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Support command line option categories.

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Patch by Dan Liew!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181253 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2013-05-06 21:56:23 +00:00
parent b072090f39
commit b7ad33b719
4 changed files with 323 additions and 28 deletions
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50
include/llvm/Support/CommandLine.h
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@@ -137,7 +137,23 @@ enum MiscFlags { // Miscellaneous flags to adjust argument
Sink = 0x04 // Should this cl::list eat all unknown options?
};
//===----------------------------------------------------------------------===//
// Option Category class
//
class OptionCategory {
private:
const char *const Name;
const char *const Description;
void registerCategory();
public:
OptionCategory(const char *const Name, const char *const Description = 0)
: Name(Name), Description(Description) { registerCategory(); }
const char *getName() { return Name; }
const char *getDescription() { return Description; }
};
// The general Option Category (used as default category).
extern OptionCategory GeneralCategory;
//===----------------------------------------------------------------------===//
// Option Base class
@@ -173,10 +189,12 @@ class Option {
unsigned Position; // Position of last occurrence of the option
unsigned AdditionalVals;// Greater than 0 for multi-valued option.
Option *NextRegistered; // Singly linked list of registered options.
public:
const char *ArgStr; // The argument string itself (ex: "help", "o")
const char *HelpStr; // The descriptive text message for -help
const char *ValueStr; // String describing what the value of this option is
const char *ArgStr; // The argument string itself (ex: "help", "o")
const char *HelpStr; // The descriptive text message for -help
const char *ValueStr; // String describing what the value of this option is
OptionCategory *Category; // The Category this option belongs to
inline enum NumOccurrencesFlag getNumOccurrencesFlag() const {
return (enum NumOccurrencesFlag)Occurrences;
@@ -214,13 +232,14 @@ public:
void setFormattingFlag(enum FormattingFlags V) { Formatting = V; }
void setMiscFlag(enum MiscFlags M) { Misc |= M; }
void setPosition(unsigned pos) { Position = pos; }
void setCategory(OptionCategory &C) { Category = &C; }
protected:
explicit Option(enum NumOccurrencesFlag OccurrencesFlag,
enum OptionHidden Hidden)
: NumOccurrences(0), Occurrences(OccurrencesFlag), Value(0),
HiddenFlag(Hidden), Formatting(NormalFormatting), Misc(0),
Position(0), AdditionalVals(0), NextRegistered(0),
ArgStr(""), HelpStr(""), ValueStr("") {
ArgStr(""), HelpStr(""), ValueStr(""), Category(&GeneralCategory) {
}
inline void setNumAdditionalVals(unsigned n) { AdditionalVals = n; }
@@ -312,6 +331,16 @@ struct LocationClass {
template<class Ty>
LocationClass<Ty> location(Ty &L) { return LocationClass<Ty>(L); }
// cat - Specifiy the Option category for the command line argument to belong
// to.
struct cat {
OptionCategory &Category;
cat(OptionCategory &c) : Category(c) {}
template<class Opt>
void apply(Opt &O) const { O.setCategory(Category); }
};
//===----------------------------------------------------------------------===//
// OptionValue class
@@ -1674,10 +1703,15 @@ struct extrahelp {
};
void PrintVersionMessage();
// This function just prints the help message, exactly the same way as if the
// -help option had been given on the command line.
// NOTE: THIS FUNCTION TERMINATES THE PROGRAM!
void PrintHelpMessage();
/// This function just prints the help message, exactly the same way as if the
/// -help or -help-hidden option had been given on the command line.
///
/// NOTE: THIS FUNCTION TERMINATES THE PROGRAM!
///
/// \param hidden if true will print hidden options
/// \param categorized if true print options in categories
void PrintHelpMessage(bool Hidden=false, bool Categorized=false);
} // End namespace cl