code.delx.au - gnu-emacs/blob - lisp/calc/calc-incom.el

   1 ;;; calc-incom.el --- complex data type input 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 ;;; Incomplete forms.
  34
  35 (defun calc-begin-complex ()
  36   (interactive)
  37   (calc-wrapper
  38    (if (or calc-algebraic-mode calc-incomplete-algebraic-mode)
  39        (calc-alg-entry "(")
  40      (calc-push (list 'incomplete calc-complex-mode)))))
  41
  42 (defun calc-end-complex ()
  43   (interactive)
  44   (calc-comma t)
  45   (calc-wrapper
  46    (let ((top (calc-top 1)))
  47      (if (and (eq (car-safe top) 'incomplete)
  48               (eq (nth 1 top) 'intv))
  49          (progn
  50            (if (< (length top) 4)
  51                (setq top (append top '((neg (var inf var-inf))))))
  52            (if (< (length top) 5)
  53                (setq top (append top '((var inf var-inf)))))
  54            (calc-enter-result 1 "..)" (cdr top)))
  55        (if (not (and (eq (car-safe top) 'incomplete)
  56                      (memq (nth 1 top) '(cplx polar))))
  57            (error "Not entering a complex number"))
  58        (while (< (length top) 4)
  59          (setq top (append top '(0))))
  60        (if (not (and (math-realp (nth 2 top))
  61                      (math-anglep (nth 3 top))))
  62            (error "Components must be real"))
  63        (calc-enter-result 1 "()" (cdr top))))))
  64
  65 (defun calc-begin-vector ()
  66   (interactive)
  67   (calc-wrapper
  68    (if (or calc-algebraic-mode calc-incomplete-algebraic-mode)
  69        (calc-alg-entry "[")
  70      (calc-push '(incomplete vec)))))
  71
  72 (defun calc-end-vector ()
  73   (interactive)
  74   (calc-comma t)
  75   (calc-wrapper
  76    (let ((top (calc-top 1)))
  77      (if (and (eq (car-safe top) 'incomplete)
  78               (eq (nth 1 top) 'intv))
  79          (progn
  80            (if (< (length top) 4)
  81                (setq top (append top '((neg (var inf var-inf))))))
  82            (if (< (length top) 5)
  83                (setq top (append top '((var inf var-inf)))))
  84            (setcar (cdr (cdr top)) (1+ (nth 2 top)))
  85            (calc-enter-result 1 "..]" (cdr top)))
  86        (if (not (and (eq (car-safe top) 'incomplete)
  87                      (eq (nth 1 top) 'vec)))
  88            (error "Not entering a vector"))
  89        (calc-pop-push-record 1 "[]" (cdr top))))))
  90
  91 (defun calc-comma (&optional allow-polar)
  92   (interactive)
  93   (calc-wrapper
  94    (let ((num (calc-find-first-incomplete
  95                (nthcdr calc-stack-top calc-stack) 1)))
  96      (if (= num 0)
  97          (error "Not entering a vector or complex number"))
  98      (let* ((inc (calc-top num))
  99             (stuff (calc-top-list (1- num)))
 100             (new (append inc stuff)))
 101        (if (and (null stuff)
 102                 (not allow-polar)
 103                 (or (eq (nth 1 inc) 'vec)
 104                     (< (length new) 4)))
 105            (setq new (append new
 106                              (if (= (length new) 2)
 107                                  '(0)
 108                                (nthcdr (1- (length new)) new)))))
 109        (or allow-polar
 110            (if (eq (nth 1 new) 'polar)
 111                (setq new (append '(incomplete cplx) (cdr (cdr new))))
 112              (if (eq (nth 1 new) 'intv)
 113                  (setq new (append '(incomplete cplx)
 114                                    (cdr (cdr (cdr new))))))))
 115        (if (and (memq (nth 1 new) '(cplx polar))
 116                 (> (length new) 4))
 117            (error "Too many components in complex number"))
 118        (if (and (eq (nth 1 new) 'intv)
 119                 (> (length new) 5))
 120            (error "Too many components in interval form"))
 121        (calc-pop-push num new)))))
 122
 123 (defun calc-semi ()
 124   (interactive)
 125   (calc-wrapper
 126    (let ((num (calc-find-first-incomplete
 127                (nthcdr calc-stack-top calc-stack) 1)))
 128      (if (= num 0)
 129          (error "Not entering a vector or complex number"))
 130      (let ((inc (calc-top num))
 131            (stuff (calc-top-list (1- num))))
 132        (if (eq (nth 1 inc) 'cplx)
