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authorDevtools Arcadia <[email protected]>2022-02-07 18:08:42 +0300
committerDevtools Arcadia <[email protected]>2022-02-07 18:08:42 +0300
commit1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch)
treee26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/llvm12/lib/Support/CommandLine.cpp
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ref:cde9a383711a11544ce7e107a78147fb96cc4029
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diff --git a/contrib/libs/llvm12/lib/Support/CommandLine.cpp b/contrib/libs/llvm12/lib/Support/CommandLine.cpp
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+++ b/contrib/libs/llvm12/lib/Support/CommandLine.cpp
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+//===-- CommandLine.cpp - Command line parser implementation --------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This class implements a command line argument processor that is useful when
+// creating a tool. It provides a simple, minimalistic interface that is easily
+// extensible and supports nonlocal (library) command line options.
+//
+// Note that rather than trying to figure out what this code does, you could try
+// reading the library documentation located in docs/CommandLine.html
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/CommandLine.h"
+#include "llvm-c/Support.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/STLExtras.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/Triple.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/Host.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 <map>
+#include <string>
+using namespace llvm;
+using namespace cl;
+
+#define DEBUG_TYPE "commandline"
+
+//===----------------------------------------------------------------------===//
+// Template instantiations and anchors.
+//
+namespace llvm {
+namespace cl {
+template class basic_parser<bool>;
+template class basic_parser<boolOrDefault>;
+template class basic_parser<int>;
+template class basic_parser<long>;
+template class basic_parser<long long>;
+template class basic_parser<unsigned>;
+template class basic_parser<unsigned long>;
+template class basic_parser<unsigned long long>;
+template class basic_parser<double>;
+template class basic_parser<float>;
+template class basic_parser<std::string>;
+template class basic_parser<char>;
+
+template class opt<unsigned>;
+template class opt<int>;
+template class opt<std::string>;
+template class opt<char>;
+template class opt<bool>;
+}
+} // end namespace llvm::cl
+
+// Pin the vtables to this file.
+void GenericOptionValue::anchor() {}
+void OptionValue<boolOrDefault>::anchor() {}
+void OptionValue<std::string>::anchor() {}
+void Option::anchor() {}
+void basic_parser_impl::anchor() {}
+void parser<bool>::anchor() {}
+void parser<boolOrDefault>::anchor() {}
+void parser<int>::anchor() {}
+void parser<long>::anchor() {}
+void parser<long long>::anchor() {}
+void parser<unsigned>::anchor() {}
+void parser<unsigned long>::anchor() {}
+void parser<unsigned long long>::anchor() {}
+void parser<double>::anchor() {}
+void parser<float>::anchor() {}
+void parser<std::string>::anchor() {}
+void parser<char>::anchor() {}
+
+//===----------------------------------------------------------------------===//
+
+const static size_t DefaultPad = 2;
+
+static StringRef ArgPrefix = "-";
+static StringRef ArgPrefixLong = "--";
+static StringRef ArgHelpPrefix = " - ";
+
+static size_t argPlusPrefixesSize(StringRef ArgName, size_t Pad = DefaultPad) {
+ size_t Len = ArgName.size();
+ if (Len == 1)
+ return Len + Pad + ArgPrefix.size() + ArgHelpPrefix.size();
+ return Len + Pad + ArgPrefixLong.size() + ArgHelpPrefix.size();
+}
+
+static SmallString<8> argPrefix(StringRef ArgName, size_t Pad = DefaultPad) {
+ SmallString<8> Prefix;
+ for (size_t I = 0; I < Pad; ++I) {
+ Prefix.push_back(' ');
+ }
+ Prefix.append(ArgName.size() > 1 ? ArgPrefixLong : ArgPrefix);
+ return Prefix;
+}
+
+// Option predicates...
+static inline bool isGrouping(const Option *O) {
+ return O->getMiscFlags() & cl::Grouping;
+}
+static inline bool isPrefixedOrGrouping(const Option *O) {
+ return isGrouping(O) || O->getFormattingFlag() == cl::Prefix ||
+ O->getFormattingFlag() == cl::AlwaysPrefix;
+}
+
+
+namespace {
+
+class PrintArg {
+ StringRef ArgName;
+ size_t Pad;
+public:
+ PrintArg(StringRef ArgName, size_t Pad = DefaultPad) : ArgName(ArgName), Pad(Pad) {}
+ friend raw_ostream &operator<<(raw_ostream &OS, const PrintArg &);
+};
+
+raw_ostream &operator<<(raw_ostream &OS, const PrintArg& Arg) {
+ OS << argPrefix(Arg.ArgName, Arg.Pad) << Arg.ArgName;
+ return OS;
+}
+
+class CommandLineParser {
+public:
+ // Globals for name and overview of program. Program name is not a string to
+ // avoid static ctor/dtor issues.
+ std::string ProgramName;
+ StringRef ProgramOverview;
+
+ // This collects additional help to be printed.
+ std::vector<StringRef> MoreHelp;
+
+ // This collects Options added with the cl::DefaultOption flag. Since they can
+ // be overridden, they are not added to the appropriate SubCommands until
+ // ParseCommandLineOptions actually runs.
+ SmallVector<Option*, 4> DefaultOptions;
+
+ // This collects the different option categories that have been registered.
+ SmallPtrSet<OptionCategory *, 16> RegisteredOptionCategories;
+
+ // This collects the different subcommands that have been registered.
+ SmallPtrSet<SubCommand *, 4> RegisteredSubCommands;
+
+ CommandLineParser() : ActiveSubCommand(nullptr) {
+ registerSubCommand(&*TopLevelSubCommand);
+ registerSubCommand(&*AllSubCommands);
+ }
+
+ void ResetAllOptionOccurrences();
+
+ bool ParseCommandLineOptions(int argc, const char *const *argv,
+ StringRef Overview, raw_ostream *Errs = nullptr,
+ bool LongOptionsUseDoubleDash = false);
+
+ void addLiteralOption(Option &Opt, SubCommand *SC, StringRef Name) {
+ if (Opt.hasArgStr())
+ return;
+ if (!SC->OptionsMap.insert(std::make_pair(Name, &Opt)).second) {
+ errs() << ProgramName << ": CommandLine Error: Option '" << Name
+ << "' registered more than once!\n";
+ report_fatal_error("inconsistency in registered CommandLine options");
+ }
+
+ // If we're adding this to all sub-commands, add it to the ones that have
+ // already been registered.
+ if (SC == &*AllSubCommands) {
+ for (auto *Sub : RegisteredSubCommands) {
+ if (SC == Sub)
+ continue;
+ addLiteralOption(Opt, Sub, Name);
+ }
+ }
+ }
+
+ void addLiteralOption(Option &Opt, StringRef Name) {
+ if (Opt.Subs.empty())
+ addLiteralOption(Opt, &*TopLevelSubCommand, Name);
+ else {
+ for (auto SC : Opt.Subs)
+ addLiteralOption(Opt, SC, Name);
+ }
+ }
+
+ void addOption(Option *O, SubCommand *SC) {
+ bool HadErrors = false;
+ if (O->hasArgStr()) {
+ // If it's a DefaultOption, check to make sure it isn't already there.
+ if (O->isDefaultOption() &&
+ SC->OptionsMap.find(O->ArgStr) != SC->OptionsMap.end())
+ return;
+
+ // Add argument to the argument map!
+ if (!SC->OptionsMap.insert(std::make_pair(O->ArgStr, O)).second) {
+ errs() << ProgramName << ": CommandLine Error: Option '" << O->ArgStr
+ << "' registered more than once!\n";
+ HadErrors = true;
+ }
+ }
+
+ // Remember information about positional options.
+ if (O->getFormattingFlag() == cl::Positional)
+ SC->PositionalOpts.push_back(O);
+ else if (O->getMiscFlags() & cl::Sink) // Remember sink options
+ SC->SinkOpts.push_back(O);
+ else if (O->getNumOccurrencesFlag() == cl::ConsumeAfter) {
+ if (SC->ConsumeAfterOpt) {
+ O->error("Cannot specify more than one option with cl::ConsumeAfter!");
+ HadErrors = true;
+ }
+ SC->ConsumeAfterOpt = O;
+ }
+
+ // Fail hard if there were errors. These are strictly unrecoverable and
+ // indicate serious issues such as conflicting option names or an
+ // incorrectly
+ // linked LLVM distribution.
+ if (HadErrors)
+ report_fatal_error("inconsistency in registered CommandLine options");
+
+ // If we're adding this to all sub-commands, add it to the ones that have
+ // already been registered.
+ if (SC == &*AllSubCommands) {
+ for (auto *Sub : RegisteredSubCommands) {
+ if (SC == Sub)
+ continue;
+ addOption(O, Sub);
+ }
+ }
+ }
+
+ void addOption(Option *O, bool ProcessDefaultOption = false) {
+ if (!ProcessDefaultOption && O->isDefaultOption()) {
+ DefaultOptions.push_back(O);
+ return;
+ }
+
+ if (O->Subs.empty()) {
+ addOption(O, &*TopLevelSubCommand);
+ } else {
+ for (auto SC : O->Subs)
+ addOption(O, SC);
+ }
+ }
+
+ void removeOption(Option *O, SubCommand *SC) {
+ SmallVector<StringRef, 16> OptionNames;
+ O->getExtraOptionNames(OptionNames);
+ if (O->hasArgStr())
+ OptionNames.push_back(O->ArgStr);
+
+ SubCommand &Sub = *SC;
+ auto End = Sub.OptionsMap.end();
+ for (auto Name : OptionNames) {
+ auto I = Sub.OptionsMap.find(Name);
+ if (I != End && I->getValue() == O)
+ Sub.OptionsMap.erase(I);
+ }
+
+ if (O->getFormattingFlag() == cl::Positional)
+ for (auto Opt = Sub.PositionalOpts.begin();
+ Opt != Sub.PositionalOpts.end(); ++Opt) {
+ if (*Opt == O) {
+ Sub.PositionalOpts.erase(Opt);
+ break;
+ }
+ }
+ else if (O->getMiscFlags() & cl::Sink)
+ for (auto Opt = Sub.SinkOpts.begin(); Opt != Sub.SinkOpts.end(); ++Opt) {
+ if (*Opt == O) {
+ Sub.SinkOpts.erase(Opt);
+ break;
+ }
+ }
+ else if (O == Sub.ConsumeAfterOpt)
+ Sub.ConsumeAfterOpt = nullptr;
+ }
+
+ void removeOption(Option *O) {
+ if (O->Subs.empty())
+ removeOption(O, &*TopLevelSubCommand);
+ else {
+ if (O->isInAllSubCommands()) {
+ for (auto SC : RegisteredSubCommands)
+ removeOption(O, SC);
+ } else {
+ for (auto SC : O->Subs)
+ removeOption(O, SC);
+ }
+ }
+ }
+
+ bool hasOptions(const SubCommand &Sub) const {
+ return (!Sub.OptionsMap.empty() || !Sub.PositionalOpts.empty() ||
+ nullptr != Sub.ConsumeAfterOpt);
+ }
+
+ bool hasOptions() const {
+ for (const auto *S : RegisteredSubCommands) {
+ if (hasOptions(*S))
+ return true;
+ }
+ return false;
+ }
+
+ SubCommand *getActiveSubCommand() { return ActiveSubCommand; }
+
+ void updateArgStr(Option *O, StringRef NewName, SubCommand *SC) {
+ SubCommand &Sub = *SC;
+ if (!Sub.OptionsMap.insert(std::make_pair(NewName, O)).second) {
+ errs() << ProgramName << ": CommandLine Error: Option '" << O->ArgStr
+ << "' registered more than once!\n";
+ report_fatal_error("inconsistency in registered CommandLine options");
+ }
+ Sub.OptionsMap.erase(O->ArgStr);
+ }
+
+ void updateArgStr(Option *O, StringRef NewName) {
+ if (O->Subs.empty())
+ updateArgStr(O, NewName, &*TopLevelSubCommand);
+ else {
+ if (O->isInAllSubCommands()) {
+ for (auto SC : RegisteredSubCommands)
+ updateArgStr(O, NewName, SC);
+ } else {
+ for (auto SC : O->Subs)
+ updateArgStr(O, NewName, SC);
+ }
+ }
+ }
+
+ void printOptionValues();
+
+ void registerCategory(OptionCategory *cat) {
+ assert(count_if(RegisteredOptionCategories,
+ [cat](const OptionCategory *Category) {
+ return cat->getName() == Category->getName();
+ }) == 0 &&
+ "Duplicate option categories");
+
+ RegisteredOptionCategories.insert(cat);
+ }
+
+ void registerSubCommand(SubCommand *sub) {
+ assert(count_if(RegisteredSubCommands,
+ [sub](const SubCommand *Sub) {
+ return (!sub->getName().empty()) &&
+ (Sub->getName() == sub->getName());
+ }) == 0 &&
+ "Duplicate subcommands");
+ RegisteredSubCommands.insert(sub);
+
+ // For all options that have been registered for all subcommands, add the
+ // option to this subcommand now.
