view modules/zlib/zlib.c @ 4686:cdabd56ce1b5

Fix various small issues with the multiple-value implementation. lisp/ChangeLog addition: 2009-08-31 Aidan Kehoe <kehoea@parhasard.net> * byte-optimize.el (byte-optimize-form-code-walker): Be careful about discarding multiple values when optimising #'prog1 calls. (byte-optimize-or): Preserve any trailing nil, as this is a supported way to explicitly discard multiple values. (byte-optimize-cond-1): Discard multiple values with a singleton followed by no more clauses. * bytecomp.el (progn): (prog1): (prog2): Be careful about discarding multiple values in the byte-hunk handler of these three forms. * bytecomp.el (byte-compile-prog1, byte-compile-prog2): Don't call #'values explicitly, use `(or ,(pop form) nil) instead, since that compiles to bytecode, not a funcall. * bytecomp.el (byte-compile-values): With one non-const argument, byte-compile to `(or ,(second form) nil), not an explicit #'values call. * bytecomp.el (byte-compile-insert-header): Be nicer in the error message to emacs versions that don't understand our bytecode. src/ChangeLog addition: 2009-08-31 Aidan Kehoe <kehoea@parhasard.net> * eval.c (For, Fand): Don't declare val as REGISTER in these functions, for some reason it breaks the non-DEBUG union build. These functions are only called from interpreted code, the performance implication doesn't matter. Thank you Robert Delius Royar! * eval.c (Fmultiple_value_list_internal): Error on too many arguments. tests/ChangeLog addition: 2009-08-31 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el (Assert-rounding): Remove an overly-verbose failure message here. Correct a couple of tests which were buggy in themselves. Add three new tests, checking the behaviour of #'or and #'and when passed zero arguments, and a Known-Bug-Expect-Failure call involving letf and values. (The bug predates the C-level multiple-value implementation.)
author Aidan Kehoe <kehoea@parhasard.net>
date Sun, 06 Sep 2009 19:36:02 +0100
parents 3ecd8885ac67
children 308d34e9f07d
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line source

/* zlib interface for XEmacs.
   Copyright (C) 1998 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 2, 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; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

/* Author: William Perry <wmperry@aventail.com> */

#include <emodules.h>

DEFUN ("compress", Fcompress, 1, 6, 0, /*
Return the compressed version of an object.
OBJECT is either a string or a buffer.
Optional argument LEVEL specifies how much to compress - valid range is 0 - 9.
Optional arguments START and END denote buffer positions for compressing
a portion of OBJECT.  The optional CODING argument specifies the coding
system the text is to be represented in while computing the digest.  This only
has meaning with MULE, and defaults to the current format of the data.
If ERROR-ME-NOT is nil, report an error if the coding system can't be
determined.  Else assume binary coding if all else fails.
*/
       (object, level, start, end, coding, error_me_not))
{
	return(Qnil);
}

DEFUN ("decompress", Fdecompress, 1, 5, 0, /*
Uncompress an object.
OBJECT is either a string or a buffer.
Optional arguments START and END denote buffer positions for decompressing
a portion of OBJECT.  The optional CODING argument specifies the coding
system the text is to be represented in while computing the digest.  This only
has meaning with MULE, and defaults to the current format of the data.
If ERROR-ME-NOT is nil, report an error if the coding system can't be
determined.  Else assume binary coding if all else fails.
*/
       (object, start, end, coding, error_me_not))
{
	return(Qnil);
}

void
syms_of_zlib (void)
{
  DEFSUBR(Fcompress);
  DEFSUBR(Fdecompress);
}

void
vars_of_zlib (void)
{
  Fprovide (intern ("zlib"));
}