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1 /* Lisp interface to hash tables -- include file.
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2 Copyright (C) 1995, 1996 Ben Wing.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23 #ifndef _XEMACS_ELHASH_H_
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24 #define _XEMACS_ELHASH_H_
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25
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26 DECLARE_LRECORD (hashtable, struct hashtable_struct);
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27
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28 #define XHASHTABLE(x) XRECORD (x, hashtable, struct hashtable_struct)
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29 #define XSETHASHTABLE(x, p) XSETRECORD (x, p, hashtable)
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30 #define HASHTABLEP(x) RECORDP (x, hashtable)
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31 #define GC_HASHTABLEP(x) GC_RECORDP (x, hashtable)
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32 #define CHECK_HASHTABLE(x) CHECK_RECORD (x, hashtable)
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33 #define CONCHECK_HASHTABLE(x) CONCHECK_RECORD (x, hashtable)
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34
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35 enum hashtable_type
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36 {
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37 HASHTABLE_NONWEAK,
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38 HASHTABLE_KEY_WEAK,
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39 HASHTABLE_VALUE_WEAK,
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40 HASHTABLE_KEY_CAR_WEAK,
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41 HASHTABLE_VALUE_CAR_WEAK,
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42 HASHTABLE_WEAK
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43 };
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44
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45 enum hashtable_test_fun
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46 {
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47 HASHTABLE_EQ,
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48 HASHTABLE_EQL,
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49 HASHTABLE_EQUAL
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50 };
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51
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52 Lisp_Object Fmake_hashtable (Lisp_Object size, Lisp_Object test_fun);
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53 Lisp_Object Fcopy_hashtable (Lisp_Object old_table);
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54 Lisp_Object Fgethash (Lisp_Object obj, Lisp_Object table,
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55 Lisp_Object defalt);
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56 Lisp_Object Fputhash (Lisp_Object obj, Lisp_Object val,
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57 Lisp_Object table);
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58 Lisp_Object Fremhash (Lisp_Object obj, Lisp_Object table);
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59 Lisp_Object Fhashtable_fullness (Lisp_Object table);
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60
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61 Lisp_Object make_lisp_hashtable (int size,
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62 enum hashtable_type type,
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63 enum hashtable_test_fun test_fun);
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64
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65 void elisp_maphash (void (*fn) (CONST void *key, void *contents,
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66 void *extra_arg),
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67 Lisp_Object table,
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68 void *extra_arg);
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69
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70 void elisp_map_remhash (int (*fn) (CONST void *key,
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71 CONST void *contents,
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72 void *extra_arg),
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73 Lisp_Object table,
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74 void *extra_arg);
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75
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76 int finish_marking_weak_hashtables (int (*obj_marked_p) (Lisp_Object),
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77 void (*markobj) (Lisp_Object));
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78 void prune_weak_hashtables (int (*obj_marked_p) (Lisp_Object));
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79
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80 char *elisp_hvector_malloc (unsigned int, Lisp_Object);
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81 void elisp_hvector_free (void *ptr, Lisp_Object table);
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82
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83 #endif /* _XEMACS_ELHASH_H_ */
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