Move support/lib into lib/Support

Move support/tools into utils


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8878 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 877 deletions

diff --git a/support/lib/Support/CommandLine.cpp b/support/lib/Support/CommandLine.cpp
deleted file mode 100644
index c0be0ecb34..0000000000
--- a/support/lib/Support/CommandLine.cpp
+++ /dev/null
@@ -1,877 +0,0 @@
-//===-- CommandLine.cpp - Command line parser implementation --------------===//
-//
-// 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 "Support/CommandLine.h"
-#include <algorithm>
-#include <map>
-#include <set>
-#include <iostream>
-
-using namespace cl;
-
-//===----------------------------------------------------------------------===//
-// Basic, shared command line option processing machinery...
-//
-
-// Return the global command line option vector.  Making it a function scoped
-// static ensures that it will be initialized correctly before its first use.
-//
-static std::map<std::string, Option*> *CommandLineOptions = 0;
-static std::map<std::string, Option*> &getOpts() {
-  if (CommandLineOptions == 0)
-    CommandLineOptions = new std::map<std::string,Option*>();
-  return *CommandLineOptions;
-}
-
-static Option *getOption(const std::string &Str) {
-  if (CommandLineOptions == 0) return 0;
-  std::map<std::string,Option*>::iterator I = CommandLineOptions->find(Str);
-  return I != CommandLineOptions->end() ? I->second : 0;
-}
-
-static std::vector<Option*> &getPositionalOpts() {
-  static std::vector<Option*> Positional;
-  return Positional;
-}
-
-static void AddArgument(const char *ArgName, Option *Opt) {
-  if (getOption(ArgName)) {
-    std::cerr << "CommandLine Error: Argument '" << ArgName
-              << "' defined more than once!\n";
-  } else {
-    // Add argument to the argument map!
-    getOpts()[ArgName] = Opt;
-  }
-}
-
-// RemoveArgument - It's possible that the argument is no longer in the map if
-// options have already been processed and the map has been deleted!
-// 
-static void RemoveArgument(const char *ArgName, Option *Opt) {
-  if (CommandLineOptions == 0) return;
-  assert(getOption(ArgName) == Opt && "Arg not in map!");
-  CommandLineOptions->erase(ArgName);
-  if (CommandLineOptions->empty()) {
-    delete CommandLineOptions;
-    CommandLineOptions = 0;
-  }
-}
-
-static const char *ProgramName = 0;
-static const char *ProgramOverview = 0;
-
-static inline bool ProvideOption(Option *Handler, const char *ArgName,
-                                 const char *Value, int argc, char **argv,
-                                 int &i) {
-  // Enforce value requirements
-  switch (Handler->getValueExpectedFlag()) {
-  case ValueRequired:
-    if (Value == 0 || *Value == 0) {  // No value specified?
-      if (i+1 < argc) {     // Steal the next argument, like for '-o filename'
-        Value = argv[++i];
-      } else {
-        return Handler->error(" requires a value!");
-      }
-    }
-    break;
-  case ValueDisallowed:
-    if (*Value != 0)
-      return Handler->error(" does not allow a value! '" + 
-                            std::string(Value) + "' specified.");
-    break;
-  case ValueOptional: break;
-  default: std::cerr << "Bad ValueMask flag! CommandLine usage error:" 
-                     << Handler->getValueExpectedFlag() << "\n"; abort();
-  }
-
-  // Run the handler now!
-  return Handler->addOccurrence(ArgName, Value);
-}
-
-static bool ProvidePositionalOption(Option *Handler, const std::string &Arg) {
-  int Dummy;
-  return ProvideOption(Handler, Handler->ArgStr, Arg.c_str(), 0, 0, Dummy);
-}
-
-
-// Option predicates...
