//
//===----------------------------------------------------------------------===//
-#include "Support/CommandLine.h"
+#include "llvm/Config/config.h"
+#include "llvm/Support/CommandLine.h"
#include <algorithm>
#include <map>
#include <set>
using namespace cl;
+// Globals for name and overview of program
+static const char *ProgramName = "<unknown>";
+static const char *ProgramOverview = 0;
+
+// This collects additional help to be printed.
+static std::vector<const char*> &MoreHelp() {
+ static std::vector<const char*> moreHelp;
+ return moreHelp;
+}
+
+extrahelp::extrahelp(const char* Help)
+ : morehelp(Help) {
+ MoreHelp().push_back(Help);
+}
+
//===----------------------------------------------------------------------===//
// 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 std::map<std::string, Option*> CommandLineOptions;
+ 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;
+ std::map<std::string,Option*>::iterator I = getOpts().find(Str);
+ return I != getOpts().end() ? I->second : 0;
}
static std::vector<Option*> &getPositionalOpts() {
- static std::vector<Option*> *Positional = 0;
- if (!Positional) Positional = new std::vector<Option*>();
- return *Positional;
+ 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";
+ std::cerr << ProgramName << ": CommandLine Error: Argument '"
+ << ArgName << "' defined more than once!\n";
} else {
// Add argument to the argument map!
getOpts()[ArgName] = Opt;
// 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;
- }
-}
+ if(getOpts().empty()) return;
-static const char *ProgramName = 0;
-static const char *ProgramOverview = 0;
+#ifndef NDEBUG
+ // This disgusting HACK is brought to you courtesy of GCC 3.3.2, which ICE's
+ // If we pass ArgName directly into getOption here.
+ std::string Tmp = ArgName;
+ assert(getOption(Tmp) == Opt && "Arg not in map!");
+#endif
+ getOpts().erase(ArgName);
+}
static inline bool ProvideOption(Option *Handler, const char *ArgName,
const char *Value, int argc, char **argv,
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();
+ case ValueOptional:
+ break;
+ default:
+ std::cerr << ProgramName
+ << ": Bad ValueMask flag! CommandLine usage error:"
+ << Handler->getValueExpectedFlag() << "\n";
+ abort();
+ break;
}
// Run the handler now!
- return Handler->addOccurrence(ArgName, Value);
+ return Handler->addOccurrence(i, ArgName, Value);
}
-static bool ProvidePositionalOption(Option *Handler, const std::string &Arg) {
- int Dummy;
+static bool ProvidePositionalOption(Option *Handler, const std::string &Arg,
+ int i) {
+ int Dummy = i;
return ProvideOption(Handler, Handler->ArgStr, Arg.c_str(), 0, 0, Dummy);
}
/// them later.
///
static void ParseCStringVector (std::vector<char *> &output,
- const char *input) {
+ const char *input) {
// Characters which will be treated as token separators:
static const char *delims = " \v\f\t\r\n";
}
}
- // PositionalVals - A vector of "positional" arguments we accumulate into to
- // processes at the end...
+ // PositionalVals - A vector of "positional" arguments we accumulate into
+ // the process at the end...
//
- std::vector<std::string> PositionalVals;
+ std::vector<std::pair<std::string,unsigned> > 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
if (argv[i][0] != '-' || argv[i][1] == 0 || DashDashFound) {
// Positional argument!
if (ActivePositionalArg) {
- ProvidePositionalOption(ActivePositionalArg, argv[i]);
+ ProvidePositionalOption(ActivePositionalArg, argv[i], i);
continue; // We are done!
} else if (!PositionalOpts.empty()) {
- PositionalVals.push_back(argv[i]);
+ PositionalVals.push_back(std::make_pair(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 != 0) {
for (++i; i < argc; ++i)
- PositionalVals.push_back(argv[i]);
+ PositionalVals.push_back(std::make_pair(argv[i],i));
break; // Handle outside of the argument processing loop...
}
ArgName = argv[i]+1;
Handler = LookupOption(ArgName, Value);
if (!Handler || Handler->getFormattingFlag() != cl::Positional) {
- ProvidePositionalOption(ActivePositionalArg, argv[i]);
+ ProvidePositionalOption(ActivePositionalArg, argv[i], i);
continue; // We are done!
}
Handler = LookupOption(ArgName, Value);
// Check to see if this "option" is really a prefixed or grouped argument.
