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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 cmForEachCommand_h
#define cmForEachCommand_h
#include "cmCommand.h"
#include "cmFunctionBlocker.h"
#include "cmListFileCache.h"
class cmForEachFunctionBlocker : public cmFunctionBlocker
{
public:
cmForEachFunctionBlocker() {this->Depth = 0;}
virtual ~cmForEachFunctionBlocker() {}
virtual bool IsFunctionBlocked(const cmListFileFunction& lff,
cmMakefile &mf,
cmExecutionStatus &);
virtual bool ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf);
std::vector<std::string> Args;
std::vector<cmListFileFunction> Functions;
private:
int Depth;
};
/// Starts foreach() ... endforeach() block
class cmForEachCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmForEachCommand;
}
/**
* 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 "foreach";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation() const
{
return "Evaluate a group of commands for each value in a list.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation() const
{
return
" foreach(loop_var arg1 arg2 ...)\n"
" COMMAND1(ARGS ...)\n"
" COMMAND2(ARGS ...)\n"
" ...\n"
" endforeach(loop_var)\n"
"All commands between foreach and the matching endforeach are recorded "
"without being invoked. Once the endforeach is evaluated, the "
"recorded list of commands is invoked once for each argument listed "
"in the original foreach command. Before each iteration of the loop "
"\"${loop_var}\" will be set as a variable with "
"the current value in the list.\n"
" foreach(loop_var RANGE total)\n"
" foreach(loop_var RANGE start stop [step])\n"
"Foreach can also iterate over a generated range of numbers. "
"There are three types of this iteration:\n"
"* When specifying single number, the range will have elements "
"0 to \"total\".\n"
"* When specifying two numbers, the range will have elements from "
"the first number to the second number.\n"
"* The third optional number is the increment used to iterate from "
"the first number to the second number."
"\n"
" foreach(loop_var IN [LISTS [list1 [...]]]\n"
" [ITEMS [item1 [...]]])\n"
"Iterates over a precise list of items. "
"The LISTS option names list-valued variables to be traversed, "
"including empty elements (an empty string is a zero-length list). "
"The ITEMS option ends argument parsing and includes all arguments "
"following it in the iteration."
;
}
cmTypeMacro(cmForEachCommand, cmCommand);
private:
bool HandleInMode(std::vector<std::string> const& args);
};
#endif
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