//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_SUPPORT_COMMANDLINE_H
-#define LLVM_SUPPORT_COMMANDLINE_H
+#ifndef SUPPORT_COMMANDLINE_H
+#define SUPPORT_COMMANDLINE_H
#include <string>
#include <vector>
#include <utility>
-#include <stdarg.h>
+#include <cstdarg>
#include "boost/type_traits/object_traits.hpp"
-namespace cl { // Short namespace to make usage concise
+#include <assert.h>
+
+/// cl Namespace - This namespace contains all of the command line option
+/// processing machinery. It is intentionally a short name to make qualified
+/// usage concise.
+namespace cl {
//===----------------------------------------------------------------------===//
// ParseCommandLineOptions - Command line option processing entry point.
};
enum ValueExpected { // Is a value required for the option?
- ValueOptional = 0x08, // The value can oppear... or not
+ ValueOptional = 0x08, // The value can appear... or not
ValueRequired = 0x10, // The value is required to appear!
ValueDisallowed = 0x18, // A value may not be specified (for flags)
ValueMask = 0x18,
FormattingMask = 0x180,
};
+enum MiscFlags { // Miscellaneous flags to adjust argument
+ CommaSeparated = 0x200, // Should this cl::list split between commas?
+ MiscMask = 0x200,
+};
+
+
//===----------------------------------------------------------------------===//
// Option Base class
int OH = Flags & FormattingMask;
return OH ? (enum FormattingFlags)OH : getFormattingFlagDefault();
}
+ inline unsigned getMiscFlags() const {
+ return Flags & MiscMask;
+ }
// hasArgStr - Return true if the argstr != ""
bool hasArgStr() const { return ArgStr[0] != 0; }
void setValueExpectedFlag(enum ValueExpected Val) { setFlag(Val, ValueMask); }
void setHiddenFlag(enum OptionHidden Val) { setFlag(Val, HiddenMask); }
void setFormattingFlag(enum FormattingFlags V) { setFlag(V, FormattingMask); }
-
+ void setMiscFlag(enum MiscFlags M) { setFlag(M, M); }
protected:
Option() : NumOccurances(0), Flags(0),
ArgStr(""), HelpStr(""), ValueStr("") {}
return ValueDisallowed;
}
+ // findOption - Return the option number corresponding to the specified
+ // argument string. If the option is not found, getNumOptions() is returned.
+ //
+ unsigned findOption(const char *Name);
+
protected:
bool hasArgStr;
};
//
template <class DataType>
class parser : public generic_parser_base {
+protected:
std::vector<std::pair<const char *,
std::pair<DataType, const char *> > > Values;
+public:
+ typedef DataType parser_data_type;
// Implement virtual functions needed by generic_parser_base
unsigned getNumOptions() const { return Values.size(); }
return Values[N].second.second;
}
-public:
- // Default implementation, requires user to populate it with values somehow.
- template<class Opt> // parse - Return true on error.
- bool parse(Opt &O, const char *ArgName, const string &Arg) {
- string ArgVal;
+ // parse - Return true on error.
+ bool parse(Option &O, const char *ArgName, const std::string &Arg,
+ DataType &V) {
+ std::string ArgVal;
if (hasArgStr)
ArgVal = Arg;
else
for (unsigned i = 0, e = Values.size(); i != e; ++i)
if (ArgVal == Values[i].first) {
- O.addValue(Values[i].second.first);
+ V = Values[i].second.first;
return false;
}
// addLiteralOption - Add an entry to the mapping table...
template <class DT>
void addLiteralOption(const char *Name, const DT &V, const char *HelpStr) {
+ assert(findOption(Name) == Values.size() && "Option already exists!");
Values.push_back(std::make_pair(Name, std::make_pair((DataType)V,HelpStr)));
}
-};
+ // removeLiteralOption - Remove the specified option.
