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| -rw-r--r-- | src/base/flags.hh | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/base/flags.hh b/src/base/flags.hh new file mode 100644 index 000000000..7cf6ef9c6 --- /dev/null +++ b/src/base/flags.hh @@ -0,0 +1,81 @@ +/* + * 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 any() const { return _flags; } + bool any(Type flags) const { return (_flags & flags); } + bool all() const { return (~_flags); } + bool all(Type flags) const { return (_flags & flags) != flags; } + bool none() const { return _flags == 0; } + bool none(Type flags) const { return (_flags & flags) == 0; } + bool exact(Type flags) const { return _flags = flags; } + void clear() { _flags = 0; } + void clear(Type flags) { _flags &= ~flags; } + void reset(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__ |