NullGlobalScope.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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    copy of this software and associated documentation files (the "Software"),
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/**
 * @file NullGlobalScope.hh
 *
 * Declaration of NullGlobalScope class.
 *
 * @author Ari Metsähalme 2005 (ari.metsahalme-no.spam-tut.fi)
 * @note rating: red
 */
 
#ifndef TTA_NULL_GLOBALSCOPE_HH
#define TTA_NULL_GLOBALSCOPE_HH
 
#include "GlobalScope.hh"
 
namespace TTAProgram {
 
/**
 * A singleton class that represents a null global scope.
 */
class NullGlobalScope : public GlobalScope {
public:
    virtual ~NullGlobalScope();
    static NullGlobalScope& instance();
 
protected:
    NullGlobalScope();
 
private:
    /// Copying not allowed.
    NullGlobalScope(const NullGlobalScope&);
    /// Assignment not allowed.
    NullGlobalScope& operator=(const NullGlobalScope&);
 
    /// Unique instance of NullGlobalScope.
    static NullGlobalScope instance_;
};
 
}
 
#endif