| 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 |
| 17 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| 18 | ;;;; Boston, MA 02111-1307 USA |
| 19 | ;;;; |
| 20 | |
| 21 | \f |
| 22 | |
| 23 | (define-module (ice-9 mapping) |
| 24 | :use-module (ice-9 poe)) |
| 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))))) |
| 116 | (table-constructor (or (kw-arg-ref options :table-constructor) |
| 117 | (lambda (len) (make-vector len '()))))) |
| 118 | (make-hash-table-mapping (table-constructor size) |
| 119 | hash-proc |
| 120 | assoc-proc |
| 121 | delete-proc))) |
| 122 | |