CppStringReturnFail.cpp

wstring type_name(const wstring& tlon_type_name) override
      {
        auto it = known_types.find(tlon_type_name);
        if (it != known_types.end())
          return known_types[tlon_type_name];
        
        if (tlon_type_name.length() > 1 &&
          (tlon_type_name[0] == L'u' || tlon_type_name[0] == L'i'))
        {
          try
          {
            auto count = lexical_cast<int>(tlon_type_name.substr(1));
            wostringstream buffer;
            buffer << "integer range ";
            if (tlon_type_name[0] == L'u')
            {
              // 0 to 2^n
              buffer << "0 to " << (1 << count);
            } 
            else
            {
              // -2^(n-1) to 2^(n-1) - 1
              buffer << "-" << (1 << (count - 1)) << " to "
                << (1 << (count - 1)) - 1;
            }
            return buffer.str();
          } 
          catch (bad_cast)
          {
          }
        }
        // MSVC compiles the function even with the next line uncommented
        //return tlon_type_name;
      }