bc511a64f6
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
213 lines
8.4 KiB
EmacsLisp
213 lines
8.4 KiB
EmacsLisp
;;; ob-haskell.el --- Babel Functions for Haskell -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2017 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 <https://www.gnu.org/licenses/>.
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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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;;
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;; - (optionally) lhs2tex :: http://people.cs.uu.nl/andres/lhs2tex/
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;;; Code:
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(require 'ob)
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(require 'comint)
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(declare-function org-remove-indentation "org" (code &optional n))
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(declare-function org-trim "org" (s &optional keep-lead))
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(declare-function haskell-mode "ext:haskell-mode" ())
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(declare-function run-haskell "ext:inf-haskell" (&optional arg))
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(declare-function inferior-haskell-load-file
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"ext:inf-haskell" (&optional reload))
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("haskell" . "hs"))
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(defvar org-babel-default-header-args:haskell
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'((:padlines . "no")))
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(defvar org-babel-haskell-lhs2tex-command "lhs2tex")
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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."
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(let* ((session (cdr (assq :session params)))
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(result-type (cdr (assq :result-type params)))
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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:haskell params)))
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(session (org-babel-haskell-initiate-session session params))
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(raw (org-babel-comint-with-output
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(session org-babel-haskell-eoe t full-body)
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(insert (org-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-strip-quotes
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(cdr (member org-babel-haskell-eoe
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(reverse (mapcar #'org-trim raw)))))))
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(org-babel-reassemble-table
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(let ((result
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(pcase result-type
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(`output (mapconcat #'identity (reverse (cdr results)) "\n"))
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(`value (car results)))))
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(org-babel-result-cond (cdr (assq :result-params params))
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result (org-babel-script-escape result)))
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(org-babel-pick-name (cdr (assq :colname-names params))
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(cdr (assq :colname-names params)))
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(org-babel-pick-name (cdr (assq :rowname-names params))
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(cdr (assq :rowname-names params))))))
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(defun org-babel-haskell-initiate-session (&optional _session _params)
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"Initiate a haskell session.
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If there is not a current inferior-process-buffer in SESSION
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then create one. Return the initialized session."
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(require 'inf-haskell)
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(or (get-buffer "*haskell*")
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(save-window-excursion (run-haskell) (sleep-for 0.25) (current-buffer))))
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(defun org-babel-load-session:haskell (session body params)
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"Load BODY into SESSION."
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(save-window-excursion
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(let* ((buffer (org-babel-prep-session:haskell session params))
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(load-file (concat (org-babel-temp-file "haskell-load-") ".hs")))
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(with-temp-buffer
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(insert body) (write-file load-file)
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(haskell-mode) (inferior-haskell-load-file))
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buffer)))
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(defun org-babel-prep-session:haskell (session params)
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"Prepare SESSION according to the header arguments in PARAMS."
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(save-window-excursion
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(let ((buffer (org-babel-haskell-initiate-session session)))
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(org-babel-comint-in-buffer buffer
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(mapc (lambda (line)
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(insert line)
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(comint-send-input nil t))
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(org-babel-variable-assignments:haskell params)))
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(current-buffer))))
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(defun org-babel-variable-assignments:haskell (params)
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"Return list of haskell statements assigning the block's variables."
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(mapcar (lambda (pair)
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(format "let %s = %s"
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(car pair)
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(org-babel-haskell-var-to-haskell (cdr pair))))
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(org-babel--get-vars params)))
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(defun org-babel-haskell-var-to-haskell (var)
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"Convert an elisp value VAR into a haskell variable.
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The elisp VAR is converted to a string of haskell source code
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specifying a variable of the same value."
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(if (listp var)
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(concat "[" (mapconcat #'org-babel-haskell-var-to-haskell var ", ") "]")
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(format "%S" var)))
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(defvar org-export-copy-to-kill-ring)
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(declare-function org-export-to-file "ox"
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(backend file
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&optional async subtreep visible-only body-only
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ext-plist post-process))
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(defun org-babel-haskell-export-to-lhs (&optional arg)
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"Export to a .lhs file with all haskell code blocks escaped.
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When called with a prefix argument the resulting
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.lhs file will be exported to a .tex file. This function will
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create two new files, base-name.lhs and base-name.tex where
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base-name is the name of the current Org file.
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Note that all standard Babel literate programming
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constructs (header arguments, no-web syntax etc...) are ignored."
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(interactive "P")
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(let* ((contents (buffer-string))
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(haskell-regexp
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(concat "^\\([ \t]*\\)#\\+begin_src[ \t]haskell*\\(.*\\)?[\r\n]"
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"\\([^\000]*?\\)[\r\n][ \t]*#\\+end_src.*"))
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(base-name (file-name-sans-extension (buffer-file-name)))
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(tmp-file (org-babel-temp-file "haskell-"))
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(tmp-org-file (concat tmp-file ".org"))
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(tmp-tex-file (concat tmp-file ".tex"))
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(lhs-file (concat base-name ".lhs"))
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(tex-file (concat base-name ".tex"))
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(command (concat org-babel-haskell-lhs2tex-command
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" " (org-babel-process-file-name lhs-file)
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" > " (org-babel-process-file-name tex-file)))
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(preserve-indentp org-src-preserve-indentation)
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indentation)
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;; escape haskell source-code blocks
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(with-temp-file tmp-org-file
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(insert contents)
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(goto-char (point-min))
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(while (re-search-forward haskell-regexp nil t)
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(save-match-data (setq indentation (length (match-string 1))))
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(replace-match (save-match-data
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(concat
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"#+begin_export latex\n\\begin{code}\n"
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(if (or preserve-indentp
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(string-match "-i" (match-string 2)))
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(match-string 3)
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(org-remove-indentation (match-string 3)))
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"\n\\end{code}\n#+end_export\n"))
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t t)
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(indent-code-rigidly (match-beginning 0) (match-end 0) indentation)))
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(save-excursion
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;; export to latex w/org and save as .lhs
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(require 'ox-latex)
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(find-file tmp-org-file)
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;; Ensure we do not clutter kill ring with incomplete results.
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(let (org-export-copy-to-kill-ring)
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(org-export-to-file 'latex tmp-tex-file))
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(kill-buffer nil)
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(delete-file tmp-org-file)
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(find-file tmp-tex-file)
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(goto-char (point-min)) (forward-line 2)
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(insert "%include polycode.fmt\n")
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;; ensure all \begin/end{code} statements start at the first column
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(while (re-search-forward "^[ \t]+\\\\begin{code}[^\000]+\\\\end{code}" nil t)
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(replace-match (save-match-data (org-remove-indentation (match-string 0)))
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t t))
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(setq contents (buffer-string))
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(save-buffer) (kill-buffer nil))
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(delete-file tmp-tex-file)
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;; save org exported latex to a .lhs file
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(with-temp-file lhs-file (insert contents))
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(if (not arg)
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(find-file lhs-file)
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;; process .lhs file with lhs2tex
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(message "running %s" command) (shell-command command) (find-file tex-file))))
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(provide 'ob-haskell)
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;;; ob-haskell.el ends here
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