+ if (sub != &*AllSubCommands) {
+ for (auto &E : AllSubCommands->OptionsMap) {
+ Option *O = E.second;
+ if ((O->isPositional() || O->isSink() || O->isConsumeAfter()) ||
+ O->hasArgStr())
+ addOption(O, sub);
+ else
+ addLiteralOption(*O, sub, E.first());
+ }
+ }
+ }
+
+ void unregisterSubCommand(SubCommand *sub) {
+ RegisteredSubCommands.erase(sub);
+ }
+
+ iterator_range<typename SmallPtrSet<SubCommand *, 4>::iterator>
+ getRegisteredSubcommands() {
+ return make_range(RegisteredSubCommands.begin(),
+ RegisteredSubCommands.end());
+ }
+
+ void reset() {
+ ActiveSubCommand = nullptr;
+ ProgramName.clear();
+ ProgramOverview = StringRef();
+
+ MoreHelp.clear();
+ RegisteredOptionCategories.clear();
+
+ ResetAllOptionOccurrences();
+ RegisteredSubCommands.clear();
+
+ TopLevelSubCommand->reset();
+ AllSubCommands->reset();
+ registerSubCommand(&*TopLevelSubCommand);
+ registerSubCommand(&*AllSubCommands);
+
+ DefaultOptions.clear();
+ }
+
+private:
+ SubCommand *ActiveSubCommand;
+
+ Option *LookupOption(SubCommand &Sub, StringRef &Arg, StringRef &Value);
+ Option *LookupLongOption(SubCommand &Sub, StringRef &Arg, StringRef &Value,
+ bool LongOptionsUseDoubleDash, bool HaveDoubleDash) {
+ Option *Opt = LookupOption(Sub, Arg, Value);
+ if (Opt && LongOptionsUseDoubleDash && !HaveDoubleDash && !isGrouping(Opt))
+ return nullptr;
+ return Opt;
+ }
+ SubCommand *LookupSubCommand(StringRef Name);
+};
+
+} // namespace
+
+static ManagedStatic<CommandLineParser> GlobalParser;
+
+void cl::AddLiteralOption(Option &O, StringRef Name) {
+ GlobalParser->addLiteralOption(O, Name);
+}
+
+extrahelp::extrahelp(StringRef Help) : morehelp(Help) {
+ GlobalParser->MoreHelp.push_back(Help);
+}
+
+void Option::addArgument() {
+ GlobalParser->addOption(this);
+ FullyInitialized = true;
+}
+
+void Option::removeArgument() { GlobalParser->removeOption(this); }
+
+void Option::setArgStr(StringRef S) {
+ if (FullyInitialized)
+ GlobalParser->updateArgStr(this, S);
+ assert((S.empty() || S[0] != '-') && "Option can't start with '-");
+ ArgStr = S;
+ if (ArgStr.size() == 1)
+ setMiscFlag(Grouping);
+}
+
+void Option::addCategory(OptionCategory &C) {
+ assert(!Categories.empty() && "Categories cannot be empty.");
+ // Maintain backward compatibility by replacing the default GeneralCategory
+ // if it's still set. Otherwise, just add the new one. The GeneralCategory
+ // must be explicitly added if you want multiple categories that include it.
+ if (&C != &GeneralCategory && Categories[0] == &GeneralCategory)
+ Categories[0] = &C;
+ else if (!is_contained(Categories, &C))
+ Categories.push_back(&C);
+}
+
+void Option::reset() {
+ NumOccurrences = 0;
+ setDefault();
+ if (isDefaultOption())
+ removeArgument();
+}
+
+// Initialise the general option category.
+OptionCategory llvm::cl::GeneralCategory("General options");
+
+void OptionCategory::registerCategory() {
+ GlobalParser->registerCategory(this);
+}
+
+// A special subcommand representing no subcommand. It is particularly important
+// that this ManagedStatic uses constant initailization and not dynamic
+// initialization because it is referenced from cl::opt constructors, which run
+// dynamically in an arbitrary order.
+LLVM_REQUIRE_CONSTANT_INITIALIZATION
+ManagedStatic<SubCommand> llvm::cl::TopLevelSubCommand;
+
+// A special subcommand that can be used to put an option into all subcommands.
+ManagedStatic<SubCommand> llvm::cl::AllSubCommands;
+
+void SubCommand::registerSubCommand() {
+ GlobalParser->registerSubCommand(this);
+}
+
+void SubCommand::unregisterSubCommand() {
+ GlobalParser->unregisterSubCommand(this);
+}
+
+void SubCommand::reset() {
+ PositionalOpts.clear();
+ SinkOpts.clear();
+ OptionsMap.clear();
+
+ ConsumeAfterOpt = nullptr;
+}
+
+SubCommand::operator bool() const {
+ return (GlobalParser->getActiveSubCommand() == this);
+}
+
+//===----------------------------------------------------------------------===//
+// Basic, shared command line option processing machinery.
+//
+
+/// LookupOption - Lookup 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.
+Option *CommandLineParser::LookupOption(SubCommand &Sub, StringRef &Arg,
+ StringRef &Value) {
+ // Reject all dashes.
+ if (Arg.empty())
+ return nullptr;
+ assert(&Sub != &*AllSubCommands);
+
+ size_t EqualPos = Arg.find('=');
+
+ // If we have an equals sign, remember the value.
+ if (EqualPos == StringRef::npos) {
+ // Look up the option.
+ return Sub.OptionsMap.lookup(Arg);
+ }
+
+ // If the argument before the = is a valid option name and the option allows
+ // non-prefix form (ie is not AlwaysPrefix), we match. If not, signal match
+ // failure by returning nullptr.
+ auto I = Sub.OptionsMap.find(Arg.substr(0, EqualPos));
+ if (I == Sub.OptionsMap.end())
+ return nullptr;
+
+ auto O = I->second;
+ if (O->getFormattingFlag() == cl::AlwaysPrefix)
+ return nullptr;
+
+ Value = Arg.substr(EqualPos + 1);
+ Arg = Arg.substr(0, EqualPos);
+ return I->second;
+}
+
+SubCommand *CommandLineParser::LookupSubCommand(StringRef Name) {
+ if (Name.empty())
+ return &*TopLevelSubCommand;
+ for (auto S : RegisteredSubCommands) {
+ if (S == &*AllSubCommands)
+ continue;
+ if (S->getName().empty())
+ continue;
+
+ if (StringRef(S->getName()) == StringRef(Name))
+ return S;
+ }
+ return &*TopLevelSubCommand;
+}
+
+/// 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.
+static Option *LookupNearestOption(StringRef Arg,
+ const StringMap<Option *> &OptionsMap,
+ std::string &NearestString) {
+ // Reject all dashes.
+ if (Arg.empty())
+ return nullptr;
+
+ // Split on any equal sign.
+ std::pair<StringRef, StringRef> SplitArg = Arg.split('=');
+ StringRef &LHS = SplitArg.first; // LHS == Arg when no '=' is present.
+ StringRef &RHS = SplitArg.second;
+
+ // Find the closest match.
+ Option *Best = nullptr;
+ unsigned BestDistance = 0;
+ for (StringMap<Option *>::const_iterator it = OptionsMap.begin(),
+ ie = OptionsMap.end();
+ it != ie; ++it) {
+ Option *O = it->second;
+ // Do not suggest really hidden options (not shown in any help).
+ if (O->getOptionHiddenFlag() == ReallyHidden)
+ continue;
+
+ SmallVector<StringRef, 16> OptionNames;
+ O->getExtraOptionNames(OptionNames);
+ if (O->hasArgStr())
+ OptionNames.push_back(O->ArgStr);
+
+ bool PermitValue = O->getValueExpectedFlag() != cl::ValueDisallowed;
+ StringRef Flag = PermitValue ? LHS : Arg;
+ for (auto Name : OptionNames) {
+ unsigned Distance = StringRef(Name).edit_distance(
+ Flag, /*AllowReplacements=*/true, /*MaxEditDistance=*/BestDistance);
+ if (!Best || Distance < BestDistance) {
+ Best = O;
+ BestDistance = Distance;
+ if (RHS.empty() || !PermitValue)
+ NearestString = std::string(Name);
+ else
+ NearestString = (Twine(Name) + "=" + RHS).str();
+ }
+ }
+ }
+
+ return Best;
+}
+
+/// CommaSeparateAndAddOccurrence - A wrapper around Handler->addOccurrence()
+/// that does special handling of cl::CommaSeparated options.
+static bool CommaSeparateAndAddOccurrence(Option *Handler, unsigned pos,
+ StringRef ArgName, StringRef Value,
+ bool MultiArg = false) {
+ // Check to see if this option accepts a comma separated list of values. If
+ // it does, we have to split up the value into multiple values.
+ if (Handler->getMiscFlags() & CommaSeparated) {
+ StringRef Val(Value);
+ StringRef::size_type Pos = Val.find(',');
+
+ while (Pos != StringRef::npos) {
+ // Process the portion before the comma.
+ if (Handler->addOccurrence(pos, ArgName, Val.substr(0, Pos), MultiArg))
+ return true;
+ // Erase the portion before the comma, AND the comma.
+ Val = Val.substr(Pos + 1);
+ // Check for another comma.
+ Pos = Val.find(',');
+ }
+
+ Value = Val;
+ }
+
+ return Handler->addOccurrence(pos, ArgName, Value, MultiArg);
+}
+
+/// 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=).
+static inline bool ProvideOption(Option *Handler, StringRef ArgName,
+ StringRef Value, int argc,
+ const char *const *argv, int &i) {
+ // Is this a multi-argument option?
+ unsigned NumAdditionalVals = Handler->getNumAdditionalVals();
+
+ // Enforce value requirements
+ switch (Handler->getValueExpectedFlag()) {
+ case ValueRequired:
+ if (!Value.data()) { // No value specified?
+ // If no other argument or the option only supports prefix form, we
+ // cannot look at the next argument.
+ if (i + 1 >= argc || Handler->getFormattingFlag() == cl::AlwaysPrefix)
+ return Handler->error("requires a value!");
+ // Steal the next argument, like for '-o filename'
+ assert(argv && "null check");
+ Value = StringRef(argv[++i]);
+ }
+ break;
+ case ValueDisallowed:
+ if (NumAdditionalVals > 0)
+ return Handler->error("multi-valued option specified"
+ " with ValueDisallowed modifier!");
+
+ if (Value.data())
+ return Handler->error("does not allow a value! '" + Twine(Value) +
+ "' specified.");
+ break;
+ case ValueOptional:
+ break;
+ }
+
+ // If this isn't a multi-arg option, just run the handler.
+ if (NumAdditionalVals == 0)
+ return CommaSeparateAndAddOccurrence(Handler, i, ArgName, Value);
+
+ // If it is, run the handle several times.
