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Added BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS, BOOST_DEFAULTED_FUNCTION and BOOST_DELETED_FUNCTION macros for portable declaration of defaulted and deleted functions.

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[SVN r84798]
This commit is contained in:
Andrey Semashev
2013-06-15 17:34:04 +00:00
parent 75d100a4ac
commit 411399ec60
3 changed files with 90 additions and 0 deletions
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5
include/boost/config/compiler/gcc.hpp
View File

@@ -217,6 +217,11 @@
# define BOOST_NO_SFINAE_EXPR
#endif
// GCC 4.5 forbids declaration of defaulted functions in private or protected sections
#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && (__GNUC__ == 4 && __GNUC_MINOR__ <= 5)
# define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
#endif
// C++0x features in 4.5.0 and later
//
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 5) || !defined(__GXX_EXPERIMENTAL_CXX0X__)

30
include/boost/config/suffix.hpp
View File

@@ -689,6 +689,36 @@ namespace std{ using ::type_info; }
# define BOOST_ALIGNMENT(x)
#endif
// Defaulted and deleted function declaration helpers
// These macros are intended to be inside a class definition.
// BOOST_DEFAULTED_FUNCTION accepts the function declaration and its
// body, which will be used if the compiler doesn't support defaulted functions.
// BOOST_DELETED_FUNCTION only accepts the function declaration. It
// will expand to a private function declaration, if the compiler doesn't support
// deleted functions. Because of this it is recommended to use BOOST_DELETED_FUNCTION
// in the end of the class definition.
//
// class my_class
// {
// public:
// // Default-constructible
// BOOST_DEFAULTED_FUNCTION(my_class(), {})
// // Copying prohibited
// BOOST_DELETED_FUNCTION(my_class(my_class const&))
// BOOST_DELETED_FUNCTION(my_class& operator= (my_class const&))
// };
//
#if !(defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS))
# define BOOST_DEFAULTED_FUNCTION(fun, body) fun = default;
#else
# define BOOST_DEFAULTED_FUNCTION(fun, body) fun body
#endif
#if !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
# define BOOST_DELETED_FUNCTION(fun) fun = delete;
#else
# define BOOST_DELETED_FUNCTION(fun) private: fun;
#endif
//
// Set BOOST_NO_DECLTYPE_N3276 when BOOST_NO_DECLTYPE is defined