clean: make some classes abstract or interfaces

[nit.git] / lib / standard / collection / hash_collection.nit

diff --git a/lib/standard/collection/hash_collection.nit b/lib/standard/collection/hash_collection.nit
index 989308c..0c772b8 100644 (file)
--- a/lib/standard/collection/hash_collection.nit
+++ b/lib/standard/collection/hash_collection.nit
@@ -17,7 +17,7 @@ import array
 import hash
 
 # A HashCollection is an array of HashNode[K] indexed by the K hash value
-private class HashCollection[K: Object, N: HashNode[K]]
+private abstract class HashCollection[K: Object, N: HashNode[Object]]
        super ArrayCapable[nullable N]
 
        var _array: nullable NativeArray[nullable N] = null # Used to store items
@@ -186,7 +186,7 @@ private class HashCollection[K: Object, N: HashNode[K]]
        end
 end
 
-private class HashNode[K: Object]
+private abstract class HashNode[K: Object]
        var _key: K
        type N: HashNode[K]
        readable writable var _next_item: nullable N = null