109 lines
3.7 KiB
EmacsLisp
109 lines
3.7 KiB
EmacsLisp
|
;;; ob-calc.el --- org-babel functions for calc code evaluation
|
||
|
|
|
||
|
|
;; Copyright (C) 2010-2016 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
;; Author: 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:
|
||
|
|
|
||
|
|
;; Org-Babel support for evaluating calc code
|
||
|
|
|
||
|
|
;;; Code:
|
||
|
|
(require 'ob)
|
||
|
|
(require 'calc)
|
||
|
|
(unless (featurep 'xemacs)
|
||
|
|
(require 'calc-trail)
|
||
|
|
(require 'calc-store))
|
||
|
|
|
||
|
|
(declare-function calc-store-into "calc-store" (&optional var))
|
||
|
|
(declare-function calc-recall "calc-store" (&optional var))
|
||
|
|
(declare-function math-evaluate-expr "calc-ext" (x))
|
||
|
|
|
||
|
|
(defvar org-babel-default-header-args:calc nil
|
||
|
|
"Default arguments for evaluating an calc source block.")
|
||
|
|
|
||
|
|
(defun org-babel-expand-body:calc (body params)
|
||
|
|
"Expand BODY according to PARAMS, return the expanded body." body)
|
||
|
|
|
||
|
|
(defvar org--var-syms) ; Dynamically scoped from org-babel-execute:calc
|
||
|
|
|
||
|
|
(defun org-babel-execute:calc (body params)
|
||
|
|
"Execute a block of calc code with Babel."
|
||
|
|
(unless (get-buffer "*Calculator*")
|
||
|
|
(save-window-excursion (calc) (calc-quit)))
|
||
|
|
(let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
|
||
|
|
(org--var-syms (mapcar #'car vars))
|
||
|
|
(var-names (mapcar #'symbol-name org--var-syms)))
|
||
|
|
(mapc
|
||
|
|
(lambda (pair)
|
||
|
|
(calc-push-list (list (cdr pair)))
|
||
|
|
(calc-store-into (car pair)))
|
||
|
|
vars)
|
||
|
|
(mapc
|
||
|
|
(lambda (line)
|
||
|
|
(when (> (length line) 0)
|
||
|
|
(cond
|
||
|
|
;; simple variable name
|
||
|
|
((member line var-names) (calc-recall (intern line)))
|
||
|
|
;; stack operation
|
||
|
|
((string= "'" (substring line 0 1))
|
||
|
|
(funcall (lookup-key calc-mode-map (substring line 1)) nil))
|
||
|
|
;; complex expression
|
||
|
|
(t
|
||
|
|
(calc-push-list
|
||
|
|
(list (let ((res (calc-eval line)))
|
||
|
|
(cond
|
||
|
|
((numberp res) res)
|
||
|
|
((math-read-number res) (math-read-number res))
|
||
|
|
((listp res) (error "Calc error \"%s\" on input \"%s\""
|
||
|
|
(cadr res) line))
|
||
|
|
(t (replace-regexp-in-string
|
||
|
|
"'" ""
|
||
|
|
(calc-eval
|
||
|
|
(math-evaluate-expr
|
||
|
|
;; resolve user variables, calc built in
|
||
|
|
;; variables are handled automatically
|
||
|
|
;; upstream by calc
|
||
|
|
(mapcar #'org-babel-calc-maybe-resolve-var
|
||
|
|
;; parse line into calc objects
|
||
|
|
(car (math-read-exprs line)))))))))
|
||
|
|
))))))
|
||
|
|
(mapcar #'org-babel-trim
|
||
|
|
(split-string (org-babel-expand-body:calc body params) "[\n\r]"))))
|
||
|
|
(save-excursion
|
||
|
|
(with-current-buffer (get-buffer "*Calculator*")
|
||
|
|
(calc-eval (calc-top 1)))))
|
||
|
|
|
||
|
|
(defun org-babel-calc-maybe-resolve-var (el)
|
||
|
|
(if (consp el)
|
||
|
|
(if (and (equal 'var (car el)) (member (cadr el) org--var-syms))
|
||
|
|
(progn
|
||
|
|
(calc-recall (cadr el))
|
||
|
|
(prog1 (calc-top 1)
|
||
|
|
(calc-pop 1)))
|
||
|
|
(mapcar #'org-babel-calc-maybe-resolve-var el))
|
||
|
|
el))
|
||
|
|
|
||
|
|
(provide 'ob-calc)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
;;; ob-calc.el ends here
|