--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/stdapis/boost/function/function_template.hpp Tue Mar 16 16:12:26 2010 +0000
@@ -0,0 +1,837 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2001-2006. 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
+
+// Note: this header is a header template and must NOT have multiple-inclusion
+// protection.
+#include <boost/function/detail/prologue.hpp>
+
+#define BOOST_FUNCTION_TEMPLATE_PARMS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, typename T)
+
+#define BOOST_FUNCTION_TEMPLATE_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, T)
+
+#define BOOST_FUNCTION_PARM(J,I,D) BOOST_PP_CAT(T,I) BOOST_PP_CAT(a,I)
+
+#define BOOST_FUNCTION_PARMS BOOST_PP_ENUM(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_PARM,BOOST_PP_EMPTY)
+
+#define BOOST_FUNCTION_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, a)
+
+#define BOOST_FUNCTION_ARG_TYPE(J,I,D) \
+ typedef BOOST_PP_CAT(T,I) BOOST_PP_CAT(BOOST_PP_CAT(arg, BOOST_PP_INC(I)),_type);
+
+#define BOOST_FUNCTION_ARG_TYPES BOOST_PP_REPEAT(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_ARG_TYPE,BOOST_PP_EMPTY)
+
+// Type of the default allocator
+#ifndef BOOST_NO_STD_ALLOCATOR
+# define BOOST_FUNCTION_DEFAULT_ALLOCATOR std::allocator<function_base>
+#else
+# define BOOST_FUNCTION_DEFAULT_ALLOCATOR int
+#endif // BOOST_NO_STD_ALLOCATOR
+
+// Comma if nonzero number of arguments
+#if BOOST_FUNCTION_NUM_ARGS == 0
+# define BOOST_FUNCTION_COMMA
+#else
+# define BOOST_FUNCTION_COMMA ,
+#endif // BOOST_FUNCTION_NUM_ARGS > 0
+
+// Class names used in this version of the code
+#define BOOST_FUNCTION_FUNCTION BOOST_JOIN(function,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_FUNCTION_INVOKER \
+ BOOST_JOIN(function_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_FUNCTION_INVOKER \
+ BOOST_JOIN(void_function_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_FUNCTION_OBJ_INVOKER \
+ BOOST_JOIN(function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER \
+ BOOST_JOIN(void_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_FUNCTION_REF_INVOKER \
+ BOOST_JOIN(function_ref_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER \
+ BOOST_JOIN(void_function_ref_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_FUNCTION_INVOKER \
+ BOOST_JOIN(get_function_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER \
+ BOOST_JOIN(get_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER \
+ BOOST_JOIN(get_function_ref_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VTABLE BOOST_JOIN(basic_vtable,BOOST_FUNCTION_NUM_ARGS)
+
+#ifndef BOOST_NO_VOID_RETURNS
+# define BOOST_FUNCTION_VOID_RETURN_TYPE void
+# define BOOST_FUNCTION_RETURN(X) X
+#else
+# define BOOST_FUNCTION_VOID_RETURN_TYPE boost::detail::function::unusable
+# define BOOST_FUNCTION_RETURN(X) X; return BOOST_FUNCTION_VOID_RETURN_TYPE ()
+#endif
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable: 4127) // conditional expression is constant.
+#endif
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable: 4127) // conditional expression is constant.
+#endif
+
+namespace boost {
+ namespace detail {
+ namespace function {
+ template<
+ typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_FUNCTION_INVOKER
+ {
+ static R invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+ {
+ FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr);
+ return f(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_FUNCTION_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr);
+ BOOST_FUNCTION_RETURN(f(BOOST_FUNCTION_ARGS));
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_FUNCTION_OBJ_INVOKER
+ {
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f;
+ if (function_allows_small_object_optimization<FunctionObj>::value)
+ f = reinterpret_cast<FunctionObj*>(&function_obj_ptr.data);
+ else
+ f = reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ return (*f)(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f;
+ if (function_allows_small_object_optimization<FunctionObj>::value)
+ f = reinterpret_cast<FunctionObj*>(&function_obj_ptr.data);
+ else
+ f = reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_FUNCTION_REF_INVOKER
+ {
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f =
+ reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ return (*f)(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f =
+ reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));
+ }
+ };
+
+ template<
+ typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_FUNCTION_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_FUNCTION_REF_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+
+ /**
+ * vtable for a specific boost::function instance.
