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(define srfi-69-dto
(let ()
(define (prep-dto-arg proc)
(lambda (dto . args)
(apply proc args)))
(define (t69-hash-table-mutable?* dto table)
#t)
(define (t69-hash-table-ref* dto table key fail success)
(define default (cons #f #f))
(define found (t69-hash-table-ref/default table key default))
(if (eq? found default)
(fail)
(success found)))
(define (t69-hash-table-set!* dto table . obj)
(let loop ((obj obj))
(if (null? obj)
table
(begin
(t69-hash-table-set! table (car obj) (cadr obj))
(loop (cddr obj))))))
(define (t69-hash-table-update!/default* dto table key proc default)
(t69-hash-table-update!/default table key proc default)
table)
(define (t69-hash-table-delete-all!* dto table keys)
(for-each
(lambda (key)
(t69-hash-table-delete! table key))
keys)
table)
(define (t69-hash-table-foreach* dto proc table)
(t69-hash-table-walk table proc))
(define (t69-hash-table-map!* dto proc table)
(t69-hash-table-walk table (lambda (key value)
(t69-hash-table-set! table key (proc key value))))
table)
(define (t69-hash-table-filter!* dto proc table)
(t69-hash-table-walk table
(lambda (key value)
(unless (proc key value)
(t69-hash-table-delete! table key))))
table)
(define (t69-hash-table-fold* dto proc knil table)
(t69-hash-table-fold table proc knil))
(define (t69-hash-table-find-update!* dto table key fail success)
(define (handle-success value)
(define (update new-key new-value)
(unless (eq? new-key key)
(t69-hash-table-delete! table key))
(t69-hash-table-set! table new-key new-value)
table)
(define (remove)
(t69-hash-table-delete! table key)
table)
(success key value update remove))
(define (handle-fail)
(define (ignore)
table)
(define (insert value)
(t69-hash-table-set! table key value)
table)
(fail insert ignore))
(define default (cons #f #f))
(define found (t69-hash-table-ref/default table key default))
(if (eq? default found)
(handle-fail)
(handle-success found)))
(define (t69-hash-table-comparator* dto table)
(make-comparator (lambda args #t)
(or (t69-hash-table-equivalence-function table)
equal?)
#f
(t69-hash-table-hash-function table)))
(make-dto
dictionary?-id (prep-dto-arg t69-hash-table?)
dict-mutable?-id t69-hash-table-mutable?*
dict-ref-id t69-hash-table-ref*
dict-ref/default-id (prep-dto-arg t69-hash-table-ref/default)
dict-set-id t69-hash-table-set!*
dict-delete-all-id t69-hash-table-delete-all!*
dict-contains?-id (prep-dto-arg t69-hash-table-exists?)
dict-update/default-id t69-hash-table-update!/default*
dict-size-id (prep-dto-arg t69-hash-table-size)
dict-keys-id (prep-dto-arg t69-hash-table-keys)
dict-values-id (prep-dto-arg t69-hash-table-values)
dict-map-id t69-hash-table-map!*
dict-filter-id t69-hash-table-filter!*
dict-for-each-id t69-hash-table-foreach*
dict-fold-id t69-hash-table-fold*
dict->alist-id (prep-dto-arg t69-hash-table->alist)
dict-find-update-id t69-hash-table-find-update!*
dict-comparator-id t69-hash-table-comparator*)))
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