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;; -*-theme-*-
;; Copyright (C) 2015 Tommi Höynälänmaa
;; Distributed under GNU Lesser General Public License version 3,
;; see file doc/LGPL-3.
(define-body (examples hash-table)
(import (standard-library list-utilities))
(define-param-method make-hash-table (%key %value)
(((hash (:procedure (%key <integer>) <integer> pure))
(eq-pred? (:procedure (%key %key) <boolean> pure))
(i-size <integer>)
(dummy %value))
(:hash-table %key %value) pure)
(let ((v-l (make-mutable-vector
(:uniform-list (:pair %key (:singleton %value)))
i-size
null)))
(create (:hash-table %key %value) v-l i-size hash eq-pred?)))
(define-static-param-virtual-method gen-assoc (%key %value)
(((al (:hash-table %key %value)) (obj-key %key))
(:maybe %value)
pure)
(let* ((i-index ((field-ref al 'hash) obj-key (field-ref al 'i-size)))
(l-assoc (mutable-vector-ref (field-ref al 'v-l-contents) i-index))
(obj-assoc (assoc-general obj-key l-assoc
null (field-ref al 'eq-pred?))))
(if (not-null? obj-assoc)
(let ((obj1 (cast (:pair %key (:singleton %value)) obj-assoc)))
(singleton-get-element (cdr obj1)))
null)))
(define-static-param-virtual-method gen-assoc-set! (%key %value)
(((al (:hash-table %key %value))
(obj-key %key)
(obj-value %value))
<none>
nonpure)
(let* ((i-index ((field-ref al 'hash) obj-key (field-ref al 'i-size)))
(v-l-contents (field-ref al 'v-l-contents))
(l-assoc (mutable-vector-ref v-l-contents i-index))
(obj-assoc (assoc-general obj-key l-assoc
null (field-ref al 'eq-pred?))))
(if (not-null? obj-assoc)
(let ((obj1 (cast (:pair %key (:singleton %value)) obj-assoc)))
(singleton-set-element! (cdr obj1) obj-value))
(let* ((sgt (make-singleton obj-value))
(binding (cons obj-key sgt)))
(mutable-vector-set! v-l-contents i-index
(cons binding l-assoc)))))))
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