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Pure Functional Programming Semantics For Java
/**
* 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 Dec 6, 2007 */
package org.pure4j.collections;
public class StringSeq extends ASeq {
public final CharSequence s;
public final int i;
static public StringSeq create(CharSequence s) {
if (s.length() == 0)
return null;
return new StringSeq(s, 0);
}
StringSeq(CharSequence s, int i) {
this.s = s;
this.i = i;
}
public Character first() {
return Character.valueOf(s.charAt(i));
}
public ISeq next() {
if (i + 1 < s.length())
return new StringSeq(s, i + 1);
return null;
}
public int count() {
return s.length() - i;
}
}