// Boost.Function library
-// Copyright (C) 2001 Doug Gregor (gregod@cs.rpi.edu)
-//
-// Permission to copy, use, sell and distribute this software is granted
-// provided this copyright notice appears in all copies.
-// Permission to modify the code and to distribute modified code is granted
-// provided this copyright notice appears in all copies, and a notice
-// that the code was modified is included with the copyright notice.
-//
-// This software is provided "as is" without express or implied warranty,
-// and with no claim as to its suitability for any purpose.
+// Copyright Douglas Gregor 2001-2006. Use, modification and
+// distribution is subject to the Boost Software License, Version
+// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
// For more information, see http://www.boost.org
// Note: this header is a header template and must NOT have multiple-inclusion
-// protection.
+// protection.
+#include <boost/function/detail/prologue.hpp>
-#ifndef BOOST_FUNCTION_FUNCTION_TEMPLATE_HPP
-#define BOOST_FUNCTION_FUNCTION_TEMPLATE_HPP
-# include <cassert>
-# include <algorithm>
-# include <boost/config.hpp>
-# include <boost/function/function_base.hpp>
-# include <boost/mem_fn.hpp>
-#endif // BOOST_FUNCTION_FUNCTION_TEMPLATE_HPP
+#define BOOST_FUNCTION_TEMPLATE_PARMS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, typename T)
+
+#define BOOST_FUNCTION_TEMPLATE_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, T)
+
+#define BOOST_FUNCTION_PARM(J,I,D) BOOST_PP_CAT(T,I) BOOST_PP_CAT(a,I)
+
+#define BOOST_FUNCTION_PARMS BOOST_PP_ENUM(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_PARM,BOOST_PP_EMPTY)
+
+#define BOOST_FUNCTION_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, a)
+
+#define BOOST_FUNCTION_ARG_TYPE(J,I,D) \
+ typedef BOOST_PP_CAT(T,I) BOOST_PP_CAT(BOOST_PP_CAT(arg, BOOST_PP_INC(I)),_type);
+
+#define BOOST_FUNCTION_ARG_TYPES BOOST_PP_REPEAT(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_ARG_TYPE,BOOST_PP_EMPTY)
// Type of the default allocator
#ifndef BOOST_NO_STD_ALLOCATOR
// Comma if nonzero number of arguments
#if BOOST_FUNCTION_NUM_ARGS == 0
-# define BOOST_FUNCTION_COMMA
+# define BOOST_FUNCTION_COMMA
#else
# define BOOST_FUNCTION_COMMA ,
#endif // BOOST_FUNCTION_NUM_ARGS > 0
#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)
+ 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_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,
+ typename Allocator>
+ struct BOOST_FUNCTION_VTABLE : vtable_base
+ {
+#ifndef BOOST_NO_VOID_RETURNS
+ typedef R result_type;
+#else
+ typedef typename function_return_type<R>::type result_type;
+#endif // BOOST_NO_VOID_RETURNS
+
+ typedef result_type (*invoker_type)(function_buffer&
+ BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS);
+
+ template<typename F>
+ BOOST_FUNCTION_VTABLE(F f) : vtable_base(), invoker(0)
+ {
+ init(f);
+ }
+
+ template<typename F>
+ bool assign_to(F f, function_buffer& functor)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ return assign_to(f, functor, tag());
+ }
+
+ void clear(function_buffer& functor)
+ {
+ if (manager)
+ manager(functor, functor, destroy_functor_tag);
+ }
+
+ private:
+ template<typename F>
+ void init(F f)
+ {
+ typedef typename get_function_tag<F>::type tag;
+ init(f, tag());
+ }
+
+ // Function pointers
+ template<typename FunctionPtr>
+ void init(FunctionPtr /*f*/, function_ptr_tag)
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ actual_invoker_type;
+
+ invoker = &actual_invoker_type::invoke;
+ manager = &functor_manager<FunctionPtr, Allocator>::manage;
+ }
+
+ template<typename FunctionPtr>
+ bool
+ assign_to(FunctionPtr f, function_buffer& functor, function_ptr_tag)
+ {
+ this->clear(functor);
+ if (f) {
+ // should be a reinterpret cast, but some compilers insist
+ // on giving cv-qualifiers to free functions
+ functor.func_ptr = (void (*)())(f);
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Member pointers
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ template<typename MemberPtr>
+ void init(MemberPtr f, member_ptr_tag)
+ {
+ // DPG TBD: Add explicit support for member function
+ // objects, so we invoke through mem_fn() but we retain the
+ // right target_type() values.
