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3132f345 CW |
1 | ;;; calcsel2.el --- selection functions for Calc |
2 | ||
acaf905b | 3 | ;; Copyright (C) 1990-1993, 2001-2012 Free Software Foundation, Inc. |
3132f345 CW |
4 | |
5 | ;; Author: David Gillespie <daveg@synaptics.com> | |
e8fff8ed | 6 | ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com> |
136211a9 EZ |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
662c9c64 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
7c671b23 | 11 | ;; it under the terms of the GNU General Public License as published by |
662c9c64 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
7c671b23 | 14 | |
136211a9 | 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
7c671b23 GM |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
662c9c64 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
136211a9 | 22 | |
3132f345 | 23 | ;;; Commentary: |
136211a9 | 24 | |
3132f345 | 25 | ;;; Code: |
136211a9 EZ |
26 | |
27 | ;; This file is autoloaded from calc-ext.el. | |
136211a9 | 28 | |
25efff5f | 29 | (require 'calc-ext) |
136211a9 EZ |
30 | (require 'calc-macs) |
31 | ||
3b058174 JB |
32 | ;; The variable calc-keep-selection is declared and set in calc-sel.el. |
33 | (defvar calc-keep-selection) | |
136211a9 | 34 | |
1d64910f JB |
35 | ;; The variable calc-sel-reselect is local to the methods below, |
36 | ;; but is used by some functions in calc-sel.el which are called | |
37 | ;; by the functions below. | |
38 | ||
136211a9 EZ |
39 | (defun calc-commute-left (arg) |
40 | (interactive "p") | |
41 | (if (< arg 0) | |
42 | (calc-commute-right (- arg)) | |
43 | (calc-wrapper | |
44 | (calc-preserve-point) | |
45 | (let ((num (max 1 (calc-locate-cursor-element (point)))) | |
1d64910f | 46 | (calc-sel-reselect calc-keep-selection)) |
136211a9 EZ |
47 | (if (= arg 0) (setq arg nil)) |
48 | (while (or (null arg) (>= (setq arg (1- arg)) 0)) | |
49 | (let* ((entry (calc-top num 'entry)) | |
50 | (expr (car entry)) | |
51 | (sel (calc-auto-selection entry)) | |
52 | parent new) | |
53 | (or (and sel | |
54 | (consp (setq parent (calc-find-assoc-parent-formula | |
55 | expr sel)))) | |
56 | (error "No term is selected")) | |
57 | (if (and calc-assoc-selections | |
58 | (assq (car parent) calc-assoc-ops)) | |
59 | (let ((outer (calc-find-parent-formula parent sel))) | |
60 | (if (eq sel (nth 2 outer)) | |
61 | (setq new (calc-replace-sub-formula | |
62 | parent outer | |
63 | (cond | |
64 | ((memq (car outer) | |
65 | (nth 1 (assq (car-safe (nth 1 outer)) | |
66 | calc-assoc-ops))) | |
67 | (let* ((other (nth 2 (nth 1 outer))) | |
68 | (new (calc-build-assoc-term | |
69 | (car (nth 1 outer)) | |
70 | (calc-build-assoc-term | |
71 | (car outer) | |
72 | (nth 1 (nth 1 outer)) | |
73 | sel) | |
74 | other))) | |
75 | (setq sel (nth 2 (nth 1 new))) | |
76 | new)) | |
77 | ((eq (car outer) '-) | |
78 | (calc-build-assoc-term | |
79 | '+ | |
80 | (setq sel (math-neg sel)) | |
81 | (nth 1 outer))) | |
82 | ((eq (car outer) '/) | |
83 | (calc-build-assoc-term | |
84 | '* | |
85 | (setq sel (calcFunc-div 1 sel)) | |
86 | (nth 1 outer))) | |
87 | (t (calc-build-assoc-term | |
88 | (car outer) sel (nth 1 outer)))))) | |
89 | (let ((next (calc-find-parent-formula parent outer))) | |
90 | (if (not (and (consp next) | |
91 | (eq outer (nth 2 next)) | |
92 | (eq (car next) (car outer)))) | |
93 | (setq new nil) | |
94 | (setq new (calc-build-assoc-term | |
95 | (car next) | |
96 | sel | |
97 | (calc-build-assoc-term | |
98 | (car next) (nth 1 next) (nth 2 outer))) | |
99 | sel (nth 1 new) | |
100 | new (calc-replace-sub-formula | |
101 | parent next new)))))) | |
102 | (if (eq (nth 1 parent) sel) | |
103 | (setq new nil) | |
104 | (let ((p (nthcdr (1- (calc-find-sub-formula parent sel)) | |
