Mercurial > hg > xemacs-beta
view src/m/mips.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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/* m- file for Mips machines. Copyright (C) 1987, 1992 Free Software Foundation, 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: FSF 19.31. */ /* The following line tells the configuration script what sort of operating system this machine is likely to run. USUAL-OPSYS="note" NOTE-START Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world. Note that the proper m- file for the Decstation is m-pmax.h. NOTE-END */ /* Now define a symbol for the cpu type, if your compiler does not define it automatically: Ones defined so far include vax, m68000, ns16000, pyramid, orion, tahoe, APOLLO and many others */ #ifndef mips # define mips #endif #ifdef ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF /* Data type of load average, as read out of kmem. */ #define LOAD_AVE_TYPE long /* Convert that into an integer that is 100 for a load average of 1.0 */ #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0) #endif /* ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF */ #ifndef linux /* CDC EP/IX 1.4.3 uses /unix */ #ifdef ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF #undef KERNEL_FILE #define KERNEL_FILE "/unix" #endif /* ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF */ #endif /* ! linux */ /* Define NO_REMAP if memory segmentation makes it not work well to change the boundary between the text section and data section when Emacs is dumped. If you define this, the preloaded Lisp code will not be sharable; but that's better than failing completely. */ #define NO_REMAP /* This machine requires completely different unexec code which lives in a separate file. Specify the file name. */ #ifndef linux #define UNEXEC "unexmips.o" #endif /* !linux */ /* Describe layout of the address space in an executing process. */ #ifdef linux #define TEXT_START 0x00400000 #define DATA_START 0x10000000 #else /* !linux */ #define TEXT_START 0x400000 #define DATA_START 0x800000 #endif /* linux */ /* Alter some of the options used when linking. */ #if !defined(linux) #ifdef BSD /* DECstations don't have this library. */ /* #define LIBS_MACHINE "-lmld" */ #define LD_SWITCH_MACHINE "-D 800000" #define LIBS_DEBUG #define LINKER "/bsd43/bin/ld" #else /* not BSD */ #undef LIBS_MACHINE #define LD_SWITCH_MACHINE "-D 800000 -g3" #define START_FILES "pre-crt0.o /usr/lib/crt1.o" #define LIB_STANDARD "-lbsd -lc /usr/lib/crtn.o" /* LIBS_TERMCAP deleted */ #define C_SWITCH_MACHINE "-I/usr/include/bsd" /* XEmacs deleted C_DEBUG_SWITCH */ #endif /* not BSD */ #endif /* !linux */ #if !defined(linux) #ifdef USG /* Don't try to use SIGIO even though it is defined. */ #define BROKEN_SIGIO /* Describe special kernel features. */ #if defined(emacs) && !defined(INHIBIT_BSD_TIME) #include <bsd/sys/time.h> #endif /* The `select' in the system won't work for pipes, so don't use it. */ #undef HAVE_SELECT /* override configuration decision */ /* ??? */ #define IRIS #endif /* USG */ #ifdef BSD #define COFF #define TERMINFO #undef MAIL_USE_FLOCK /* Someone should check this. */ #endif /* BSD */ #endif /* !linux */