#include "llvm/Support/CommandLine.h"
#include "DebugOptions.h"
#include "llvm-c/Support.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLFunctionalExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Config/config.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/StringSaver.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdlib>
#include <optional>
#include <string>

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

namespace	llvm::cl
	This namespace contains all of the command line option processing machinery.

Macros
#define	DEBUG_TYPE "commandline"

#define	PRINT_OPT_DIFF(T)

#define	LLVM_IS_DEBUG_BUILD 0

Functions
static size_t	argPlusPrefixesSize (StringRef ArgName, size_t Pad=DefaultPad)

static SmallString< 8 >	argPrefix (StringRef ArgName, size_t Pad=DefaultPad)

static bool	isGrouping (const Option *O)

static bool	isPrefixedOrGrouping (const Option *O)

static Option *	LookupNearestOption (StringRef Arg, const StringMap< Option * > &OptionsMap, std::string &NearestString)
	LookupNearestOption - Lookup the closest match to the option specified by the specified option on the command line.

static bool	CommaSeparateAndAddOccurrence (Option *Handler, unsigned pos, StringRef ArgName, StringRef Value, bool MultiArg=false)
	CommaSeparateAndAddOccurrence - A wrapper around Handler->addOccurrence() that does special handling of cl::CommaSeparated options.

static bool	ProvideOption (Option Handler, StringRef ArgName, StringRef Value, int argc, const char const *argv, int &i)
	ProvideOption - For Value, this differentiates between an empty value ("") and a null value (StringRef()).

static Option *	getOptionPred (StringRef Name, size_t &Length, bool(Pred)(const Option ), const StringMap< Option * > &OptionsMap)

static Option *	HandlePrefixedOrGroupedOption (StringRef &Arg, StringRef &Value, bool &ErrorParsing, const StringMap< Option * > &OptionsMap)
	HandlePrefixedOrGroupedOption - The specified argument string (which started with at least one '-') does not fully match an available option.

static bool	RequiresValue (const Option *O)

static bool	EatsUnboundedNumberOfValues (const Option *O)

static bool	isWhitespace (char C)

static bool	isWhitespaceOrNull (char C)

static bool	isQuote (char C)

static size_t	parseBackslash (StringRef Src, size_t I, SmallString< 128 > &Token)
	Backslashes are interpreted in a rather complicated way in the Windows-style command line, because backslashes are used both to separate path and to escape double quote.

static bool	isWindowsSpecialChar (char C)

static bool	isWindowsSpecialCharInCommandName (char C)

static void	tokenizeWindowsCommandLineImpl (StringRef Src, StringSaver &Saver, function_ref< void(StringRef)> AddToken, bool AlwaysCopy, function_ref< void()> MarkEOL, bool InitialCommandName)

static bool	hasUTF8ByteOrderMark (ArrayRef< char > S)

static void	ExpandBasePaths (StringRef BasePath, StringSaver &Saver, const char *&Arg)

static void	initCommonOptions ()

static StringRef	getValueStr (const Option &O, StringRef DefaultMsg)

static bool	parseDouble (Option &O, StringRef Arg, double &Value)

static size_t	getOptionPrefixesSize ()

static bool	shouldPrintOption (StringRef Name, StringRef Description, const Option &O)

static int	OptNameCompare (const std::pair< const char , Option > LHS, const std::pair< const char , Option * > *RHS)

static int	SubNameCompare (const std::pair< const char , SubCommand > LHS, const std::pair< const char , SubCommand * > *RHS)

static void	sortOpts (StringMap< Option * > &OptMap, SmallVectorImpl< std::pair< const char , Option > > &Opts, bool ShowHidden)

static void	sortSubCommands (const SmallPtrSetImpl< SubCommand * > &SubMap, SmallVectorImpl< std::pair< const char , SubCommand > > &Subs)

void	LLVMParseCommandLineOptions (int argc, const char const argv, const char *Overview)
	This function parses the given arguments using the LLVM command line parser.

