;;; ob-coq.el --- Babel Functions for Coq -*- lexical-binding: t; -*-
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;; Copyright (C) 2010-2018 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: https://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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;; Rudimentary support for evaluating Coq code blocks. Currently only
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;; session evaluation is supported. Requires both coq.el and
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;; coq-inferior.el, both of which are distributed with Coq.
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;;
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;; http://coq.inria.fr/
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;;; Code:
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(require 'ob)
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(declare-function run-coq "ext:coq-inferior.el" (cmd))
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(declare-function coq-proc "ext:coq-inferior.el" ())
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(defvar coq-program-name "coqtop"
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"Name of the coq toplevel to run.")
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(defvar org-babel-coq-buffer "*coq*"
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"Buffer in which to evaluate coq code blocks.")
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(defun org-babel-coq-clean-prompt (string)
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(if (string-match "^[^[:space:]]+ < " string)
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(substring string 0 (match-beginning 0))
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string))
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(defun org-babel-execute:coq (body params)
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(let ((full-body (org-babel-expand-body:generic body params))
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(session (org-babel-coq-initiate-session))
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(pt (lambda ()
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(marker-position
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(process-mark (get-buffer-process (current-buffer)))))))
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(org-babel-coq-clean-prompt
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(org-babel-comint-in-buffer session
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(let ((start (funcall pt)))
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(with-temp-buffer
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(insert full-body)
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(comint-send-region (coq-proc) (point-min) (point-max))
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(comint-send-string (coq-proc)
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(if (string= (buffer-substring (- (point-max) 1) (point-max)) ".")
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"\n"
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".\n")))
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(while (equal start (funcall pt)) (sleep-for 0.1))
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(buffer-substring start (funcall pt)))))))
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(defun org-babel-coq-initiate-session ()
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"Initiate a coq session.
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If there is not a current inferior-process-buffer in SESSION then
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create one. Return the initialized session."
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(unless (fboundp 'run-coq)
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(error "`run-coq' not defined, load coq-inferior.el"))
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(save-window-excursion (run-coq coq-program-name))
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(sit-for 0.1)
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(get-buffer org-babel-coq-buffer))
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(provide 'ob-coq)
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