;; geiser-compile.el -- compile/load scheme files

;; Copyright (C) 2009 Jose Antonio Ortega Ruiz

;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
;; Start date: Wed Feb 11, 2009 00:16

;; 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:

;; Functions to compile and load Scheme files.

;;; Code:

(require 'geiser-eval)
(require 'geiser-popup)
(require 'geiser-base)


;;; Compilation buffer:

(define-derived-mode geiser-compile-mode compilation-mode "Geiser Compilation"
  "Major mode showing the results of compiling or loading scheme files.
\{geiser-compile-mode-keymap}")

(geiser-popup--define compile "*Geiser compilation*" geiser-compile-mode)


;;; Auxiliary functions:

(defun geiser-compile--buffer/path (&optional path)
  (let ((path (or path (read-file-name "Scheme file: " nil nil t))))
    (let ((buffer (find-file-noselect path)))
      (when (and (buffer-modified-p buffer)
                 (y-or-n-p "Save buffer? "))
        (save-buffer buffer))
      (cons buffer path))))

(defun geiser-compile--display-result (title ret)
  (let ((err (geiser-eval--retort-error ret))
        (output (geiser-eval--retort-output ret)))
    (geiser-compile--with-buffer
      (erase-buffer)
      (insert title)
      (newline)
      (when output
        (insert output)
        (newline))
      (when err
        (insert "\n" (geiser-eval--error-msg err) "\n"))
      (goto-char (point-min)))
    (if (not err)
        (message "%s %s" title (if (> 0 (length output))
                                   (geiser--chomp output)
                                 (or (geiser-eval--retort-result ret)
                                     "OK!")))
      (message "")
      (geiser-compile--pop-to-buffer))))

(defun geiser-compile--file-op (path op msg)
  (let* ((b/p (geiser-compile--buffer/path path))
         (buffer (car b/p))
         (path (cdr b/p))
         (msg (format "%s %s ..." msg path)))
    (message msg)
    (geiser-compile--display-result
     msg (geiser-eval--send/wait `(:eval ((:ge ,op) ,path) (geiser emacs))))))


;;; User commands:

(defun geiser-compile-file (path)
  "Compile and load Scheme file."
  (interactive "FScheme file: ")
  (geiser-compile--file-op path 'compile-file "Compiling"))

(defun geiser-compile-current-buffer ()
  "Compile and load current Scheme file."
  (interactive)
  (geiser-compile-file (buffer-file-name (current-buffer))))

(defun geiser-load-file (path)
  "Load Scheme file."
  (interactive "FScheme file: ")
  (geiser-compile--file-op path 'load-file "Loading"))

(defun geiser-load-current-buffer ()
  "Load current Scheme file."
  (interactive)
  (geiser-load-file (buffer-file-name (current-buffer))))



(provide 'geiser-compile)
;;; geiser-compile.el ends here