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, 2008, 2009, 2010, 2011 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 3 of the License, or
  14 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 ;; This file is autoloaded from calc-ext.el.
  29
  30 (require 'calc-ext)
  31 (require 'calc-macs)
  32
  33 ;;; Memory commands.
  34
  35 (defvar calc-store-keep nil)
  36 (defun calc-store (&optional var)
  37   (interactive)
  38   (let ((calc-store-keep t))
  39     (calc-store-into var)))
  40
  41 (defvar calc-given-value-flag nil)
  42 (defvar calc-given-value)
  43
  44 (defun calc-store-into (&optional var)
  45   (interactive)
  46   (calc-wrapper
  47    (let ((calc-given-value nil)
  48          (calc-given-value-flag 1))
  49      (or var (setq var (calc-read-var-name "Store: " t)))
  50      (if var
  51          (let ((found (assq var '( ( + . calc-store-plus )
  52                                    ( - . calc-store-minus )
  53                                    ( * . calc-store-times )
  54                                    ( / . calc-store-div )
  55                                    ( ^ . calc-store-power )
  56                                    ( | . calc-store-concat ) ))))
  57            (if found
  58                (funcall (cdr found))
  59              (let ((msg
  60                     (calc-store-value var (or calc-given-value (calc-top 1))
  61                                       "" calc-given-value-flag)))
  62                (message (concat "Stored to variable \"%s\"" msg)
  63                         (calc-var-name var)))))
  64        (setq var (calc-is-assignments (calc-top 1)))
  65        (if var
  66            (while var
  67              (let ((msg
  68                     (calc-store-value (car (car var)) (cdr (car var))
  69                                       (if (not (cdr var)) "")
  70                                       (if (not (cdr var)) 1))))
  71                (message (concat "Stored to variable \"%s\"" msg)
  72                         (calc-var-name (car (car var)))))
  73              (setq var (cdr var))))))))
  74
  75 (defun calc-store-plus (&optional var)
  76   (interactive)
  77   (calc-store-binary var "+" '+))
  78
  79 (defun calc-store-minus (&optional var)
  80   (interactive)
  81   (calc-store-binary var "-" '-))
  82
  83 (defun calc-store-times (&optional var)
  84   (interactive)
  85   (calc-store-binary var "*" '*))
  86
  87 (defun calc-store-div (&optional var)
  88   (interactive)
  89   (calc-store-binary var "/" '/))
  90
  91 (defun calc-store-power (&optional var)
  92   (interactive)
  93   (calc-store-binary var "^" '^))
  94
  95 (defun calc-store-concat (&optional var)
  96   (interactive)
  97   (calc-store-binary var "|" '|))
  98
  99 (defun calc-store-neg (n &optional var)
 100   (interactive "p")
 101   (calc-store-binary var "n" '/ (- n)))
 102
 103 (defun calc-store-inv (n &optional var)
 104   (interactive "p")
 105   (calc-store-binary var "&" '^ (- n)))
 106
 107 (defun calc-store-incr (n &optional var)
 108   (interactive "p")
 109   (calc-store-binary var "n" '- (- n)))
 110
 111 (defun calc-store-decr (n &optional var)
 112   (interactive "p")
 113   (calc-store-binary var "n" '- n))
 114
 115 (defun calc-store-value (var value tag &optional pop)
 116   (let ((msg ""))
 117     (if var
 118         (let ((old (calc-var-value var)))
 119           (set var value)
 120           (if pop (or calc-store-keep (calc-pop-stack pop)))
 121           (calc-record-undo (list 'store (symbol-name var) old))
 122           (if tag
 123               (let ((calc-full-trail-vectors nil))
 124                 (calc-record value (format ">%s%s" tag (calc-var-name var)))))
 125           (cond
 126            ((and (memq var '(var-e var-i var-pi var-phi var-gamma))
 127                  (eq (car-safe old) 'special-const))
 128             (setq msg (format " (Note: Built-in definition of %s has been lost)"
 129                               (calc-var-name var))))
 130            ((and (memq var '(var-inf var-uinf var-nan))
