# ListIterator.java

    /*
    ** Module   : ListIterator.java
    ** Abstract : Implementation of the Progress.Collections.ListIterator builtin class.
    **
    ** Copyright (c) 2025, Golden Code Development Corporation.
    **
    ** -#- -I- --Date-- -------------------------------Description--------------------------------
    ** 001 ICP 20250414 First version.
    */

    /*
    ** This program is free software: you can redistribute it and/or modify
    ** it under the terms of the GNU Affero General Public License as
    ** published by the Free Software Foundation, either version 3 of the
    ** License, or (at your option) any later version.
    **
    ** This program is distributed in the hope that it will be useful,
    ** but WITHOUT ANY WARRANTY; without even the implied warranty of
    ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ** GNU Affero General Public License for more details.
    **
    ** You may find a copy of the GNU Affero GPL version 3 at the following
    ** location: https://www.gnu.org/licenses/agpl-3.0.en.html
    **
    ** Additional terms under GNU Affero GPL version 3 section 7:
    **
    **   Under Section 7 of the GNU Affero GPL version 3, the following additional
    **   terms apply to the works covered under the License.  These additional terms
    **   are non-permissive additional terms allowed under Section 7 of the GNU
    **   Affero GPL version 3 and may not be removed by you.
    **
    **   0. Attribution Requirement.
    **
    **     You must preserve all legal notices or author attributions in the covered
    **     work or Appropriate Legal Notices displayed by works containing the covered
    **     work.  You may not remove from the covered work any author or developer
    **     credit already included within the covered work.
    **
    **   1. No License To Use Trademarks.
    **
    **     This license does not grant any license or rights to use the trademarks
    **     Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
    **     of Golden Code Development Corporation. You are not authorized to use the
    **     name Golden Code, FWD, or the names of any author or contributor, for
    **     publicity purposes without written authorization.
    **
    **   2. No Misrepresentation of Affiliation.
    **
    **     You may not represent yourself as Golden Code Development Corporation or FWD.
    **
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    **     Golden Code Development Corporation, FWD, or any author or contributor to
    **     the covered work, without written authorization.
    **
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    **
    **     You may not represent the covered work as solely your work.  All modified
    **     versions of the covered work must be marked in a reasonable way to make it
    **     clear that the modified work is not originating from Golden Code Development
    **     Corporation or FWD.  All modified versions must contain the notices of
    **     attribution required in this license.
    */

    package com.goldencode.p2j.oo.collections;

    import com.goldencode.p2j.util.*;
    import com.goldencode.p2j.oo.lang.*;

    import java.util.*;

    import static com.goldencode.p2j.util.BlockManager.*;
    import static com.goldencode.p2j.report.ReportConstants.*;
    import static com.goldencode.p2j.util.InternalEntry.Type;

    /**
     * Implementation of the Progress.Collections.ListIterator builtin interface.
     */
    @LegacyResource(resource = "Progress.Collections.ListIterator")
    @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
    public final class ListIterator
    extends BaseObject
    implements com.goldencode.p2j.oo.collections.Iiterator
    {
       @LegacySignature(type = Type.PROPERTY, name = "Current")
       private object<? extends _BaseObject_> current = TypeFactory.object(_BaseObject_.class);

       /** The elements to iterate. */
       private java.util.List<object<? extends _BaseObject_>> elements;

       /** Current index in the list. */
       private int index;

       @LegacySignature(type = Type.CONSTRUCTOR, name = "ListIterator")
       @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
       public void __collections_listIterator_constructor__()
       {
           __lang_BaseObject_constructor__();
           this.index = 0;
           this.elements = null;
           this.current = null;
       }

       @LegacySignature(type = Type.GETTER, name = "Current", returns = "OBJECT", qualified = "progress.lang.object")
       @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
       public object<? extends com.goldencode.p2j.oo.lang._BaseObject_> getCurrent()
       {
          return current;
       }

       @LegacySignature(type = Type.METHOD, name = "MoveNext", returns = "LOGICAL")
       @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
       public logical moveNext()
       {
          if (elements != null)
          {
             if (index < elements.size())
             {
                current = elements.get(index++);
                return new logical(true);
             }
             else
             {
                current = null;
                return new logical(false);
             }
          }
          return new logical(false);
       }

       @LegacySignature(type = Type.METHOD, name = "Reset")
       @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
       public void reset()
       {
          index = 0;
          current = null;
       }

       /**
        * Set the internal list of elements to iterate over.
        *
        * @param    list
        *           the list to iterate
        */
       public void setElements(java.util.List<object<? extends _BaseObject_>> list)
       {
          if (list != null)
          {
             this.elements = list;
          }
          this.index = 0;
          this.current = null;
       }
    }