Mercurial > hg > xemacs-beta
view src/fontcolor-tty-impl.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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/* TTY-specific Lisp objects. Copyright (C) 1995 Board of Trustees, University of Illinois. Copyright (C) 1995 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. */ #ifndef INCLUDED_fontcolor_tty_impl_h_ #define INCLUDED_fontcolor_tty_impl_h_ #include "fontcolor-impl.h" #include "fontcolor-tty.h" struct tty_color_instance_data { #ifdef NEW_GC NORMAL_LISP_OBJECT_HEADER header; #endif /* NEW_GC */ Lisp_Object symbol; /* so we don't have to constantly call Fintern() */ }; #ifdef NEW_GC DECLARE_LISP_OBJECT (tty_color_instance_data, struct tty_color_instance_data); #define XTTY_COLOR_INSTANCE_DATA(x) \ XRECORD (x, tty_color_instance_data, struct tty_color_instance_data) #define wrap_tty_color_instance_data(p) \ wrap_record (p, tty_color_instance_data) #define TTY_COLOR_INSTANCE_DATAP(x) RECORDP (x, tty_color_instance_data) #define CHECK_TTY_COLOR_INSTANCE_DATA(x) \ CHECK_RECORD (x, tty_color_instance_data) #define CONCHECK_TTY_COLOR_INSTANCE_DATA(x) \ CONCHECK_RECORD (x, tty_color_instance_data) #endif /* NEW_GC */ #define TTY_COLOR_INSTANCE_DATA(c) \ ((struct tty_color_instance_data *) (c)->data) #define COLOR_INSTANCE_TTY_SYMBOL(c) (TTY_COLOR_INSTANCE_DATA (c)->symbol) struct tty_font_instance_data { #ifdef NEW_GC NORMAL_LISP_OBJECT_HEADER header; #endif /* NEW_GC */ Lisp_Object charset; }; #ifdef NEW_GC DECLARE_LISP_OBJECT (tty_font_instance_data, struct tty_font_instance_data); #define XTTY_FONT_INSTANCE_DATA(x) \ XRECORD (x, tty_font_instance_data, struct tty_font_instance_data) #define wrap_tty_font_instance_data(p) \ wrap_record (p, tty_font_instance_data) #define TTY_FONT_INSTANCE_DATAP(x) RECORDP (x, tty_font_instance_data) #define CHECK_TTY_FONT_INSTANCE_DATA(x) \ CHECK_RECORD (x, tty_font_instance_data) #define CONCHECK_TTY_FONT_INSTANCE_DATA(x) \ CONCHECK_RECORD (x, tty_font_instance_data) #endif /* NEW_GC */ #define TTY_FONT_INSTANCE_DATA(c) \ ((struct tty_font_instance_data *) (c)->data) #define FONT_INSTANCE_TTY_CHARSET(c) (TTY_FONT_INSTANCE_DATA (c)->charset) #endif /* INCLUDED_fontcolor_tty_impl_h_ */