1.1 --- a/epoc32/include/stdapis/boost/cast.hpp Wed Mar 31 12:27:01 2010 +0100
1.2 +++ b/epoc32/include/stdapis/boost/cast.hpp Wed Mar 31 12:33:34 2010 +0100
1.3 @@ -1,51 +1,107 @@
1.4 -// © Copyright Fernando Luis Cacciola Carballal 2000-2004
1.5 -// Use, modification, and distribution is subject to the Boost Software
1.6 -// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
1.7 -// http://www.boost.org/LICENSE_1_0.txt)
1.8 +// boost cast.hpp header file ----------------------------------------------//
1.9
1.10 -// See library home page at http://www.boost.org/libs/numeric/conversion
1.11 +// (C) Copyright Kevlin Henney and Dave Abrahams 1999.
1.12 +// Distributed under the Boost
1.13 +// Software License, Version 1.0. (See accompanying file
1.14 +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
1.15 +
1.16 +// See http://www.boost.org/libs/conversion for Documentation.
1.17 +
1.18 +// Revision History
1.19 +// 23 JUn 05 numeric_cast removed and redirected to the new verion (Fernando Cacciola)
1.20 +// 02 Apr 01 Removed BOOST_NO_LIMITS workarounds and included
1.21 +// <boost/limits.hpp> instead (the workaround did not
1.22 +// actually compile when BOOST_NO_LIMITS was defined in
1.23 +// any case, so we loose nothing). (John Maddock)
1.24 +// 21 Jan 01 Undid a bug I introduced yesterday. numeric_cast<> never
1.25 +// worked with stock GCC; trying to get it to do that broke
1.26 +// vc-stlport.
1.27 +// 20 Jan 01 Moved BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS to config.hpp.
1.28 +// Removed unused BOOST_EXPLICIT_TARGET macro. Moved
1.29 +// boost::detail::type to boost/type.hpp. Made it compile with
1.30 +// stock gcc again (Dave Abrahams)
1.31 +// 29 Nov 00 Remove nested namespace cast, cleanup spacing before Formal
1.32 +// Review (Beman Dawes)
1.33 +// 19 Oct 00 Fix numeric_cast for floating-point types (Dave Abrahams)
1.34 +// 15 Jul 00 Suppress numeric_cast warnings for GCC, Borland and MSVC
1.35 +// (Dave Abrahams)
1.36 +// 30 Jun 00 More MSVC6 wordarounds. See comments below. (Dave Abrahams)
1.37 +// 28 Jun 00 Removed implicit_cast<>. See comment below. (Beman Dawes)
1.38 +// 27 Jun 00 More MSVC6 workarounds
1.39 +// 15 Jun 00 Add workarounds for MSVC6
1.40 +// 2 Feb 00 Remove bad_numeric_cast ";" syntax error (Doncho Angelov)
1.41 +// 26 Jan 00 Add missing throw() to bad_numeric_cast::what(0 (Adam Levar)
1.42 +// 29 Dec 99 Change using declarations so usages in other namespaces work
1.43 +// correctly (Dave Abrahams)
1.44 +// 23 Sep 99 Change polymorphic_downcast assert to also detect M.I. errors
1.45 +// as suggested Darin Adler and improved by Valentin Bonnard.
1.46 +// 2 Sep 99 Remove controversial asserts, simplify, rename.
1.47 +// 30 Aug 99 Move to cast.hpp, replace value_cast with numeric_cast,
1.48 +// place in nested namespace.
1.49 +// 3 Aug 99 Initial version
1.50 +
1.51 +#ifndef BOOST_CAST_HPP
1.52 +#define BOOST_CAST_HPP
1.53 +
1.54 +# include <boost/config.hpp>
1.55 +# include <boost/assert.hpp>
1.56 +# include <typeinfo>
1.57 +# include <boost/type.hpp>
1.58 +# include <boost/limits.hpp>
1.59 +# include <boost/detail/select_type.hpp>
1.60 +
1.61 +// It has been demonstrated numerous times that MSVC 6.0 fails silently at link
1.62 +// time if you use a template function which has template parameters that don't
1.63 +// appear in the function's argument list.