- if (Handler == 0 && *Value == 0) {
+ if (Handler == 0) {
std::string RealName(ArgName);
if (RealName.size() > 1) {
unsigned Length = 0;
}
if (Handler == 0) {
- std::cerr << "Unknown command line argument '" << argv[i] << "'. Try: '"
- << argv[0] << " --help'\n";
+ std::cerr << ProgramName << ": Unknown command line argument '" << argv[i]
+ << "'. Try: '" << argv[0] << " --help'\n";
ErrorParsing = true;
continue;
}
// Check and handle positional arguments now...
if (NumPositionalRequired > PositionalVals.size()) {
- std::cerr << "Not enough positional command line arguments specified!\n"
+ std::cerr << ProgramName
+ << ": Not enough positional command line arguments specified!\n"
<< "Must specify at least " << NumPositionalRequired
<< " positional arguments: See: " << argv[0] << " --help\n";
ErrorParsing = true;
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++]);
+ ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
--NumPositionalRequired; // We fulfilled our duty...
}
// 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++]);
+ ProvidePositionalOption(PositionalOpts[i],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
break;
default:
assert(0 && "Internal error, unexpected NumOccurrences flag in "
assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size());
unsigned ValNo = 0;
for (unsigned j = 1, e = PositionalOpts.size(); j != e; ++j)
- if (RequiresValue(PositionalOpts[j]))
+ if (RequiresValue(PositionalOpts[j])) {
ErrorParsing |= ProvidePositionalOption(PositionalOpts[j],
- PositionalVals[ValNo++]);
+ 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() == 2 && ValNo == 0 && !PositionalVals.empty())
+ if (PositionalOpts.size() == 2 && ValNo == 0 && !PositionalVals.empty()) {
ErrorParsing |= ProvidePositionalOption(PositionalOpts[1],
- PositionalVals[ValNo++]);
+ 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]);
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
}
// Loop over args and make sure all required args are specified!
// Free all of the memory allocated to the map. Command line options may only
// be processed once!
- delete CommandLineOptions;
- CommandLineOptions = 0;
+ getOpts().clear();
PositionalOpts.clear();
+ MoreHelp().clear();
// If we had an error processing our arguments, don't let the program execute
if (ErrorParsing) exit(1);
if (ArgName[0] == 0)
std::cerr << HelpStr; // Be nice for positional arguments
else
- std::cerr << "-" << ArgName;
- std::cerr << " option" << Message << "\n";
+ std::cerr << ProgramName << ": for the -" << ArgName;
+ std::cerr << " option: " << Message << "\n";
return true;
}
-bool Option::addOccurrence(const char *ArgName, const std::string &Value) {
+bool Option::addOccurrence(unsigned pos, const char *ArgName, const std::string &Value) {
NumOccurrences++; // Increment the number of times we have been seen
switch (getNumOccurrencesFlag()) {
default: return error(": bad num occurrences flag value!");
}
- return handleOccurrence(ArgName, Value);
+ return handleOccurrence(pos, ArgName, Value);
}
// addArgument - Tell the system that this Option subclass will handle all
//===----------------------------------------------------------------------===//
// --help and --help-hidden option implementation
//
+
namespace {
class HelpPrinter {
for (unsigned i = 0, e = Options.size(); i != e; ++i)
Options[i].second->printOptionInfo(MaxArgLen);
- // Halt the program if help information is printed
+ // Print any extra help the user has declared.
+ for (std::vector<const char *>::iterator I = MoreHelp().begin(),
+ E = MoreHelp().end(); I != E; ++I)
+ std::cerr << *I;
+ MoreHelp().clear();
+
+ // Halt the program since help information was printed
exit(1);
}
};
+class VersionPrinter {
+public:
+ void operator=(bool OptionWasSpecified) {
+ if (OptionWasSpecified) {
+ std::cerr << "Low Level Virtual Machine (" << PACKAGE_NAME << ") "
+ << PACKAGE_VERSION << " (see http://llvm.cs.uiuc.edu/)\n";
+ exit(1);
+ }
+ }
+};
// Define the two HelpPrinter instances that are used to print out help, or
HHOp("help-hidden", cl::desc("display all available options"),
cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed);
+// Define the --version option that prints out the LLVM version for the tool
+VersionPrinter VersionPrinterInstance;
+cl::opt<VersionPrinter, true, parser<bool> >
+VersOp("version", cl::desc("display the version"),
+ cl::location(VersionPrinterInstance), cl::ValueDisallowed);
+
+
} // End anonymous namespace
+
+// Utility function for printing the help message.
+void cl::PrintHelpMessage() {
+ // This looks weird, but it actually prints the help message. The
+ // NormalPrinter variable is a HelpPrinter and the help gets printed when
+ // its operator= is invoked. That's because the "normal" usages of the
+ // help printer is to be assigned true/false depending on whether the
+ // --help option was given or not. Since we're circumventing that we have
+ // to make it look like --help was given, so we assign true.
+ NormalPrinter = true;
+}
projects / oota-llvm.git / blobdiff