;;; ob-ocaml.el --- org-babel functions for ocaml evaluation ;; Copyright (C) 2009-2013 Free Software Foundation, Inc. ;; Author: Eric Schulte ;; Keywords: literate programming, reproducible research ;; Homepage: http://orgmode.org ;; 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 . ;;; 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 'comint) (eval-when-compile (require 'cl)) (declare-function tuareg-run-caml "ext:tuareg" ()) (declare-function tuareg-run-ocaml "ext:tuareg" ()) (declare-function tuareg-interactive-send-input "ext:tuareg" ()) (defvar org-babel-tangle-lang-exts) (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") (defcustom org-babel-ocaml-command "ocaml" "Name of the command for executing Ocaml code." :version "24.4" :package-version '(Org . "8.0") :group 'org-babel :type 'string) (defun org-babel-execute:ocaml (body params) "Execute a block of Ocaml code with Babel." (let* ((vars (mapcar #'cdr (org-babel-get-header params :var))) (full-body (org-babel-expand-body:generic body params (org-babel-variable-assignments:ocaml 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)";;\n"org-babel-ocaml-eoe-indicator)) (tuareg-interactive-send-input))) (clean (car (let ((re (regexp-quote org-babel-ocaml-eoe-output)) out) (delq nil (mapcar (lambda (line) (if out (progn (setq out nil) line) (when (string-match re line) (progn (setq out t) nil)))) (mapcar #'org-babel-trim (reverse raw)))))))) (org-babel-reassemble-table (let ((raw (org-babel-trim clean)) (result-params (cdr (assoc :result-params params)))) (org-babel-result-cond result-params ;; strip type information from output unless verbatim is specified (if (and (not (member "verbatim" result-params)) (string-match "= \\(.+\\)$" raw)) (match-string 1 raw) raw) (org-babel-ocaml-parse-output raw))) (org-babel-pick-name (cdr (assoc :colname-names params)) (cdr (assoc :colnames params))) (org-babel-pick-name (cdr (assoc :rowname-names params)) (cdr (assoc :rownames params)))))) (defvar tuareg-interactive-buffer-name) (defun org-babel-prep-session:ocaml (session params) "Prepare SESSION according to the header arguments in PARAMS." (require 'tuareg) (let ((tuareg-interactive-buffer-name (if (and (not (string= session "none")) (not (string= session "default")) (stringp session)) session tuareg-interactive-buffer-name))) (if (fboundp 'tuareg-run-process-if-needed) (tuareg-run-process-if-needed org-babel-ocaml-command) (tuareg-run-caml)) (get-buffer tuareg-interactive-buffer-name))) (defun org-babel-variable-assignments:ocaml (params) "Return list of ocaml statements assigning the block's variables." (mapcar (lambda (pair) (format "let %s = %s;;" (car pair) (org-babel-ocaml-elisp-to-ocaml (cdr pair)))) (mapcar #'cdr (org-babel-get-header params :var)))) (defun org-babel-ocaml-elisp-to-ocaml (val) "Return a string of ocaml code which evaluates to VAL." (if (listp val) (concat "[|" (mapconcat #'org-babel-ocaml-elisp-to-ocaml val "; ") "|]") (format "%S" val))) (defun org-babel-ocaml-parse-output (output) "Parse OUTPUT. OUTPUT is string output from an ocaml process." (let ((regexp "[^:]+ : %s = \\(.+\\)$")) (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) "Convert RESULTS into an elisp table or string. If the results look like a table, then convert them into an Emacs-lisp table, otherwise return the results as a string." (org-babel-script-escape (replace-regexp-in-string ";" "," results))) (defun org-babel-ocaml-read-array (results) "Convert RESULTS into an elisp table or string. If the results look like a table, then convert them into an Emacs-lisp table, otherwise return the results as a string." (org-babel-script-escape (replace-regexp-in-string "\\[|" "[" (replace-regexp-in-string "|\\]" "]" (replace-regexp-in-string "; " "," results))))) (provide 'ob-ocaml) ;;; ob-ocaml.el ends here