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slight improvements to the bitfield_flag type

This commit is contained in:
arvidn 2017-07-16 08:34:37 -07:00 committed by Arvid Norberg
parent 021c2100d7
commit d32341b986
1 changed files with 26 additions and 12 deletions
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38
include/libtorrent/flags.hpp
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@ -34,6 +34,7 @@ POSSIBILITY OF SUCH DAMAGE.
#define TORRENT_FLAGS_HPP_INCLUDED
#include <type_traits> // for enable_if
#include <iosfwd>
namespace libtorrent {
namespace flags {
@ -47,50 +48,55 @@ struct bitfield_flag
constexpr bitfield_flag(bitfield_flag const& rhs) noexcept = default;
constexpr bitfield_flag(bitfield_flag&& rhs) noexcept = default;
constexpr bitfield_flag() noexcept : m_val(0) {}
explicit constexpr bitfield_flag(UnderlyingType val) : m_val(val) {}
explicit constexpr operator UnderlyingType() const { return m_val; }
explicit constexpr operator bool() const { return m_val != 0; }
#ifdef TORRENT_NO_DEPRECATE
explicit constexpr bitfield_flag(UnderlyingType val) noexcept : m_val(val) {}
explicit constexpr operator UnderlyingType() const noexcept { return m_val; }
#else
constexpr bitfield_flag(UnderlyingType val) noexcept : m_val(val) {}
constexpr operator UnderlyingType() const noexcept { return m_val; }
#endif
explicit constexpr operator bool() const noexcept { return m_val != 0; }
bool constexpr operator==(bitfield_flag const f) const
bool constexpr operator==(bitfield_flag const f) const noexcept
{ return m_val == f.m_val; }
bool constexpr operator!=(bitfield_flag const f) const
bool constexpr operator!=(bitfield_flag const f) const noexcept
{ return m_val != f.m_val; }
bitfield_flag& operator|=(bitfield_flag const f)
bitfield_flag& operator|=(bitfield_flag const f) noexcept
{
m_val |= f.m_val;
return *this;
}
bitfield_flag& operator&=(bitfield_flag const f)
bitfield_flag& operator&=(bitfield_flag const f) noexcept
{
m_val &= f.m_val;
return *this;
}
bitfield_flag& operator^=(bitfield_flag const f)
bitfield_flag& operator^=(bitfield_flag const f) noexcept
{
m_val ^= f.m_val;
return *this;
}
constexpr friend bitfield_flag operator|(bitfield_flag const lhs, bitfield_flag const rhs)
constexpr friend bitfield_flag operator|(bitfield_flag const lhs, bitfield_flag const rhs) noexcept
{
return bitfield_flag(lhs.m_val | rhs.m_val);
}
constexpr friend bitfield_flag operator&(bitfield_flag const lhs, bitfield_flag const rhs)
constexpr friend bitfield_flag operator&(bitfield_flag const lhs, bitfield_flag const rhs) noexcept
{
return bitfield_flag(lhs.m_val & rhs.m_val);
}
constexpr friend bitfield_flag operator^(bitfield_flag const lhs, bitfield_flag const rhs)
constexpr friend bitfield_flag operator^(bitfield_flag const lhs, bitfield_flag const rhs) noexcept
{
return bitfield_flag(lhs.m_val ^ rhs.m_val);
}
constexpr bitfield_flag operator~() const
constexpr bitfield_flag operator~() const noexcept
{
return bitfield_flag(~m_val);
}
@ -101,8 +107,16 @@ private:
UnderlyingType m_val;
};
#if TORRENT_USE_IOSTREAM
template <typename T, typename Tag>
std::ostream& operator<<(std::ostream& os, bitfield_flag<T, Tag> val)
{ return os << static_cast<T>(val); }
#endif
} // flags
} // libtorrent
#undef ENUM_OPERATOR
#endif