// Boost.Function library
-// Copyright Doug Gregor 2001-2003. 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
// 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_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(arg, BOOST_PP_CAT(BOOST_PP_INC(I),_type));
+ 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
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_STATELESS_FUNCTION_OBJ_INVOKER \
- BOOST_JOIN(stateless_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
-#define BOOST_FUNCTION_STATELESS_VOID_FUNCTION_OBJ_INVOKER \
- BOOST_JOIN(stateless_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_STATELESS_FUNCTION_OBJ_INVOKER \
- BOOST_JOIN(get_stateless_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
namespace boost {
namespace detail {
>
struct BOOST_FUNCTION_FUNCTION_INVOKER
{
- static R invoke(any_pointer function_ptr BOOST_FUNCTION_COMMA
+ static R invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA
BOOST_FUNCTION_PARMS)
{
FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr);
>
struct BOOST_FUNCTION_VOID_FUNCTION_INVOKER
{
- static unusable invoke(any_pointer function_ptr BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_PARMS)
+ 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);
- f(BOOST_FUNCTION_ARGS);
- return unusable();
+ BOOST_FUNCTION_RETURN(f(BOOST_FUNCTION_ARGS));
}
};
>
struct BOOST_FUNCTION_FUNCTION_OBJ_INVOKER
{
- static R invoke(any_pointer function_obj_ptr BOOST_FUNCTION_COMMA
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
BOOST_FUNCTION_PARMS)
{
- FunctionObj* f = (FunctionObj*)(function_obj_ptr.obj_ptr);
+ 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);
}
};
>
struct BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER
{
- static unusable invoke(any_pointer function_obj_ptr
- BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_PARMS)
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
{
- FunctionObj* f = (FunctionObj*)(function_obj_ptr.obj_ptr);
- (*f)(BOOST_FUNCTION_ARGS);
- return unusable();
+ 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));
}
};
typename R BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_PARMS
>
- struct BOOST_FUNCTION_STATELESS_FUNCTION_OBJ_INVOKER
+ struct BOOST_FUNCTION_FUNCTION_REF_INVOKER
{
- static R invoke(any_pointer BOOST_FUNCTION_COMMA BOOST_FUNCTION_PARMS)
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
{
- FunctionObj f = FunctionObj();
- return f(BOOST_FUNCTION_ARGS);
+ FunctionObj* f =
+ reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ return (*f)(BOOST_FUNCTION_ARGS);
}
};
typename R BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_PARMS
>
- struct BOOST_FUNCTION_STATELESS_VOID_FUNCTION_OBJ_INVOKER
+ struct BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER
{
- static unusable invoke(any_pointer BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_PARMS)
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
{
- FunctionObj f = FunctionObj();
- f(BOOST_FUNCTION_ARGS);
- return unusable();
+ FunctionObj* f =
+ reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));
}
};
>
struct BOOST_FUNCTION_GET_FUNCTION_INVOKER
{
- typedef typename ct_if<(is_void<R>::value),
+ typedef typename mpl::if_c<(is_void<R>::value),
BOOST_FUNCTION_VOID_FUNCTION_INVOKER<
FunctionPtr,
R BOOST_FUNCTION_COMMA
>
struct BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER
{
- typedef typename ct_if<(is_void<R>::value),
+ typedef typename mpl::if_c<(is_void<R>::value),
BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER<
FunctionObj,
R BOOST_FUNCTION_COMMA
typename R BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_PARMS
>
- struct BOOST_FUNCTION_GET_STATELESS_FUNCTION_OBJ_INVOKER
+ struct BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER
{
- typedef typename ct_if<(is_void<R>::value),
- BOOST_FUNCTION_STATELESS_VOID_FUNCTION_OBJ_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_STATELESS_FUNCTION_OBJ_INVOKER<
+ 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>
+ 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,typename Allocator>
+ BOOST_FUNCTION_VTABLE(F f, Allocator) : vtable_base(), invoker(0)
+ {
+ init_a<Allocator>(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());
+ }
+ 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 (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());
+ }
+ template<typename Allocator,typename F>
+ void init_a(F f)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ init_a<Allocator>(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>::manage;
