190 lines
7.9 KiB
EmacsLisp
190 lines
7.9 KiB
EmacsLisp
;;; ob-picolisp.el --- org-babel functions for picolisp evaluation
|
|
|
|
;; Copyright (C) 2010-2016 Free Software Foundation, Inc.
|
|
|
|
;; Authors: Thorsten Jolitz
|
|
;; Eric Schulte
|
|
;; Keywords: literate programming, reproducible research
|
|
;; Homepage: http://orgmode.org
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software: you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation, either version 3 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This library enables the use of PicoLisp in the multi-language
|
|
;; programming framework Org-Babel. PicoLisp is a minimal yet
|
|
;; fascinating lisp dialect and a highly productive application
|
|
;; framework for web-based client-server applications on top of
|
|
;; object-oriented databases. A good way to learn PicoLisp is to first
|
|
;; read Paul Grahams essay "The hundred year language"
|
|
;; (http://www.paulgraham.com/hundred.html) and then study the various
|
|
;; documents and essays published in the PicoLisp wiki
|
|
;; (http://picolisp.com/5000/-2.html). PicoLisp is included in some
|
|
;; GNU/Linux Distributions, and can be downloaded here:
|
|
;; http://software-lab.de/down.html. It ships with a picolisp-mode and
|
|
;; a inferior-picolisp-mode for Emacs (to be found in the /lib/el/
|
|
;; directory).
|
|
|
|
;; Although it might seem more natural to use Emacs Lisp for most
|
|
;; Lisp-based programming tasks inside Org-Mode, an Emacs library
|
|
;; written in Emacs Lisp, PicoLisp has at least two outstanding
|
|
;; features that make it a valuable addition to Org-Babel:
|
|
|
|
;; PicoLisp _is_ an object-oriented database with a Prolog-based query
|
|
;; language implemented in PicoLisp (Pilog). Database objects are
|
|
;; first-class members of the language.
|
|
|
|
;; PicoLisp is an extremely productive framework for the development
|
|
;; of interactive web-applications (on top of a database).
|
|
|
|
;;; Requirements:
|
|
|
|
;;; Code:
|
|
(require 'ob)
|
|
(require 'comint)
|
|
(eval-when-compile (require 'cl))
|
|
|
|
(declare-function run-picolisp "ext:inferior-picolisp" (cmd))
|
|
(defvar org-babel-tangle-lang-exts) ;; Autoloaded
|
|
|
|
;; optionally define a file extension for this language
|
|
(add-to-list 'org-babel-tangle-lang-exts '("picolisp" . "l"))
|
|
|
|
;;; interferes with settings in org-babel buffer?
|
|
;; optionally declare default header arguments for this language
|
|
;; (defvar org-babel-default-header-args:picolisp
|
|
;; '((:colnames . "no"))
|
|
;; "Default arguments for evaluating a picolisp source block.")
|
|
|
|
(defvar org-babel-picolisp-eoe "org-babel-picolisp-eoe"
|
|
"String to indicate that evaluation has completed.")
|
|
|
|
(defcustom org-babel-picolisp-cmd "pil"
|
|
"Name of command used to evaluate picolisp blocks."
|
|
:group 'org-babel
|
|
:version "24.1"
|
|
:type 'string)
|
|
|
|
(defun org-babel-expand-body:picolisp (body params)
|
|
"Expand BODY according to PARAMS, return the expanded body."
|
|
(let ((vars (mapcar #'cdr (org-babel-get-header params :var)))
|
|
(result-params (cdr (assoc :result-params params)))
|
|
(print-level nil) (print-length nil))
|
|
(if (> (length vars) 0)
|
|
(concat "(prog (let ("
|
|
(mapconcat
|
|
(lambda (var)
|
|
(format "%S '%S)"
|
|
(print (car var))
|
|
(print (cdr var))))
|
|
vars "\n ")
|
|
" \n" body ") )")
|
|
body)))
|
|
|
|
(defun org-babel-execute:picolisp (body params)
|
|
"Execute a block of Picolisp code with org-babel. This function is
|
|
called by `org-babel-execute-src-block'"
|
|
(message "executing Picolisp source code block")
|
|
(let* (
|
|
;; Name of the session or "none".
