Method format

src/fl/stl/format.h:323–346

    FormatArg(unsigned char v) : mType(Type::UInt) { mData.u = v; }

    fl::string format(const FormatSpec& spec) const {
        switch (mType) {
            case Type::Int:       return format_integer(mData.i, spec);
            case Type::UInt:      return format_integer(mData.u, spec);
            case Type::Long:      return format_integer(mData.l, spec);
            case Type::ULong:     return format_integer(mData.ul, spec);
            case Type::LongLong:  return format_integer(mData.ll, spec);
            case Type::ULongLong: return format_integer(mData.ull, spec);
            case Type::Double:    return format_float(mData.d, spec);
            case Type::Char: {
                if (spec.type == 'd' || spec.type == 'x' || spec.type == 'X' ||
                    spec.type == 'b' || spec.type == 'o') {
                    return format_integer(static_cast<int>(mData.c), spec);
                }
                char buf[2] = {mData.c, '\0'};
                return fl::string(buf);
            }
            case Type::CString:   return format_string(mData.s, spec);
            case Type::String:    return format_string(mData.str->c_str(), spec);
            case Type::Pointer:   return format_pointer(mData.p, spec);
            case Type::None:
            default:              return fl::string("<invalid>");
        }
    }

    bool valid() const { return mType != Type::None; }