Event/DecayChain/include/DecayChain/Function/DCUnaryAdapter.h

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#ifndef DCHAIN_DCUNARYADAPTER_H
#define DCHAIN_DCUNARYADAPTER_H
// -*- C++ -*-
//
// Package:     <DChain>
// Module:      DCUnaryAdapter
//
/**\class DCUnaryAdapter DCUnaryAdapter.h DChain/DCUnaryAdapter.h
 
 Description: <one line class summary>
 
 Usage:
    <usage>
 
*/
//
// Author:      Chris D Jones
// Created:     Thu Jan  5 13:30:20 EST 2006
// $Id: DCUnaryAdapter.h,v 1.1.1.1 2009/03/03 06:06:56 maqm Exp $
//
// Revision history
//
// $Log: DCUnaryAdapter.h,v $
// Revision 1.1.1.1  2009/03/03 06:06:56  maqm
// first import of DecayChain
//
// Revision 1.1  2006/01/11 20:28:13  cdj
// massive class renaming, addition of [] for selection and unit tests
//
 
// system include files
#include <functional>
 
// user include files
 
// forward declarations
namespace dchain {
  template <class TFunc>
  class DCUnaryAdapter : public std::unary_function<typename TFunc::argument_type,
                                                    typename TFunc::result_type> {
    // ---------- friend classes and functions ---------------
 
  public:
    // ---------- constants, enums and typedefs --------------
    typedef typename TFunc::argument_type argument_type;
    typedef typename TFunc::result_type   result_type;
 
    // ---------- Constructors and destructor ----------------
    DCUnaryAdapter() : m_func( 0 ) {}
    DCUnaryAdapter( TFunc& iFunc ) : m_func( &iFunc ) {}
    DCUnaryAdapter( TFunc* iFunc ) : m_func( iFunc ) {}
 
    // virtual ~DCUnaryAdapter();
 
    // ---------- member functions ---------------------------
 
    // ---------- const member functions ---------------------
    result_type operator()( argument_type iArg ) const { return ( *m_func )( iArg ); }
 
    operator bool() { return 0 != m_func; }
 
  private:
    // ---------- Constructors and destructor ----------------
    // DCUnaryAdapter( const DCUnaryAdapter& ); // stop default
 
    // ---------- assignment operator(s) ---------------------
    // const DCUnaryAdapter& operator=( const DCUnaryAdapter& ); // stop default
 
    // ---------- private member functions -------------------
 
    // ---------- private const member functions -------------
 
    // ---------- data members -------------------------------
    TFunc* m_func;
 
    // ---------- static data members ------------------------
  };
} // namespace dchain
// inline function definitions
 
#endif /* DCHAIN_DCUNARYADAPTER_H */