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      1 /*
      2  *  Copyright (C) 1999-2001 Harri Porten (porten (at) kde.org)
      3  *  Copyright (C) 2001 Peter Kelly (pmk (at) post.com)
      4  *  Copyright (C) 2003, 2007 Apple Inc. All rights reserved.
      5  *
      6  *  This library is free software; you can redistribute it and/or
      7  *  modify it under the terms of the GNU Library General Public
      8  *  License as published by the Free Software Foundation; either
      9  *  version 2 of the License, or (at your option) any later version.
     10  *
     11  *  This library is distributed in the hope that it will be useful,
     12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  *  Library General Public License for more details.
     15  *
     16  *  You should have received a copy of the GNU Library General Public License
     17  *  along with this library; see the file COPYING.LIB.  If not, write to
     18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  *  Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef Completion_h
     24 #define Completion_h
     25 
     26 #include "JSValue.h"
     27 
     28 namespace JSC {
     29 
     30     class ExecState;
     31     class ScopeChain;
     32     class SourceCode;
     33 
     34     enum ComplType { Normal, Break, Continue, ReturnValue, Throw, Interrupted };
     35 
     36     /*
     37      * Completion objects are used to convey the return status and value
     38      * from functions.
     39      */
     40     class Completion {
     41     public:
     42         Completion(ComplType type = Normal, JSValue value = JSValue())
     43             : m_type(type)
     44             , m_value(value)
     45         {
     46         }
     47 
     48         ComplType complType() const { return m_type; }
     49         JSValue value() const { return m_value; }
     50         void setValue(JSValue v) { m_value = v; }
     51         bool isValueCompletion() const { return m_value; }
     52 
     53     private:
     54         ComplType m_type;
     55         JSValue m_value;
     56     };
     57 
     58     Completion checkSyntax(ExecState*, const SourceCode&);
     59     Completion evaluate(ExecState*, ScopeChain&, const SourceCode&, JSValue thisValue = JSValue());
     60 
     61 } // namespace JSC
     62 
     63 #endif // Completion_h
     64