+ bool MultiArg = false;
+
+ if (Value.data()) {
+ if (CommaSeparateAndAddOccurrence(Handler, i, ArgName, Value, MultiArg))
+ return true;
+ --NumAdditionalVals;
+ MultiArg = true;
+ }
+
+ while (NumAdditionalVals > 0) {
+ if (i + 1 >= argc)
+ return Handler->error("not enough values!");
+ assert(argv && "null check");
+ Value = StringRef(argv[++i]);
+
+ if (CommaSeparateAndAddOccurrence(Handler, i, ArgName, Value, MultiArg))
+ return true;
+ MultiArg = true;
+ --NumAdditionalVals;
+ }
+ return false;
+}
+
+bool llvm::cl::ProvidePositionalOption(Option *Handler, StringRef Arg, int i) {
+ int Dummy = i;
+ return ProvideOption(Handler, Handler->ArgStr, Arg, 0, nullptr, Dummy);
+}
+
+// getOptionPred - Check to see if there are any options that satisfy the
+// specified predicate with names that are the prefixes in Name. This is
+// checked by progressively stripping characters off of the name, checking to
+// see if there options that satisfy the predicate. If we find one, return it,
+// otherwise return null.
+//
+static Option *getOptionPred(StringRef Name, size_t &Length,
+ bool (*Pred)(const Option *),
+ const StringMap<Option *> &OptionsMap) {
+ StringMap<Option *>::const_iterator OMI = OptionsMap.find(Name);
+ if (OMI != OptionsMap.end() && !Pred(OMI->getValue()))
+ OMI = OptionsMap.end();
+
+ // Loop while we haven't found an option and Name still has at least two
+ // characters in it (so that the next iteration will not be the empty
+ // string.
+ while (OMI == OptionsMap.end() && Name.size() > 1) {
+ Name = Name.substr(0, Name.size() - 1); // Chop off the last character.
+ OMI = OptionsMap.find(Name);
+ if (OMI != OptionsMap.end() && !Pred(OMI->getValue()))
+ OMI = OptionsMap.end();
+ }
+
+ if (OMI != OptionsMap.end() && Pred(OMI->second)) {
+ Length = Name.size();
+ return OMI->second; // Found one!
+ }
+ return nullptr; // No option found!
+}
+
+/// 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.
+static Option *
+HandlePrefixedOrGroupedOption(StringRef &Arg, StringRef &Value,
+ bool &ErrorParsing,
+ const StringMap<Option *> &OptionsMap) {
+ if (Arg.size() == 1)
+ return nullptr;
+
+ // Do the lookup!
+ size_t Length = 0;
+ Option *PGOpt = getOptionPred(Arg, Length, isPrefixedOrGrouping, OptionsMap);
+ if (!PGOpt)
+ return nullptr;
+
+ do {
+ StringRef MaybeValue =
+ (Length < Arg.size()) ? Arg.substr(Length) : StringRef();
+ Arg = Arg.substr(0, Length);
+ assert(OptionsMap.count(Arg) && OptionsMap.find(Arg)->second == PGOpt);
+
+ // cl::Prefix options do not preserve '=' when used separately.
+ // The behavior for them with grouped options should be the same.
+ if (MaybeValue.empty() || PGOpt->getFormattingFlag() == cl::AlwaysPrefix ||
+ (PGOpt->getFormattingFlag() == cl::Prefix && MaybeValue[0] != '=')) {
+ Value = MaybeValue;
+ return PGOpt;
+ }
+
+ if (MaybeValue[0] == '=') {
+ Value = MaybeValue.substr(1);
+ return PGOpt;
+ }
+
+ // This must be a grouped option.
+ assert(isGrouping(PGOpt) && "Broken getOptionPred!");
+
+ // Grouping options inside a group can't have values.
+ if (PGOpt->getValueExpectedFlag() == cl::ValueRequired) {
+ ErrorParsing |= PGOpt->error("may not occur within a group!");
+ return nullptr;
+ }
+
+ // Because the value for the option is not required, we don't need to pass
+ // argc/argv in.
+ int Dummy = 0;
+ ErrorParsing |= ProvideOption(PGOpt, Arg, StringRef(), 0, nullptr, Dummy);
+
+ // Get the next grouping option.
+ Arg = MaybeValue;
+ PGOpt = getOptionPred(Arg, Length, isGrouping, OptionsMap);
+ } while (PGOpt);
+
+ // We could not find a grouping option in the remainder of Arg.
+ return nullptr;
+}
+
+static bool RequiresValue(const Option *O) {
+ return O->getNumOccurrencesFlag() == cl::Required ||
+ O->getNumOccurrencesFlag() == cl::OneOrMore;
+}
+
+static bool EatsUnboundedNumberOfValues(const Option *O) {
+ return O->getNumOccurrencesFlag() == cl::ZeroOrMore ||
+ O->getNumOccurrencesFlag() == cl::OneOrMore;
+}
+
+static bool isWhitespace(char C) {
+ return C == ' ' || C == '\t' || C == '\r' || C == '\n';
+}
+
+static bool isWhitespaceOrNull(char C) {
+ return isWhitespace(C) || C == '\0';
+}
+
+static bool isQuote(char C) { return C == '\"' || C == '\''; }
+
+void cl::TokenizeGNUCommandLine(StringRef Src, StringSaver &Saver,
+ SmallVectorImpl<const char *> &NewArgv,
+ bool MarkEOLs) {
+ SmallString<128> Token;
+ for (size_t I = 0, E = Src.size(); I != E; ++I) {
+ // Consume runs of whitespace.
+ if (Token.empty()) {
+ while (I != E && isWhitespace(Src[I])) {
+ // Mark the end of lines in response files.
+ if (MarkEOLs && Src[I] == '\n')
+ NewArgv.push_back(nullptr);
+ ++I;
+ }
+ if (I == E)
+ break;
+ }
+
+ char C = Src[I];
+
+ // Backslash escapes the next character.
+ if (I + 1 < E && C == '\\') {
+ ++I; // Skip the escape.
+ Token.push_back(Src[I]);
+ continue;
+ }
+
+ // Consume a quoted string.
+ if (isQuote(C)) {
+ ++I;
+ while (I != E && Src[I] != C) {
+ // Backslash escapes the next character.
+ if (Src[I] == '\\' && I + 1 != E)
+ ++I;
+ Token.push_back(Src[I]);
+ ++I;
+ }
+ if (I == E)
+ break;
+ continue;
+ }
+
+ // End the token if this is whitespace.
+ if (isWhitespace(C)) {
+ if (!Token.empty())
+ NewArgv.push_back(Saver.save(StringRef(Token)).data());
+ // Mark the end of lines in response files.
+ if (MarkEOLs && C == '\n')
+ NewArgv.push_back(nullptr);
+ Token.clear();
+ continue;
+ }
+
+ // This is a normal character. Append it.
+ Token.push_back(C);
+ }
+
+ // Append the last token after hitting EOF with no whitespace.
+ if (!Token.empty())
+ NewArgv.push_back(Saver.save(StringRef(Token)).data());
+}
+
+/// 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.
+static size_t parseBackslash(StringRef Src, size_t I, SmallString<128> &Token) {
+ size_t E = Src.size();
+ int BackslashCount = 0;
+ // Skip the backslashes.
+ do {
+ ++I;
+ ++BackslashCount;
+ } while (I != E && Src[I] == '\\');
+
+ bool FollowedByDoubleQuote = (I != E && Src[I] == '"');
+ if (FollowedByDoubleQuote) {
+ Token.append(BackslashCount / 2, '\\');
+ if (BackslashCount % 2 == 0)
+ return I - 1;
+ Token.push_back('"');
+ return I;
+ }
+ Token.append(BackslashCount, '\\');
+ return I - 1;
+}
+
+// Windows treats whitespace, double quotes, and backslashes specially.
+static bool isWindowsSpecialChar(char C) {
+ return isWhitespaceOrNull(C) || C == '\\' || C == '\"';
+}
+
+// Windows tokenization implementation. The implementation is designed to be
+// inlined and specialized for the two user entry points.
+static inline void
+tokenizeWindowsCommandLineImpl(StringRef Src, StringSaver &Saver,
+ function_ref<void(StringRef)> AddToken,
+ bool AlwaysCopy, function_ref<void()> MarkEOL) {
+ SmallString<128> Token;
+
+ // Try to do as much work inside the state machine as possible.
+ enum { INIT, UNQUOTED, QUOTED } State = INIT;
+ for (size_t I = 0, E = Src.size(); I < E; ++I) {
+ switch (State) {
+ case INIT: {
+ assert(Token.empty() && "token should be empty in initial state");
+ // Eat whitespace before a token.
+ while (I < E && isWhitespaceOrNull(Src[I])) {
+ if (Src[I] == '\n')
+ MarkEOL();
+ ++I;
+ }
+ // Stop if this was trailing whitespace.
+ if (I >= E)
+ break;
+ size_t Start = I;
+ while (I < E && !isWindowsSpecialChar(Src[I]))
+ ++I;
+ StringRef NormalChars = Src.slice(Start, I);
+ if (I >= E || isWhitespaceOrNull(Src[I])) {
+ // No special characters: slice out the substring and start the next
+ // token. Copy the string if the caller asks us to.
+ AddToken(AlwaysCopy ? Saver.save(NormalChars) : NormalChars);
+ if (I < E && Src[I] == '\n')
+ MarkEOL();
+ } else if (Src[I] == '\"') {
+ Token += NormalChars;
+ State = QUOTED;
+ } else if (Src[I] == '\\') {
+ Token += NormalChars;
+ I = parseBackslash(Src, I, Token);
+ State = UNQUOTED;
+ } else {
+ llvm_unreachable("unexpected special character");
+ }
+ break;
+ }
+
+ case UNQUOTED:
+ if (isWhitespaceOrNull(Src[I])) {
+ // Whitespace means the end of the token. If we are in this state, the
+ // token must have contained a special character, so we must copy the
+ // token.
+ AddToken(Saver.save(Token.str()));
+ Token.clear();
+ if (Src[I] == '\n')
+ MarkEOL();
+ State = INIT;
+ } else if (Src[I] == '\"') {
+ State = QUOTED;
+ } else if (Src[I] == '\\') {
+ I = parseBackslash(Src, I, Token);
+ } else {
+ Token.push_back(Src[I]);
+ }
+ break;
+
+ case QUOTED:
+ if (Src[I] == '\"') {
+ if (I < (E - 1) && Src[I + 1] == '"') {
+ // Consecutive double-quotes inside a quoted string implies one
+ // double-quote.
+ Token.push_back('"');
+ ++I;
+ } else {
+ // Otherwise, end the quoted portion and return to the unquoted state.
+ State = UNQUOTED;
+ }
+ } else if (Src[I] == '\\') {
+ I = parseBackslash(Src, I, Token);
+ } else {
+ Token.push_back(Src[I]);
+ }
+ break;
+ }
+ }
+
+ if (State == UNQUOTED)
+ AddToken(Saver.save(Token.str()));
+}
+
+void cl::TokenizeWindowsCommandLine(StringRef Src, StringSaver &Saver,
+ SmallVectorImpl<const char *> &NewArgv,
+ bool MarkEOLs) {
+ auto AddToken = [&](StringRef Tok) { NewArgv.push_back(Tok.data()); };
+ auto OnEOL = [&]() {
+ if (MarkEOLs)
+ NewArgv.push_back(nullptr);
+ };
+ tokenizeWindowsCommandLineImpl(Src, Saver, AddToken,
+ /*AlwaysCopy=*/true, OnEOL);
+}
+
+void cl::TokenizeWindowsCommandLineNoCopy(StringRef Src, StringSaver &Saver,
+ SmallVectorImpl<StringRef> &NewArgv) {
+ auto AddToken = [&](StringRef Tok) { NewArgv.push_back(Tok); };
+ auto OnEOL = []() {};
+ tokenizeWindowsCommandLineImpl(Src, Saver, AddToken, /*AlwaysCopy=*/false,
+ OnEOL);
+}
+
+void cl::tokenizeConfigFile(StringRef Source, StringSaver &Saver,
+ SmallVectorImpl<const char *> &NewArgv,
+ bool MarkEOLs) {
+ for (const char *Cur = Source.begin(); Cur != Source.end();) {
+ SmallString<128> Line;
+ // Check for comment line.
