FM / variant

/usr/include/boost/variant

Name	Size	Mode	Actions
detail/	-	0755	rm
apply_visitor.hpp	782	0644	edit dl rm
bad_visit.hpp	1193	0644	edit dl rm
get.hpp	11404	0644	edit dl rm
multivisitors.hpp	1048	0644	edit dl rm
polymorphic_get.hpp	11189	0644	edit dl rm
recursive_variant.hpp	6011	0644	edit dl rm
recursive_wrapper.hpp	3499	0644	edit dl rm
recursive_wrapper_fwd.hpp	5177	0644	edit dl rm
static_visitor.hpp	2605	0644	edit dl rm
variant.hpp	71048	0644	edit dl rm
variant_fwd.hpp	11825	0644	edit dl rm
visitor_ptr.hpp	2210	0644	edit dl rm

Edit: /usr/include/boost/variant/get.hpp (11404B)

#ifndef BOOST_VARIANT_GET_HPP
#define BOOST_VARIANT_GET_HPP

#include <exception>

#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/static_assert.hpp>
#include <boost/throw_exception.hpp>
#include <boost/utility/addressof.hpp>
#include <boost/variant/variant_fwd.hpp>
#include <boost/variant/detail/element_index.hpp>
#include <boost/variant/detail/move.hpp>

#include <boost/type_traits/add_reference.hpp>
#include <boost/type_traits/add_pointer.hpp>
#include <boost/type_traits/is_lvalue_reference.hpp>

namespace boost {

#if defined(BOOST_CLANG)
#   pragma clang diagnostic push
#   pragma clang diagnostic ignored "-Wweak-vtables"
#endif
//////////////////////////////////////////////////////////////////////////
// class bad_get
//
// The exception thrown in the event of a failed get of a value.
//
class BOOST_SYMBOL_VISIBLE bad_get
    : public std::exception
{
public: // std::exception implementation

const char * what() const BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE
    {
        return "boost::bad_get: "
               "failed value get using boost::get";
    }

};
#if defined(BOOST_CLANG)
#   pragma clang diagnostic pop
#endif

//////////////////////////////////////////////////////////////////////////
// function template get<T>
//
// Retrieves content of given variant object if content is of type T.
// Otherwise: pointer ver. returns 0; reference ver. throws bad_get.
//

namespace detail { namespace variant {

// (detail) class template get_visitor
//
// Generic static visitor that: if the value is of the specified type,
// returns a pointer to the value it visits; else a null pointer.
//
template <typename T>
struct get_visitor
{
private: // private typedefs

typedef typename add_pointer<T>::type pointer;
 typedef typename add_reference<T>::type reference;

public: // visitor typedefs

typedef pointer result_type;

public: // visitor interfaces

pointer operator()(reference operand) const BOOST_NOEXCEPT
    {
        return boost::addressof(operand);
    }

template <typename U>
 pointer operator()(const U&) const BOOST_NOEXCEPT
 {
 return static_cast<pointer>(0);
 }
};

}} // namespace detail::variant

#ifndef BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE
#   if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x0551))
#       define BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(t)
#   else
#       if defined(BOOST_NO_NULLPTR)
#           define BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(t)  \
            , t* = 0
#       else
#           define BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(t)  \
            , t* = nullptr
#       endif
#   endif
#endif

/////////////////////////////////////////////////////////////////////////////////////////////////////////////
// relaxed_get(variant) methods
//
template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_pointer::type
relaxed_get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 ) BOOST_NOEXCEPT
{
 typedef typename add_pointer::type U_ptr;
 if (!operand) return static_cast<U_ptr>(0);

detail::variant::get_visitor v;
 return operand->apply_visitor(v);
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_pointer<const U>::type
relaxed_get(
 const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 ) BOOST_NOEXCEPT
{
 typedef typename add_pointer<const U>::type U_ptr;
 if (!operand) return static_cast<U_ptr>(0);

detail::variant::get_visitor<const U> v;
 return operand->apply_visitor(v);
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_reference::type
relaxed_get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
 typedef typename add_pointer::type U_ptr;
 U_ptr result = relaxed_get(boost::addressof(operand));

if (!result)
        boost::throw_exception(bad_get());
    return *result;
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_reference<const U>::type
relaxed_get(
 const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
 typedef typename add_pointer<const U>::type U_ptr;
 U_ptr result = relaxed_get<const U>(boost::addressof(operand));

if (!result)
        boost::throw_exception(bad_get());
    return *result;
}

#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES

#if defined(BOOST_MSVC) && (_MSC_VER < 1900) // MSVC-2014 has fixed the incorrect diagnostics.
# pragma warning(push)
# pragma warning(disable: 4172) // returning address of local variable or temporary
#endif

