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package Torello.HTML.NodeSearch.SearchLoops.CommentNodes;

import java.util.Vector;
import java.util.function.Predicate;

import Torello.HTML.*;
import Torello.Java.LV;

public class CmtNPeek
{
    public static CommentNodeIndex nth
        (Vector<? extends HTMLNode> html, int nth, LV l, Predicate<String> p)
    {
        HTMLNode n;

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

            if (    ((n = html.elementAt(i)).isCommentNode())       
                &&  p.test(((CommentNode) n).body)
                &&  (--nth == 0)
            )
                return new CommentNodeIndex(i, (CommentNode) n);

        return null;
    }

    public static CommentNodeIndex nthFromEnd
        (Vector<? extends HTMLNode> html, int nth, LV l, Predicate<String> p)
    {
        HTMLNode n;

        for (int i=l.end-1; i >= l.start; i--)

            if (    ((n = html.elementAt(i)).isCommentNode())       
                &&  p.test(((CommentNode) n).body)
                &&  (--nth == 0)
            )
                return new CommentNodeIndex(i, (CommentNode) n);

        return null;
    }

    public static Vector<CommentNodeIndex> all
        (Vector<? extends HTMLNode> html, LV l, Predicate<String> p)
    {
        Vector<CommentNodeIndex>    ret = new Vector<>();
        HTMLNode                    n;

        for (int i=l.start; i < l.end; i++)
            if ((n = html.elementAt(i)).isCommentNode())       
                if (p.test(((CommentNode) n).body))
                    ret.addElement(new CommentNodeIndex(i, (CommentNode) n));

        return ret;
    }

    public static Vector<CommentNodeIndex> allExcept
        (Vector<? extends HTMLNode> html, LV l, Predicate<String> p)
    {
        Vector<CommentNodeIndex>    ret = new Vector<>();
        HTMLNode                    n;

        for (int i=l.start; i < l.end; i++)
            if ((n=html.elementAt(i)).isCommentNode())       
                if (! p.test(((CommentNode) n).body))
                    ret.addElement(new CommentNodeIndex(i, (CommentNode) n));

        return ret;
    }
}