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96afb12087
This converts the CMake license to a pure 3-clause OSI-approved BSD License. We drop the previous license clause requiring modified versions to be plainly marked. We also update the CMake copyright to cover the full development time range.
99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License 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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cmExecutionStatus &status);
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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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/** This command does not really have a final pass but it needs to
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stay alive since it owns variable watch callback information. */
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virtual bool HasFinalPass() const { 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 specified, 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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