Description

GenericFieldSet?._addField() compute field size to:

• check that field is not bigger than maximum size (limited by stream size or parent size)
• update self.current_size

To make _addField() lazier:

• read self.current_size should be lazy
• check field maximum size should be done just after reading field size

This task looks very complex.

Another idea to help this task (?): don't check field size but set maximum size for a field