Function: edebug-make-form-wrapper

edebug-make-form-wrapper is a byte-compiled function defined in edebug.el.gz.

Signature

(edebug-make-form-wrapper CURSOR FORM-BEGIN FORM-END &optional SPECLIST)

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/edebug.el.gz
(defun edebug-make-form-wrapper (cursor form-begin form-end
					&optional speclist)
  ;; Wrap a form, usually a defining form, but any evaluated one.
  ;; If speclist is non-nil, this is being called by edebug-defining-form.
  ;; Otherwise it is being called from edebug-read-and-maybe-wrap-form1.
  ;; This is a hack, but I haven't figured out a simpler way yet.
  (let* ((form-data-entry (edebug-get-form-data-entry form-begin form-end))
	 ;; Set this marker before parsing.
	 (edebug-form-begin-marker
	  (if form-data-entry
	      (edebug--form-data-begin form-data-entry)
	    ;; Buffer must be current-buffer for this to work:
	    (set-marker (make-marker) form-begin))))

    (let (edebug-offset-list
	  (edebug-offset-index 0)
	  result
	  ;; For definitions.
	  ;; (edebug-containing-def-name edebug-def-name)
	  ;; Get name from form-data, if any.
	  (edebug-old-def-name (edebug--form-data-name form-data-entry))
	  edebug-def-name
	  edebug-def-args
	  edebug-inside-func;; whether wrapped code executes inside a function.
	  )

      (setq result
	    (if speclist
		(edebug-match cursor speclist)

	      ;; else wrap as an enter-form.
	      (edebug-make-enter-wrapper (list (edebug-form cursor)))))

      ;; Set the name here if it was not set by edebug-make-enter-wrapper.
      (setq edebug-def-name
            (or edebug-def-name edebug-old-def-name (gensym "edebug-anon")))

      ;; Add this def as a dependent of containing def.  Buggy.
      '(if (and edebug-containing-def-name
		(not (get edebug-containing-def-name 'edebug-dependents)))
	   (put edebug-containing-def-name 'edebug-dependents
		(cons edebug-def-name
		      (get edebug-containing-def-name
			   'edebug-dependents))))

      ;; Create a form-data-entry or modify existing entry's markers.
      ;; In the latter case, pointers to the entry remain eq.
      (if (not form-data-entry)
	  (setq form-data-entry
		(edebug--make-form-data-entry
		 edebug-def-name
		 edebug-form-begin-marker
		 ;; Buffer must be current-buffer.
		 (set-marker (make-marker) form-end)
		 ))
	(edebug-set-form-data-entry
	 form-data-entry edebug-def-name ;; in case name is changed
	 form-begin form-end))

      ;;    (message "defining: %s" edebug-def-name) (sit-for 2)
      (edebug-make-top-form-data-entry form-data-entry)
      ;;(debug edebug-def-name)

      ;; Destructively reverse edebug-offset-list and make vector from it.
      (setq edebug-offset-list (vconcat (nreverse edebug-offset-list)))

      ;; Side effects on the property list of edebug-def-name.
      (edebug-clear-frequency-count edebug-def-name)
      (edebug-clear-coverage edebug-def-name)

      ;; Set up the initial window data.
      (if (not edebug-top-window-data) ;; if not already set, do it now.
	  (let ((window ;; Find the best window for this buffer.
		 (or (get-buffer-window (current-buffer))
		     (selected-window))))
	    (setq edebug-top-window-data
		  (cons window (window-start window)))))

      ;; Store the edebug data in symbol's property list.
      ;; We actually want to remove this property entirely, but can't.
      (put edebug-def-name 'ghost-edebug nil)
      (put edebug-def-name 'edebug
	   ;; A struct or vector would be better here!!
	   (list edebug-form-begin-marker
		 (edebug--restore-breakpoints edebug-old-def-name)
		 edebug-offset-list
		 edebug-top-window-data))

      (funcall edebug-new-definition-function edebug-def-name)
      result
      )))