lisp/calc/calc-store.el

   1 ;;; calc-store.el --- value storage functions for Calc
   2
   3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007 Free Software Foundation, Inc.
   5
   6 ;; Author: David Gillespie <daveg@synaptics.com>
   7 ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com>
   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 2, or (at your option)
  14 ;; 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; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 ;; This file is autoloaded from calc-ext.el.
  31
  32 (require 'calc-ext)
  33 (require 'calc-macs)
  34
  35 ;;; Memory commands.
  36
  37 (defvar calc-store-keep nil)
  38 (defun calc-store (&optional var)
  39   (interactive)
  40   (let ((calc-store-keep t))
  41     (calc-store-into var)))
  42
  43 (defvar calc-given-value-flag nil)
  44 (defvar calc-given-value)
  45
  46 (defun calc-store-into (&optional var)
  47   (interactive)
  48   (calc-wrapper
  49    (let ((calc-given-value nil)
  50          (calc-given-value-flag 1))
  51      (or var (setq var (calc-read-var-name "Store: " t)))
  52      (if var
  53          (let ((found (assq var '( ( + . calc-store-plus )
  54                                    ( - . calc-store-minus )
  55                                    ( * . calc-store-times )
  56                                    ( / . calc-store-div )
  57                                    ( ^ . calc-store-power )
  58                                    ( | . calc-store-concat ) ))))
  59            (if found
  60                (funcall (cdr found))
  61              (let ((msg
  62                     (calc-store-value var (or calc-given-value (calc-top 1))
  63                                       "" calc-given-value-flag)))
  64                (message (concat "Stored to variable \"%s\"" msg)
  65                         (calc-var-name var)))))
  66        (setq var (calc-is-assignments (calc-top 1)))
  67        (if var
  68            (while var
  69              (let ((msg
  70                     (calc-store-value (car (car var)) (cdr (car var))
  71                                       (if (not (cdr var)) "")
  72                                       (if (not (cdr var)) 1))))
  73                (message (concat "Stored to variable \"%s\"" msg)
  74                         (calc-var-name (car (car var)))))
  75              (setq var (cdr var))))))))
  76
  77 (defun calc-store-plus (&optional var)
  78   (interactive)
  79   (calc-store-binary var "+" '+))
  80
  81 (defun calc-store-minus (&optional var)
  82   (interactive)
  83   (calc-store-binary var "-" '-))
  84
  85 (defun calc-store-times (&optional var)
  86   (interactive)
  87   (calc-store-binary var "*" '*))
  88
  89 (defun calc-store-div (&optional var)
  90   (interactive)
  91   (calc-store-binary var "/" '/))
  92
  93 (defun calc-store-power (&optional var)
  94   (interactive)
  95   (calc-store-binary var "^" '^))
  96
  97 (defun calc-store-concat (&optional var)
  98   (interactive)
  99   (calc-store-binary var "|" '|))
 100
 101 (defun calc-store-neg (n &optional var)
 102   (interactive "p")
 103   (calc-store-binary var "n" '/ (- n)))
 104
 105 (defun calc-store-inv (n &optional var)
 106   (interactive "p")
 107   (calc-store-binary var "&" '^ (- n)))
 108
 109 (defun calc-store-incr (n &optional var)
 110   (interactive "p")
 111   (calc-store-binary var "n" '- (- n)))
 112
 113 (defun calc-store-decr (n &optional var)
 114   (interactive "p")
 115   (calc-store-binary var "n" '- n))
 116
 117 (defun calc-store-value (var value tag &optional pop)
 118   (let ((msg ""))
 119     (if var
 120         (let ((old (calc-var-value var)))
 121           (set var value)
 122           (if pop (or calc-store-keep (calc-pop-stack pop)))
 123           (calc-record-undo (list 'store (symbol-name var) old))
 124           (if tag
 125               (let ((calc-full-trail-vectors nil))
 126                 (calc-record value (format ">%s%s" tag (calc-var-name var)))))
 127           (cond
 128            ((and (memq var '(var-e var-i var-pi var-phi var-gamma))