-static inline bool isGrouping(const Option *O) {
-  return O->getFormattingFlag() == cl::Grouping;
-}
-static inline bool isPrefixedOrGrouping(const Option *O) {
-  return isGrouping(O) || O->getFormattingFlag() == cl::Prefix;
-}
-
-// 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(std::string Name, unsigned &Length,
-                             bool (*Pred)(const Option*)) {
-  
-  Option *Op = getOption(Name);
-  if (Op && Pred(Op)) {
-    Length = Name.length();
-    return Op;
-  }
-
-  if (Name.size() == 1) return 0;
-  do {
-    Name.erase(Name.end()-1, Name.end());   // Chop off the last character...
-    Op = getOption(Name);
-
-    // 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 ((Op == 0 || !Pred(Op)) && Name.size() > 1);
-
-  if (Op && Pred(Op)) {
-    Length = Name.length();
-    return Op;             // Found one!
-  }
-  return 0;                // No option found!
-}
-
-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;
-}
-
-/// ParseCStringVector - Break INPUT up wherever one or more
-/// whitespace characters are found, and store the resulting tokens in
-/// OUTPUT. The tokens stored in OUTPUT are dynamically allocated
-/// using strdup (), so it is the caller's responsibility to free ()
-/// them later.
-///
-static void ParseCStringVector (std::vector<char *> &output,
-				const char *input) {
-  // Characters which will be treated as token separators:
-  static const char *delims = " \v\f\t\r\n";
-
-  std::string work (input);
-  // Skip past any delims at head of input string.
-  size_t pos = work.find_first_not_of (delims);
-  // If the string consists entirely of delims, then exit early.
-  if (pos == std::string::npos) return;
-  // Otherwise, jump forward to beginning of first word.
-  work = work.substr (pos);
-  // Find position of first delimiter.
-  pos = work.find_first_of (delims);
-
-  while (!work.empty() && pos != std::string::npos) {
-    // Everything from 0 to POS is the next word to copy.
-    output.push_back (strdup (work.substr (0,pos).c_str ()));
-    // Is there another word in the string?
-    size_t nextpos = work.find_first_not_of (delims, pos + 1);
-    if (nextpos != std::string::npos) {
-      // Yes? Then remove delims from beginning ...
-      work = work.substr (work.find_first_not_of (delims, pos + 1));
-      // and find the end of the word.
-      pos = work.find_first_of (delims);
-    } else {
-      // No? (Remainder of string is delims.) End the loop.
-      work = "";
-      pos = std::string::npos;
-    }
-  }
-
-  // If `input' ended with non-delim char, then we'll get here with
-  // the last word of `input' in `work'; copy it now.
-  if (!work.empty ()) {
-    output.push_back (strdup (work.c_str ()));
-  }
-}
-
-/// ParseEnvironmentOptions - An alternative entry point to the
-/// CommandLine library, which allows you to read the program's name
-/// from the caller (as PROGNAME) and its command-line arguments from
-/// an environment variable (whose name is given in ENVVAR).
-///
-void cl::ParseEnvironmentOptions (const char *progName, const char *envVar,
-				  const char *Overview) {
-  // Check args.
-  assert (progName && "Program name not specified");
-  assert (envVar && "Environment variable name missing");
-  
-  // Get the environment variable they want us to parse options out of.
-  const char *envValue = getenv (envVar);
-  if (!envValue)
-    return;
-
-  // Get program's "name", which we wouldn't know without the caller
-  // telling us.
-  std::vector<char *> newArgv;
-  newArgv.push_back (strdup (progName));
-
-  // Parse the value of the environment variable into a "command line"
-  // and hand it off to ParseCommandLineOptions().
-  ParseCStringVector (newArgv, envValue);
-  int newArgc = newArgv.size ();
-  ParseCommandLineOptions (newArgc, &newArgv[0], Overview);
-
-  // Free all the strdup()ed strings.
-  for (std::vector<char *>::iterator i = newArgv.begin (), e = newArgv.end ();
-       i != e; ++i) {
-    free (*i);
-  }
-}
-
-void cl::ParseCommandLineOptions(int &argc, char **argv,
-                                 const char *Overview) {
-  assert((!getOpts().empty() || !getPositionalOpts().empty()) &&
-         "No options specified, or ParseCommandLineOptions called more"
-         " than once!");
-  ProgramName = argv[0];  // Save this away safe and snug
-  ProgramOverview = Overview;
-  bool ErrorParsing = false;
-
-  std::map<std::string, Option*> &Opts = getOpts();
-  std::vector<Option*> &PositionalOpts = getPositionalOpts();
-
-  // Check out the positional arguments to collect information about them.