+ if (isWhitespace(*Cur)) {
+ while (Cur != Source.end() && isWhitespace(*Cur))
+ ++Cur;
+ continue;
+ }
+ if (*Cur == '#') {
+ while (Cur != Source.end() && *Cur != '\n')
+ ++Cur;
+ continue;
+ }
+ // Find end of the current line.
+ const char *Start = Cur;
+ for (const char *End = Source.end(); Cur != End; ++Cur) {
+ if (*Cur == '\\') {
+ if (Cur + 1 != End) {
+ ++Cur;
+ if (*Cur == '\n' ||
+ (*Cur == '\r' && (Cur + 1 != End) && Cur[1] == '\n')) {
+ Line.append(Start, Cur - 1);
+ if (*Cur == '\r')
+ ++Cur;
+ Start = Cur + 1;
+ }
+ }
+ } else if (*Cur == '\n')
+ break;
+ }
+ // Tokenize line.
+ Line.append(Start, Cur);
+ cl::TokenizeGNUCommandLine(Line, Saver, NewArgv, MarkEOLs);
+ }
+}
+
+// It is called byte order marker but the UTF-8 BOM is actually not affected
+// by the host system's endianness.
+static bool hasUTF8ByteOrderMark(ArrayRef<char> S) {
+ return (S.size() >= 3 && S[0] == '\xef' && S[1] == '\xbb' && S[2] == '\xbf');
+}
+
+// FName must be an absolute path.
+static llvm::Error ExpandResponseFile(
+ StringRef FName, StringSaver &Saver, TokenizerCallback Tokenizer,
+ SmallVectorImpl<const char *> &NewArgv, bool MarkEOLs, bool RelativeNames,
+ llvm::vfs::FileSystem &FS) {
+ assert(sys::path::is_absolute(FName));
+ llvm::ErrorOr<std::unique_ptr<MemoryBuffer>> MemBufOrErr =
+ FS.getBufferForFile(FName);
+ if (!MemBufOrErr)
+ return llvm::errorCodeToError(MemBufOrErr.getError());
+ MemoryBuffer &MemBuf = *MemBufOrErr.get();
+ StringRef Str(MemBuf.getBufferStart(), MemBuf.getBufferSize());
+
+ // If we have a UTF-16 byte order mark, convert to UTF-8 for parsing.
+ ArrayRef<char> BufRef(MemBuf.getBufferStart(), MemBuf.getBufferEnd());
+ std::string UTF8Buf;
+ if (hasUTF16ByteOrderMark(BufRef)) {
+ if (!convertUTF16ToUTF8String(BufRef, UTF8Buf))
+ return llvm::createStringError(std::errc::illegal_byte_sequence,
+ "Could not convert UTF16 to UTF8");
+ Str = StringRef(UTF8Buf);
+ }
+ // If we see UTF-8 BOM sequence at the beginning of a file, we shall remove
+ // these bytes before parsing.
+ // Reference: http://en.wikipedia.org/wiki/UTF-8#Byte_order_mark
+ else if (hasUTF8ByteOrderMark(BufRef))
+ Str = StringRef(BufRef.data() + 3, BufRef.size() - 3);
+
+ // Tokenize the contents into NewArgv.
+ Tokenizer(Str, Saver, NewArgv, MarkEOLs);
+
+ if (!RelativeNames)
+ return Error::success();
+ llvm::StringRef BasePath = llvm::sys::path::parent_path(FName);
+ // If names of nested response files should be resolved relative to including
+ // file, replace the included response file names with their full paths
+ // obtained by required resolution.
+ for (auto &Arg : NewArgv) {
+ // Skip non-rsp file arguments.
+ if (!Arg || Arg[0] != '@')
+ continue;
+
+ StringRef FileName(Arg + 1);
+ // Skip if non-relative.
+ if (!llvm::sys::path::is_relative(FileName))
+ continue;
+
+ SmallString<128> ResponseFile;
+ ResponseFile.push_back('@');
+ ResponseFile.append(BasePath);
+ llvm::sys::path::append(ResponseFile, FileName);
+ Arg = Saver.save(ResponseFile.c_str()).data();
+ }
+ return Error::success();
+}
+
+/// Expand response files on a command line recursively using the given
+/// StringSaver and tokenization strategy.
+bool cl::ExpandResponseFiles(StringSaver &Saver, TokenizerCallback Tokenizer,
+ SmallVectorImpl<const char *> &Argv, bool MarkEOLs,
+ bool RelativeNames, llvm::vfs::FileSystem &FS,
+ llvm::Optional<llvm::StringRef> CurrentDir) {
+ bool AllExpanded = true;
+ struct ResponseFileRecord {
+ std::string File;
+ size_t End;
+ };
+
+ // To detect recursive response files, we maintain a stack of files and the
+ // position of the last argument in the file. This position is updated
+ // dynamically as we recursively expand files.
+ SmallVector<ResponseFileRecord, 3> FileStack;
+
+ // Push a dummy entry that represents the initial command line, removing
+ // the need to check for an empty list.
+ FileStack.push_back({"", Argv.size()});
+
+ // Don't cache Argv.size() because it can change.
+ for (unsigned I = 0; I != Argv.size();) {
+ while (I == FileStack.back().End) {
+ // Passing the end of a file's argument list, so we can remove it from the
+ // stack.
+ FileStack.pop_back();
+ }
+
+ const char *Arg = Argv[I];
+ // Check if it is an EOL marker
+ if (Arg == nullptr) {
+ ++I;
+ continue;
+ }
+
+ if (Arg[0] != '@') {
+ ++I;
+ continue;
+ }
+
+ const char *FName = Arg + 1;
+ // Note that CurrentDir is only used for top-level rsp files, the rest will
+ // always have an absolute path deduced from the containing file.
+ SmallString<128> CurrDir;
+ if (llvm::sys::path::is_relative(FName)) {
+ if (!CurrentDir)
+ llvm::sys::fs::current_path(CurrDir);
+ else
+ CurrDir = *CurrentDir;
+ llvm::sys::path::append(CurrDir, FName);
+ FName = CurrDir.c_str();
+ }
+ auto IsEquivalent = [FName, &FS](const ResponseFileRecord &RFile) {
+ llvm::ErrorOr<llvm::vfs::Status> LHS = FS.status(FName);
+ if (!LHS) {
+ // TODO: The error should be propagated up the stack.
+ llvm::consumeError(llvm::errorCodeToError(LHS.getError()));
+ return false;
+ }
+ llvm::ErrorOr<llvm::vfs::Status> RHS = FS.status(RFile.File);
+ if (!RHS) {
+ // TODO: The error should be propagated up the stack.
+ llvm::consumeError(llvm::errorCodeToError(RHS.getError()));
+ return false;
+ }
+ return LHS->equivalent(*RHS);
+ };
+
+ // Check for recursive response files.
+ if (any_of(drop_begin(FileStack), IsEquivalent)) {
+ // This file is recursive, so we leave it in the argument stream and
+ // move on.
+ AllExpanded = false;
+ ++I;
+ continue;
+ }
+
+ // Replace this response file argument with the tokenization of its
+ // contents. Nested response files are expanded in subsequent iterations.
+ SmallVector<const char *, 0> ExpandedArgv;
+ if (llvm::Error Err =
+ ExpandResponseFile(FName, Saver, Tokenizer, ExpandedArgv, MarkEOLs,
+ RelativeNames, FS)) {
+ // We couldn't read this file, so we leave it in the argument stream and
+ // move on.
+ // TODO: The error should be propagated up the stack.
+ llvm::consumeError(std::move(Err));
+ AllExpanded = false;
+ ++I;
+ continue;
+ }
+
+ for (ResponseFileRecord &Record : FileStack) {
+ // Increase the end of all active records by the number of newly expanded
+ // arguments, minus the response file itself.
+ Record.End += ExpandedArgv.size() - 1;
+ }
+
+ FileStack.push_back({FName, I + ExpandedArgv.size()});
+ Argv.erase(Argv.begin() + I);
+ Argv.insert(Argv.begin() + I, ExpandedArgv.begin(), ExpandedArgv.end());
+ }
+
+ // If successful, the top of the file stack will mark the end of the Argv
+ // stream. A failure here indicates a bug in the stack popping logic above.
+ // Note that FileStack may have more than one element at this point because we
+ // don't have a chance to pop the stack when encountering recursive files at
+ // the end of the stream, so seeing that doesn't indicate a bug.
+ assert(FileStack.size() > 0 && Argv.size() == FileStack.back().End);
+ return AllExpanded;
+}
+
+bool cl::expandResponseFiles(int Argc, const char *const *Argv,
+ const char *EnvVar, StringSaver &Saver,
+ SmallVectorImpl<const char *> &NewArgv) {
+ auto Tokenize = Triple(sys::getProcessTriple()).isOSWindows()
+ ? cl::TokenizeWindowsCommandLine
+ : cl::TokenizeGNUCommandLine;
+ // The environment variable specifies initial options.
+ if (EnvVar)
+ if (llvm::Optional<std::string> EnvValue = sys::Process::GetEnv(EnvVar))
+ Tokenize(*EnvValue, Saver, NewArgv, /*MarkEOLs=*/false);
+
+ // Command line options can override the environment variable.
+ NewArgv.append(Argv + 1, Argv + Argc);
+ return ExpandResponseFiles(Saver, Tokenize, NewArgv);
+}
+
+bool cl::readConfigFile(StringRef CfgFile, StringSaver &Saver,
+ SmallVectorImpl<const char *> &Argv) {
+ SmallString<128> AbsPath;
+ if (sys::path::is_relative(CfgFile)) {
+ llvm::sys::fs::current_path(AbsPath);
+ llvm::sys::path::append(AbsPath, CfgFile);
+ CfgFile = AbsPath.str();
+ }
+ if (llvm::Error Err =
+ ExpandResponseFile(CfgFile, Saver, cl::tokenizeConfigFile, Argv,
+ /*MarkEOLs*/ false, /*RelativeNames*/ true,
+ *llvm::vfs::getRealFileSystem())) {
+ // TODO: The error should be propagated up the stack.
+ llvm::consumeError(std::move(Err));
+ return false;
+ }
+ return ExpandResponseFiles(Saver, cl::tokenizeConfigFile, Argv,
+ /*MarkEOLs*/ false, /*RelativeNames*/ true);
+}
+
+bool cl::ParseCommandLineOptions(int argc, const char *const *argv,
+ StringRef Overview, raw_ostream *Errs,
+ const char *EnvVar,
+ bool LongOptionsUseDoubleDash) {
+ SmallVector<const char *, 20> NewArgv;
+ BumpPtrAllocator A;
+ StringSaver Saver(A);
+ NewArgv.push_back(argv[0]);
+
+ // Parse options from environment variable.
+ if (EnvVar) {
+ if (llvm::Optional<std::string> EnvValue =
+ sys::Process::GetEnv(StringRef(EnvVar)))
+ TokenizeGNUCommandLine(*EnvValue, Saver, NewArgv);
+ }
+
+ // Append options from command line.
+ for (int I = 1; I < argc; ++I)
+ NewArgv.push_back(argv[I]);
+ int NewArgc = static_cast<int>(NewArgv.size());
+
+ // Parse all options.
+ return GlobalParser->ParseCommandLineOptions(NewArgc, &NewArgv[0], Overview,
+ Errs, LongOptionsUseDoubleDash);
+}
+
+void CommandLineParser::ResetAllOptionOccurrences() {
+ // So that we can parse different command lines multiple times in succession
+ // we reset all option values to look like they have never been seen before.