 131                  (null old))
 132             (setq msg (format " (Note: %s has built-in meanings which may interfere)"
 133                               (calc-var-name var)))))
 134           (calc-refresh-evaltos var)))
 135     msg))
 136
 137 (defun calc-var-name (var)
 138   (if (symbolp var) (setq var (symbol-name var)))
 139   (if (string-match "\\`var-." var)
 140       (substring var 4)
 141     var))
 142
 143 (defun calc-store-binary (var tag func &optional val)
 144   (calc-wrapper
 145    (let ((calc-simplify-mode (if (eq calc-simplify-mode 'none)
 146                                  'num calc-simplify-mode))
 147          (value (or val (calc-top 1))))
 148      (or var (setq var (calc-read-var-name (format "Store %s: " tag))))
 149      (if var
 150          (let ((old (calc-var-value var)))
 151            (if (eq (car-safe old) 'special-const)
 152                (error "\"%s\" is a special constant" (calc-var-name var)))
 153            (if (not old)
 154                (if (memq var '(var-inf var-uinf var-nan))
 155                    (error "\"%s\" is a special variable" (calc-var-name var))
 156                  (error "No such variable: \"%s\"" (calc-var-name var))))
 157            (if (stringp old)
 158                (setq old (math-read-expr old)))
 159            (if (eq (car-safe old) 'error)
 160                (error "Bad format in variable contents: %s" (nth 2 old)))
 161            (calc-store-value var
 162                              (calc-normalize (if (calc-is-inverse)
 163                                                  (list func value old)
 164                                                (list func old value)))
 165                              tag (and (not val) 1))
 166            (message "Variable \"%s\" changed" (calc-var-name var)))))))
 167
 168 (defvar calc-var-name-map nil "Keymap for reading Calc variable names.")
 169 (if calc-var-name-map
 170     ()
 171   (setq calc-var-name-map (copy-keymap minibuffer-local-completion-map))
 172   (define-key calc-var-name-map " " 'self-insert-command)
 173   (mapc (function
 174          (lambda (x)
 175           (define-key calc-var-name-map (char-to-string x)
 176             'calcVar-digit)))
 177         "0123456789")
 178   (mapc (function
 179          (lambda (x)
 180           (define-key calc-var-name-map (char-to-string x)
 181             'calcVar-oper)))
 182         "+-*/^|"))
 183
 184 (defvar calc-store-opers)
 185
 186 (defvar calc-read-var-name-history nil
 187   "History for reading variable names.")
 188
 189 (defun calc-read-var-name (prompt &optional calc-store-opers)
 190   (setq calc-given-value nil
 191         calc-aborted-prefix nil)
 192   (let ((var (concat
 193               "var-"
 194               (let ((minibuffer-completion-table
 195                      (mapcar (lambda (x) (substring x 4))
 196                              (all-completions "var-" obarray)))
 197                     (minibuffer-completion-predicate
 198                      (lambda (x) (boundp (intern (concat "var-" x)))))
 199                     (minibuffer-completion-confirm t))
 200                 (read-from-minibuffer
 201                  prompt nil calc-var-name-map nil
 202                  'calc-read-var-name-history)))))
 203     (setq calc-aborted-prefix "")
 204     (and (not (equal var "var-"))
 205          (if (string-match "\\`\\([-a-zA-Zα-ωΑ-Ω0-9]+\\) *:?=" var)
 206              (if (null calc-given-value-flag)
 207                  (error "Assignment is not allowed in this command")
 208                (let ((svar (intern (substring var 0 (match-end 1)))))
 209                  (setq calc-given-value-flag 0
 210                        calc-given-value (math-read-expr
 211                                          (substring var (match-end 0))))
 212                  (if (eq (car-safe calc-given-value) 'error)
 213                      (error "Bad format: %s" (nth 2 calc-given-value)))
 214                  (setq calc-given-value (math-evaluate-expr calc-given-value))
 215                  svar))
 216            (intern var)))))
