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Norman Lansing
2026-01-28 19:08:51 -05:00
commit ecb33115bf
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// declval.hpp -------------------------------------------------------------//
// Copyright 2010 Vicente J. Botet Escriba
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
#ifndef BOOST_UTILITY_DECLVAL_HPP
#define BOOST_UTILITY_DECLVAL_HPP
#include <boost/type_traits/declval.hpp>
#endif // BOOST_UTILITY_DECLVAL_HPP

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// Boost result_of library
// Copyright Douglas Gregor 2004. Use, modification and
// distribution is subject to 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)
// Copyright Daniel Walker, Eric Niebler, Michel Morin 2008-2012.
// Use, modification and distribution is subject to 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)
// For more information, see http://www.boost.org/libs/utility
#if !defined(BOOST_PP_IS_ITERATING)
# error Boost result_of - do not include this file!
#endif
// CWPro8 requires an argument in a function type specialization
#if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3002)) && BOOST_PP_ITERATION() == 0
# define BOOST_RESULT_OF_ARGS void
#else
# define BOOST_RESULT_OF_ARGS BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)
#endif
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of<F(BOOST_RESULT_OF_ARGS)>
: mpl::if_<
mpl::or_< is_pointer<F>, is_member_function_pointer<F> >
, boost::detail::tr1_result_of_impl<
typename remove_cv<F>::type,
typename remove_cv<F>::type(BOOST_RESULT_OF_ARGS),
(boost::detail::has_result_type<F>::value)>
, boost::detail::tr1_result_of_impl<
F,
F(BOOST_RESULT_OF_ARGS),
(boost::detail::has_result_type<F>::value)> >::type { };
#endif
#ifdef BOOST_RESULT_OF_USE_DECLTYPE
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of<F(BOOST_RESULT_OF_ARGS)>
: detail::cpp0x_result_of<F(BOOST_RESULT_OF_ARGS)> { };
#endif // BOOST_RESULT_OF_USE_DECLTYPE
#ifdef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of<F(BOOST_RESULT_OF_ARGS)>
: mpl::if_<mpl::or_<detail::has_result_type<F>, detail::has_result<F> >,
tr1_result_of<F(BOOST_RESULT_OF_ARGS)>,
detail::cpp0x_result_of<F(BOOST_RESULT_OF_ARGS)> >::type { };
#endif // BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
#if defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)
namespace detail {
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct cpp0x_result_of<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))>
: mpl::if_<
is_member_function_pointer<F>
, detail::tr1_result_of_impl<
typename remove_cv<F>::type,
typename remove_cv<F>::type(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false
>
, detail::cpp0x_result_of_impl<
F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))
>
>::type
{};
#ifdef BOOST_NO_SFINAE_EXPR
template<typename F>
struct BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION());
template<typename R BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), typename T)>
struct BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION())<R(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), T))> {
R operator()(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), T)) const;
typedef result_of_private_type const &(*pfn_t)(...);
operator pfn_t() const volatile;
};
template<typename F>
struct BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION());
template<typename F>
struct BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION())<F *>
: BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION())<F>
{};
template<typename F>
struct BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION())<F &>
: BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION())<F>
{};
template<typename F>
struct BOOST_PP_CAT(result_of_select_call_wrapper_type_, BOOST_PP_ITERATION())
: mpl::eval_if<
is_class<typename remove_reference<F>::type>,
result_of_wrap_callable_class<F>,
mpl::identity<BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION())<typename remove_cv<F>::type> >
>
{};
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), typename T)>
struct BOOST_PP_CAT(result_of_is_callable_, BOOST_PP_ITERATION()) {
typedef typename BOOST_PP_CAT(result_of_select_call_wrapper_type_, BOOST_PP_ITERATION())<F>::type wrapper_t;
static const bool value = (
sizeof(result_of_no_type) == sizeof(detail::result_of_is_private_type(
(boost::declval<wrapper_t>()(BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)), result_of_weird_type())
))
);
typedef mpl::bool_<value> type;
};
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), true>
: lazy_enable_if<
BOOST_PP_CAT(result_of_is_callable_, BOOST_PP_ITERATION())<F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), T)>
, cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false>
>
{};
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false>
