Package gnu.kawa.util

Class GeneralHashTable<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

gnu.kawa.util.AbstractHashTable<HashNode<K,V>,K,V>

gnu.kawa.util.GeneralHashTable<K,V>

All Implemented Interfaces:

Map<K,V>

Direct Known Subclasses:

IdentityHashTable, LitTable, NamedCharTable, NameLookup

public class GeneralHashTable<K,V>
extends AbstractHashTable<HashNode<K,V>,K,V>

A generic hash table. Supports deletions, and re-allocates the table when too big. The equivalence relation can be customized.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields inherited from class gnu.kawa.util.AbstractHashTable

DEFAULT_INITIAL_SIZE, mask, num_bindings, table

Constructor Summary

Constructors

Constructor	Description
GeneralHashTable()
GeneralHashTable(int capacity)

Method Summary

Modifier and Type	Method	Description
protected HashNode<K,V>[]	allocEntries(int n)	Allocate Entry[n].
protected int	getEntryHashCode(HashNode<K,V> entry)	Extract hash-code from Entry.
protected HashNode<K,V>	getEntryNext(HashNode<K,V> entry)	Extract next Entry in same hash-bucket.
HashNode<K,V>	getNode(Object key)	This override helps Kawa type-inference - for example in srfi69.scm.
protected HashNode<K,V>	makeEntry(K key, int hash, V value)	Allocate a new node in the hash table.
protected void	setEntryNext(HashNode<K,V> entry, HashNode<K,V> next)	Set next Entry in same hash-bucket.

Methods inherited from class gnu.kawa.util.AbstractHashTable

clear, entrySet, get, get, getOrDefault, hash, hashToIndex, matches, matches, put, put, rehash, remove, size

Methods inherited from class java.util.AbstractMap

clone, containsKey, containsValue, equals, hashCode, isEmpty, keySet, putAll, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

GeneralHashTable

public GeneralHashTable()

GeneralHashTable

public GeneralHashTable(int capacity)

Method Details

getEntryHashCode

protected int getEntryHashCode(HashNode<K,V> entry)

Description copied from class: AbstractHashTable

Extract hash-code from Entry.

Specified by:

getEntryHashCode in class AbstractHashTable<HashNode<K,V>,K,V>

getEntryNext

protected HashNode<K,V> getEntryNext(HashNode<K,V> entry)

Description copied from class: AbstractHashTable

Extract next Entry in same hash-bucket.

Specified by:

getEntryNext in class AbstractHashTable<HashNode<K,V>,K,V>

setEntryNext

protected void setEntryNext(HashNode<K,V> entry,
 HashNode<K,V> next)

Description copied from class: AbstractHashTable

Set next Entry in same hash-bucket.

Specified by:

setEntryNext in class AbstractHashTable<HashNode<K,V>,K,V>

allocEntries

protected HashNode<K,V>[] allocEntries(int n)

Description copied from class: AbstractHashTable

Allocate Entry[n].

Specified by:

allocEntries in class AbstractHashTable<HashNode<K,V>,K,V>

makeEntry

protected HashNode<K,V> makeEntry(K key,
 int hash,
 V value)

Allocate a new node in the hash table.

Specified by:

makeEntry in class AbstractHashTable<HashNode<K,V>,K,V>

getNode

public HashNode<K,V> getNode(Object key)

This override helps Kawa type-inference - for example in srfi69.scm.

Overrides:

getNode in class AbstractHashTable<HashNode<K,V>,K,V>