105 | (setq new (copy-sequence parent))))) | |
106 | (setcar (cdr p) (car p)) | |
107 | (setcar p sel)))) | |
108 | (if (null new) | |
109 | (if arg | |
110 | (error "Term is already leftmost") | |
1d64910f | 111 | (or calc-sel-reselect |
136211a9 EZ |
112 | (calc-pop-push-list 1 (list expr) num '(nil))) |
113 | (setq arg 0)) | |
114 | (calc-pop-push-record-list | |
115 | 1 "left" | |
116 | (list (calc-replace-sub-formula expr parent new)) | |
117 | num | |
1d64910f | 118 | (list (and (or (not (eq arg 0)) calc-sel-reselect) |
bf77c646 | 119 | sel)))))))))) |
136211a9 EZ |
120 | |
121 | (defun calc-commute-right (arg) | |
122 | (interactive "p") | |
123 | (if (< arg 0) | |
124 | (calc-commute-left (- arg)) | |
125 | (calc-wrapper | |
126 | (calc-preserve-point) | |
127 | (let ((num (max 1 (calc-locate-cursor-element (point)))) | |
1d64910f | 128 | (calc-sel-reselect calc-keep-selection)) |
136211a9 EZ |
129 | (if (= arg 0) (setq arg nil)) |
130 | (while (or (null arg) (>= (setq arg (1- arg)) 0)) | |
131 | (let* ((entry (calc-top num 'entry)) | |
132 | (expr (car entry)) | |
133 | (sel (calc-auto-selection entry)) | |
134 | parent new) | |
135 | (or (and sel | |
136 | (consp (setq parent (calc-find-assoc-parent-formula | |
137 | expr sel)))) | |
138 | (error "No term is selected")) | |
139 | (if (and calc-assoc-selections | |
140 | (assq (car parent) calc-assoc-ops)) | |
141 | (let ((outer (calc-find-parent-formula parent sel))) | |
142 | (if (eq sel (nth 1 outer)) | |
143 | (setq new (calc-replace-sub-formula | |
144 | parent outer | |
145 | (if (memq (car outer) | |
146 | (nth 2 (assq (car-safe (nth 2 outer)) | |
147 | calc-assoc-ops))) | |
148 | (let ((other (nth 1 (nth 2 outer)))) | |
149 | (calc-build-assoc-term | |
150 | (car outer) | |
151 | other | |
152 | (calc-build-assoc-term | |
153 | (car (nth 2 outer)) | |
154 | sel | |
155 | (nth 2 (nth 2 outer))))) | |
156 | (let ((new (cond | |
157 | ((eq (car outer) '-) | |
158 | (calc-build-assoc-term | |
159 | '+ | |
160 | (math-neg (nth 2 outer)) | |
161 | sel)) | |
162 | ((eq (car outer) '/) | |
163 | (calc-build-assoc-term | |
164 | '* | |
165 | (calcFunc-div 1 (nth 2 outer)) | |
166 | sel)) | |
167 | (t (calc-build-assoc-term | |
168 | (car outer) | |
169 | (nth 2 outer) | |
170 | sel))))) | |
171 | (setq sel (nth 2 new)) | |
172 | new)))) | |
173 | (let ((next (calc-find-parent-formula parent outer))) | |
174 | (if (not (and (consp next) | |
175 | (eq outer (nth 1 next)))) | |
176 | (setq new nil) | |
177 | (setq new (calc-build-assoc-term | |
178 | (car outer) | |
179 | (calc-build-assoc-term | |
180 | (car next) (nth 1 outer) (nth 2 next)) | |
181 | sel) | |
182 | sel (nth 2 new) | |
183 | new (calc-replace-sub-formula | |
184 | parent next new)))))) | |
185 | (if (eq (nth (1- (length parent)) parent) sel) | |
186 | (setq new nil) | |
187 | (let ((p (nthcdr (calc-find-sub-formula parent sel) | |
188 | (setq new (copy-sequence parent))))) | |
189 | (setcar p (nth 1 p)) | |
190 | (setcar (cdr p) sel)))) | |
191 | (if (null new) | |
192 | (if arg | |
193 | (error "Term is already rightmost") | |
1d64910f | 194 | (or calc-sel-reselect |
136211a9 EZ |
195 | (calc-pop-push-list 1 (list expr) num '(nil))) |
196 | (setq arg 0)) | |
197 | (calc-pop-push-record-list | |
198 | 1 "rght" | |
199 | (list (calc-replace-sub-formula expr parent new)) | |
200 | num | |
1d64910f | 201 | (list (and (or (not (eq arg 0)) calc-sel-reselect) |
bf77c646 | 202 | sel)))))))))) |
136211a9 EZ |
203 | |
204 | (defun calc-build-assoc-term (op lhs rhs) | |
205 | (cond ((and (eq op '+) (or (math-looks-negp rhs) | |
206 | (and (eq (car-safe rhs) 'cplx) | |
207 | (math-negp (nth 1 rhs)) | |
208 | (eq (nth 2 rhs) 0)))) | |
209 | (list '- lhs (math-neg rhs))) | |
