code: def enum_value(self):
          
          if not hasattr(self, '_enum_value'):
              assert self.kind == CursorKind.ENUM_CONSTANT_DECL
              # Figure out the underlying type of the enum to know if it
              # is a signed or unsigned quantity.
              underlying_type = self.type
              if underlying_type.kind == TypeKind.ENUM:
                  underlying_type = underlying_type.get_declaration().enum_type
              if underlying_type.kind in (TypeKind.CHAR_U,
                                          TypeKind.UCHAR,
                                          TypeKind.CHAR16,
                                          TypeKind.CHAR32,
                                          TypeKind.USHORT,
                                          TypeKind.UINT,
                                          TypeKind.ULONG,
                                          TypeKind.ULONGLONG,
                                          TypeKind.UINT128):
                  self._enum_value = \
                    conf.lib.clang_getEnumConstantDeclUnsignedValue(self)
              else:
                  self._enum_value = conf.lib.clang_getEnumConstantDeclValue(self)
          return self._enum_value
docs: Return the value of an enum constant.