 217
 218 (defun calcVar-digit ()
 219   (interactive)
 220   (if (calc-minibuffer-contains "\\'")
 221       (if (eq calc-store-opers 0)
 222           (beep)
 223         (insert "q")
 224         (self-insert-and-exit))
 225     (self-insert-command 1)))
 226
 227 (defun calcVar-oper ()
 228   (interactive)
 229   (if (and (eq calc-store-opers t)
 230            (calc-minibuffer-contains "\\'"))
 231       (progn
 232         (erase-buffer)
 233         (self-insert-and-exit))
 234     (self-insert-command 1)))
 235
 236 (defun calc-store-map (&optional oper var)
 237   (interactive)
 238   (calc-wrapper
 239    (let* ((sel-mode nil)
 240           (calc-dollar-values (mapcar 'calc-get-stack-element
 241                                       (nthcdr calc-stack-top calc-stack)))
 242           (calc-dollar-used 0)
 243           (oper (or oper (calc-get-operator "Store Mapping")))
 244           (nargs (car oper)))
 245      (or var (setq var (calc-read-var-name (format "Store Mapping %s: "
 246                                                    (nth 2 oper)))))
 247      (if var
 248          (let ((old (calc-var-value var)))
 249            (if (eq (car-safe old) 'special-const)
 250                (error "\"%s\" is a special constant" (calc-var-name var)))
 251            (if (not old)
 252                (if (memq var '(var-inf var-uinf var-nan))
 253                    (error "\"%s\" is a special variable" (calc-var-name var))
 254                  (error "No such variable: \"%s\"" (calc-var-name var))))
 255            (let ((calc-simplify-mode (if (eq calc-simplify-mode 'none)
 256                                          'num calc-simplify-mode))
 257                  (values (and (> nargs 1)
 258                               (calc-top-list (1- nargs) (1+ calc-dollar-used)))))
 259              (message "Working...")
 260              (calc-set-command-flag 'clear-message)
 261              (if (stringp old)
 262                  (setq old (math-read-expr old)))
 263              (if (eq (car-safe old) 'error)
 264                  (error "Bad format in variable contents: %s" (nth 2 old)))
 265              (setq values (if (calc-is-inverse)
 266                               (append values (list old))
 267                             (append (list old) values)))
 268              (calc-store-value var
 269                                (calc-normalize (cons (nth 1 oper) values))
 270                                (nth 2 oper)
 271                                (+ calc-dollar-used (1- nargs)))
 272              (message "Variable \"%s\" changed" (calc-var-name var))))))))
 273
 274
 275 (defun calc-store-exchange (&optional var)
 276   (interactive)
 277   (calc-wrapper
 278    (let ((calc-given-value nil)
 279          (calc-given-value-flag 1)
 280          top)
 281      (or var (setq var (calc-read-var-name "Exchange with: ")))
 282      (if var
 283          (let ((value (calc-var-value var)))
 284            (if (eq (car-safe value) 'special-const)
 285                (error "\"%s\" is a special constant" (calc-var-name var)))
 286            (if (not value)
 287                (if (memq var '(var-inf var-uinf var-nan))
 288                    (error "\"%s\" is a special variable" (calc-var-name var))
 289                  (error "No such variable: \"%s\"" (calc-var-name var))))
 290            (setq top (or calc-given-value (calc-top 1)))
 291            (calc-store-value var top nil)
 292            (calc-pop-push-record calc-given-value-flag
 293                                  (concat "<>" (calc-var-name var)) value))))))
 294
 295 (defun calc-unstore (&optional var)
 296   (interactive)
 297   (calc-wrapper
 298    (or var (setq var (calc-read-var-name "Unstore: ")))
 299    (if var
 300        (progn
 301          (and (memq var '(var-e var-i var-pi var-phi var-gamma))
 302               (eq (car-safe (calc-var-value var)) 'special-const)
 303               (message "(Note: Built-in definition of %s has been lost)" var))
 304          (if (and (boundp var) (symbol-value var))
