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