adding support for Haskell
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;;; org-babel-haskell.el --- org-babel functions for haskell evaluation
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;; Copyright (C) 2009 Eric Schulte
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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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;; Version: 0.01
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;;; License:
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;; This program 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, or (at your option)
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;; any later version.
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;;
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;; This program 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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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; Org-Babel support for evaluating haskell source code. This one will
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;; be sort of tricky because haskell programs must be compiled before
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;; they can be run, but haskell 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 haskell interpreter.
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;;; Requirements:
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;; - haskell-mode :: http://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode
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;;
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;; - inf-haskell :: http://www.iro.umontreal.ca/~monnier/elisp/#haskell-mode
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;;; Code:
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(require 'org-babel)
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(require 'haskell-mode)
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(require 'inf-haskell)
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(org-babel-add-interpreter "haskell")
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(add-to-list 'org-babel-tangle-langs '("haskell" "hs"))
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(defvar org-babel-haskell-eoe "\"org-babel-haskell-eoe\"")
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(defun org-babel-execute:haskell (body params)
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"Execute a block of Haskell code with org-babel. This function
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is called by `org-babel-execute-src-block' with the following
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variables pre-set using `multiple-value-bind'.
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(session vars result-params result-type)"
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(message "executing haskell source code block")
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(let* ((full-body (concat
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(mapconcat
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(lambda (pair) (format "let %s = %s;" (car pair) (cdr pair)))
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vars "\n") "\n" body "\n"))
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(session (org-babel-prep-session:haskell session params))
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(raw (org-babel-comint-with-output session org-babel-haskell-eoe t
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(insert (org-babel-trim full-body))
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(comint-send-input nil t)
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(insert org-babel-haskell-eoe)
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(comint-send-input nil t)))
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(results (mapcar
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#'org-babel-haskell-read-string
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(cdr (member org-babel-haskell-eoe
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(reverse (mapcar #'org-babel-trim raw)))))))
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(case result-type
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(output (mapconcat #'identity (reverse (cdr results)) "\n"))
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(value (org-babel-haskell-table-or-string (car results))))))
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(defun org-babel-haskell-read-string (string)
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"Strip \\\"s from around haskell string"
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(if (string-match "\"\\([^\000]+\\)\"" string)
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(match-string 1 string)
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string))
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(defun org-babel-prep-session:haskell (session params)
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"Prepare SESSION according to the header arguments specified in PARAMS."
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(save-window-excursion (run-haskell) (current-buffer)))
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(defun org-babel-haskell-table-or-string (results)
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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-read
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(if (and (stringp results) (string-match "^\\[.+\\]$" results))
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(org-babel-read
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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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"," " " (replace-regexp-in-string
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"'" "\"" results)))))
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results)))
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(provide 'org-babel-haskell)
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;;; org-babel-haskell.el ends here
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@ -86,9 +86,10 @@ which is viewable through the web browser.
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;; (require 'org-babel-ditaa) ;; ditaa
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;; (require 'org-babel-dot) ;; dot
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;; (require 'org-babel-gnuplot) ;; gnuplot, and gnuplot-mode
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;; (require 'org-babel-haskell) ;; haskell, haskell-mode, inf-haskell
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;; (require 'org-babel-ocaml) ;; ocaml, and tuareg-mode
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;; (require 'org-babel-python) ;; python, and python-mode
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;; (require 'org-babel-ruby) ;; ruby, irb, ruby-mode, and inf-ruby mode
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;; (require 'org-babel-ruby) ;; ruby, irb, ruby-mode, and inf-ruby
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;; (require 'org-babel-sass) ;; sass, sass-mode
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;; (require 'org-babel-sql) ;; none
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;;
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@ -2722,7 +2722,7 @@ This is currently working only with emacs lisp as in the following
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example in the [[* emacs lisp source reference][emacs lisp source reference]].
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** TODO Add languages [11/15]
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** TODO Add languages [12/16]
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I'm sure there are many more that aren't listed here. Please add
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them, and bubble any that you particularly care about up to the top.
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@ -2730,6 +2730,29 @@ Any new language should be implemented in a org-babel-lang.el file.
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Follow the pattern set by [[file:lisp/org-babel-script.el][org-babel-script.el]], [[file:lisp/org-babel-shell.el][org-babel-shell.el]] and
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[[file:lisp/org-babel-R.el][org-babel-R.el]].
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*** DONE Haskell
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#+begin_src haskell
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"hello Haskell"
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#+end_src
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#+resname:
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: hello Haskell
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#+begin_src haskell
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let fac n = if n == 0 then 1 else n * fac (n - 1)
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fac 4
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#+end_src
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#+resname:
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: 24
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#+begin_src haskell
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[1, 2, 3, 4, 5]
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#+end_src
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#+resname:
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| 1 | 2 | 3 | 4 | 5 |
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*** STARTED ocaml [2/3]
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- [X] Working for the simple case (no arguments, simple output)
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