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package Torello.HTML.NodeSearch.searchLoops;

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

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

public class CmtNPoll
{
    public static CommentNode 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)
            )
                { html.removeElementAt(i); return (CommentNode) n; }

        return null;
    }

    public static CommentNode 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)
            )
                { html.removeElementAt(i); return (CommentNode) n; }
    
        return null;
    }

    public static Vector<CommentNode> all
        (Vector<? extends HTMLNode> html, LV l, Predicate<String> p)
    {
        Vector<CommentNode> ret = new Vector<>();
        int                 rC  = 0;
        HTMLNode            n;

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

            if ((n=html.elementAt(i)).isCommentNode())       
                if (p.test(((CommentNode) n).body))
                {
                    html.removeElementAt(i--);
                    ret.add((CommentNode) n);
                    rC++;
                }

        return ret;
    }

    public static Vector<CommentNode> allExcept
        (Vector<? extends HTMLNode> html, LV l, Predicate<String> p)
    {
        Vector<CommentNode> ret = new Vector<>();
        int                 rC  = 0;
        HTMLNode            n;

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

            if ((n=html.elementAt(i)).isCommentNode())       
                if (! p.test(((CommentNode) n).body))
                {
                    html.removeElementAt(i--);
                    ret.add((CommentNode) n);
                    rC++;
                }

        return ret;
    }
}