/*
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;
public class Object_ {
	public static final String Cls_val_name = "Object";
	public static final Object[] Ary_empty = new Object[0];
	public static Object[] Ary(Object... ary) {return ary;}
	public static Object[] Ary_add(Object[] lhs, Object[] rhs) {
		int lhs_len = lhs.length, rhs_len = rhs.length;
		if		(lhs_len == 0) return rhs;
		else if (rhs_len == 0) return lhs;
		int rv_len = lhs_len + rhs_len;
		Object[] rv = new Object[rv_len];
		for (int i = 0; i < lhs_len; ++i)
			rv[i] = lhs[i];
		for (int i = lhs_len; i < rv_len; ++i)
			rv[i] = rhs[i - lhs_len];
		return rv;
	}
	public static boolean Eq(Object lhs, Object rhs) {
		if		(lhs == null && rhs == null)	return true;
		else if (lhs == null || rhs == null)	return false;
		else									return lhs.equals(rhs);		
	}
	public static String Xto_str_or(Object v, String or)		{return v == null ? or					: ToString_lang(v);}
	public static String Xto_str_strict_or_null(Object v)		{return v == null ? null				: ToString_lang(v);}
	public static String Xto_str_strict_or_null_mark(Object v)	{return v == null ? String_.Null_mark	: ToString_lang(v);}
	public static String Xto_str_strict_or_empty(Object v)		{return v == null ? String_.Empty		: ToString_lang(v);}
	private static String ToString_lang(Object v) {
		Class<?> c = v.getClass();
		if		(Type_adp_.Eq(c, String_.Cls_ref_type))		return (String)v;
		else if	(Type_adp_.Eq(c, Bry_.Cls_ref_type))		return String_.new_u8((byte[])v);
		else												return v.toString();	
	}
	public static String Xto_str_loose_or(Object v, String or) {	// tries to pretty-print doubles; also standardizes true/false; DATE:2014-07-14
		if (v == null) return null;
		Class<?> c = Type_adp_.ClassOf_obj(v);
		if		(Type_adp_.Eq(c, String_.Cls_ref_type))		return (String)v;
		else if	(Type_adp_.Eq(c, Bry_.Cls_ref_type))		return String_.new_u8((byte[])v);
		else if (Type_adp_.Eq(c, Bool_.Cls_ref_type))		return Bool_.cast(v) ? Bool_.True_str : Bool_.False_str;	// always return "true" / "false"
		else if	(Type_adp_.Eq(c, Double_.Cls_ref_type))		return Double_.To_str_loose(Double_.cast(v));
		else												return v.toString();	
	}
	public static final Object Null = null;
	public static final byte[] Bry__null = Bry_.new_a7("null");
}