| Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
| 2 | Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The |
| 3 | Netherlands. |
| 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
| Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* List object interface */ |
| 26 | |
| 27 | /* |
| 28 | 123456789-123456789-123456789-123456789-123456789-123456789-123456789-12 |
| 29 | |
| 30 | Another generally useful object type is an list of object pointers. |
| 31 | This is a mutable type: the list items can be changed, and items can be |
| 32 | added or removed. Out-of-range indices or non-list objects are ignored. |
| 33 | |
| 34 | *** WARNING *** setlistitem does not increment the new item's reference |
| 35 | count, but does decrement the reference count of the item it replaces, |
| 36 | if not nil. It does *decrement* the reference count if it is *not* |
| 37 | inserted in the list. Similarly, getlistitem does not increment the |
| 38 | returned item's reference count. |
| 39 | */ |
| 40 | |
| Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 41 | typedef struct { |
| 42 | OB_VARHEAD |
| 43 | object **ob_item; |
| 44 | } listobject; |
| 45 | |
| Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 46 | extern typeobject Listtype; |
| 47 | |
| 48 | #define is_listobject(op) ((op)->ob_type == &Listtype) |
| 49 | |
| 50 | extern object *newlistobject PROTO((int size)); |
| 51 | extern int getlistsize PROTO((object *)); |
| 52 | extern object *getlistitem PROTO((object *, int)); |
| 53 | extern int setlistitem PROTO((object *, int, object *)); |
| 54 | extern int inslistitem PROTO((object *, int, object *)); |
| 55 | extern int addlistitem PROTO((object *, object *)); |
| Guido van Rossum | 14da580 | 1990-10-30 13:32:39 +0000 | [diff] [blame] | 56 | extern int sortlist PROTO((object *)); |
| Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 57 | |
| 58 | /* Macro, trading safety for speed */ |
| 59 | #define GETLISTITEM(op, i) ((op)->ob_item[i]) |