--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/boostlibrary/boost/function/function_template.hpp Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,1134 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2001-2006
+// Copyright Emil Dotchevski 2007
+// 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>
+
+#if defined(BOOST_MSVC)
+# pragma warning( push )
+# pragma warning( disable : 4127 ) // "conditional expression is constant"
+#endif
+
+#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)
+
+// 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_MEMBER_INVOKER \
+ BOOST_JOIN(function_mem_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_MEMBER_INVOKER \
+ BOOST_JOIN(function_void_mem_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_GET_MEMBER_INVOKER \
+ BOOST_JOIN(get_member_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_INVOKER \
+ BOOST_JOIN(get_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
+
+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));
+ }
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ /* Handle invocation of member pointers. */
+ template<
+ typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_MEMBER_INVOKER
+ {
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ MemberPtr* f =
+ reinterpret_cast<MemberPtr*>(&function_obj_ptr.data);
+ return boost::mem_fn(*f)(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_MEMBER_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ MemberPtr* f =
+ reinterpret_cast<MemberPtr*>(&function_obj_ptr.data);
+ BOOST_FUNCTION_RETURN(boost::mem_fn(*f)(BOOST_FUNCTION_ARGS));
+ }
+ };
+#endif
+
+ 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;
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ /* Retrieve the appropriate invoker for a member pointer. */
+ template<
+ typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_MEMBER_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+#endif
+
+ /* Given the tag returned by get_function_tag, retrieve the
+ actual invoker that will be used for the given function
+ object.
+
+ Each specialization contains an "apply" nested class template
+ that accepts the function object, return type, function
+ argument types, and allocator. The resulting "apply" class
+ contains two typedefs, "invoker_type" and "manager_type",
+ which correspond to the invoker and manager types. */
+ template<typename Tag>
+ struct BOOST_FUNCTION_GET_INVOKER { };
+
+ /* Retrieve the invoker for a function pointer. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<function_ptr_tag>
+ {
+ template<typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<FunctionPtr> manager_type;
+ };
+
+ template<typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<FunctionPtr> manager_type;
+ };
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ /* Retrieve the invoker for a member pointer. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<member_ptr_tag>
+ {
+ template<typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<MemberPtr> manager_type;
+ };
+
+ template<typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<MemberPtr> manager_type;
+ };
+ };
+#endif
+
+ /* Retrieve the invoker for a function object. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<function_obj_tag>
+ {
+ template<typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<FunctionObj> manager_type;
+ };
+
+ template<typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager_a<FunctionObj, Allocator> manager_type;
+ };
+ };
+
+ /* Retrieve the invoker for a reference to a function object. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<function_obj_ref_tag>
+ {
+ template<typename RefWrapper,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER<
+ typename RefWrapper::type,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef reference_manager<typename RefWrapper::type> manager_type;
+ };
+
+ template<typename RefWrapper,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER<
+ typename RefWrapper::type,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef reference_manager<typename RefWrapper::type> manager_type;
+ };
+ };
+
+
+ /**
+ * vtable for a specific boost::function instance. This
+ * structure must be an aggregate so that we can use static
+ * initialization in boost::function's assign_to and assign_to_a
+ * members. It therefore cannot have any constructors,
+ * destructors, base classes, etc.
