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118 lines
4.8 KiB
Scheme
118 lines
4.8 KiB
Scheme
;;; installed-scm-file
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;;;; Copyright (C) 1996, 2001, 2006, 2013 Free Software Foundation, Inc.
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;;;;
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;;;
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(define-module (ice-9 mapping)
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:use-module (ice-9 poe)
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:export (mapping-hooks-type make-mapping-hooks mapping-hooks?
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mapping-hooks-get-handle mapping-hooks-create-handle
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mapping-hooks-remove mapping-type make-mapping mapping?
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mapping-hooks mapping-data set-mapping-hooks! set-mapping-data!
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mapping-get-handle mapping-create-handle! mapping-remove!
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mapping-ref mapping-set! hash-table-mapping-hooks
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make-hash-table-mapping hash-table-mapping))
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(issue-deprecation-warning
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"(ice-9 mapping) is deprecated. Use srfi-69 or rnrs hash tables instead.")
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(define mapping-hooks-type (make-record-type 'mapping-hooks '(get-handle
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create-handle
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remove)))
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(define make-mapping-hooks (perfect-funcq 17 (record-constructor mapping-hooks-type)))
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(define mapping-hooks? (record-predicate mapping-hooks-type))
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(define mapping-hooks-get-handle (record-accessor mapping-hooks-type 'get-handle))
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(define mapping-hooks-create-handle (record-accessor mapping-hooks-type 'create-handle))
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(define mapping-hooks-remove (record-accessor mapping-hooks-type 'remove))
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(define mapping-type (make-record-type 'mapping '(hooks data)))
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(define make-mapping (record-constructor mapping-type))
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(define mapping? (record-predicate mapping-type))
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(define mapping-hooks (record-accessor mapping-type 'hooks))
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(define mapping-data (record-accessor mapping-type 'data))
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(define set-mapping-hooks! (record-modifier mapping-type 'hooks))
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(define set-mapping-data! (record-modifier mapping-type 'data))
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(define (mapping-get-handle map key)
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((mapping-hooks-get-handle (mapping-hooks map)) map key))
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(define (mapping-create-handle! map key init)
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((mapping-hooks-create-handle (mapping-hooks map)) map key init))
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(define (mapping-remove! map key)
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((mapping-hooks-remove (mapping-hooks map)) map key))
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(define* (mapping-ref map key #:optional dflt)
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(cond
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((mapping-get-handle map key) => cdr)
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(else dflt)))
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(define (mapping-set! map key val)
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(set-cdr! (mapping-create-handle! map key #f) val))
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(define hash-table-mapping-hooks
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(let ((wrap (lambda (proc) (lambda (1st . rest) (apply proc (mapping-data 1st) rest)))))
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(perfect-funcq 17
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(lambda (hash-proc assoc-proc)
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(let ((procs (list hash-proc assoc-proc)))
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(cond
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((equal? procs `(,hashq ,assq))
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(make-mapping-hooks (wrap hashq-get-handle)
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(wrap hashq-create-handle!)
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(wrap hashq-remove!)))
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((equal? procs `(,hashv ,assv))
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(make-mapping-hooks (wrap hashv-get-handle)
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(wrap hashv-create-handle!)
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(wrap hashv-remove!)))
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((equal? procs `(,hash ,assoc))
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(make-mapping-hooks (wrap hash-get-handle)
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(wrap hash-create-handle!)
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(wrap hash-remove!)))
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(else
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(make-mapping-hooks (wrap
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(lambda (table key)
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(hashx-get-handle hash-proc assoc-proc table key)))
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(wrap
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(lambda (table key init)
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(hashx-create-handle! hash-proc assoc-proc table key init)))
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(wrap
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(lambda (table key)
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(hashx-remove! hash-proc assoc-proc table key)))))))))))
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(define (make-hash-table-mapping table hash-proc assoc-proc)
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(make-mapping (hash-table-mapping-hooks hash-proc assoc-proc) table))
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(define* (hash-table-mapping #:optional (size 71) #:key
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(hash-proc hash)
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(assoc-proc
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(or (assq-ref `((,hashq . ,assq)
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(,hashv . ,assv)
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(,hash . ,assoc))
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hash-proc)
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(error 'hash-table-mapping
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"Hash-procedure specified with no known assoc function."
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hash-proc)))
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(table-constructor
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(lambda (len) (make-vector len '()))))
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(make-hash-table-mapping (table-constructor size)
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hash-proc
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assoc-proc))
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