diff options
author | Remko Tronçon <git@el-tramo.be> | 2010-08-08 18:41:53 (GMT) |
---|---|---|
committer | Remko Tronçon <git@el-tramo.be> | 2010-08-08 18:41:53 (GMT) |
commit | 19df82042f44c201e5a2821b4fa35465e33a1c90 (patch) | |
tree | 1746bddfa31ce2a6488ef5186036a049a255c9da /3rdParty/Boost/src/boost/variant/visitor_ptr.hpp | |
parent | 4a5a0977f661bf5c7c34ee7aa48b35073a682203 (diff) | |
download | swift-contrib-19df82042f44c201e5a2821b4fa35465e33a1c90.zip swift-contrib-19df82042f44c201e5a2821b4fa35465e33a1c90.tar.bz2 |
Added XEP-0004 data forms parsing & serializing.
Diffstat (limited to '3rdParty/Boost/src/boost/variant/visitor_ptr.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/variant/visitor_ptr.hpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/variant/visitor_ptr.hpp b/3rdParty/Boost/src/boost/variant/visitor_ptr.hpp new file mode 100644 index 0000000..b49a972 --- /dev/null +++ b/3rdParty/Boost/src/boost/variant/visitor_ptr.hpp @@ -0,0 +1,116 @@ +//----------------------------------------------------------------------------- +// boost variant/visitor_ptr.hpp header file +// See http://www.boost.org for updates, documentation, and revision history. +//----------------------------------------------------------------------------- +// +// Copyright (c) 2002-2003 +// Eric Friedman +// +// 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) + +#ifndef BOOST_VARIANT_VISITOR_PTR_HPP +#define BOOST_VARIANT_VISITOR_PTR_HPP + +#include "boost/variant/bad_visit.hpp" +#include "boost/variant/static_visitor.hpp" + +#include "boost/mpl/eval_if.hpp" +#include "boost/mpl/identity.hpp" +#include "boost/type_traits/add_reference.hpp" +#include "boost/type_traits/is_reference.hpp" +#include "boost/type_traits/is_void.hpp" + +namespace boost { + +////////////////////////////////////////////////////////////////////////// +// function template visitor_ptr +// +// Adapts a function pointer for use as visitor capable of handling +// values of a single type. Throws bad_visit if inappropriately applied. +// +template <typename T, typename R> +class visitor_ptr_t + : public static_visitor<R> +{ +private: // representation + + typedef R (*visitor_t)(T); + + visitor_t visitor_; + +public: // typedefs + + typedef R result_type; + +private: // private typedefs + + typedef typename mpl::eval_if< + is_reference<T> + , mpl::identity<T> + , add_reference<const T> + >::type argument_fwd_type; + +public: // structors + + explicit visitor_ptr_t(visitor_t visitor) + : visitor_(visitor) + { + } + +public: // static visitor interfaces + + template <typename U> + result_type operator()(const U&) const + { + throw bad_visit(); + } + +#if !defined(BOOST_NO_VOID_RETURNS) + +public: // static visitor interfaces, cont. + + result_type operator()(argument_fwd_type operand) const + { + return visitor_(operand); + } + +#else // defined(BOOST_NO_VOID_RETURNS) + +private: // helpers, for static visitor interfaces (below) + + result_type execute_impl(argument_fwd_type operand, mpl::false_) const + { + return visitor_(operand); + } + + BOOST_VARIANT_AUX_RETURN_VOID_TYPE + execute_impl(argument_fwd_type operand, mpl::true_) const + { + visitor_(operand); + BOOST_VARIANT_AUX_RETURN_VOID; + } + +public: // static visitor interfaces, cont. + + BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(result_type) + operator()(argument_fwd_type operand) const + { + typedef typename is_void<result_type>::type has_void_result; + return execute_impl(operand, has_void_result()); + } + +#endif // BOOST_NO_VOID_RETURNS workaround + +}; + +template <typename R, typename T> +inline visitor_ptr_t<T,R> visitor_ptr(R (*visitor)(T)) +{ + return visitor_ptr_t<T,R>(visitor); +} + +} // namespace boost + +#endif// BOOST_VISITOR_VISITOR_PTR_HPP |