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|
;;; calc-store.el --- value storage functions for Calc -*- lexical-binding:t -*-
;; Copyright (C) 1990-1993, 2001-2025 Free Software Foundation, Inc.
;; Author: David Gillespie <daveg@synaptics.com>
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
;; This file is autoloaded from calc-ext.el.
(require 'calc-ext)
(require 'calc-macs)
;;; Memory commands.
(defvar calc-store-keep nil)
(defun calc-store (&optional var)
(interactive)
(let ((calc-store-keep t))
(calc-store-into var)))
(defvar calc-given-value-flag nil)
(defvar calc-given-value)
(defun calc-store-into (&optional var)
(interactive)
(calc-wrapper
(let ((calc-given-value nil)
(calc-given-value-flag 1))
(or var (setq var (calc-read-var-name "Store: " t)))
(if var
(let ((found (assq var '( ( + . calc-store-plus )
( - . calc-store-minus )
( * . calc-store-times )
( / . calc-store-div )
( ^ . calc-store-power )
( | . calc-store-concat ) ))))
(if found
(funcall (cdr found))
(let ((msg
(calc-store-value var (or calc-given-value (calc-top 1))
"" calc-given-value-flag)))
(message "Stored to variable \"%s\"%s"
(calc-var-name var) msg))))
(setq var (calc-is-assignments (calc-top 1)))
(if var
(while var
(let ((msg
(calc-store-value (car (car var)) (cdr (car var))
(if (not (cdr var)) "")
(if (not (cdr var)) 1))))
(message "Stored to variable \"%s\"%s"
(calc-var-name (car (car var))) msg))
(setq var (cdr var))))))))
(defun calc-store-plus (&optional var)
(interactive)
(calc-store-binary var "+" '+))
(defun calc-store-minus (&optional var)
(interactive)
(calc-store-binary var "-" '-))
(defun calc-store-times (&optional var)
(interactive)
(calc-store-binary var "*" '*))
(defun calc-store-div (&optional var)
(interactive)
(calc-store-binary var "/" '/))
(defun calc-store-power (&optional var)
(interactive)
(calc-store-binary var "^" '^))
(defun calc-store-concat (&optional var)
(interactive)
(calc-store-binary var "|" '|))
(defun calc-store-neg (n &optional var)
(interactive "p")
(calc-store-binary var "n" '/ (- n)))
(defun calc-store-inv (n &optional var)
(interactive "p")
(calc-store-binary var "&" '^ (- n)))
(defun calc-store-incr (n &optional var)
(interactive "p")
(calc-store-binary var "n" '- (- n)))
(defun calc-store-decr (n &optional var)
(interactive "p")
(calc-store-binary var "n" '- n))
(defun calc-store-value (var value tag &optional pop)
(let ((msg ""))
(if var
(let ((old (calc-var-value var)))
(set var value)
(if pop (or calc-store-keep (calc-pop-stack pop)))
(calc-record-undo (list 'store (symbol-name var) old))
(if tag
(let ((calc-full-trail-vectors nil))
(calc-record value (format ">%s%s" tag (calc-var-name var)))))
(cond
((and (memq var '(var-e var-i var-pi var-phi var-gamma))
(eq (car-safe old) 'special-const))
(setq msg (format " (Note: Built-in definition of %s has been lost)"
(calc-var-name var))))
((and (memq var '(var-inf var-uinf var-nan))
(null old))
(setq msg (format " (Note: %s has built-in meanings which may interfere)"
(calc-var-name var)))))
(calc-refresh-evaltos var)))
msg))
(defun calc-var-name (var)
(if (symbolp var) (setq var (symbol-name var)))
(if (string-match "\\`var-." var)
(substring var 4)
var))
(defun calc-store-binary (var tag func &optional val)
(calc-wrapper
(let ((calc-simplify-mode (if (eq calc-simplify-mode 'none)
'num calc-simplify-mode))
(value (or val (calc-top 1))))
(or var (setq var (calc-read-var-name (format "Store %s: " tag))))
(if var
(let ((old (calc-var-value var)))
(if (eq (car-safe old) 'special-const)
(error "\"%s\" is a special constant" (calc-var-name var)))
(if (not old)
(if (memq var '(var-inf var-uinf var-nan))
(error "\"%s\" is a special variable" (calc-var-name var))
(error "No such variable: \"%s\"" (calc-var-name var))))
(if (stringp old)
(setq old (math-read-expr old)))
(if (eq (car-safe old) 'error)
(error "Bad format in variable contents: %s" (nth 2 old)))
(calc-store-value var
(calc-normalize (if (calc-is-inverse)
(list func value old)
(list func old value)))
tag (and (not val) 1))
(message "Variable \"%s\" changed" (calc-var-name var)))))))
(defvar calc-var-name-map
(let ((map (copy-keymap minibuffer-local-completion-map)))
(define-key map " " #'self-insert-command)
(mapc (lambda (x)
(define-key map (char-to-string x)
#'calcVar-digit))
"0123456789")
(mapc (lambda (x)
(define-key map (char-to-string x)
#'calcVar-oper))
"+-*/^|")
map)
"Keymap for reading Calc variable names.")