+ //
+ void removeLiteralOption(const char *Name) {
+ unsigned N = findOption(Name);
+ assert(N != Values.size() && "Option not found!");
+ Values.erase(Values.begin()+N);
+ }
+};
//--------------------------------------------------
-// parser<bool>
+// basic_parser - Super class of parsers to provide boilerplate code
//
-template<>
-class parser<bool> {
- static bool parseImpl(Option &O, const string &Arg, bool &Val);
-public:
-
- template<class Opt> // parse - Return true on error.
- bool parse(Opt &O, const char *ArgName, const string &Arg) {
- bool Val;
- bool Error = parseImpl(O, Arg, Val);
- if (!Error) O.addValue(Val);
- return Error;
- }
+struct basic_parser_impl { // non-template implementation of basic_parser<t>
+ virtual ~basic_parser_impl() {}
enum ValueExpected getValueExpectedFlagDefault() const {
- return ValueOptional;
+ return ValueRequired;
}
-
+
void initialize(Option &O) {}
-
+
// Return the width of the option tag for printing...
- virtual unsigned getOptionWidth(const Option &O) const;
-
- // printOptionInfo - Print out information about this option. The
+ unsigned getOptionWidth(const Option &O) const;
+
+ // printOptionInfo - Print out information about this option. The
// to-be-maintained width is specified.
//
- virtual void printOptionInfo(const Option &O, unsigned GlobalWidth) const;
+ void printOptionInfo(const Option &O, unsigned GlobalWidth) const;
+
+
+ // getValueName - Overload in subclass to provide a better default value.
+ virtual const char *getValueName() const { return "value"; }
+};
+
+// basic_parser - The real basic parser is just a template wrapper that provides
+// a typedef for the provided data type.
+//
+template<class DataType>
+struct basic_parser : public basic_parser_impl {
+ typedef DataType parser_data_type;
};
//--------------------------------------------------
-// parser<int>
+// parser<bool>
//
template<>
-class parser<int> {
- static bool parseImpl(Option &O, const string &Arg, int &Val);
-public:
-
+struct parser<bool> : public basic_parser<bool> {
+
// parse - Return true on error.
- template<class Opt>
- bool parse(Opt &O, const char *ArgName, const string &Arg) {
- int Val;
- bool Error = parseImpl(O, Arg, Val);
- if (!Error) O.addValue(Val);
- return Error;
- }
+ bool parse(Option &O, const char *ArgName, const std::string &Arg, bool &Val);
enum ValueExpected getValueExpectedFlagDefault() const {
- return ValueRequired;
+ return ValueOptional;
}
- void initialize(Option &O) {}
-
- // Return the width of the option tag for printing...
- virtual unsigned getOptionWidth(const Option &O) const;
-
- // printOptionInfo - Print out information about this option. The
- // to-be-maintained width is specified.
- //
- virtual void printOptionInfo(const Option &O, unsigned GlobalWidth) const;
+ // getValueName - Do not print =<value> at all
+ virtual const char *getValueName() const { return 0; }
};
//--------------------------------------------------
-// parser<double>
+// parser<int>
//
template<>
-class parser<double> {
- static bool parseImpl(Option &O, const string &Arg, double &Val);
-public:
+struct parser<int> : public basic_parser<int> {
// parse - Return true on error.
- template<class Opt>
- bool parse(Opt &O, const char *ArgName, const string &Arg) {
- double Val;
- bool Error = parseImpl(O, Arg, Val);
- if (!Error) O.addValue(Val);
- return Error;
- }
+ bool parse(Option &O, const char *ArgName, const std::string &Arg, int &Val);
- enum ValueExpected getValueExpectedFlagDefault() const {
- return ValueRequired;
- }
+ // getValueName - Overload in subclass to provide a better default value.
+ virtual const char *getValueName() const { return "int"; }
+};
- void initialize(Option &O) {}
- // Return the width of the option tag for printing...
- virtual unsigned getOptionWidth(const Option &O) const;
+//--------------------------------------------------
+// parser<double>
+//
+template<>
+struct parser<double> : public basic_parser<double> {
+ // parse - Return true on error.
