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1 | ;;; installed-scm-file |
2 | ||
3 | ;;;; Copyright (C) 1996 Free Software Foundation, Inc. | |
4 | ;;;; | |
5 | ;;;; This program is free software; you can redistribute it and/or modify | |
6 | ;;;; it under the terms of the GNU General Public License as published by | |
7 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
8 | ;;;; any later version. | |
9 | ;;;; | |
10 | ;;;; This program is distributed in the hope that it will be useful, | |
11 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | ;;;; GNU General Public License for more details. | |
14 | ;;;; | |
15 | ;;;; You should have received a copy of the GNU General Public License | |
16 | ;;;; along with this software; see the file COPYING. If not, write to | |
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17 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
18 | ;;;; Boston, MA 02111-1307 USA | |
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19 | ;;;; |
20 | ||
21 | \f | |
22 | ||
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23 | (define-module (ice-9 mapping) |
24 | :use-module (ice-9 poe)) | |
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25 | |
26 | (define-public mapping-hooks-type (make-record-type 'mapping-hooks '(get-handle | |
27 | create-handle | |
28 | remove))) | |
29 | ||
30 | ||
31 | (define-public make-mapping-hooks (perfect-funcq 17 (record-constructor mapping-hooks-type))) | |
32 | (define-public mapping-hooks? (record-predicate mapping-hooks-type)) | |
33 | (define-public mapping-hooks-get-handle (record-accessor mapping-hooks-type 'get-handle)) | |
34 | (define-public mapping-hooks-create-handle (record-accessor mapping-hooks-type 'create-handle)) | |
35 | (define-public mapping-hooks-remove (record-accessor mapping-hooks-type 'remove)) | |
36 | ||
37 | (define-public mapping-type (make-record-type 'mapping '(hooks data))) | |
38 | (define-public make-mapping (record-constructor mapping-type)) | |
39 | (define-public mapping? (record-predicate mapping-type)) | |
40 | (define-public mapping-hooks (record-accessor mapping-type 'hooks)) | |
41 | (define-public mapping-data (record-accessor mapping-type 'data)) | |
42 | (define-public set-mapping-hooks! (record-modifier mapping-type 'hooks)) | |
43 | (define-public set-mapping-data! (record-modifier mapping-type 'data)) | |
44 | ||
45 | (define-public (mapping-get-handle map key) | |
46 | ((mapping-hooks-get-handle (mapping-hooks map)) map key)) | |
47 | (define-public (mapping-create-handle! map key . opts) | |
48 | (apply (mapping-hooks-create-handle (mapping-hooks map)) map key opts)) | |
49 | (define-public (mapping-remove! map key) | |
50 | ((mapping-hooks-remove (mapping-hooks map)) map key)) | |
51 | ||
52 | (define-public (mapping-ref map key . dflt) | |
53 | (cond | |
54 | ((mapping-get-handle map key) => cdr) | |
55 | (dflt => car) | |
56 | (else #f))) | |
57 | ||
58 | (define-public (mapping-set! map key val) | |
59 | (set-cdr! (mapping-create-handle! map key #f) val)) | |
60 | ||
61 | \f | |
62 | ||
63 | (define-public hash-table-mapping-hooks | |
64 | (let ((wrap (lambda (proc) (lambda (1st . rest) (apply proc (mapping-data 1st) rest))))) | |
65 | ||
66 | (perfect-funcq 17 | |
67 | (lambda (hash-proc assoc-proc delete-proc) | |
68 | (let ((procs (list hash-proc assoc-proc delete-proc))) | |
69 | (cond | |
70 | ((equal? procs `(,hashq ,assq ,delq!)) | |
71 | (make-mapping-hooks (wrap hashq-get-handle) | |
72 | (wrap hashq-create-handle!) | |
73 | (wrap hashq-remove!))) | |
74 | ((equal? procs `(,hashv ,assv ,delv!)) | |
75 | (make-mapping-hooks (wrap hashv-get-handle) | |
76 | (wrap hashv-create-handle!) | |
77 | (wrap hashv-remove!))) | |
78 | ((equal? procs `(,hash ,assoc ,delete!)) | |
79 | (make-mapping-hooks (wrap hash-get-handle) | |
80 | (wrap hash-create-handle!) | |
81 | (wrap hash-remove!))) | |
82 | (else | |
83 | (make-mapping-hooks (wrap | |
84 | (lambda (table key) | |
85 | (hashx-get-handle hash-proc assoc-proc table key))) | |
86 | (wrap | |
87 | (lambda (table key) | |
88 | (hashx-create-handle hash-proc assoc-proc table key))) | |
89 | (wrap | |
90 | (lambda (table key) | |
91 | (hashx-get-handle hash-proc assoc-proc delete-proc table key))))))))))) | |
92 | ||
93 | (define-public (make-hash-table-mapping table hash-proc assoc-proc delete-proc) | |
94 | (make-mapping (hash-table-mapping-hooks hash-proc assoc-proc delete-proc) table)) | |
95 | ||
96 | (define-public (hash-table-mapping . options) | |
97 | (let* ((size (or (and options (number? (car options)) (car options)) | |
98 | 71)) | |
99 | (hash-proc (or (kw-arg-ref options :hash-proc) hash)) | |
100 | (assoc-proc (or (kw-arg-ref options :assoc-proc) | |
101 | (cond | |
102 | ((eq? hash-proc hash) assoc) | |
103 | ((eq? hash-proc hashv) assv) | |
104 | ((eq? hash-proc hashq) assq) | |
105 | (else (error 'hash-table-mapping | |
106 | "Hash-procedure specified with no known assoc function." | |
107 | hash-proc))))) | |
108 | (delete-proc (or (kw-arg-ref options :delete-proc) | |
109 | (cond | |
110 | ((eq? hash-proc hash) delete!) | |
111 | ((eq? hash-proc hashv) delv!) | |
112 | ((eq? hash-proc hashq) delq!) | |
113 | (else (error 'hash-table-mapping | |
114 | "Hash-procedure specified with no known delete function." | |
115 | hash-proc))))) | |
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116 | (table-constructor (or (kw-arg-ref options :table-constructor) |
117 | (lambda (len) (make-vector len '()))))) | |
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118 | (make-hash-table-mapping (table-constructor size) |
119 | hash-proc | |
120 | assoc-proc | |
121 | delete-proc))) | |
122 |