-  unsigned NumPositionalRequired = 0;
-  Option *ConsumeAfterOpt = 0;
-  if (!PositionalOpts.empty()) {
-    if (PositionalOpts[0]->getNumOccurrencesFlag() == cl::ConsumeAfter) {
-      assert(PositionalOpts.size() > 1 &&
-             "Cannot specify cl::ConsumeAfter without a positional argument!");
-      ConsumeAfterOpt = PositionalOpts[0];
-    }
-
-    // Calculate how many positional values are _required_.
-    bool UnboundedFound = false;
-    for (unsigned i = ConsumeAfterOpt != 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() > 2)
-          ErrorParsing |=
-            Opt->error(" error - this positional option will never be matched, "
-                       "because it does not Require a value, and a "
-                       "cl::ConsumeAfter option is active!");
-      } else if (UnboundedFound && !Opt->ArgStr[0]) {
-        // 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!
-        //
-        ErrorParsing |= 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!");
-      }
-      UnboundedFound |= EatsUnboundedNumberOfValues(Opt);
-    }
-  }
-
-  // PositionalVals - A vector of "positional" arguments we accumulate into to
-  // processes at the end...
-  //
-  std::vector<std::string> 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 = 0;
-
-  // Loop over all of the arguments... processing them.
-  bool DashDashFound = false;  // Have we read '--'?
-  for (int i = 1; i < argc; ++i) {
-    Option *Handler = 0;
-    const char *Value = "";
-    const char *ArgName = "";
-
-    // 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, argv[i]);
-        continue;  // We are done!
-      } else if (!PositionalOpts.empty()) {
-        PositionalVals.push_back(argv[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 != 0) {
-          for (++i; i < argc; ++i)
-            PositionalVals.push_back(argv[i]);
-          break;   // Handle outside of the argument processing loop...
-        }
-
-        // Delay processing positional arguments until the end...
-        continue;
-      }
-    } else {               // We start with a '-', must be an argument...
-      ArgName = argv[i]+1;
-      while (*ArgName == '-') ++ArgName;  // Eat leading dashes
-
-      if (*ArgName == 0 && !DashDashFound) {   // Is this the mythical "--"?
-        DashDashFound = true;  // Yup, take note of that fact...
-        continue;              // Don't try to process it as an argument itself.
-      }
-
-      const char *ArgNameEnd = ArgName;
-      while (*ArgNameEnd && *ArgNameEnd != '=')
-        ++ArgNameEnd; // Scan till end of argument name...
-
-      Value = ArgNameEnd;
-      if (*Value)           // If we have an equals sign...
-        ++Value;            // Advance to value...
-
-      if (*ArgName != 0) {
-        std::string RealName(ArgName, ArgNameEnd);
-        // Extract arg name part
-        std::map<std::string, Option*>::iterator I = Opts.find(RealName);
-
-        if (I == Opts.end() && !*Value && RealName.size() > 1) {
-          // Check to see if this "option" is really a prefixed or grouped
-          // argument...
-          //
-          unsigned Length = 0;
-          Option *PGOpt = getOptionPred(RealName, Length, isPrefixedOrGrouping);
-
-          // If the option is a prefixed option, then the value is simply the
-          // rest of the name...  so fall through to later processing, by
-          // setting up the argument name flags and value fields.
-          //
-          if (PGOpt && PGOpt->getFormattingFlag() == cl::Prefix) {
-            ArgNameEnd = ArgName+Length;
-            Value = ArgNameEnd;
-            I = Opts.find(std::string(ArgName, ArgNameEnd));
-            assert(I->second == PGOpt);
-          } else if (PGOpt) {
-            // This must be a grouped option... handle all of them now...
-            assert(isGrouping(PGOpt) && "Broken getOptionPred!");
-
-            do {
-              // Move current arg name out of RealName into RealArgName...
