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authorEric Schulte <schulte.eric@gmail.com>2010-08-27 18:01:24 -0600
committerEric Schulte <schulte.eric@gmail.com>2010-08-27 18:03:11 -0600
commitf6c09411a7a295230f8c033e54aadab14adf71e8 (patch)
tree5ece2e6f1dd425acf1d0128293a2ea0ea7bac4ca
parent4054eb0b9b834816f7941652864b9e42ea2a191b (diff)
downloadorg-mode-f6c09411a7a295230f8c033e54aadab14adf71e8.tar.gz
ob-scheme: very preliminary support for evaluating scheme code blocks
* Makefile (LISPF): adding ob-scheme.el to the makefile * lisp/ob-scheme.el: very preliminary support for evaluating scheme code blocks * lisp/org.el (org-babel-load-languages): adding scheme
-rw-r--r--Makefile3
-rw-r--r--lisp/ob-scheme.el97
-rw-r--r--lisp/org.el1
3 files changed, 100 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index ec22eef..1c1f317 100644
--- a/Makefile
+++ b/Makefile
@@ -150,7 +150,8 @@ LISPF = org.el \
ob-screen.el \
ob-plantuml.el \
ob-org.el \
- ob-js.el
+ ob-js.el \
+ ob-scheme.el
LISPFILES0 = $(LISPF:%=lisp/%)
LISPFILES = $(LISPFILES0) lisp/org-install.el
diff --git a/lisp/ob-scheme.el b/lisp/ob-scheme.el
new file mode 100644
index 0000000..452a940
--- /dev/null
+++ b/lisp/ob-scheme.el
@@ -0,0 +1,97 @@
+;;; ob-scheme.el --- org-babel functions for Scheme
+
+;; Copyright (C) 2010 Free Software Foundation
+
+;; Author: Eric Schulte
+;; Keywords: literate programming, reproducible research, scheme
+;; Homepage: http://orgmode.org
+;; Version: 0.01
+
+;;; License:
+
+;; This program 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, or (at your option)
+;; any later version.
+;;
+;; This program 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 GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; Now working with SBCL for both session and external evaluation.
+;;
+;; This certainly isn't optimally robust, but it seems to be working
+;; for the basic use cases.
+
+;;; Requirements:
+
+;; - a working scheme implementation
+;; (e.g. guile http://www.gnu.org/software/guile/guile.html)
+
+;;; Code:
+(require 'ob)
+(require 'ob-eval)
+
+(defvar org-babel-default-header-args:scheme '()
+ "Default header arguments for scheme code blocks.")
+
+(defcustom org-babel-scheme-cmd "guile"
+ "Name of command used to evaluate scheme blocks."
+ :group 'org-babel
+ :type 'string)
+
+(defun org-babel-expand-body:scheme (body params &optional processed-params)
+ "Expand BODY according to PARAMS, return the expanded body."
+ (let ((vars (nth 1 (or processed-params (org-babel-process-params params)))))
+ (if (> (length vars) 0)
+ (concat "(let ("
+ (mapconcat
+ (lambda (var) (format "%S" (print `(,(car var) ',(cdr var)))))
+ vars "\n ")
+ ")\n" body ")")
+ body)))
+
+(defun org-babel-execute:scheme (body params)
+ "Execute a block of Scheme code with org-babel.
+This function is called by `org-babel-execute-src-block'"
+ (let* ((processed-params (org-babel-process-params params))
+ (session (not (string= (nth 0 processed-params) "none")))
+ (result-type (nth 3 processed-params))
+ (full-body (org-babel-expand-body:scheme body params processed-params)))
+ (read
+ (if session
+ ;; session evaluation
+ (error "Scheme sessions are not yet supported.")
+ ;; external evaluation
+ (let ((script-file (org-babel-temp-file "lisp-script-")))
+ (with-temp-file script-file
+ (insert
+ ;; return the value or the output
+ (if (string= result-type "value")
+ (format "(display %s)" full-body)
+ full-body)))
+ (org-babel-eval
+ (format "%s %s" org-babel-scheme-cmd script-file) ""))))))
+
+(defun org-babel-prep-session:scheme (session params)
+ "Prepare SESSION according to the header arguments specified in PARAMS."
+ (error "not yet implemented"))
+
+(defun org-babel-scheme-initiate-session (&optional session)
+ "If there is not a current inferior-process-buffer in SESSION
+then create. Return the initialized session."
+ (error "Scheme sessions are not yet supported."))
+
+(provide 'ob-scheme)
+
+;; arch-tag: 6b2fe76f-4b25-4e87-ad1c-225b2f282a71
+
+;;; ob-scheme.el ends here
diff --git a/lisp/org.el b/lisp/org.el
index 39c7886..d85a170 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -167,6 +167,7 @@ requirements) is loaded."
(const :tag "Python" python)
(const :tag "Ruby" ruby)
(const :tag "Sass" sass)
+ (const :tag "Scheme" scheme)
(const :tag "Screen" screen)
(const :tag "Shell Script" sh)
(const :tag "Sql" sql)