Mercurial > hg > xemacs-beta
view tests/glyph-test.el @ 5566:4654c01af32b
Improve the implementation, documentation of #'labels, #'flet.
lisp/ChangeLog addition:
2011-09-07 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el:
* bytecomp.el (for-effect): Move this earlier in the file, it's
referenced in byte-compile-initial-macro-environment.
* bytecomp.el (byte-compile-initial-macro-environment):
In the byte-compile-macro-environment definition for #'labels, put
off the compiling the lambda bodies until the point where the rest
of the form is being compiled, allowing the lambda bodies to
access appropriate values for byte-compile-bound-variables, and
reducing excessive warning about free variables.
Add a byte-compile-macro-environment definition for #'flet. This
modifies byte-compile-function-environment appropriately, and
warns about bindings of functions that have macro definitions in
the current environment, about functions that have byte codes, and
about functions that have byte-compile methods (which may not do
what the user wants at runtime).
* bytecomp.el (byte-compile-funcall):
If FUNCTION is constant, call #'byte-compile-callargs-warn if
that's appropriate, giving warnings about problems with calling
functions bound with #'labels.
* cl-macs.el:
* cl-macs.el (flet):
Mention the main difference from Common Lisp, that the bindings
are dynamic, not lexical. Counsel the use of #'labels, not #'flet,
for this and other reasons. Explain the limited single use case for
#'flet. Cross-reference to bytecomp.el in a comment.
* cl-macs.el (labels):
Go into detail on which functions may be called from
where. Explain how to access the function definition of a label
within FORM. Add a comment cross-referencing to bytecomp.el.
man/ChangeLog addition:
2011-09-07 Aidan Kehoe <kehoea@parhasard.net>
* cl.texi (Function Bindings):
Move #'labels first, describe it in more detail, explaining that
it is to be preferred over #'flet, and explaining why.
Explain that dynamic bindings with #'flet will also not work when
functions are accessed through their bytecodes.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Wed, 07 Sep 2011 16:26:45 +0100 |
parents | 308d34e9f07d |
children |
line wrap: on
line source
;;; Copyright (C) 1998 Andy Piper ;; This file is part of XEmacs. ;; ;; XEmacs 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. ;; ;; XEmacs 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 XEmacs. If not, see <http://www.gnu.org/licenses/>. (set-extent-begin-glyph (make-extent (point) (point)) (setq im (make-glyph [xbm :file "xemacsicon.xbm"]))) (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph [string :data "xemacs"])) (defun foo () (interactive) (setq ok-select (not ok-select))) (defun fee () (interactive) (message "hello")) ;; button in a group (setq ok-select nil) (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq radio-button1 [button :face widget :descriptor ["ok1" (setq ok-select t) :style radio :selected ok-select]]))) ;; button in a group (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq radio-button2 [button :descriptor ["ok2" (setq ok-select nil) :style radio :selected (not ok-select)]]))) ;; toggle button (set-extent-begin-glyph (make-extent (point) (point)) (setq tbutton (make-glyph [button :descriptor ["ok3" (setq ok-select nil) :style toggle :selected (not ok-select)]]))) (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq toggle-button [button :descriptor ["ok4" :style toggle :callback (setq ok-select (not ok-select)) :selected ok-select]]))) ;; normal pushbutton (set-extent-begin-glyph (make-extent (point) (point)) (setq push-button (make-glyph [button :width 10 :height 2 :face modeline-mousable :descriptor "ok" :callback foo :selected t]))) ;; tree view (set-extent-begin-glyph (make-extent (point) (point)) (setq tree (make-glyph [tree-view :width 10 :descriptor "My Tree" :items (["One" foo] (["Two" foo] ["Four" foo] "Six") "Three")]))) ;; tab control (set-extent-begin-glyph (make-extent (point) (point)) (setq tab (make-glyph [tab-control :descriptor "My Tab" :face highlight :orientation right :items (["One" foo :selected t] ["Two" fee :selected nil] ["Three" foo :selected nil])]))) ;; progress gauge (set-extent-begin-glyph (make-extent (point) (point)) (setq pgauge (make-glyph [progress-gauge :width 10 :height 2 :value 0 :descriptor "ok"]))) ;; progress the progress ... (let ((x 0)) (while (<= x 100) (set-glyph-image pgauge `[progress-gauge :width 10 :height 2 :descriptor "ok" :value ,x]) (setq x (+ x 5)) (sit-for 0.1))) ;; progress gauge in the modeline (setq global-mode-string (cons (make-extent nil nil) (setq pg (make-glyph [progress-gauge :width 5 :pixel-height 16 :descriptor "ok"])))) ;; progress the progress ... (let ((x 0)) (while (<= x 100) (set-glyph-image pg `[progress-gauge :width 5 :pixel-height 16 :descriptor "ok" :value ,x]) (setq x (+ x 5)) (redisplay-frame) (sit-for 0.1))) (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph [button :face modeline-mousable :descriptor "ok" :callback foo :image [xpm :file "../etc/xemacs-icon.xpm"]])) ;; normal pushbutton (set-extent-begin-glyph (make-extent (point) (point)) (setq pbutton (make-glyph [button :descriptor ["A Big Button" foo ]]))) ;; edit box (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq edit-field [edit-field :pixel-width 50 :pixel-height 30 :face bold-italic :descriptor ["Hello"]]))) ;; combo box (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq combo-box [combo-box :width 10 :descriptor ["Hello"] :items ("One" "Two" "Three")]))) ;; label (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq label [label :pixel-width 150 :descriptor "Hello"]))) ;; string (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (setq str [string :data "Hello There"]))) ;; scrollbar ;(set-extent-begin-glyph ; (make-extent (point) (point)) ; (make-glyph [scrollbar :width 50 :height 20 :descriptor ["Hello"]])) ;; generic subwindow (setq sw (make-glyph [subwindow :pixel-width 50 :pixel-height 70])) (set-extent-begin-glyph (make-extent (point) (point)) sw) ;; layout (setq layout (make-glyph `[layout :descriptor "The Layout" :orientation vertical :justify left :border [string :data "Hello There Mrs"] :items ([layout :orientation horizontal :items (,radio-button1 ,radio-button2)] ,edit-field ,toggle-button ,label ,str)])) ;(set-glyph-face layout 'gui-element) (set-extent-begin-glyph (make-extent (point) (point)) layout) ;; another test layout (set-extent-begin-glyph (make-extent (point) (point)) (setq layout-2 (make-glyph `[layout :descriptor "The Layout" :orientation vertical :items ([progress-gauge :value 0 :width 10 :height 2 :descriptor "ok"])]))) (set-glyph-image layout-2 `[layout :descriptor "The Layout" :orientation vertical :items ([progress-gauge :value 4 :width 10 :height 2 :descriptor "ok"])]) (setq test-toggle-widget nil) (defun test-toggle (widget) (set-extent-begin-glyph (make-extent (point) (point)) (make-glyph (vector 'button :descriptor "ok" :style 'toggle :selected `(funcall test-toggle-value ,widget) :callback `(funcall test-toggle-action ,widget))))) (defun test-toggle-action (widget &optional event) (if widget (message "Widget is t") (message "Widget is nil"))) (defun test-toggle-value (widget) (setq widget (not widget)) (not widget))