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00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2005 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software; you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by the 00013 Free Software Foundation; either version 2 of the License, or (at your 00014 option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM; if not, write to the Free Software Foundation, 00023 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00024 00025 Class 00026 empty 00027 00028 Description 00029 00030 SourceFiles 00031 emptyI.H 00032 empty.C 00033 emptyIO.C 00034 00035 \*---------------------------------------------------------------------------*/ 00036 00037 #ifndef empty_H 00038 #define empty_H 00039 00040 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00041 00042 namespace Foam 00043 { 00044 00045 // Class forward declarations 00046 class Istream; 00047 class Ostream; 00048 00049 /*---------------------------------------------------------------------------*\ 00050 Class empty Declaration 00051 \*---------------------------------------------------------------------------*/ 00052 00053 class empty 00054 { 00055 00056 public: 00057 00058 // Constructors 00059 00060 //- Construct null 00061 empty() 00062 {} 00063 00064 //- Construct from Istream 00065 empty(Istream&) 00066 {} 00067 00068 00069 // IOstream Operator 00070 00071 friend Istream& operator>>(Istream& is, empty&) 00072 { 00073 return is; 00074 } 00075 00076 friend Ostream& operator<<(Ostream& os, const empty&) 00077 { 00078 return os; 00079 } 00080 }; 00081 00082 00083 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00084 00085 } // End namespace Foam 00086 00087 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00088 00089 #endif 00090 00091 // ************************************************************************* //