+ this->init(mem_fn(f));
+ }
+
+ template<typename MemberPtr>
+ bool assign_to(MemberPtr f, function_buffer& functor, member_ptr_tag)
+ {
+ // DPG TBD: Add explicit support for member function
+ // objects, so we invoke through mem_fn() but we retain the
+ // right target_type() values.
+ if (f) {
+ this->assign_to(mem_fn(f), functor);
+ return true;
+ } else {
+ return false;
+ }
+ }
+#endif // BOOST_FUNCTION_NUM_ARGS > 0
+
+ // Function objects
+ template<typename FunctionObj>
+ void init(FunctionObj /*f*/, function_obj_tag)
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ actual_invoker_type;
+
+ invoker = &actual_invoker_type::invoke;
+ manager = &functor_manager<FunctionObj, Allocator>::manage;
+ }
+
+ // Assign to a function object using the small object optimization
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::true_)
+ {
+ new ((void*)&functor.data) FunctionObj(f);
+ }
+
+ // Assign to a function object allocated on the heap.
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::false_)
+ {
+#ifndef BOOST_NO_STD_ALLOCATOR
+ typedef typename Allocator::template rebind<FunctionObj>::other
+ allocator_type;
+ typedef typename allocator_type::pointer pointer_type;
+
+ allocator_type allocator;
+ pointer_type copy = allocator.allocate(1);
+ allocator.construct(copy, f);
+
+ // Get back to the original pointer type
+ functor.obj_ptr = static_cast<FunctionObj*>(copy);
+# else
+ functor.obj_ptr = new FunctionObj(f);
+# endif // BOOST_NO_STD_ALLOCATOR
+ }
+
+ template<typename FunctionObj>
+ bool
+ assign_to(FunctionObj f, function_buffer& functor, function_obj_tag)
+ {
+ if (!boost::detail::function::has_empty_target(boost::addressof(f))) {
+ assign_functor(f, functor,
+ mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>());
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Reference to a function object
+ template<typename FunctionObj>
+ void
+ init(const reference_wrapper<FunctionObj>& /*f*/, function_obj_ref_tag)
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ actual_invoker_type;
+
+ invoker = &actual_invoker_type::invoke;
+ manager = &reference_manager<FunctionObj>::get;
+ }
+
+ template<typename FunctionObj>
+ bool
+ assign_to(const reference_wrapper<FunctionObj>& f,
+ function_buffer& functor, function_obj_ref_tag)
+ {
+ if (!boost::detail::function::has_empty_target(f.get_pointer())) {
+ // DPG TBD: We might need to detect constness of
+ // FunctionObj to assign into obj_ptr or const_obj_ptr to
+ // be truly legit, but no platform in existence makes
+ // const void* different from void*.
