/*=========================================================================

  Program:   CMake - Cross-Platform Makefile Generator
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#include "cmVariableWatch.h"

cmVariableWatch::cmVariableWatch()
{
}

cmVariableWatch::~cmVariableWatch()
{
}

void cmVariableWatch::AddWatch(const std::string& variable, 
                               WatchMethod method, void* client_data /*=0*/)
{
  cmVariableWatch::Pair p;
  p.Method = method;
  p.ClientData = client_data;
  cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
  cmVariableWatch::VectorOfPairs::size_type cc;
  for ( cc = 0; cc < vp->size(); cc ++ )
    {
    cmVariableWatch::Pair* pair = &(*vp)[cc];
    if ( pair->Method == method )
      {
      (*vp)[cc] = p;
      return;
      }
    }
  vp->push_back(p);
}

void cmVariableWatch::RemoveWatch(const std::string& variable, 
                                  WatchMethod method)
{
  cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
  cmVariableWatch::VectorOfPairs::iterator it;
  for ( it = vp->begin(); it != vp->end(); ++it )
    {
    if ( it->Method == method )
      {
      vp->erase(it);
      return;
      }
    }
}

void  cmVariableWatch::VariableAccessed(const std::string& variable, 
                                        int access_type) const
{
  cmVariableWatch::StringToVectorOfPairs::const_iterator mit = 
    this->WatchMap.find(variable);
  if ( mit  != this->WatchMap.end() )
    {
    const cmVariableWatch::VectorOfPairs* vp = &mit->second;
    cmVariableWatch::VectorOfPairs::const_iterator it;
    for ( it = vp->begin(); it != vp->end(); it ++ )
      {
      it->Method(variable, access_type, it->ClientData);
      }
    }
}