(defvar calc-store-opers)
(defvar calc-read-var-name-history nil
"History for reading variable names.")
(defun calc-read-var-name (prompt &optional store-opers)
(setq calc-given-value nil
calc-aborted-prefix nil)
(let* ((calc-store-opers store-opers)
(var (concat
"var-"
(minibuffer-with-setup-hook
(lambda ()
(setq-local minibuffer-completion-table
(mapcar (lambda (x) (substring x 4))
(all-completions "var-" obarray)))
(setq-local minibuffer-completion-predicate
(lambda (x)
(boundp (intern (concat "var-" x)))))
(setq-local minibuffer-completion-confirm t))
(read-from-minibuffer
prompt nil calc-var-name-map nil
'calc-read-var-name-history)))))
(setq calc-aborted-prefix "")
(and (not (equal var "var-"))
(if (string-match "\\`\\([-a-zA-Zα-ωΑ-Ω0-9]+\\) *:?=" var)
(if (null calc-given-value-flag)
(error "Assignment is not allowed in this command")
(let ((svar (intern (substring var 0 (match-end 1)))))
(setq calc-given-value-flag 0
calc-given-value (math-read-expr
(substring var (match-end 0))))
(if (eq (car-safe calc-given-value) 'error)
(error "Bad format: %s" (nth 2 calc-given-value)))
(setq calc-given-value (math-evaluate-expr calc-given-value))
svar))
(intern var)))))
(defun calcVar-digit ()
(interactive)
(if (calc-minibuffer-contains "\\'")
(if (eq calc-store-opers 0)
(beep)
(insert "q")
(self-insert-and-exit))
(self-insert-command 1)))
(defun calcVar-oper ()
(interactive)
(if (and (eq calc-store-opers t)
(calc-minibuffer-contains "\\'"))
(progn
(erase-buffer)
(self-insert-and-exit))
(self-insert-command 1)))
(defun calc-store-map (&optional oper var)
(interactive)
(calc-wrapper
(let* ((calc-dollar-values (mapcar #'calc-get-stack-element
(nthcdr calc-stack-top calc-stack)))
(calc-dollar-used 0)
(oper (or oper (calc-get-operator "Store Mapping")))
(nargs (car oper)))
(or var (setq var (calc-read-var-name (format "Store Mapping %s: "
(nth 2 oper)))))
(if var
(let ((old (calc-var-value var)))
(if (eq (car-safe old) 'special-const)
(error "\"%s\" is a special constant" (calc-var-name var)))
(if (not old)
(if (memq var '(var-inf var-uinf var-nan))
(error "\"%s\" is a special variable" (calc-var-name var))
(error "No such variable: \"%s\"" (calc-var-name var))))
(let ((calc-simplify-mode (if (eq calc-simplify-mode 'none)
'num calc-simplify-mode))
(values (and (> nargs 1)
(calc-top-list (1- nargs) (1+ calc-dollar-used)))))
(message "Working...")