Variables
static const size_t	DefaultPad = 2

static StringRef	ArgPrefix = "-"

static StringRef	ArgPrefixLong = "--"

static StringRef	ArgHelpPrefix = " - "

static ManagedStatic< CommandLineParser >	GlobalParser

static StringRef	EqValue = "=<value>"

static StringRef	EmptyOption = "<empty>"

static StringRef	OptionPrefix = " ="

static const size_t	MaxOptWidth = 8

static ManagedStatic< CommandLineCommonOptions >	CommonOptions

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "commandline"

Definition at line 50 of file CommandLine.cpp.

◆ LLVM_IS_DEBUG_BUILD

#define LLVM_IS_DEBUG_BUILD 0

Definition at line 2528 of file CommandLine.cpp.

◆ PRINT_OPT_DIFF

#define PRINT_OPT_DIFF ( T )

Value:

  void parser<T>::printOptionDiff(const Option &O, T V, OptionValue<T> D,      \
                                  size_t GlobalWidth) const {                  \
    printOptionName(O, GlobalWidth);                                           \
    std::string Str;                                                           \
    {                                                                          \
      raw_string_ostream SS(Str);                                              \
      SS << V;                                                                 \
    }                                                                          \
    outs() << "= " << Str;                                                     \
    size_t NumSpaces =                                                         \
        MaxOptWidth > Str.size() ? MaxOptWidth - Str.size() : 0;               \
    outs().indent(NumSpaces) << " (default: ";                                 \
    if (D.hasValue())                                                          \
      outs() << D.getValue();                                                  \
    else                                                                       \
      outs() << "*no default*";                                                \
    outs() << ")\n";                                                           \
  }

Definition at line 2206 of file CommandLine.cpp.

Function Documentation

◆ argPlusPrefixesSize()

static size_t argPlusPrefixesSize	(	StringRef	ArgName,
		size_t	Pad = `DefaultPad`
	)

static

Definition at line 105 of file CommandLine.cpp.

References ArgHelpPrefix, ArgPrefix, ArgPrefixLong, and llvm::StringRef::size().

Referenced by llvm::cl::generic_parser_base::getOptionWidth(), llvm::cl::basic_parser_impl::getOptionWidth(), and llvm::cl::generic_parser_base::printOptionInfo().

◆ argPrefix()

static SmallString< 8 > argPrefix	(	StringRef	ArgName,
		size_t	Pad = `DefaultPad`
	)

static

Definition at line 112 of file CommandLine.cpp.

References ArgPrefix, ArgPrefixLong, I, llvm::cl::Prefix, and llvm::StringRef::size().

◆ CommaSeparateAndAddOccurrence()

static bool CommaSeparateAndAddOccurrence	(	Option *	Handler,
		unsigned	pos,
		StringRef	ArgName,
		StringRef	Value,
		bool	MultiArg = `false`
	)

static

CommaSeparateAndAddOccurrence - A wrapper around Handler->addOccurrence() that does special handling of cl::CommaSeparated options.

Definition at line 603 of file CommandLine.cpp.

References llvm::cl::Option::addOccurrence(), llvm::cl::CommaSeparated, llvm::StringRef::find(), llvm::cl::Option::getMiscFlags(), llvm::StringRef::npos, and llvm::StringRef::substr().

Referenced by ProvideOption().

◆ EatsUnboundedNumberOfValues()

static bool EatsUnboundedNumberOfValues ( const Option * O )

static

Definition at line 790 of file CommandLine.cpp.

References llvm::cl::OneOrMore, and llvm::cl::ZeroOrMore.

◆ ExpandBasePaths()

static void ExpandBasePaths	(	StringRef	BasePath,
		StringSaver &	Saver,
		const char *&	Arg
	)

static

Definition at line 1103 of file CommandLine.cpp.

References llvm::sys::path::append(), llvm::SmallString< InternalLen >::append(), assert(), llvm::StringRef::data(), llvm::SmallVectorBase< Size_T >::empty(), llvm::StringRef::empty(), llvm::StringRef::find(), llvm::sys::path::is_absolute(), LHS, llvm::StringRef::npos, llvm::StringSaver::save(), llvm::StringRef::size(), llvm::SmallString< InternalLen >::str(), and llvm::StringRef::substr().

