It is possible to create new methods for tagging files in speedbar. To do this, you need two basic functions, one function to fetch the tags from a buffer, the other to insert them below the filename.
Parse file for a list of tags. Return the list, or
tif there was an error.
The non-error return value can be anything, as long as it can be inserted by its paired function:
Insert a list of tags lst started at indentation level level. Creates buttons for each tag, and provides any other display information required.
It is often useful to use
speedbar-create-tag-hierarchy on your
token list. See that function's documentation for details on what it
Once these two functions are written, modify the variable
speedbar-dynamic-tags-function-list to include your parser at the
beginning, like this:
(add-to-list 'speedbar-dynamic-tags-function-list '(my-fetch-dynamic-tags . my-insert-tag-list))
If your parser is only good for a few types of files, make sure that it
is either a buffer local modification, or that the tag generator returns
t for non valid buffers.