lisp/ob-lisp.el

   1 ;;; ob-lisp.el --- org-babel functions for Common Lisp
   2
   3 ;; Copyright (C) 2010 Free Software Foundation
   4
   5 ;; Author: David T. O'Toole <dto@gnu.org>, Eric Schulte
   6 ;; Keywords: literate programming, reproducible research, lisp
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 7.4
   9
  10 ;;; License:
  11
  12 ;; This program is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 3, or (at your option)
  15 ;; any later version.
  16 ;;
  17 ;; This program is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21 ;;
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  25 ;; Boston, MA 02110-1301, USA.
  26
  27 ;;; Commentary:
  28
  29 ;; Now working with SBCL for both session and external evaluation.
  30 ;;
  31 ;; This certainly isn't optimally robust, but it seems to be working
  32 ;; for the basic use cases.
  33
  34 ;;; Requirements:
  35
  36 ;; Requires SLIME (Superior Lisp Interaction Mode for Emacs.)
  37 ;; See http://common-lisp.net/project/slime/
  38
  39 ;;; Code:
  40 (require 'ob)
  41 (require 'ob-ref)
  42 (require 'ob-comint)
  43 (require 'ob-eval)
  44
  45 (declare-function slime-eval "ext:slime" (sexp &optional package))
  46 (declare-function slime-process "ext:slime" (&optional connection))
  47 (declare-function slime-connected-p "ext:slime" ())
  48
  49 (defvar org-babel-default-header-args:lisp '()
  50   "Default header arguments for lisp code blocks.")
  51
  52 (defcustom org-babel-lisp-cmd "sbcl --script"
  53   "Name of command used to evaluate lisp blocks."
  54   :group 'org-babel
  55   :type 'string)
  56
  57 (defun org-babel-expand-body:lisp (body params)
  58   "Expand BODY according to PARAMS, return the expanded body."
  59   (let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
  60     (if (> (length vars) 0)
  61         (concat "(let ("
  62                 (mapconcat
  63                  (lambda (var) (format "%S" (print `(,(car var) ',(cdr var)))))
  64                  vars "\n      ")
  65                 ")\n" body ")")
  66       body)))
  67
  68 (defun org-babel-execute:lisp (body params)
  69   "Execute a block of Lisp code with org-babel.
  70 This function is called by `org-babel-execute-src-block'"
  71   (require 'slime)
  72   (message "executing Lisp source code block")
  73   (let* ((session (org-babel-lisp-initiate-session
  74                    (cdr (assoc :session params))))
  75          (result-type (cdr (assoc :result-type params)))
  76          (full-body (org-babel-expand-body:lisp body params)))
  77     (read
  78      (if session
  79          ;; session evaluation
  80          (save-window-excursion
  81            (cadr (slime-eval `(swank:eval-and-grab-output ,full-body))))
  82        ;; external evaluation
  83        (let ((script-file (org-babel-temp-file "lisp-script-")))
  84          (with-temp-file script-file
  85            (insert
  86             ;; return the value or the output
  87             (if (string= result-type "value")
  88                 (format "(print %s)" full-body)
  89               full-body)))
  90          (org-babel-eval
  91           (format "%s %s" org-babel-lisp-cmd
  92                   (org-babel-process-file-name script-file)) ""))))))
  93
  94 ;; This function should be used to assign any variables in params in
  95 ;; the context of the session environment.
  96 (defun org-babel-prep-session:lisp (session params)
  97   "Prepare SESSION according to the header arguments specified in PARAMS."
  98   (error "not yet implemented"))
  99
 100 (defun org-babel-lisp-initiate-session (&optional session)
 101   "If there is not a current inferior-process-buffer in SESSION
 102 then create.  Return the initialized session."
 103   (require 'slime)
 104   (unless (string= session "none")
 105     (save-window-excursion
 106       (or (slime-connected-p)
 107           (slime-process)))))
 108
 109 (provide 'ob-lisp)
 110
 111 ;; arch-tag: 18086168-009f-4947-bbb5-3532375d851d
 112
 113 ;;; ob-lisp.el ends here