/*========================================================================= 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. =========================================================================*/ #ifndef cmVariableWatchCommand_h #define cmVariableWatchCommand_h #include "cmCommand.h" class cmVariableWatchCommandHandler { public: typedef std::vector<std::string> VectorOfCommands; VectorOfCommands Commands; }; /** \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; } //! Default constructor cmVariableWatchCommand(); /** * 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); /** * This determines if the command is invoked when in script mode. */ virtual bool IsScriptable() { return true; } /** * The name of the command as specified in CMakeList.txt. */ virtual const char* GetName() { return "variable_watch";} /** * Succinct documentation. */ virtual const char* GetTerseDocumentation() { return "Watch the CMake variable for change."; } /** * More documentation. */ virtual const char* GetFullDocumentation() { return " variable_watch(<variable name> [<command to execute>])\n" "If the specified variable changes, the message will be printed about " "the variable being changed. If the command is specified, the command " "will be executed. The command will receive the following arguments:" " COMMAND(<variable> <access> <value> <current list file> <stack>)"; } cmTypeMacro(cmVariableWatchCommand, cmCommand); void VariableAccessed(const std::string& variable, int access_type, const char* newValue, const cmMakefile* mf); protected: std::map<std::string, cmVariableWatchCommandHandler> Handlers; bool InCallback; }; #endif