coffee/better-enums
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Made enum.h build with exceptions disabled.

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Throwing functions are simply omitted.
This commit is contained in:
Anton Bachin 2015-06-12 16:37:15 -05:00
parent 7502ae3c18
commit 98232ee4fb
1 changed files with 41 additions and 3 deletions
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44
enum.h
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@ -20,6 +20,9 @@
# if __has_feature(cxx_constexpr) # if __has_feature(cxx_constexpr)
# define BETTER_ENUMS__HAVE_CONSTEXPR # define BETTER_ENUMS__HAVE_CONSTEXPR
# endif # endif
# if !defined(__EXCEPTIONS) || !__has_feature(cxx_exceptions)
# define BETTER_ENUMS__NO_EXCEPTIONS
# endif
# if (__clang_major__ > 2) || \ # if (__clang_major__ > 2) || \
(__clang_major__ == 2) && (__clang_minor__ >= 9) (__clang_major__ == 2) && (__clang_minor__ >= 9)
# define BETTER_ENUMS__HAVE_LONG_LONG # define BETTER_ENUMS__HAVE_LONG_LONG
@ -37,6 +40,9 @@
# define BETTER_ENUMS__HAVE_NEW_CHAR_TYPES # define BETTER_ENUMS__HAVE_NEW_CHAR_TYPES
# endif # endif
# endif # endif
# ifndef __EXCEPTIONS
# define BETTER_ENUMS__NO_EXCEPTIONS
# endif
# endif # endif
#endif #endif
@ -44,6 +50,9 @@
# if _MSC_VER >= 1600 # if _MSC_VER >= 1600
# define BETTER_ENUMS__HAVE_LONG_LONG # define BETTER_ENUMS__HAVE_LONG_LONG
# endif # endif
# ifndef _CPPUNWIND
# define BETTER_ENUMS__NO_EXCEPTIONS
# endif
#endif #endif
#ifdef BETTER_ENUMS_CONSTEXPR #ifdef BETTER_ENUMS_CONSTEXPR
@ -72,6 +81,12 @@
# define BETTER_ENUMS__NULLPTR NULL # define BETTER_ENUMS__NULLPTR NULL
#endif #endif
#ifndef BETTER_ENUMS__NO_EXCEPTIONS
# define BETTER_ENUMS__IF_EXCEPTIONS(x) x
#else
# define BETTER_ENUMS__IF_EXCEPTIONS(x)
#endif
#ifdef BETTER_ENUMS_MACRO_FILE #ifdef BETTER_ENUMS_MACRO_FILE
@ -303,12 +318,20 @@ _map_index(const Element *array, optional<std::size_t> index)
return index ? (CastTo)array[*index] : optional<CastTo>(); return index ? (CastTo)array[*index] : optional<CastTo>();
} }
BETTER_ENUMS__IF_EXCEPTIONS(
template <typename T> template <typename T>
BETTER_ENUMS__CONSTEXPR static T _or_throw(optional<T> maybe, BETTER_ENUMS__CONSTEXPR static T _or_throw(optional<T> maybe,
const char *message) const char *message)
{ {
return maybe ? *maybe : throw std::runtime_error(message); return maybe ? *maybe : throw std::runtime_error(message);
} }
)
template <typename T>
BETTER_ENUMS__CONSTEXPR static T* _or_null(optional<T*> maybe)
{
return maybe ? *maybe : BETTER_ENUMS__NULLPTR;
}
@ -587,26 +610,34 @@ class Enum { \
BETTER_ENUMS__CONSTEXPR const _underlying& _to_underlying() const \ BETTER_ENUMS__CONSTEXPR const _underlying& _to_underlying() const \
{ return _value; } \ { return _value; } \
\ \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR static Enum \ BETTER_ENUMS__CONSTEXPR static Enum \
_from_underlying(const _underlying &value); \ _from_underlying(const _underlying &value); \
) \
BETTER_ENUMS__CONSTEXPR static Enum \ BETTER_ENUMS__CONSTEXPR static Enum \
_from_underlying_unchecked(const _underlying &value); \ _from_underlying_unchecked(const _underlying &value); \
BETTER_ENUMS__CONSTEXPR static _optional \ BETTER_ENUMS__CONSTEXPR static _optional \
_from_underlying_nothrow(const _underlying &value); \ _from_underlying_nothrow(const _underlying &value); \
\ \
BETTER_ENUMS__CONSTEXPR _integral _to_integral() const; \ BETTER_ENUMS__CONSTEXPR _integral _to_integral() const; \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR static Enum _from_integral(_integral value); \ BETTER_ENUMS__CONSTEXPR static Enum _from_integral(_integral value); \
) \
BETTER_ENUMS__CONSTEXPR static Enum \ BETTER_ENUMS__CONSTEXPR static Enum \
_from_integral_unchecked(_integral value); \ _from_integral_unchecked(_integral value); \
BETTER_ENUMS__CONSTEXPR static _optional \ BETTER_ENUMS__CONSTEXPR static _optional \
_from_integral_nothrow(_integral value); \ _from_integral_nothrow(_integral value); \
\ \
ToStringConstexpr const char* _to_string() const; \ ToStringConstexpr const char* _to_string() const; \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR static Enum _from_string(const char *name); \ BETTER_ENUMS__CONSTEXPR static Enum _from_string(const char *name); \