+ for (auto SC : RegisteredSubCommands) {
+ for (auto &O : SC->OptionsMap)
+ O.second->reset();
+ }
+}
+
+bool CommandLineParser::ParseCommandLineOptions(int argc,
+ const char *const *argv,
+ StringRef Overview,
+ raw_ostream *Errs,
+ bool LongOptionsUseDoubleDash) {
+ assert(hasOptions() && "No options specified!");
+
+ // Expand response files.
+ SmallVector<const char *, 20> newArgv(argv, argv + argc);
+ BumpPtrAllocator A;
+ StringSaver Saver(A);
+ ExpandResponseFiles(Saver,
+ Triple(sys::getProcessTriple()).isOSWindows() ?
+ cl::TokenizeWindowsCommandLine : cl::TokenizeGNUCommandLine,
+ newArgv);
+ argv = &newArgv[0];
+ argc = static_cast<int>(newArgv.size());
+
+ // Copy the program name into ProgName, making sure not to overflow it.
+ ProgramName = std::string(sys::path::filename(StringRef(argv[0])));
+
+ ProgramOverview = Overview;
+ bool IgnoreErrors = Errs;
+ if (!Errs)
+ Errs = &errs();
+ bool ErrorParsing = false;
+
+ // Check out the positional arguments to collect information about them.
+ unsigned NumPositionalRequired = 0;
+
+ // Determine whether or not there are an unlimited number of positionals
+ bool HasUnlimitedPositionals = false;
+
+ int FirstArg = 1;
+ SubCommand *ChosenSubCommand = &*TopLevelSubCommand;
+ if (argc >= 2 && argv[FirstArg][0] != '-') {
+ // If the first argument specifies a valid subcommand, start processing
+ // options from the second argument.
+ ChosenSubCommand = LookupSubCommand(StringRef(argv[FirstArg]));
+ if (ChosenSubCommand != &*TopLevelSubCommand)
+ FirstArg = 2;
+ }
+ GlobalParser->ActiveSubCommand = ChosenSubCommand;
+
+ assert(ChosenSubCommand);
+ auto &ConsumeAfterOpt = ChosenSubCommand->ConsumeAfterOpt;
+ auto &PositionalOpts = ChosenSubCommand->PositionalOpts;
+ auto &SinkOpts = ChosenSubCommand->SinkOpts;
+ auto &OptionsMap = ChosenSubCommand->OptionsMap;
+
+ for (auto O: DefaultOptions) {
+ addOption(O, true);
+ }
+
+ if (ConsumeAfterOpt) {
+ assert(PositionalOpts.size() > 0 &&
+ "Cannot specify cl::ConsumeAfter without a positional argument!");
+ }
+ if (!PositionalOpts.empty()) {
+
+ // Calculate how many positional values are _required_.
+ bool UnboundedFound = false;
+ for (size_t i = 0, e = PositionalOpts.size(); i != e; ++i) {
+ Option *Opt = PositionalOpts[i];
+ if (RequiresValue(Opt))
+ ++NumPositionalRequired;
+ else if (ConsumeAfterOpt) {
+ // ConsumeAfter cannot be combined with "optional" positional options
+ // unless there is only one positional argument...
+ if (PositionalOpts.size() > 1) {
+ if (!IgnoreErrors)
+ Opt->error("error - this positional option will never be matched, "
+ "because it does not Require a value, and a "
+ "cl::ConsumeAfter option is active!");
+ ErrorParsing = true;
+ }
+ } else if (UnboundedFound && !Opt->hasArgStr()) {
+ // This option does not "require" a value... Make sure this option is
+ // not specified after an option that eats all extra arguments, or this
+ // one will never get any!
+ //
+ if (!IgnoreErrors)
+ Opt->error("error - option can never match, because "
+ "another positional argument will match an "
+ "unbounded number of values, and this option"
+ " does not require a value!");
+ *Errs << ProgramName << ": CommandLine Error: Option '" << Opt->ArgStr
+ << "' is all messed up!\n";
+ *Errs << PositionalOpts.size();
+ ErrorParsing = true;
+ }
+ UnboundedFound |= EatsUnboundedNumberOfValues(Opt);
+ }
+ HasUnlimitedPositionals = UnboundedFound || ConsumeAfterOpt;
+ }
+
+ // PositionalVals - A vector of "positional" arguments we accumulate into
+ // the process at the end.
+ //
+ SmallVector<std::pair<StringRef, unsigned>, 4> PositionalVals;
+
+ // If the program has named positional arguments, and the name has been run
+ // across, keep track of which positional argument was named. Otherwise put
+ // the positional args into the PositionalVals list...
+ Option *ActivePositionalArg = nullptr;
+
+ // Loop over all of the arguments... processing them.
+ bool DashDashFound = false; // Have we read '--'?
+ for (int i = FirstArg; i < argc; ++i) {
+ Option *Handler = nullptr;
+ Option *NearestHandler = nullptr;
+ std::string NearestHandlerString;
+ StringRef Value;
+ StringRef ArgName = "";
+ bool HaveDoubleDash = false;
+
+ // Check to see if this is a positional argument. This argument is
+ // considered to be positional if it doesn't start with '-', if it is "-"
+ // itself, or if we have seen "--" already.
+ //
+ if (argv[i][0] != '-' || argv[i][1] == 0 || DashDashFound) {
+ // Positional argument!
+ if (ActivePositionalArg) {
+ ProvidePositionalOption(ActivePositionalArg, StringRef(argv[i]), i);
+ continue; // We are done!
+ }
+
+ if (!PositionalOpts.empty()) {
+ PositionalVals.push_back(std::make_pair(StringRef(argv[i]), i));
+
+ // All of the positional arguments have been fulfulled, give the rest to
+ // the consume after option... if it's specified...
+ //
+ if (PositionalVals.size() >= NumPositionalRequired && ConsumeAfterOpt) {
+ for (++i; i < argc; ++i)
+ PositionalVals.push_back(std::make_pair(StringRef(argv[i]), i));
+ break; // Handle outside of the argument processing loop...
+ }
+
+ // Delay processing positional arguments until the end...
+ continue;
+ }
+ } else if (argv[i][0] == '-' && argv[i][1] == '-' && argv[i][2] == 0 &&
+ !DashDashFound) {
+ DashDashFound = true; // This is the mythical "--"?
+ continue; // Don't try to process it as an argument itself.
+ } else if (ActivePositionalArg &&
+ (ActivePositionalArg->getMiscFlags() & PositionalEatsArgs)) {
+ // If there is a positional argument eating options, check to see if this
+ // option is another positional argument. If so, treat it as an argument,
+ // otherwise feed it to the eating positional.
+ ArgName = StringRef(argv[i] + 1);
+ // Eat second dash.
+ if (!ArgName.empty() && ArgName[0] == '-') {
+ HaveDoubleDash = true;
+ ArgName = ArgName.substr(1);
+ }
+
+ Handler = LookupLongOption(*ChosenSubCommand, ArgName, Value,
+ LongOptionsUseDoubleDash, HaveDoubleDash);
+ if (!Handler || Handler->getFormattingFlag() != cl::Positional) {
+ ProvidePositionalOption(ActivePositionalArg, StringRef(argv[i]), i);
+ continue; // We are done!
+ }
+ } else { // We start with a '-', must be an argument.
+ ArgName = StringRef(argv[i] + 1);
+ // Eat second dash.
+ if (!ArgName.empty() && ArgName[0] == '-') {
+ HaveDoubleDash = true;
+ ArgName = ArgName.substr(1);
+ }
+
+ Handler = LookupLongOption(*ChosenSubCommand, ArgName, Value,
+ LongOptionsUseDoubleDash, HaveDoubleDash);
+
+ // Check to see if this "option" is really a prefixed or grouped argument.
+ if (!Handler && !(LongOptionsUseDoubleDash && HaveDoubleDash))
+ Handler = HandlePrefixedOrGroupedOption(ArgName, Value, ErrorParsing,
+ OptionsMap);
+
+ // Otherwise, look for the closest available option to report to the user
+ // in the upcoming error.
+ if (!Handler && SinkOpts.empty())
+ NearestHandler =
+ LookupNearestOption(ArgName, OptionsMap, NearestHandlerString);
+ }
+
+ if (!Handler) {
+ if (SinkOpts.empty()) {
+ *Errs << ProgramName << ": Unknown command line argument '" << argv[i]
+ << "'. Try: '" << argv[0] << " --help'\n";
+
+ if (NearestHandler) {
+ // If we know a near match, report it as well.
+ *Errs << ProgramName << ": Did you mean '"
+ << PrintArg(NearestHandlerString, 0) << "'?\n";
+ }
+
+ ErrorParsing = true;
+ } else {
+ for (SmallVectorImpl<Option *>::iterator I = SinkOpts.begin(),
+ E = SinkOpts.end();
+ I != E; ++I)
+ (*I)->addOccurrence(i, "", StringRef(argv[i]));
+ }
+ continue;
+ }
+
+ // If this is a named positional argument, just remember that it is the
+ // active one...
+ if (Handler->getFormattingFlag() == cl::Positional) {
+ if ((Handler->getMiscFlags() & PositionalEatsArgs) && !Value.empty()) {
+ Handler->error("This argument does not take a value.\n"
+ "\tInstead, it consumes any positional arguments until "
+ "the next recognized option.", *Errs);
+ ErrorParsing = true;
+ }
+ ActivePositionalArg = Handler;
+ }
+ else
+ ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i);
+ }
+
+ // Check and handle positional arguments now...
+ if (NumPositionalRequired > PositionalVals.size()) {
+ *Errs << ProgramName
+ << ": Not enough positional command line arguments specified!\n"
+ << "Must specify at least " << NumPositionalRequired
+ << " positional argument" << (NumPositionalRequired > 1 ? "s" : "")
+ << ": See: " << argv[0] << " --help\n";
+
+ ErrorParsing = true;
+ } else if (!HasUnlimitedPositionals &&
+ PositionalVals.size() > PositionalOpts.size()) {
+ *Errs << ProgramName << ": Too many positional arguments specified!\n"
+ << "Can specify at most " << PositionalOpts.size()
+ << " positional arguments: See: " << argv[0] << " --help\n";
+ ErrorParsing = true;
+
+ } else if (!ConsumeAfterOpt) {
+ // Positional args have already been handled if ConsumeAfter is specified.
+ unsigned ValNo = 0, NumVals = static_cast<unsigned>(PositionalVals.size());
+ for (size_t i = 0, e = PositionalOpts.size(); i != e; ++i) {
+ if (RequiresValue(PositionalOpts[i])) {
+ ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
+ --NumPositionalRequired; // We fulfilled our duty...
+ }
+
+ // If we _can_ give this option more arguments, do so now, as long as we
+ // do not give it values that others need. 'Done' controls whether the
+ // option even _WANTS_ any more.
+ //
+ bool Done = PositionalOpts[i]->getNumOccurrencesFlag() == cl::Required;
+ while (NumVals - ValNo > NumPositionalRequired && !Done) {
+ switch (PositionalOpts[i]->getNumOccurrencesFlag()) {
+ case cl::Optional:
+ Done = true; // Optional arguments want _at most_ one value
+ LLVM_FALLTHROUGH;
+ case cl::ZeroOrMore: // Zero or more will take all they can get...
+ case cl::OneOrMore: // One or more will take all they can get...
+ ProvidePositionalOption(PositionalOpts[i],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
+ break;
+ default:
+ llvm_unreachable("Internal error, unexpected NumOccurrences flag in "
+ "positional argument processing!");
+ }
+ }
+ }
+ } else {
+ assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size());
+ unsigned ValNo = 0;
+ for (size_t J = 0, E = PositionalOpts.size(); J != E; ++J)
+ if (RequiresValue(PositionalOpts[J])) {
+ ErrorParsing |= ProvidePositionalOption(PositionalOpts[J],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
+ }
+
+ // Handle the case where there is just one positional option, and it's
+ // optional. In this case, we want to give JUST THE FIRST option to the
+ // positional option and keep the rest for the consume after. The above
+ // loop would have assigned no values to positional options in this case.
