cpet/openbsd-ports
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
bc5361e4c5
openbsd-ports/devel/boost/patches/patch-boost_function_function_template_hpp
bernd 109403012c Update to boost-1.34.1. 
Initial diff from Mikko Tolmunen. Thank you!
Some corrections from brad@.

Tested by deanna@, naddy@, brad@ and myself.

ok deanna@, brad@
2008-04-03 07:44:39 +00:00

552 lines
18 KiB
Plaintext
Raw Blame History

$OpenBSD: patch-boost_function_function_template_hpp,v 1.1 2008/04/03 07:44:40 bernd Exp $
--- boost/function/function_template.hpp.orig Wed Jan 9 06:44:37 2008
+++ boost/function/function_template.hpp Wed Jan 9 06:45:08 2008
@@ -11,6 +11,11 @@
// 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)
@@ -54,12 +59,20 @@
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(member_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_MEMBER_INVOKER \
+ BOOST_JOIN(void_member_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
@@ -70,16 +83,6 @@
# 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 {
@@ -191,7 +194,45 @@ namespace boost {
}
};
+#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
@@ -254,12 +295,130 @@ namespace boost {
>::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,
+ typename Allocator>
+ 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, Allocator> 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,
+ typename Allocator>
+ 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, Allocator> 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,
+ typename Allocator>
+ 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, 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,
+ typename Allocator>
+ 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;
+ };
+ };
+
/**
* 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
+ struct BOOST_FUNCTION_VTABLE
{
#ifndef BOOST_NO_VOID_RETURNS
typedef R result_type;
@@ -272,50 +431,25 @@ namespace boost {
BOOST_FUNCTION_TEMPLATE_ARGS);
template<typename F>
- BOOST_FUNCTION_VTABLE(F f) : vtable_base(), invoker(0)
+ bool assign_to(const F& f, function_buffer& functor) const
{
- 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)
+ void clear(function_buffer& functor) const
{
- if (manager)
- manager(functor, functor, destroy_functor_tag);
+ if (base.manager)
+ base.manager(functor, functor, destroy_functor_tag);
}
-
+#ifndef BOOST_NO_PRIVATE_IN_AGGREGATE
private:
- template<typename F>
- void init(F f)
- {
- typedef typename get_function_tag<F>::type tag;
- init(f, tag());
- }
-
+#endif
// 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)
+ assign_to(FunctionPtr f, function_buffer& functor,
+ function_ptr_tag) const
{
this->clear(functor);
if (f) {
@@ -331,22 +465,13 @@ namespace boost {
// 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));
- }
-
- 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);
+ // Always use the small-object optimization for member
+ // pointers.
+ assign_functor(f, functor, mpl::true_());
return true;
} else {
return false;
@@ -355,24 +480,11 @@ namespace boost {
#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_)
+ assign_functor(const FunctionObj& f, function_buffer& functor,
+ mpl::true_) const
{
new ((void*)&functor.data) FunctionObj(f);
}
@@ -380,7 +492,8 @@ namespace boost {
// Assign to a function object allocated on the heap.
template<typename FunctionObj>
void
- assign_functor(FunctionObj f, function_buffer& functor, mpl::false_)
+ assign_functor(const FunctionObj& f, function_buffer& functor,
+ mpl::false_) const
{
#ifndef BOOST_NO_STD_ALLOCATOR
typedef typename Allocator::template rebind<FunctionObj>::other
@@ -400,7 +513,8 @@ namespace boost {
template<typename FunctionObj>
bool
- assign_to(FunctionObj f, function_buffer& functor, function_obj_tag)
+ assign_to(const FunctionObj& f, function_buffer& functor,
+ function_obj_tag) const
{
if (!boost::detail::function::has_empty_target(boost::addressof(f))) {
assign_functor(f, functor,
@@ -413,24 +527,9 @@ namespace boost {
// 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)
+ 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
@@ -445,6 +544,7 @@ namespace boost {
}
public:
+ vtable_base base;
invoker_type invoker;
};
} // end namespace function
@@ -456,6 +556,17 @@ namespace boost {
typename Allocator = BOOST_FUNCTION_DEFAULT_ALLOCATOR
>
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
@@ -537,7 +648,7 @@ namespace boost {
if (this->empty())
boost::throw_exception(bad_function_call());
- return static_cast<vtable_type*>(vtable)->invoker
+ return reinterpret_cast<const vtable_type*>(vtable)->invoker
(this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
}
#else
@@ -561,12 +672,16 @@ namespace boost {
operator=(Functor BOOST_FUNCTION_TARGET_FIX(const &) f)
{
this->clear();
+#ifndef BOOST_NO_EXCEPTIONS
try {
this->assign_to(f);
} catch (...) {
vtable = 0;
throw;
}
+#else
+ this->assign_to(f);
+#endif
return *this;
}
@@ -592,12 +707,16 @@ namespace boost {
return *this;
this->clear();
+#ifndef BOOST_NO_EXCEPTIONS
try {
this->assign_to_own(f);
} catch (...) {
vtable = 0;
throw;
}
+#else
+ this->assign_to_own(f);
+#endif
return *this;
}
@@ -615,7 +734,7 @@ namespace boost {
void clear()
{
if (vtable) {
- static_cast<vtable_type*>(vtable)->clear(this->functor);
+ reinterpret_cast<const vtable_type*>(vtable)->clear(this->functor);
vtable = 0;
}
}
@@ -650,10 +769,24 @@ namespace boost {
}
template<typename Functor>
- void assign_to(Functor f)
+ void assign_to(const Functor& f)
{
- static vtable_type stored_vtable(f);
- if (stored_vtable.assign_to(f, functor)) vtable = &stored_vtable;
+ 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, Allocator>
+ handler_type;
+
+ typedef typename handler_type::invoker_type invoker_type;
+ typedef typename handler_type::manager_type manager_type;
+
+ static const vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to(f, functor)) vtable = &stored_vtable.base;
else vtable = 0;
}
};
@@ -688,7 +821,7 @@ namespace boost {
if (this->empty())
boost::throw_exception(bad_function_call());
- return static_cast<vtable_type*>(vtable)->invoker
+ return reinterpret_cast<const vtable_type*>(vtable)->invoker
(this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
}
#endif
@@ -798,21 +931,14 @@ class function<BOOST_FUNCTION_PARTIAL_SPEC, Allocator>
}
};
-#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_GET_INVOKER
#undef BOOST_FUNCTION_DEFAULT_ALLOCATOR
#undef BOOST_FUNCTION_COMMA
#undef BOOST_FUNCTION_FUNCTION
@@ -822,10 +948,12 @@ class function<BOOST_FUNCTION_PARTIAL_SPEC, Allocator>
#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_MEMBER_INVOKER
#undef BOOST_FUNCTION_TEMPLATE_PARMS
#undef BOOST_FUNCTION_TEMPLATE_ARGS
#undef BOOST_FUNCTION_PARMS
@@ -835,3 +963,7 @@ class function<BOOST_FUNCTION_PARTIAL_SPEC, Allocator>
#undef BOOST_FUNCTION_ARG_TYPES
#undef BOOST_FUNCTION_VOID_RETURN_TYPE
#undef BOOST_FUNCTION_RETURN
+
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif
Reference in New Issue View Git Blame Copy Permalink