85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
/*=========================================================================
|
|
|
|
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 cmVariableWatch_h
|
|
#define cmVariableWatch_h
|
|
|
|
#include "cmStandardIncludes.h"
|
|
|
|
class cmMakefile;
|
|
|
|
/** \class cmVariableWatch
|
|
* \brief Helper class for watching of variable accesses.
|
|
*
|
|
* Calls function when variable is accessed
|
|
*/
|
|
class cmVariableWatch
|
|
{
|
|
public:
|
|
typedef void (*WatchMethod)(const std::string& variable, int access_type,
|
|
void* client_data, const char* newValue, const cmMakefile* mf);
|
|
|
|
cmVariableWatch();
|
|
~cmVariableWatch();
|
|
|
|
/**
|
|
* Add watch to the variable
|
|
*/
|
|
void AddWatch(const std::string& variable, WatchMethod method,
|
|
void* client_data=0);
|
|
void RemoveWatch(const std::string& variable, WatchMethod method);
|
|
|
|
/**
|
|
* This method is called when variable is accessed
|
|
*/
|
|
void VariableAccessed(const std::string& variable, int access_type,
|
|
const char* newValue, const cmMakefile* mf) const;
|
|
|
|
/**
|
|
* Different access types.
|
|
*/
|
|
enum
|
|
{
|
|
VARIABLE_READ_ACCESS = 0,
|
|
UNKNOWN_VARIABLE_READ_ACCESS,
|
|
ALLOWED_UNKNOWN_VARIABLE_READ_ACCESS,
|
|
VARIABLE_MODIFIED_ACCESS,
|
|
VARIABLE_REMOVED_ACCESS,
|
|
NO_ACCESS
|
|
};
|
|
|
|
/**
|
|
* Return the access as string
|
|
*/
|
|
static const char* GetAccessAsString(int access_type);
|
|
|
|
protected:
|
|
struct Pair
|
|
{
|
|
WatchMethod Method;
|
|
void* ClientData;
|
|
Pair() : Method(0), ClientData(0) {}
|
|
};
|
|
|
|
typedef std::vector< Pair > VectorOfPairs;
|
|
typedef std::map<cmStdString, VectorOfPairs > StringToVectorOfPairs;
|
|
|
|
StringToVectorOfPairs WatchMap;
|
|
};
|
|
|
|
|
|
#endif
|