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/*=========================================================================
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 cmIfCommand_h
#define cmIfCommand_h
#include "cmStandardIncludes.h"
#include "cmCommand.h"
#include "cmFunctionBlocker.h"
/** \class cmIfFunctionBlocker
* \brief subclass of function blocker
*
*
*/
class cmIfFunctionBlocker : public cmFunctionBlocker
{
public:
cmIfFunctionBlocker() {}
virtual ~cmIfFunctionBlocker() {}
virtual bool IsFunctionBlocked(const cmListFileFunction& lff,
cmMakefile &mf);
virtual bool ShouldRemove(const cmListFileFunction& lff,
cmMakefile &mf);
virtual void ScopeEnded(cmMakefile &mf);
std::vector<cmListFileArgument> m_Args;
bool m_IsBlocking;
};
/** \class cmIfCommand
* \brief starts an if block
*
* cmIfCommand starts an if block
*/
class cmIfCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmIfCommand;
}
/**
* This overrides the default InvokeInitialPass implementation.
* It records the arguments before expansion.
*/
virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args);
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args) { return false; }
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() { return "IF";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation()
{
return "start an if block";
}
/**
* This determines if the command gets propagated down
* to makefiles located in subdirectories.
*/
virtual bool IsInherited() {return true;}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation()
{
return
"IF (define) Starts an if block. Optionally it can be invoked "
"using (NOT define) (def AND def2) (def OR def2) (def MATCHES def2) "
"(COMMAND cmd) (EXISTS file) MATCHES checks if def matches the "
"regular expression def2. COMMAND checks if the cmake command cmd "
"is in this cmake executable. EXISTS file checks if file exists."
"Additionally you can do comparisons using LESS GREATER STRLESS "
"and STRGREATER. LESS and GREATER do numeric comparison while "
"STRLESS and STRGREATER do string comparisons.";
}
// this is a shared function for both If and Else to determine if
// the arguments were valid, and if so, was the response true
static bool IsTrue(const std::vector<std::string> &args,
bool &isValid, const cmMakefile *mf);
// Get a definition from the makefile. If it doesn't exist,
// return the original string.
static const char* GetVariableOrString(const char* str,
const cmMakefile* mf);
cmTypeMacro(cmIfCommand, cmCommand);
};
#endif
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