(calc-set-command-flag 'clear-message)
(if (stringp old)
(setq old (math-read-expr old)))
(if (eq (car-safe old) 'error)
(error "Bad format in variable contents: %s" (nth 2 old)))
(setq values (if (calc-is-inverse)
(append values (list old))
(append (list old) values)))
(calc-store-value var
(calc-normalize (cons (nth 1 oper) values))
(nth 2 oper)
(+ calc-dollar-used (1- nargs)))
(message "Variable \"%s\" changed" (calc-var-name var))))))))
(defun calc-store-exchange (&optional var)
(interactive)
(calc-wrapper
(let ((calc-given-value nil)
(calc-given-value-flag 1)
top)
(or var (setq var (calc-read-var-name "Exchange with: ")))
(if var
(let ((value (calc-var-value var)))
(if (eq (car-safe value) 'special-const)
(error "\"%s\" is a special constant" (calc-var-name var)))
(if (not value)
(if (memq var '(var-inf var-uinf var-nan))
(error "\"%s\" is a special variable" (calc-var-name var))
(error "No such variable: \"%s\"" (calc-var-name var))))
(setq top (or calc-given-value (calc-top 1)))
(calc-store-value var top nil)
(calc-pop-push-record calc-given-value-flag
(concat "<>" (calc-var-name var)) value))))))
(defun calc-unstore (&optional var)
(interactive)
(calc-wrapper
(or var (setq var (calc-read-var-name "Unstore: ")))
(if var
(progn
(and (memq var '(var-e var-i var-pi var-phi var-gamma))
(eq (car-safe (calc-var-value var)) 'special-const)
(message "(Note: Built-in definition of %s has been lost)" var))
(if (and (boundp var) (symbol-value var))
(message "Unstored variable \"%s\"" (calc-var-name var))
(message "Variable \"%s\" remains unstored" (calc-var-name var)))
(makunbound var)
(calc-refresh-evaltos var)))))
(defun calc-let (&optional var)
(interactive)
(calc-wrapper
(let* ((calc-given-value nil)
(calc-given-value-flag 1)
thing value)
(or var (setq var (calc-read-var-name "Let variable: ")))
(if calc-given-value
(setq value calc-given-value
thing (calc-top 1))
(setq value (calc-top 1)
thing (calc-top 2)))
(setq var (if var
(list (cons var value))
(calc-is-assignments value)))
(if var
(calc-pop-push-record
(1+ calc-given-value-flag)
(concat "=" (calc-var-name (car (car var))))
(let ((saved-val (mapcar (lambda (v)
(and (boundp (car v))
(symbol-value (car v))))
var)))
(unwind-protect
(let ((vv var))
(while vv
(set (car (car vv)) (calc-normalize (cdr (car vv))))
(calc-refresh-evaltos (car (car vv)))
(setq vv (cdr vv)))
(math-evaluate-expr thing))
(while saved-val
(if (car saved-val)
(set (car (car var)) (car saved-val))
(makunbound (car (car var))))
(setq saved-val (cdr saved-val)
var (cdr var)))
(calc-handle-whys))))))))
(defun calc-is-assignments (value)
(if (memq (car-safe value) '(calcFunc-eq calcFunc-assign))
(and (eq (car-safe (nth 1 value)) 'var)
(list (cons (nth 2 (nth 1 value)) (nth 2 value))))
(if (eq (car-safe value) 'vec)
(let ((vv nil))
(while (and (setq value (cdr value))
(memq (car-safe (car value))
'(calcFunc-eq calcFunc-assign))
(eq (car-safe (nth 1 (car value))) 'var))
(setq vv (cons (cons (nth 2 (nth 1 (car value)))
(nth 2 (car value)))
vv)))
(and (not value)
vv)))))
(defun calc-recall (&optional var)
(interactive)
(calc-wrapper
(or var (setq var (calc-read-var-name "Recall: ")))
(if var
(let ((value (calc-var-value var)))
(or value
(error "No such variable: \"%s\"" (calc-var-name var)))
(if (stringp value)
(setq value (math-read-expr value)))
(if (eq (car-safe value) 'error)
(error "Bad format in variable contents: %s" (nth 2 value)))
(setq value (calc-normalize value))
(let ((calc-full-trail-vectors nil))
(calc-record value (concat "<" (calc-var-name var))))
(calc-push value)))))
(defun calc-store-quick ()
(interactive)
(calc-store (intern (format "var-q%c" last-command-event))))
(defun calc-store-into-quick ()
(interactive)
(calc-store-into (intern (format "var-q%c" last-command-event))))
(defun calc-recall-quick ()
(interactive)
(calc-recall (intern (format "var-q%c" last-command-event))))