 129                  (eq (car-safe old) 'special-const))
 130             (setq msg (format " (Note: Built-in definition of %s has been lost)"
 131                               (calc-var-name var))))
 132            ((and (memq var '(var-inf var-uinf var-nan))
 133                  (null old))
 134             (setq msg (format " (Note: %s has built-in meanings which may interfere)"
 135                               (calc-var-name var)))))
 136           (calc-refresh-evaltos var)))
 137     msg))
 138
 139 (defun calc-var-name (var)
 140   (if (symbolp var) (setq var (symbol-name var)))
 141   (if (string-match "\\`var-." var)
 142       (substring var 4)
 143     var))
 144
 145 (defun calc-store-binary (var tag func &optional val)
 146   (calc-wrapper
 147    (let ((calc-simplify-mode (if (eq calc-simplify-mode 'none)
 148                                  'num calc-simplify-mode))
 149          (value (or val (calc-top 1))))
 150      (or var (setq var (calc-read-var-name (format "Store %s: " tag))))
 151      (if var
 152          (let ((old (calc-var-value var)))
 153            (if (eq (car-safe old) 'special-const)
 154                (error "\"%s\" is a special constant" (calc-var-name var)))
 155            (if (not old)
 156                (if (memq var '(var-inf var-uinf var-nan))
 157                    (error "\"%s\" is a special variable" (calc-var-name var))
 158                  (error "No such variable: \"%s\"" (calc-var-name var))))
 159            (if (stringp old)
 160                (setq old (math-read-expr old)))
 161            (if (eq (car-safe old) 'error)
 162                (error "Bad format in variable contents: %s" (nth 2 old)))
 163            (calc-store-value var
 164                              (calc-normalize (if (calc-is-inverse)
 165                                                  (list func value old)
 166                                                (list func old value)))
 167                              tag (and (not val) 1))
 168            (message "Variable \"%s\" changed" (calc-var-name var)))))))
 169
 170 (defvar calc-var-name-map nil "Keymap for reading Calc variable names.")
 171 (if calc-var-name-map
 172     ()
 173   (setq calc-var-name-map (copy-keymap minibuffer-local-completion-map))
 174   (define-key calc-var-name-map " " 'self-insert-command)
 175   (mapcar (function
 176            (lambda (x)
 177              (define-key calc-var-name-map (char-to-string x)
 178                'calcVar-digit)))
 179           "0123456789")
 180   (mapcar (function
 181            (lambda (x)
 182              (define-key calc-var-name-map (char-to-string x)
 183                'calcVar-oper)))
 184           "+-*/^|"))
 185
 186 (defvar calc-store-opers)
 187
 188 (defun calc-read-var-name (prompt &optional calc-store-opers)
 189   (setq calc-given-value nil
 190         calc-aborted-prefix nil)
 191   (let ((var (concat
 192               "var-"
 193               (let ((minibuffer-completion-table
 194                      (mapcar (lambda (x) (substring x 4))
 195                              (all-completions "var-" obarray)))
 196                     (minibuffer-completion-predicate
 197                      (lambda (x) (boundp (intern (concat "var-" x)))))
 198                     (minibuffer-completion-confirm t))
 199                 (read-from-minibuffer prompt nil calc-var-name-map nil)))))
 200     (setq calc-aborted-prefix "")
 201     (and (not (equal var "var-"))
 202          (if (string-match "\\`\\([-a-zA-Z0-9]+\\) *:?=" var)
 203              (if (null calc-given-value-flag)
 204                  (error "Assignment is not allowed in this command")
 205                (let ((svar (intern (substring var 0 (match-end 1)))))
 206                  (setq calc-given-value-flag 0
 207                        calc-given-value (math-read-expr
 208                                          (substring var (match-end 0))))
 209                  (if (eq (car-safe calc-given-value) 'error)
 210                      (error "Bad format: %s" (nth 2 calc-given-value)))
 211                  (setq calc-given-value (math-evaluate-expr calc-given-value))