◆ getOptionPred()

static Option * getOptionPred	(	StringRef	Name,
		size_t &	Length,
		bool()(const Option )	Pred,
		const StringMap< Option * > &	OptionsMap
	)

static

Definition at line 702 of file CommandLine.cpp.

References llvm::StringMap< ValueTy, AllocatorTy >::end(), llvm::StringMap< ValueTy, AllocatorTy >::find(), llvm::Length, and Name.

Referenced by HandlePrefixedOrGroupedOption().

◆ getOptionPrefixesSize()

static size_t getOptionPrefixesSize ( )

static

Definition at line 2090 of file CommandLine.cpp.

References ArgHelpPrefix, OptionPrefix, and llvm::StringRef::size().

Referenced by llvm::cl::generic_parser_base::getOptionWidth(), and llvm::cl::generic_parser_base::printOptionInfo().

◆ getValueStr()

static StringRef getValueStr	(	const Option &	O,
		StringRef	DefaultMsg
	)

static

Definition at line 1860 of file CommandLine.cpp.

Referenced by llvm::cl::basic_parser_impl::getOptionWidth(), and llvm::cl::basic_parser_impl::printOptionInfo().

◆ HandlePrefixedOrGroupedOption()

static Option * HandlePrefixedOrGroupedOption	(	StringRef &	Arg,
		StringRef &	Value,
		bool &	ErrorParsing,
		const StringMap< Option * > &	OptionsMap
	)

static

HandlePrefixedOrGroupedOption - The specified argument string (which started with at least one '-') does not fully match an available option.

Check to see if this is a prefix or grouped option. If so, split arg into output an Arg/Value pair and return the Option to parse it with.

Definition at line 731 of file CommandLine.cpp.

References llvm::cl::AlwaysPrefix, assert(), llvm::StringMap< ValueTy, AllocatorTy >::count(), llvm::StringRef::empty(), llvm::cl::Option::error(), llvm::StringMap< ValueTy, AllocatorTy >::find(), llvm::cl::Option::getFormattingFlag(), getOptionPred(), llvm::cl::Option::getValueExpectedFlag(), isGrouping(), isPrefixedOrGrouping(), llvm::Length, llvm::cl::Prefix, ProvideOption(), llvm::StringRef::size(), llvm::StringRef::substr(), and llvm::cl::ValueRequired.

◆ hasUTF8ByteOrderMark()

static bool hasUTF8ByteOrderMark ( ArrayRef< char > S )

static

Definition at line 1098 of file CommandLine.cpp.

References llvm::ArrayRef< T >::size().

◆ initCommonOptions()

static void initCommonOptions ( )

static

Definition at line 2657 of file CommandLine.cpp.

References CommonOptions, llvm::initDebugCounterOptions(), llvm::initDebugOptions(), llvm::initGraphWriterOptions(), llvm::initRandomSeedOptions(), llvm::initSignalsOptions(), llvm::initStatisticOptions(), llvm::initTimerOptions(), llvm::initTypeSizeOptions(), and llvm::initWithColorOptions().

Referenced by llvm::cl::getRegisteredOptions(), llvm::cl::HideUnrelatedOptions(), and llvm::cl::ParseCommandLineOptions().

◆ isGrouping()

static bool isGrouping ( const Option * O )

inlinestatic

Definition at line 122 of file CommandLine.cpp.

References llvm::cl::Grouping.

Referenced by HandlePrefixedOrGroupedOption(), and isPrefixedOrGrouping().

◆ isPrefixedOrGrouping()

static bool isPrefixedOrGrouping ( const Option * O )

inlinestatic

Definition at line 125 of file CommandLine.cpp.

References llvm::cl::AlwaysPrefix, isGrouping(), and llvm::cl::Prefix.

Referenced by HandlePrefixedOrGroupedOption().

