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Fix BOOST_NO_VOID_RETURNS workaround

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[SVN r26518]
This commit is contained in:
Douglas Gregor
2004-12-15 21:40:30 +00:00
parent c9d7858ff0
commit e14e57a678
1 changed files with 37 additions and 46 deletions
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83
include/boost/function/function_template.hpp
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@ -61,6 +61,14 @@
#define BOOST_FUNCTION_GET_STATELESS_FUNCTION_OBJ_INVOKER \
BOOST_JOIN(get_stateless_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
#ifndef BOOST_NO_VOID_RETURNS
# define BOOST_FUNCTION_VOID_RETURN_TYPE void
# define BOOST_FUNCTION_RETURN(X) X
#else
# define BOOST_FUNCTION_VOID_RETURN_TYPE ::boost::detail::function::unusable
# define BOOST_FUNCTION_RETURN(X) X; return BOOST_FUNCTION_VOID_RETURN_TYPE ()
#endif
namespace boost {
namespace detail {
namespace function {
@ -86,13 +94,13 @@ namespace boost {
>
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(any_pointer 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));
}
};
@ -119,14 +127,13 @@ namespace boost {
>
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(any_pointer function_obj_ptr BOOST_FUNCTION_COMMA
BOOST_FUNCTION_PARMS)
{
FunctionObj* f = (FunctionObj*)(function_obj_ptr.obj_ptr);
(*f)(BOOST_FUNCTION_ARGS);
return unusable();
BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));
}
};
@ -151,13 +158,12 @@ namespace boost {
>
struct BOOST_FUNCTION_STATELESS_VOID_FUNCTION_OBJ_INVOKER
{
static unusable invoke(any_pointer BOOST_FUNCTION_COMMA
BOOST_FUNCTION_PARMS)
static BOOST_FUNCTION_VOID_RETURN_TYPE
invoke(any_pointer BOOST_FUNCTION_COMMA BOOST_FUNCTION_PARMS)
{
FunctionObj f = FunctionObj();
f(BOOST_FUNCTION_ARGS);
return unusable();
BOOST_FUNCTION_RETURN(f(BOOST_FUNCTION_ARGS));
}
};
@ -235,8 +241,12 @@ namespace boost {
class BOOST_FUNCTION_FUNCTION : public function_base
{
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 detail::function::function_return_type<R>::type
result_type;
#endif // BOOST_NO_VOID_RETURNS
private:
struct clear_type {};
@ -248,7 +258,7 @@ namespace boost {
template<typename Args>
struct sig
{
typedef internal_result_type type;
typedef result_type type;
};
#if BOOST_FUNCTION_NUM_ARGS == 1
@ -261,11 +271,6 @@ namespace boost {
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;
@ -315,15 +320,7 @@ namespace boost {
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 invoker(this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
}
#else
result_type operator()(BOOST_FUNCTION_PARMS) const;
@ -539,9 +536,9 @@ namespace boost {
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);
typedef result_type (*invoker_type)(detail::function::any_pointer
BOOST_FUNCTION_COMMA
BOOST_FUNCTION_TEMPLATE_ARGS);
invoker_type invoker;
};
@ -573,19 +570,11 @@ namespace boost {
Allocator>
::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
}
if (this->empty())
boost::throw_exception(bad_function_call());
return invoker(this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
}
#endif
// Poison comparisons between boost::function objects of the same type.
@ -719,3 +708,5 @@ public:
#undef BOOST_FUNCTION_ARGS
#undef BOOST_FUNCTION_ARG_TYPE
#undef BOOST_FUNCTION_ARG_TYPES
#undef BOOST_FUNCTION_VOID_RETURN_TYPE
#undef BOOST_FUNCTION_RETURN