+ //
+ if (PositionalOpts.size() == 1 && ValNo == 0 && !PositionalVals.empty()) {
+ ErrorParsing |= ProvidePositionalOption(PositionalOpts[0],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
+ }
+
+ // Handle over all of the rest of the arguments to the
+ // cl::ConsumeAfter command line option...
+ for (; ValNo != PositionalVals.size(); ++ValNo)
+ ErrorParsing |=
+ ProvidePositionalOption(ConsumeAfterOpt, PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ }
+
+ // Loop over args and make sure all required args are specified!
+ for (const auto &Opt : OptionsMap) {
+ switch (Opt.second->getNumOccurrencesFlag()) {
+ case Required:
+ case OneOrMore:
+ if (Opt.second->getNumOccurrences() == 0) {
+ Opt.second->error("must be specified at least once!");
+ ErrorParsing = true;
+ }
+ LLVM_FALLTHROUGH;
+ default:
+ break;
+ }
+ }
+
+ // Now that we know if -debug is specified, we can use it.
+ // Note that if ReadResponseFiles == true, this must be done before the
+ // memory allocated for the expanded command line is free()d below.
+ LLVM_DEBUG(dbgs() << "Args: ";
+ for (int i = 0; i < argc; ++i) dbgs() << argv[i] << ' ';
+ dbgs() << '\n';);
+
+ // Free all of the memory allocated to the map. Command line options may only
+ // be processed once!
+ MoreHelp.clear();
+
+ // If we had an error processing our arguments, don't let the program execute
+ if (ErrorParsing) {
+ if (!IgnoreErrors)
+ exit(1);
+ return false;
+ }
+ return true;
+}
+
+//===----------------------------------------------------------------------===//
+// Option Base class implementation
+//
+
+bool Option::error(const Twine &Message, StringRef ArgName, raw_ostream &Errs) {
+ if (!ArgName.data())
+ ArgName = ArgStr;
+ if (ArgName.empty())
+ Errs << HelpStr; // Be nice for positional arguments
+ else
+ Errs << GlobalParser->ProgramName << ": for the " << PrintArg(ArgName, 0);
+
+ Errs << " option: " << Message << "\n";
+ return true;
+}
+
+bool Option::addOccurrence(unsigned pos, StringRef ArgName, StringRef Value,
+ bool MultiArg) {
+ if (!MultiArg)
+ NumOccurrences++; // Increment the number of times we have been seen
+
+ switch (getNumOccurrencesFlag()) {
+ case Optional:
+ if (NumOccurrences > 1)
+ return error("may only occur zero or one times!", ArgName);
+ break;
+ case Required:
+ if (NumOccurrences > 1)
+ return error("must occur exactly one time!", ArgName);
+ LLVM_FALLTHROUGH;
+ case OneOrMore:
+ case ZeroOrMore:
+ case ConsumeAfter:
+ break;
+ }
+
+ return handleOccurrence(pos, ArgName, Value);
+}
+
+// getValueStr - Get the value description string, using "DefaultMsg" if nothing
+// has been specified yet.
+//
+static StringRef getValueStr(const Option &O, StringRef DefaultMsg) {
+ if (O.ValueStr.empty())
+ return DefaultMsg;
+ return O.ValueStr;
+}
+
+//===----------------------------------------------------------------------===//
+// cl::alias class implementation
+//
+
+// Return the width of the option tag for printing...
+size_t alias::getOptionWidth() const {
+ return argPlusPrefixesSize(ArgStr);
+}
+
+void Option::printHelpStr(StringRef HelpStr, size_t Indent,
+ size_t FirstLineIndentedBy) {
+ assert(Indent >= FirstLineIndentedBy);
+ std::pair<StringRef, StringRef> Split = HelpStr.split('\n');
+ outs().indent(Indent - FirstLineIndentedBy)
+ << ArgHelpPrefix << Split.first << "\n";
+ while (!Split.second.empty()) {
+ Split = Split.second.split('\n');
+ outs().indent(Indent) << Split.first << "\n";
+ }
+}
+
+void Option::printEnumValHelpStr(StringRef HelpStr, size_t BaseIndent,
+ size_t FirstLineIndentedBy) {
+ const StringRef ValHelpPrefix = " ";
+ assert(BaseIndent >= FirstLineIndentedBy);
+ std::pair<StringRef, StringRef> Split = HelpStr.split('\n');
+ outs().indent(BaseIndent - FirstLineIndentedBy)
+ << ArgHelpPrefix << ValHelpPrefix << Split.first << "\n";
+ while (!Split.second.empty()) {
+ Split = Split.second.split('\n');
+ outs().indent(BaseIndent + ValHelpPrefix.size()) << Split.first << "\n";
+ }
+}
+
+// Print out the option for the alias.
+void alias::printOptionInfo(size_t GlobalWidth) const {
+ outs() << PrintArg(ArgStr);
+ printHelpStr(HelpStr, GlobalWidth, argPlusPrefixesSize(ArgStr));
+}
+
+//===----------------------------------------------------------------------===//
+// Parser Implementation code...
+//
+
+// basic_parser implementation
+//
+
+// Return the width of the option tag for printing...
+size_t basic_parser_impl::getOptionWidth(const Option &O) const {
+ size_t Len = argPlusPrefixesSize(O.ArgStr);
+ auto ValName = getValueName();
+ if (!ValName.empty()) {
+ size_t FormattingLen = 3;
+ if (O.getMiscFlags() & PositionalEatsArgs)
+ FormattingLen = 6;
+ Len += getValueStr(O, ValName).size() + FormattingLen;
+ }
+
+ return Len;
+}
+
+// printOptionInfo - Print out information about this option. The
+// to-be-maintained width is specified.
+//
+void basic_parser_impl::printOptionInfo(const Option &O,
+ size_t GlobalWidth) const {
+ outs() << PrintArg(O.ArgStr);
+
+ auto ValName = getValueName();
+ if (!ValName.empty()) {
+ if (O.getMiscFlags() & PositionalEatsArgs) {
+ outs() << " <" << getValueStr(O, ValName) << ">...";
+ } else if (O.getValueExpectedFlag() == ValueOptional)
+ outs() << "[=<" << getValueStr(O, ValName) << ">]";
+ else
+ outs() << "=<" << getValueStr(O, ValName) << '>';
+ }
+
+ Option::printHelpStr(O.HelpStr, GlobalWidth, getOptionWidth(O));
+}
+
+void basic_parser_impl::printOptionName(const Option &O,
+ size_t GlobalWidth) const {
+ outs() << PrintArg(O.ArgStr);
+ outs().indent(GlobalWidth - O.ArgStr.size());
+}
+
+// parser<bool> implementation
+//
+bool parser<bool>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ bool &Value) {
+ if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
+ Arg == "1") {
+ Value = true;
+ return false;
+ }
+
+ if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
+ Value = false;
+ return false;
+ }
+ return O.error("'" + Arg +
+ "' is invalid value for boolean argument! Try 0 or 1");
+}
+
+// parser<boolOrDefault> implementation
+//
+bool parser<boolOrDefault>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ boolOrDefault &Value) {
+ if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
+ Arg == "1") {
+ Value = BOU_TRUE;
+ return false;
+ }
+ if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
+ Value = BOU_FALSE;
+ return false;
+ }
+
+ return O.error("'" + Arg +
+ "' is invalid value for boolean argument! Try 0 or 1");
+}
+
+// parser<int> implementation
+//
+bool parser<int>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ int &Value) {
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for integer argument!");
+ return false;
+}
+
+// parser<long> implementation
+//
+bool parser<long>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ long &Value) {
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for long argument!");
+ return false;
+}
+
+// parser<long long> implementation
+//
+bool parser<long long>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ long long &Value) {
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for llong argument!");
+ return false;
+}
+
+// parser<unsigned> implementation
+//
+bool parser<unsigned>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ unsigned &Value) {
+
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for uint argument!");
+ return false;
+}
+
+// parser<unsigned long> implementation
+//
+bool parser<unsigned long>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ unsigned long &Value) {
+
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for ulong argument!");
+ return false;
+}
+
+// parser<unsigned long long> implementation
+//
+bool parser<unsigned long long>::parse(Option &O, StringRef ArgName,
+ StringRef Arg,
+ unsigned long long &Value) {
+
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for ullong argument!");
+ return false;
+}
+
+// parser<double>/parser<float> implementation
+//
+static bool parseDouble(Option &O, StringRef Arg, double &Value) {
+ if (to_float(Arg, Value))
+ return false;
+ return O.error("'" + Arg + "' value invalid for floating point argument!");
+}
+
+bool parser<double>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ double &Val) {
+ return parseDouble(O, Arg, Val);
+}
+
+bool parser<float>::parse(Option &O, StringRef ArgName, StringRef Arg,
+ float &Val) {
+ double dVal;
+ if (parseDouble(O, Arg, dVal))
+ return true;
+ Val = (float)dVal;
+ return false;
+}
+
+// generic_parser_base implementation
+//
+
+// findOption - Return the option number corresponding to the specified
+// argument string. If the option is not found, getNumOptions() is returned.
+//
+unsigned generic_parser_base::findOption(StringRef Name) {
+ unsigned e = getNumOptions();
+
+ for (unsigned i = 0; i != e; ++i) {
+ if (getOption(i) == Name)
+ return i;
+ }
+ return e;
+}
+
+static StringRef EqValue = "=<value>";
+static StringRef EmptyOption = "<empty>";
+static StringRef OptionPrefix = " =";
+static size_t OptionPrefixesSize = OptionPrefix.size() + ArgHelpPrefix.size();
+
+static bool shouldPrintOption(StringRef Name, StringRef Description,
+ const Option &O) {
+ return O.getValueExpectedFlag() != ValueOptional || !Name.empty() ||
+ !Description.empty();
+}
+
+// Return the width of the option tag for printing...
+size_t generic_parser_base::getOptionWidth(const Option &O) const {
+ if (O.hasArgStr()) {
+ size_t Size =
+ argPlusPrefixesSize(O.ArgStr) + EqValue.size();
+ for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
+ StringRef Name = getOption(i);
+ if (!shouldPrintOption(Name, getDescription(i), O))
+ continue;
+ size_t NameSize = Name.empty() ? EmptyOption.size() : Name.size();
+ Size = std::max(Size, NameSize + OptionPrefixesSize);
+ }
+ return Size;
+ } else {
+ size_t BaseSize = 0;
+ for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
+ BaseSize = std::max(BaseSize, getOption(i).size() + 8);
+ return BaseSize;
+ }
+}
+
+// printOptionInfo - Print out information about this option. The
+// to-be-maintained width is specified.
+//
+void generic_parser_base::printOptionInfo(const Option &O,
+ size_t GlobalWidth) const {
+ if (O.hasArgStr()) {
+ // When the value is optional, first print a line just describing the
+ // option without values.
