Option.cc

#include "Option.hh"
 
#include <cstring>
 
namespace Host::Option {
 
std::optional<EOption> CheckFlag(const char *arg) {
    ASSERT(arg);
    if (arg[0] != '-') {
        return std::nullopt;
    }
 
    // Verbose flag
    if (arg[1] == '-') {
        const char *verbose_arg = &arg[2];
 
        if (strcmp(verbose_arg, "mode") == 0) {
            return EOption::Mode;
        }
 
        if (strcmp(verbose_arg, "suite") == 0) {
            return EOption::Suite;
        }
 
        if (strcmp(verbose_arg, "ghost") == 0) {
            return EOption::Ghost;
        }
 
        return EOption::Invalid;
    } else {
        switch (arg[1]) {
        case 'M':
        case 'm':
            return EOption::Mode;
        case 'S':
        case 's':
            return EOption::Suite;
        case 'G':
        case 'g':
            return EOption::Ghost;
        default:
            return EOption::Invalid;
        }
    }
 
    // This is unreachable
    return std::nullopt;
}
 
} // namespace Host::Option