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-Added constexpr and noexcept specifiers to make the emulation technically closer to the actual enums.

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This commit is contained in:
Andrey Semashev
2016-01-01 19:02:48 +03:00
parent 181965f303
commit 6345b93198
1 changed files with 29 additions and 27 deletions
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56
include/boost/core/scoped_enum.hpp
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@ -43,7 +43,8 @@ namespace boost
* @throws No-throws. * @throws No-throws.
*/ */
template <typename UnderlyingType, typename EnumType> template <typename UnderlyingType, typename EnumType>
UnderlyingType underlying_cast(EnumType v) inline
BOOST_CONSTEXPR UnderlyingType underlying_cast(EnumType v) BOOST_NOEXCEPT
{ {
return v.get_underlying_value_(); return v.get_underlying_value_();
} }
@ -61,7 +62,7 @@ namespace boost
*/ */
template <typename EnumType> template <typename EnumType>
inline inline
typename EnumType::enum_type native_value(EnumType e) BOOST_CONSTEXPR typename EnumType::enum_type native_value(EnumType e) BOOST_NOEXCEPT
{ {
return e.get_native_value_(); return e.get_native_value_();
} }
@ -75,14 +76,15 @@ namespace boost
}; };
template <typename UnderlyingType, typename EnumType> template <typename UnderlyingType, typename EnumType>
UnderlyingType underlying_cast(EnumType v) inline
BOOST_CONSTEXPR UnderlyingType underlying_cast(EnumType v) BOOST_NOEXCEPT
{ {
return static_cast<UnderlyingType>(v); return static_cast<UnderlyingType>(v);
} }
template <typename EnumType> template <typename EnumType>
inline inline
EnumType native_value(EnumType e) BOOST_CONSTEXPR EnumType native_value(EnumType e) BOOST_NOEXCEPT
{ {
return e; return e;
} }
@ -96,7 +98,7 @@ namespace boost
#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS #ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
#define BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR \ #define BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR \
explicit operator underlying_type() const BOOST_NOEXCEPT { return get_underlying_value_(); } explicit BOOST_CONSTEXPR operator underlying_type() const BOOST_NOEXCEPT { return get_underlying_value_(); }
#else #else
@ -115,8 +117,8 @@ namespace boost
typedef void is_boost_scoped_enum_tag; \ typedef void is_boost_scoped_enum_tag; \
typedef UnderlyingType underlying_type; \ typedef UnderlyingType underlying_type; \
EnumType() BOOST_NOEXCEPT {} \ EnumType() BOOST_NOEXCEPT {} \
explicit EnumType(underlying_type v) BOOST_NOEXCEPT : v_(v) {} \ explicit BOOST_CONSTEXPR EnumType(underlying_type v) BOOST_NOEXCEPT : v_(v) {} \
underlying_type get_underlying_value_() const BOOST_NOEXCEPT { return v_; } \ BOOST_CONSTEXPR underlying_type get_underlying_value_() const BOOST_NOEXCEPT { return v_; } \
BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR \ BOOST_SCOPED_ENUM_UT_DECLARE_CONVERSION_OPERATOR \
private: \ private: \
underlying_type v_; \ underlying_type v_; \
@ -125,30 +127,30 @@ namespace boost
enum enum_type enum enum_type
#define BOOST_SCOPED_ENUM_DECLARE_END2() \ #define BOOST_SCOPED_ENUM_DECLARE_END2() \
enum_type get_native_value_() const BOOST_NOEXCEPT { return enum_type(v_); } \ BOOST_CONSTEXPR enum_type get_native_value_() const BOOST_NOEXCEPT { return enum_type(v_); } \
friend bool operator ==(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)==enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator ==(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)==enum_type(rhs.v_); } \
friend bool operator ==(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)==rhs; } \ friend BOOST_CONSTEXPR bool operator ==(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)==rhs; } \
friend bool operator ==(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs==enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator ==(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs==enum_type(rhs.v_); } \
friend bool operator !=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)!=enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator !=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)!=enum_type(rhs.v_); } \
friend bool operator !=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)!=rhs; } \ friend BOOST_CONSTEXPR bool operator !=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)!=rhs; } \
friend bool operator !=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs!=enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator !=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs!=enum_type(rhs.v_); } \
friend bool operator <(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator <(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<enum_type(rhs.v_); } \
friend bool operator <(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<rhs; } \ friend BOOST_CONSTEXPR bool operator <(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<rhs; } \
friend bool operator <(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs<enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator <(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs<enum_type(rhs.v_); } \
friend bool operator <=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<=enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator <=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<=enum_type(rhs.v_); } \
friend bool operator <=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<=rhs; } \ friend BOOST_CONSTEXPR bool operator <=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)<=rhs; } \
friend bool operator <=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs<=enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator <=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs<=enum_type(rhs.v_); } \
friend bool operator >(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator >(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>enum_type(rhs.v_); } \
friend bool operator >(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>rhs; } \ friend BOOST_CONSTEXPR bool operator >(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>rhs; } \
friend bool operator >(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs>enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator >(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs>enum_type(rhs.v_); } \
friend bool operator >=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>=enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator >=(self_type lhs, self_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>=enum_type(rhs.v_); } \
friend bool operator >=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>=rhs; } \ friend BOOST_CONSTEXPR bool operator >=(self_type lhs, enum_type rhs) BOOST_NOEXCEPT { return enum_type(lhs.v_)>=rhs; } \
friend bool operator >=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs>=enum_type(rhs.v_); } \ friend BOOST_CONSTEXPR bool operator >=(enum_type lhs, self_type rhs) BOOST_NOEXCEPT { return lhs>=enum_type(rhs.v_); } \
}; };
#define BOOST_SCOPED_ENUM_DECLARE_END(EnumType) \ #define BOOST_SCOPED_ENUM_DECLARE_END(EnumType) \
; \ ; \
EnumType(enum_type v) BOOST_NOEXCEPT : v_(v) {} \ BOOST_CONSTEXPR EnumType(enum_type v) BOOST_NOEXCEPT : v_(v) {} \
BOOST_SCOPED_ENUM_DECLARE_END2() BOOST_SCOPED_ENUM_DECLARE_END2()
/** /**