/**

* Copyright (c) Rich Hickey. All rights reserved.

* The use and distribution terms for this software are covered by the

* Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)

* which can be found in the file epl-v10.html at the root of this distribution.

* By using this software in any fashion, you are agreeing to be bound by

* the terms of this license.

* You must not remove this notice, or any other, from this software.

**/

/* rich Mar 3, 2008 */

package clojure.lang;

public abstract class ATransientSet extends AFn implements ITransientSet{

volatile ITransientMap impl;

ATransientSet(ITransientMap impl) {

this.impl = impl;

}

public int count() {

return impl.count();

}

public ITransientSet conj(Object val) {

ITransientMap m = impl.assoc(val, val);

if (m != impl) this.impl = m;

return this;

}

public boolean contains(Object key) {

return this != impl.valAt(key, this);

}

public ITransientSet disjoin(Object key) {

ITransientMap m = impl.without(key);

if (m != impl) this.impl = m;

return this;

}

public Object get(Object key) {

return impl.valAt(key);

}

public Object invoke(Object key, Object notFound) {

return impl.valAt(key, notFound);

}

public Object invoke(Object key) {

return impl.valAt(key);

}

}