{
typedef decltype(
boost::declval<F>()(
BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)
)
) type;
};
#else // BOOST_NO_SFINAE_EXPR
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)),
typename result_of_always_void<decltype(
boost::declval<F>()(
BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)
)
)>::type> {
typedef decltype(
boost::declval<F>()(
BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)
)
) type;
};
#endif // BOOST_NO_SFINAE_EXPR
} // namespace detail
#else // defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct result_of<F(BOOST_RESULT_OF_ARGS)>
: tr1_result_of<F(BOOST_RESULT_OF_ARGS)> { };
#endif
#endif // defined(BOOST_RESULT_OF_USE_DECLTYPE)
#undef BOOST_RESULT_OF_ARGS
#if BOOST_PP_ITERATION() >= 1
namespace detail {
template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of_impl<R (*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
{
typedef R type;
};
template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of_impl<R (&)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
{
typedef R type;
};
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T)),
FArgs, false>
{
typedef R type;
};
template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
const,
FArgs, false>
{
typedef R type;
};
template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
volatile,
FArgs, false>
{
typedef R type;
};
template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
struct tr1_result_of_impl<R (T0::*)
(BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
const volatile,
FArgs, false>
{
typedef R type;
};
#endif
}
#endif

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/*
* Copyright (c) 2014 Glen Fernandes
*
* 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_UTILITY_ENABLE_IF_HPP
#define BOOST_UTILITY_ENABLE_IF_HPP
// The header file at this path is deprecated;
// use boost/core/enable_if.hpp instead.
#include <boost/core/enable_if.hpp>
#endif

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// Boost result_of library
// Copyright Douglas Gregor 2004. Use, modification and
// distribution is subject to 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)
// For more information, see http://www.boost.org/libs/utility
#ifndef BOOST_RESULT_OF_HPP
#define BOOST_RESULT_OF_HPP
#include <boost/config.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/iteration/iterate.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/enum_trailing_params.hpp>
#include <boost/preprocessor/repetition/enum_binary_params.hpp>
#include <boost/preprocessor/repetition/enum_shifted_params.hpp>
#include <boost/preprocessor/facilities/intercept.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/mpl/has_xxx.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/or.hpp>
#include <boost/type_traits/is_class.hpp>
#include <boost/type_traits/is_pointer.hpp>
#include <boost/type_traits/is_member_function_pointer.hpp>
#include <boost/type_traits/remove_cv.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/utility/declval.hpp>
#include <boost/utility/enable_if.hpp>
#ifndef BOOST_RESULT_OF_NUM_ARGS
# define BOOST_RESULT_OF_NUM_ARGS 16
#endif
// Use the decltype-based version of result_of by default if the compiler
// supports N3276 <http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2011/n3276.pdf>.
// The user can force the choice by defining BOOST_RESULT_OF_USE_DECLTYPE,
// BOOST_RESULT_OF_USE_TR1, or BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK but not more than one!
#if (defined(BOOST_RESULT_OF_USE_DECLTYPE) && defined(BOOST_RESULT_OF_USE_TR1)) || \
(defined(BOOST_RESULT_OF_USE_DECLTYPE) && defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)) || \
(defined(BOOST_RESULT_OF_USE_TR1) && defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK))
# error More than one of BOOST_RESULT_OF_USE_DECLTYPE, BOOST_RESULT_OF_USE_TR1 and \
BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK cannot be defined at the same time.
#endif
#if defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK) && defined(BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE)
# error Cannot fallback to decltype if BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE is not defined.
#endif
#ifndef BOOST_RESULT_OF_USE_TR1
# ifndef BOOST_RESULT_OF_USE_DECLTYPE
# ifndef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
# ifndef BOOST_NO_CXX11_DECLTYPE_N3276 // this implies !defined(BOOST_NO_CXX11_DECLTYPE)
# define BOOST_RESULT_OF_USE_DECLTYPE
# else
# define BOOST_RESULT_OF_USE_TR1
# endif
# endif
# endif
#endif
namespace boost {
template<typename F> struct result_of;
template<typename F> struct tr1_result_of; // a TR1-style implementation of result_of
#if !defined(BOOST_NO_SFINAE)
namespace detail {
BOOST_MPL_HAS_XXX_TRAIT_DEF(result_type)
// Work around a nvcc bug by only defining has_result when it's needed.
