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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.
87 lines
3 KiB
EmacsLisp
87 lines
3 KiB
EmacsLisp
;;; ob-forth.el --- Babel Functions for Forth -*- lexical-binding: t; -*-
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;; Copyright (C) 2014-2017 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research, forth
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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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;; Requires the gforth forth compiler and `forth-mode' (see below).
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;; https://www.gnu.org/software/gforth/
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;;; Requirements:
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;; Session evaluation requires the gforth forth compiler as well as
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;; `forth-mode' which is distributed with gforth (in gforth.el).
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;;; Code:
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(require 'ob)
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(declare-function forth-proc "ext:gforth" ())
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(declare-function org-trim "org" (s &optional keep-lead))
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(defvar org-babel-default-header-args:forth '((:session . "yes"))
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"Default header arguments for forth code blocks.")
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(defun org-babel-execute:forth (body params)
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"Execute a block of Forth code with org-babel.
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This function is called by `org-babel-execute-src-block'"
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(if (string= "none" (cdr (assq :session params)))
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(error "Non-session evaluation not supported for Forth code blocks")
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(let ((all-results (org-babel-forth-session-execute body params)))
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(if (member "output" (cdr (assq :result-params params)))
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(mapconcat #'identity all-results "\n")
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(car (last all-results))))))
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(defun org-babel-forth-session-execute (body params)
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(require 'forth-mode)
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(let ((proc (forth-proc))
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(rx " \\(\n:\\|compiled\n\\\|ok\n\\)")
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(result-start))
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(with-current-buffer (process-buffer (forth-proc))
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(mapcar (lambda (line)
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(setq result-start (progn (goto-char (process-mark proc))
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(point)))
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(comint-send-string proc (concat line "\n"))
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;; wait for forth to say "ok"
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(while (not (progn (goto-char result-start)
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(re-search-forward rx nil t)))
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(accept-process-output proc 0.01))
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(let ((case (match-string 1)))
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(cond
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((string= "ok\n" case)
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;; Collect intermediate output.
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(buffer-substring (+ result-start 1 (length line))
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(match-beginning 0)))
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((string= "compiled\n" case))
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;; Ignore partial compilation.
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((string= "\n:" case)
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;; Report errors.
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(org-babel-eval-error-notify 1
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(buffer-substring
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(+ (match-beginning 0) 1) (point-max))) nil))))
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(split-string (org-trim
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(org-babel-expand-body:generic body params))
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"\n"
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'omit-nulls)))))
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(provide 'ob-forth)
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;;; ob-forth.el ends here
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