-              std::string RealArgName(RealName.begin(),RealName.begin()+Length);
-              RealName.erase(RealName.begin(), RealName.begin()+Length);
-
-              // Because ValueRequired is an invalid flag for grouped arguments,
-              // we don't need to pass argc/argv in...
-              //
-              assert(PGOpt->getValueExpectedFlag() != cl::ValueRequired &&
-                     "Option can not be cl::Grouping AND cl::ValueRequired!");
-              int Dummy;
-              ErrorParsing |= ProvideOption(PGOpt, RealArgName.c_str(), "",
-                                            0, 0, Dummy);
-
-              // Get the next grouping option...
-              if (!RealName.empty())
-                PGOpt = getOptionPred(RealName, Length, isGrouping);
-            } while (!RealName.empty() && PGOpt);
-
-            if (RealName.empty())    // Processed all of the options, move on
-              continue;              // to the next argv[] value...
-
-            // If RealName is not empty, that means we did not match one of the
-            // options!  This is an error.
-            //
-            I = Opts.end();
-          }
-        }
-
-        Handler = I != Opts.end() ? I->second : 0;
-      }
-    }
-
-    if (Handler == 0) {
-      std::cerr << "Unknown command line argument '" << argv[i] << "'.  Try: '"
-                << argv[0] << " --help'\n";
-      ErrorParsing = true;
-      continue;
-    }
-
-    // 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) {
-      std::string Val(Value);
-      std::string::size_type Pos = Val.find(',');
-
-      while (Pos != std::string::npos) {
-        // Process the portion before the comma...
-        ErrorParsing |= ProvideOption(Handler, ArgName,
-                                      std::string(Val.begin(),
-                                                  Val.begin()+Pos).c_str(),
-                                      argc, argv, i);
-        // Erase the portion before the comma, AND the comma...
-        Val.erase(Val.begin(), Val.begin()+Pos+1);
-        Value += Pos+1;  // Increment the original value pointer as well...
-
-        // Check for another comma...
-        Pos = Val.find(',');
-      }
-    }
-
-    // If this is a named positional argument, just remember that it is the
-    // active one...
-    if (Handler->getFormattingFlag() == cl::Positional)
-      ActivePositionalArg = Handler;
-    else 
-      ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i);
-  }
-
-  // Check and handle positional arguments now...
-  if (NumPositionalRequired > PositionalVals.size()) {
-    std::cerr << "Not enough positional command line arguments specified!\n"
-              << "Must specify at least " << NumPositionalRequired
-              << " positional arguments: See: " << argv[0] << " --help\n";
-    ErrorParsing = true;
-
-
-  } else if (ConsumeAfterOpt == 0) {
-    // Positional args have already been handled if ConsumeAfter is specified...
-    unsigned ValNo = 0, NumVals = PositionalVals.size();
-    for (unsigned i = 0, e = PositionalOpts.size(); i != e; ++i) {
-      if (RequiresValue(PositionalOpts[i])) {
-        ProvidePositionalOption(PositionalOpts[i], PositionalVals[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
-          // FALL THROUGH
-        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++]);
-          break;
-        default:
-          assert(0 && "Internal error, unexpected NumOccurrences flag in "
-                 "positional argument processing!");
-        }
-      }
-    }
-  } else {
-    assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size());
-    unsigned ValNo = 0;
-    for (unsigned j = 1, e = PositionalOpts.size(); j != e; ++j)
-      if (RequiresValue(PositionalOpts[j]))
-        ErrorParsing |= ProvidePositionalOption(PositionalOpts[j],
-                                                PositionalVals[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() == 2 && ValNo == 0 && !PositionalVals.empty())
-      ErrorParsing |= ProvidePositionalOption(PositionalOpts[1],
-                                              PositionalVals[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]);
-  }
-
-  // Loop over args and make sure all required args are specified!