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 U&&
relaxed_get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >&& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
 typedef typename add_pointer::type U_ptr;
 U_ptr result = relaxed_get(boost::addressof(operand));

if (!result)
 boost::throw_exception(bad_get());
 return static_cast<U&&>(*result);
}

#if defined(BOOST_MSVC) && (_MSC_VER < 1900)
# pragma warning(pop)
#endif

#endif

/////////////////////////////////////////////////////////////////////////////////////////////////////////////
// strict_get(variant) methods
//
template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_pointer::type
strict_get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 ) BOOST_NOEXCEPT
{
 BOOST_STATIC_ASSERT_MSG(
 (boost::detail::variant::holds_element<boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >, U >::value),
 "boost::variant does not contain specified type U, "
 "call to boost::get(boost::variant<T...>*) will always return NULL"
 );

return relaxed_get(operand);
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_pointer<const U>::type
strict_get(
 const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 ) BOOST_NOEXCEPT
{
 BOOST_STATIC_ASSERT_MSG(
 (boost::detail::variant::holds_element<boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >, const U >::value),
 "boost::variant does not contain specified type U, "
 "call to boost::get(const boost::variant<T...>*) will always return NULL"
 );

return relaxed_get(operand);
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_reference::type
strict_get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
 BOOST_STATIC_ASSERT_MSG(
 (boost::detail::variant::holds_element<boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >, U >::value),
 "boost::variant does not contain specified type U, "
 "call to boost::get(boost::variant<T...>&) will always throw boost::bad_get exception"
 );

return relaxed_get(operand);
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_reference<const U>::type
strict_get(
 const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
 BOOST_STATIC_ASSERT_MSG(
 (boost::detail::variant::holds_element<boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >, const U >::value),
 "boost::variant does not contain specified type U, "
 "call to boost::get(const boost::variant<T...>&) will always throw boost::bad_get exception"
 );

return relaxed_get(operand);
}

#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 U&&
strict_get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >&& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
 BOOST_STATIC_ASSERT_MSG(
 (!boost::is_lvalue_reference::value),
 "remove ampersand '&' from template type U in boost::get(boost::variant<T...>&&) "
 );

BOOST_STATIC_ASSERT_MSG(
 (boost::detail::variant::holds_element<boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >, U >::value),
 "boost::variant does not contain specified type U, "
 "call to boost::get(const boost::variant<T...>&) will always throw boost::bad_get exception"
 );

return relaxed_get(detail::variant::move(operand));
}
#endif

/////////////////////////////////////////////////////////////////////////////////////////////////////////////
// get(variant) methods
//

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_pointer::type
get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 ) BOOST_NOEXCEPT
{
#ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT
 return relaxed_get(operand);
#else
 return strict_get(operand);
#endif

}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_pointer<const U>::type
get(
 const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 ) BOOST_NOEXCEPT
{
#ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT
 return relaxed_get(operand);
#else
 return strict_get(operand);
#endif
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_reference::type
get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
#ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT
 return relaxed_get(operand);
#else
 return strict_get(operand);
#endif
}

template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 typename add_reference<const U>::type
get(
 const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
#ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT
 return relaxed_get(operand);
#else
 return strict_get(operand);
#endif
}

#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
 U&&
get(
 boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >&& operand
 BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
 )
{
#ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT
 return relaxed_get(detail::variant::move(operand));
#else
 return strict_get(detail::variant::move(operand));
#endif
}
#endif