 212                  svar))
 213            (intern var)))))
 214
 215 (defun calcVar-digit ()
 216   (interactive)
 217   (if (calc-minibuffer-contains "\\'")
 218       (if (eq calc-store-opers 0)
 219           (beep)
 220         (insert "q")
 221         (self-insert-and-exit))
 222     (self-insert-command 1)))
 223
 224 (defun calcVar-oper ()
 225   (interactive)
 226   (if (and (eq calc-store-opers t)
 227            (calc-minibuffer-contains "\\'"))
 228       (progn
 229         (erase-buffer)
 230         (self-insert-and-exit))
 231     (self-insert-command 1)))
 232
 233 (defun calc-store-map (&optional oper var)
 234   (interactive)
 235   (calc-wrapper
 236    (let* ((sel-mode nil)
 237           (calc-dollar-values (mapcar 'calc-get-stack-element
 238                                       (nthcdr calc-stack-top calc-stack)))
 239           (calc-dollar-used 0)
 240           (oper (or oper (calc-get-operator "Store Mapping")))
 241           (nargs (car oper)))
 242      (or var (setq var (calc-read-var-name (format "Store Mapping %s: "
 243                                                    (nth 2 oper)))))
 244      (if var
 245          (let ((old (calc-var-value var)))
 246            (if (eq (car-safe old) 'special-const)
 247                (error "\"%s\" is a special constant" (calc-var-name var)))
 248            (if (not old)
 249                (if (memq var '(var-inf var-uinf var-nan))
 250                    (error "\"%s\" is a special variable" (calc-var-name var))
 251                  (error "No such variable: \"%s\"" (calc-var-name var))))
 252            (let ((calc-simplify-mode (if (eq calc-simplify-mode 'none)
 253                                          'num calc-simplify-mode))
 254                  (values (and (> nargs 1)
 255                               (calc-top-list (1- nargs) (1+ calc-dollar-used)))))
 256              (message "Working...")
 257              (calc-set-command-flag 'clear-message)
 258              (if (stringp old)
 259                  (setq old (math-read-expr old)))
 260              (if (eq (car-safe old) 'error)
 261                  (error "Bad format in variable contents: %s" (nth 2 old)))
 262              (setq values (if (calc-is-inverse)
 263                               (append values (list old))
 264                             (append (list old) values)))
 265              (calc-store-value var
 266                                (calc-normalize (cons (nth 1 oper) values))
 267                                (nth 2 oper)
 268                                (+ calc-dollar-used (1- nargs)))
 269              (message "Variable \"%s\" changed" (calc-var-name var))))))))
 270
 271
 272 (defun calc-store-exchange (&optional var)
 273   (interactive)
 274   (calc-wrapper
 275    (let ((calc-given-value nil)
 276          (calc-given-value-flag 1)
 277          top)
 278      (or var (setq var (calc-read-var-name "Exchange with: ")))
 279      (if var
 280          (let ((value (calc-var-value var)))
 281            (if (eq (car-safe value) 'special-const)
 282                (error "\"%s\" is a special constant" (calc-var-name var)))
 283            (if (not value)
 284                (if (memq var '(var-inf var-uinf var-nan))
 285                    (error "\"%s\" is a special variable" (calc-var-name var))
 286                  (error "No such variable: \"%s\"" (calc-var-name var))))
 287            (setq top (or calc-given-value (calc-top 1)))
 288            (calc-store-value var top nil)
 289            (calc-pop-push-record calc-given-value-flag
 290                                  (concat "<>" (calc-var-name var)) value))))))
 291
 292 (defun calc-unstore (&optional var)
 293   (interactive)
 294   (calc-wrapper
 295    (or var (setq var (calc-read-var-name "Unstore: ")))
 296    (if var
 297        (progn
 298          (and (memq var '(var-e var-i var-pi var-phi var-gamma))
 299               (eq (car-safe (calc-var-value var)) 'special-const)
 300               (message "(Note: Built-in definition of %s has been lost)" var))
