/**********************************************************************

AddPolarH.cpp - The option --AddPolarHAdds  adds hydrogen to polar atoms only.

Copyright(C) 2007 by Chris Morley

This file is part of the Open Babel project.

For more information, see <http://openbabel.org/>

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation version 2 of the License.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

***********************************************************************/

#include <openbabel/babelconfig.h>

#include <iostream>

#include<openbabel/op.h>

#include<openbabel/mol.h>

namespace OpenBabel

{

class OpAddPolarH : public OBOp

{

public:

  OpAddPolarH(const char* ID) : OBOp(ID, false){};

  const char* Description() override { return "Adds hydrogen to polar atoms only"; }

  bool WorksWith(OBBase* pOb) const override { return dynamic_cast<OBMol*>(pOb) != nullptr; }

  bool Do(OBBase* pOb, const char* OptionText=nullptr, OpMap* pOptions=nullptr,

      OBConversion* pConv=nullptr) override;

};

/////////////////////////////////////////////////////////////////

OpAddPolarH theOpAddPolarH("AddPolarH"); //Global instance

/////////////////////////////////////////////////////////////////

bool OpAddPolarH::Do(OBBase* pOb, const char* OptionText, OpMap* pOptions, OBConversion* pConv)

{

  OBMol* pmol = dynamic_cast<OBMol*>(pOb);

  if(!pmol)

    return false;

  pmol->AddPolarHydrogens();

  return true;

}

}//namespace