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| | ;;; ob-ocaml.el --- org-babel functions for ocaml evaluation
;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org
;; Version: 0.01
;; This file is part of GNU Emacs.
;; GNU Emacs 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 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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. If not, see <http://www.gnu.org/licenses/>.
;;; 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 'ob)
(require 'ob-comint)
(require 'comint)
(eval-when-compile (require 'cl))
(declare-function tuareg-run-caml "ext:taureg" ())
(add-to-list 'org-babel-tangle-lang-exts '("ocaml" . "ml"))
(defvar org-babel-default-header-args:ocaml '())
(defvar org-babel-ocaml-eoe-indicator "\"org-babel-ocaml-eoe\";;")
(defvar org-babel-ocaml-eoe-output "org-babel-ocaml-eoe")
(defun org-babel-ocaml-quote-item (itm)
(cond ((stringp itm)
(format "\"%s\"" itm))
(t
(format "%s" itm))))
(defun org-babel-ocaml-list-from-elisp (lst)
"Construct OCaml list from elisp list LST.
As LST is expected to be an org-mode table, the result will actually
be a list of n-tuples, such as [(1, 2, 3); (2, 3, 4)]."
(concat "["
(mapconcat
#'(lambda (itm)
(cond ((listp itm)
(concat "("
(mapconcat #'org-babel-ocaml-quote-item itm ", ")
")"))
((stringp itm)
(format "\"%s\"" itm))
(t
(format "%s" itm))))
lst "; ")
"]"))
(defun org-babel-ocaml-assign-elisp (name value colnames-p rownames-p)
"Construct OCaml code assigning the elisp VALUE to a variable named NAME."
(if (listp value)
(format "let %s = %s in\n"
name (org-babel-ocaml-list-from-elisp value))
(format "let %s = %s in\n" name value)))
(defun org-babel-expand-body:ocaml (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)))))
(concat
(mapconcat
(lambda (pair) (org-babel-ocaml-assign-elisp (car pair) (cdr pair) nil nil))
vars "\n") "\n" body "\n")))
(defun org-babel-execute:ocaml (body params)
"Execute a block of Ocaml code with org-babel."
(let* ((processed-params (org-babel-process-params params))
(vars (nth 1 processed-params))
(full-body (org-babel-expand-body:ocaml body params processed-params))
(session (org-babel-prep-session:ocaml
(cdr (assoc :session params)) params))
(raw (org-babel-comint-with-output
(session org-babel-ocaml-eoe-output t full-body)
(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-reassemble-table
(org-babel-ocaml-parse-output (org-babel-trim (car raw)))
(org-babel-pick-name (nth 4 processed-params) (cdr (assoc :colnames params)))
(org-babel-pick-name (nth 5 processed-params) (cdr (assoc :rownames params))))))
(defvar tuareg-interactive-buffer-name)
(defun org-babel-prep-session:ocaml (session params)
"Prepare SESSION according to the header arguments specified in PARAMS."
(require 'tuareg)
(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)
"Parse OUTPUT where OUTPUT is string output from an ocaml
process."
(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 'ob-ocaml)
;; arch-tag: 2e815f4d-365e-4d69-b1df-dd17fdd7b7b7
;;; ob-ocaml.el ends here
|