+ */
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct BOOST_FUNCTION_VTABLE : vtable_base
+ {
+#ifndef BOOST_NO_VOID_RETURNS
+ typedef R result_type;
+#else
+ typedef typename function_return_type<R>::type result_type;
+#endif // BOOST_NO_VOID_RETURNS
+
+ typedef result_type (*invoker_type)(function_buffer&
+ BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS);
+
+ template<typename F>
+ BOOST_FUNCTION_VTABLE(F f) : vtable_base(), invoker(0)
+ {
+ init(f);
+ }
+
+ template<typename F>
+ bool assign_to(F f, function_buffer& functor)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ return assign_to(f, functor, tag());
+ }
+
+ void clear(function_buffer& functor)
+ {
+ if (manager)
+ manager(functor, functor, destroy_functor_tag);
+ }
+
+ private:
+ template<typename F>
+ void init(F f)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ init(f, tag());
+ }
+
+ // Function pointers
+ template<typename FunctionPtr>
+ void init(FunctionPtr /*f*/, function_ptr_tag)
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ actual_invoker_type;
+
+ invoker = &actual_invoker_type::invoke;
+ manager = &functor_manager<FunctionPtr, Allocator>::manage;
+ }
+
+ template<typename FunctionPtr>
+ bool
+ assign_to(FunctionPtr f, function_buffer& functor, function_ptr_tag)
+ {
+ this->clear(functor);
+ if (f) {
+ // should be a reinterpret cast, but some compilers insist
+ // on giving cv-qualifiers to free functions
+ functor.func_ptr = (void (*)())(f);
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Member pointers
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ template<typename MemberPtr>
+ void init(MemberPtr f, member_ptr_tag)
+ {
+ // DPG TBD: Add explicit support for member function
+ // objects, so we invoke through mem_fn() but we retain the
+ // right target_type() values.
+ this->init(mem_fn(f));
+ }
+
+ template<typename MemberPtr>
+ bool assign_to(MemberPtr f, function_buffer& functor, member_ptr_tag)
+ {
+ // DPG TBD: Add explicit support for member function
+ // objects, so we invoke through mem_fn() but we retain the
+ // right target_type() values.
+ if (f) {
+ this->assign_to(mem_fn(f), functor);
+ return true;
+ } else {
+ return false;
+ }
+ }
+#endif // BOOST_FUNCTION_NUM_ARGS > 0
+
+ // Function objects
+ template<typename FunctionObj>
+ void init(FunctionObj /*f*/, function_obj_tag)
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ actual_invoker_type;
+
+ invoker = &actual_invoker_type::invoke;
+ manager = &functor_manager<FunctionObj, Allocator>::manage;
+ }
+
+ // Assign to a function object using the small object optimization
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::true_)
+ {
+ new ((void*)&functor.data) FunctionObj(f);
+ }
+
+ // Assign to a function object allocated on the heap.
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::false_)
+ {
+#ifndef BOOST_NO_STD_ALLOCATOR
+ typedef typename Allocator::template rebind<FunctionObj>::other
+ allocator_type;
+ typedef typename allocator_type::pointer pointer_type;
+
+ allocator_type allocator;
+ pointer_type copy = allocator.allocate(1);
+ allocator.construct(copy, f);
+
+ // Get back to the original pointer type
+ functor.obj_ptr = static_cast<FunctionObj*>(copy);
+# else
+ functor.obj_ptr = new FunctionObj(f);
+# endif // BOOST_NO_STD_ALLOCATOR
+ }
+
+ template<typename FunctionObj>
+ bool
+ assign_to(FunctionObj f, function_buffer& functor, function_obj_tag)
+ {
+ if (!boost::detail::function::has_empty_target(boost::addressof(f))) {
+ assign_functor(f, functor,
+ mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>());
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Reference to a function object
+ template<typename FunctionObj>
+ void
+ init(const reference_wrapper<FunctionObj>& /*f*/, function_obj_ref_tag)
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ actual_invoker_type;
+
+ invoker = &actual_invoker_type::invoke;
+ manager = &reference_manager<FunctionObj>::get;
+ }
+
+ template<typename FunctionObj>
+ bool
+ assign_to(const reference_wrapper<FunctionObj>& f,
+ function_buffer& functor, function_obj_ref_tag)
+ {
+ if (!boost::detail::function::has_empty_target(f.get_pointer())) {
+ // DPG TBD: We might need to detect constness of
+ // FunctionObj to assign into obj_ptr or const_obj_ptr to
+ // be truly legit, but no platform in existence makes
+ // const void* different from void*.
