;;; calc-sel.el --- data selection functions for Calc
-;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
+;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2005
+;; Free Software Foundation, Inc.
;; Author: David Gillespie <daveg@synaptics.com>
-;; Maintainer: Colin Walters <walters@debian.org>
+;; Maintainer: Jay Belanger <belanger@truman.edu>
;; This file is part of GNU Emacs.
;;; Code:
;; This file is autoloaded from calc-ext.el.
-(require 'calc-ext)
+(require 'calc-ext)
(require 'calc-macs)
-(defun calc-Need-calc-sel () nil)
-
-
;;; Selection commands.
(defvar calc-keep-selection t)
+(defvar calc-selection-cache-entry nil)
+(defvar calc-selection-cache-num)
+(defvar calc-selection-cache-comp)
+(defvar calc-selection-cache-offset)
+(defvar calc-selection-true-num)
+
(defun calc-select-here (num &optional once keep)
(interactive "P")
(calc-wrapper
(if once (progn
(setq calc-keep-selection nil)
(message "(Selection will apply to next command only)")))
- (calc-change-current-selection
+ (calc-change-current-selection
(if found
(if (and num (> (setq num (prefix-numeric-value num)) 0))
(progn
(calc-prepare-selection)
(let ((found (calc-find-selected-part))
(entry calc-selection-cache-entry))
- (calc-change-current-selection
+ (calc-change-current-selection
(and found
(let ((sel (nth 2 entry))
old index op)
(calc-change-current-selection sel)
(error "%d is not a valid sub-formula index" num)))))
-(defun calc-find-nth-part (expr num)
+;; The variables calc-fnp-op and calc-fnp-num are local to
+;; calc-find-nth-part (and calc-select-previous) but used by
+;; calc-find-nth-part-rec, which is called by them.
+(defvar calc-fnp-op)
+(defvar calc-fnp-num)
+
+(defun calc-find-nth-part (expr calc-fnp-num)
(if (and calc-assoc-selections
(assq (car-safe expr) calc-assoc-ops))
- (let (op)
+ (let (calc-fnp-op)
(calc-find-nth-part-rec expr))
(if (eq (car-safe expr) 'intv)
- (and (>= num 1) (<= num 2) (nth (1+ num) expr))
- (and (not (Math-primp expr)) (>= num 1) (< num (length expr))
- (nth num expr)))))
+ (and (>= calc-fnp-num 1) (<= calc-fnp-num 2) (nth (1+ calc-fnp-num) expr))
+ (and (not (Math-primp expr)) (>= calc-fnp-num 1) (< calc-fnp-num (length expr))
+ (nth calc-fnp-num expr)))))
(defun calc-find-nth-part-rec (expr) ; uses num, op
- (or (if (and (setq op (assq (car-safe (nth 1 expr)) calc-assoc-ops))
- (memq (car expr) (nth 1 op)))
+ (or (if (and (setq calc-fnp-op (assq (car-safe (nth 1 expr)) calc-assoc-ops))
+ (memq (car expr) (nth 1 calc-fnp-op)))
(calc-find-nth-part-rec (nth 1 expr))
- (and (= (setq num (1- num)) 0)
+ (and (= (setq calc-fnp-num (1- calc-fnp-num)) 0)
(nth 1 expr)))
- (if (and (setq op (assq (car-safe (nth 2 expr)) calc-assoc-ops))
- (memq (car expr) (nth 2 op)))
+ (if (and (setq calc-fnp-op (assq (car-safe (nth 2 expr)) calc-assoc-ops))
+ (memq (car expr) (nth 2 calc-fnp-op)))
(calc-find-nth-part-rec (nth 2 expr))
- (and (= (setq num (1- num)) 0)
+ (and (= (setq calc-fnp-num (1- calc-fnp-num)) 0)
(nth 2 expr)))))
(defun calc-select-next (num)
(calc-change-current-selection (car entry))
(let ((len (if (and calc-assoc-selections
(assq (car (car entry)) calc-assoc-ops))
- (let (op (num 0))
+ (let (calc-fnp-op (calc-fnp-num 0))
(calc-find-nth-part-rec (car entry))
- (- 1 num))
+ (- 1 calc-fnp-num))
(length (car entry)))))
(calc-select-part (- len num)))))))))
"Displaying only selected part of formulas"
"Displaying all but selected part of formulas"))))
+;; The variables calc-final-point-line and calc-final-point-column
+;; are declared in calc.el, and are used throughout.