210 | ((and (eq op '-) (or (math-looks-negp rhs) | |
211 | (and (eq (car-safe rhs) 'cplx) | |
212 | (math-negp (nth 1 rhs)) | |
213 | (eq (nth 2 rhs) 0)))) | |
214 | (list '+ lhs (math-neg rhs))) | |
215 | ((and (eq op '*) (and (eq (car-safe rhs) '/) | |
216 | (or (math-equal-int (nth 1 rhs) 1) | |
217 | (equal (nth 1 rhs) '(cplx 1 0))))) | |
218 | (list '/ lhs (nth 2 rhs))) | |
219 | ((and (eq op '/) (and (eq (car-safe rhs) '/) | |
220 | (or (math-equal-int (nth 1 rhs) 1) | |
221 | (equal (nth 1 rhs) '(cplx 1 0))))) | |
222 | (list '/ lhs (nth 2 rhs))) | |
bf77c646 | 223 | (t (list op lhs rhs)))) |
136211a9 EZ |
224 | |
225 | (defun calc-sel-unpack () | |
226 | (interactive) | |
227 | (calc-wrapper | |
228 | (calc-preserve-point) | |
229 | (let* ((num (max 1 (calc-locate-cursor-element (point)))) | |
1d64910f | 230 | (calc-sel-reselect calc-keep-selection) |
136211a9 EZ |
231 | (entry (calc-top num 'entry)) |
232 | (expr (car entry)) | |
233 | (sel (or (calc-auto-selection entry) expr))) | |
234 | (or (and (not (math-primp sel)) | |
235 | (= (length sel) 2)) | |
236 | (error "Selection must be a function of one argument")) | |
237 | (calc-pop-push-record-list 1 "unpk" | |
238 | (list (calc-replace-sub-formula | |
239 | expr sel (nth 1 sel))) | |
240 | num | |
1d64910f | 241 | (list (and calc-sel-reselect (nth 1 sel))))))) |
136211a9 EZ |
242 | |
243 | (defun calc-sel-isolate () | |
244 | (interactive) | |
245 | (calc-slow-wrapper | |
246 | (calc-preserve-point) | |
247 | (let* ((num (max 1 (calc-locate-cursor-element (point)))) | |
1d64910f | 248 | (calc-sel-reselect calc-keep-selection) |
136211a9 EZ |
249 | (entry (calc-top num 'entry)) |
250 | (expr (car entry)) | |
251 | (sel (or (calc-auto-selection entry) (error "No selection"))) | |
252 | (eqn sel) | |
253 | soln) | |
254 | (while (and (or (consp (setq eqn (calc-find-parent-formula expr eqn))) | |
255 | (error "Selection must be a member of an equation")) | |
256 | (not (assq (car eqn) calc-tweak-eqn-table)))) | |
257 | (setq soln (math-solve-eqn eqn sel calc-hyperbolic-flag)) | |
258 | (or soln | |
259 | (error "No solution found")) | |
260 | (setq soln (calc-encase-atoms | |
261 | (if (eq (not (calc-find-sub-formula (nth 2 eqn) sel)) | |
262 | (eq (nth 1 soln) sel)) | |
263 | soln | |
264 | (list (nth 1 (assq (car soln) calc-tweak-eqn-table)) | |
265 | (nth 2 soln) | |
266 | (nth 1 soln))))) | |
267 | (calc-pop-push-record-list 1 "isol" | |
268 | (list (calc-replace-sub-formula | |
269 | expr eqn soln)) | |
270 | num | |
1d64910f | 271 | (list (and calc-sel-reselect sel))) |
bf77c646 | 272 | (calc-handle-whys)))) |
136211a9 EZ |
273 | |
274 | (defun calc-sel-commute (many) | |
275 | (interactive "P") | |
276 | (let ((calc-assoc-selections nil)) | |
277 | (calc-rewrite-selection "CommuteRules" many "cmut")) | |
bf77c646 | 278 | (calc-set-mode-line)) |
136211a9 EZ |
279 | |
280 | (defun calc-sel-jump-equals (many) | |
281 | (interactive "P") | |
bf77c646 | 282 | (calc-rewrite-selection "JumpRules" many "jump")) |
136211a9 EZ |
283 | |
284 | (defun calc-sel-distribute (many) | |
285 | (interactive "P") | |
bf77c646 | 286 | (calc-rewrite-selection "DistribRules" many "dist")) |
136211a9 EZ |
287 | |
288 | (defun calc-sel-merge (many) | |
289 | (interactive "P") | |
bf77c646 | 290 | (calc-rewrite-selection "MergeRules" many "merg")) |
136211a9 EZ |
291 | |
292 | (defun calc-sel-negate (many) | |
293 | (interactive "P") | |
bf77c646 | 294 | (calc-rewrite-selection "NegateRules" many "jneg")) |
136211a9 EZ |
295 | |
296 | (defun calc-sel-invert (many) | |
297 | (interactive "P") | |
bf77c646 | 298 | (calc-rewrite-selection "InvertRules" many "jinv")) |
136211a9 | 299 | |
25efff5f JB |
300 | (provide 'calcsel2) |
301 | ||
bf77c646 | 302 | ;;; calcsel2.el ends here |