JavaScriptCore-576.tar.gz

[apple/javascriptcore.git] / runtime / Completion.h

/*
 *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
 *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
 *  Copyright (C) 2003, 2007 Apple Inc. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 *
 */

#ifndef Completion_h
#define Completion_h

#include "JSValue.h"

namespace JSC {

    class ExecState;
    class ScopeChain;
    class SourceCode;

    enum ComplType { Normal, Break, Continue, ReturnValue, Throw, Interrupted };

    /*
     * Completion objects are used to convey the return status and value
     * from functions.
     */
    class Completion {
    public:
        Completion(ComplType type = Normal, JSValue value = JSValue())
            : m_type(type)
            , m_value(value)
        {
        }

        ComplType complType() const { return m_type; }
        JSValue value() const { return m_value; }
        void setValue(JSValue v) { m_value = v; }
        bool isValueCompletion() const { return m_value; }

    private:
        ComplType m_type;
        JSValue m_value;
    };

    Completion checkSyntax(ExecState*, const SourceCode&);
    Completion evaluate(ExecState*, ScopeChain&, const SourceCode&, JSValue thisValue = JSValue());

} // namespace JSC

#endif // Completion_h