 305              (message "Unstored variable \"%s\"" (calc-var-name var))
 306            (message "Variable \"%s\" remains unstored" (calc-var-name var)))
 307          (makunbound var)
 308          (calc-refresh-evaltos var)))))
 309
 310 (defun calc-let (&optional var)
 311   (interactive)
 312   (calc-wrapper
 313    (let* ((calc-given-value nil)
 314           (calc-given-value-flag 1)
 315           thing value)
 316      (or var (setq var (calc-read-var-name "Let variable: ")))
 317      (if calc-given-value
 318          (setq value calc-given-value
 319                thing (calc-top 1))
 320        (setq value (calc-top 1)
 321              thing (calc-top 2)))
 322      (setq var (if var
 323                    (list (cons var value))
 324                  (calc-is-assignments value)))
 325      (if var
 326          (calc-pop-push-record
 327           (1+ calc-given-value-flag)
 328           (concat "=" (calc-var-name (car (car var))))
 329           (let ((saved-val (mapcar (function
 330                                     (lambda (v)
 331                                       (and (boundp (car v))
 332                                            (symbol-value (car v)))))
 333                                    var)))
 334             (unwind-protect
 335                 (let ((vv var))
 336                   (while vv
 337                     (set (car (car vv)) (calc-normalize (cdr (car vv))))
 338                     (calc-refresh-evaltos (car (car vv)))
 339                     (setq vv (cdr vv)))
 340                   (math-evaluate-expr thing))
 341               (while saved-val
 342                 (if (car saved-val)
 343                     (set (car (car var)) (car saved-val))
 344                   (makunbound (car (car var))))
 345                 (setq saved-val (cdr saved-val)
 346                       var (cdr var)))
 347               (calc-handle-whys))))))))
 348
 349 (defun calc-is-assignments (value)
 350   (if (memq (car-safe value) '(calcFunc-eq calcFunc-assign))
 351       (and (eq (car-safe (nth 1 value)) 'var)
 352            (list (cons (nth 2 (nth 1 value)) (nth 2 value))))
 353     (if (eq (car-safe value) 'vec)
 354         (let ((vv nil))
 355           (while (and (setq value (cdr value))
 356                       (memq (car-safe (car value))
 357                             '(calcFunc-eq calcFunc-assign))
 358                       (eq (car-safe (nth 1 (car value))) 'var))
 359             (setq vv (cons (cons (nth 2 (nth 1 (car value)))
 360                                  (nth 2 (car value)))
 361                            vv)))
 362           (and (not value)
 363                vv)))))
 364
 365 (defun calc-recall (&optional var)
 366   (interactive)
 367   (calc-wrapper
 368    (or var (setq var (calc-read-var-name "Recall: ")))
 369    (if var
 370        (let ((value (calc-var-value var)))
 371          (or value
 372              (error "No such variable: \"%s\"" (calc-var-name var)))
 373          (if (stringp value)
 374              (setq value (math-read-expr value)))
 375          (if (eq (car-safe value) 'error)
 376              (error "Bad format in variable contents: %s" (nth 2 value)))
 377          (setq value (calc-normalize value))
 378          (let ((calc-full-trail-vectors nil))
 379            (calc-record value (concat "<" (calc-var-name var))))
 380          (calc-push value)))))
 381
 382 (defun calc-store-quick ()
 383   (interactive)
 384   (calc-store (intern (format "var-q%c" last-command-event))))
 385
 386 (defun calc-store-into-quick ()
 387   (interactive)
 388   (calc-store-into (intern (format "var-q%c" last-command-event))))
 389
 390 (defun calc-recall-quick ()
 391   (interactive)
 392   (calc-recall (intern (format "var-q%c" last-command-event))))
 393
 394 (defun calc-copy-special-constant (&optional sconst var)
 395   (interactive)
 396   (let ((sc '(("")
 397               ("e" . (special-const (math-e)))
 398               ("pi" . (special-const (math-pi)))
 399               ("i" . (special-const (math-imaginary 1)))
 400               ("phi" . (special-const (math-phi)))
