feat: 9.5.9

s/hashtable-types.ss

@@ -0,0 +1,47 @@
+;;; hashtable-types.ss
+;;; Copyright 1984-2017 Cisco Systems, Inc.
+;;; 
+;;; Licensed under the Apache License, Version 2.0 (the "License");
+;;; you may not use this file except in compliance with the License.
+;;; You may obtain a copy of the License at
+;;; 
+;;; http://www.apache.org/licenses/LICENSE-2.0
+;;; 
+;;; Unless required by applicable law or agreed to in writing, software
+;;; distributed under the License is distributed on an "AS IS" BASIS,
+;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+;;; See the License for the specific language governing permissions and
+;;; limitations under the License.
+
+(define-record-type (hashtable make-xht xht?)
+  (fields (immutable type xht-type) (immutable mutable? xht-mutable?))
+  (nongenerative #{hashtable bu811z2onf9o6tfc-0}))
+
+(define-record-type ht
+  (parent hashtable)
+  (fields (mutable vec) (mutable minlen) (mutable size))
+  (nongenerative #{ht bu811z2onf9o6tfc-6}))
+
+(define-record-type eq-ht
+  (parent ht)
+  (fields (immutable subtype)) ; eq-hashtable-subtype-{normal,weak,ephemeron}
+  (nongenerative #{eq-ht icguu8mlhm1y7ywsairxck-0})
+  (sealed #t))
+
+(define-record-type symbol-ht
+  (parent ht)
+  (fields (immutable equiv?))
+  (nongenerative #{symbol-ht bu811z2onf9o6tfc-8})
+  (sealed #t))
+
+(define-record-type gen-ht
+  (parent ht)
+  (fields (immutable hash) (immutable equiv?))
+  (nongenerative #{gen-ht bu811z2onf9o6tfc-7})
+  (sealed #t))
+
+(define-record-type eqv-ht
+  (parent hashtable)
+  (fields (immutable eqht) (immutable genht))
+  (nongenerative #{eqv-ht bu811z2onf9o6tfc-4})
+  (sealed #t))