-  for (std::map<std::string, Option*>::iterator I = Opts.begin(), 
-         E = Opts.end(); I != E; ++I) {
-    switch (I->second->getNumOccurrencesFlag()) {
-    case Required:
-    case OneOrMore:
-      if (I->second->getNumOccurrences() == 0) {
-        I->second->error(" must be specified at least once!");
-        ErrorParsing = true;
-      }
-      // Fall through
-    default:
-      break;
-    }
-  }
-
-  // Free all of the memory allocated to the map.  Command line options may only
-  // be processed once!
-  delete CommandLineOptions;
-  CommandLineOptions = 0;
-  PositionalOpts.clear();
-
-  // If we had an error processing our arguments, don't let the program execute
-  if (ErrorParsing) exit(1);
-}
-
-//===----------------------------------------------------------------------===//
-// Option Base class implementation
-//
-
-bool Option::error(std::string Message, const char *ArgName) {
-  if (ArgName == 0) ArgName = ArgStr;
-  if (ArgName[0] == 0)
-    std::cerr << HelpStr;  // Be nice for positional arguments
-  else
-    std::cerr << "-" << ArgName;
-  std::cerr << " option" << Message << "\n";
-  return true;
-}
-
-bool Option::addOccurrence(const char *ArgName, const std::string &Value) {
-  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);
-    // Fall through
-  case OneOrMore:
-  case ZeroOrMore:
-  case ConsumeAfter: break;
-  default: return error(": bad num occurrences flag value!");
-  }
-
-  return handleOccurrence(ArgName, Value);
-}
-
-// addArgument - Tell the system that this Option subclass will handle all
-// occurrences of -ArgStr on the command line.
-//
-void Option::addArgument(const char *ArgStr) {
-  if (ArgStr[0])
-    AddArgument(ArgStr, this);
-
-  if (getFormattingFlag() == Positional)
-    getPositionalOpts().push_back(this);
-  else if (getNumOccurrencesFlag() == ConsumeAfter) {
-    if (!getPositionalOpts().empty() &&
-        getPositionalOpts().front()->getNumOccurrencesFlag() == ConsumeAfter)
-      error("Cannot specify more than one option with cl::ConsumeAfter!");
-    getPositionalOpts().insert(getPositionalOpts().begin(), this);
-  }
-}
-
-void Option::removeArgument(const char *ArgStr) {
-  if (ArgStr[0])
-    RemoveArgument(ArgStr, this);
-
-  if (getFormattingFlag() == Positional) {
-    std::vector<Option*>::iterator I =
-      std::find(getPositionalOpts().begin(), getPositionalOpts().end(), this);
-    assert(I != getPositionalOpts().end() && "Arg not registered!");
-    getPositionalOpts().erase(I);
-  } else if (getNumOccurrencesFlag() == ConsumeAfter) {
-    assert(!getPositionalOpts().empty() && getPositionalOpts()[0] == this &&
-           "Arg not registered correctly!");
-    getPositionalOpts().erase(getPositionalOpts().begin());
-  }
-}
-
-
-// getValueStr - Get the value description string, using "DefaultMsg" if nothing
-// has been specified yet.
-//
-static const char *getValueStr(const Option &O, const char *DefaultMsg) {
-  if (O.ValueStr[0] == 0) return DefaultMsg;
-  return O.ValueStr;
-}
-
-//===----------------------------------------------------------------------===//
-// cl::alias class implementation
-//
-
-// Return the width of the option tag for printing...
-unsigned alias::getOptionWidth() const {
-  return std::strlen(ArgStr)+6;
-}
-
-// Print out the option for the alias...
-void alias::printOptionInfo(unsigned GlobalWidth) const {
-  unsigned L = std::strlen(ArgStr);
-  std::cerr << "  -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - "
-            << HelpStr << "\n";
-}
-
-
-
-//===----------------------------------------------------------------------===//
-// Parser Implementation code...
-//
-
-// basic_parser implementation
-//
-
-// Return the width of the option tag for printing...
-unsigned basic_parser_impl::getOptionWidth(const Option &O) const {
-  unsigned Len = std::strlen(O.ArgStr);
-  if (const char *ValName = getValueName())
-    Len += std::strlen(getValueStr(O, ValName))+3;
-
-  return Len + 6;
-}
-
-// printOptionInfo - Print out information about this option.  The 
-// to-be-maintained width is specified.
