| 1 | ;;; installed-scm-file |
| 2 | |
| 3 | ;;;; Copyright (C) 1996, 2001, 2006 Free Software Foundation, Inc. |
| 4 | ;;;; |
| 5 | ;;;; This library is free software; you can redistribute it and/or |
| 6 | ;;;; modify it under the terms of the GNU Lesser General Public |
| 7 | ;;;; License as published by the Free Software Foundation; either |
| 8 | ;;;; version 2.1 of the License, or (at your option) any later version. |
| 9 | ;;;; |
| 10 | ;;;; This library 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 GNU |
| 13 | ;;;; Lesser General Public License for more details. |
| 14 | ;;;; |
| 15 | ;;;; You should have received a copy of the GNU Lesser General Public |
| 16 | ;;;; License along with this library; if not, write to the Free Software |
| 17 | ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | ;;;; |
| 19 | |
| 20 | \f |
| 21 | |
| 22 | (define-module (ice-9 mapping) |
| 23 | :use-module (ice-9 poe) |
| 24 | :export (mapping-hooks-type make-mapping-hooks mapping-hooks? |
| 25 | mapping-hooks-get-handle mapping-hooks-create-handle |
| 26 | mapping-hooks-remove mapping-type make-mapping mapping? |
| 27 | mapping-hooks mapping-data set-mapping-hooks! set-mapping-data! |
| 28 | mapping-get-handle mapping-create-handle! mapping-remove! |
| 29 | mapping-ref mapping-set! hash-table-mapping-hooks |
| 30 | make-hash-table-mapping hash-table-mapping)) |
| 31 | |
| 32 | (define mapping-hooks-type (make-record-type 'mapping-hooks '(get-handle |
| 33 | create-handle |
| 34 | remove))) |
| 35 | |
| 36 | |
| 37 | (define make-mapping-hooks (perfect-funcq 17 (record-constructor mapping-hooks-type))) |
| 38 | (define mapping-hooks? (record-predicate mapping-hooks-type)) |
| 39 | (define mapping-hooks-get-handle (record-accessor mapping-hooks-type 'get-handle)) |
| 40 | (define mapping-hooks-create-handle (record-accessor mapping-hooks-type 'create-handle)) |
| 41 | (define mapping-hooks-remove (record-accessor mapping-hooks-type 'remove)) |
| 42 | |
| 43 | (define mapping-type (make-record-type 'mapping '(hooks data))) |
| 44 | (define make-mapping (record-constructor mapping-type)) |
| 45 | (define mapping? (record-predicate mapping-type)) |
| 46 | (define mapping-hooks (record-accessor mapping-type 'hooks)) |
| 47 | (define mapping-data (record-accessor mapping-type 'data)) |
| 48 | (define set-mapping-hooks! (record-modifier mapping-type 'hooks)) |
| 49 | (define set-mapping-data! (record-modifier mapping-type 'data)) |
| 50 | |
| 51 | (define (mapping-get-handle map key) |
| 52 | ((mapping-hooks-get-handle (mapping-hooks map)) map key)) |
| 53 | (define (mapping-create-handle! map key . opts) |
| 54 | (apply (mapping-hooks-create-handle (mapping-hooks map)) map key opts)) |
| 55 | (define (mapping-remove! map key) |
| 56 | ((mapping-hooks-remove (mapping-hooks map)) map key)) |
| 57 | |
| 58 | (define (mapping-ref map key . dflt) |
| 59 | (cond |
| 60 | ((mapping-get-handle map key) => cdr) |
| 61 | (dflt => car) |
| 62 | (else #f))) |
| 63 | |
| 64 | (define (mapping-set! map key val) |
| 65 | (set-cdr! (mapping-create-handle! map key #f) val)) |
| 66 | |
| 67 | \f |
| 68 | |
| 69 | (define hash-table-mapping-hooks |
| 70 | (let ((wrap (lambda (proc) (lambda (1st . rest) (apply proc (mapping-data 1st) rest))))) |
| 71 | |
| 72 | (perfect-funcq 17 |
| 73 | (lambda (hash-proc assoc-proc delete-proc) |
| 74 | (let ((procs (list hash-proc assoc-proc delete-proc))) |
| 75 | (cond |
| 76 | ((equal? procs `(,hashq ,assq ,delq!)) |
| 77 | (make-mapping-hooks (wrap hashq-get-handle) |
| 78 | (wrap hashq-create-handle!) |
| 79 | (wrap hashq-remove!))) |
| 80 | ((equal? procs `(,hashv ,assv ,delv!)) |
| 81 | (make-mapping-hooks (wrap hashv-get-handle) |
| 82 | (wrap hashv-create-handle!) |
| 83 | (wrap hashv-remove!))) |
| 84 | ((equal? procs `(,hash ,assoc ,delete!)) |
| 85 | (make-mapping-hooks (wrap hash-get-handle) |
| 86 | (wrap hash-create-handle!) |
| 87 | (wrap hash-remove!))) |
| 88 | (else |
| 89 | (make-mapping-hooks (wrap |
| 90 | (lambda (table key) |
| 91 | (hashx-get-handle hash-proc assoc-proc table key))) |
| 92 | (wrap |
| 93 | (lambda (table key) |
| 94 | (hashx-create-handle hash-proc assoc-proc table key))) |
| 95 | (wrap |
| 96 | (lambda (table key) |
| 97 | (hashx-get-handle hash-proc assoc-proc delete-proc table key))))))))))) |
| 98 | |
| 99 | (define (make-hash-table-mapping table hash-proc assoc-proc delete-proc) |
| 100 | (make-mapping (hash-table-mapping-hooks hash-proc assoc-proc delete-proc) table)) |
| 101 | |
| 102 | (define (hash-table-mapping . options) |
| 103 | (let* ((size (or (and options (number? (car options)) (car options)) |
| 104 | 71)) |
| 105 | (hash-proc (or (kw-arg-ref options #:hash-proc) hash)) |
| 106 | (assoc-proc (or (kw-arg-ref options #:assoc-proc) |
| 107 | (cond |
| 108 | ((eq? hash-proc hash) assoc) |
| 109 | ((eq? hash-proc hashv) assv) |
| 110 | ((eq? hash-proc hashq) assq) |
| 111 | (else (error 'hash-table-mapping |
| 112 | "Hash-procedure specified with no known assoc function." |
| 113 | hash-proc))))) |
| 114 | (delete-proc (or (kw-arg-ref options #:delete-proc) |
| 115 | (cond |
| 116 | ((eq? hash-proc hash) delete!) |
| 117 | ((eq? hash-proc hashv) delv!) |
| 118 | ((eq? hash-proc hashq) delq!) |
| 119 | (else (error 'hash-table-mapping |
| 120 | "Hash-procedure specified with no known delete function." |
| 121 | hash-proc))))) |
| 122 | (table-constructor (or (kw-arg-ref options #:table-constructor) |
| 123 | (lambda (len) (make-vector len '()))))) |
| 124 | (make-hash-table-mapping (table-constructor size) |
| 125 | hash-proc |
| 126 | assoc-proc |
| 127 | delete-proc))) |
| 128 | |