+(defvar calc-final-point-line)
+(defvar calc-final-point-column)
+
(defun calc-preserve-point ()
(or (looking-at "\\.\n+\\'")
(progn
"Selection treats a+b+c as a sum of three terms"
"Selection treats a+b+c as (a+b)+c"))))
-(defvar calc-selection-cache-entry nil)
(defun calc-prepare-selection (&optional num)
(or num (setq num (calc-locate-cursor-element (point))))
(setq calc-selection-true-num num
(setcar x (list 'cplx (car x) 0))
(calc-encase-atoms-rec (car x)))))))
+;; The variable math-comp-sel-tag is local to calc-find-selected-part,
+;; but is used by math-comp-sel-flat-term and math-comp-add-string-sel
+;; in calccomp.el, which are called (indirectly) by calc-find-selected-part.
+
(defun calc-find-selected-part ()
(let* ((math-comp-sel-hpos (- (current-column) calc-selection-cache-offset))
toppt
(setq top (cdr top)))
sel))))
-(defun calc-replace-sub-formula (expr old new)
- (setq new (calc-encase-atoms new))
+;; The variables calc-rsf-old and calc-rsf-new are local to
+;; calc-replace-sub-formula, but used by calc-replace-sub-formula-rec,
+;; which is called by calc-replace-sub-formula.
+(defvar calc-rsf-old)
+(defvar calc-rsf-new)
+
+(defun calc-replace-sub-formula (expr calc-rsf-old calc-rsf-new)
+ (setq calc-rsf-new (calc-encase-atoms calc-rsf-new))
(calc-replace-sub-formula-rec expr))
(defun calc-replace-sub-formula-rec (expr)
- (cond ((eq expr old) new)
+ (cond ((eq expr calc-rsf-old) calc-rsf-new)
((Math-primp expr) expr)
(t
(cons (car expr)
(mapcar 'calc-replace-sub-formula-rec (cdr expr))))))
(defun calc-sel-error ()
- (error "Illegal operation on sub-formulas"))
+ (error "Invalid operation on sub-formulas"))
(defun calc-replace-selections (n vals m)
(if (calc-top-selected n m)
(calc-top-list m (- n m -1) 'sel))))
(calc-pop-push-list n vals 1 sels)))
+;; The variable calc-sel-reselect is local to several functions
+;; which call calc-auto-selection.
+(defvar calc-sel-reselect)
+
(defun calc-auto-selection (entry)
(or (nth 2 entry)
(progn
- (and (boundp 'reselect) (setq reselect nil))
+ (setq calc-sel-reselect nil)
(calc-prepare-selection)
(calc-grow-assoc-formula (car entry) (calc-find-selected-part)))))
(calc-wrapper
(calc-preserve-point)
(let* ((num (max 1 (calc-locate-cursor-element (point))))
- (reselect calc-keep-selection)
+ (calc-sel-reselect calc-keep-selection)
(entry (calc-top num 'entry))
(expr (car entry))
(sel (or (calc-auto-selection entry) expr))
(list (calc-replace-sub-formula
expr sel alg))
num
- (list (and reselect alg))))))
+ (list (and calc-sel-reselect alg))))))
(calc-handle-whys))))
(defun calc-edit-selection ()
(calc-wrapper
(calc-preserve-point)
(let* ((num (max 1 (calc-locate-cursor-element (point))))
- (reselect calc-keep-selection)
+ (calc-sel-reselect calc-keep-selection)
(entry (calc-top num 'entry))
(expr (car entry))
(sel (or (calc-auto-selection entry) expr))
(let ((str (math-showing-full-precision
(math-format-nice-expr sel (frame-width)))))
(calc-edit-mode (list 'calc-finish-selection-edit
- num (list 'quote sel) reselect))
+ num (list 'quote sel) calc-sel-reselect))
(insert str "\n"))))
(calc-show-edit-buffer))
+(defvar calc-original-buffer)
+
+;; The variable calc-edit-disp-trail is local to calc-edit-finish,
+;; in calc-yank.el.