1.64 //
1.65 -// Contact the author at: fernando_cacciola@hotmail.com
1.66 -//
1.67 -//
1.68 -// Revision History
1.69 -//
1.70 -// 19 Nov 2001 Syntatic changes as suggested by Darin Adler (Fernando Cacciola)
1.71 -// 08 Nov 2001 Fixes to accommodate MSVC (Fernando Cacciola)
1.72 -// 04 Nov 2001 Fixes to accommodate gcc2.92 (Fernando Cacciola)
1.73 -// 30 Oct 2001 Some fixes suggested by Daryle Walker (Fernando Cacciola)
1.74 -// 25 Oct 2001 Initial boostification (Fernando Cacciola)
1.75 -// 23 Jan 2004 Inital add to cvs (post review)s
1.76 -//
1.77 -#ifndef BOOST_NUMERIC_CONVERSION_CAST_25OCT2001_HPP
1.78 -#define BOOST_NUMERIC_CONVERSION_CAST_25OCT2001_HPP
1.79 -
1.80 -#include <boost/detail/workaround.hpp>
1.81 -
1.82 -#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582))
1.83 -
1.84 -# include<boost/numeric/conversion/detail/old_numeric_cast.hpp>
1.85 -
1.86 -#else
1.87 -
1.88 -#include <boost/type.hpp>
1.89 -#include <boost/numeric/conversion/converter.hpp>
1.90 +// TODO: Add this to config.hpp?
1.91 +# if defined(BOOST_MSVC) && BOOST_MSVC < 1300
1.92 +# define BOOST_EXPLICIT_DEFAULT_TARGET , ::boost::type<Target>* = 0
1.93 +# else
1.94 +# define BOOST_EXPLICIT_DEFAULT_TARGET
1.95 +# endif
1.96
1.97 namespace boost
1.98 {
1.99 - template<typename Target, typename Source>
1.100 - inline
1.101 - Target numeric_cast ( Source arg )
1.102 - {
1.103 - typedef boost::numeric::converter<Target,Source> Converter ;
1.104 - return Converter::convert(arg);
1.105 - }
1.106 +// See the documentation for descriptions of how to choose between
1.107 +// static_cast<>, dynamic_cast<>, polymorphic_cast<> and polymorphic_downcast<>
1.108
1.109 - using numeric::bad_numeric_cast;
1.110 +// polymorphic_cast --------------------------------------------------------//
1.111 +
1.112 + // Runtime checked polymorphic downcasts and crosscasts.
1.113 + // Suggested in The C++ Programming Language, 3rd Ed, Bjarne Stroustrup,
1.114 + // section 15.8 exercise 1, page 425.
1.115 +
1.116 + template <class Target, class Source>
1.117 + inline Target polymorphic_cast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
1.118 + {
1.119 + Target tmp = dynamic_cast<Target>(x);
1.120 + if ( tmp == 0 ) throw std::bad_cast();
1.121 + return tmp;
1.122 + }
1.123 +
1.124 +// polymorphic_downcast ----------------------------------------------------//
1.125 +
1.126 + // BOOST_ASSERT() checked polymorphic downcast. Crosscasts prohibited.
1.127 +
1.128 + // WARNING: Because this cast uses BOOST_ASSERT(), it violates
1.129 + // the One Definition Rule if used in multiple translation units
1.130 + // where BOOST_DISABLE_ASSERTS, BOOST_ENABLE_ASSERT_HANDLER
1.131 + // NDEBUG are defined inconsistently.
1.132 +
1.133 + // Contributed by Dave Abrahams
1.134 +
1.135 + template <class Target, class Source>
1.136 + inline Target polymorphic_downcast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
1.137 + {
1.138 + BOOST_ASSERT( dynamic_cast<Target>(x) == x ); // detect logic error
1.139 + return static_cast<Target>(x);
1.140 + }
1.141 +
1.142 +# undef BOOST_EXPLICIT_DEFAULT_TARGET
1.143
1.144 } // namespace boost
1.145
1.146 -#endif
1.147 +# include <boost/numeric/conversion/cast.hpp>
1.148
1.149 -
1.150 -#endif
1.151 +#endif // BOOST_CAST_HPP