Mercurial > hg > xemacs-beta
view src/console-tty.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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line source
/* Define TTY specific console, device, and frame object for XEmacs. Copyright (C) 1995 Board of Trustees, University of Illinois. Copyright (C) 1996, 2002 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. */ /* Written by Chuck Thompson and Ben Wing. */ /* NOTE: Currently each TTY console can have only one device. Therefore, all stuff for both input and output is lumped into the console structure. If it ever becomes meaningful to have more than one device on a TTY console, the output stuff will have to get separated out. */ #ifndef INCLUDED_console_tty_h_ #define INCLUDED_console_tty_h_ #include "console.h" #include "systty.h" extern FILE *termscript; EXFUN (Fconsole_tty_controlling_process, 1); /****************** Prototypes from cm.c *******************/ /* #### Verify that all of these are still needed. */ void cm_cost_init (struct console *c); void cmputc (int c); void cmgoto (struct frame *f, int row, int col); extern struct console *cmputc_console; void send_string_to_tty_console (struct console *c, unsigned char *str, int len); /*************** Prototypes from console-tty.c ****************/ extern const struct sized_memory_description tty_console_data_description; /*************** Prototypes from fontcolor-tty.c ****************/ extern const struct sized_memory_description tty_color_instance_data_description; extern const struct sized_memory_description tty_font_instance_data_description; /*************** Prototypes from redisplay-tty.c ****************/ enum term_init_status { TTY_UNABLE_OPEN_DATABASE, TTY_TYPE_UNDEFINED, TTY_TYPE_INSUFFICIENT, TTY_SIZE_UNSPECIFIED, TTY_INIT_SUCCESS }; int init_tty_for_redisplay (struct device *d, char *terminal_type); /* #### These should probably be methods. */ void set_tty_modes (struct console *c); void reset_tty_modes (struct console *c); /* Used in sysdep.c to properly clear and position the cursor when exiting. */ void tty_redisplay_shutdown (struct console *c); /* called from console-stream.c */ Lisp_Object tty_semi_canonicalize_console_connection (Lisp_Object connection, Error_Behavior errb); Lisp_Object tty_canonicalize_console_connection (Lisp_Object connection, Error_Behavior errb); Lisp_Object tty_semi_canonicalize_device_connection (Lisp_Object connection, Error_Behavior errb); Lisp_Object tty_canonicalize_device_connection (Lisp_Object connection, Error_Behavior errb); #endif /* INCLUDED_console_tty_h_ */