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