Source/JavaScriptCore/runtime/DirectEvalExecutable.cpp

/*
 * Copyright (C) 2016 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#include "config.h"
#include "DirectEvalExecutable.h"

#include "CodeCache.h"
#include "Debugger.h"
#include "Error.h"
#include "HeapInlines.h"
#include "JSCJSValueInlines.h"
#include "ParserError.h"

namespace JSC {

DirectEvalExecutable* DirectEvalExecutable::create(ExecState* exec, const SourceCode& source, bool isInStrictContext, DerivedContextType derivedContextType, bool isArrowFunctionContext, EvalContextType evalContextType, const VariableEnvironment* variablesUnderTDZ)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
    if (!globalObject->evalEnabled()) {
        throwException(exec, scope, createEvalError(exec, globalObject->evalDisabledErrorMessage()));
        return 0;
    }

    auto* executable = new (NotNull, allocateCell<DirectEvalExecutable>(vm.heap)) DirectEvalExecutable(exec, source, isInStrictContext, derivedContextType, isArrowFunctionContext, evalContextType);
    executable->finishCreation(vm);

    ParserError error;
    JSParserStrictMode strictMode = executable->isStrictMode() ? JSParserStrictMode::Strict : JSParserStrictMode::NotStrict;
    OptionSet<CodeGenerationMode> codeGenerationMode = globalObject->defaultCodeGenerationMode();

    // We don't bother with CodeCache here because direct eval uses a specialized DirectEvalCodeCache.
    UnlinkedEvalCodeBlock* unlinkedEvalCode = generateUnlinkedCodeBlock<UnlinkedEvalCodeBlock>(
        vm, executable, executable->source(), strictMode, JSParserScriptMode::Classic, codeGenerationMode, error, evalContextType, variablesUnderTDZ);

    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_unlinkedEvalCodeBlock.set(vm, executable, unlinkedEvalCode);

    return executable;
}

DirectEvalExecutable::DirectEvalExecutable(ExecState* exec, const SourceCode& source, bool inStrictContext, DerivedContextType derivedContextType, bool isArrowFunctionContext, EvalContextType evalContextType)
    : EvalExecutable(exec, source, inStrictContext, derivedContextType, isArrowFunctionContext, evalContextType)
{
}

} // namespace JSC