// 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
+// 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>
+#include <boost/detail/no_exceptions_support.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_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
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
}
};
+#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
>::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.
+ * 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,
- typename Allocator>
- struct BOOST_FUNCTION_VTABLE : vtable_base
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct BOOST_FUNCTION_VTABLE
{
#ifndef BOOST_NO_VOID_RETURNS
typedef R result_type;
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)
+ bool assign_to(F f, function_buffer& functor) const
{
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)
+ template<typename F,typename Allocator>
+ bool assign_to_a(F f, function_buffer& functor, Allocator a) const
{
typedef typename get_function_tag<F>::type tag;
- init(f, tag());
+ return assign_to_a(f, functor, a, tag());
}
- // Function pointers
- template<typename FunctionPtr>
- void init(FunctionPtr /*f*/, function_ptr_tag)
+ void clear(function_buffer& functor) const
{
- 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;
+ 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)
+ assign_to(FunctionPtr f, function_buffer& functor, function_ptr_tag) const
{
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);
+ functor.func_ptr = reinterpret_cast<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) const
+ {
+ return assign_to(f,functor,function_ptr_tag());
+ }
// Member pointers
#if BOOST_FUNCTION_NUM_ARGS > 0
template<typename MemberPtr>
- void init(MemberPtr f, member_ptr_tag)
+ bool assign_to(MemberPtr f, function_buffer& functor, member_ptr_tag) const
{
// 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));
+ if (f) {
+ this->assign_to(boost::mem_fn(f), functor);
+ return true;
+ } else {
+ return false;
+ }
}
-
- template<typename MemberPtr>
- bool assign_to(MemberPtr f, function_buffer& functor, member_ptr_tag)
+ template<typename MemberPtr,typename Allocator>
+ bool assign_to_a(MemberPtr f, function_buffer& functor, Allocator a, member_ptr_tag) const
{
// 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);
+ this->assign_to_a(boost::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 init(FunctionObj /*f*/, function_obj_tag)
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::true_) const
{
- 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;
+ new (reinterpret_cast<void*>(&functor.data)) FunctionObj(f);
}
-
- // Assign to a function object using the small object optimization
- template<typename FunctionObj>
+ template<typename FunctionObj,typename Allocator>
void
- assign_functor(FunctionObj f, function_buffer& functor, mpl::true_)
+ assign_functor_a(FunctionObj f, function_buffer& functor, Allocator, mpl::true_) const
{
- new ((void*)&functor.data) FunctionObj(f);
+ 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_)
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::false_) const
{
-#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,typename Allocator>
+ void
+ assign_functor_a(FunctionObj f, function_buffer& functor, Allocator a, mpl::false_) const
+ {
+ 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)
+ assign_to(FunctionObj f, function_buffer& functor, function_obj_tag) const
{
if (!boost::detail::function::has_empty_target(boost::addressof(f))) {
assign_functor(f, functor,
return false;
}
}
-
- // Reference to a function object
- template<typename FunctionObj>
- void
- init(const reference_wrapper<FunctionObj>& /*f*/, function_obj_ref_tag)
+ template<typename FunctionObj,typename Allocator>
+ bool
+ assign_to_a(FunctionObj f, function_buffer& functor, Allocator a, function_obj_tag) const
{
- 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;
+ 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)
+ function_buffer& functor, function_obj_ref_tag) const
{
- 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;
- }
+ 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;
+ }
+ template<typename FunctionObj,typename Allocator>
+ bool
+ assign_to_a(const reference_wrapper<FunctionObj>& f,
+ function_buffer& functor, Allocator, function_obj_ref_tag) const
+ {
+ return assign_to(f,functor,function_obj_ref_tag());
}
public:
+ vtable_base base;
invoker_type invoker;
};
} // end namespace function
template<
typename R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_PARMS,
- typename Allocator = BOOST_FUNCTION_DEFAULT_ALLOCATOR
+ 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
private:
typedef boost::detail::function::BOOST_FUNCTION_VTABLE<
- R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS, Allocator>
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>
vtable_type;
+ vtable_type* get_vtable() const {
+ return reinterpret_cast<vtable_type*>(