 301          (if (and (boundp var) (symbol-value var))
 302              (message "Unstored variable \"%s\"" (calc-var-name var))
 303            (message "Variable \"%s\" remains unstored" (calc-var-name var)))
 304          (makunbound var)
 305          (calc-refresh-evaltos var)))))
 306
 307 (defun calc-let (&optional var)
 308   (interactive)
 309   (calc-wrapper
 310    (let* ((calc-given-value nil)
 311           (calc-given-value-flag 1)
 312           thing value)
 313      (or var (setq var (calc-read-var-name "Let variable: ")))
 314      (if calc-given-value
 315          (setq value calc-given-value
 316                thing (calc-top 1))
 317        (setq value (calc-top 1)
 318              thing (calc-top 2)))
 319      (setq var (if var
 320                    (list (cons var value))
 321                  (calc-is-assignments value)))
 322      (if var
 323          (calc-pop-push-record
 324           (1+ calc-given-value-flag)
 325           (concat "=" (calc-var-name (car (car var))))
 326           (let ((saved-val (mapcar (function
 327                                     (lambda (v)
 328                                       (and (boundp (car v))
 329                                            (symbol-value (car v)))))
 330                                    var)))
 331             (unwind-protect
 332                 (let ((vv var))
 333                   (while vv
 334                     (set (car (car vv)) (calc-normalize (cdr (car vv))))
 335                     (calc-refresh-evaltos (car (car vv)))
 336                     (setq vv (cdr vv)))
 337                   (math-evaluate-expr thing))
 338               (while saved-val
 339                 (if (car saved-val)
 340                     (set (car (car var)) (car saved-val))
 341                   (makunbound (car (car var))))
 342                 (setq saved-val (cdr saved-val)
 343                       var (cdr var)))
 344               (calc-handle-whys))))))))
 345
 346 (defun calc-is-assignments (value)
 347   (if (memq (car-safe value) '(calcFunc-eq calcFunc-assign))
 348       (and (eq (car-safe (nth 1 value)) 'var)
 349            (list (cons (nth 2 (nth 1 value)) (nth 2 value))))
 350     (if (eq (car-safe value) 'vec)
 351         (let ((vv nil))
 352           (while (and (setq value (cdr value))
 353                       (memq (car-safe (car value))
 354                             '(calcFunc-eq calcFunc-assign))
 355                       (eq (car-safe (nth 1 (car value))) 'var))
 356             (setq vv (cons (cons (nth 2 (nth 1 (car value)))
 357                                  (nth 2 (car value)))
 358                            vv)))
 359           (and (not value)
 360                vv)))))
 361
 362 (defun calc-recall (&optional var)
 363   (interactive)
 364   (calc-wrapper
 365    (or var (setq var (calc-read-var-name "Recall: ")))
 366    (if var
 367        (let ((value (calc-var-value var)))
 368          (or value
 369              (error "No such variable: \"%s\"" (calc-var-name var)))
 370          (if (stringp value)
 371              (setq value (math-read-expr value)))
 372          (if (eq (car-safe value) 'error)
 373              (error "Bad format in variable contents: %s" (nth 2 value)))
 374          (setq value (calc-normalize value))
 375          (let ((calc-full-trail-vectors nil))
 376            (calc-record value (concat "<" (calc-var-name var))))
 377          (calc-push value)))))
 378
 379 (defun calc-store-quick ()
 380   (interactive)
 381   (calc-store (intern (format "var-q%c" last-command-char))))
 382
 383 (defun calc-store-into-quick ()
 384   (interactive)
 385   (calc-store-into (intern (format "var-q%c" last-command-char))))
 386
 387 (defun calc-recall-quick ()
 388   (interactive)
 389   (calc-recall (intern (format "var-q%c" last-command-char))))
 390
 391 (defun calc-copy-special-constant (&optional sconst var)
 392   (interactive)
 393   (let ((sc '(("")
 394               ("e" . (special-const (math-e)))
 395               ("pi" . (special-const (math-pi)))
 396               ("i" . (special-const (math-imaginary 1)))
