00001 // @HEADER 00002 // *********************************************************************** 00003 // 00004 // Teuchos: Common Tools Package 00005 // Copyright (2004) Sandia Corporation 00006 // 00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00008 // license for use of this work by or on behalf of the U.S. Government. 00009 // 00010 // This library is free software; you can redistribute it and/or modify 00011 // it under the terms of the GNU Lesser General Public License as 00012 // published by the Free Software Foundation; either version 2.1 of the 00013 // License, or (at your option) any later version. 00014 // 00015 // This library is distributed in the hope that it will be useful, but 00016 // WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00018 // Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public 00021 // License along with this library; if not, write to the Free Software 00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00023 // USA 00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 00025 // 00026 // *********************************************************************** 00027 // @HEADER 00028 00029 #ifndef TEUCHOS_CONST_NONCONST_OBJECT_CONTAINER_HPP 00030 #define TEUCHOS_CONST_NONCONST_OBJECT_CONTAINER_HPP 00031 00032 #include "Teuchos_RCP.hpp" 00033 00034 namespace Teuchos { 00035 00047 template<class ObjType> 00048 class ConstNonconstObjectContainer { 00049 public: 00051 ConstNonconstObjectContainer() 00052 :constObj_(null),isConst_(true) {} 00054 ConstNonconstObjectContainer( const RCP<ObjType> &obj ) 00055 { initialize(obj); } 00057 ConstNonconstObjectContainer( const RCP<const ObjType> &obj ) 00058 { initialize(obj); } 00061 void initialize( const RCP<ObjType> &obj ) 00062 { TEST_FOR_EXCEPT(!obj.get()); constObj_=obj; isConst_=false; } 00065 void initialize( const RCP<const ObjType> &obj ) 00066 { TEST_FOR_EXCEPT(!obj.get()); constObj_=obj; isConst_=true; } 00068 void uninitialize() 00069 { constObj_=null; isConst_=true; } 00071 bool isConst() const 00072 { return isConst_; } 00086 RCP<ObjType> getNonconstObj() 00087 { 00088 TEST_FOR_EXCEPTION( 00089 constObj_.get() && isConst_, std::logic_error 00090 ,"Error, the object of reference type \""<<TypeNameTraits<ObjType>::name()<<"\" was given " 00091 "as a const-only object and non-const access is not allowed." 00092 ); 00093 return rcp_const_cast<ObjType>(constObj_); 00094 } 00100 RCP<const ObjType> getConstObj() const 00101 { return constObj_; } 00103 RCP<const ObjType> operator()() const 00104 { return getConstObj(); } 00105 00106 private: 00107 RCP<const ObjType> constObj_; 00108 bool isConst_; 00109 }; 00110 00111 } // namespace Teuchos 00112 00113 00114 #endif // TEUCHOS_CONST_NONCONST_OBJECT_CONTAINER_HPP