+ }
+ template<typename Allocator,typename FunctionPtr>
+ void init_a(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_a<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;
+ }
+ }
+ 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>
+ 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 Allocator,typename MemberPtr>
+ void init_a(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_a<Allocator>(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;
+ }
+ }
+ 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
+ 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>::manage;
+ }
+ template<typename Allocator,typename FunctionObj>
+ void init_a(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_a<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);
+ }
+ 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>
+ 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 Allocator,typename FunctionObj>
+ void
+ init_a(const reference_wrapper<FunctionObj>& f, function_obj_ref_tag)
+ {
+ init(f,function_obj_ref_tag());
+ }
+
+ 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;
+ }
+ }
+ 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:
+ 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
+ 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:
- typedef typename detail::function::function_return_type<R>::type
- internal_result_type;
+#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:
template<typename Args>
struct sig
{
- typedef internal_result_type type;
+ typedef result_type type;
};
#if BOOST_FUNCTION_NUM_ARGS == 1
BOOST_STATIC_CONSTANT(int, arity = BOOST_FUNCTION_NUM_ARGS);
BOOST_FUNCTION_ARG_TYPES
-#ifndef BOOST_NO_VOID_RETURNS
- typedef R result_type;
-#else
- typedef internal_result_type result_type;
-#endif // BOOST_NO_VOID_RETURNS
- typedef Allocator allocator_type;
typedef BOOST_FUNCTION_FUNCTION self_type;
- BOOST_FUNCTION_FUNCTION() : function_base()
- , invoker(0) {}
+ BOOST_FUNCTION_FUNCTION() : function_base() { }
// MSVC chokes if the following two constructors are collapsed into
// one with a default parameter.
BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f
#ifndef BOOST_NO_SFINAE
,typename enable_if_c<
- (::boost::type_traits::ice_not<
+ (boost::type_traits::ice_not<
(is_integral<Functor>::value)>::value),
int>::type = 0
#endif // BOOST_NO_SFINAE
) :
- function_base(),
- invoker(0)
+ 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(), invoker(0) {}
+ BOOST_FUNCTION_FUNCTION(clear_type*) : function_base() { }
#else
- BOOST_FUNCTION_FUNCTION(int zero) : function_base(), invoker(0)
+ BOOST_FUNCTION_FUNCTION(int zero) : function_base()
{
BOOST_ASSERT(zero == 0);
}
#endif
- BOOST_FUNCTION_FUNCTION(const BOOST_FUNCTION_FUNCTION& f) :
- function_base(),
- invoker(0)
+ 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());
- internal_result_type result = invoker(this->functor
- BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_ARGS);
-
-#ifndef BOOST_NO_VOID_RETURNS
- return static_cast<result_type>(result);
-#else
- return result;
-#endif // BOOST_NO_VOID_RETURNS
+ 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
template<typename Functor>
#ifndef BOOST_NO_SFINAE
typename enable_if_c<
- (::boost::type_traits::ice_not<
+ (boost::type_traits::ice_not<
(is_integral<Functor>::value)>::value),
BOOST_FUNCTION_FUNCTION&>::type
#else
#endif
operator=(Functor BOOST_FUNCTION_TARGET_FIX(const &) f)
{
- self_type(f).swap(*this);
+ 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*)
if (&f == this)
return *this;
- self_type(f).swap(*this);
+ this->clear();
+ try {
+ this->assign_to_own(f);
+ } catch (...) {
+ vtable = 0;
+ throw;
+ }
return *this;
}
if (&other == this)
return;
- std::swap(this->manager, other.manager);
- std::swap(this->functor, other.functor);
- std::swap(invoker, other.invoker);
+ BOOST_FUNCTION_FUNCTION tmp = *this;
+ *this = other;
+ other = tmp;
}
// Clear out a target, if there is one
void clear()
{
- if (this->manager) {
- function_base::functor =
- this->manager(this->functor, detail::function::destroy_functor_tag);
+ if (vtable) {
+ static_cast<vtable_type*>(vtable)->clear(this->functor);
+ vtable = 0;
}
-
- this->manager = 0;
- invoker = 0;
}
#if (defined __SUNPRO_CC) && (__SUNPRO_CC <= 0x530) && !(defined BOOST_NO_COMPILER_CONFIG)
void assign_to_own(const BOOST_FUNCTION_FUNCTION& f)
{
if (!f.empty()) {
- invoker = f.invoker;
- this->manager = f.manager;
- this->functor =
- f.manager(f.functor, detail::function::clone_functor_tag);
