/
ChunkedCons.java
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/
ChunkedCons.java
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/**
* 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 May 25, 2009 */
package clojure.lang;
final public class ChunkedCons extends ASeq implements IChunkedSeq{
final IChunk chunk;
final ISeq _more;
ChunkedCons(IPersistentMap meta, IChunk chunk, ISeq more){
super(meta);
this.chunk = chunk;
this._more = more;
}
public ChunkedCons(IChunk chunk, ISeq more){
this(null,chunk, more);
}
public Obj withMeta(IPersistentMap meta){
if(meta != _meta)
return new ChunkedCons(meta, chunk, _more);
return this;
}
public Object first(){
return chunk.nth(0);
}
public ISeq next(){
if(chunk.count() > 1)
return new ChunkedCons(chunk.dropFirst(), _more);
return chunkedNext();
}
public ISeq more(){
if(chunk.count() > 1)
return new ChunkedCons(chunk.dropFirst(), _more);
if(_more == null)
return PersistentList.EMPTY;
return _more;
}
public IChunk chunkedFirst(){
return chunk;
}
public ISeq chunkedNext(){
return chunkedMore().seq();
}
public ISeq chunkedMore(){
if(_more == null)
return PersistentList.EMPTY;
return _more;
}
}