+ bool parse(Option &O, const char *AN, const std::string &Arg, double &Val);
- // printOptionInfo - Print out information about this option. The
- // to-be-maintained width is specified.
- //
- virtual void printOptionInfo(const Option &O, unsigned GlobalWidth) const;
+ // getValueName - Overload in subclass to provide a better default value.
+ virtual const char *getValueName() const { return "number"; }
};
-// Parser<float> is the same as parser<double>
-template<> struct parser<float> : public parser<double> {};
+//--------------------------------------------------
+// parser<float>
+//
+template<>
+struct parser<float> : public basic_parser<float> {
+ // parse - Return true on error.
+ bool parse(Option &O, const char *AN, const std::string &Arg, float &Val);
+
+ // getValueName - Overload in subclass to provide a better default value.
+ virtual const char *getValueName() const { return "number"; }
+};
//--------------------------------------------------
-// parser<string>
+// parser<std::string>
//
template<>
-struct parser<string> {
+struct parser<std::string> : public basic_parser<std::string> {
// parse - Return true on error.
- template<class Opt>
- bool parse(Opt &O, const char *ArgName, const string &Arg) {
- O.addValue(Arg);
+ bool parse(Option &O, const char *ArgName, const std::string &Arg,
+ std::string &Value) {
+ Value = Arg;
return false;
}
- enum ValueExpected getValueExpectedFlagDefault() const {
- return ValueRequired;
- }
-
- void initialize(Option &O) {}
- // Return the width of the option tag for printing...
- virtual unsigned getOptionWidth(const Option &O) const;
-
- // printOptionInfo - Print out information about this option. The
- // to-be-maintained width is specified.
- //
- virtual void printOptionInfo(const Option &O, unsigned GlobalWidth) const;
+ // getValueName - Overload in subclass to provide a better default value.
+ virtual const char *getValueName() const { return "string"; }
};
template<class Opt>
static void opt(const char *Str, Opt &O) { O.setArgStr(Str); }
};
+template<unsigned n> struct applicator<const char[n]> {
+ template<class Opt>
+ static void opt(const char *Str, Opt &O) { O.setArgStr(Str); }
+};
template<> struct applicator<const char*> {
template<class Opt>
static void opt(const char *Str, Opt &O) { O.setArgStr(Str); }
template<> struct applicator<FormattingFlags> {
static void opt(FormattingFlags FF, Option &O) { O.setFormattingFlag(FF); }
};
+template<> struct applicator<MiscFlags> {
+ static void opt(MiscFlags MF, Option &O) { O.setMiscFlag(MF); }
+};
// apply method - Apply a modifier to an option in a type safe way.
template<class Mod, class Opt>
class ParserClass = parser<DataType> >
class opt : public Option,
public opt_storage<DataType, ExternalStorage,
- ::boost::is_class<DataType>::value>{
+ ::boost::is_class<DataType>::value> {
ParserClass Parser;
virtual bool handleOccurance(const char *ArgName, const std::string &Arg) {
- return Parser.parse(*this, ArgName, Arg);
+ typename ParserClass::parser_data_type Val;
+ if (Parser.parse(*this, ArgName, Arg, Val))
+ return true; // Parse error!
+ setValue(Val);
+ return false;
}
virtual enum ValueExpected getValueExpectedFlagDefault() const {
// setInitialValue - Used by the cl::init modifier...
void setInitialValue(const DataType &V) { setValue(V); }
- // addValue - Used by the parser to add a value to the option
- template<class T>
- void addValue(const T &V) { setValue(V); }
ParserClass &getParser() { return Parser; }
operator DataType() const { return getValue(); }
}
virtual bool handleOccurance(const char *ArgName, const std::string &Arg) {
- return Parser.parse(*this, ArgName, Arg);
+ typename ParserClass::parser_data_type Val;
+ if (Parser.parse(*this, ArgName, Arg, Val))
+ return true; // Parse Error!
+ addValue(Val);
+ return false;
}
// Forward printing stuff to the parser...
projects / oota-llvm.git / blobdiff