 401               ("gamma" . (special-const (math-gamma-const))))))
 402   (calc-wrapper
 403    (or sconst (setq sconst (completing-read "Special constant: " sc nil t)))
 404    (unless (string= sconst "")
 405      (let ((value (cdr (assoc sconst sc))))
 406        (or var (setq var (calc-read-var-name
 407                             (format "Copy special constant %s, to: "
 408                                     sconst))))
 409        (if var
 410            (let ((msg (calc-store-value var value "")))
 411              (message (concat "Special constant \"%s\" copied to \"%s\"" msg)
 412                       sconst (calc-var-name var)))))))))
 413
 414 (defun calc-copy-variable (&optional var1 var2)
 415   (interactive)
 416   (calc-wrapper
 417    (or var1 (setq var1 (calc-read-var-name "Copy variable: ")))
 418    (if var1
 419        (let ((value (calc-var-value var1)))
 420          (or value
 421              (error "No such variable: \"%s\"" (calc-var-name var1)))
 422          (or var2 (setq var2 (calc-read-var-name
 423                               (format "Copy variable: %s, to: "
 424                                       (calc-var-name var1)))))
 425          (if var2
 426              (let ((msg (calc-store-value var2 value "")))
 427                (message (concat "Variable \"%s\" copied to \"%s\"" msg)
 428                         (calc-var-name var1) (calc-var-name var2))))))))
 429
 430 (defvar calc-last-edited-variable nil)
 431 (defun calc-edit-variable (&optional var)
 432   (interactive)
 433   (calc-wrapper
 434    (or var (setq var (calc-read-var-name
 435                       (if calc-last-edited-variable
 436                           (format "Edit (default %s): "
 437                                   (calc-var-name calc-last-edited-variable))
 438                         "Edit: "))))
 439    (or var (setq var calc-last-edited-variable))
 440    (if var
 441        (let* ((value (calc-var-value var)))
 442          (if (eq (car-safe value) 'special-const)
 443              (error "%s is a special constant" var))
 444          (setq calc-last-edited-variable var)
 445          (calc-edit-mode (list 'calc-finish-stack-edit (list 'quote var))
 446                          t
 447                          (concat "Editing variable `" (calc-var-name var) "'. "))
 448          (and value
 449               (insert (math-format-nice-expr value (frame-width)) "\n")))))
 450   (calc-show-edit-buffer))
 451
 452 (defun calc-edit-Decls ()
 453   (interactive)
 454   (calc-edit-variable 'var-Decls))
 455
 456 (defun calc-edit-EvalRules ()
 457   (interactive)
 458   (calc-edit-variable 'var-EvalRules))
 459
 460 (defun calc-edit-FitRules ()
 461   (interactive)
 462   (calc-edit-variable 'var-FitRules))
 463
 464 (defun calc-edit-GenCount ()
 465   (interactive)
 466   (calc-edit-variable 'var-GenCount))
 467
 468 (defun calc-edit-Holidays ()
 469   (interactive)
 470   (calc-edit-variable 'var-Holidays))
 471
 472 (defun calc-edit-IntegLimit ()
 473   (interactive)
 474   (calc-edit-variable 'var-IntegLimit))
 475
 476 (defun calc-edit-LineStyles ()
 477   (interactive)
 478   (calc-edit-variable 'var-LineStyles))
 479
 480 (defun calc-edit-PointStyles ()
 481   (interactive)
 482   (calc-edit-variable 'var-PointStyles))
 483
 484 (defun calc-edit-PlotRejects ()
 485   (interactive)
 486   (calc-edit-variable 'var-PlotRejects))
 487
 488 (defun calc-edit-AlgSimpRules ()
 489   (interactive)
 490   (calc-edit-variable 'var-AlgSimpRules))
 491
 492 (defun calc-edit-TimeZone ()
 493   (interactive)
 494   (calc-edit-variable 'var-TimeZone))
 495
 496 (defun calc-edit-Units ()
 497   (interactive)
 498   (calc-edit-variable 'var-Units))
 499
 500 (defun calc-edit-ExtSimpRules ()
 501   (interactive)
 502   (calc-edit-variable 'var-ExtSimpRules))
 503
 504 (defun calc-declare-variable (&optional var)
 505   (interactive)
 506   (calc-wrapper
 507    (or var (setq var (calc-read-var-name "Declare: " 0)))
 508    (or var (setq var 'var-All))
 509    (let* (dp decl def row rp)
