-;;; calculator.el --- a [not so] simple calculator for Emacs
+;;; calculator.el --- a [not so] simple calculator for Emacs -*- lexical-binding: t -*-
-;; Copyright (C) 1998, 2000-2011 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 2000-2013 Free Software Foundation, Inc.
;; Author: Eli Barzilay <eli@barzilay.org>
;; Keywords: tools, convenience
;;; History:
;; I hate history.
-(eval-when-compile (require 'cl))
-
;;;=====================================================================
;;; Customization:
(defcustom calculator-prompt "Calc=%s> "
"The prompt used by the Emacs calculator.
-It should contain a \"%s\" somewhere that will indicate the i/o radixes;
+It should contain a \"%s\" somewhere that will indicate the i/o radices;
this will be a two-character string as described in the documentation
for `calculator-mode'."
:type 'string
be the name of a one-argument function, a string is used with a single
argument and an expression will be evaluated with the variable `num'
bound to whatever should be displayed. If it is a function symbol, it
-should be able to handle special symbol arguments, currently 'left and
-'right which will be sent by special keys to modify display parameters
+should be able to handle special symbol arguments, currently `left' and
+`right' which will be sent by special keys to modify display parameters
associated with the displayer function (for example to change the number
of digits displayed).
;;;=====================================================================
;;; Code:
+(eval-when-compile (require 'cl-lib))
+
;;;---------------------------------------------------------------------
;;; Variables
\\{calculator-mode-map}")
-(eval-when-compile (require 'electric) (require 'ehelp))
+(declare-function Electric-command-loop "electric"
+ (return-tag &optional prompt inhibit-quitting
+ loop-function loop-state))
;;;###autoload
(defun calculator ()
;; can't use 'noprompt, bug in electric.el
(lambda () 'noprompt)
nil
- (lambda (x y) (calculator-update-display))))
+ (lambda (_x _y) (calculator-update-display))))
(and calculator-buffer
(catch 'calculator-done (calculator-quit)))
(use-local-map old-l-map)
(cond
((not (get-buffer-window calculator-buffer))
(let ((window-min-height 2))
- ;; maybe leave two lines for our window because of the normal
- ;; `raised' modeline in Emacs 21
+ ;; maybe leave two lines for our window because of the
+ ;; normal `raised' mode line
(select-window
- (split-window-vertically
- ;; If the modeline might interfere with the calculator buffer,
- ;; use 3 lines instead.
+ (split-window-below
+ ;; If the mode line might interfere with the calculator
+ ;; buffer, use 3 lines instead.
(if (and (fboundp 'face-attr-construct)
(let* ((dh (plist-get (face-attr-construct 'default) :height))
- (mf (face-attr-construct 'modeline))
+ (mf (face-attr-construct 'mode-line))
(mh (plist-get mf :height)))
- ;; If the modeline is shorter than the default,
+ ;; If the mode line is shorter than the default,
;; stick with 2 lines. (It may be necessary to
;; check how much shorter.)
(and
(not (integerp mh))
(< mh 1))))
(or
- ;; If the modeline is taller than the default,
+ ;; If the mode line is taller than the default,
;; use 3 lines.
(and (integerp dh)
(integerp mh)
(and (numberp mh)
(not (integerp mh))
(> mh 1))
- ;; If the modeline has a box with non-negative line-width,
+ ;; If the mode line has a box with non-negative line-width,
;; use 3 lines.
(let* ((bx (plist-get mf :box))
(lh (plist-get bx :line-width)))
(or
(not lh)
(> lh 0))))
- ;; If the modeline has an overline, use 3 lines.
- (plist-get (face-attr-construct 'modeline) :overline)))))
+ ;; If the mode line has an overline, use 3 lines.
+ (plist-get (face-attr-construct 'mode-line) :overline)))))
-3 -2)))
(switch-to-buffer calculator-buffer)))
((not (eq (current-buffer) calculator-buffer))
value)
(car (read-from-string
(cond ((equal "." str) "0.0")
- ((string-match "[eE][+-]?$" str) (concat str "0"))
- ((string-match "\\.[0-9]\\|[eE]" str) str)
- ((string-match "\\." str)
+ ((string-match-p "[eE][+-]?$" str) (concat str "0"))
+ ((string-match-p "\\.[0-9]\\|[eE]" str) str)
+ ((string-match-p "\\." str)
;; do this because Emacs reads "23." as an integer
(concat str "0"))
((stringp str) (concat str ".0"))
(format calculator-displayer num))
((symbolp calculator-displayer)
(funcall calculator-displayer num))
- ((and (consp calculator-displayer)
- (eq 'std (car calculator-displayer)))
+ ((eq 'std (car-safe calculator-displayer))
(calculator-standard-displayer num (cadr calculator-displayer)))
((listp calculator-displayer)
- (eval calculator-displayer))
+ (eval calculator-displayer `((num. ,num))))
(t (prin1-to-string num t))))
;; operators are printed here
(t (prin1-to-string (nth 1 num) t))))
;; smaller than calculator-epsilon (1e-15). I don't think this is
;; necessary now.