|
|
(session-name (cdr (assoc :session params)))
|
|
;; Set the session if the session variable is non-nil.
|
|
(session (org-babel-picolisp-initiate-session session-name))
|
|
;; Either OUTPUT or VALUE which should behave as described above.
|
|
(result-type (cdr (assoc :result-type params)))
|
|
(result-params (cdr (assoc :result-params params)))
|
|
;; Expand the body with `org-babel-expand-body:picolisp'.
|
|
(full-body (org-babel-expand-body:picolisp body params))
|
|
;; Wrap body appropriately for the type of evaluation and results.
|
|
(wrapped-body
|
|
(cond
|
|
((or (member "code" result-params)
|
|
(member "pp" result-params))
|
|
(format "(pretty (out \"/dev/null\" %s))" full-body))
|
|
((and (member "value" result-params) (not session))
|
|
(format "(print (out \"/dev/null\" %s))" full-body))
|
|
((member "value" result-params)
|
|
(format "(out \"/dev/null\" %s)" full-body))
|
|
(t full-body)))
|
|
(result
|
|
(if (not (string= session-name "none"))
|
|
;; Session based evaluation.
|
|
(mapconcat ;; <- joins the list back into a single string
|
|
#'identity
|
|
(butlast ;; <- remove the org-babel-picolisp-eoe line
|
|
(delq nil
|
|
(mapcar
|
|
(lambda (line)
|
|
(org-babel-chomp ;; Remove trailing newlines.
|
|
(when (> (length line) 0) ;; Remove empty lines.
|
|
(cond
|
|
;; Remove leading "-> " from return values.
|
|
((and (>= (length line) 3)
|
|
(string= "-> " (substring line 0 3)))
|
|
(substring line 3))
|
|
;; Remove trailing "-> <<return-value>>" on the
|
|
;; last line of output.
|
|
((and (member "output" result-params)
|
|
(string-match-p "->" line))
|
|
(substring line 0 (string-match "->" line)))
|
|
(t line)
|
|
)
|
|
;;(if (and (>= (length line) 3);Remove leading "<-"
|
|
;; (string= "-> " (substring line 0 3)))
|
|
;; (substring line 3)
|
|
;; line)
|
|
)))
|
|
;; Returns a list of the output of each evaluated exp.
|
|
(org-babel-comint-with-output
|
|
(session org-babel-picolisp-eoe)
|
|
(insert wrapped-body) (comint-send-input)
|
|
(insert "'" org-babel-picolisp-eoe)
|
|
(comint-send-input)))))
|
|
"\n")
|
|
;; external evaluation
|
|
(let ((script-file (org-babel-temp-file "picolisp-script-")))
|
|
(with-temp-file script-file
|
|
(insert (concat wrapped-body "(bye)")))
|
|
(org-babel-eval
|
|
(format "%s %s"
|
|
org-babel-picolisp-cmd
|
|
(org-babel-process-file-name script-file))
|
|
"")))))
|
|
(org-babel-result-cond result-params
|
|
result
|
|
(read result))))
|
|
|
|
(defun org-babel-picolisp-initiate-session (&optional session-name)
|
|
"If there is not a current inferior-process-buffer in SESSION
|
|
then create. Return the initialized session."
|
|
(unless (string= session-name "none")
|
|
(require 'inferior-picolisp)
|
|
;; provide a reasonable default session name
|
|
(let ((session (or session-name "*inferior-picolisp*")))
|
|
;; check if we already have a live session by this name
|
|
(if (org-babel-comint-buffer-livep session)
|
|
(get-buffer session)
|
|
(save-window-excursion
|
|
(run-picolisp org-babel-picolisp-cmd)
|
|
(rename-buffer session-name)
|
|
(current-buffer))))))
|
|
|
|
(provide 'ob-picolisp)
|
|
|
|
|
|
|
|
;;; ob-picolisp.el ends here
|