(defun calc-copy-special-constant (&optional sconst var)
(interactive)
(let ((sc '(("")
("e" . (special-const (math-e)))
("pi" . (special-const (math-pi)))
("i" . (special-const (math-imaginary 1)))
("phi" . (special-const (math-phi)))
("gamma" . (special-const (math-gamma-const))))))
(calc-wrapper
(or sconst (setq sconst (completing-read "Special constant: " sc nil t)))
(unless (string= sconst "")
(let ((value (cdr (assoc sconst sc))))
(or var (setq var (calc-read-var-name
(format "Copy special constant %s, to: "
sconst))))
(if var
(let ((msg (calc-store-value var value "")))
(message "Special constant \"%s\" copied to \"%s\"%s"
sconst (calc-var-name var) msg))))))))
(defun calc-copy-variable (&optional var1 var2)
(interactive)
(calc-wrapper
(or var1 (setq var1 (calc-read-var-name "Copy variable: ")))
(if var1
(let ((value (calc-var-value var1)))
(or value
(error "No such variable: \"%s\"" (calc-var-name var1)))
(or var2 (setq var2 (calc-read-var-name
(format "Copy variable: %s, to: "
(calc-var-name var1)))))
(if var2
(let ((msg (calc-store-value var2 value "")))
(message "Variable \"%s\" copied to \"%s\"%s"
(calc-var-name var1) (calc-var-name var2) msg)))))))
(defvar calc-last-edited-variable nil)
(defun calc-edit-variable (&optional var)
(interactive)
(calc-wrapper
(unless var
(setq var (calc-read-var-name
(format-prompt "Edit" (and calc-last-edited-variable
(calc-var-name
calc-last-edited-variable))))))
(or var (setq var calc-last-edited-variable))
(if var
(let* ((value (calc-var-value var)))
(if (eq (car-safe value) 'special-const)
(error "%s is a special constant" var))
(setq calc-last-edited-variable var)
(calc--edit-mode (lambda () (calc-finish-stack-edit var))
t
(format-message
"Editing variable `%s'" (calc-var-name var)))
(and value
(insert (math-format-nice-expr value (frame-width)) "\n")))))
(calc-show-edit-buffer))
(defun calc-edit-Decls ()
(interactive)
(calc-edit-variable 'var-Decls))
(defun calc-edit-EvalRules ()
(interactive)
(calc-edit-variable 'var-EvalRules))
(defun calc-edit-FitRules ()
(interactive)
(calc-edit-variable 'var-FitRules))
(defun calc-edit-GenCount ()
(interactive)
(calc-edit-variable 'var-GenCount))
(defun calc-edit-Holidays ()
(interactive)
(calc-edit-variable 'var-Holidays))
(defun calc-edit-IntegLimit ()
(interactive)
(calc-edit-variable 'var-IntegLimit))
(defun calc-edit-LineStyles ()
(interactive)
(calc-edit-variable 'var-LineStyles))
(defun calc-edit-PointStyles ()
(interactive)
(calc-edit-variable 'var-PointStyles))
(defun calc-edit-PlotRejects ()
(interactive)
(calc-edit-variable 'var-PlotRejects))
(defun calc-edit-AlgSimpRules ()
(interactive)
(calc-edit-variable 'var-AlgSimpRules))
(defun calc-edit-TimeZone ()
(interactive)
(calc-edit-variable 'var-TimeZone))
(defun calc-edit-Units ()
(interactive)
(calc-edit-variable 'var-Units))
(defun calc-edit-ExtSimpRules ()
(interactive)
(calc-edit-variable 'var-ExtSimpRules))
(defun calc-declare-variable (&optional var)
(interactive)
(calc-wrapper
(or var (setq var (calc-read-var-name "Declare: " 0)))
(or var (setq var 'var-All))
(let* (dp decl row rp) ;; def
(or (and (calc-var-value 'var-Decls)
(eq (car-safe var-Decls) 'vec))
(setq var-Decls (list 'vec)))
(setq dp var-Decls)
(while (and (setq dp (cdr dp))
(or (not (eq (car-safe (car dp)) 'vec))
(/= (length (car dp)) 3)
(progn
(setq row (nth 1 (car dp))
rp row)
(if (eq (car-safe row) 'vec)
(progn
(while
(and (setq rp (cdr rp))
(or (not (eq (car-safe (car rp)) 'var))
(not (eq (nth 2 (car rp)) var)))))
(setq rp (car rp)))
(if (or (not (eq (car-safe row) 'var))
(not (eq (nth 2 row) var)))
(setq rp nil)))
(not rp)))))
(calc-unread-command ?\C-a)
(setq decl (read-string (format "Declare: %s to be: " (calc-var-name var))
(and rp
(math-format-flat-expr (nth 2 (car dp)) 0))))
(setq decl (and (string-match "[^ \t]" decl)
(math-read-exprs decl)))
(if (eq (car-safe decl) 'error)
(error "Bad format in declaration: %s" (nth 2 decl)))