+ functor.const_obj_ptr = f.get_pointer();
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ public:
+ invoker_type invoker;
+ };
} // end namespace function
} // end namespace detail
template<
typename R BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_PARMS,
- typename Policy = empty_function_policy,
- typename Mixin = empty_function_mixin,
typename Allocator = BOOST_FUNCTION_DEFAULT_ALLOCATOR
>
- class BOOST_FUNCTION_FUNCTION : public function_base, public Mixin
+ class BOOST_FUNCTION_FUNCTION : public function_base
{
- typedef typename detail::function::function_return_type<R>::type
- internal_result_type;
+ public:
+#ifndef BOOST_NO_VOID_RETURNS
+ typedef R result_type;
+#else
+ typedef typename boost::detail::function::function_return_type<R>::type
+ result_type;
+#endif // BOOST_NO_VOID_RETURNS
+
+ private:
+ typedef boost::detail::function::BOOST_FUNCTION_VTABLE<
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS, Allocator>
+ vtable_type;
+
+ struct clear_type {};
public:
BOOST_STATIC_CONSTANT(int, args = BOOST_FUNCTION_NUM_ARGS);
-
+
+ // add signature for boost::lambda
+ template<typename Args>
+ struct sig
+ {
+ typedef result_type type;
+ };
+
#if BOOST_FUNCTION_NUM_ARGS == 1
typedef T0 argument_type;
#elif BOOST_FUNCTION_NUM_ARGS == 2
typedef T1 second_argument_type;
#endif
-#ifndef BOOST_NO_VOID_RETURNS
- typedef R result_type;
-#else
- typedef internal_result_type result_type;
-#endif // BOOST_NO_VOID_RETURNS
- typedef Policy policy_type;
- typedef Mixin mixin_type;
+ 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(), Mixin(), invoker(0) {}
-
- explicit BOOST_FUNCTION_FUNCTION(const Mixin& m) :
- function_base(), Mixin(m), invoker(0)
- {
- }
+ 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) :
- function_base(), Mixin(), invoker(0)
+ 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>
- BOOST_FUNCTION_FUNCTION(Functor f, const Mixin& m) :
- function_base(), Mixin(m), invoker(0)
+#ifndef BOOST_NO_SFINAE
+ BOOST_FUNCTION_FUNCTION(clear_type*) : function_base() { }
+#else
+ BOOST_FUNCTION_FUNCTION(int zero) : function_base()
{
- this->assign_to(f);
+ BOOST_ASSERT(zero == 0);
}
+#endif
- BOOST_FUNCTION_FUNCTION(const BOOST_FUNCTION_FUNCTION& f) :
- function_base(), Mixin(static_cast<const Mixin&>(f)), 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
{
- assert(!this->empty());
+ if (this->empty())
+ boost::throw_exception(bad_function_call());
- policy_type policy;
- policy.precall(this);
-
- internal_result_type result = invoker(function_base::functor
- BOOST_FUNCTION_COMMA
- BOOST_FUNCTION_ARGS);
-
- policy.postcall(this);
-#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
// the return type of these assignment operators, but Borland C++ cannot
- // handle BOOST_FUNCTION_FUNCTION as the type of the temporary to
+ // handle BOOST_FUNCTION_FUNCTION as the type of the temporary to
// construct.
template<typename Functor>
- BOOST_FUNCTION_FUNCTION&
+#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)
{
- self_type(f, static_cast<const Mixin&>(*this)).swap(*this);
+ this->clear();
+ try {
+ this->assign_to(f);
+ } catch (...) {
+ vtable = 0;
+ throw;
+ }
return *this;
}
- template<typename Functor>
- void set(Functor BOOST_FUNCTION_TARGET_FIX(const &) f)
+#ifndef BOOST_NO_SFINAE
+ BOOST_FUNCTION_FUNCTION& operator=(clear_type*)
{
- self_type(f, static_cast<const Mixin&>(*this)).swap(*this);
+ this->clear();
+ return *this;
}
-
- // Assignment from another BOOST_FUNCTION_FUNCTION
- BOOST_FUNCTION_FUNCTION& operator=(const BOOST_FUNCTION_FUNCTION& f)
+#else
+ BOOST_FUNCTION_FUNCTION& operator=(int zero)
{
- if (&f == this)
- return *this;
-
- self_type(f).swap(*this);
+ BOOST_ASSERT(zero == 0);
+ this->clear();
return *this;
}
+#endif
// Assignment from another BOOST_FUNCTION_FUNCTION
- void set(const BOOST_FUNCTION_FUNCTION& f)
+ BOOST_FUNCTION_FUNCTION& operator=(const BOOST_FUNCTION_FUNCTION& f)
{
if (&f == this)
- return;
+ return *this;
- self_type(f).swap(*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;
- std::swap(function_base::manager, other.manager);
- std::swap(function_base::functor, other.functor);
- std::swap(invoker, other.invoker);
- std::swap(static_cast<Mixin&>(*this), static_cast<Mixin&>(other));
+ BOOST_FUNCTION_FUNCTION tmp = *this;
+ *this = other;
+ other = tmp;
}
// Clear out a target, if there is one
void clear()
{
- if (function_base::manager) {
- function_base::functor =
- function_base::manager(function_base::functor,
- detail::function::destroy_functor_tag);
+ if (vtable) {
+ static_cast<vtable_type*>(vtable)->clear(this->functor);
