org-mode/contrib/babel/lisp/langs/org-babel-ocaml.el

120 lines
4.8 KiB
EmacsLisp

;;; org-babel-ocaml.el --- org-babel functions for ocaml evaluation
;; Copyright (C) 2009 Eric Schulte
;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; 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:
;; Org-Babel support for evaluating ocaml source code. This one will
;; be sort of tricky because ocaml programs must be compiled before
;; they can be run, but ocaml code can also be run through an
;; interactive interpreter.
;;
;; For now lets only allow evaluation using the ocaml interpreter.
;;; Requirements:
;; - tuareg-mode :: http://www-rocq.inria.fr/~acohen/tuareg/
;;; Code:
(require 'org-babel)
(require 'tuareg)
(org-babel-add-interpreter "ocaml")
(add-to-list 'org-babel-tangle-langs '("ocaml" "ml"))
(defvar org-babel-ocaml-eoe-indicator "\"org-babel-ocaml-eoe\";;")
(defvar org-babel-ocaml-eoe-output "org-babel-ocaml-eoe")
(defun org-babel-execute:ocaml (body params)
"Execute a block of Ocaml code with org-babel."
(message "executing ocaml source code block")
(let* ((processed-params (org-babel-process-params params))
(vars (second processed-params))
(full-body (concat
(mapconcat
(lambda (pair) (format "let %s = %s;" (car pair) (cdr pair)))
vars "\n") "\n" body "\n"))
(session (org-babel-prep-session:ocaml session params))
(raw (org-babel-comint-with-output session org-babel-ocaml-eoe-output t
(insert (concat (org-babel-chomp full-body) " ;;"))
(comint-send-input nil t)
(insert org-babel-ocaml-eoe-indicator)
(comint-send-input nil t))))
(org-babel-ocaml-parse-output (org-babel-trim (car raw)))))
(defun org-babel-prep-session:ocaml (session params)
"Prepare SESSION according to the header arguments specified in PARAMS."
(let ((tuareg-interactive-buffer-name (if (and (not (string= session "none"))
(not (string= session "default"))
(stringp session))
session
tuareg-interactive-buffer-name)))
(save-window-excursion (tuareg-run-caml)
(get-buffer tuareg-interactive-buffer-name))))
(defun org-babel-ocaml-parse-output (output)
(let ((regexp "%s = \\(.+\\)$"))
(cond
((string-match (format regexp "string") output)
(org-babel-read (match-string 1 output)))
((or (string-match (format regexp "int") output)
(string-match (format regexp "float") output))
(string-to-number (match-string 1 output)))
((string-match (format regexp "list") output)
(org-babel-ocaml-read-list (match-string 1 output)))
((string-match (format regexp "array") output)
(org-babel-ocaml-read-array (match-string 1 output)))
(t (message "don't recognize type of %s" output) output))))
(defun org-babel-ocaml-read-list (results)
"If the results look like a table, then convert them into an
Emacs-lisp table, otherwise return the results as a string."
(org-babel-read
(if (and (stringp results) (string-match "^\\[.+\\]$" results))
(org-babel-read
(replace-regexp-in-string
"\\[" "(" (replace-regexp-in-string
"\\]" ")" (replace-regexp-in-string
"; " " " (replace-regexp-in-string
"'" "\"" results)))))
results)))
(defun org-babel-ocaml-read-array (results)
"If the results look like a table, then convert them into an
Emacs-lisp table, otherwise return the results as a string."
(org-babel-read
(if (and (stringp results) (string-match "^\\[.+\\]$" results))
(org-babel-read
(replace-regexp-in-string
"\\[|" "(" (replace-regexp-in-string
"|\\]" ")" (replace-regexp-in-string
"; " " " (replace-regexp-in-string
"'" "\"" results)))))
results)))
(provide 'org-babel-ocaml)
;;; org-babel-ocaml.el ends here