Class PersistentHashSet

src/jvm/clojure/lang/PersistentHashSet.java:17–132

import java.util.List;

public class PersistentHashSet extends APersistentSet implements IObj, IEditableCollection {

private static final long serialVersionUID = 6973890746204954938L;

static public final PersistentHashSet EMPTY = new PersistentHashSet(null, PersistentHashMap.EMPTY);

final IPersistentMap _meta;

public static PersistentHashSet create(Object... init){
	ITransientSet ret = (ITransientSet)EMPTY.asTransient();
	for(int i = 0; i < init.length; i++)
		{
		ret = (ITransientSet)ret.conj(init[i]);
		}
	return (PersistentHashSet)ret.persistent();
}

public static PersistentHashSet create(List init){
	ITransientSet ret = (ITransientSet)EMPTY.asTransient();
	for(Object key : init)
		{
		ret = (ITransientSet) ret.conj(key);
		}
	return (PersistentHashSet)ret.persistent();
}

static public PersistentHashSet create(ISeq items){
	ITransientSet ret = (ITransientSet)EMPTY.asTransient();
	for(; items != null; items = items.next())
		{
		ret = (ITransientSet) ret.conj(items.first());
		}
	return (PersistentHashSet)ret.persistent();
}

public static PersistentHashSet createWithCheck(Object... init){
    ITransientSet ret = (ITransientSet)EMPTY.asTransient();
	for(int i = 0; i < init.length; i++)
		{
		ret = (ITransientSet) ret.conj(init[i]);
		if(ret.count() != i + 1)
			throw new IllegalArgumentException("Duplicate key: " + init[i]);
		}
	return (PersistentHashSet) ret.persistent();
}

public static PersistentHashSet createWithCheck(List init){
    ITransientSet ret = (ITransientSet)EMPTY.asTransient();
	int i=0;
	for(Object key : init)
		{
		ret = (ITransientSet) ret.conj(key);
		if(ret.count() != i + 1)
			throw new IllegalArgumentException("Duplicate key: " + key);		
		++i;
		}
    return (PersistentHashSet) ret.persistent();
}