| /* |
| * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.types; |
| |
| import java.util.*; |
| |
| /** <P> This subinterface of Type provides accessors to deal with all |
| C integer types. The observation is that, according to the C |
| specification, there is no guarantee that the integer types of |
| char, short, int, and long will not all be of the same size, |
| meaning that it is incorrect to use any Java primitive type that |
| is too small to hold all of these values when talking about C |
| integer types, signed or unsigned. </P> |
| |
| <P> Therefore we use long, the largest Java primitive type, |
| universally to hold C integer field values (deciding that a |
| ubiquitous change to BigInteger is not currently advantageous). |
| Routines which read C integers from fields know the fields' sizes |
| and signedness and read the appropriate number of bytes and handle |
| sign- or zero- extension for signed and unsigned types, |
| respectively. Unfortunately, since long is a signed 64-bit |
| integer, there will be problems handling C's unsigned 64-bit |
| integers, but these problems must be dealt with by the user. </P> */ |
| public interface CIntegerType extends Type { |
| /** Is this integer type unsigned? */ |
| public boolean isUnsigned(); |
| |
| /** What is the maximum value of this type? Note that this will not |
| work properly for unsigned long longs. */ |
| public long maxValue(); |
| |
| /** What is the minimum value of this type? Note that this will not |
| work properly for unsigned long longs. */ |
| public long minValue(); |
| } |