+ 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)
{
- typedef typename detail::function::get_function_tag<Functor>::type tag;
- this->assign_to(f, tag());
+ static vtable_type stored_vtable(f);
+ if (stored_vtable.assign_to(f, functor)) vtable = &stored_vtable;
+ else vtable = 0;
}
-
- template<typename FunctionPtr>
- void assign_to(FunctionPtr f, detail::function::function_ptr_tag)
- {
- clear();
-
- if (f) {
- typedef typename detail::function::BOOST_FUNCTION_GET_FUNCTION_INVOKER<
- FunctionPtr,
- R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS
- >::type
- invoker_type;
-
- invoker = &invoker_type::invoke;
- this->manager =
- &detail::function::functor_manager<FunctionPtr, Allocator>::manage;
- this->functor =
- this->manager(detail::function::make_any_pointer(
- // should be a reinterpret cast, but some compilers
- // insist on giving cv-qualifiers to free functions
- (void (*)())(f)
- ),
- detail::function::clone_functor_tag);
- }
- }
-
-#if BOOST_FUNCTION_NUM_ARGS > 0
- template<typename MemberPtr>
- void assign_to(MemberPtr f, detail::function::member_ptr_tag)
+ template<typename Functor,typename Allocator>
+ void assign_to_a(Functor f,Allocator a)
{
- this->assign_to(mem_fn(f));
- }
-#endif // BOOST_FUNCTION_NUM_ARGS > 0
-
- template<typename FunctionObj>
- void assign_to(FunctionObj f, detail::function::function_obj_tag)
- {
- if (!detail::function::has_empty_target(addressof(f))) {
- typedef
- typename detail::function::BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
- FunctionObj,
- R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS
- >::type
- invoker_type;
-
- invoker = &invoker_type::invoke;
- this->manager = &detail::function::functor_manager<
- FunctionObj, Allocator>::manage;
-#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
- FunctionObj* new_f = static_cast<FunctionObj*>(copy);
-#else
- FunctionObj* new_f = new FunctionObj(f);
-#endif // BOOST_NO_STD_ALLOCATOR
- this->functor =
- detail::function::make_any_pointer(static_cast<void*>(new_f));
- }
- }
-
- template<typename FunctionObj>
- void assign_to(const reference_wrapper<FunctionObj>& f,
- detail::function::function_obj_ref_tag)
- {
- if (!detail::function::has_empty_target(f.get_pointer())) {
- typedef
- typename detail::function::BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
- FunctionObj,
- R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS
- >::type
- invoker_type;
-
- invoker = &invoker_type::invoke;
- this->manager = &detail::function::trivial_manager;
- this->functor =
- this->manager(
- detail::function::make_any_pointer(
- const_cast<FunctionObj*>(f.get_pointer())),
- detail::function::clone_functor_tag);
- }
+ static vtable_type stored_vtable(f,a);
+ if (stored_vtable.assign_to_a(f, functor, a)) vtable = &stored_vtable;
+ else vtable = 0;
}
-
- template<typename FunctionObj>
- void assign_to(FunctionObj, detail::function::stateless_function_obj_tag)
- {
- typedef
- typename detail::function::
- BOOST_FUNCTION_GET_STATELESS_FUNCTION_OBJ_INVOKER<
- FunctionObj,
- R BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS
- >::type
- invoker_type;
- invoker = &invoker_type::invoke;
- this->manager = &detail::function::trivial_manager;
- this->functor = detail::function::make_any_pointer(this);
- }
-
- typedef internal_result_type (*invoker_type)(detail::function::any_pointer
- BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_TEMPLATE_ARGS);
-
- invoker_type invoker;
};
- 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 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 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>
+ 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
#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() {}
function(Functor f
#ifndef BOOST_NO_SFINAE
,typename enable_if_c<
- (::boost::type_traits::ice_not<
+ (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() {}
template<typename Functor>
#ifndef BOOST_NO_SFINAE
typename enable_if_c<
- (::boost::type_traits::ice_not<
+ (boost::type_traits::ice_not<
(is_integral<Functor>::value)>::value),
self_type&>::type
#else
} // end namespace boost
// Cleanup after ourselves...
-#undef BOOST_FUNCTION_DEFAULT_ALLOCATOR
+#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_STATELESS_FUNCTION_OBJ_INVOKER
-#undef BOOST_FUNCTION_STATELESS_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_STATELESS_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_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
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