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/* abstractmap.vala
*
* Copyright (C) 2007 Jürg Billeter
* Copyright (C) 2009 Didier Villevalois
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Tomaž Vajngerl <quikee@gmail.com>
*/
/**
* Skeletal implementation of the {@link Map} interface.
*
* Contains common code shared by all map implementations.
*
* @see HashMap
* @see TreeMap
*/
public abstract class Gee.AbstractMap<K,V> : Object, Iterable<Map.Entry<K,V>>, Map<K,V> {
/**
* {@inheritDoc}
*/
public abstract int size { get; }
/**
* {@inheritDoc}
*/
public virtual bool is_empty {
get { return size == 0; }
}
/**
* {@inheritDoc}
*/
public abstract Set<K> keys { owned get; }
/**
* {@inheritDoc}
*/
public abstract Collection<V> values { owned get; }
/**
* {@inheritDoc}
*/
public abstract Set<Map.Entry<K,V>> entries { owned get; }
/**
* {@inheritDoc}
*/
public abstract bool has_key (K key);
/**
* {@inheritDoc}
*/
public bool contains (K key) {
return has_key (key);
}
/**
* {@inheritDoc}
*/
public abstract bool has (K key, V value);
/**
* {@inheritDoc}
*/
public abstract new V? get (K key);
/**
* {@inheritDoc}
*/
public abstract new void set (K key, V value);
/**
* {@inheritDoc}
*/
public abstract bool unset (K key, out V? value = null);
/**
* {@inheritDoc}
*/
public abstract MapIterator<K,V> map_iterator ();
/**
* {@inheritDoc}
*/
public bool remove (K key, out V? value = null) {
V removed_value;
bool result = unset (key, out removed_value);
if (&value != null) {
value = removed_value;
}
return result;
}
/**
* {@inheritDoc}
*/
public abstract void clear ();
/**
* {@inheritDoc}
*/
public virtual void set_all (Map<K,V> map) {
foreach (Map.Entry<K,V> entry in map.entries) {
set (entry.key, entry.value);
}
}
/**
* {@inheritDoc}
*/
public virtual bool unset_all (Map<K,V> map) {
bool changed = false;
foreach (K key in map.keys) {
changed = changed | unset (key);
}
return changed;
}
/**
* {@inheritDoc}
*/
public bool remove_all (Map<K,V> map) {
return unset_all (map);
}
/**
* {@inheritDoc}
*/
public virtual bool has_all (Map<K,V> map) {
foreach (Map.Entry<K,V> entry in map.entries) {
if (!has (entry.key, entry.value)) {
return false;
}
}
return true;
}
/**
* {@inheritDoc}
*/
public bool contains_all (Map<K,V> map) {
return has_all (map);
}
private weak Map<K,V> _read_only_view;
/**
* {@inheritDoc}
*/
public virtual Map<K,V> read_only_view {
owned get {
Map<K,V> instance = _read_only_view;
if (_read_only_view == null) {
instance = new ReadOnlyMap<K,V> (this);
_read_only_view = instance;
instance.add_weak_pointer ((void**) (&_read_only_view));
}
return instance;
}
}
/**
* {@inheritDoc}
*/
public Type key_type {
get { return typeof (K); }
}
/**
* {@inheritDoc}
*/
public Type value_type {
get { return typeof (V); }
}
/**
* {@inheritDoc}
*/
public Type element_type {
get { return typeof (Map.Entry<K,V>); }
}
/**
* {@inheritDoc}
*/
public Iterator<Map.Entry<K,V>> iterator () {
return entries.iterator ();
}
}
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