Mercurial > hg > xemacs-beta
view src/s/sol2.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 | 1f0b15040456 |
| children |
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/* Copyright (C) 2000, 2003 Martin Buchholz 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: Completely divergent from FSF. */ #define SOLARIS2 1 /* #define POSIX -- not used in XEmacs */ /* Fix understandable GCC lossage on Solaris 2.6 */ #if defined(__GNUC__) && OS_RELEASE >= 506 && OS_RELEASE < 510 && !defined(NOT_C_CODE) /* GCC va_list munging is a little messed up */ #define __GNUC_VA_LIST #define _VA_LIST_ #define _VA_LIST va_list typedef void *__gnuc_va_list; typedef __gnuc_va_list va_list; /* Missing prototypes for functions added in Solaris 2.6 */ #include <sys/types.h> struct msghdr; struct sockaddr; extern int __xnet_bind (int, const struct sockaddr *, size_t); extern int __xnet_listen (int, int); extern int __xnet_connect (int, const struct sockaddr *, size_t); extern ssize_t __xnet_recvmsg (int, struct msghdr *, int); extern ssize_t __xnet_sendmsg (int, const struct msghdr *, int); extern ssize_t __xnet_sendto (int, const void *, size_t, int, const struct sockaddr *, size_t); extern int __xnet_socket (int, int, int); extern int __xnet_socketpair (int, int, int, int *); extern int __xnet_getsockopt (int, int, int, void *, size_t *); #endif /* GCC && >= Solaris 2.6 && C code */ #include "usg5-4-2.h" /* XEmacs change from 5-4 to 5-4-2 */ #undef PC /* Defined in x86 /usr/include/sys/reg.h */ /* SIGIO seems to be working under Solaris and it makes ^G work better... */ #undef BROKEN_SIGIO #ifdef NOT_C_CODE /* XEmacs change -- some Motif packages need -lgen to get regex and regcmp */ #undef LIBS_SYSTEM #define LIBS_SYSTEM "-lsocket -lnsl -lelf -lgen -ldl" /* SYSTEM_MALLOC must be defined if dbx/RTC is going to be used. dbx/RTC does not work with a static definition of malloc(). */ /* We want to be able to test out ralloc.c. */ /* #define SYSTEM_MALLOC */ #undef UNEXEC #define UNEXEC "unexsol2-6.o" #else /* C_CODE */ /* 2.5 now has `random' back in libc but we don't want to use it. */ #undef HAVE_RANDOM #include <sys/utsname.h> /* warning: macro redefined: SYS_NMLN */ #endif /* C_CODE */