Mercurial > lasercutter

     1 /**

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

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

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

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

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

     7  * 	 the terms of this license.

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

     9  **/

    10 

    11 /* rich May 14, 2008 */

    12 

    13 package clojure.lang;

    14 

    15 import java.util.Collection;

    16 

    17 public class LazilyPersistentVector{

    18 

    19 

    20 static public IPersistentVector createOwning(Object... items){

    21 	if(items.length == 0)

    22 		return PersistentVector.EMPTY;

    23 	else if(items.length <= 32)

    24 		return new PersistentVector(items.length, 5, PersistentVector.EMPTY_NODE,items);

    25 	return PersistentVector.create(items);

    26 }

    27 

    28 static public IPersistentVector create(Collection coll){

    29 	if(!(coll instanceof ISeq) && coll.size() <= 32)

    30 		return createOwning(coll.toArray());

    31 	return PersistentVector.create(RT.seq(coll));

    32 }

    33 

    34 }
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 21 Aug 2010 06:25:44 -0400
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