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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmFunctionCommand_h
#define cmFunctionCommand_h
#include "cmCommand.h"
#include "cmFunctionBlocker.h"
class cmFunctionFunctionBlocker : public cmFunctionBlocker
{
public:
cmFunctionFunctionBlocker() {this->Depth=0;}
virtual ~cmFunctionFunctionBlocker() {}
virtual bool IsFunctionBlocked(const cmListFileFunction&,
cmMakefile &mf,
cmExecutionStatus &);
virtual bool ShouldRemove(const cmListFileFunction&, cmMakefile &mf);
std::vector<std::string> Args;
std::vector<cmListFileFunction> Functions;
int Depth;
};
/// Starts function() ... endfunction() block
class cmFunctionCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmFunctionCommand;
}
/**
* 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() const { return true; }
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() const { return "function";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation() const
{
return "Start recording a function for later invocation as a command.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation() const
{
return
" function(<name> [arg1 [arg2 [arg3 ...]]])\n"
" COMMAND1(ARGS ...)\n"
" COMMAND2(ARGS ...)\n"
" ...\n"
" endfunction(<name>)\n"
"Define a function named <name> that takes arguments named "
"arg1 arg2 arg3 (...). Commands listed after function, but before "
"the matching endfunction, are not invoked until the function "
"is invoked. When it is invoked, the commands recorded in the "
"function are first modified by replacing formal parameters (${arg1}) "
"with the arguments passed, and then invoked as normal commands. In "
"addition to referencing the formal parameters you can reference "
"the variable ARGC which will be set to the number of arguments "
"passed into the function as well as ARGV0 ARGV1 ARGV2 ... which "
"will have the actual values of the arguments passed in. This "
"facilitates creating functions with optional arguments. Additionally "
"ARGV holds the list of all arguments given to the function and ARGN "
"holds the list of arguments past the last expected argument."
"\n"
"A function opens a new scope: see set(var PARENT_SCOPE) for details."
"\n"
"See the cmake_policy() command documentation for the behavior of "
"policies inside functions."
;
}
cmTypeMacro(cmFunctionCommand, cmCommand);
};
#endif
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