srecode

Semantic does the job of converting source code into useful tag
information.  The set of `semantic-format-tag' functions has one
function that will create a prototype of a tag, which has severe
issues of complexity (in the format tag file itself) and inaccuracy
(for the purpose of C++ code.)

Contemplation of the simplistic problem within the scope of
semantic showed that the solution was more complex than could
possibly be handled in semantic/format.el.   Semantic Recode, or
srecode is a rich API for generating code out of semantic tags, or
recoding the tags.

See the srecode manual for specific details.