) \
BETTER_ENUMS__CONSTEXPR static _optional \ BETTER_ENUMS__CONSTEXPR static _optional \
_from_string_nothrow(const char *name); \ _from_string_nothrow(const char *name); \
\ \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR static Enum _from_string_nocase(const char *name); \ BETTER_ENUMS__CONSTEXPR static Enum _from_string_nocase(const char *name); \
) \
BETTER_ENUMS__CONSTEXPR static _optional \ BETTER_ENUMS__CONSTEXPR static _optional \
_from_string_nocase_nothrow(const char *name); \ _from_string_nocase_nothrow(const char *name); \
\ \
@ -664,6 +695,7 @@ operator +(Enum::_enumerated enumerated) \
return (Enum)enumerated; \ return (Enum)enumerated; \
} \ } \
\ \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR inline Enum \ BETTER_ENUMS__CONSTEXPR inline Enum \
Enum::_from_underlying(const _underlying &value) \ Enum::_from_underlying(const _underlying &value) \
{ \ { \
@ -672,6 +704,7 @@ Enum::_from_underlying(const _underlying &value) \
_from_underlying_nothrow(value), \ _from_underlying_nothrow(value), \
#Enum "::_from_underlying: invalid argument"); \ #Enum "::_from_underlying: invalid argument"); \
} \ } \
) \
\ \
BETTER_ENUMS__CONSTEXPR inline Enum \ BETTER_ENUMS__CONSTEXPR inline Enum \
Enum::_from_underlying_unchecked(const _underlying &value) \ Enum::_from_underlying_unchecked(const _underlying &value) \
@ -698,12 +731,14 @@ Enum::_from_integral_unchecked(_integral value) \
return (_enumerated)value; \ return (_enumerated)value; \
} \ } \
\ \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_integral(_integral value) \ BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_integral(_integral value) \
{ \ { \
return \ return \
::better_enums::_or_throw(_from_integral_nothrow(value), \ ::better_enums::_or_throw(_from_integral_nothrow(value), \
#Enum "::_from_integral: invalid argument"); \ #Enum "::_from_integral: invalid argument"); \
} \ } \
) \
\ \
BETTER_ENUMS__CONSTEXPR inline Enum::_optional \ BETTER_ENUMS__CONSTEXPR inline Enum::_optional \
Enum::_from_integral_nothrow(_integral value) \ Enum::_from_integral_nothrow(_integral value) \
@ -714,19 +749,20 @@ Enum::_from_integral_nothrow(_integral value) \
ToStringConstexpr inline const char* Enum::_to_string() const \ ToStringConstexpr inline const char* Enum::_to_string() const \
{ \ { \
return \ return \
::better_enums::_or_throw( \ ::better_enums::_or_null( \
::better_enums::_map_index<const char*>( \ ::better_enums::_map_index<const char*>( \
BETTER_ENUMS__NS(Enum)::name_array(), \ BETTER_ENUMS__NS(Enum)::name_array(), \
_from_value_loop(CallInitialize(_value))), \ _from_value_loop(CallInitialize(_value)))); \
#Enum "::to_string: invalid enum value"); \
} \ } \
\ \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_string(const char *name) \ BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_string(const char *name) \
{ \ { \
return \ return \
::better_enums::_or_throw(_from_string_nothrow(name), \ ::better_enums::_or_throw(_from_string_nothrow(name), \
#Enum "::_from_string: invalid argument"); \ #Enum "::_from_string: invalid argument"); \
} \ } \
) \
\ \
BETTER_ENUMS__CONSTEXPR inline Enum::_optional \ BETTER_ENUMS__CONSTEXPR inline Enum::_optional \
Enum::_from_string_nothrow(const char *name) \ Enum::_from_string_nothrow(const char *name) \
@ -736,6 +772,7 @@ Enum::_from_string_nothrow(const char *name) \
BETTER_ENUMS__NS(Enum)::value_array, _from_string_loop(name)); \ BETTER_ENUMS__NS(Enum)::value_array, _from_string_loop(name)); \
} \ } \
\ \
BETTER_ENUMS__IF_EXCEPTIONS( \
BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_string_nocase(const char *name)\ BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_string_nocase(const char *name)\
{ \ { \
return \ return \
@ -743,6 +780,7 @@ BETTER_ENUMS__CONSTEXPR inline Enum Enum::_from_string_nocase(const char *name)\
_from_string_nocase_nothrow(name), \ _from_string_nocase_nothrow(name), \
#Enum "::_from_string_nocase: invalid argument"); \ #Enum "::_from_string_nocase: invalid argument"); \
} \ } \
) \
\ \
BETTER_ENUMS__CONSTEXPR inline Enum::_optional \ BETTER_ENUMS__CONSTEXPR inline Enum::_optional \
Enum::_from_string_nocase_nothrow(const char *name) \ Enum::_from_string_nocase_nothrow(const char *name) \