lisp/ob-emacs-lisp.el

   1 ;;; ob-emacs-lisp.el --- org-babel functions for emacs-lisp code evaluation
   2
   3 ;; Copyright (C) 2009, 2010  Free Software Foundation, Inc
   4
   5 ;; Author: Eric Schulte
   6 ;; Keywords: literate programming, reproducible research
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 7.01trans
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs 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 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs 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.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;; Org-Babel support for evaluating emacs-lisp code
  28
  29 ;;; Code:
  30 (require 'ob)
  31 (eval-when-compile (require 'ob-comint))
  32
  33 (defvar org-babel-default-header-args:emacs-lisp
  34   '((:hlines . "yes") (:colnames . "no"))
  35   "Default arguments for evaluating an emacs-lisp source block.")
  36
  37 (declare-function orgtbl-to-generic "org-table" (table params))
  38
  39 (defun org-babel-expand-body:emacs-lisp (body params &optional processed-params)
  40   "Expand BODY according to PARAMS, return the expanded body."
  41   (let* ((processed-params (or processed-params
  42                                (org-babel-process-params params)))
  43          (vars (nth 1 processed-params))
  44          (result-params (nth 2 processed-params))
  45          (print-level nil) (print-length nil)
  46          (body (if (> (length vars) 0)
  47                    (concat "(let ("
  48                          (mapconcat
  49                           (lambda (var)
  50                             (format "%S" (print `(,(car var) ',(cdr var)))))
  51                           vars "\n      ")
  52                          ")\n" body ")")
  53                  body)))
  54     (if (or (member "code" result-params)
  55             (member "pp" result-params))
  56         (concat "(pp " body ")") body)))
  57
  58 (defun org-babel-execute:emacs-lisp (body params)
  59   "Execute a block of emacs-lisp code with Babel."
  60   (save-window-excursion
  61     (let ((processed-params (org-babel-process-params params)))
  62       (org-babel-reassemble-table
  63        (eval (read (format "(progn %s)"
  64                            (org-babel-expand-body:emacs-lisp
  65                             body params processed-params))))
  66        (org-babel-pick-name (nth 4 processed-params)
  67                             (cdr (assoc :colnames params)))
  68        (org-babel-pick-name (nth 5 processed-params)
  69                             (cdr (assoc :rownames params)))))))
  70
  71 (provide 'ob-emacs-lisp)
  72
  73 ;; arch-tag: e9a3acca-dc84-472a-9f5a-23c35befbcd6
  74
  75 ;;; ob-emacs-lisp.el ends here