 510      (or (and (calc-var-value 'var-Decls)
 511               (eq (car-safe var-Decls) 'vec))
 512          (setq var-Decls (list 'vec)))
 513      (setq dp var-Decls)
 514      (while (and (setq dp (cdr dp))
 515                  (or (not (eq (car-safe (car dp)) 'vec))
 516                      (/= (length (car dp)) 3)
 517                      (progn
 518                        (setq row (nth 1 (car dp))
 519                              rp row)
 520                        (if (eq (car-safe row) 'vec)
 521                            (progn
 522                              (while
 523                                  (and (setq rp (cdr rp))
 524                                       (or (not (eq (car-safe (car rp)) 'var))
 525                                           (not (eq (nth 2 (car rp)) var)))))
 526                              (setq rp (car rp)))
 527                          (if (or (not (eq (car-safe row) 'var))
 528                                  (not (eq (nth 2 row) var)))
 529                              (setq rp nil)))
 530                        (not rp)))))
 531      (calc-unread-command ?\C-a)
 532      (setq decl (read-string (format "Declare: %s  to be: " (calc-var-name var))
 533                              (and rp
 534                                   (math-format-flat-expr (nth 2 (car dp)) 0))))
 535      (setq decl (and (string-match "[^ \t]" decl)
 536                      (math-read-exprs decl)))
 537      (if (eq (car-safe decl) 'error)
 538          (error "Bad format in declaration: %s" (nth 2 decl)))
 539      (if (cdr decl)
 540          (setq decl (cons 'vec decl))
 541        (setq decl (car decl)))
 542      (and (eq (car-safe decl) 'vec)
 543           (= (length decl) 2)
 544           (setq decl (nth 1 decl)))
 545      (calc-record (append '(vec) (list (math-build-var-name var))
 546                           (and decl (list decl)))
 547                   "decl")
 548      (setq var-Decls (copy-sequence var-Decls))
 549      (if (eq (car-safe row) 'vec)
 550          (progn
 551            (setcdr row (delq rp (cdr row)))
 552            (or (cdr row)
 553                (setq var-Decls (delq (car dp) var-Decls))))
 554        (setq var-Decls (delq (car dp) var-Decls)))
 555      (if decl
 556          (progn
 557            (setq dp (and (not (eq var 'var-All)) var-Decls))
 558            (while (and (setq dp (cdr dp))
 559                        (or (not (eq (car-safe (car dp)) 'vec))
 560                            (/= (length (car dp)) 3)
 561                            (not (equal (nth 2 (car dp)) decl)))))
 562            (if dp
 563                (setcar (cdr (car dp))
 564                        (append (if (eq (car-safe (nth 1 (car dp))) 'vec)
 565                                    (nth 1 (car dp))
 566                                  (list 'vec (nth 1 (car dp))))
 567                                (list (math-build-var-name var))))
 568              (setq var-Decls (append var-Decls
 569                                      (list (list 'vec
 570                                                  (math-build-var-name var)
 571                                                  decl)))))))
 572      (calc-refresh-evaltos 'var-Decls))))
 573
 574 (defvar calc-dont-insert-variables '(var-FitRules var-FactorRules
 575                                      var-CommuteRules var-JumpRules
 576                                      var-DistribRules var-MergeRules
 577                                      var-NegateRules var-InvertRules
 578                                      var-IntegAfterRules
 579                                      var-TimeZone var-PlotRejects
 580                                      var-PlotData1 var-PlotData2
 581                                      var-PlotData3 var-PlotData4
 582                                      var-PlotData5 var-PlotData6
 583                                      var-DUMMY))
 584
 585 ;; The variable calc-pv-pos is local to calc-permanent-variable, but
 586 ;; used by calc-insert-permanent-variable, which is called by
 587 ;; calc-permanent-variable.
