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Add docs for undocumented has_nothrow_destructor trait.

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jzmaddock
2015-06-10 17:10:41 +01:00
parent 79942e93cd
commit c0ca135b78
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29
doc/has_nothrow_destruct.qbk Normal file
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@ -0,0 +1,29 @@
[/
Copyright 2015 John Maddock.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt).
]
[section:has_nothrow_destruct has_nothrow_destructor]
template <class T>
struct has_nothrow_destructor : public __tof {};
__inherit If T is a (possibly cv-qualified) type with a non-throwing destructor
then inherits from __true_type, otherwise inherits from __false_type. Type `T`
must be a complete type.
__compat Either requires C++11 `noexcept` and `decltype` or else some (unspecified) help from the compiler.
You may test to see if the necessary support is available
by checking to see if `!defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_CXX11_NOEXCEPT)` is true.
__header ` #include <boost/type_traits/has_nothrow_copy.hpp>` or ` #include <boost/type_traits.hpp>`
[note
Note that destructors are assumed to be non-throwing unless they are explicitly marked otherwise with a `throw(something)` specification.
This is in line with the C++11 standard.
]
[endsect]

2
doc/type_traits.qbk
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@ -92,6 +92,7 @@
[def __has_nothrow_copy [link boost_typetraits.reference.has_nothrow_copy has_nothrow_copy]]
[def __has_nothrow_default_constructor [link boost_typetraits.reference.has_nothrow_constructor has_nothrow_default_constructor]]
[def __has_nothrow_copy_constructor [link boost_typetraits.reference.has_nothrow_copy has_nothrow_copy_constructor]]
[def __has_nothrow_destructor [link boost_typetraits.reference.has_nothrow_destruct has_nothrow_destructor]]
[def __is_nothrow_move_constructible [link boost_typetraits.reference.is_nothrow_move_constructible is_nothrow_move_constructible]]
[def __has_nothrow_assign [link boost_typetraits.reference.has_nothrow_assign has_nothrow_assign]]
[def __is_nothrow_move_assignable [link boost_typetraits.reference.is_nothrow_move_assignable is_nothrow_move_assignable]]
@ -231,6 +232,7 @@ that is the result of the transformation.
[include has_nothrow_assign.qbk]
[include has_nothrow_constructor.qbk]
[include has_nothrow_copy.qbk]
[include has_nothrow_destruct.qbk]
[section:has_nothrow_cp_cons has_nothrow_copy_constructor]
See __has_nothrow_copy.
[endsect]

3
doc/value_traits.qbk
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@ -126,6 +126,9 @@ The following templates describe the general properties of a type.
template <class T>
struct __has_nothrow_copy_constructor;
template <class T>
struct __has_nothrow_destructor;
template <class T>
struct __has_trivial_assign;