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145 lines
5.4 KiB
EmacsLisp
145 lines
5.4 KiB
EmacsLisp
;;; ob-ocaml.el --- org-babel functions for ocaml evaluation
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;; Copyright (C) 2009-2013 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating ocaml source code. This one will
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;; be sort of tricky because ocaml programs must be compiled before
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;; they can be run, but ocaml code can also be run through an
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;; interactive interpreter.
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;;
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;; For now lets only allow evaluation using the ocaml interpreter.
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;;; Requirements:
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;; - tuareg-mode :: http://www-rocq.inria.fr/~acohen/tuareg/
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;;; Code:
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(require 'ob)
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(require 'ob-comint)
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(require 'comint)
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(eval-when-compile (require 'cl))
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(declare-function tuareg-run-caml "ext:tuareg" ())
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(declare-function tuareg-interactive-send-input "ext:tuareg" ())
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("ocaml" . "ml"))
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(defvar org-babel-default-header-args:ocaml '())
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(defvar org-babel-ocaml-eoe-indicator "\"org-babel-ocaml-eoe\";;")
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(defvar org-babel-ocaml-eoe-output "org-babel-ocaml-eoe")
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(defun org-babel-execute:ocaml (body params)
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"Execute a block of Ocaml code with Babel."
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(let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
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(full-body (org-babel-expand-body:generic
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body params
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(org-babel-variable-assignments:ocaml params)))
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(session (org-babel-prep-session:ocaml
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(cdr (assoc :session params)) params))
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(raw (org-babel-comint-with-output
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(session org-babel-ocaml-eoe-output t full-body)
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(insert
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(concat
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(org-babel-chomp full-body)"\n"org-babel-ocaml-eoe-indicator))
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(tuareg-interactive-send-input)))
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(clean
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(car (let ((re (regexp-quote org-babel-ocaml-eoe-output)) out)
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(delq nil (mapcar (lambda (line)
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(if out
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(progn (setq out nil) line)
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(when (string-match re line)
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(progn (setq out t) nil))))
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(mapcar #'org-babel-trim (reverse raw))))))))
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(org-babel-reassemble-table
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(org-babel-ocaml-parse-output (org-babel-trim clean))
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(org-babel-pick-name
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(cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
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(org-babel-pick-name
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(cdr (assoc :rowname-names params)) (cdr (assoc :rownames params))))))
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(defvar tuareg-interactive-buffer-name)
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(defun org-babel-prep-session:ocaml (session params)
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"Prepare SESSION according to the header arguments in PARAMS."
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(require 'tuareg)
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(let ((tuareg-interactive-buffer-name (if (and (not (string= session "none"))
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(not (string= session "default"))
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(stringp session))
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session
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tuareg-interactive-buffer-name)))
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(save-window-excursion (tuareg-run-caml)
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(get-buffer tuareg-interactive-buffer-name))))
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(defun org-babel-variable-assignments:ocaml (params)
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"Return list of ocaml statements assigning the block's variables."
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(mapcar
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(lambda (pair) (format "let %s = %s;;" (car pair)
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(org-babel-ocaml-elisp-to-ocaml (cdr pair))))
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(mapcar #'cdr (org-babel-get-header params :var))))
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(defun org-babel-ocaml-elisp-to-ocaml (val)
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"Return a string of ocaml code which evaluates to VAL."
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(if (listp val)
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(concat "[|" (mapconcat #'org-babel-ocaml-elisp-to-ocaml val "; ") "|]")
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(format "%S" val)))
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(defun org-babel-ocaml-parse-output (output)
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"Parse OUTPUT.
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OUTPUT is string output from an ocaml process."
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(let ((regexp "%s = \\(.+\\)$"))
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(cond
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((string-match (format regexp "string") output)
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(org-babel-read (match-string 1 output)))
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((or (string-match (format regexp "int") output)
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(string-match (format regexp "float") output))
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(string-to-number (match-string 1 output)))
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((string-match (format regexp "list") output)
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(org-babel-ocaml-read-list (match-string 1 output)))
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((string-match (format regexp "array") output)
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(org-babel-ocaml-read-array (match-string 1 output)))
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(t (message "don't recognize type of %s" output) output))))
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(defun org-babel-ocaml-read-list (results)
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"Convert RESULTS into an elisp table or string.
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If the results look like a table, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(org-babel-script-escape (replace-regexp-in-string ";" "," results)))
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(defun org-babel-ocaml-read-array (results)
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"Convert RESULTS into an elisp table or string.
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If the results look like a table, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(org-babel-script-escape
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(replace-regexp-in-string
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"\\[|" "[" (replace-regexp-in-string
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"|\\]" "]" (replace-regexp-in-string
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"; " "," results)))))
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(provide 'ob-ocaml)
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;;; ob-ocaml.el ends here
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