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;;; cedet-edebug.el --- Special EDEBUG augmentation code
;;; Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
;; Author: Eric M. Ludlam <zappo@gnu.org>
;; Version: 0.2
;; Keywords: OO, lisp
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Some aspects of EDEBUG are not extensible. It is possible to extend
;; edebug through other means, such as alias or advice, but those don't stack
;; very well when there are multiple tools trying to do the same sort of thing.
;;
;; This package provides a way to extend some aspects of edebug, such as value
;; printing.
;;; Code:
(require 'edebug)
(require 'debug)
(defvar cedet-edebug-prin1-extensions nil
"An alist of of code that can extend PRIN1 for edebug.
Each entry has the value: (CONDITION . PRIN1COMMAND).")
(defun cedet-edebug-prin1-recurse (object)
"Recurse into OBJECT for prin1 on `cedet-edebug-prin1-to-string'."
(concat "(" (mapconcat 'cedet-edebug-prin1-to-string object " ") ")"))
(defun cedet-edebug-rebuild-prin1 ()
"Rebuild the function `cedet-edebug-prin1-to-string'.
Use the values of `cedet-edebug-prin1-extensions' as the means of
constructing the function."
(interactive)
(let ((c cedet-edebug-prin1-extensions)
(code nil))
(while c
(setq code (append (list (list (car (car c))
(cdr (car c))))
code))
(setq c (cdr c)))
(fset 'cedet-edebug-prin1-to-string-inner
`(lambda (object &optional noescape)
"Display eieio OBJECT in fancy format. Overrides the edebug default.
Optional argument NOESCAPE is passed to `prin1-to-string' when appropriate."
(cond
,@(nreverse code)
(t (prin1-to-string object noescape)))))
))
(defun cedet-edebug-prin1-to-string (object &optional noescape)
"CEDET version of `edebug-prin1-to-string' that adds specialty
print methods for very large complex objects."
(if (not (fboundp 'cedet-edebug-prin1-to-string-inner))
;; Recreate the official fcn now.
(cedet-edebug-rebuild-prin1))
;; Call the auto-generated version.
;; This is not going to be available at compile time.
(with-no-warnings
(cedet-edebug-prin1-to-string-inner object noescape)))
(defun cedet-edebug-add-print-override (testfcn printfcn)
"Add a new EDEBUG print override.
TESTFCN is a routine that returns nil if the first argument
passed to it is not to use PRINTFCN.
PRINTFCN accepts an object identified by TESTFCN and
returns a string.
New tests are always added to the END of the list of tests.
See `cedet-edebug-prin1-extensions' for the official list."
(condition-case nil
(add-to-list 'cedet-edebug-prin1-extensions
(cons testfcn printfcn)
t)
(error ;; That failed, it must be an older version of Emacs
;; withouth the append argument for `add-to-list'
;; Doesn't handle the don't add twice case, but that's a
;; development thing and developers probably use new emacsen.
(setq cedet-edebug-prin1-extensions
(append cedet-edebug-prin1-extensions
(list (cons testfcn printfcn))))))
;; whack the old implementation to force a rebuild.
(fmakunbound 'cedet-edebug-prin1-to-string-inner))
;;; NOTE TO SELF. Make this system used as an extension
;;; and then autoload the below.
(add-hook 'edebug-setup-hook
(lambda ()
(require 'cedet-edebug)
;; I suspect this isn't the best way to do this, but when
;; cust-print was used on my system all my objects
;; appeared as "#1 =" which was not useful. This allows
;; edebug to print my objects in the nice way they were
;; meant to with `object-print' and `class-name'
(defalias 'edebug-prin1-to-string 'cedet-edebug-prin1-to-string)
;; Add a fancy binding into EDEBUG's keymap for ADEBUG.
(define-key edebug-mode-map "A" 'data-debug-edebug-expr)
))
;;; DEBUG MODE TOO
;; This seems like as good a place as any to stick this hack.
(add-hook 'debugger-mode-hook
(lambda ()
(require 'cedet-edebug)
;; Add a fancy binding into the debug mode map for ADEBUG.
(define-key debugger-mode-map "A" 'data-debug-edebug-expr)
))
(provide 'cedet-edebug)
;;; cedet-edebug.el ends here
|
