Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/boost/utility/declval.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/utility/declval.hpp | 41 |
1 files changed, 18 insertions, 23 deletions
diff --git a/3rdParty/Boost/src/boost/utility/declval.hpp b/3rdParty/Boost/src/boost/utility/declval.hpp index d74610c..a4ab2c8 100644 --- a/3rdParty/Boost/src/boost/utility/declval.hpp +++ b/3rdParty/Boost/src/boost/utility/declval.hpp @@ -1,49 +1,44 @@ -// common_type.hpp ---------------------------------------------------------// +// declval.hpp -------------------------------------------------------------// // Copyright 2010 Vicente J. Botet Escriba // Distributed under the Boost Software License, Version 1.0. // See http://www.boost.org/LICENSE_1_0.txt -#ifndef BOOST_TYPE_TRAITS_EXT_DECLVAL__HPP -#define BOOST_TYPE_TRAITS_EXT_DECLVAL__HPP +#ifndef BOOST_UTILITY_DECLVAL_HPP +#define BOOST_UTILITY_DECLVAL_HPP #include <boost/config.hpp> //----------------------------------------------------------------------------// #include <boost/type_traits/add_rvalue_reference.hpp> -//#include <boost/type_traits/add_lvalue_reference.hpp> //----------------------------------------------------------------------------// // // // C++03 implementation of // +// 20.2.4 Function template declval [declval] // // Written by Vicente J. Botet Escriba // -//~ 20.3.4 Function template declval [declval] -//~ 1 The library provides the function template declval to simplify the definition of expressions which occur as -//~ unevaluated operands. -//~ 2 Remarks: If this function is used, the program is ill-formed. -//~ 3 Remarks: The template parameter T of declval may be an incomplete type. -//~ [ Example: - -//~ template <class To, class From> -//~ decltype(static_cast<To>(declval<From>())) convert(From&&); - -//~ declares a function template convert which only participats in overloading if the type From can be -//~ explicitly converted to type To. For another example see class template common_type (20.7.6.6). —end -//~ example ] // // +// 1 The library provides the function template declval to simplify the +// definition of expressions which occur as unevaluated operands. +// 2 Remarks: If this function is used, the program is ill-formed. +// 3 Remarks: The template parameter T of declval may be an incomplete type. +// [ Example: +// +// template <class To, class From> +// decltype(static_cast<To>(declval<From>())) convert(From&&); +// +// declares a function template convert which only participates in overloading +// if the type From can be explicitly converted to type To. For another example +// see class template common_type (20.9.7.6). -end example ] //----------------------------------------------------------------------------// namespace boost { -//#if !defined(BOOST_NO_RVALUE_REFERENCES) template <typename T> typename add_rvalue_reference<T>::type declval() BOOST_NOEXCEPT; // as unevaluated operand -//#else -// template <typename T> -// typename add_lvalue_reference<T>::type declval() BOOST_NOEXCEPT; // as unevaluated operand -//#endif + } // namespace boost -#endif // BOOST_TYPE_TRAITS_EXT_DECLVAL__HPP +#endif // BOOST_UTILITY_DECLVAL_HPP |