+(defvar calc-edit-disp-trail)
+(defvar calc-edit-top)
+
(defun calc-finish-selection-edit (num sel reselect)
(let ((buf (current-buffer))
- (str (buffer-substring (point) (point-max)))
+ (str (buffer-substring calc-edit-top (point-max)))
(start (point)))
(switch-to-buffer calc-original-buffer)
(let ((val (math-read-expr str)))
(error (nth 2 val))))
(calc-wrapper
(calc-preserve-point)
- (if disp-trail
+ (if calc-edit-disp-trail
(calc-trail-display 1 t))
(setq val (calc-encase-atoms (calc-normalize val)))
(let ((expr (calc-top num 'full)))
(calc-slow-wrapper
(calc-preserve-point)
(let* ((num (max 1 (calc-locate-cursor-element (point))))
- (reselect calc-keep-selection)
+ (calc-sel-reselect calc-keep-selection)
(entry (calc-top num 'entry))
(sel (or (calc-auto-selection entry) (car entry))))
(calc-with-default-simplification
(list (calc-replace-sub-formula
(car entry) sel val))
num
- (list (and reselect val))))))
+ (list (and calc-sel-reselect val))))))
(calc-handle-whys))))
(defun calc-sel-expand-formula (arg)
(calc-slow-wrapper
(calc-preserve-point)
(let* ((num (max 1 (calc-locate-cursor-element (point))))
- (reselect calc-keep-selection)
+ (calc-sel-reselect calc-keep-selection)
(entry (calc-top num 'entry))
(sel (or (calc-auto-selection entry) (car entry))))
(calc-with-default-simplification
(list (calc-replace-sub-formula
(car entry) sel val))
num
- (list (and reselect val))))))
+ (list (and calc-sel-reselect val))))))
(calc-handle-whys))))
(defun calc-sel-mult-both-sides (no-simp &optional divide)
(calc-wrapper
(calc-preserve-point)
(let* ((num (max 1 (calc-locate-cursor-element (point))))
- (reselect calc-keep-selection)
+ (calc-sel-reselect calc-keep-selection)
(entry (calc-top num 'entry))
(expr (car entry))
(sel (or (calc-auto-selection entry) expr))
(list (calc-replace-sub-formula
expr sel alg))
num
- (list (and reselect alg)))))
+ (list (and calc-sel-reselect alg)))))
(calc-handle-whys))))
(defun calc-sel-div-both-sides (no-simp)
(calc-wrapper
(calc-preserve-point)
(let* ((num (max 1 (calc-locate-cursor-element (point))))
- (reselect calc-keep-selection)
+ (calc-sel-reselect calc-keep-selection)
(entry (calc-top num 'entry))
(expr (car entry))
(sel (or (calc-auto-selection entry) expr))
(list (calc-replace-sub-formula
expr sel alg))
num
- (list (and reselect alg)))))
+ (list (and calc-sel-reselect alg)))))
(calc-handle-whys))))
(defun calc-sel-sub-both-sides (no-simp)
(interactive "P")
(calc-sel-add-both-sides no-simp t))
+(provide 'calc-sel)
+
+;;; arch-tag: e5169792-777d-428f-bff5-acca66813fa2
;;; calc-sel.el ends here