#ifdef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
BOOST_MPL_HAS_XXX_TEMPLATE_DEF(result)
#endif
template<typename F, typename FArgs, bool HasResultType> struct tr1_result_of_impl;
template<typename F> struct cpp0x_result_of;
#ifdef BOOST_NO_SFINAE_EXPR
// There doesn't seem to be any other way to turn this off such that the presence of
// the user-defined operator,() below doesn't cause spurious warning all over the place,
// so unconditionally turn it off.
#if BOOST_MSVC
# pragma warning(disable: 4913) // user defined binary operator ',' exists but no overload could convert all operands, default built-in binary operator ',' used
#endif
struct result_of_private_type {};
struct result_of_weird_type {
friend result_of_private_type operator,(result_of_private_type, result_of_weird_type);
};
typedef char result_of_yes_type; // sizeof(result_of_yes_type) == 1
typedef char (&result_of_no_type)[2]; // sizeof(result_of_no_type) == 2
template<typename T>
result_of_no_type result_of_is_private_type(T const &);
result_of_yes_type result_of_is_private_type(result_of_private_type);
template<typename C>
struct result_of_callable_class : C {
result_of_callable_class();
typedef result_of_private_type const &(*pfn_t)(...);
operator pfn_t() const volatile;
};
template<typename C>
struct result_of_wrap_callable_class {
typedef result_of_callable_class<C> type;
};
template<typename C>
struct result_of_wrap_callable_class<C const> {
typedef result_of_callable_class<C> const type;
};
template<typename C>
struct result_of_wrap_callable_class<C volatile> {
typedef result_of_callable_class<C> volatile type;
};
template<typename C>
struct result_of_wrap_callable_class<C const volatile> {
typedef result_of_callable_class<C> const volatile type;
};
template<typename C>
struct result_of_wrap_callable_class<C &> {
typedef typename result_of_wrap_callable_class<C>::type &type;
};
template<typename F, bool TestCallability = true> struct cpp0x_result_of_impl;
#else // BOOST_NO_SFINAE_EXPR
template<typename T>
struct result_of_always_void
{
typedef void type;
};
template<typename F, typename Enable = void> struct cpp0x_result_of_impl {};
#endif // BOOST_NO_SFINAE_EXPR
template<typename F>
struct result_of_void_impl
{
typedef void type;
};
template<typename R>
struct result_of_void_impl<R (*)(void)>
{
typedef R type;
};
template<typename R>
struct result_of_void_impl<R (&)(void)>
{
typedef R type;
};
// Determine the return type of a function pointer or pointer to member.
template<typename F, typename FArgs>
struct result_of_pointer
: tr1_result_of_impl<typename remove_cv<F>::type, FArgs, false> { };
template<typename F, typename FArgs>
struct tr1_result_of_impl<F, FArgs, true>
{
typedef typename F::result_type type;
};
template<typename FArgs>
struct is_function_with_no_args : mpl::false_ {};
template<typename F>
struct is_function_with_no_args<F(void)> : mpl::true_ {};
template<typename F, typename FArgs>
struct result_of_nested_result : F::template result<FArgs>
{};
template<typename F, typename FArgs>
struct tr1_result_of_impl<F, FArgs, false>
: mpl::if_<is_function_with_no_args<FArgs>,
result_of_void_impl<F>,
result_of_nested_result<F, FArgs> >::type
{};
} // end namespace detail
#define BOOST_PP_ITERATION_PARAMS_1 (3,(0,BOOST_RESULT_OF_NUM_ARGS,<boost/utility/detail/result_of_iterate.hpp>))
#include BOOST_PP_ITERATE()
#else
# define BOOST_NO_RESULT_OF 1
#endif
}
#endif // BOOST_RESULT_OF_HPP