◆ isQuote()

static bool isQuote ( char C )

static

Definition at line 803 of file CommandLine.cpp.

References llvm::CallingConv::C.

Referenced by llvm::cl::TokenizeGNUCommandLine().

◆ isWhitespace()

static bool isWhitespace ( char C )

static

Definition at line 795 of file CommandLine.cpp.

References llvm::CallingConv::C.

Referenced by isWhitespaceOrNull(), llvm::cl::tokenizeConfigFile(), and llvm::cl::TokenizeGNUCommandLine().

◆ isWhitespaceOrNull()

static bool isWhitespaceOrNull ( char C )

static

Definition at line 799 of file CommandLine.cpp.

References llvm::CallingConv::C, and isWhitespace().

Referenced by isWindowsSpecialChar(), isWindowsSpecialCharInCommandName(), and tokenizeWindowsCommandLineImpl().

◆ isWindowsSpecialChar()

static bool isWindowsSpecialChar ( char C )

static

Definition at line 907 of file CommandLine.cpp.

References llvm::CallingConv::C, and isWhitespaceOrNull().

Referenced by tokenizeWindowsCommandLineImpl().

◆ isWindowsSpecialCharInCommandName()

static bool isWindowsSpecialCharInCommandName ( char C )

static

Definition at line 910 of file CommandLine.cpp.

References llvm::CallingConv::C, and isWhitespaceOrNull().

Referenced by tokenizeWindowsCommandLineImpl().

◆ LookupNearestOption()

static Option * LookupNearestOption	(	StringRef	Arg,
		const StringMap< Option * > &	OptionsMap,
		std::string &	NearestString
	)

static

LookupNearestOption - Lookup the closest match to the option specified by the specified option on the command line.

If there is a value specified (after an equal sign) return that as well. This assumes that leading dashes have already been stripped.

Definition at line 554 of file CommandLine.cpp.

References llvm::StringMap< ValueTy, AllocatorTy >::begin(), llvm::StringRef::edit_distance(), llvm::StringRef::empty(), llvm::StringMap< ValueTy, AllocatorTy >::end(), LHS, Name, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::cl::ReallyHidden, RHS, llvm::StringRef::split(), and llvm::cl::ValueDisallowed.

◆ OptNameCompare()

static int OptNameCompare	(	const std::pair< const char , Option > *	LHS,
		const std::pair< const char , Option > *	RHS
	)

static

Definition at line 2263 of file CommandLine.cpp.

References LHS, and RHS.

Referenced by sortOpts().

◆ parseBackslash()

static size_t parseBackslash	(	StringRef	Src,
		size_t	I,
		SmallString< 128 > &	Token
	)

static

Backslashes are interpreted in a rather complicated way in the Windows-style command line, because backslashes are used both to separate path and to escape double quote.

This method consumes runs of backslashes as well as the following double quote if it's escaped.

If an even number of backslashes is followed by a double quote, one backslash is output for every pair of backslashes, and the last double quote remains unconsumed. The double quote will later be interpreted as the start or end of a quoted string in the main loop outside of this function.
If an odd number of backslashes is followed by a double quote, one backslash is output for every pair of backslashes, and a double quote is output for the last pair of backslash-double quote. The double quote is consumed in this case.
Otherwise, backslashes are interpreted literally.

Definition at line 883 of file CommandLine.cpp.

References llvm::SmallString< InternalLen >::append(), I, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by tokenizeWindowsCommandLineImpl().

◆ parseDouble()

static bool parseDouble	(	Option &	O,
		StringRef	Arg,
		double &	Value
	)

static

Definition at line 2051 of file CommandLine.cpp.

◆ ProvideOption()

static bool ProvideOption	(	Option *	Handler,
		StringRef	ArgName,
		StringRef	Value,
		int	argc,
		const char const	argv,
		int &	i
	)

inlinestatic

ProvideOption - For Value, this differentiates between an empty value ("") and a null value (StringRef()).

The later is accepted for arguments that don't allow a value (-foo) the former is rejected (-foo=).