-//
-void basic_parser_impl::printOptionInfo(const Option &O,
-                                        unsigned GlobalWidth) const {
-  std::cerr << "  -" << O.ArgStr;
-
-  if (const char *ValName = getValueName())
-    std::cerr << "=<" << getValueStr(O, ValName) << ">";
-
-  std::cerr << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - "
-            << O.HelpStr << "\n";
-}
-
-
-
-
-// parser<bool> implementation
-//
-bool parser<bool>::parse(Option &O, const char *ArgName,
-                         const std::string &Arg, bool &Value) {
-  if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" || 
-      Arg == "1") {
-    Value = true;
-  } else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
-    Value = false;
-  } else {
-    return O.error(": '" + Arg +
-                   "' is invalid value for boolean argument! Try 0 or 1");
-  }
-  return false;
-}
-
-// parser<int> implementation
-//
-bool parser<int>::parse(Option &O, const char *ArgName,
-                        const std::string &Arg, int &Value) {
-  char *End;
-  Value = (int)strtol(Arg.c_str(), &End, 0);
-  if (*End != 0) 
-    return O.error(": '" + Arg + "' value invalid for integer argument!");
-  return false;
-}
-
-// parser<unsigned> implementation
-//
-bool parser<unsigned>::parse(Option &O, const char *ArgName,
-                             const std::string &Arg, unsigned &Value) {
-  char *End;
-  long long int V = strtoll(Arg.c_str(), &End, 0);
-  Value = (unsigned)V;
-  if (*End != 0 || V < 0 || Value != V) 
-    return O.error(": '" + Arg + "' value invalid for uint argument!");
-  return false;
-}
-
-// parser<double>/parser<float> implementation
-//
-static bool parseDouble(Option &O, const std::string &Arg, double &Value) {
-  const char *ArgStart = Arg.c_str();
-  char *End;
-  Value = strtod(ArgStart, &End);
-  if (*End != 0) 
-    return O.error(": '" +Arg+ "' value invalid for floating point argument!");
-  return false;
-}
-
-bool parser<double>::parse(Option &O, const char *AN,
-                           const std::string &Arg, double &Val) {
-  return parseDouble(O, Arg, Val);
-}
-
-bool parser<float>::parse(Option &O, const char *AN,
-                          const std::string &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(const char *Name) {
-  unsigned i = 0, e = getNumOptions();
-  std::string N(Name);
-
-  while (i != e)
-    if (getOption(i) == N)
-      return i;
-    else
-      ++i;
-  return e;
-}
-
-
-// Return the width of the option tag for printing...
-unsigned generic_parser_base::getOptionWidth(const Option &O) const {
-  if (O.hasArgStr()) {
-    unsigned Size = std::strlen(O.ArgStr)+6;
-    for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
-      Size = std::max(Size, (unsigned)std::strlen(getOption(i))+8);
-    return Size;
-  } else {
-    unsigned BaseSize = 0;
-    for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
-      BaseSize = std::max(BaseSize, (unsigned)std::strlen(getOption(i))+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,
-                                          unsigned GlobalWidth) const {
-  if (O.hasArgStr()) {
-    unsigned L = std::strlen(O.ArgStr);
-    std::cerr << "  -" << O.ArgStr << std::string(GlobalWidth-L-6, ' ')
-              << " - " << O.HelpStr << "\n";
-
-    for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
-      unsigned NumSpaces = GlobalWidth-strlen(getOption(i))-8;
-      std::cerr << "    =" << getOption(i) << std::string(NumSpaces, ' ')
-                << " - " << getDescription(i) << "\n";
-    }
-  } else {
-    if (O.HelpStr[0])
-      std::cerr << "  " << O.HelpStr << "\n"; 
-    for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
-      unsigned L = std::strlen(getOption(i));
-      std::cerr << "    -" << getOption(i) << std::string(GlobalWidth-L-8, ' ')
-                << " - " << getDescription(i) << "\n";
-    }
-  }
-}
-
-
-//===----------------------------------------------------------------------===//
-// --help and --help-hidden option implementation
-//
-namespace {
-
-class HelpPrinter {
-  unsigned MaxArgLen;
-  const Option *EmptyArg;
-  const bool ShowHidden;
-
-  // isHidden/isReallyHidden - Predicates to be used to filter down arg lists.
