Parse a dictionary in format {'name': value} and encode it directly to protobuf */

The two callbacks below are traditional callbacks that use function pointers * defined in pb_callback_t. */

Parse a tree in format [[1 2] 3] and encode it directly to protobuf */

Return the maximum size that this field can take when encoded, including the field tag. If the size cannot be determined, returns None

Returns the size of the largest oneof field.

Return the maximum size that this message can take when encoded. If the size cannot be determined, returns None.