Line data    Source code

       1             : /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       2             :    Copyright (c) 2011-2019 The plumed team
       3             :    (see the PEOPLE file at the root of the distribution for a list of names)
       4             : 
       5             :    See http://www.plumed.org for more information.
       6             : 
       7             :    This file is part of plumed, version 2.
       8             : 
       9             :    plumed is free software: you can redistribute it and/or modify
      10             :    it under the terms of the GNU Lesser General Public License as published by
      11             :    the Free Software Foundation, either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    plumed is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU Lesser General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU Lesser General Public License
      20             :    along with plumed.  If not, see <http://www.gnu.org/licenses/>.
      21             : +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
      22             : #ifndef __PLUMED_core_WithCmd_h
      23             : #define __PLUMED_core_WithCmd_h
      24             : 
      25             : #include <string>
      26             : 
      27             : namespace PLMD {
      28             : 
      29             : /// Base for classes with cmd() method.
      30             : /// This is an abstract base class for classes with
      31             : /// cmd() method. It takes care of "const" cast, and
      32             : /// in the future it may be used to enforce some sort
      33             : /// of type checking on passed arguments.
      34             : class WithCmd {
      35             : public:
      36             :   virtual ~WithCmd();
      37             : /// Const val version, which indeed just overrides the const and call the virtual method.
      38             :   void cmd(const std::string& key,const void*val);
      39             : /// This has to be implemented in daughter classes.
      40             :   virtual void cmd(const std::string& key,void*val=NULL)=0;
      41             : };
      42             : 
      43             : inline
      44             : void WithCmd::cmd(const std::string& key,const void*val) {
      45             : // this is nasty trick:
      46      256345 :   cmd(key,const_cast<void*>(val));
      47             : // in this manner, a const pointer can be used for val, allowing the user to pass
      48             : // arguments such as cmd("pippo","pluto")
      49             : // but here we override the const
      50             : }
      51             : 
      52             : inline
      53             : WithCmd::~WithCmd() {
      54             : // do nothing
      55             : // here just to allow inheriting from this class properly
      56             : }
      57             : 
      58             : }
      59             : 
      60             : #endif