Definition at line 631 of file CommandLine.cpp.

References llvm::cl::AlwaysPrefix, assert(), CommaSeparateAndAddOccurrence(), llvm::cl::Option::error(), llvm::cl::Option::getFormattingFlag(), llvm::cl::Option::getNumAdditionalVals(), llvm::cl::Option::getValueExpectedFlag(), llvm::cl::ValueDisallowed, llvm::cl::ValueOptional, and llvm::cl::ValueRequired.

Referenced by HandlePrefixedOrGroupedOption(), and llvm::cl::ProvidePositionalOption().

◆ RequiresValue()

static bool RequiresValue ( const Option * O )

static

Definition at line 785 of file CommandLine.cpp.

References llvm::cl::OneOrMore, and llvm::cl::Required.

◆ shouldPrintOption()

static bool shouldPrintOption	(	StringRef	Name,
		StringRef	Description,
		const Option &	O
	)

static

Definition at line 2094 of file CommandLine.cpp.

References llvm::StringRef::empty(), Name, and llvm::cl::ValueOptional.

Referenced by llvm::cl::generic_parser_base::getOptionWidth(), and llvm::cl::generic_parser_base::printOptionInfo().

◆ sortOpts()

static void sortOpts	(	StringMap< Option * > &	OptMap,
		SmallVectorImpl< std::pair< const char , Option > > &	Opts,
		bool	ShowHidden
	)

static

Definition at line 2274 of file CommandLine.cpp.

References llvm::array_pod_sort(), llvm::StringMap< ValueTy, AllocatorTy >::begin(), llvm::StringMap< ValueTy, AllocatorTy >::end(), llvm::cl::Hidden, I, llvm::SmallPtrSetImpl< PtrType >::insert(), OptNameCompare(), and llvm::cl::ReallyHidden.

◆ sortSubCommands()

static void sortSubCommands	(	const SmallPtrSetImpl< SubCommand * > &	SubMap,
		SmallVectorImpl< std::pair< const char , SubCommand > > &	Subs
	)

static

Definition at line 2302 of file CommandLine.cpp.

References llvm::array_pod_sort(), and SubNameCompare().

◆ SubNameCompare()

static int SubNameCompare	(	const std::pair< const char , SubCommand > *	LHS,
		const std::pair< const char , SubCommand > *	RHS
	)

static

Definition at line 2268 of file CommandLine.cpp.

References LHS, and RHS.

Referenced by sortSubCommands().

◆ tokenizeWindowsCommandLineImpl()

static void tokenizeWindowsCommandLineImpl	(	StringRef	Src,
		StringSaver &	Saver,
		function_ref< void(StringRef)>	AddToken,
		bool	AlwaysCopy,
		function_ref< void()>	MarkEOL,
		bool	InitialCommandName
	)

inlinestatic

Definition at line 916 of file CommandLine.cpp.

References assert(), llvm::SmallVectorImpl< T >::clear(), llvm::SmallVectorBase< Size_T >::empty(), I, INIT, isWhitespaceOrNull(), isWindowsSpecialChar(), isWindowsSpecialCharInCommandName(), llvm_unreachable, parseBackslash(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::StringSaver::save(), and llvm::SmallString< InternalLen >::str().

Referenced by llvm::cl::TokenizeWindowsCommandLine(), llvm::cl::TokenizeWindowsCommandLineFull(), and llvm::cl::TokenizeWindowsCommandLineNoCopy().

Variable Documentation

◆ ArgHelpPrefix

StringRef ArgHelpPrefix = " - "

static

Definition at line 103 of file CommandLine.cpp.

Referenced by argPlusPrefixesSize(), getOptionPrefixesSize(), llvm::cl::Option::printEnumValHelpStr(), and llvm::cl::Option::printHelpStr().

◆ ArgPrefix

StringRef ArgPrefix = "-"

static

Definition at line 101 of file CommandLine.cpp.

Referenced by argPlusPrefixesSize(), and argPrefix().