-  inline static bool isHidden(std::pair<std::string, Option *> &OptPair) {
-    return OptPair.second->getOptionHiddenFlag() >= Hidden;
-  }
-  inline static bool isReallyHidden(std::pair<std::string, Option *> &OptPair) {
-    return OptPair.second->getOptionHiddenFlag() == ReallyHidden;
-  }
-
-public:
-  HelpPrinter(bool showHidden) : ShowHidden(showHidden) {
-    EmptyArg = 0;
-  }
-
-  void operator=(bool Value) {
-    if (Value == false) return;
-
-    // Copy Options into a vector so we can sort them as we like...
-    std::vector<std::pair<std::string, Option*> > Options;
-    copy(getOpts().begin(), getOpts().end(), std::back_inserter(Options));
-
-    // Eliminate Hidden or ReallyHidden arguments, depending on ShowHidden
-    Options.erase(std::remove_if(Options.begin(), Options.end(), 
-                         std::ptr_fun(ShowHidden ? isReallyHidden : isHidden)),
-                  Options.end());
-
-    // Eliminate duplicate entries in table (from enum flags options, f.e.)
-    {  // Give OptionSet a scope
-      std::set<Option*> OptionSet;
-      for (unsigned i = 0; i != Options.size(); ++i)
-        if (OptionSet.count(Options[i].second) == 0)
-          OptionSet.insert(Options[i].second);   // Add new entry to set
-        else
-          Options.erase(Options.begin()+i--);    // Erase duplicate
-    }
-
-    if (ProgramOverview)
-      std::cerr << "OVERVIEW:" << ProgramOverview << "\n";
-
-    std::cerr << "USAGE: " << ProgramName << " [options]";
-
-    // Print out the positional options...
-    std::vector<Option*> &PosOpts = getPositionalOpts();
-    Option *CAOpt = 0;   // The cl::ConsumeAfter option, if it exists...
-    if (!PosOpts.empty() && PosOpts[0]->getNumOccurrencesFlag() == ConsumeAfter)
-      CAOpt = PosOpts[0];
-
-    for (unsigned i = CAOpt != 0, e = PosOpts.size(); i != e; ++i) {
-      if (PosOpts[i]->ArgStr[0])
-        std::cerr << " --" << PosOpts[i]->ArgStr;
-      std::cerr << " " << PosOpts[i]->HelpStr;
-    }
-
-    // Print the consume after option info if it exists...
-    if (CAOpt) std::cerr << " " << CAOpt->HelpStr;
-
-    std::cerr << "\n\n";
-
-    // Compute the maximum argument length...
-    MaxArgLen = 0;
-    for (unsigned i = 0, e = Options.size(); i != e; ++i)
-      MaxArgLen = std::max(MaxArgLen, Options[i].second->getOptionWidth());
-
-    std::cerr << "OPTIONS:\n";
-    for (unsigned i = 0, e = Options.size(); i != e; ++i)
-      Options[i].second->printOptionInfo(MaxArgLen);
-
-    // Halt the program if help information is printed
-    exit(1);
-  }
-};
-
-
-
-// Define the two HelpPrinter instances that are used to print out help, or
-// help-hidden...
-//
-HelpPrinter NormalPrinter(false);
-HelpPrinter HiddenPrinter(true);
-
-cl::opt<HelpPrinter, true, parser<bool> > 
-HOp("help", cl::desc("display available options (--help-hidden for more)"),
-    cl::location(NormalPrinter), cl::ValueDisallowed);
-
-cl::opt<HelpPrinter, true, parser<bool> >
-HHOp("help-hidden", cl::desc("display all available options"),
-     cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed);
-
-} // End anonymous namespace