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gnosygnu_xowa/100_core/src/gplx/Byte_.java

64 lines
2.4 KiB

/*
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 Byte_ {
public static final String Cls_val_name = "byte";
public static final Class<?> Cls_ref_type = Byte.class;
public static final byte
Zero = 0
, Min_value = Byte.MIN_VALUE
, Max_value_127 = 127
, Val_128 = -128
, Val_255 = -1
;
public static byte cast(Object o) {try {return (Byte)o;} catch (Exception e) {throw Err_.new_type_mismatch_w_exc(e, byte.class, o);}}
public static byte parse(String raw) {return Byte.parseByte(raw);}
public static byte parse_or(String raw, byte or) {
if (raw == null) return or;
try {return parse(raw);}
catch (Exception e) {Err_.Noop(e); return or;}
}
public static byte By_int(int v) {return v > 127 ? (byte)(v - 256) : (byte)v;} // PERF?: (byte)(v & 0xff)
public static int To_int(byte v) {return v < 0 ? (int)v + 256 : v;}
public static String To_str(byte v) {return new Byte(v).toString();}
public static byte[] To_bry(byte v) {return new byte[] {v};}
public static boolean In(byte v, byte... ary) {
for (byte itm : ary)
if (v == itm) return true;
return false;
}
public static boolean Eq_many(byte v, byte... ary) {
for (byte itm : ary)
if (v != itm) return false;
return true;
}
public static int Compare(byte lhs, byte rhs) {
if (lhs == rhs) return CompareAble_.Same;
else if (lhs < rhs) return CompareAble_.Less;
else return CompareAble_.More;
}
public static byte[] Ary(byte... ary) {return ary;}
public static byte[] Ary_by_ints(int... ary) {
int ary_len = ary.length;
byte[] rv = new byte[ary_len];
for (int i = 0; i < ary_len; i++)
rv[i] = By_int(ary[i]);
return rv;
}
}