 397               ("phi" . (special-const (math-phi)))
 398               ("gamma" . (special-const (math-gamma-const))))))
 399   (calc-wrapper
 400    (or sconst (setq sconst (completing-read "Special constant: " sc nil t)))
 401    (unless (string= sconst "")
 402      (let ((value (cdr (assoc sconst sc))))
 403        (or var (setq var (calc-read-var-name
 404                             (format "Copy special constant %s, to: "
 405                                     sconst))))
 406        (if var
 407            (let ((msg (calc-store-value var value "")))
 408              (message (concat "Special constant \"%s\" copied to \"%s\"" msg)
 409                       sconst (calc-var-name var)))))))))
 410
 411 (defun calc-copy-variable (&optional var1 var2)
 412   (interactive)
 413   (calc-wrapper
 414    (or var1 (setq var1 (calc-read-var-name "Copy variable: ")))
 415    (if var1
 416        (let ((value (calc-var-value var1)))
 417          (or value
 418              (error "No such variable: \"%s\"" (calc-var-name var1)))
 419          (or var2 (setq var2 (calc-read-var-name
 420                               (format "Copy variable: %s, to: "
 421                                       (calc-var-name var1)))))
 422          (if var2
 423              (let ((msg (calc-store-value var2 value "")))
 424                (message (concat "Variable \"%s\" copied to \"%s\"" msg)
 425                         (calc-var-name var1) (calc-var-name var2))))))))
 426
 427 (defvar calc-last-edited-variable nil)
 428 (defun calc-edit-variable (&optional var)
 429   (interactive)
 430   (calc-wrapper
 431    (or var (setq var (calc-read-var-name
 432                       (if calc-last-edited-variable
 433                           (format "Edit (default %s): "
 434                                   (calc-var-name calc-last-edited-variable))
 435                         "Edit: "))))
 436    (or var (setq var calc-last-edited-variable))
 437    (if var
 438        (let* ((value (calc-var-value var)))
 439          (if (eq (car-safe value) 'special-const)
 440              (error "%s is a special constant" var))
 441          (setq calc-last-edited-variable var)
 442          (calc-edit-mode (list 'calc-finish-stack-edit (list 'quote var))
 443                          t
 444                          (concat "Editing variable `" (calc-var-name var) "'. "))
 445          (and value
 446               (insert (math-format-nice-expr value (frame-width)) "\n")))))
 447   (calc-show-edit-buffer))
 448
 449 (defun calc-edit-Decls ()
 450   (interactive)
 451   (calc-edit-variable 'var-Decls))
 452
 453 (defun calc-edit-EvalRules ()
 454   (interactive)
 455   (calc-edit-variable 'var-EvalRules))
 456
 457 (defun calc-edit-FitRules ()
 458   (interactive)
 459   (calc-edit-variable 'var-FitRules))
 460
 461 (defun calc-edit-GenCount ()
 462   (interactive)
 463   (calc-edit-variable 'var-GenCount))
 464
 465 (defun calc-edit-Holidays ()
 466   (interactive)
 467   (calc-edit-variable 'var-Holidays))
 468
 469 (defun calc-edit-IntegLimit ()
 470   (interactive)
 471   (calc-edit-variable 'var-IntegLimit))
 472
 473 (defun calc-edit-LineStyles ()
 474   (interactive)
 475   (calc-edit-variable 'var-LineStyles))
 476
 477 (defun calc-edit-PointStyles ()
 478   (interactive)
 479   (calc-edit-variable 'var-PointStyles))
 480
 481 (defun calc-edit-PlotRejects ()
 482   (interactive)
 483   (calc-edit-variable 'var-PlotRejects))
 484
 485 (defun calc-edit-AlgSimpRules ()
 486   (interactive)
 487   (calc-edit-variable 'var-AlgSimpRules))
 488
 489 (defun calc-edit-TimeZone ()
 490   (interactive)
 491   (calc-edit-variable 'var-TimeZone))
 492
 493 (defun calc-edit-Units ()
 494   (interactive)
 495   (calc-edit-variable 'var-Units))
 496
 497 (defun calc-edit-ExtSimpRules ()
 498   (interactive)
 499   (calc-edit-variable 'var-ExtSimpRules))
 500
 501 (defun calc-declare-variable (&optional var)
 502   (interactive)
 503   (calc-wrapper
 504    (or var (setq var (calc-read-var-name "Declare: " 0)))
 505    (or var (setq var 'var-All))
 506    (let* (dp decl def row rp)
