99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
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/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#ifndef cmVariableWatchCommand_h
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#define cmVariableWatchCommand_h
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#include "cmCommand.h"
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class cmVariableWatchCommandHandler
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{
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public:
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typedef std::vector<std::string> VectorOfCommands;
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VectorOfCommands Commands;
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};
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/** \class cmVariableWatchCommand
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* \brief Watch when the variable changes and invoke command
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*
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*/
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class cmVariableWatchCommand : public cmCommand
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{
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public:
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/**
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* This is a virtual constructor for the command.
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*/
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virtual cmCommand* Clone()
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{
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return new cmVariableWatchCommand;
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}
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//! Default constructor
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cmVariableWatchCommand();
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/**
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* This is called when the command is first encountered in
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* the CMakeLists.txt file.
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*/
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virtual bool InitialPass(std::vector<std::string> const& args);
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/**
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* This determines if the command is invoked when in script mode.
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*/
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virtual bool IsScriptable() { return true; }
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/**
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* The name of the command as specified in CMakeList.txt.
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*/
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virtual const char* GetName() { return "VARIABLE_WATCH";}
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/**
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* Succinct documentation.
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*/
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virtual const char* GetTerseDocumentation()
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{
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return "Watch the CMake variable for change.";
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}
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/**
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* More documentation.
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*/
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virtual const char* GetFullDocumentation()
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{
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return
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" VARIABLE_WATCH(<variable name> [<command to execute>])\n"
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"If the specified variable changes, the message will be printed about "
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"the variable being changed. If the command is spceified, the command "
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"will be executed. The command will receive the following arguments:"
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" COMMAND(<variable> <access> <value> <current list file> <stack>)";
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}
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cmTypeMacro(cmVariableWatchCommand, cmCommand);
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void VariableAccessed(const std::string& variable, int access_type,
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const char* newValue, const cmMakefile* mf);
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protected:
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std::map<std::string, cmVariableWatchCommandHandler> Handlers;
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bool InCallback;
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};
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#endif
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