/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com

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 should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx;
import gplx.core.lists.*;
public class List_adp_ {
	public static final    List_adp Noop = new List_adp_noop();
	public static List_adp New()					{return new List_adp_obj();}
	public static List_adp New_w_size(int v)		{return new List_adp_obj(v);}
	public static List_adp New_by_many(Object... ary) {
		List_adp rv = new List_adp_obj();
		rv.Add_many(ary);
		return rv;
	}
	public static void Del_at_last(List_adp list) {list.Del_at(list.Count() - 1);}
	public static Object Pop(List_adp list) {
		int lastIdx = list.Count() - 1;
		Object rv = list.Get_at(lastIdx);
		list.Del_at(lastIdx);
		return rv;
	}
	public static Object Pop_first(List_adp list) {	// NOTE: dirty way of implementing FIFO queue; should not be used with lists with many members
		Object rv = list.Get_at(0);
		list.Del_at(0);
		return rv;
	}
	public static Object Pop_last(List_adp list) {
		int last_idx = list.Count() - 1;
		Object rv = list.Get_at(last_idx);
		list.Del_at(last_idx);
		return rv;
	}
	public static Object Pop_or(List_adp list, Object or) {
		int list_len = list.Count(); if (list_len == 0) return or;
		int last_idx = list_len - 1;
		Object rv = list.Get_at(last_idx);
		list.Del_at(last_idx);
		return rv;
	}
	public static final    int Not_found = -1, Base1 = 1;
}