interim checkin, added Tuple, ArraySeq

clojure.iml

@@ -5,7 +5,7 @@
     <output url="file://$MODULE_DIR$/classes" />
     <exclude-output />
     <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/jvm" isTestSource="false" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />

src/jvm/clojure/lang/ArraySeq.java

@@ -0,0 +1,43 @@
+/**
+ *   Copyright (c) Rich Hickey. All rights reserved.
+ *   The use and distribution terms for this software are covered by the
+ *   Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
+ *   which can be found in the file CPL.TXT 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 Jun 19, 2006 */
+
+package clojure.lang;
+
+public class ArraySeq implements ISeq{
+final Object[] array;
+final int i;
+
+static public ArraySeq create(Object[] array){
+	if(array.length == 0)
+		return null;
+	return new ArraySeq(array, 0);
+}
+
+ArraySeq(Object[] array, int i){
+	this.array = array;
+	this.i = i;
+}
+
+public Object first() {
+	return array[i];
+}
+
+public ISeq rest() {
+	if(i+1 < array.length)
+		return new ArraySeq(array, i + 1);
+	return null;
+}
+
+public int index(){
+	return i;
+}
+}

src/jvm/clojure/lang/Tuple.java

@@ -0,0 +1,74 @@
+/**
+ *   Copyright (c) Rich Hickey. All rights reserved.
+ *   The use and distribution terms for this software are covered by the
+ *   Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
+ *   which can be found in the file CPL.TXT 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 Jun 19, 2006 */
+
+package clojure.lang;
+
+public class Tuple implements ISequential{
+
+final Object[] array;
+
+final public static Tuple EMPTY = new Tuple();
+
+static public Tuple create(Object... init){
+	return new Tuple(init);
+}
+/**
+ * This ctor captures/aliases the passed array, so do not modify later !
+ * @param init {key1,val1,key2,val2,...}
+ */
+public Tuple(Object... init){
+	this.array = init;
+}
+
+public Object get(int i){
+	return array[i];
+}
+
+public boolean equals(Object key){
+	if(this == key) return true;
+	if(key == null || getClass() != key.getClass()) return false;
+
+	final Tuple tuple = (Tuple) key;
+
+	if(tuple.array.length != array.length)
+		return false;
+
+	for(int i = 0; i < array.length; i++)
+		{
+		if(!equalKey(array[i],tuple.array[i]))
+			return false;
+		}
+
+	return true;
+}
+
+public int hashCode(){
+	int ret = 0;
+	for(int i = 0; i < array.length; i++)
+		{
+		Object o = array[i];
+		if(o != null)
+			ret ^= o.hashCode();
+		}
+	return ret;
+}
+
+private boolean equalKey(Object k1,Object k2){
+    if(k1 == null)
+        return k2 == null;
+    return k1.equals(k2);
+}
+
+public ISeq seq() {
+	return ArraySeq.create(array);
+}
+}