◆ ArgPrefixLong

StringRef ArgPrefixLong = "--"

static

Definition at line 102 of file CommandLine.cpp.

Referenced by argPlusPrefixesSize(), and argPrefix().

◆ CommonOptions

ManagedStatic<CommandLineCommonOptions> CommonOptions

static

Definition at line 2655 of file CommandLine.cpp.

Referenced by llvm::cl::AddExtraVersionPrinter(), llvm::cl::HideUnrelatedOptions(), initCommonOptions(), llvm::cl::PrintHelpMessage(), llvm::cl::PrintVersionMessage(), and llvm::cl::SetVersionPrinter().

◆ DefaultPad

const size_t DefaultPad = 2

static

Definition at line 99 of file CommandLine.cpp.

◆ EmptyOption

StringRef EmptyOption = "<empty>"

static

Definition at line 2088 of file CommandLine.cpp.

Referenced by llvm::cl::generic_parser_base::getOptionWidth(), and llvm::cl::generic_parser_base::printOptionInfo().

◆ EqValue

StringRef EqValue = "=<value>"

static

Definition at line 2087 of file CommandLine.cpp.

Referenced by llvm::cl::generic_parser_base::getOptionWidth(), and llvm::cl::generic_parser_base::printOptionInfo().

◆ GlobalParser

ManagedStatic<CommandLineParser> GlobalParser

static

Definition at line 405 of file CommandLine.cpp.

Referenced by llvm::cl::Option::addArgument(), llvm::cl::AddLiteralOption(), llvm::cl::Option::error(), llvm::cl::extrahelp::extrahelp(), llvm::cl::getRegisteredOptions(), llvm::cl::getRegisteredSubcommands(), llvm::cl::SubCommand::operator bool(), llvm::cl::ParseCommandLineOptions(), llvm::cl::PrintOptionValues(), llvm::cl::SubCommand::registerSubCommand(), llvm::cl::Option::removeArgument(), llvm::cl::ResetCommandLineParser(), llvm::cl::Option::setArgStr(), and llvm::cl::SubCommand::unregisterSubCommand().

◆ MaxOptWidth

const size_t MaxOptWidth = 8

static

Definition at line 2172 of file CommandLine.cpp.

Referenced by llvm::cl::generic_parser_base::printGenericOptionDiff().

◆ OptionPrefix

StringRef OptionPrefix = " ="

static

Definition at line 2089 of file CommandLine.cpp.

Referenced by getOptionPrefixesSize(), and llvm::cl::generic_parser_base::printOptionInfo().

Namespaces

Macros

Functions

Variables

Macro Definition Documentation

◆ DEBUG_TYPE

◆ LLVM_IS_DEBUG_BUILD

◆ PRINT_OPT_DIFF

Function Documentation

◆ argPlusPrefixesSize()

◆ argPrefix()

◆ CommaSeparateAndAddOccurrence()

◆ EatsUnboundedNumberOfValues()

◆ ExpandBasePaths()

◆ getOptionPred()

◆ getOptionPrefixesSize()

◆ getValueStr()

◆ HandlePrefixedOrGroupedOption()

◆ hasUTF8ByteOrderMark()

◆ initCommonOptions()

◆ isGrouping()

◆ isPrefixedOrGrouping()

◆ isQuote()

◆ isWhitespace()

◆ isWhitespaceOrNull()

◆ isWindowsSpecialChar()

◆ isWindowsSpecialCharInCommandName()

◆ LookupNearestOption()

◆ OptNameCompare()

◆ parseBackslash()

◆ parseDouble()

◆ ProvideOption()

◆ RequiresValue()

◆ shouldPrintOption()

◆ sortOpts()

◆ sortSubCommands()

◆ SubNameCompare()

◆ tokenizeWindowsCommandLineImpl()

Variable Documentation

◆ ArgHelpPrefix

◆ ArgPrefix

◆ ArgPrefixLong

◆ CommonOptions

◆ DefaultPad

◆ EmptyOption

◆ EqValue

◆ GlobalParser

◆ MaxOptWidth

◆ OptionPrefix