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Don't fail on compilers without partial specialization (but don't allow the new syntax either)

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[SVN r14535]
This commit is contained in:
Douglas Gregor
2002-07-19 19:41:53 +00:00
parent 97f72b7f8b
commit a0bd17560f
1 changed files with 22 additions and 15 deletions
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37
include/boost/function.hpp
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@ -38,10 +38,10 @@
namespace boost { namespace boost {
namespace detail { namespace detail {
namespace function { namespace function {
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template<typename Signature> template<typename Signature>
struct function_traits struct function_traits
{ {
BOOST_STATIC_CONSTANT(int, arity = 0);
typedef void result_type; typedef void result_type;
typedef void arg1_type; typedef void arg1_type;
typedef void arg2_type; typedef void arg2_type;
@ -58,7 +58,6 @@ namespace boost {
template<typename R> template<typename R>
struct function_traits<R (*)(void)> struct function_traits<R (*)(void)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 0);
typedef R result_type; typedef R result_type;
typedef unusable arg1_type; typedef unusable arg1_type;
typedef unusable arg2_type; typedef unusable arg2_type;
@ -75,7 +74,6 @@ namespace boost {
template<typename R, typename T1> template<typename R, typename T1>
struct function_traits<R (*)(T1)> struct function_traits<R (*)(T1)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 1);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef unusable arg2_type; typedef unusable arg2_type;
@ -92,7 +90,6 @@ namespace boost {
template<typename R, typename T1, typename T2> template<typename R, typename T1, typename T2>
struct function_traits<R (*)(T1, T2)> struct function_traits<R (*)(T1, T2)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 2);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -109,7 +106,6 @@ namespace boost {
template<typename R, typename T1, typename T2, typename T3> template<typename R, typename T1, typename T2, typename T3>
struct function_traits<R (*)(T1, T2, T3)> struct function_traits<R (*)(T1, T2, T3)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 3);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -126,7 +122,6 @@ namespace boost {
template<typename R, typename T1, typename T2, typename T3, typename T4> template<typename R, typename T1, typename T2, typename T3, typename T4>
struct function_traits<R (*)(T1, T2, T3, T4)> struct function_traits<R (*)(T1, T2, T3, T4)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 4);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -144,7 +139,6 @@ namespace boost {
typename T5> typename T5>
struct function_traits<R (*)(T1, T2, T3, T4, T5)> struct function_traits<R (*)(T1, T2, T3, T4, T5)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 5);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -162,7 +156,6 @@ namespace boost {
typename T5, typename T6> typename T5, typename T6>
struct function_traits<R (*)(T1, T2, T3, T4, T5, T6)> struct function_traits<R (*)(T1, T2, T3, T4, T5, T6)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 6);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -180,7 +173,6 @@ namespace boost {
typename T5, typename T6, typename T7> typename T5, typename T6, typename T7>
struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7)> struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 7);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -198,7 +190,6 @@ namespace boost {
typename T5, typename T6, typename T7, typename T8> typename T5, typename T6, typename T7, typename T8>
struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8)> struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 8);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -216,7 +207,6 @@ namespace boost {
typename T5, typename T6, typename T7, typename T8, typename T9> typename T5, typename T6, typename T7, typename T8, typename T9>
struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9)> struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 9);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -235,7 +225,6 @@ namespace boost {
typename T10> typename T10>
struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)> struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)>
{ {
BOOST_STATIC_CONSTANT(int, arity = 10);
typedef R result_type; typedef R result_type;
typedef T1 arg1_type; typedef T1 arg1_type;
typedef T2 arg2_type; typedef T2 arg2_type;
@ -248,6 +237,7 @@ namespace boost {
typedef T9 arg9_type; typedef T9 arg9_type;
typedef T10 arg10_type; typedef T10 arg10_type;
}; };
#endif
// Choose the appropriate underlying implementation // Choose the appropriate underlying implementation
template<int Args> struct real_get_function_impl {}; template<int Args> struct real_get_function_impl {};
@ -536,7 +526,7 @@ namespace boost {
template<typename T1, typename T2> template<typename T1, typename T2>
struct is_not_same struct is_not_same
{ {
BOOST_STATIC_CONSTANT(bool, value = !(is_same<T1, T2>::value)); BOOST_STATIC_CONSTANT(bool, value = !(is_same<T1, T2>::value));
}; };
template< template<
@ -557,6 +547,7 @@ namespace boost {
> >
class get_function_impl class get_function_impl
{ {
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
BOOST_STATIC_CONSTANT(bool, encoded_param = is_function<InR>::value); BOOST_STATIC_CONSTANT(bool, encoded_param = is_function<InR>::value);
typedef function_traits<InR*> traits; typedef function_traits<InR*> traits;
public: public:
@ -617,7 +608,23 @@ namespace boost {
>::value), >::value),
InT3, InT3,
InAllocator>::type Allocator; InAllocator>::type Allocator;
#else
public:
typedef InR R;
typedef InT1 T1;
typedef InT2 T2;
typedef InT3 T3;
typedef InT4 T4;
typedef InT5 T5;
typedef InT6 T6;
typedef InT7 T7;
typedef InT8 T8;
typedef InT9 T9;
typedef InT10 T10;
typedef InPolicy Policy;
typedef InMixin Mixin;
typedef InAllocator Allocator;
#endif
typedef typename real_get_function_impl< typedef typename real_get_function_impl<
(count_used_args<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>::value) (count_used_args<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>::value)
>::template params<R, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, >::template params<R, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10,
@ -812,6 +819,6 @@ namespace boost {
{ {
f1.swap(f2); f1.swap(f2);
} }
} } // end namespace boost
#endif #endif