 588 (defvar calc-pv-pos)
 589
 590 (defun calc-permanent-variable (&optional var)
 591   (interactive)
 592   (calc-wrapper
 593    (or var (setq var (calc-read-var-name "Save variable (default all): ")))
 594    (let (calc-pv-pos)
 595      (and var (or (and (boundp var) (symbol-value var))
 596                   (error "No such variable")))
 597      (set-buffer (find-file-noselect (substitute-in-file-name
 598                                       calc-settings-file)))
 599      (if var
 600          (calc-insert-permanent-variable var)
 601        (mapatoms (function
 602                   (lambda (x)
 603                     (and (string-match "\\`var-" (symbol-name x))
 604                          (not (memq x calc-dont-insert-variables))
 605                          (calc-var-value x)
 606                          (not (eq (car-safe (symbol-value x)) 'special-const))
 607                          (calc-insert-permanent-variable x))))))
 608      (save-buffer))))
 609
 610
 611
 612 (defun calc-insert-permanent-variable (var)
 613   (goto-char (point-min))
 614   (if (search-forward (concat "(setq " (symbol-name var) " '") nil t)
 615       (progn
 616         (setq calc-pv-pos (point-marker))
 617         (forward-line -1)
 618         (if (looking-at ";;; Variable .* stored by Calc on ")
 619             (progn
 620               (delete-region (match-end 0) (progn (end-of-line) (point)))
 621               (insert (current-time-string))))
 622         (goto-char (- calc-pv-pos 8 (length (symbol-name var))))
 623         (forward-sexp 1)
 624         (backward-char 1)
 625         (delete-region calc-pv-pos (point)))
 626     (goto-char (point-max))
 627     (insert "\n;;; Variable \""
 628             (symbol-name var)
 629             "\" stored by Calc on "
 630             (current-time-string)
 631             "\n(setq "
 632             (symbol-name var)
 633             " ')\n")
 634     (backward-char 2))
 635   (insert (prin1-to-string (calc-var-value var)))
 636   (forward-line 1))
 637
 638 (defun calc-insert-variables (buf)
 639   (interactive "bBuffer in which to save variable values: ")
 640   (with-current-buffer buf
 641     (mapatoms (function
 642                (lambda (x)
 643                  (and (string-match "\\`var-" (symbol-name x))
 644                       (not (memq x calc-dont-insert-variables))
 645                       (calc-var-value x)
 646                       (not (eq (car-safe (symbol-value x)) 'special-const))
 647                       (or (not (eq x 'var-Decls))
 648                           (not (equal var-Decls '(vec))))
 649                       (or (not (eq x 'var-Holidays))
 650                           (not (equal var-Holidays '(vec (var sat var-sat)
 651                                                          (var sun var-sun)))))
 652                       (insert "(setq "
 653                               (symbol-name x)
 654                               " "
 655                               (prin1-to-string
 656                                (let ((calc-language
 657                                       (if (memq calc-language '(nil big))
 658                                           'flat
 659                                         calc-language)))
 660                                  (math-format-value (symbol-value x) 100000)))
 661                               ")\n")))))))
 662
 663 (defun calc-assign (arg)
 664   (interactive "P")
 665   (calc-slow-wrapper
 666    (calc-binary-op ":=" 'calcFunc-assign arg)))
 667
 668 (defun calc-evalto (arg)
 669   (interactive "P")
 670   (calc-slow-wrapper
 671    (calc-unary-op "=>" 'calcFunc-evalto arg)))
 672
 673 (defun calc-subscript (arg)
 674   (interactive "P")
 675   (calc-slow-wrapper
 676    (calc-binary-op "sub" 'calcFunc-subscr arg)))
 677
 678 (provide 'calc-store)
 679
 680 ;; Local variables:
 681 ;; coding: utf-8
 682 ;; End:
 683
 684 ;;; calc-store.el ends here