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;; geiser-debug.el -- displaying debug information
;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
;; Start date: Mon Feb 23, 2009 22:34
;; This file 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.
;; This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Comentary:
;; Buffer and associated mode for displaying results of evaluations
;; and compilations.
;;; Code:
(require 'geiser-eval)
(require 'geiser-popup)
(require 'geiser-base)
;;; Debug buffer mode:
(defconst geiser-debug--error-alist
'(("^\\(In file +\\| +\\)\\([^ \n]+\\):\\([0-9]+\\):\\([0-9]+\\)" 2 3 4)
("^Error.+$" nil nil nil 0)))
(define-derived-mode geiser-debug-mode compilation-mode "Geiser Dbg"
"A major mode for displaying Scheme compilation and evaluation results.
\\{geiser-debug-mode-map}"
(set (make-local-variable 'compilation-error-regexp-alist)
geiser-debug--error-alist))
;;; Buffer for displaying evaluation results:
(geiser-popup--define debug "*Geiser dbg*" geiser-debug-mode)
;;; Displaying retorts
(defun geiser-debug--display-retort (what ret)
(let* ((err (geiser-eval--retort-error ret))
(output (geiser-eval--retort-output ret))
(stack (geiser-eval--retort-stack ret)))
(geiser-debug--with-buffer
(erase-buffer)
(insert what)
(newline 2)
(when err (insert (geiser-eval--error-str err) "\n\n"))
(when output (insert output "\n\n"))
(when stack (geiser-debug--display-stack stack))
(goto-char (point-min)))
(when err (geiser-debug--pop-to-buffer))))
(defsubst geiser-debug--frame-proc (frame) (cdr (assoc 'procedure frame)))
(defsubst geiser-debug--frame-desc (frame) (cdr (assoc 'description frame)))
(defsubst geiser-debug--frame-source (frame) (cdr (assoc 'source frame)))
(defsubst geiser-debug--frame-source-file (src) (car src))
(defsubst geiser-debug--frame-source-line (src) (or (cadr src) 1))
(defsubst geiser-debug--frame-source-column (src) (or (caddr src) 0))
(defun geiser-debug--display-stack (stack)
(let* ((frames (cdr stack))
(step 2)
(indent (* (length frames) step)))
(dolist (f frames)
(geiser-debug--display-stack-frame f indent)
(setq indent (- indent step)))))
(defun geiser-debug--display-stack-frame (frame offset)
(let ((procedure (geiser-debug--frame-proc frame))
(source (geiser-debug--frame-source frame))
(description (geiser-debug--frame-desc frame)))
(if source
(insert (format "In file %s:%s:%s\n"
(geiser-debug--frame-source-file source)
(geiser-debug--frame-source-line source)
(1+ (geiser-debug--frame-source-column source))))
(insert "In expression:\n"))
(insert (format "%s%s\n" (make-string offset ?\ ) description))))
(defsubst geiser-debug--wrap-region (str)
(format "(begin %s)" str))
(defun geiser-debug--unwrap (str)
(if (string-match "(begin[ \t\n\v\r]+\\(.+\\)*)" str)
(match-string 1 str)
str))
(defun geiser-debug--send-region (compile start end and-go wrap)
(let* ((str (buffer-substring-no-properties start end))
(wrapped (if wrap (geiser-debug--wrap-region str) str))
(code `(,(if compile :comp :eval) (:scm ,wrapped)))
(ret (geiser-eval--send/wait code))
(err (geiser-eval--retort-error ret)))
(when and-go (funcall and-go))
(when (not err) (message (format "=> %s" (geiser-eval--retort-result ret))))
(geiser-debug--display-retort str ret)))
(defun geiser-debug--expand-region (start end all wrap)
(let* ((str (buffer-substring-no-properties start end))
(wrapped (if wrap (geiser-debug--wrap-region str) str))
(code `(:eval ((:ge macroexpand) (quote (:scm ,wrapped)) ,(if all :t :f))))
(ret (geiser-eval--send/wait code))
(err (geiser-eval--retort-error ret))
(result (geiser-eval--retort-result ret)))
(if err
(geiser-debug--display-retort str ret)
(geiser-debug--with-buffer
(erase-buffer)
(insert (format "%s" (if wrap (geiser-debug--unwrap result) result)))
(goto-char (point-min)))
(geiser-debug--pop-to-buffer))))
(provide 'geiser-debug)
;;; geiser-debug.el ends here
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