/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
 * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
 * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the CPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the CPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/
package org.jruby.runtime;

/**
 *
 * @author  jpetersen
 */
public final class Iter {
    /** No block given */
    public static final Iter ITER_NOT = new Iter("NOT");
    /** Block given before last method call ("previous") */
    public static final Iter ITER_PRE = new Iter("PRE");
    /** Is currently a block*/
    public static final Iter ITER_CUR = new Iter("CUR");

    private String debug;

    private Iter(final String debug) {
        this.debug = debug;
    }

    public final boolean isNot() {
        return this == ITER_NOT;
    }

    public final boolean isPre() {
        return this == ITER_PRE;
    }

    public final boolean isCur() {
        return this == ITER_CUR;
    }

    public boolean isBlockGiven() {
        return !isNot();
    }

    public String toString() {
        return debug;
    }
}