} // namespace boost

#endif // BOOST_VARIANT_GET_HPP

//----------------------------------------------------------------------------- // boost variant/get.hpp header file // See http://www.boost.org for updates, documentation, and revision history. //----------------------------------------------------------------------------- // // Copyright (c) 2003 Eric Friedman, Itay Maman // Copyright (c) 2014-2020 Antony Polukhin // // 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_GET_HPP #define BOOST_VARIANT_GET_HPP #include #include #include #include #include #include #include #include #include #include #include #include namespace boost { #if defined(BOOST_CLANG) # pragma clang diagnostic push # pragma clang diagnostic ignored "-Wweak-vtables" #endif ////////////////////////////////////////////////////////////////////////// // class bad_get // // The exception thrown in the event of a failed get of a value. // class BOOST_SYMBOL_VISIBLE bad_get : public std::exception { public: // std::exception implementation const char * what() const BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE { return "boost::bad_get: " "failed value get using boost::get"; } }; #if defined(BOOST_CLANG) # pragma clang diagnostic pop #endif ////////////////////////////////////////////////////////////////////////// // function template get // // Retrieves content of given variant object if content is of type T. // Otherwise: pointer ver. returns 0; reference ver. throws bad_get. // namespace detail { namespace variant { // (detail) class template get_visitor // // Generic static visitor that: if the value is of the specified type, // returns a pointer to the value it visits; else a null pointer. // template struct get_visitor { private: // private typedefs typedef typename add_pointer::type pointer; typedef typename add_reference::type reference; public: // visitor typedefs typedef pointer result_type; public: // visitor interfaces pointer operator()(reference operand) const BOOST_NOEXCEPT { return boost::addressof(operand); } template pointer operator()(const U&) const BOOST_NOEXCEPT { return static_cast(0); } }; }} // namespace detail::variant #ifndef BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE # if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x0551)) # define BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(t) # else # if defined(BOOST_NO_NULLPTR) # define BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(t) \ , t* = 0 # else # define BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(t) \ , t* = nullptr # endif # endif #endif ///////////////////////////////////////////////////////////////////////////////////////////////////////////// // relaxed_get(variant) methods // template inline typename add_pointer::type relaxed_get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) BOOST_NOEXCEPT { typedef typename add_pointer::type U_ptr; if (!operand) return static_cast(0); detail::variant::get_visitor v; return operand->apply_visitor(v); } template inline typename add_pointer::type relaxed_get( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) BOOST_NOEXCEPT { typedef typename add_pointer::type U_ptr; if (!operand) return static_cast(0); detail::variant::get_visitor v; return operand->apply_visitor(v); } template inline typename add_reference::type relaxed_get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { typedef typename add_pointer::type U_ptr; U_ptr result = relaxed_get(boost::addressof(operand)); if (!result) boost::throw_exception(bad_get()); return *result; } template inline typename add_reference::type relaxed_get( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { typedef typename add_pointer::type U_ptr; U_ptr result = relaxed_get(boost::addressof(operand)); if (!result) boost::throw_exception(bad_get()); return *result; } #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES #if defined(BOOST_MSVC) && (_MSC_VER < 1900) // MSVC-2014 has fixed the incorrect diagnostics. # pragma warning(push) # pragma warning(disable: 4172) // returning address of local variable or temporary #endif template inline U&& relaxed_get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >&& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { typedef typename add_pointer::type U_ptr; U_ptr result = relaxed_get(boost::addressof(operand)); if (!result) boost::throw_exception(bad_get()); return static_cast(*result); } #if defined(BOOST_MSVC) && (_MSC_VER < 1900) # pragma warning(pop) #endif #endif ///////////////////////////////////////////////////////////////////////////////////////////////////////////// // strict_get(variant) methods // template inline typename add_pointer::type strict_get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) BOOST_NOEXCEPT { BOOST_STATIC_ASSERT_MSG( (boost::detail::variant::holds_element, U >::value), "boost::variant does not contain specified type U, " "call to boost::get(boost::variant*) will always return NULL" ); return relaxed_get(operand); } template inline typename add_pointer::type strict_get( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) BOOST_NOEXCEPT { BOOST_STATIC_ASSERT_MSG( (boost::detail::variant::holds_element, const U >::value), "boost::variant does not contain specified type U, " "call to boost::get(const boost::variant*) will always return NULL" ); return relaxed_get(operand); } template inline typename add_reference::type strict_get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { BOOST_STATIC_ASSERT_MSG( (boost::detail::variant::holds_element, U >::value), "boost::variant does not contain specified type U, " "call to boost::get(boost::variant&) will always throw boost::bad_get exception" ); return relaxed_get(operand); } template inline typename add_reference::type strict_get( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { BOOST_STATIC_ASSERT_MSG( (boost::detail::variant::holds_element, const U >::value), "boost::variant does not contain specified type U, " "call to boost::get(const boost::variant&) will always throw boost::bad_get exception" ); return relaxed_get(operand); } #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES template inline U&& strict_get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >&& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { BOOST_STATIC_ASSERT_MSG( (!boost::is_lvalue_reference::value), "remove ampersand '&' from template type U in boost::get(boost::variant&&) " ); BOOST_STATIC_ASSERT_MSG( (boost::detail::variant::holds_element, U >::value), "boost::variant does not contain specified type U, " "call to boost::get(const boost::variant&) will always throw boost::bad_get exception" ); return relaxed_get(detail::variant::move(operand)); } #endif ///////////////////////////////////////////////////////////////////////////////////////////////////////////// // get(variant) methods // template inline typename add_pointer::type get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) BOOST_NOEXCEPT { #ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT return relaxed_get(operand); #else return strict_get(operand); #endif } template inline typename add_pointer::type get( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) BOOST_NOEXCEPT { #ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT return relaxed_get(operand); #else return strict_get(operand); #endif } template inline typename add_reference::type get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { #ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT return relaxed_get(operand); #else return strict_get(operand); #endif } template inline typename add_reference::type get( const boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { #ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT return relaxed_get(operand); #else return strict_get(operand); #endif } #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES template inline U&& get( boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >&& operand BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U) ) { #ifdef BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT return relaxed_get(detail::variant::move(operand)); #else return strict_get(detail::variant::move(operand)); #endif } #endif } // namespace boost #endif // BOOST_VARIANT_GET_HPP