(if (cdr decl)
(setq decl (cons 'vec decl))
(setq decl (car decl)))
(and (eq (car-safe decl) 'vec)
(= (length decl) 2)
(setq decl (nth 1 decl)))
(calc-record (append '(vec) (list (math-build-var-name var))
(and decl (list decl)))
"decl")
(setq var-Decls (copy-sequence var-Decls))
(if (eq (car-safe row) 'vec)
(progn
(setcdr row (delq rp (cdr row)))
(or (cdr row)
(setq var-Decls (delq (car dp) var-Decls))))
(setq var-Decls (delq (car dp) var-Decls)))
(if decl
(progn
(setq dp (and (not (eq var 'var-All)) var-Decls))
(while (and (setq dp (cdr dp))
(or (not (eq (car-safe (car dp)) 'vec))
(/= (length (car dp)) 3)
(not (equal (nth 2 (car dp)) decl)))))
(if dp
(setcar (cdr (car dp))
(append (if (eq (car-safe (nth 1 (car dp))) 'vec)
(nth 1 (car dp))
(list 'vec (nth 1 (car dp))))
(list (math-build-var-name var))))
(setq var-Decls (append var-Decls
(list (list 'vec
(math-build-var-name var)
decl)))))))
(calc-refresh-evaltos 'var-Decls))))
(defvar calc-dont-insert-variables '(var-FitRules var-FactorRules
var-CommuteRules var-JumpRules
var-DistribRules var-MergeRules
var-NegateRules var-InvertRules
var-IntegAfterRules
var-TimeZone var-PlotRejects
var-PlotData1 var-PlotData2
var-PlotData3 var-PlotData4
var-PlotData5 var-PlotData6
var-DUMMY))
;; The variable calc-pv-pos is local to calc-permanent-variable, but
;; used by calc-insert-permanent-variable, which is called by
;; calc-permanent-variable.
(defvar calc-pv-pos)
(defun calc-permanent-variable (&optional var)
(interactive)
(calc-wrapper
(or var (setq var (calc-read-var-name (format-prompt "Save variable" "all"))))
(let (calc-pv-pos)
(and var (or (and (boundp var) (symbol-value var))
(error "No such variable")))
(set-buffer (find-file-noselect (substitute-in-file-name
calc-settings-file)))
(if var
(calc-insert-permanent-variable var)
(mapatoms (lambda (x)
(and (string-match "\\`var-" (symbol-name x))
(not (memq x calc-dont-insert-variables))
(calc-var-value x)
(not (eq (car-safe (symbol-value x)) 'special-const))
(calc-insert-permanent-variable x)))))
(save-buffer))))
(defun calc-insert-permanent-variable (var)
(goto-char (point-min))
(if (let (case-fold-search)
(search-forward (concat "(setq " (symbol-name var) " '") nil t))
(progn
(setq calc-pv-pos (point-marker))
(forward-line -1)
(if (looking-at ";;; Variable .* stored by Calc on ")
(progn
(delete-region (match-end 0) (progn (end-of-line) (point)))
(insert (current-time-string))))
(goto-char (- calc-pv-pos 8 (length (symbol-name var))))
(forward-sexp 1)
(backward-char 1)
(delete-region calc-pv-pos (point)))
(goto-char (point-max))
(insert "\n;;; Variable \""
(symbol-name var)
"\" stored by Calc on "
(current-time-string)
"\n(setq "
(symbol-name var)
" ')\n")
(backward-char 2))
(insert (prin1-to-string (calc-var-value var)))
(forward-line 1))
(defun calc-insert-variables (buf)
(interactive "bBuffer in which to save variable values: ")
(with-current-buffer buf
(mapatoms (lambda (x)
(and (string-match "\\`var-" (symbol-name x))
(not (memq x calc-dont-insert-variables))
(calc-var-value x)
(not (eq (car-safe (symbol-value x)) 'special-const))
(or (not (eq x 'var-Decls))
(not (equal var-Decls '(vec))))
(or (not (eq x 'var-Holidays))
(not (equal var-Holidays '(vec (var sat var-sat)
(var sun var-sun)))))
(insert "(setq "
(symbol-name x)
" "
(prin1-to-string
(let ((calc-language
(if (memq calc-language '(nil big))
'flat
calc-language)))
(math-format-value (symbol-value x) 100000)))
")\n"))))))
(defun calc-assign (arg)
(interactive "P")
(calc-slow-wrapper
(calc-binary-op ":=" 'calcFunc-assign arg)))
(defun calc-evalto (arg)
(interactive "P")
(calc-slow-wrapper
(calc-unary-op "=>" 'calcFunc-evalto arg)))
(defun calc-subscript (arg)
(interactive "P")
(calc-slow-wrapper
(calc-binary-op "sub" 'calcFunc-subscr arg)))
(provide 'calc-store)
;;; calc-store.el ends here
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