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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Joaquin M Lopez Munoz 2006-2013
// (C) Copyright Ion Gaztanaga 2014-2014
//
// 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_DETAIL_EBO_HOLDER_HPP
#define BOOST_INTRUSIVE_DETAIL_EBO_HOLDER_HPP
#if defined(_MSC_VER)
# pragma once
#endif
#include <boost/config.hpp>
namespace boost {
namespace intrusive {
namespace detail {
#if defined(BOOST_MSVC) || defined(__BORLANDC_)
#define BOOST_INTRUSIVE_TT_DECL __cdecl
#else
#define BOOST_INTRUSIVE_TT_DECL
#endif
#if defined(_MSC_EXTENSIONS) && !defined(__BORLAND__) && !defined(_WIN64) && !defined(_M_ARM) && !defined(UNDER_CE)
#define BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
#endif
template <typename T>
struct is_unary_or_binary_function_impl
{ static const bool value = false; };
// see boost ticket #4094
// avoid duplicate definitions of is_unary_or_binary_function_impl
#ifndef BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
template <typename R>
struct is_unary_or_binary_function_impl<R (*)()>
{ static const bool value = true; };
template <typename R>
struct is_unary_or_binary_function_impl<R (*)(...)>
{ static const bool value = true; };
#else // BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
template <typename R>
struct is_unary_or_binary_function_impl<R (__stdcall*)()>
{ static const bool value = true; };
#ifndef _MANAGED
template <typename R>
struct is_unary_or_binary_function_impl<R (__fastcall*)()>
{ static const bool value = true; };
#endif
template <typename R>
struct is_unary_or_binary_function_impl<R (__cdecl*)()>
{ static const bool value = true; };
template <typename R>
struct is_unary_or_binary_function_impl<R (__cdecl*)(...)>
{ static const bool value = true; };
#endif
// see boost ticket #4094
// avoid duplicate definitions of is_unary_or_binary_function_impl
#ifndef BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
template <typename R, class T0>
struct is_unary_or_binary_function_impl<R (*)(T0)>
{ static const bool value = true; };
template <typename R, class T0>
struct is_unary_or_binary_function_impl<R (*)(T0...)>
{ static const bool value = true; };
#else // BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
template <typename R, class T0>
struct is_unary_or_binary_function_impl<R (__stdcall*)(T0)>
{ static const bool value = true; };
#ifndef _MANAGED
template <typename R, class T0>
struct is_unary_or_binary_function_impl<R (__fastcall*)(T0)>
{ static const bool value = true; };
#endif
template <typename R, class T0>
struct is_unary_or_binary_function_impl<R (__cdecl*)(T0)>
{ static const bool value = true; };
template <typename R, class T0>
struct is_unary_or_binary_function_impl<R (__cdecl*)(T0...)>
{ static const bool value = true; };
#endif
// see boost ticket #4094
// avoid duplicate definitions of is_unary_or_binary_function_impl
#ifndef BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
template <typename R, class T0, class T1>
struct is_unary_or_binary_function_impl<R (*)(T0, T1)>
{ static const bool value = true; };
template <typename R, class T0, class T1>
struct is_unary_or_binary_function_impl<R (*)(T0, T1...)>
{ static const bool value = true; };
#else // BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
template <typename R, class T0, class T1>
struct is_unary_or_binary_function_impl<R (__stdcall*)(T0, T1)>
{ static const bool value = true; };
#ifndef _MANAGED
template <typename R, class T0, class T1>
struct is_unary_or_binary_function_impl<R (__fastcall*)(T0, T1)>
{ static const bool value = true; };
#endif
template <typename R, class T0, class T1>
struct is_unary_or_binary_function_impl<R (__cdecl*)(T0, T1)>
{ static const bool value = true; };
template <typename R, class T0, class T1>
struct is_unary_or_binary_function_impl<R (__cdecl*)(T0, T1...)>
{ static const bool value = true; };
#endif
template <typename T>
struct is_unary_or_binary_function_impl<T&>
{ static const bool value = false; };
template<typename T>
struct is_unary_or_binary_function : is_unary_or_binary_function_impl<T>
{};
template<typename T, bool IsEmpty = true>
class ebo_functor_holder_impl
{
public:
ebo_functor_holder_impl()
{}
ebo_functor_holder_impl(const T& t)
: t_(t)
{}
template<class Arg1, class Arg2>
ebo_functor_holder_impl(const Arg1& arg1, const Arg2& arg2)
: t_(arg1, arg2)
{}
T& get(){return t_;}
const T& get()const{return t_;}
private:
T t_;
};
template<typename T>
class ebo_functor_holder_impl<T, false>
: public T
{
public:
ebo_functor_holder_impl()
{}
ebo_functor_holder_impl(const T& t)
: T(t)
{}
template<class Arg1, class Arg2>
ebo_functor_holder_impl(const Arg1& arg1, const Arg2& arg2)
: T(arg1, arg2)
{}
T& get(){return *this;}
const T& get()const{return *this;}
};
template<typename T>
class ebo_functor_holder
: public ebo_functor_holder_impl<T, is_unary_or_binary_function<T>::value>
{
private:
typedef ebo_functor_holder_impl<T, is_unary_or_binary_function<T>::value> super;
public:
ebo_functor_holder(){}
ebo_functor_holder(const T& t)
: super(t)
{}
template<class Arg1, class Arg2>
ebo_functor_holder(const Arg1& arg1, const Arg2& arg2)
: super(arg1, arg2)
{}
ebo_functor_holder& operator=(const ebo_functor_holder& x)
{
this->get()=x.get();
return *this;
}
};
} //namespace detail {
} //namespace intrusive {
} //namespace boost {
#endif //#ifndef BOOST_INTRUSIVE_DETAIL_EBO_HOLDER_HPP
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