 133            (setq inc (append '(incomplete polar) (cdr (cdr inc))))
 134          (if (eq (nth 1 inc) 'intv)
 135              (setq inc (append '(incomplete polar) (cdr (cdr (cdr inc)))))))
 136        (cond ((eq (nth 1 inc) 'polar)
 137               (let ((new (append inc stuff)))
 138                 (if (> (length new) 4)
 139                     (error "Too many components in complex number")
 140                   (if (= (length new) 2)
 141                       (setq new (append new '(1)))))
 142                 (calc-pop-push num new)))
 143              ((null stuff)
 144               (if (> (length inc) 2)
 145                   (if (math-vectorp (nth 2 inc))
 146                       (calc-comma)
 147                     (calc-pop-push 1
 148                                    (list 'incomplete 'vec (cdr (cdr inc)))
 149                                    (list 'incomplete 'vec)))))
 150              ((math-vectorp (car stuff))
 151               (calc-comma))
 152              ((eq (car-safe (car-safe (nth (+ num calc-stack-top)
 153                                            calc-stack))) 'incomplete)
 154               (calc-end-vector)
 155               (calc-comma)
 156               (let ((calc-algebraic-mode nil)
 157                     (calc-incomplete-algebraic-mode nil))
 158                 (calc-begin-vector)))
 159              ((or (= (length inc) 2)
 160                   (math-vectorp (nth 2 inc)))
 161               (calc-pop-push num
 162                              (append inc (list (cons 'vec stuff)))
 163                              (list 'incomplete 'vec)))
 164              (t
 165               (calc-pop-push num
 166                              (list 'incomplete 'vec
 167                                    (cons 'vec (append (cdr (cdr inc)) stuff)))
 168                              (list 'incomplete 'vec))))))))
 169
 170 ;; The following variables are initially declared in calc.el,
 171 ;; but are used by calc-digit-dots.
 172 (defvar calc-prev-char)
 173 (defvar calc-prev-prev-char)
 174 (defvar calc-digit-value)
 175
 176 (defun calc-digit-dots ()
 177   (if (eq calc-prev-char ?.)
 178       (progn
 179         (delete-char -1)
 180         (if (calc-minibuffer-contains ".*\\.\\'")
 181             (delete-char -1))
 182         (setq calc-prev-char 'dots
 183               last-command-event 32)
 184         (if calc-prev-prev-char
 185             (calcDigit-nondigit)
 186           (setq calc-digit-value nil)
 187           (let ((inhibit-read-only t))
 188             (erase-buffer))
 189           (exit-minibuffer)))
 190     ;; just ignore extra decimal point, anticipating ".."
 191     (delete-char -1)))
 192
 193 (defun calc-dots ()
 194   (interactive)
 195   (calc-wrapper
 196    (let ((num (calc-find-first-incomplete
 197                (nthcdr calc-stack-top calc-stack) 1)))
 198      (if (= num 0)
 199          (error "Not entering an interval form"))
 200      (let* ((inc (calc-top num))
 201             (stuff (calc-top-list (1- num)))
 202             (new (append inc stuff)))
 203        (if (not (eq (nth 1 new) 'intv))
 204            (setq new (append '(incomplete intv)
 205                              (if (eq (nth 1 new) 'vec) '(2) '(0))
 206                              (cdr (cdr new)))))
 207        (if (and (null stuff)
 208                 (= (length new) 3))
 209            (setq new (append new '((neg (var inf var-inf))))))
 210        (if (> (length new) 5)
 211            (error "Too many components in interval form"))
 212        (calc-pop-push num new)))))
 213
 214 (defun calc-find-first-incomplete (stack n)
 215   (cond ((null stack)
 216          0)
 217         ((eq (car-safe (car-safe (car stack))) 'incomplete)
 218          n)
 219         (t
 220          (calc-find-first-incomplete (cdr stack) (1+ n)))))
 221
 222 (defun calc-incomplete-error (a)
 223   (cond ((memq (nth 1 a) '(cplx polar))
 224          (error "Complex number is incomplete"))
 225         ((eq (nth 1 a) 'vec)
 226          (error "Vector is incomplete"))
 227         ((eq (nth 1 a) 'intv)
 228          (error "Interval form is incomplete"))
 229         (t (error "Object is incomplete"))))
 230
 231 (provide 'calc-incom)
 232
 233 ;; arch-tag: b8001270-4dc7-481b-a3e3-a952e19b390d
 234 ;;; calc-incom.el ends here