Mercurial > hg > xemacs-beta
view src/opaque.h @ 5253:b6a398dbb403
Fewer algorithmic complexity surprises, nicer errors, mapcarX(), maplist()
src/ChangeLog addition:
2010-09-01 Aidan Kehoe <kehoea@parhasard.net>
* fns.c (list_merge, list_array_merge_into_list)
(list_array_merge_into_array):
Avoid algorithmic complexity surprises when checking for
circularity in these functions.
(Freduce): Fix some formatting, in passing.
(mapcarX): Drop the SOME_OR_EVERY argument to this function;
instead, take CALLER, a symbol reflecting the Lisp-visible
function that called mapcarX(). Use CALLER with
mapping_interaction_error() when sequences are modified
illegally. Don't cons with #'some, #'every, not even a little.
(Fmapconcat, FmapcarX, Fmapvector, Fmapcan, Fmapc, Fmap)
(Fmap_into, Fsome, Fevery): Call mapcarX() with its new
arguments.
(Fmapcan): Don't unnecessarily complicate the nconc call.
(maplist): Take CALLER, a symbol reflecting the Lisp-visible
function that called maplist(), rather than having separate
arguments to indicate mapl vs. mapcon.
Avoid algorithmic complexity surprises when checking for
circularity. In #'mapcon, check a given stretch of
result for well-formedness once, which was not previously the
case, despite what the comments said.
(Fmaplist, Fmapl, Fmapcon):
Call maplist() with its new arguments.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Wed, 01 Sep 2010 12:51:32 +0100 |
| parents | a9c41067dd88 |
| children | 308d34e9f07d |
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/* Opaque Lisp objects. Copyright (C) 1993 Sun Microsystems, Inc. Copyright (C) 1995, 1996 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 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. */ /* Written by Ben Wing, October 1993. */ #ifndef INCLUDED_opaque_h_ #define INCLUDED_opaque_h_ typedef struct Lisp_Opaque { NORMAL_LISP_OBJECT_HEADER header; Bytecount size; max_align_t data[1]; } Lisp_Opaque; DECLARE_LISP_OBJECT (opaque, Lisp_Opaque); #define XOPAQUE(x) XRECORD (x, opaque, Lisp_Opaque) #define wrap_opaque(p) wrap_record (p, opaque) #define OPAQUEP(x) RECORDP (x, opaque) /* #define CHECK_OPAQUE(x) CHECK_RECORD (x, opaque) Opaque pointers should never escape to the Lisp level, so functions should not be doing this. */ /* Alternative DATA arguments to make_opaque() */ #define OPAQUE_CLEAR ((const void *) 0) #define OPAQUE_UNINIT ((const void *) -1) #define OPAQUE_SIZE(op) ((op)->size) #define OPAQUE_DATA(op) ((void *) ((op)->data)) #define XOPAQUE_SIZE(op) OPAQUE_SIZE (XOPAQUE (op)) #define XOPAQUE_DATA(op) OPAQUE_DATA (XOPAQUE (op)) Lisp_Object make_opaque (const void *data, Bytecount size); typedef struct Lisp_Opaque_Ptr { NORMAL_LISP_OBJECT_HEADER header; void *ptr; } Lisp_Opaque_Ptr; DECLARE_LISP_OBJECT (opaque_ptr, Lisp_Opaque_Ptr); #define XOPAQUE_PTR(x) XRECORD (x, opaque_ptr, Lisp_Opaque_Ptr) #define wrap_opaque_ptr(p) wrap_record (p, opaque_ptr) #define OPAQUE_PTRP(x) RECORDP (x, opaque_ptr) EXTERN_C MODULE_API Lisp_Object make_opaque_ptr (void *val); EXTERN_C MODULE_API void free_opaque_ptr (Lisp_Object ptr); #define get_opaque_ptr(op) (XOPAQUE_PTR (op)->ptr) #define set_opaque_ptr(op, ptr_) (XOPAQUE_PTR (op)->ptr = (ptr_)) #endif /* INCLUDED_opaque_h_ */