+ if (O.getValueExpectedFlag() == ValueOptional) {
+ for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
+ if (getOption(i).empty()) {
+ outs() << PrintArg(O.ArgStr);
+ Option::printHelpStr(O.HelpStr, GlobalWidth,
+ argPlusPrefixesSize(O.ArgStr));
+ break;
+ }
+ }
+ }
+
+ outs() << PrintArg(O.ArgStr) << EqValue;
+ Option::printHelpStr(O.HelpStr, GlobalWidth,
+ EqValue.size() +
+ argPlusPrefixesSize(O.ArgStr));
+ for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
+ StringRef OptionName = getOption(i);
+ StringRef Description = getDescription(i);
+ if (!shouldPrintOption(OptionName, Description, O))
+ continue;
+ size_t FirstLineIndent = OptionName.size() + OptionPrefixesSize;
+ outs() << OptionPrefix << OptionName;
+ if (OptionName.empty()) {
+ outs() << EmptyOption;
+ assert(FirstLineIndent >= EmptyOption.size());
+ FirstLineIndent += EmptyOption.size();
+ }
+ if (!Description.empty())
+ Option::printEnumValHelpStr(Description, GlobalWidth, FirstLineIndent);
+ else
+ outs() << '\n';
+ }
+ } else {
+ if (!O.HelpStr.empty())
+ outs() << " " << O.HelpStr << '\n';
+ for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
+ StringRef Option = getOption(i);
+ outs() << " " << PrintArg(Option);
+ Option::printHelpStr(getDescription(i), GlobalWidth, Option.size() + 8);
+ }
+ }
+}
+
+static const size_t MaxOptWidth = 8; // arbitrary spacing for printOptionDiff
+
+// printGenericOptionDiff - Print the value of this option and it's default.
+//
+// "Generic" options have each value mapped to a name.
+void generic_parser_base::printGenericOptionDiff(
+ const Option &O, const GenericOptionValue &Value,
+ const GenericOptionValue &Default, size_t GlobalWidth) const {
+ outs() << " " << PrintArg(O.ArgStr);
+ outs().indent(GlobalWidth - O.ArgStr.size());
+
+ unsigned NumOpts = getNumOptions();
+ for (unsigned i = 0; i != NumOpts; ++i) {
+ if (Value.compare(getOptionValue(i)))
+ continue;
+
+ outs() << "= " << getOption(i);
+ size_t L = getOption(i).size();
+ size_t NumSpaces = MaxOptWidth > L ? MaxOptWidth - L : 0;
+ outs().indent(NumSpaces) << " (default: ";
+ for (unsigned j = 0; j != NumOpts; ++j) {
+ if (Default.compare(getOptionValue(j)))
+ continue;
+ outs() << getOption(j);
+ break;
+ }
+ outs() << ")\n";
+ return;
+ }
+ outs() << "= *unknown option value*\n";
+}
+
+// printOptionDiff - Specializations for printing basic value types.
+//
+#define PRINT_OPT_DIFF(T) \
+ 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"; \
+ }
+
+PRINT_OPT_DIFF(bool)
+PRINT_OPT_DIFF(boolOrDefault)
+PRINT_OPT_DIFF(int)
+PRINT_OPT_DIFF(long)
+PRINT_OPT_DIFF(long long)
+PRINT_OPT_DIFF(unsigned)
+PRINT_OPT_DIFF(unsigned long)
+PRINT_OPT_DIFF(unsigned long long)
+PRINT_OPT_DIFF(double)
+PRINT_OPT_DIFF(float)
+PRINT_OPT_DIFF(char)
+
+void parser<std::string>::printOptionDiff(const Option &O, StringRef V,
+ const OptionValue<std::string> &D,
+ size_t GlobalWidth) const {
+ printOptionName(O, GlobalWidth);
+ outs() << "= " << V;
+ size_t NumSpaces = MaxOptWidth > V.size() ? MaxOptWidth - V.size() : 0;
+ outs().indent(NumSpaces) << " (default: ";
+ if (D.hasValue())
+ outs() << D.getValue();
+ else
+ outs() << "*no default*";
+ outs() << ")\n";
+}
+
+// Print a placeholder for options that don't yet support printOptionDiff().
+void basic_parser_impl::printOptionNoValue(const Option &O,
+ size_t GlobalWidth) const {
+ printOptionName(O, GlobalWidth);
+ outs() << "= *cannot print option value*\n";
+}
+
+//===----------------------------------------------------------------------===//
+// -help and -help-hidden option implementation
+//
+
+static int OptNameCompare(const std::pair<const char *, Option *> *LHS,
+ const std::pair<const char *, Option *> *RHS) {
+ return strcmp(LHS->first, RHS->first);
+}
+
+static int SubNameCompare(const std::pair<const char *, SubCommand *> *LHS,
+ const std::pair<const char *, SubCommand *> *RHS) {
+ return strcmp(LHS->first, RHS->first);
+}
+
+// Copy Options into a vector so we can sort them as we like.
+static void sortOpts(StringMap<Option *> &OptMap,
+ SmallVectorImpl<std::pair<const char *, Option *>> &Opts,
+ bool ShowHidden) {
+ SmallPtrSet<Option *, 32> OptionSet; // Duplicate option detection.
+
+ for (StringMap<Option *>::iterator I = OptMap.begin(), E = OptMap.end();
+ I != E; ++I) {
+ // Ignore really-hidden options.
+ if (I->second->getOptionHiddenFlag() == ReallyHidden)
+ continue;
+
+ // Unless showhidden is set, ignore hidden flags.
+ if (I->second->getOptionHiddenFlag() == Hidden && !ShowHidden)
+ continue;
+
+ // If we've already seen this option, don't add it to the list again.
+ if (!OptionSet.insert(I->second).second)
+ continue;
+
+ Opts.push_back(
+ std::pair<const char *, Option *>(I->getKey().data(), I->second));
+ }
+
+ // Sort the options list alphabetically.
+ array_pod_sort(Opts.begin(), Opts.end(), OptNameCompare);
+}
+
+static void
+sortSubCommands(const SmallPtrSetImpl<SubCommand *> &SubMap,
+ SmallVectorImpl<std::pair<const char *, SubCommand *>> &Subs) {
+ for (auto *S : SubMap) {
+ if (S->getName().empty())
+ continue;
+ Subs.push_back(std::make_pair(S->getName().data(), S));
+ }
+ array_pod_sort(Subs.begin(), Subs.end(), SubNameCompare);
+}
+
+namespace {
+
+class HelpPrinter {
+protected:
+ const bool ShowHidden;
+ typedef SmallVector<std::pair<const char *, Option *>, 128>
+ StrOptionPairVector;
+ typedef SmallVector<std::pair<const char *, SubCommand *>, 128>
+ StrSubCommandPairVector;
+ // Print the options. Opts is assumed to be alphabetically sorted.
+ virtual void printOptions(StrOptionPairVector &Opts, size_t MaxArgLen) {
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ Opts[i].second->printOptionInfo(MaxArgLen);
+ }
+
+ void printSubCommands(StrSubCommandPairVector &Subs, size_t MaxSubLen) {
+ for (const auto &S : Subs) {
+ outs() << " " << S.first;
+ if (!S.second->getDescription().empty()) {
+ outs().indent(MaxSubLen - strlen(S.first));
+ outs() << " - " << S.second->getDescription();
+ }
+ outs() << "\n";
+ }
+ }
+
+public:
+ explicit HelpPrinter(bool showHidden) : ShowHidden(showHidden) {}
+ virtual ~HelpPrinter() {}
+
+ // Invoke the printer.
+ void operator=(bool Value) {
+ if (!Value)
+ return;
+ printHelp();
+
+ // Halt the program since help information was printed
+ exit(0);
+ }
+
+ void printHelp() {
+ SubCommand *Sub = GlobalParser->getActiveSubCommand();
+ auto &OptionsMap = Sub->OptionsMap;
+ auto &PositionalOpts = Sub->PositionalOpts;
+ auto &ConsumeAfterOpt = Sub->ConsumeAfterOpt;
+
+ StrOptionPairVector Opts;
+ sortOpts(OptionsMap, Opts, ShowHidden);
+
+ StrSubCommandPairVector Subs;
+ sortSubCommands(GlobalParser->RegisteredSubCommands, Subs);
+
+ if (!GlobalParser->ProgramOverview.empty())
+ outs() << "OVERVIEW: " << GlobalParser->ProgramOverview << "\n";
+
+ if (Sub == &*TopLevelSubCommand) {
+ outs() << "USAGE: " << GlobalParser->ProgramName;
+ if (Subs.size() > 2)
+ outs() << " [subcommand]";
+ outs() << " [options]";
+ } else {
+ if (!Sub->getDescription().empty()) {
+ outs() << "SUBCOMMAND '" << Sub->getName()
+ << "': " << Sub->getDescription() << "\n\n";
+ }
+ outs() << "USAGE: " << GlobalParser->ProgramName << " " << Sub->getName()
+ << " [options]";
+ }
+
+ for (auto Opt : PositionalOpts) {
+ if (Opt->hasArgStr())
+ outs() << " --" << Opt->ArgStr;
+ outs() << " " << Opt->HelpStr;
+ }
+
+ // Print the consume after option info if it exists...
+ if (ConsumeAfterOpt)
+ outs() << " " << ConsumeAfterOpt->HelpStr;
+
+ if (Sub == &*TopLevelSubCommand && !Subs.empty()) {
+ // Compute the maximum subcommand length...
+ size_t MaxSubLen = 0;
+ for (size_t i = 0, e = Subs.size(); i != e; ++i)
+ MaxSubLen = std::max(MaxSubLen, strlen(Subs[i].first));
+
+ outs() << "\n\n";
+ outs() << "SUBCOMMANDS:\n\n";
+ printSubCommands(Subs, MaxSubLen);
+ outs() << "\n";
+ outs() << " Type \"" << GlobalParser->ProgramName
+ << " <subcommand> --help\" to get more help on a specific "
+ "subcommand";
+ }
+
+ outs() << "\n\n";
+
+ // Compute the maximum argument length...
+ size_t MaxArgLen = 0;
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth());
+
+ outs() << "OPTIONS:\n";
+ printOptions(Opts, MaxArgLen);
+
+ // Print any extra help the user has declared.
+ for (auto I : GlobalParser->MoreHelp)
+ outs() << I;
+ GlobalParser->MoreHelp.clear();
+ }
+};
+
+class CategorizedHelpPrinter : public HelpPrinter {
+public:
+ explicit CategorizedHelpPrinter(bool showHidden) : HelpPrinter(showHidden) {}
+
+ // Helper function for printOptions().
+ // It shall return a negative value if A's name should be lexicographically
+ // ordered before B's name. It returns a value greater than zero if B's name
+ // should be ordered before A's name, and it returns 0 otherwise.
+ static int OptionCategoryCompare(OptionCategory *const *A,
+ OptionCategory *const *B) {
+ return (*A)->getName().compare((*B)->getName());
+ }
+
+ // Make sure we inherit our base class's operator=()
+ using HelpPrinter::operator=;
+
+protected:
+ void printOptions(StrOptionPairVector &Opts, size_t MaxArgLen) override {
+ std::vector<OptionCategory *> SortedCategories;
+ std::map<OptionCategory *, std::vector<Option *>> CategorizedOptions;
+
+ // Collect registered option categories into vector in preparation for
+ // sorting.
+ for (auto I = GlobalParser->RegisteredOptionCategories.begin(),
+ E = GlobalParser->RegisteredOptionCategories.end();
+ I != E; ++I) {
+ SortedCategories.push_back(*I);
+ }
+
+ // Sort the different option categories alphabetically.
+ assert(SortedCategories.size() > 0 && "No option categories registered!");
+ array_pod_sort(SortedCategories.begin(), SortedCategories.end(),
+ OptionCategoryCompare);
+
+ // Create map to empty vectors.
+ for (std::vector<OptionCategory *>::const_iterator
+ I = SortedCategories.begin(),
+ E = SortedCategories.end();
+ I != E; ++I)
+ CategorizedOptions[*I] = std::vector<Option *>();
+
+ // Walk through pre-sorted options and assign into categories.
+ // Because the options are already alphabetically sorted the
+ // options within categories will also be alphabetically sorted.
+ for (size_t I = 0, E = Opts.size(); I != E; ++I) {
+ Option *Opt = Opts[I].second;
+ for (auto &Cat : Opt->Categories) {
+ assert(CategorizedOptions.count(Cat) > 0 &&
+ "Option has an unregistered category");
+ CategorizedOptions[Cat].push_back(Opt);
+ }
+ }
+
+ // Now do printing.
