| commit | author | age | ||
| 76bbd0 | 1 | ;;; ob-forth.el --- Babel Functions for Forth -*- lexical-binding: t; -*- |
| C | 2 | |
| 3 | ;; Copyright (C) 2014-2018 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | ;; Author: Eric Schulte | |
| 6 | ;; Keywords: literate programming, reproducible research, forth | |
| 7 | ;; Homepage: https://orgmode.org | |
| 8 | ||
| 9 | ;; This file is part of GNU Emacs. | |
| 10 | ||
| 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
| 12 | ;; it under the terms of the GNU General Public License as published by | |
| 13 | ;; the Free Software Foundation, either version 3 of the License, or | |
| 14 | ;; (at your option) any later version. | |
| 15 | ||
| 16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 | ;; GNU General Public License for more details. | |
| 20 | ||
| 21 | ;; You should have received a copy of the GNU General Public License | |
| 22 | ;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. | |
| 23 | ||
| 24 | ;;; Commentary: | |
| 25 | ||
| 26 | ;; Requires the gforth forth compiler and `forth-mode' (see below). | |
| 27 | ;; https://www.gnu.org/software/gforth/ | |
| 28 | ||
| 29 | ;;; Requirements: | |
| 30 | ||
| 31 | ;; Session evaluation requires the gforth forth compiler as well as | |
| 32 | ;; `forth-mode' which is distributed with gforth (in gforth.el). | |
| 33 | ||
| 34 | ;;; Code: | |
| 35 | (require 'ob) | |
| 36 | ||
| 37 | (declare-function forth-proc "ext:gforth" ()) | |
| 38 | (declare-function org-trim "org" (s &optional keep-lead)) | |
| 39 | ||
| 40 | (defvar org-babel-default-header-args:forth '((:session . "yes")) | |
| 41 | "Default header arguments for forth code blocks.") | |
| 42 | ||
| 43 | (defun org-babel-execute:forth (body params) | |
| 44 | "Execute a block of Forth code with org-babel. | |
| 45 | This function is called by `org-babel-execute-src-block'" | |
| 46 | (if (string= "none" (cdr (assq :session params))) | |
| 47 | (error "Non-session evaluation not supported for Forth code blocks") | |
| 48 | (let ((all-results (org-babel-forth-session-execute body params))) | |
| 49 | (if (member "output" (cdr (assq :result-params params))) | |
| 50 | (mapconcat #'identity all-results "\n") | |
| 51 | (car (last all-results)))))) | |
| 52 | ||
| 53 | (defun org-babel-forth-session-execute (body params) | |
| 54 | (require 'forth-mode) | |
| 55 | (let ((proc (forth-proc)) | |
| 56 | (rx " \\(\n:\\|compiled\n\\\|ok\n\\)") | |
| 57 | (result-start)) | |
| 58 | (with-current-buffer (process-buffer (forth-proc)) | |
| 59 | (mapcar (lambda (line) | |
| 60 | (setq result-start (progn (goto-char (process-mark proc)) | |
| 61 | (point))) | |
| 62 | (comint-send-string proc (concat line "\n")) | |
| 63 | ;; wait for forth to say "ok" | |
| 64 | (while (not (progn (goto-char result-start) | |
| 65 | (re-search-forward rx nil t))) | |
| 66 | (accept-process-output proc 0.01)) | |
| 67 | (let ((case (match-string 1))) | |
| 68 | (cond | |
| 69 | ((string= "ok\n" case) | |
| 70 | ;; Collect intermediate output. | |
| 71 | (buffer-substring (+ result-start 1 (length line)) | |
| 72 | (match-beginning 0))) | |
| 73 | ((string= "compiled\n" case)) | |
| 74 | ;; Ignore partial compilation. | |
| 75 | ((string= "\n:" case) | |
| 76 | ;; Report errors. | |
| 77 | (org-babel-eval-error-notify 1 | |
| 78 | (buffer-substring | |
| 79 | (+ (match-beginning 0) 1) (point-max))) nil)))) | |
| 80 | (split-string (org-trim | |
| 81 | (org-babel-expand-body:generic body params)) | |
| 82 | "\n" | |
| 83 | 'omit-nulls))))) | |
| 84 | ||
| 85 | (provide 'ob-forth) | |
| 86 | ||
| 87 | ;;; ob-forth.el ends here | |
