this macro, the first argument is the enum value, the second is the flag name,
and the second is the description.</li>
+<li><a name="cl::multi_val">The <b><tt>cl::multi_val</tt></b></a>
+attribute specifies that this option takes has multiple values
+(example: <tt>-sectalign segname sectname sectvalue</tt>). This
+attribute takes one unsigned argument - the number of values for the
+option. This attribute is valid only on <tt>cl::list</tt> options (and
+will fail with compile error if you try to use it with other option
+types). It is allowed to use all of the usual modifiers on
+multi-valued options (besides <tt>cl::ValueDisallowed</tt>,
+obviously).</li>
+
+
</ol>
You will get a compile time error if you try to use cl::values with a parser
int NumOccurrences; // The number of times specified
int Flags; // Flags for the argument
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")
return Flags & MiscMask;
}
inline unsigned getPosition() const { return Position; }
+ inline unsigned getNumAdditionalVals() const { return AdditionalVals; }
// hasArgStr - Return true if the argstr != ""
bool hasArgStr() const { return ArgStr[0] != 0; }
protected:
explicit Option(unsigned DefaultFlags)
: NumOccurrences(0), Flags(DefaultFlags | NormalFormatting), Position(0),
- NextRegistered(0), ArgStr(""), HelpStr(""), ValueStr("") {
+ AdditionalVals(0), NextRegistered(0),
+ ArgStr(""), HelpStr(""), ValueStr("") {
assert(getNumOccurrencesFlag() != 0 &&
getOptionHiddenFlag() != 0 && "Not all default flags specified!");
}
+ inline void setNumAdditionalVals(unsigned n)
+ { AdditionalVals = n; }
public:
// addArgument - Register this argument with the commandline system.
//
// addOccurrence - Wrapper around handleOccurrence that enforces Flags
//
bool addOccurrence(unsigned pos, const char *ArgName,
- const std::string &Value);
+ const std::string &Value, bool MultiArg = false);
// Prints option name followed by message. Always returns true.
bool error(std::string Message, const char *ArgName = 0);
return Positions[optnum];
}
+ void setNumAdditionalVals(unsigned n) {
+ Option::setNumAdditionalVals(n);
+ }
+
// One option...
template<class M0t>
explicit list(const M0t &M0) : Option(ZeroOrMore | NotHidden) {
}
};
+// multi_arg - Modifier to set the number of additional values.
+struct multi_val {
+ unsigned AdditionalVals;
+ explicit multi_val(unsigned N) : AdditionalVals(N) {}
+
+ template <typename D, typename S, typename P>
+ void apply(list<D, S, P> &L) const { L.setNumAdditionalVals(AdditionalVals); }
+};
+
+
//===----------------------------------------------------------------------===//
// bits_storage class
static inline bool ProvideOption(Option *Handler, const char *ArgName,
const char *Value, int argc, char **argv,
int &i) {
+ // Is this a multi-argument option?
+ unsigned NumAdditionalVals = Handler->getNumAdditionalVals();
+
// Enforce value requirements
switch (Handler->getValueExpectedFlag()) {
case ValueRequired:
}
break;
case ValueDisallowed:
+ if (NumAdditionalVals > 0)
+ return Handler->error(": multi-valued option specified"
+ " with ValueDisallowed modifier!");
+
if (Value)
return Handler->error(" does not allow a value! '" +
std::string(Value) + "' specified.");
break;
}
- // Run the handler now!
- return Handler->addOccurrence(i, ArgName, Value ? Value : "");
+ // If this isn't a multi-arg option, just run the handler.
+ if (NumAdditionalVals == 0) {
+ return Handler->addOccurrence(i, ArgName, Value ? Value : "");
+ }
+ // If it is, run the handle several times.
+ else {
+ bool MultiArg = false;
+
+ if (Value) {
+ if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
+ return true;
+ --NumAdditionalVals;
+ MultiArg = true;
+ }
+
+ while (NumAdditionalVals > 0) {
+
+ if (i+1 < argc) {
+ Value = argv[++i];
+ } else {
+ return Handler->error(": not enough values!");
+ }
+ if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
+ return true;
+ MultiArg = true;
+ --NumAdditionalVals;
+ }
+ return false;
+ }
}
static bool ProvidePositionalOption(Option *Handler, const std::string &Arg,
}
bool Option::addOccurrence(unsigned pos, const char *ArgName,
- const std::string &Value) {
- NumOccurrences++; // Increment the number of times we have been seen
+ const std::string &Value,
+ bool MultiArg) {
+ if (!MultiArg)
+ NumOccurrences++; // Increment the number of times we have been seen
switch (getNumOccurrencesFlag()) {
case Optional: