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120 lines
3.8 KiB
120 lines
3.8 KiB
/*============================================================================
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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 cmMacroCommand_h
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#define cmMacroCommand_h
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#include "cmCommand.h"
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#include "cmFunctionBlocker.h"
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/** \class cmMacroFunctionBlocker
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* \brief subclass of function blocker
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*
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*
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*/
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class cmMacroFunctionBlocker : public cmFunctionBlocker
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{
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public:
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cmMacroFunctionBlocker() {this->Depth=0;}
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virtual ~cmMacroFunctionBlocker() {}
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virtual bool IsFunctionBlocked(const cmListFileFunction&,
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cmMakefile &mf,
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cmExecutionStatus &);
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virtual bool ShouldRemove(const cmListFileFunction&, cmMakefile &mf);
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std::vector<std::string> Args;
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std::vector<cmListFileFunction> Functions;
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int Depth;
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};
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/** \class cmMacroCommand
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* \brief starts an if block
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*
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* cmMacroCommand starts an if block
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*/
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class cmMacroCommand : 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 cmMacroCommand;
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}
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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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/**
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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 "macro";}
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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 "Start recording a macro for later invocation as a command.";
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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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" macro(<name> [arg1 [arg2 [arg3 ...]]])\n"
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" COMMAND1(ARGS ...)\n"
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" COMMAND2(ARGS ...)\n"
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" ...\n"
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" endmacro(<name>)\n"
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"Define a macro named <name> that takes arguments named "
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"arg1 arg2 arg3 (...). Commands listed after macro, "
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"but before the matching endmacro, are not invoked until the macro "
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"is invoked. When it is invoked, the commands recorded in the "
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"macro are first modified by replacing formal parameters (${arg1}) "
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"with the arguments passed, and then invoked as normal commands. In "
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"addition to referencing the formal parameters you can reference "
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"the values ${ARGC} which will be set to the number of arguments "
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"passed into the function as well as ${ARGV0} ${ARGV1} ${ARGV2} "
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"... which "
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"will have the actual values of the arguments passed in. This "
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"facilitates creating macros with optional arguments. Additionally "
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"${ARGV} holds the list of all arguments given to the macro and "
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"${ARGN} "
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"holds the list of argument past the last expected argument. "
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"Note that the parameters to a macro and values such as ARGN "
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"are not variables in the usual CMake sense. They are string "
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"replacements much like the c preprocessor would do with a "
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"macro. If you want true CMake variables you should look at "
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"the function command."
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"\n"
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"See the cmake_policy() command documentation for the behavior of "
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"policies inside macros."
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;
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}
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cmTypeMacro(cmMacroCommand, cmCommand);
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};
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#endif
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