyntheticModuleRecord* SyntheticModuleRecord::create(JSGlobalObject* globalObject, VM& vm, Structure* structure, const Identifier& moduleKey)
{
SyntheticModuleRecord* instance = new (NotNull, allocateCell<SyntheticModuleRecord>(vm)) SyntheticModuleRecord(vm, structure, moduleKey);
instance->finishCreation(globalObject, vm);
return instance;
}
SyntheticModuleRecord::SyntheticModuleRecord(VM& vm, Structure* structure, const Identifier& moduleKey)
: Base(vm, structure, moduleKey)
{
}
void SyntheticModuleRecord::destroy(JSCell* cell)
{
SyntheticModuleRecord* thisObject = static_cast<SyntheticModuleRecord*>(cell);
thisObject->SyntheticModuleRecord::~SyntheticModuleRecord();
}
void SyntheticModuleRecord::finishCreation(JSGlobalObject* globalObject, VM& vm)
{
Base::finishCreation(globalObject, vm);
ASSERT(inherits(info()));
}
template<typename Visitor>
void SyntheticModuleRecord::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
SyntheticModuleRecord* thisObject = jsCast<SyntheticModuleRecord*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
}
DEFINE_VISIT_CHILDREN(SyntheticModuleRecord);
Synchronousness SyntheticModuleRecord::link(JSGlobalObject*, JSValue)
{
return Synchronousness::Sync;
}
JSValue SyntheticModuleRecord::evaluate(JSGlobalObject*)
{
return jsUndefined();
}
SyntheticModuleRecord* SyntheticModuleRecord::tryCreateWithExportNamesAndValues(JSGlobalObject* globalObject, const Identifier& moduleKey, const Vector<Identifier, 4>& exportNames, const MarkedArgumentBuffer& exportValues)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
ASSERT(exportNames.size() == exportValues.size());
auto* moduleRecord = create(globalObject, vm, globalObject->syntheticModuleRecordStructure(), moduleKey);
SymbolTable* exportSymbolTable = SymbolTable::create(vm);
{
auto offset = exportSymbolTable->takeNextScopeOffset(NoLockingNecessary);
exportSymbolTable->set(NoLockingNecessary, vm.propertyNames->starNamespacePrivateName.impl(), SymbolTableEntry(VarOffset(offset)));
}
for (auto& exportName : exportNames) {
auto offset = exportSymbolTable->takeNextScopeOffset(NoLockingNecessary);
exportSymbolTable->set(NoLockingNecessary, exportName.impl(), SymbolTableEntry(VarOffset(offset)));
moduleRecord->addExportEntry(ExportEntry::createLocal(exportName, exportName));
}
JSModuleEnvironment* moduleEnvironment = JSModuleEnvironment::create(vm, globalObject, nullptr, exportSymbolTable, jsTDZValue(), moduleRecord);
moduleRecord->setModuleEnvironment(globalObject, moduleEnvironment);
RETURN_IF_EXCEPTION(scope, { });
for (unsigned index = 0; index < exportNames.size(); ++index) {
PropertyName exportName = exportNames[index];
JSValue exportValue = exportValues.at(index);
constexpr bool shouldThrowReadOnlyError = false;
constexpr bool ignoreReadOnlyErrors = true;
bool putResult = false;
symbolTablePutTouchWatchpointSet(moduleEnvironment, globalObject, exportName, exportValue, shouldThrowReadOnlyError, ignoreReadOnlyErrors, putResult);
RETURN_IF_EXCEPTION(scope, { });
ASSERT(putResult);
}
return moduleRecord;
}
SyntheticModuleRecord* SyntheticModuleRecord::tryCreateDefaultExportSyntheticModule(JSGlobalObject* globalObject, const Identifier& moduleKey, JSValue defaultExport)
{
VM& vm = globalObject->vm();
Vector<Identifier, 4> exportNames;
MarkedArgumentBuffer exportValues;
exportNames.append(vm.propertyNames->defaultKeyword);
exportValues.appendWithCrashOnOverflow(defaultExport);
return tryCreateWithExportNamesAndValues(globalObject, moduleKey, exportNames, exportValues);
}
SyntheticModuleRecord* SyntheticModuleRecord::parseJSONModule(JSGlobalObject* globalObject, const Identifier& moduleKey, SourceCode&& sourceCode)
{
// https://tc39.es/proposal-json-modules/#sec-parse-json-module
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue result = JSONParseWithException(globalObject, sourceCode.view());
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, SyntheticModuleRecord::tryCreateDefaultExportSyntheticModule(globalObject, moduleKey, result));
}
} // namespace JSC
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