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/*
* Copyright (c) 2008 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
*/
#ifndef __BASE_FLAGS_HH__
#define __BASE_FLAGS_HH__
template <typename T>
class Flags
{
private:
T _flags;
public:
typedef T Type;
Flags() : _flags(0) {}
Flags(Type flags) : _flags(flags) {}
operator const Type() const { return _flags; }
template <typename U>
const Flags<T> &
operator=(const Flags<U> &flags)
{
_flags = flags._flags;
return *this;
}
const Flags<T> &
operator=(T flags)
{
_flags = flags;
return *this;
}
bool isSet() const { return _flags; }
bool isSet(Type flags) const { return (_flags & flags); }
bool allSet() const { return !(~_flags); }
bool allSet(Type flags) const { return (_flags & flags) == flags; }
bool noneSet() const { return _flags == 0; }
bool noneSet(Type flags) const { return (_flags & flags) == 0; }
void clear() { _flags = 0; }
void clear(Type flags) { _flags &= ~flags; }
void set(Type flags) { _flags |= flags; }
void set(Type f, bool val) { _flags = (_flags & ~f) | (val ? f : 0); }
void
update(Type flags, Type mask)
{
_flags = (_flags & ~mask) | (flags & mask);
}
};
#endif // __BASE_FLAGS_HH__
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