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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
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/* Gtk-specific Lisp objects.
   Copyright (C) 1993, 1994 Free Software Foundation, Inc.
   Copyright (C) 1995 Board of Trustees, University of Illinois.
   Copyright (C) 1995, 1996 Ben Wing.

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. */
/* Gtk version by William Perry */

#ifndef _XEMACS_OBJECTS_GTK_IMPL_H_
#define _XEMACS_OBJECTS_GTK_IMPL_H_

#include "fontcolor-impl.h"
#include "fontcolor-gtk.h"

#ifdef HAVE_GTK

/*****************************************************************************
 Color-Instance
 ****************************************************************************/

struct gtk_color_instance_data
{
  GdkColor *color;
  char dealloc_on_gc;
};

#define GTK_COLOR_INSTANCE_DATA(c) ((struct gtk_color_instance_data *) (c)->data)
#define COLOR_INSTANCE_GTK_COLOR(c) (GTK_COLOR_INSTANCE_DATA (c)->color)
#define XCOLOR_INSTANCE_GTK_COLOR(c) COLOR_INSTANCE_GTK_COLOR (XCOLOR_INSTANCE (c))
#define COLOR_INSTANCE_GTK_DEALLOC(c) (GTK_COLOR_INSTANCE_DATA (c)->dealloc_on_gc)

/*****************************************************************************
 Font-Instance
 ****************************************************************************/

struct gtk_font_instance_data
{
  /* Gtk-specific information */
  GdkFont *font;
};

#define GTK_FONT_INSTANCE_DATA(f) ((struct gtk_font_instance_data *) (f)->data)
#define FONT_INSTANCE_GTK_FONT(f) (GTK_FONT_INSTANCE_DATA (f)->font)
#define XFONT_INSTANCE_GTK_FONT(c) FONT_INSTANCE_GTK_FONT (XFONT_INSTANCE (c))

#endif /* HAVE_GTK */
#endif /* _XEMACS_OBJECTS_GTK_IMPL_H_ */