rlm@10: /**
rlm@10:  *   Copyright (c) Rich Hickey. All rights reserved.
rlm@10:  *   The use and distribution terms for this software are covered by the
rlm@10:  *   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
rlm@10:  *   which can be found in the file epl-v10.html at the root of this distribution.
rlm@10:  *   By using this software in any fashion, you are agreeing to be bound by
rlm@10:  * 	 the terms of this license.
rlm@10:  *   You must not remove this notice, or any other, from this software.
rlm@10:  **/
rlm@10: 
rlm@10: /* rich Mar 3, 2008 */
rlm@10: 
rlm@10: package clojure.lang;
rlm@10: 
rlm@10: public abstract class ATransientSet extends AFn implements ITransientSet{
rlm@10: 	ITransientMap impl;
rlm@10: 
rlm@10: 	ATransientSet(ITransientMap impl) {
rlm@10: 		this.impl = impl;
rlm@10: 	}
rlm@10: 	
rlm@10: 	public int count() {
rlm@10: 		return impl.count();
rlm@10: 	}
rlm@10: 
rlm@10: 	public ITransientSet conj(Object val) {
rlm@10: 		ITransientMap m = impl.assoc(val, val);
rlm@10: 		if (m != impl) this.impl = m;
rlm@10: 		return this;
rlm@10: 	}
rlm@10: 
rlm@10: 	public boolean contains(Object key) {
rlm@10: 		return this != impl.valAt(key, this);
rlm@10: 	}
rlm@10: 
rlm@10: 	public ITransientSet disjoin(Object key) throws Exception {
rlm@10: 		ITransientMap m = impl.without(key);
rlm@10: 		if (m != impl) this.impl = m;
rlm@10: 		return this;
rlm@10: 	}
rlm@10: 
rlm@10: 	public Object get(Object key) {
rlm@10: 		return impl.valAt(key);
rlm@10: 	}
rlm@10: 
rlm@10: 	public Object invoke(Object key, Object notFound) throws Exception {
rlm@10: 		return impl.valAt(key, notFound);
rlm@10: 	}
rlm@10: 
rlm@10: 	public Object invoke(Object key) throws Exception {
rlm@10: 		return impl.valAt(key);	
rlm@10: 	}
rlm@10: 	
rlm@10: }