+ reinterpret_cast<std::size_t>(vtable) & ~static_cast<size_t>(0x01));
+ }
+
struct clear_type {};
public:
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() { }
{
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() { }
~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
+ return get_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
operator=(Functor BOOST_FUNCTION_TARGET_FIX(const &) f)
{
this->clear();
- try {
+ BOOST_TRY {
this->assign_to(f);
- } catch (...) {
+ } BOOST_CATCH (...) {
vtable = 0;
- throw;
+ BOOST_RETHROW;
}
+ BOOST_CATCH_END
return *this;
}
+ template<typename Functor,typename Allocator>
+ void assign(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a)
+ {
+ this->clear();
+ BOOST_TRY{
+ this->assign_to_a(f,a);
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
+ }
#ifndef BOOST_NO_SFINAE
BOOST_FUNCTION_FUNCTION& operator=(clear_type*)
return *this;
this->clear();
- try {
+ BOOST_TRY {
this->assign_to_own(f);
- } catch (...) {
+ } BOOST_CATCH (...) {
vtable = 0;
- throw;
+ BOOST_RETHROW;
}
+ BOOST_CATCH_END
return *this;
}
if (&other == this)
return;
- BOOST_FUNCTION_FUNCTION tmp = *this;
- *this = other;
- other = tmp;
+ 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) {
- static_cast<vtable_type*>(vtable)->clear(this->functor);
+ if (!this->has_trivial_copy_and_destroy())
+ get_vtable()->clear(this->functor);
vtable = 0;
}
}
{
if (!f.empty()) {
this->vtable = f.vtable;
- f.vtable->manager(f.functor, this->functor,
- boost::detail::function::clone_functor_tag);
+ if (this->has_trivial_copy_and_destroy())
+ this->functor = f.functor;
+ else
+ get_vtable()->base.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;
+ 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 const vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to(f, functor)) {
+ std::size_t value = reinterpret_cast<std::size_t>(&stored_vtable.base);
+ if (boost::has_trivial_copy_constructor<Functor>::value &&
+ boost::has_trivial_destructor<Functor>::value &&
+ detail::function::function_allows_small_object_optimization<Functor>::value)
+ value |= static_cast<size_t>(0x01);
+ vtable = reinterpret_cast<detail::function::vtable_base *>(value);
+ } 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 const vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to_a(f, functor, a)) {
+ std::size_t value = reinterpret_cast<std::size_t>(&stored_vtable.base);
+ if (boost::has_trivial_copy_constructor<Functor>::value &&
+ boost::has_trivial_destructor<Functor>::value &&
+ detail::function::function_allows_small_object_optimization<Functor>::value)
+ value |= static_cast<std::size_t>(0x01);
+ vtable = reinterpret_cast<detail::function::vtable_base *>(value);
+ } 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;
+
+ BOOST_TRY {
+ if (!f.empty()) {
+ this->vtable = f.vtable;
+ if (this->has_trivial_copy_and_destroy())
+ this->functor = f.functor;
+ else
+ get_vtable()->base.manager(f.functor, this->functor,
+ boost::detail::function::move_functor_tag);
+ f.vtable = 0;
+ } else {
+ clear();
+ }
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
}
};
- template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS ,
- typename Allocator>
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
inline void swap(BOOST_FUNCTION_FUNCTION<
R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS ,
- Allocator
+ BOOST_FUNCTION_TEMPLATE_ARGS
>& f1,
BOOST_FUNCTION_FUNCTION<
R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS,
- Allocator
+ 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 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>
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
void operator==(const BOOST_FUNCTION_FUNCTION<
R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS ,
- Allocator>&,
+ BOOST_FUNCTION_TEMPLATE_ARGS>&,
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>
+ 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 ,
- Allocator>&,
+ BOOST_FUNCTION_TEMPLATE_ARGS>&,
const BOOST_FUNCTION_FUNCTION<
R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS ,
- Allocator>&);
+ BOOST_FUNCTION_TEMPLATE_ARGS>& );
#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
#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>
+ 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_TEMPLATE_ARGS
- BOOST_FUNCTION_COMMA Allocator> base_type;
+ typedef BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> base_type;
typedef function self_type;
struct clear_type {};
public:
- typedef typename base_type::allocator_type allocator_type;
function() : base_type() {}
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() {}
// 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_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_ARG_TYPES
#undef BOOST_FUNCTION_VOID_RETURN_TYPE
#undef BOOST_FUNCTION_RETURN
+
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif
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