 507      (or (and (calc-var-value 'var-Decls)
 508               (eq (car-safe var-Decls) 'vec))
 509          (setq var-Decls (list 'vec)))
 510      (setq dp var-Decls)
 511      (while (and (setq dp (cdr dp))
 512                  (or (not (eq (car-safe (car dp)) 'vec))
 513                      (/= (length (car dp)) 3)
 514                      (progn
 515                        (setq row (nth 1 (car dp))
 516                              rp row)
 517                        (if (eq (car-safe row) 'vec)
 518                            (progn
 519                              (while
 520                                  (and (setq rp (cdr rp))
 521                                       (or (not (eq (car-safe (car rp)) 'var))
 522                                           (not (eq (nth 2 (car rp)) var)))))
 523                              (setq rp (car rp)))
 524                          (if (or (not (eq (car-safe row) 'var))
 525                                  (not (eq (nth 2 row) var)))
 526                              (setq rp nil)))
 527                        (not rp)))))
 528      (calc-unread-command ?\C-a)
 529      (setq decl (read-string (format "Declare: %s  to be: " (calc-var-name var))
 530                              (and rp
 531                                   (math-format-flat-expr (nth 2 (car dp)) 0))))
 532      (setq decl (and (string-match "[^ \t]" decl)
 533                      (math-read-exprs decl)))
 534      (if (eq (car-safe decl) 'error)
 535          (error "Bad format in declaration: %s" (nth 2 decl)))
 536      (if (cdr decl)
 537          (setq decl (cons 'vec decl))
 538        (setq decl (car decl)))
 539      (and (eq (car-safe decl) 'vec)
 540           (= (length decl) 2)
 541           (setq decl (nth 1 decl)))
 542      (calc-record (append '(vec) (list (math-build-var-name var))
 543                           (and decl (list decl)))
 544                   "decl")
 545      (setq var-Decls (copy-sequence var-Decls))
 546      (if (eq (car-safe row) 'vec)
 547          (progn
 548            (setcdr row (delq rp (cdr row)))
 549            (or (cdr row)
 550                (setq var-Decls (delq (car dp) var-Decls))))
 551        (setq var-Decls (delq (car dp) var-Decls)))
 552      (if decl
 553          (progn
 554            (setq dp (and (not (eq var 'var-All)) var-Decls))
 555            (while (and (setq dp (cdr dp))
 556                        (or (not (eq (car-safe (car dp)) 'vec))
 557                            (/= (length (car dp)) 3)
 558                            (not (equal (nth 2 (car dp)) decl)))))
 559            (if dp
 560                (setcar (cdr (car dp))
 561                        (append (if (eq (car-safe (nth 1 (car dp))) 'vec)
 562                                    (nth 1 (car dp))
 563                                  (list 'vec (nth 1 (car dp))))
 564                                (list (math-build-var-name var))))
 565              (setq var-Decls (append var-Decls
 566                                      (list (list 'vec
 567                                                  (math-build-var-name var)
 568                                                  decl)))))))
 569      (calc-refresh-evaltos 'var-Decls))))
 570
 571 (defvar calc-dont-insert-variables '(var-FitRules var-FactorRules
 572                                      var-CommuteRules var-JumpRules
 573                                      var-DistribRules var-MergeRules
 574                                      var-NegateRules var-InvertRules
 575                                      var-IntegAfterRules
 576                                      var-TimeZone var-PlotRejects
 577                                      var-PlotData1 var-PlotData2
 578                                      var-PlotData3 var-PlotData4
 579                                      var-PlotData5 var-PlotData6
 580                                      var-DUMMY))
 581
 582 ;; The variable calc-pv-pos is local to calc-permanent-variable, but
 583 ;; used by calc-insert-permanent-variable, which is called by
 584 ;; calc-permanent-variable.
