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#ifndef LDC_CL_HELPERS_H
#define LDC_CL_HELPERS_H
#include <string>
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
template <typename TYPE> struct ArrayBase;
typedef ArrayBase<char> Strings;
namespace opts {
namespace cl = llvm::cl;
/// Helper class for fancier options
class FlagParser : public cl::parser<bool> {
std::vector<std::pair<std::string, bool> > switches;
public:
template <class Opt>
void initialize(Opt &O) {
std::string Name = O.ArgStr;
switches.push_back(make_pair("enable-" + Name, true));
switches.push_back(make_pair("disable-" + Name, false));
// Replace <foo> with -enable-<foo>
O.ArgStr = switches[0].first.data();
}
bool parse(cl::Option &O, llvm::StringRef ArgName, llvm::StringRef ArgValue, bool &Val);
void getExtraOptionNames(llvm::SmallVectorImpl<const char*> &Names);
};
/// Helper class for options that set multiple flags
class MultiSetter {
std::vector<bool*> locations;
bool invert;
MultiSetter(bool); //not implemented, disable auto-conversion
public:
MultiSetter(bool invert, bool* p, ...) END_WITH_NULL;
void operator=(bool val);
};
/// Helper class to fill Strings with char* when given strings
/// (Errors on empty strings)
class StringsAdapter {
const char* name;
Strings** arrp;
public:
StringsAdapter(const char* name_, Strings*& arr) {
name = name_;
arrp = &arr;
assert(name);
assert(arrp);
}
void push_back(const char* cstr);
void push_back(const std::string& str) {
push_back(str.c_str());
}
};
/// Helper class to allow use of a parser<bool> with BoolOrDefault
class BoolOrDefaultAdapter {
cl::boolOrDefault value;
public:
operator cl::boolOrDefault() {
return value;
}
void operator=(cl::boolOrDefault val) {
value = val;
}
void operator=(bool val) {
*this = (val ? cl::BOU_TRUE : cl::BOU_FALSE);
}
};
}
#endif
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