+ */
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct BOOST_FUNCTION_VTABLE
+ {
+#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>
+ bool assign_to(F f, function_buffer& functor)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ return assign_to(f, functor, tag());
+ }
+ template<typename F,typename Allocator>
+ bool assign_to_a(F f, function_buffer& functor, Allocator a)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ return assign_to_a(f, functor, a, tag());
+ }
+
+ void clear(function_buffer& functor)
+ {
+ if (base.manager)
+ base.manager(functor, functor, destroy_functor_tag);
+ }
+
+ private:
+ // Function pointers
+ 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;
+ }
+ }
+ template<typename FunctionPtr,typename Allocator>
+ bool
+ assign_to_a(FunctionPtr f, function_buffer& functor, Allocator, function_ptr_tag)
+ {
+ return assign_to(f,functor,function_ptr_tag());
+ }
+
+ // Member pointers
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ 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;
+ }
+ }
+ template<typename MemberPtr,typename Allocator>
+ bool assign_to_a(MemberPtr f, function_buffer& functor, Allocator a, 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_a(mem_fn(f), functor, a);
+ return true;
+ } else {
+ return false;
+ }
+ }
+#endif // BOOST_FUNCTION_NUM_ARGS > 0
+
+ // Function objects
+ // 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);
+ }
+ template<typename FunctionObj,typename Allocator>
+ void
+ assign_functor_a(FunctionObj f, function_buffer& functor, Allocator, mpl::true_)
+ {
+ assign_functor(f,functor,mpl::true_());
+ }
+
+ // Assign to a function object allocated on the heap.
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::false_)
+ {
+ functor.obj_ptr = new FunctionObj(f);
+ }
+ template<typename FunctionObj,typename Allocator>
+ void
+ assign_functor_a(FunctionObj f, function_buffer& functor, Allocator a, mpl::false_)
+ {
+ typedef functor_wrapper<FunctionObj,Allocator> functor_wrapper_type;
+ typedef typename Allocator::template rebind<functor_wrapper_type>::other
+ wrapper_allocator_type;
+ typedef typename wrapper_allocator_type::pointer wrapper_allocator_pointer_type;
+ wrapper_allocator_type wrapper_allocator(a);
+ wrapper_allocator_pointer_type copy = wrapper_allocator.allocate(1);
+ wrapper_allocator.construct(copy, functor_wrapper_type(f,a));
+ functor_wrapper_type* new_f = static_cast<functor_wrapper_type*>(copy);
+ functor.obj_ptr = new_f;
+ }
+
+ 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;
+ }
+ }
+ template<typename FunctionObj,typename Allocator>
+ bool
+ assign_to_a(FunctionObj f, function_buffer& functor, Allocator a, function_obj_tag)
+ {
+ if (!boost::detail::function::has_empty_target(boost::addressof(f))) {
+ assign_functor_a(f, functor, a,
+ mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>());
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Reference to a function object
+ 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())) {
+ functor.obj_ref.obj_ptr = (void *)f.get_pointer();
+ functor.obj_ref.is_const_qualified = is_const<FunctionObj>::value;
+ functor.obj_ref.is_volatile_qualified = is_volatile<FunctionObj>::value;
+ return true;
+ } else {
+ return false;
+ }
+ }
+ template<typename FunctionObj,typename Allocator>
+ bool
+ assign_to_a(const reference_wrapper<FunctionObj>& f,
+ function_buffer& functor, Allocator, function_obj_ref_tag)
+ {
+ return assign_to(f,functor,function_obj_ref_tag());
+ }
+
+ public:
+ vtable_base base;
+ invoker_type invoker;
+ };
+ } // end namespace function
+ } // end namespace detail
+
+ template<
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ class BOOST_FUNCTION_FUNCTION : public function_base
+
+#if BOOST_FUNCTION_NUM_ARGS == 1
+
+ , public std::unary_function<T0,R>
+
+#elif BOOST_FUNCTION_NUM_ARGS == 2
+
+ , public std::binary_function<T0,T1,R>
+
+#endif
+
+ {
+ 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>
+ 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 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);
+ }
+ template<typename Functor,typename Allocator>
+ BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a
+#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_a(f,a);
+ }
+
+#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;
+ }
+ template<typename Functor,typename Allocator>
+ void assign(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a)
+ {
+ this->clear();
+ try {
+ this->assign_to_a(f,a);
+ } catch (...) {
+ vtable = 0;
+ throw;
+ }
+ }
+
+#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;
+ tmp.move_assign(*this);
+ this->move_assign(other);
+ other.move_assign(tmp);
+ }
+
+ // Clear out a target, if there is one
+ void clear()
+ {
+ if (vtable) {
+ reinterpret_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)
+ {
+ using detail::function::vtable_base;
+
+ typedef typename detail::function::get_function_tag<Functor>::type tag;
+ typedef detail::function::BOOST_FUNCTION_GET_INVOKER<tag> get_invoker;
+ typedef typename get_invoker::
+ template apply<Functor, R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>
+ handler_type;
+
+ typedef typename handler_type::invoker_type invoker_type;
+ typedef typename handler_type::manager_type manager_type;
+
+ // Note: it is extremely important that this initialization use
+ // static initialization. Otherwise, we will have a race
+ // condition here in multi-threaded code. See
+ // http://thread.gmane.org/gmane.comp.lib.boost.devel/164902/.