+ for (std::vector<OptionCategory *>::const_iterator
+ Category = SortedCategories.begin(),
+ E = SortedCategories.end();
+ Category != E; ++Category) {
+ // Hide empty categories for --help, but show for --help-hidden.
+ const auto &CategoryOptions = CategorizedOptions[*Category];
+ bool IsEmptyCategory = CategoryOptions.empty();
+ if (!ShowHidden && IsEmptyCategory)
+ continue;
+
+ // Print category information.
+ outs() << "\n";
+ outs() << (*Category)->getName() << ":\n";
+
+ // Check if description is set.
+ if (!(*Category)->getDescription().empty())
+ outs() << (*Category)->getDescription() << "\n\n";
+ else
+ outs() << "\n";
+
+ // When using --help-hidden explicitly state if the category has no
+ // options associated with it.
+ if (IsEmptyCategory) {
+ outs() << " This option category has no options.\n";
+ continue;
+ }
+ // Loop over the options in the category and print.
+ for (const Option *Opt : CategoryOptions)
+ Opt->printOptionInfo(MaxArgLen);
+ }
+ }
+};
+
+// This wraps the Uncategorizing and Categorizing printers and decides
+// at run time which should be invoked.
+class HelpPrinterWrapper {
+private:
+ HelpPrinter &UncategorizedPrinter;
+ CategorizedHelpPrinter &CategorizedPrinter;
+
+public:
+ explicit HelpPrinterWrapper(HelpPrinter &UncategorizedPrinter,
+ CategorizedHelpPrinter &CategorizedPrinter)
+ : UncategorizedPrinter(UncategorizedPrinter),
+ CategorizedPrinter(CategorizedPrinter) {}
+
+ // Invoke the printer.
+ void operator=(bool Value);
+};
+
+} // End anonymous namespace
+
+// Declare the four HelpPrinter instances that are used to print out help, or
+// help-hidden as an uncategorized list or in categories.
+static HelpPrinter UncategorizedNormalPrinter(false);
+static HelpPrinter UncategorizedHiddenPrinter(true);
+static CategorizedHelpPrinter CategorizedNormalPrinter(false);
+static CategorizedHelpPrinter CategorizedHiddenPrinter(true);
+
+// Declare HelpPrinter wrappers that will decide whether or not to invoke
+// a categorizing help printer
+static HelpPrinterWrapper WrappedNormalPrinter(UncategorizedNormalPrinter,
+ CategorizedNormalPrinter);
+static HelpPrinterWrapper WrappedHiddenPrinter(UncategorizedHiddenPrinter,
+ CategorizedHiddenPrinter);
+
+// Define a category for generic options that all tools should have.
+static cl::OptionCategory GenericCategory("Generic Options");
+
+// Define uncategorized help printers.
+// --help-list is hidden by default because if Option categories are being used
+// then --help behaves the same as --help-list.
+static cl::opt<HelpPrinter, true, parser<bool>> HLOp(
+ "help-list",
+ cl::desc("Display list of available options (--help-list-hidden for more)"),
+ cl::location(UncategorizedNormalPrinter), cl::Hidden, cl::ValueDisallowed,
+ cl::cat(GenericCategory), cl::sub(*AllSubCommands));
+
+static cl::opt<HelpPrinter, true, parser<bool>>
+ HLHOp("help-list-hidden", cl::desc("Display list of all available options"),
+ cl::location(UncategorizedHiddenPrinter), cl::Hidden,
+ cl::ValueDisallowed, cl::cat(GenericCategory),
+ cl::sub(*AllSubCommands));
+
+// Define uncategorized/categorized help printers. These printers change their
+// behaviour at runtime depending on whether one or more Option categories have
+// been declared.
+static cl::opt<HelpPrinterWrapper, true, parser<bool>>
+ HOp("help", cl::desc("Display available options (--help-hidden for more)"),
+ cl::location(WrappedNormalPrinter), cl::ValueDisallowed,
+ cl::cat(GenericCategory), cl::sub(*AllSubCommands));
+
+static cl::alias HOpA("h", cl::desc("Alias for --help"), cl::aliasopt(HOp),
+ cl::DefaultOption);
+
+static cl::opt<HelpPrinterWrapper, true, parser<bool>>
+ HHOp("help-hidden", cl::desc("Display all available options"),
+ cl::location(WrappedHiddenPrinter), cl::Hidden, cl::ValueDisallowed,
+ cl::cat(GenericCategory), cl::sub(*AllSubCommands));
+
+static cl::opt<bool> PrintOptions(
+ "print-options",
+ cl::desc("Print non-default options after command line parsing"),
+ cl::Hidden, cl::init(false), cl::cat(GenericCategory),
+ cl::sub(*AllSubCommands));
+
+static cl::opt<bool> PrintAllOptions(
+ "print-all-options",
+ cl::desc("Print all option values after command line parsing"), cl::Hidden,
+ cl::init(false), cl::cat(GenericCategory), cl::sub(*AllSubCommands));
+
+void HelpPrinterWrapper::operator=(bool Value) {
+ if (!Value)
+ return;
+
+ // Decide which printer to invoke. If more than one option category is
+ // registered then it is useful to show the categorized help instead of
+ // uncategorized help.
+ if (GlobalParser->RegisteredOptionCategories.size() > 1) {
+ // unhide --help-list option so user can have uncategorized output if they
+ // want it.
+ HLOp.setHiddenFlag(NotHidden);
+
+ CategorizedPrinter = true; // Invoke categorized printer
+ } else
+ UncategorizedPrinter = true; // Invoke uncategorized printer
+}
+
+// Print the value of each option.
+void cl::PrintOptionValues() { GlobalParser->printOptionValues(); }
+
+void CommandLineParser::printOptionValues() {
+ if (!PrintOptions && !PrintAllOptions)
+ return;
+
+ SmallVector<std::pair<const char *, Option *>, 128> Opts;
+ sortOpts(ActiveSubCommand->OptionsMap, Opts, /*ShowHidden*/ true);
+
+ // Compute the maximum argument length...
+ size_t MaxArgLen = 0;
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth());
+
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ Opts[i].second->printOptionValue(MaxArgLen, PrintAllOptions);
+}
+
+static VersionPrinterTy OverrideVersionPrinter = nullptr;
+
+static std::vector<VersionPrinterTy> *ExtraVersionPrinters = nullptr;
+
+#if defined(__GNUC__)
+// GCC and GCC-compatible compilers define __OPTIMIZE__ when optimizations are
+// enabled.
+# if defined(__OPTIMIZE__)
+# define LLVM_IS_DEBUG_BUILD 0
+# else
+# define LLVM_IS_DEBUG_BUILD 1
+# endif
+#elif defined(_MSC_VER)
+// MSVC doesn't have a predefined macro indicating if optimizations are enabled.
+// Use _DEBUG instead. This macro actually corresponds to the choice between
+// debug and release CRTs, but it is a reasonable proxy.
+# if defined(_DEBUG)
+# define LLVM_IS_DEBUG_BUILD 1
+# else
+# define LLVM_IS_DEBUG_BUILD 0
+# endif
+#else
+// Otherwise, for an unknown compiler, assume this is an optimized build.
+# define LLVM_IS_DEBUG_BUILD 0
+#endif
+
+namespace {
+class VersionPrinter {
+public:
+ void print() {
+ raw_ostream &OS = outs();
+#ifdef PACKAGE_VENDOR
+ OS << PACKAGE_VENDOR << " ";
+#else
+ OS << "LLVM (http://llvm.org/):\n ";
+#endif
+ OS << PACKAGE_NAME << " version " << PACKAGE_VERSION;
+#ifdef LLVM_VERSION_INFO
+ OS << " " << LLVM_VERSION_INFO;
+#endif
+ OS << "\n ";
+#if LLVM_IS_DEBUG_BUILD
+ OS << "DEBUG build";
+#else
+ OS << "Optimized build";
+#endif
+#ifndef NDEBUG
+ OS << " with assertions";
+#endif
+#if LLVM_VERSION_PRINTER_SHOW_HOST_TARGET_INFO
+ std::string CPU = std::string(sys::getHostCPUName());
+ if (CPU == "generic")
+ CPU = "(unknown)";
+ OS << ".\n"
+ << " Default target: " << sys::getDefaultTargetTriple() << '\n'
+ << " Host CPU: " << CPU;
+#endif
+ OS << '\n';
+ }
+ void operator=(bool OptionWasSpecified) {
+ if (!OptionWasSpecified)
+ return;
+
+ if (OverrideVersionPrinter != nullptr) {
+ OverrideVersionPrinter(outs());
+ exit(0);
+ }
+ print();
+
+ // Iterate over any registered extra printers and call them to add further
+ // information.
+ if (ExtraVersionPrinters != nullptr) {
+ outs() << '\n';
+ for (const auto &I : *ExtraVersionPrinters)
+ I(outs());
+ }
+
+ exit(0);
+ }
+};
+} // End anonymous namespace
+
+// Define the --version option that prints out the LLVM version for the tool
+static VersionPrinter VersionPrinterInstance;
+
+static cl::opt<VersionPrinter, true, parser<bool>>
+ VersOp("version", cl::desc("Display the version of this program"),
+ cl::location(VersionPrinterInstance), cl::ValueDisallowed,
+ cl::cat(GenericCategory));
+
+// Utility function for printing the help message.
+void cl::PrintHelpMessage(bool Hidden, bool Categorized) {
+ if (!Hidden && !Categorized)
+ UncategorizedNormalPrinter.printHelp();
+ else if (!Hidden && Categorized)
+ CategorizedNormalPrinter.printHelp();
+ else if (Hidden && !Categorized)
+ UncategorizedHiddenPrinter.printHelp();
+ else
+ CategorizedHiddenPrinter.printHelp();
+}
+
+/// Utility function for printing version number.
+void cl::PrintVersionMessage() { VersionPrinterInstance.print(); }
+
+void cl::SetVersionPrinter(VersionPrinterTy func) { OverrideVersionPrinter = func; }
+
+void cl::AddExtraVersionPrinter(VersionPrinterTy func) {
+ if (!ExtraVersionPrinters)
+ ExtraVersionPrinters = new std::vector<VersionPrinterTy>;
+
+ ExtraVersionPrinters->push_back(func);
+}
+
+StringMap<Option *> &cl::getRegisteredOptions(SubCommand &Sub) {
+ auto &Subs = GlobalParser->RegisteredSubCommands;
+ (void)Subs;
+ assert(is_contained(Subs, &Sub));
+ return Sub.OptionsMap;
+}
+
+iterator_range<typename SmallPtrSet<SubCommand *, 4>::iterator>
+cl::getRegisteredSubcommands() {
+ return GlobalParser->getRegisteredSubcommands();
+}
+
+void cl::HideUnrelatedOptions(cl::OptionCategory &Category, SubCommand &Sub) {
+ for (auto &I : Sub.OptionsMap) {
+ for (auto &Cat : I.second->Categories) {
+ if (Cat != &Category &&
+ Cat != &GenericCategory)
+ I.second->setHiddenFlag(cl::ReallyHidden);
+ }
+ }
+}
+
+void cl::HideUnrelatedOptions(ArrayRef<const cl::OptionCategory *> Categories,
+ SubCommand &Sub) {
+ for (auto &I : Sub.OptionsMap) {
+ for (auto &Cat : I.second->Categories) {
+ if (!is_contained(Categories, Cat) && Cat != &GenericCategory)
+ I.second->setHiddenFlag(cl::ReallyHidden);
+ }
+ }
+}
+
+void cl::ResetCommandLineParser() { GlobalParser->reset(); }
+void cl::ResetAllOptionOccurrences() {
+ GlobalParser->ResetAllOptionOccurrences();
+}
+
+void LLVMParseCommandLineOptions(int argc, const char *const *argv,
+ const char *Overview) {
+ llvm::cl::ParseCommandLineOptions(argc, argv, StringRef(Overview),
+ &llvm::nulls());
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-09-24 01:33:45 +0000