+ vtable = 0;
}
-
- function_base::manager = 0;
- invoker = 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()) {
- invoker = f.invoker;
- function_base::manager = f.manager;
- function_base::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;
- function_base::manager =
- &detail::function::functor_manager<FunctionPtr, Allocator>::manage;
- function_base::functor =
- function_base::manager(detail::function::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)
- {
- 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;
- function_base::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
- function_base::functor =
- detail::function::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;
- function_base::manager = &detail::function::trivial_manager;
- function_base::functor =
- function_base::manager(
- detail::function::any_pointer(
- const_cast<FunctionObj*>(f.get_pointer())),
- detail::function::clone_functor_tag);
- }
- }
-
- 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;
- function_base::manager = &detail::function::trivial_manager;
- function_base::functor = detail::function::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 Policy, typename Mixin, typename Allocator>
+ typename Allocator>
inline void swap(BOOST_FUNCTION_FUNCTION<
R BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_ARGS ,
- Policy,
- Mixin,
Allocator
>& f1,
BOOST_FUNCTION_FUNCTION<
- R BOOST_FUNCTION_COMMA
+ R BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_ARGS,
- Policy,
- Mixin,
Allocator
>& f2)
{
f1.swap(f2);
}
-}
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ typename BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS,
+ Allocator>::result_type
+ BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS,
+
+ Allocator>
+ ::operator()(BOOST_FUNCTION_PARMS) const
+ {
+ if (this->empty())
+ boost::throw_exception(bad_function_call());
+
+ return static_cast<vtable_type*>(vtable)->invoker
+ (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
+ }
+#endif
+
+// Poison comparisons between boost::function objects of the same type.
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS ,
+ typename Allocator>
+ void operator==(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&);
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS ,
+ typename Allocator>
+ void operator!=(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS ,
+ Allocator>&);
+
+#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
+
+#if BOOST_FUNCTION_NUM_ARGS == 0
+#define BOOST_FUNCTION_PARTIAL_SPEC R (void)
+#else
+#define BOOST_FUNCTION_PARTIAL_SPEC R (BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS,T))
+#endif
+
+template<typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+class function<BOOST_FUNCTION_PARTIAL_SPEC, Allocator>
+ : public BOOST_FUNCTION_FUNCTION<R, BOOST_FUNCTION_TEMPLATE_ARGS
+ BOOST_FUNCTION_COMMA Allocator>
+{
+ typedef BOOST_FUNCTION_FUNCTION<R, BOOST_FUNCTION_TEMPLATE_ARGS
+ BOOST_FUNCTION_COMMA Allocator> base_type;
+ typedef function self_type;
+
+ struct clear_type {};
+
+public:
+ typedef typename base_type::allocator_type allocator_type;
+
+ function() : base_type() {}
+
+ template<typename Functor>
+ function(Functor f
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (boost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif
+ ) :
+ base_type(f)
+ {
+ }
+
+#ifndef BOOST_NO_SFINAE
+ function(clear_type*) : base_type() {}
+#endif
+
+ function(const self_type& f) : base_type(static_cast<const base_type&>(f)){}
+
+ function(const base_type& f) : base_type(static_cast<const base_type&>(f)){}
+
+ self_type& operator=(const self_type& f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+ template<typename Functor>
+#ifndef BOOST_NO_SFINAE
+ typename enable_if_c<
+ (boost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ self_type&>::type
+#else
+ self_type&
+#endif
+ operator=(Functor f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+#ifndef BOOST_NO_SFINAE
+ self_type& operator=(clear_type*)
+ {
+ this->clear();
+ return *this;
+ }
+#endif
+
+ self_type& operator=(const base_type& f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+};
+
+#undef BOOST_FUNCTION_PARTIAL_SPEC
+#endif // have partial specialization
+
+} // end namespace boost
// Cleanup after ourselves...
+#undef BOOST_FUNCTION_VTABLE
#undef BOOST_FUNCTION_DEFAULT_ALLOCATOR
#undef BOOST_FUNCTION_COMMA
#undef BOOST_FUNCTION_FUNCTION
#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_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
projects / lyx.git / blobdiff