+ functor.const_obj_ptr = f.get_pointer();
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ public:
+ invoker_type invoker;
+ };
+ } // end namespace function
+ } // end namespace detail
+
+ template<
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator = BOOST_FUNCTION_DEFAULT_ALLOCATOR
+ >
+ class BOOST_FUNCTION_FUNCTION : public function_base
+ {
+ public:
+#ifndef BOOST_NO_VOID_RETURNS
+ typedef R result_type;
+#else
+ typedef typename boost::detail::function::function_return_type<R>::type
+ result_type;
+#endif // BOOST_NO_VOID_RETURNS
+
+ private:
+ typedef boost::detail::function::BOOST_FUNCTION_VTABLE<
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS, Allocator>
+ vtable_type;
+
+ struct clear_type {};
+
+ public:
+ BOOST_STATIC_CONSTANT(int, args = BOOST_FUNCTION_NUM_ARGS);
+
+ // add signature for boost::lambda
+ template<typename Args>
+ struct sig
+ {
+ typedef result_type type;
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS == 1
+ typedef T0 argument_type;
+#elif BOOST_FUNCTION_NUM_ARGS == 2
+ typedef T0 first_argument_type;
+ typedef T1 second_argument_type;
+#endif
+
+ BOOST_STATIC_CONSTANT(int, arity = BOOST_FUNCTION_NUM_ARGS);
+ BOOST_FUNCTION_ARG_TYPES
+
+ typedef Allocator allocator_type;
+ typedef BOOST_FUNCTION_FUNCTION self_type;
+
+ BOOST_FUNCTION_FUNCTION() : function_base() { }
+
+ // MSVC chokes if the following two constructors are collapsed into
+ // one with a default parameter.
+ template<typename Functor>
+ BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (boost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif // BOOST_NO_SFINAE
+ ) :
+ function_base()
+ {
+ this->assign_to(f);
+ }
+
+#ifndef BOOST_NO_SFINAE
+ BOOST_FUNCTION_FUNCTION(clear_type*) : function_base() { }
+#else
+ BOOST_FUNCTION_FUNCTION(int zero) : function_base()
+ {
+ BOOST_ASSERT(zero == 0);
+ }
+#endif
+
+ BOOST_FUNCTION_FUNCTION(const BOOST_FUNCTION_FUNCTION& f) : function_base()
+ {
+ this->assign_to_own(f);
+ }
+
+ ~BOOST_FUNCTION_FUNCTION() { clear(); }
+
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ // MSVC 6.0 and prior require all definitions to be inline, but
+ // these definitions can become very costly.
+ result_type operator()(BOOST_FUNCTION_PARMS) const
+ {
+ if (this->empty())
+ boost::throw_exception(bad_function_call());
+
+ return static_cast<vtable_type*>(vtable)->invoker
+ (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
+ }
+#else
+ result_type operator()(BOOST_FUNCTION_PARMS) const;
+#endif
+
+ // The distinction between when to use BOOST_FUNCTION_FUNCTION and
+ // when to use self_type is obnoxious. MSVC cannot handle self_type as
+ // the return type of these assignment operators, but Borland C++ cannot
+ // handle BOOST_FUNCTION_FUNCTION as the type of the temporary to
+ // construct.
+ template<typename Functor>
+#ifndef BOOST_NO_SFINAE
+ typename enable_if_c<
+ (boost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ BOOST_FUNCTION_FUNCTION&>::type
+#else
+ BOOST_FUNCTION_FUNCTION&
+#endif
+ operator=(Functor BOOST_FUNCTION_TARGET_FIX(const &) f)
+ {
+ this->clear();
+ try {
+ this->assign_to(f);
+ } catch (...) {
+ vtable = 0;
+ throw;
+ }
+ return *this;
+ }
+
+#ifndef BOOST_NO_SFINAE
+ BOOST_FUNCTION_FUNCTION& operator=(clear_type*)
+ {
+ this->clear();
+ return *this;
+ }
+#else
+ BOOST_FUNCTION_FUNCTION& operator=(int zero)
+ {
+ BOOST_ASSERT(zero == 0);
+ this->clear();
+ return *this;
+ }
+#endif
+
+ // Assignment from another BOOST_FUNCTION_FUNCTION
+ BOOST_FUNCTION_FUNCTION& operator=(const BOOST_FUNCTION_FUNCTION& f)
+ {
+ if (&f == this)
+ return *this;
+
+ this->clear();
+ try {
+ this->assign_to_own(f);
+ } catch (...) {
+ vtable = 0;
+ throw;
+ }
+ return *this;
+ }
+
+ void swap(BOOST_FUNCTION_FUNCTION& other)
+ {
+ if (&other == this)
+ return;
+
+ BOOST_FUNCTION_FUNCTION tmp = *this;
+ *this = other;
+ other = tmp;
+ }
+
+ // Clear out a target, if there is one
+ void clear()
+ {
+ if (vtable) {
+ static_cast<vtable_type*>(vtable)->clear(this->functor);
+ vtable = 0;
+ }
+ }
+
+#if (defined __SUNPRO_CC) && (__SUNPRO_CC <= 0x530) && !(defined BOOST_NO_COMPILER_CONFIG)
+ // Sun C++ 5.3 can't handle the safe_bool idiom, so don't use it
+ operator bool () const { return !this->empty(); }
+#else
+ private:
+ struct dummy {
+ void nonnull() {};
+ };
+
+ typedef void (dummy::*safe_bool)();
+
+ public:
+ operator safe_bool () const
+ { return (this->empty())? 0 : &dummy::nonnull; }
+
+ bool operator!() const
+ { return this->empty(); }
