[Ecb-list] Feature suggestion

[Rob W. <rob...@te...>]

I'd like to suggest adding a way to filter the methods displayed in the 
methods buffer.
For example, at work I have to edit C files which have the function 
prototypes defined at the top of the file and the implementations at the 
bottom.
This means that everything appears twice in the methods buffer, but 
since I never want to jump to the prototypes, they're only wasting space 
in the methods buffer.

Attached is a patch that implements a basic version of this. It defines 
a buffer local variable ecb-taglist-filter which is a function that is 
called in ecb-post-process-taglist.
This should return a list of only those tags that are to be shown. 
Adding the following to .emacs will make ecb ignore function prototypes:

(defun filter (predicate sequence)
  "Filter out those elements of SEQUENCE for which PREDICATE returns nil."
  (let ((res))
    (while sequence
      (if (if predicate (funcall predicate (car sequence)) (car sequence))
          (setq res (append res (list (car sequence)))))
      (setq sequence (cdr sequence)))
    res))

(defun rw-ecb-methods-filter (taglist)
  (filter '(lambda (x) (not (semantic-tag-get-attribute x 'prototype))) 
taglist))

(add-hook 'c-mode-common-hook '(lambda () (setq ecb-taglist-filter 
'rw-ecb-methods-filter)))

Different filter functions can be defined to filter out functions by 
name etc.

I'm not sure if this will break ecb in some way, but it seems to work OK 
for me.

Rob