Mercurial > hg > xemacs-beta
view lwlib/xlwgaugeP.h @ 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
/* Gauge Widget for XEmacs. Copyright (C) 1999 Edward A. Falk 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/>. */ /* * GaugeP.h - Gauge widget * * Author: Edward A. Falk * falk@falconer.vip.best.com * * Date: July 9, 1997 */ #ifndef _XawGaugeP_h #define _XawGaugeP_h /*********************************************************************** * * Gauge Widget Private Data * * Gauge has little in common with the label widget, but can make use * of some label resources, so is subclassed from label. * ***********************************************************************/ #include "xlwgauge.h" #include ATHENA_LabelP_h_ /* New fields for the Gauge widget class record */ typedef struct {XtPointer extension;} GaugeClassPart; /* Full class record declaration */ typedef struct _GaugeClassRec { CoreClassPart core_class; SimpleClassPart simple_class; #ifdef _ThreeDP_h ThreeDClassPart threeD_class; #endif LabelClassPart label_class; GaugeClassPart gauge_class; } GaugeClassRec; extern GaugeClassRec gaugeClassRec; /* New fields for the Gauge widget record */ typedef struct { /* resources */ int value, v0,v1 ; int ntics, nlabels ; String *labels ; XtOrientation orientation ; Boolean autoScaleUp ; /* scales automatically */ Boolean autoScaleDown ; /* scales automatically */ int update ; /* update interval */ XtCallbackList getValue ; /* proc to call to fetch a point */ /* private state */ Dimension gmargin ; /* edges <-> gauge */ Dimension tmargin ; /* top (left) edge <-> tic marks */ Dimension lmargin ; /* tic marks <-> labels */ Dimension margin0 ; /* left/bottom margin */ Dimension margin1 ; /* right/top margin */ XtIntervalId intervalId ; Atom selected ; String selstr ; /* selection string, if any */ GC inverse_GC ; } GaugePart; /**************************************************************** * * Full instance record declaration * ****************************************************************/ typedef struct _GaugeRec { CorePart core; SimplePart simple; #ifdef _ThreeDP_h ThreeDPart threeD; #endif LabelPart label; GaugePart gauge; } GaugeRec; #endif /* _XawGaugeP_h */