xercesc/util/BitOps.hpp

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *      http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 /*
0019  * $Id$
0020  */
0021
0022 #if !defined(XERCESC_INCLUDE_GUARD_BITOPS_HPP)
0023 #define XERCESC_INCLUDE_GUARD_BITOPS_HPP
0024
0025 #include <xercesc/util/XercesDefs.hpp>
0026
0027 XERCES_CPP_NAMESPACE_BEGIN
0028
0029 class XMLUTIL_EXPORT BitOps
0030 {
0031 public:
0032     // -----------------------------------------------------------------------
0033     //  Public static methods
0034     // -----------------------------------------------------------------------
0035     static inline XMLCh swapBytes(const XMLUInt16 toSwap)
0036     {
0037         //The mask is required to overcome a compiler error on solaris
0038         return XMLCh(((toSwap >> 8) | (toSwap << 8)) & 0xFFFF);
0039     }
0040
0041     static inline unsigned int swapBytes(const XMLUInt32 toSwap)
0042     {
0043         return
0044         (
0045             (toSwap >> 24)
0046             | (toSwap << 24)
0047             | ((toSwap & 0xFF00) << 8)
0048             | ((toSwap & 0xFF0000) >> 8)
0049         );
0050     }
0051
0052
0053
0054 protected :
0055     // -----------------------------------------------------------------------
0056     //  Unimplemented constructors and operators.  (These ought to be private,
0057     //                                  but that produces spurious compiler warnings
0058     //                                  on some platforms.)
0059     // -----------------------------------------------------------------------
0060     BitOps();
0061     BitOps(const BitOps&);
0062     BitOps& operator=(const BitOps&);
0063 };
0064
0065 XERCES_CPP_NAMESPACE_END
0066
0067 #endif