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[org-mode/org-kjn.git] / lisp / ob-ocaml.el
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1 ;;; ob-ocaml.el --- org-babel functions for ocaml evaluation
3 ;; Copyright (C) 2009-2011 Free Software Foundation, Inc.
5 ;; Author: Eric Schulte
6 ;; Keywords: literate programming, reproducible research
7 ;; Homepage: http://orgmode.org
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;; Org-Babel support for evaluating ocaml source code. This one will
27 ;; be sort of tricky because ocaml programs must be compiled before
28 ;; they can be run, but ocaml code can also be run through an
29 ;; interactive interpreter.
31 ;; For now lets only allow evaluation using the ocaml interpreter.
33 ;;; Requirements:
35 ;; - tuareg-mode :: http://www-rocq.inria.fr/~acohen/tuareg/
37 ;;; Code:
38 (require 'ob)
39 (require 'ob-comint)
40 (require 'comint)
41 (eval-when-compile (require 'cl))
43 (declare-function tuareg-run-caml "ext:tuareg" ())
44 (declare-function tuareg-interactive-send-input "ext:tuareg" ())
46 (defvar org-babel-tangle-lang-exts)
47 (add-to-list 'org-babel-tangle-lang-exts '("ocaml" . "ml"))
49 (defvar org-babel-default-header-args:ocaml '())
51 (defvar org-babel-ocaml-eoe-indicator "\"org-babel-ocaml-eoe\";;")
52 (defvar org-babel-ocaml-eoe-output "org-babel-ocaml-eoe")
54 (defun org-babel-execute:ocaml (body params)
55 "Execute a block of Ocaml code with Babel."
56 (let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
57 (full-body (org-babel-expand-body:generic
58 body params
59 (org-babel-variable-assignments:ocaml params)))
60 (session (org-babel-prep-session:ocaml
61 (cdr (assoc :session params)) params))
62 (raw (org-babel-comint-with-output
63 (session org-babel-ocaml-eoe-output t full-body)
64 (insert
65 (concat
66 (org-babel-chomp full-body)"\n"org-babel-ocaml-eoe-indicator))
67 (tuareg-interactive-send-input)))
68 (clean
69 (car (let ((re (regexp-quote org-babel-ocaml-eoe-output)) out)
70 (delq nil (mapcar (lambda (line)
71 (if out
72 (progn (setq out nil) line)
73 (when (string-match re line)
74 (progn (setq out t) nil))))
75 (mapcar #'org-babel-trim (reverse raw))))))))
76 (org-babel-reassemble-table
77 (org-babel-ocaml-parse-output (org-babel-trim clean))
78 (org-babel-pick-name
79 (cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
80 (org-babel-pick-name
81 (cdr (assoc :rowname-names params)) (cdr (assoc :rownames params))))))
83 (defvar tuareg-interactive-buffer-name)
84 (defun org-babel-prep-session:ocaml (session params)
85 "Prepare SESSION according to the header arguments in PARAMS."
86 (require 'tuareg)
87 (let ((tuareg-interactive-buffer-name (if (and (not (string= session "none"))
88 (not (string= session "default"))
89 (stringp session))
90 session
91 tuareg-interactive-buffer-name)))
92 (save-window-excursion (tuareg-run-caml)
93 (get-buffer tuareg-interactive-buffer-name))))
95 (defun org-babel-variable-assignments:ocaml (params)
96 "Return list of ocaml statements assigning the block's variables"
97 (mapcar
98 (lambda (pair) (format "let %s = %s;;" (car pair)
99 (org-babel-ocaml-elisp-to-ocaml (cdr pair))))
100 (mapcar #'cdr (org-babel-get-header params :var))))
102 (defun org-babel-ocaml-elisp-to-ocaml (val)
103 "Return a string of ocaml code which evaluates to VAL."
104 (if (listp val)
105 (concat "[|" (mapconcat #'org-babel-ocaml-elisp-to-ocaml val "; ") "|]")
106 (format "%S" val)))
108 (defun org-babel-ocaml-parse-output (output)
109 "Parse OUTPUT.
110 OUTPUT is string output from an ocaml process."
111 (let ((regexp "%s = \\(.+\\)$"))
112 (cond
113 ((string-match (format regexp "string") output)
114 (org-babel-read (match-string 1 output)))
115 ((or (string-match (format regexp "int") output)
116 (string-match (format regexp "float") output))
117 (string-to-number (match-string 1 output)))
118 ((string-match (format regexp "list") output)
119 (org-babel-ocaml-read-list (match-string 1 output)))
120 ((string-match (format regexp "array") output)
121 (org-babel-ocaml-read-array (match-string 1 output)))
122 (t (message "don't recognize type of %s" output) output))))
124 (defun org-babel-ocaml-read-list (results)
125 "Convert RESULTS into an elisp table or string.
126 If the results look like a table, then convert them into an
127 Emacs-lisp table, otherwise return the results as a string."
128 (org-babel-script-escape (replace-regexp-in-string ";" "," results)))
130 (defun org-babel-ocaml-read-array (results)
131 "Convert RESULTS into an elisp table or string.
132 If the results look like a table, then convert them into an
133 Emacs-lisp table, otherwise return the results as a string."
134 (org-babel-script-escape
135 (replace-regexp-in-string
136 "\\[|" "[" (replace-regexp-in-string
137 "|\\]" "]" (replace-regexp-in-string
138 "; " "," results)))))
140 (provide 'ob-ocaml)
144 ;;; ob-ocaml.el ends here