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package Torello.HTML;

import Torello.Java.LV;

import java.util.Vector;
import java.util.stream.IntStream;

class RemoveAll
{
    static int[] removeAll(
            final Vector<? super TagNode>   html,
            final int                       sPos,
            final int                       ePos
        )
    {
        // Use Java Stream to keep a list of Vector-Locations that were updated / modified.
        IntStream.Builder b = IntStream.builder();

        // Loop Variables
        LV      l = new LV(sPos, ePos, html);
        TagNode tn;

        for (int i=l.start; i < l.end; i++)

            // REQUIREMENTS: Only Opening-TagNodes
            // If element-length = tok-length+2, there are no attributes: '<', TOKEN, '>'

            if ((tn = ((HTMLNode) html.elementAt(i)).openTag()) != null)

                if (tn.str.length() > (tn.tok.length() + 2))
                {
                    // Replace the old TagNode
                    html.setElementAt(tn.removeAllAV(), i);

                    // Make sure to keep the index where it resides, to return to the user
                    b.accept(i);
                }

        // Build the IntStream, Convert the IntStream -> int[], Return it.
        return b.build().toArray();
    }

    static int[] removeAll(
            final Vector<? super TagNode> html,
            final int[] posArr
        )
    {
        // Use Java Stream to keep a list of Vector-Locations that were updated / modified.
        IntStream.Builder b = IntStream.builder();

        for (int i : posArr)
        {
            HTMLNode n = (HTMLNode) html.elementAt(i);

            if (! n.isTagNode()) throw new TagNodeExpectedException(i);

            TagNode tn = (TagNode) n;

            if (tn.isClosing) throw new OpeningTagNodeExpectedException(i);


            // If element-length = tok-length+2, there are no attributes!
            // Otherwise, replace the old TagNode with a new, empty, one
            // Make sure to keep the index where it resides, to return to the user

            if (tn.str.length() > (tn.tok.length() + 2))
            {                                                   
                html.setElementAt(tn.removeAllAV(), i);
                b.accept(i);
            }
        }

        // Build the IntStream, Convert the IntStream -> int[], Return it.
        return b.build().toArray();
    }

}