(if (symbolp f)
- (cond ((and X Y) (funcall f X Y))
- (X (funcall f X))
- (t (funcall f)))
+ (cond ((and X Y) (funcall f X Y))
+ (X (funcall f X))
+ (t (funcall f)))
;; f is an expression
- (let* ((__f__ f) ; so we can get this value below...
- (TX (calculator-truncate X))
+ (let* ((TX (calculator-truncate X))
(TY (and Y (calculator-truncate Y)))
(DX (if calculator-deg (/ (* X pi) 180) X))
- (L calculator-saved-list)
- (Fbound (fboundp 'F))
- (Fsave (and Fbound (symbol-function 'F)))
- (Dbound (fboundp 'D))
- (Dsave (and Dbound (symbol-function 'D))))
- ;; a shortened version of flet
- (fset 'F (function
- (lambda (&optional x y)
- (calculator-funcall __f__ x y))))
- (fset 'D (function
- (lambda (x)
- (if calculator-deg (/ (* x 180) float-pi) x))))
- (unwind-protect (eval f)
- (if Fbound (fset 'F Fsave) (fmakunbound 'F))
- (if Dbound (fset 'D Dsave) (fmakunbound 'D)))))
+ (L calculator-saved-list))
+ (cl-letf (((symbol-function 'F)
+ (lambda (&optional x y) (calculator-funcall f x y)))
+ ((symbol-function 'D)
+ (lambda (x) (if calculator-deg (/ (* x 180) float-pi) x))))
+ (eval f `((X . ,X)
+ (Y . ,Y)
+ (TX . ,TX)
+ (TY . ,TY)
+ (DX . ,DX)
+ (L . ,L))))))
(error 0)))
;;;---------------------------------------------------------------------
(or calculator-display-fragile
(not (numberp (car calculator-stack))))
(not (and calculator-curnum
- (string-match "[.eE]" calculator-curnum))))
+ (string-match-p "[.eE]" calculator-curnum))))
;; enter the period on the same condition as a digit, only if no
;; period or exponent entered yet
(progn
(if (and (or calculator-display-fragile
(not (numberp (car calculator-stack))))
(not (and calculator-curnum
- (string-match "[eE]" calculator-curnum))))
+ (string-match-p "[eE]" calculator-curnum))))
;; same condition as above, also no E so far
(progn
(calculator-clear-fragile)
(interactive)
(if (and (not calculator-display-fragile)
calculator-curnum
- (string-match "[eE]$" calculator-curnum))
+ (string-match-p "[eE]$" calculator-curnum))
(calculator-digit)
(calculator-op)))
(setq str (concat (or (match-string 1 str) "0")
(or (match-string 2 str) ".0")
(or (match-string 3 str) ""))))
- (condition-case nil (calculator-string-to-number str)
- (error nil)))))
+ (ignore-errors (calculator-string-to-number str)))))
(defun calculator-get-register (reg)
"Get a value from a register REG."
(interactive "cRegister to get value from: ")
(calculator-put-value (cdr (assq reg calculator-registers))))
+(declare-function electric-describe-mode "ehelp" ())
+
(defun calculator-help ()
;; this is used as the quick reference screen you get with `h'
"Quick reference:
(if (or (not calculator-electric-mode)
;; XEmacs has a problem with electric-describe-mode
(featurep 'xemacs))
- (describe-mode)
+ (describe-mode)
(electric-describe-mode))
(if calculator-electric-mode
(use-global-map g-map))
(interactive)
(set-buffer calculator-buffer)
(let ((inhibit-read-only t)) (erase-buffer))
- (if (not calculator-electric-mode)
- (progn
- (condition-case nil
- (while (get-buffer-window calculator-buffer)
- (delete-window (get-buffer-window calculator-buffer)))
- (error nil))
- (kill-buffer calculator-buffer)))
+ (unless calculator-electric-mode
+ (ignore-errors
+ (while (get-buffer-window calculator-buffer)
+ (delete-window (get-buffer-window calculator-buffer))))
+ (kill-buffer calculator-buffer))
(setq calculator-buffer nil)
(message "Calculator done.")
(if calculator-electric-mode (throw 'calculator-done nil)))
(defun calculator-integer-p (x)
"Non-nil if X is equal to an integer."
- (condition-case nil
- (= x (ftruncate x))
- (error nil)))
+ (ignore-errors (= x (ftruncate x))))
(defun calculator-expt (x y)
"Compute X^Y, dealing with errors appropriately."
- (condition-case
- nil
+ (condition-case nil
(expt x y)
(domain-error 0.0e+NaN)
(range-error
HCoop / bpt / emacs.git / blobdiff