CMake/Source/cmVariableWatchCommand.h

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
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#ifndef cmVariableWatchCommand_h
#define cmVariableWatchCommand_h
#include "cmCommand.h"
/** \class cmVariableWatchCommand
* \brief Watch when the variable changes and invoke command
*
*/
class cmVariableWatchCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone() { return new cmVariableWatchCommand; }
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//! Default constructor
cmVariableWatchCommand();
//! Destructor.
~cmVariableWatchCommand();
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/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args,
cmExecutionStatus& status);
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/**
* This determines if the command is invoked when in script mode.
*/
virtual bool IsScriptable() const { return true; }
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/** This command does not really have a final pass but it needs to
stay alive since it owns variable watch callback information. */
virtual bool HasFinalPass() const { return true; }
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/**
* The name of the command as specified in CMakeList.txt.
*/
virtual std::string GetName() const { return "variable_watch"; }
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cmTypeMacro(cmVariableWatchCommand, cmCommand);
protected:
std::set<std::string> WatchedVariables;
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};
#endif