+#endif
+
+ private:
+ void assign_to_own(const BOOST_FUNCTION_FUNCTION& f)
+ {
+ if (!f.empty()) {
+ this->vtable = f.vtable;
+ f.vtable->manager(f.functor, this->functor,
+ boost::detail::function::clone_functor_tag);
+ }
+ }
+
+ template<typename Functor>
+ void assign_to(Functor f)
+ {
+ static vtable_type stored_vtable(f);
+ if (stored_vtable.assign_to(f, functor)) vtable = &stored_vtable;
+ else vtable = 0;
+ }
+ };
+
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS ,
+ typename Allocator>
+ inline void swap(BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator
+ >& f1,
+ BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS,
+ Allocator
+ >& f2)
+ {
+ f1.swap(f2);
+ }
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ typename BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS,
+ Allocator>::result_type
+ BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS,
+
+ Allocator>
+ ::operator()(BOOST_FUNCTION_PARMS) const
+ {
+ if (this->empty())
+ boost::throw_exception(bad_function_call());
+
+ return static_cast<vtable_type*>(vtable)->invoker
+ (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
+ }
+#endif
+
+// Poison comparisons between boost::function objects of the same type.
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS ,
+ typename Allocator>
+ void operator==(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&);
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS ,
+ typename Allocator>
+ void operator!=(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&);
+
+#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
+
+#if BOOST_FUNCTION_NUM_ARGS == 0
+#define BOOST_FUNCTION_PARTIAL_SPEC R (void)
+#else
+#define BOOST_FUNCTION_PARTIAL_SPEC R (BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS,T))
+#endif
+
+template<typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+class function<BOOST_FUNCTION_PARTIAL_SPEC, Allocator>
+ : public BOOST_FUNCTION_FUNCTION<R, BOOST_FUNCTION_TEMPLATE_ARGS
+ BOOST_FUNCTION_COMMA Allocator>
+{
+ typedef BOOST_FUNCTION_FUNCTION<R, BOOST_FUNCTION_TEMPLATE_ARGS
+ BOOST_FUNCTION_COMMA Allocator> base_type;
+ typedef function self_type;
+
+ struct clear_type {};
+
+public:
+ typedef typename base_type::allocator_type allocator_type;
+
+ function() : base_type() {}
+
+ template<typename Functor>
+ function(Functor f
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (boost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif
+ ) :
+ base_type(f)
+ {
+ }
+
+#ifndef BOOST_NO_SFINAE
+ function(clear_type*) : base_type() {}
+#endif
+
+ function(const self_type& f) : base_type(static_cast<const base_type&>(f)){}
+
+ function(const base_type& f) : base_type(static_cast<const base_type&>(f)){}
+
+ self_type& operator=(const self_type& f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+ template<typename Functor>
+#ifndef BOOST_NO_SFINAE
+ typename enable_if_c<
+ (boost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ self_type&>::type
+#else
+ self_type&
+#endif
+ operator=(Functor f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+#ifndef BOOST_NO_SFINAE
+ self_type& operator=(clear_type*)
+ {
+ this->clear();
+ return *this;
+ }
+#endif
+
+ self_type& operator=(const base_type& f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+};
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif
+
+#undef BOOST_FUNCTION_PARTIAL_SPEC
+#endif // have partial specialization
+
+} // end namespace boost
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif
+
+// Cleanup after ourselves...
+#undef BOOST_FUNCTION_VTABLE
+#undef BOOST_FUNCTION_DEFAULT_ALLOCATOR
+#undef BOOST_FUNCTION_COMMA
+#undef BOOST_FUNCTION_FUNCTION
+#undef BOOST_FUNCTION_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_VOID_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_FUNCTION_OBJ_INVOKER
+#undef BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER
+#undef BOOST_FUNCTION_FUNCTION_REF_INVOKER
+#undef BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER
+#undef BOOST_FUNCTION_GET_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER
+#undef BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER
+#undef BOOST_FUNCTION_GET_MEM_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_TEMPLATE_PARMS
+#undef BOOST_FUNCTION_TEMPLATE_ARGS
+#undef BOOST_FUNCTION_PARMS
+#undef BOOST_FUNCTION_PARM
+#undef BOOST_FUNCTION_ARGS
+#undef BOOST_FUNCTION_ARG_TYPE
+#undef BOOST_FUNCTION_ARG_TYPES
+#undef BOOST_FUNCTION_VOID_RETURN_TYPE
+#undef BOOST_FUNCTION_RETURN