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Added a new macro BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT, which implements a noexcept operator. Also added explicit noexcept specification for the constexpr macro.

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Andrey Semashev
2014-06-01 22:06:23 +04:00
parent 83ffbc7678
commit 4652fa7415
4 changed files with 121 additions and 11 deletions
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doc/explicit_operator_bool.qbk
+2 -6
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@@ -5,7 +5,7 @@
/ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
/]
[article BOOST_EXPLICIT_OPERATOR_BOOL and BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL
[article BOOST_EXPLICIT_OPERATOR_BOOL, BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT and BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL
[quickbook 1.5]
[authors [Semashev, Andrey]]
[copyright 2013 Andrey Semashev]
@@ -20,7 +20,7 @@
[section Overview]
[/===============]
`BOOST_EXPLICIT_OPERATOR_BOOL()` and `BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()` are compatibility helper macros that expand to an explicit conversion operator to `bool`. For compilers not supporting explicit conversion operators introduced in C++11 the macros expand to a conversion operator that implements the [@http://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Safe_bool safe bool idiom]. In case if the compiler is not able to handle safe bool idiom well the macros expand to a regular conversion operator to `bool`.
`BOOST_EXPLICIT_OPERATOR_BOOL()`, `BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()` and `BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL()` are compatibility helper macros that expand to an explicit conversion operator to `bool`. For compilers not supporting explicit conversion operators introduced in C++11 the macros expand to a conversion operator that implements the [@http://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Safe_bool safe bool idiom]. In case if the compiler is not able to handle safe bool idiom well the macros expand to a regular conversion operator to `bool`.
[endsect]
@@ -62,7 +62,3 @@ Now `my_ptr` can be used in conditional expressions, similarly to a regular poin
* The macro was extracted from Boost.Log.
[endsect]