Source/JavaScriptCore/runtime/ModuleProgramExecutable.cpp

/*
 * Copyright (C) 2009, 2010, 2013, 2015-2016 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
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 * are met:
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#include "config.h"

#include "BatchedTransitionOptimizer.h"
#include "CodeBlock.h"
#include "CodeCache.h"
#include "Debugger.h"
#include "JIT.h"
#include "JSCInlines.h"
#include "LLIntEntrypoint.h"
#include "ModuleProgramCodeBlock.h"
#include "Parser.h"
#include "TypeProfiler.h"
#include "VMInlines.h"
#include <wtf/CommaPrinter.h>

namespace JSC {

const ClassInfo ModuleProgramExecutable::s_info = { "ModuleProgramExecutable", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(ModuleProgramExecutable) };

ModuleProgramExecutable::ModuleProgramExecutable(ExecState* exec, const SourceCode& source)
    : Base(exec->vm().moduleProgramExecutableStructure.get(), exec->vm(), source, false, DerivedContextType::None, false, EvalContextType::None, NoIntrinsic)
{
    ASSERT(source.provider()->sourceType() == SourceProviderSourceType::Module);
    VM& vm = exec->vm();
    if (vm.typeProfiler() || vm.controlFlowProfiler())
        vm.functionHasExecutedCache()->insertUnexecutedRange(sourceID(), typeProfilingStartOffset(vm), typeProfilingEndOffset(vm));
}

ModuleProgramExecutable* ModuleProgramExecutable::create(ExecState* exec, const SourceCode& source)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
    ModuleProgramExecutable* executable = new (NotNull, allocateCell<ModuleProgramExecutable>(vm.heap)) ModuleProgramExecutable(exec, source);
    executable->finishCreation(exec->vm());

    ParserError error;
    OptionSet<CodeGenerationMode> codeGenerationMode = globalObject->defaultCodeGenerationMode();
    UnlinkedModuleProgramCodeBlock* unlinkedModuleProgramCode = vm.codeCache()->getUnlinkedModuleProgramCodeBlock(
        vm, executable, executable->source(), codeGenerationMode, error);

    if (globalObject->hasDebugger())
        globalObject->debugger()->sourceParsed(exec, executable->source().provider(), error.line(), error.message());

    if (error.isValid()) {
        throwVMError(exec, scope, error.toErrorObject(globalObject, executable->source()));
        return nullptr;
    }

    executable->m_unlinkedModuleProgramCodeBlock.set(exec->vm(), executable, unlinkedModuleProgramCode);

    executable->m_moduleEnvironmentSymbolTable.set(exec->vm(), executable, jsCast<SymbolTable*>(unlinkedModuleProgramCode->constantRegister(unlinkedModuleProgramCode->moduleEnvironmentSymbolTableConstantRegisterOffset()).get())->cloneScopePart(exec->vm()));

    return executable;
}

void ModuleProgramExecutable::destroy(JSCell* cell)
{
    static_cast<ModuleProgramExecutable*>(cell)->ModuleProgramExecutable::~ModuleProgramExecutable();
}

auto ModuleProgramExecutable::ensureTemplateObjectMap(VM&) -> TemplateObjectMap&
{
    return ensureTemplateObjectMapImpl(m_templateObjectMap);
}

void ModuleProgramExecutable::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    ModuleProgramExecutable* thisObject = jsCast<ModuleProgramExecutable*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);
    visitor.append(thisObject->m_unlinkedModuleProgramCodeBlock);
    visitor.append(thisObject->m_moduleEnvironmentSymbolTable);
    visitor.append(thisObject->m_moduleProgramCodeBlock);
    if (TemplateObjectMap* map = thisObject->m_templateObjectMap.get()) {
        auto locker = holdLock(thisObject->cellLock());
        for (auto& entry : *map)
            visitor.append(entry.value);
    }
}

} // namespace JSC