CMake/Source/cmFunctionCommand.h
Brad King bca1026250 ENH: Better error message for unclosed blocks
This centralizes construction of the error message for an unclosed
logical block (if, foreach, etc.).  We record the line at which each
block is opened so it can be reported in the error message.
2009-01-21 09:48:20 -05:00

115 lines
3.5 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 cmFunctionCommand_h
#define cmFunctionCommand_h
#include "cmCommand.h"
#include "cmFunctionBlocker.h"
/** \class cmFunctionFunctionBlocker
* \brief subclass of function blocker
*
*
*/
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;
};
/** \class cmFunctionCommand
* \brief starts an if block
*
* cmFunctionCommand starts an if 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() { return true; }
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() { return "function";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation()
{
return "Start recording a function for later invocation as a command.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation()
{
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 argument pass the last expected argument.";
}
cmTypeMacro(cmFunctionCommand, cmCommand);
};
#endif