+ static vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to(f, functor)) vtable = &stored_vtable.base;
+ else vtable = 0;
+ }
+
+ template<typename Functor,typename Allocator>
+ void assign_to_a(Functor f,Allocator a)
+ {
+ using detail::function::vtable_base;
+
+ typedef typename detail::function::get_function_tag<Functor>::type tag;
+ typedef detail::function::BOOST_FUNCTION_GET_INVOKER<tag> get_invoker;
+ typedef typename get_invoker::
+ template apply_a<Functor, R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS,
+ Allocator>
+ handler_type;
+
+ typedef typename handler_type::invoker_type invoker_type;
+ typedef typename handler_type::manager_type manager_type;
+
+ // Note: it is extremely important that this initialization use
+ // static initialization. Otherwise, we will have a race
+ // condition here in multi-threaded code. See
+ // http://thread.gmane.org/gmane.comp.lib.boost.devel/164902/.
+ static vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to_a(f, functor, a)) vtable = &stored_vtable.base;
+ else vtable = 0;
+ }
+
+ // Moves the value from the specified argument to *this. If the argument
+ // has its function object allocated on the heap, move_assign will pass
+ // its buffer to *this, and set the argument's buffer pointer to NULL.
+ void move_assign(BOOST_FUNCTION_FUNCTION& f)
+ {
+ if (&f == this)
+ return;
+
+#if !defined(BOOST_NO_EXCEPTIONS)
+ try {
+#endif
+ if (!f.empty()) {
+ this->vtable = f.vtable;
+ f.vtable->manager(f.functor, this->functor,
+ boost::detail::function::move_functor_tag);
+ f.vtable = 0;
+#if !defined(BOOST_NO_EXCEPTIONS)
+ } else {
+ clear();
+ }
+ } catch (...) {
+ vtable = 0;
+ throw;
+ }
+#endif
+ }
+ };
+
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ inline void swap(BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >& f1,
+ BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >& f2)
+ {
+ f1.swap(f2);
+ }
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ typename BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>::result_type
+ BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>
+ ::operator()(BOOST_FUNCTION_PARMS) const
+ {
+ if (this->empty())
+ boost::throw_exception(bad_function_call());
+
+ return reinterpret_cast<const 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>
+ void operator==(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>&);
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ void operator!=(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>& );
+
+#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>
+class function<BOOST_FUNCTION_PARTIAL_SPEC>
+ : public BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>
+{
+ typedef BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> base_type;
+ typedef function self_type;
+
+ struct clear_type {};
+
+public:
+
+ 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)
+ {
+ }
+ template<typename Functor,typename Allocator>
+ function(Functor f, Allocator a
+#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,a)
+ {
+ }
+
+#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;
+ }
+};
+
+#undef BOOST_FUNCTION_PARTIAL_SPEC
+#endif // have partial specialization
+
+} // end namespace boost
+
+// Cleanup after ourselves...
+#undef BOOST_FUNCTION_VTABLE
+#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_MEMBER_INVOKER
+#undef BOOST_FUNCTION_VOID_MEMBER_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_GET_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
+
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif