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;;; calc-incom.el --- complex data type input functions for Calc
;; Copyright (C) 1990-1993, 2001-2020 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)
;;; Incomplete forms.
(defun calc-begin-complex ()
(interactive)
(calc-wrapper
(if (or calc-algebraic-mode calc-incomplete-algebraic-mode)
(calc-alg-entry "(")
(calc-push (list 'incomplete calc-complex-mode)))))
(defun calc-end-complex ()
(interactive)
(calc-comma t)
(calc-wrapper
(let ((top (calc-top 1)))
(if (and (eq (car-safe top) 'incomplete)
(eq (nth 1 top) 'intv))
(progn
(if (< (length top) 4)
(setq top (append top '((neg (var inf var-inf))))))
(if (< (length top) 5)
(setq top (append top '((var inf var-inf)))))
(calc-enter-result 1 "..)" (cdr top)))
(if (not (and (eq (car-safe top) 'incomplete)
(memq (nth 1 top) '(cplx polar))))
(error "Not entering a complex number"))
(while (< (length top) 4)
(setq top (append top '(0))))
(if (not (and (math-realp (nth 2 top))
(math-anglep (nth 3 top))))
(error "Components must be real"))
(calc-enter-result 1 "()" (cdr top))))))
(defun calc-begin-vector ()
(interactive)
(calc-wrapper
(if (or calc-algebraic-mode calc-incomplete-algebraic-mode)
(calc-alg-entry "[")
(calc-push '(incomplete vec)))))
(defun calc-end-vector ()
(interactive)
(calc-comma t)
(calc-wrapper
(let ((top (calc-top 1)))
(if (and (eq (car-safe top) 'incomplete)
(eq (nth 1 top) 'intv))
(progn
(if (< (length top) 4)
(setq top (append top '((neg (var inf var-inf))))))
(if (< (length top) 5)
(setq top (append top '((var inf var-inf)))))
(setcar (cdr (cdr top)) (1+ (nth 2 top)))
(calc-enter-result 1 "..]" (cdr top)))
(if (not (and (eq (car-safe top) 'incomplete)
(eq (nth 1 top) 'vec)))
(error "Not entering a vector"))
(calc-pop-push-record 1 "[]" (cdr top))))))
(defun calc-comma (&optional allow-polar)
(interactive)
(calc-wrapper
(let ((num (calc-find-first-incomplete
(nthcdr calc-stack-top calc-stack) 1)))
(if (= num 0)
(error "Not entering a vector or complex number"))
(let* ((inc (calc-top num))
(stuff (calc-top-list (1- num)))
(new (append inc stuff)))
(if (and (null stuff)
(not allow-polar)
(or (eq (nth 1 inc) 'vec)
(< (length new) 4)))
(setq new (append new
(if (= (length new) 2)
'(0)
(nthcdr (1- (length new)) new)))))
(or allow-polar
(if (eq (nth 1 new) 'polar)
(setq new (append '(incomplete cplx) (cdr (cdr new))))
(if (eq (nth 1 new) 'intv)
(setq new (append '(incomplete cplx)
(cdr (cdr (cdr new))))))))
(if (and (memq (nth 1 new) '(cplx polar))
(> (length new) 4))
(error "Too many components in complex number"))
(if (and (eq (nth 1 new) 'intv)
(> (length new) 5))
(error "Too many components in interval form"))
(calc-pop-push num new)))))
(defun calc-semi ()
(interactive)
(calc-wrapper
(let ((num (calc-find-first-incomplete
(nthcdr calc-stack-top calc-stack) 1)))
(if (= num 0)
(error "Not entering a vector or complex number"))
(let ((inc (calc-top num))
(stuff (calc-top-list (1- num))))
(if (eq (nth 1 inc) 'cplx)
(setq inc (append '(incomplete polar) (cdr (cdr inc))))
(if (eq (nth 1 inc) 'intv)
(setq inc (append '(incomplete polar) (cdr (cdr (cdr inc)))))))
(cond ((eq (nth 1 inc) 'polar)
(let ((new (append inc stuff)))
(if (> (length new) 4)
(error "Too many components in complex number")
(if (= (length new) 2)
(setq new (append new '(1)))))
(calc-pop-push num new)))
((null stuff)
(if (> (length inc) 2)
(if (math-vectorp (nth 2 inc))
(calc-comma)
(calc-pop-push 1
(list 'incomplete 'vec (cdr (cdr inc)))
(list 'incomplete 'vec)))))
((math-vectorp (car stuff))
(calc-comma))
((eq (car-safe (car-safe (nth (+ num calc-stack-top)
calc-stack))) 'incomplete)
(calc-end-vector)
(calc-comma)
(let ((calc-algebraic-mode nil)
(calc-incomplete-algebraic-mode nil))
(calc-begin-vector)))
((or (= (length inc) 2)
(math-vectorp (nth 2 inc)))
(calc-pop-push num
(append inc (list (cons 'vec stuff)))
(list 'incomplete 'vec)))
(t
(calc-pop-push num
(list 'incomplete 'vec
(cons 'vec (append (cdr (cdr inc)) stuff)))
(list 'incomplete 'vec))))))))
;; The following variables are initially declared in calc.el,
;; but are used by calc-digit-dots.
(defvar calc-prev-char)
(defvar calc-prev-prev-char)
(defvar calc-digit-value)
(defun calc-digit-dots ()
(if (eq calc-prev-char ?.)
(progn
(delete-char -1)
(if (calc-minibuffer-contains ".*\\.\\'")
(delete-char -1))
(setq calc-prev-char 'dots
last-command-event 32)
(if calc-prev-prev-char
(calcDigit-nondigit)
(setq calc-digit-value nil)
(let ((inhibit-read-only t))
(erase-buffer))
(exit-minibuffer)))
;; just ignore extra decimal point, anticipating ".."
(delete-char -1)))
(defun calc-dots ()
(interactive)
(calc-wrapper
(let ((num (calc-find-first-incomplete
(nthcdr calc-stack-top calc-stack) 1)))
(if (= num 0)
(error "Not entering an interval form"))
(let* ((inc (calc-top num))
(stuff (calc-top-list (1- num)))
(new (append inc stuff)))
(if (not (eq (nth 1 new) 'intv))
(setq new (append '(incomplete intv)
(if (eq (nth 1 new) 'vec) '(2) '(0))
(cdr (cdr new)))))
(if (and (null stuff)
(= (length new) 3))
(setq new (append new '((neg (var inf var-inf))))))
(if (> (length new) 5)
(error "Too many components in interval form"))
(calc-pop-push num new)))))
(defun calc-find-first-incomplete (stack n)
(cond ((null stack)
0)
((eq (car-safe (car-safe (car stack))) 'incomplete)
n)
(t
(calc-find-first-incomplete (cdr stack) (1+ n)))))
(defun calc-incomplete-error (a)
(cond ((memq (nth 1 a) '(cplx polar))
(error "Complex number is incomplete"))
((eq (nth 1 a) 'vec)
(error "Vector is incomplete"))
((eq (nth 1 a) 'intv)
(error "Interval form is incomplete"))
(t (error "Object is incomplete"))))
(provide 'calc-incom)
;;; calc-incom.el ends here
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