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/* readonlyset.vala
*
* Copyright (C) 2007-2008 Jürg Billeter
*
* 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:
* Jürg Billeter <j@bitron.ch>
*/
using GLib;
/**
* Represents a read-only collection of items without duplicates.
*/
public class Gee.ReadOnlySet<G> : Object, Iterable<G>, Collection<G>, Set<G> {
public int size {
get { return _set.size; }
}
public Set<G> set {
set { _set = value; }
}
private Set<G> _set;
public ReadOnlySet (Set<G> set = null) {
this.set = set;
}
public Type get_element_type () {
return typeof (G);
}
public Gee.Iterator<G> iterator () {
if (_set == null) {
return new Iterator<G> ();
}
return _set.iterator ();
}
public bool contains (G item) {
if (_set == null) {
return false;
}
return _set.contains (item);
}
public bool add (G item) {
assert_not_reached ();
}
public bool remove (G item) {
assert_not_reached ();
}
public void clear () {
assert_not_reached ();
}
private class Iterator<G> : Object, Gee.Iterator<G> {
public bool next () {
return false;
}
public G get () {
return null;
}
}
}
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