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#* @vtlvariable name="packElem" type="java.lang.String" *#
#* @vtlvariable name="ctx" type="org.kevoree.modeling.kotlin.generator.GenerationContext" *#

package ${packElem}.util;

#set($mutableOrNot="Mutable")

public class DeepIterator(val root : ${ctx.getKevoreeContainer().get()}) : ${mutableOrNot}Iterator<${ctx.getKevoreeContainer().get()}> {

    private var currentObjSubIt : Iterator<${ctx.getKevoreeContainer().get()}>? = null;
    private var currentObj : ${ctx.getKevoreeContainer().get()}?  = null;
    private var rootElems : Iterator<${ctx.getKevoreeContainer().get()}> = root.containedElements().iterator()
   // private var rootElems : List = root.containedElementsList()
   // private var rootElemsIndice = 0

    override fun hasNext() : Boolean {
        /* case 1..1 dep */
        if(currentObj != null){return true;}
        if (currentObjSubIt != null && currentObjSubIt!!.hasNext()) {return true;}
        //case next step root low level
        //if(rootElemsIndice < rootElems.size()){
        if(rootElems.hasNext()){
            currentObj = rootElems.next();
            //currentObj = rootElems.get(rootElemsIndice) as ${ctx.getKevoreeContainer().get()}?;
            //rootElemsIndice = rootElemsIndice + 1;
            currentObjSubIt = null;
        } else {
            return false
        }
        return hasNext();
    }

    override fun next() : ${ctx.getKevoreeContainer().get()} {
        if(hasNext()){
            if(currentObj != null){
                var result : ${ctx.getKevoreeContainer().get()} = currentObj!!
                currentObj = null;
                currentObjSubIt = DeepIterator(result) //go down
                return result;
            } else {
                if (currentObjSubIt != null && currentObjSubIt!!.hasNext()) {
                    return currentObjSubIt!!.next();
                } else {
                    throw Exception();
                }
            }
        } else {
            throw Exception();
        }
    }

#if(!$ctx.jS)override#end public fun remove() {
        throw java.lang.UnsupportedOperationException();
}

}