// This header intentionally has no include guards.
//
-// Copyright (c) 2001-2009 Peter Dimov
+// Copyright (c) 2001-2009, 2012 Peter Dimov
//
// 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
-#if ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+#if !defined( BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS ) && !defined( BOOST_NO_CXX11_NULLPTR )
- operator bool () const
+ explicit operator bool () const BOOST_NOEXCEPT
+ {
+ return px != 0;
+ }
+
+#elif ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+
+ operator bool () const BOOST_NOEXCEPT
{
return px != 0;
}
typedef void (*unspecified_bool_type)( this_type*** );
- operator unspecified_bool_type() const // never throws
+ operator unspecified_bool_type() const BOOST_NOEXCEPT
{
return px == 0? 0: unspecified_bool;
}
( defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 304) ) || \
( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x590) )
- typedef T * (this_type::*unspecified_bool_type)() const;
+ typedef element_type * (this_type::*unspecified_bool_type)() const;
- operator unspecified_bool_type() const // never throws
+ operator unspecified_bool_type() const BOOST_NOEXCEPT
{
return px == 0? 0: &this_type::get;
}
#else
- typedef T * this_type::*unspecified_bool_type;
+ typedef element_type * this_type::*unspecified_bool_type;
- operator unspecified_bool_type() const // never throws
+ operator unspecified_bool_type() const BOOST_NOEXCEPT
{
return px == 0? 0: &this_type::px;
}
#endif
// operator! is redundant, but some compilers need it
- bool operator! () const // never throws
+ bool operator! () const BOOST_NOEXCEPT
{
return px == 0;
}