Mercurial > hg > xemacs-beta
view src/glyphs-x.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 |
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/* X-specific glyphs and related. Copyright (C) 1993, 1994 Free Software Foundation, Inc. Copyright (C) 1995 Board of Trustees, University of Illinois. Copyright (C) 1995, 1996 Ben Wing Copyright (C) 1995 Sun Microsystems, Inc. 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/>. */ /* Synched up with: Not in FSF. */ #ifndef INCLUDED_glyphs_x_h_ #define INCLUDED_glyphs_x_h_ #include "glyphs.h" #ifdef HAVE_X_WINDOWS #include "xintrinsic.h" #include "../lwlib/lwlib.h" #include "../lwlib/lwlib-utils.h" /**************************************************************************** * Image-Instance Object * ****************************************************************************/ struct x_image_instance_data { Pixmap* pixmaps; Cursor cursor; /* If depth>0, then that means that other colors were allocated when this pixmap was loaded. These are they; we need to free them when finalizing the image instance. */ Colormap colormap; unsigned long *pixels; int npixels; /* Should we hang on to the extra info from the XpmAttributes, like the textual color table and the comments? Is that useful? */ }; #define X_IMAGE_INSTANCE_DATA(i) ((struct x_image_instance_data *) (i)->data) #define IMAGE_INSTANCE_X_PIXMAP(i) (X_IMAGE_INSTANCE_DATA (i)->pixmaps[0]) #define IMAGE_INSTANCE_X_PIXMAP_SLICE(i,slice) \ (X_IMAGE_INSTANCE_DATA (i)->pixmaps[slice]) #define IMAGE_INSTANCE_X_PIXMAP_SLICES(i) \ (X_IMAGE_INSTANCE_DATA (i)->pixmaps) #define IMAGE_INSTANCE_X_MASK(i) \ (Pixmap)(IMAGE_INSTANCE_PIXMAP_MASK (i)) #define IMAGE_INSTANCE_X_CURSOR(i) (X_IMAGE_INSTANCE_DATA (i)->cursor) #define IMAGE_INSTANCE_X_COLORMAP(i) (X_IMAGE_INSTANCE_DATA (i)->colormap) #define IMAGE_INSTANCE_X_PIXELS(i) (X_IMAGE_INSTANCE_DATA (i)->pixels) #define IMAGE_INSTANCE_X_NPIXELS(i) (X_IMAGE_INSTANCE_DATA (i)->npixels) #define XIMAGE_INSTANCE_X_PIXMAP(i) \ IMAGE_INSTANCE_X_PIXMAP (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_PIXMAP_SLICES(i) \ IMAGE_INSTANCE_X_PIXMAP_SLICES (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_PIXMAP_SLICE(i) \ IMAGE_INSTANCE_X_PIXMAP_SLICE (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_MASK(i) \ IMAGE_INSTANCE_X_MASK (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_CURSOR(i) \ IMAGE_INSTANCE_X_CURSOR (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_PIXELS(i) \ IMAGE_INSTANCE_X_PIXELS (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_NPIXELS(i) \ IMAGE_INSTANCE_X_NPIXELS (XIMAGE_INSTANCE (i)) /**************************************************************************** * Subwindow Object * ****************************************************************************/ struct x_subwindow_data { union { struct { Display *display; Window parent_window; Window clip_window; } sub; struct { Widget clip_window; Position x_offset; Position y_offset; LWLIB_ID id; } wid; } data; }; #define X_SUBWINDOW_INSTANCE_DATA(i) ((struct x_subwindow_data *) (i)->data) #define IMAGE_INSTANCE_X_SUBWINDOW_DISPLAY(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.sub.display) #define IMAGE_INSTANCE_X_SUBWINDOW_PARENT(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.sub.parent_window) #define IMAGE_INSTANCE_X_CLIPWINDOW(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.sub.clip_window) #define IMAGE_INSTANCE_X_WIDGET_XOFFSET(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.wid.x_offset) #define IMAGE_INSTANCE_X_WIDGET_YOFFSET(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.wid.y_offset) #define IMAGE_INSTANCE_X_WIDGET_LWID(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.wid.id) #define IMAGE_INSTANCE_X_CLIPWIDGET(i) \ (X_SUBWINDOW_INSTANCE_DATA (i)->data.wid.clip_window) #define IMAGE_INSTANCE_X_SUBWINDOW_ID(i) \ (* (Window *) & IMAGE_INSTANCE_SUBWINDOW_ID (i)) #define IMAGE_INSTANCE_X_WIDGET_ID(i) \ (* (Widget *) & IMAGE_INSTANCE_SUBWINDOW_ID (i)) #define XIMAGE_INSTANCE_X_SUBWINDOW_PARENT(i) \ IMAGE_INSTANCE_X_SUBWINDOW_PARENT (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_SUBWINDOW_DISPLAY(i) \ IMAGE_INSTANCE_X_SUBWINDOW_DISPLAY (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_WIDGET_XOFFSET(i) \ IMAGE_INSTANCE_X_WIDGET_XOFFSET (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_WIDGET_YOFFSET(i) \ IMAGE_INSTANCE_X_WIDGET_YOFFSET (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_WIDGET_LWID(i) \ IMAGE_INSTANCE_X_WIDGET_LWID (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_CLIPWIDGET(i) \ IMAGE_INSTANCE_X_CLIPWIDGET (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_CLIPWINDOW(i) \ IMAGE_INSTANCE_X_CLIPWINDOW (XIMAGE_INSTANCE (i)) #define XIMAGE_INSTANCE_X_WIDGET_ID(i) \ IMAGE_INSTANCE_X_WIDGET_ID (XIMAGE_INSTANCE (i)) #define DOMAIN_X_WIDGET(domain) \ ((IMAGE_INSTANCEP (domain) && \ X_SUBWINDOW_INSTANCE_DATA (XIMAGE_INSTANCE (domain))) ? \ XIMAGE_INSTANCE_X_WIDGET_ID (domain) : \ FRAME_X_CONTAINER_WIDGET (f) (DOMAIN_XFRAME (domain))) #endif /* HAVE_X_WINDOWS */ #endif /* INCLUDED_glyphs_x_h_ */