 585 (defvar calc-pv-pos)
 586
 587 (defun calc-permanent-variable (&optional var)
 588   (interactive)
 589   (calc-wrapper
 590    (or var (setq var (calc-read-var-name "Save variable (default all): ")))
 591    (let (calc-pv-pos)
 592      (and var (or (and (boundp var) (symbol-value var))
 593                   (error "No such variable")))
 594      (set-buffer (find-file-noselect (substitute-in-file-name
 595                                       calc-settings-file)))
 596      (if var
 597          (calc-insert-permanent-variable var)
 598        (mapatoms (function
 599                   (lambda (x)
 600                     (and (string-match "\\`var-" (symbol-name x))
 601                          (not (memq x calc-dont-insert-variables))
 602                          (calc-var-value x)
 603                          (not (eq (car-safe (symbol-value x)) 'special-const))
 604                          (calc-insert-permanent-variable x))))))
 605      (save-buffer))))
 606
 607
 608
 609 (defun calc-insert-permanent-variable (var)
 610   (goto-char (point-min))
 611   (if (search-forward (concat "(setq " (symbol-name var) " '") nil t)
 612       (progn
 613         (setq calc-pv-pos (point-marker))
 614         (forward-line -1)
 615         (if (looking-at ";;; Variable .* stored by Calc on ")
 616             (progn
 617               (delete-region (match-end 0) (progn (end-of-line) (point)))
 618               (insert (current-time-string))))
 619         (goto-char (- calc-pv-pos 8 (length (symbol-name var))))
 620         (forward-sexp 1)
 621         (backward-char 1)
 622         (delete-region calc-pv-pos (point)))
 623     (goto-char (point-max))
 624     (insert "\n;;; Variable \""
 625             (symbol-name var)
 626             "\" stored by Calc on "
 627             (current-time-string)
 628             "\n(setq "
 629             (symbol-name var)
 630             " ')\n")
 631     (backward-char 2))
 632   (insert (prin1-to-string (calc-var-value var)))
 633   (forward-line 1))
 634
 635 (defun calc-insert-variables (buf)
 636   (interactive "bBuffer in which to save variable values: ")
 637   (save-excursion
 638     (set-buffer buf)
 639     (mapatoms (function
 640                (lambda (x)
 641                  (and (string-match "\\`var-" (symbol-name x))
 642                       (not (memq x calc-dont-insert-variables))
 643                       (calc-var-value x)
 644                       (not (eq (car-safe (symbol-value x)) 'special-const))
 645                       (or (not (eq x 'var-Decls))
 646                           (not (equal var-Decls '(vec))))
 647                       (or (not (eq x 'var-Holidays))
 648                           (not (equal var-Holidays '(vec (var sat var-sat)
 649                                                          (var sun var-sun)))))
 650                       (insert "(setq "
 651                               (symbol-name x)
 652                               " "
 653                               (prin1-to-string
 654                                (let ((calc-language
 655                                       (if (memq calc-language '(nil big))
 656                                           'flat
 657                                         calc-language)))
 658                                  (math-format-value (symbol-value x) 100000)))
 659                               ")\n")))))))
 660
 661 (defun calc-assign (arg)
 662   (interactive "P")
 663   (calc-slow-wrapper
 664    (calc-binary-op ":=" 'calcFunc-assign arg)))
 665
 666 (defun calc-evalto (arg)
 667   (interactive "P")
 668   (calc-slow-wrapper
 669    (calc-unary-op "=>" 'calcFunc-evalto arg)))
 670
 671 (defun calc-subscript (arg)
 672   (interactive "P")
 673   (calc-slow-wrapper
 674    (calc-binary-op "sub" 'calcFunc-subscr arg)))
 675
 676 (provide 'calc-store)
 677
 678 ;;; arch-tag: 2fbfec82-a521-42ca-bcd8-4f254ae6313e
 679 ;;; calc-store.el ends here