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Use function_traits in type_traits library
[SVN r14675]
This commit is contained in:
Douglas Gregor
@ -39,207 +39,6 @@
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namespace boost {
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namespace detail {
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namespace function {
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#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template<typename Signature>
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struct function_traits
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{
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typedef void result_type;
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typedef void arg1_type;
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typedef void arg2_type;
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typedef void arg3_type;
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typedef void arg4_type;
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typedef void arg5_type;
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typedef void arg6_type;
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typedef void arg7_type;
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typedef void arg8_type;
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typedef void arg9_type;
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typedef void arg10_type;
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};
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template<typename R>
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struct function_traits<R (*)(void)>
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{
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typedef R result_type;
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typedef unusable arg1_type;
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typedef unusable arg2_type;
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typedef unusable arg3_type;
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typedef unusable arg4_type;
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typedef unusable arg5_type;
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typedef unusable arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1>
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struct function_traits<R (*)(T1)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef unusable arg2_type;
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typedef unusable arg3_type;
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typedef unusable arg4_type;
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typedef unusable arg5_type;
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typedef unusable arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2>
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struct function_traits<R (*)(T1, T2)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef unusable arg3_type;
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typedef unusable arg4_type;
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typedef unusable arg5_type;
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typedef unusable arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3>
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struct function_traits<R (*)(T1, T2, T3)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef unusable arg4_type;
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typedef unusable arg5_type;
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typedef unusable arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4>
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struct function_traits<R (*)(T1, T2, T3, T4)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef unusable arg5_type;
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typedef unusable arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4,
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typename T5>
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struct function_traits<R (*)(T1, T2, T3, T4, T5)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef T5 arg5_type;
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typedef unusable arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4,
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typename T5, typename T6>
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struct function_traits<R (*)(T1, T2, T3, T4, T5, T6)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef T5 arg5_type;
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typedef T6 arg6_type;
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typedef unusable arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4,
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typename T5, typename T6, typename T7>
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struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef T5 arg5_type;
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typedef T6 arg6_type;
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typedef T7 arg7_type;
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typedef unusable arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4,
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typename T5, typename T6, typename T7, typename T8>
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struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef T5 arg5_type;
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typedef T6 arg6_type;
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typedef T7 arg7_type;
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typedef T8 arg8_type;
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typedef unusable arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4,
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typename T5, typename T6, typename T7, typename T8, typename T9>
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struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef T5 arg5_type;
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typedef T6 arg6_type;
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typedef T7 arg7_type;
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typedef T8 arg8_type;
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typedef T9 arg9_type;
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typedef unusable arg10_type;
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};
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template<typename R, typename T1, typename T2, typename T3, typename T4,
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typename T5, typename T6, typename T7, typename T8, typename T9,
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typename T10>
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struct function_traits<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)>
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{
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typedef R result_type;
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typedef T1 arg1_type;
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typedef T2 arg2_type;
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typedef T3 arg3_type;
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typedef T4 arg4_type;
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typedef T5 arg5_type;
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typedef T6 arg6_type;
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typedef T7 arg7_type;
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typedef T8 arg8_type;
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typedef T9 arg9_type;
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typedef T10 arg10_type;
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};
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#endif
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// Choose the appropriate underlying implementation
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template<int Args> struct real_get_function_impl {};
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@ -530,6 +329,205 @@ namespace boost {
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BOOST_STATIC_CONSTANT(bool, value = !(is_same<T1, T2>::value));
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};
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#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template<bool GetIt, typename Traits>
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struct get_arg1_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg1_type<true, Traits>
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{
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typedef typename Traits::arg1_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg2_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg2_type<true, Traits>
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{
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typedef typename Traits::arg2_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg3_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg3_type<true, Traits>
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{
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typedef typename Traits::arg3_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg4_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg4_type<true, Traits>
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{
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typedef typename Traits::arg4_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg5_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg5_type<true, Traits>
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{
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typedef typename Traits::arg5_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg6_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg6_type<true, Traits>
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{
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typedef typename Traits::arg6_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg7_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg7_type<true, Traits>
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{
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typedef typename Traits::arg7_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg8_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg8_type<true, Traits>
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{
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typedef typename Traits::arg8_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg9_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg9_type<true, Traits>
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{
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typedef typename Traits::arg9_type type;
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};
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template<bool GetIt, typename Traits>
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struct get_arg10_type
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{
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typedef unusable type;
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};
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template<typename Traits>
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struct get_arg10_type<true, Traits>
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{
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typedef typename Traits::arg10_type type;
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};
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template<bool IsFunction,
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typename InR,
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typename InT1,
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typename InT2,
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typename InT3,
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typename InT4,
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typename InT5,
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typename InT6,
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typename InT7,
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typename InT8,
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typename InT9,
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typename InT10,
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typename InPolicy,
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typename InMixin,
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typename InAllocator>
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struct maybe_decode_function_args
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{
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// Not a function, so just map the types directly
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typedef InR R;
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typedef InT1 T1;
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typedef InT2 T2;
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typedef InT3 T3;
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typedef InT4 T4;
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typedef InT5 T5;
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typedef InT6 T6;
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typedef InT7 T7;
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typedef InT8 T8;
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typedef InT9 T9;
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typedef InT10 T10;
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typedef InPolicy Policy;
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typedef InMixin Mixin;
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typedef InAllocator Allocator;
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};
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template<typename InR,
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typename InT1,
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typename InT2,
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typename InT3,
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typename InT4,
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typename InT5,
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typename InT6,
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typename InT7,
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typename InT8,
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typename InT9,
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typename InT10,
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typename InPolicy,
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typename InMixin,
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typename InAllocator>
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struct maybe_decode_function_args<true, InR, InT1, InT2, InT3, InT4,
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InT5, InT6, InT7, InT8, InT9, InT10,
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InPolicy, InMixin, InAllocator>
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{
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typedef function_traits<InR> traits;
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typedef typename traits::result_type R;
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typedef typename get_arg1_type<(traits::arity >= 1), traits>::type T1;
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typedef typename get_arg2_type<(traits::arity >= 2), traits>::type T2;
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typedef typename get_arg3_type<(traits::arity >= 3), traits>::type T3;
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typedef typename get_arg4_type<(traits::arity >= 4), traits>::type T4;
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typedef typename get_arg5_type<(traits::arity >= 5), traits>::type T5;
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typedef typename get_arg6_type<(traits::arity >= 6), traits>::type T6;
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typedef typename get_arg7_type<(traits::arity >= 7), traits>::type T7;
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typedef typename get_arg8_type<(traits::arity >= 8), traits>::type T8;
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typedef typename get_arg9_type<(traits::arity >= 9), traits>::type T9;
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typedef typename get_arg10_type<(traits::arity >= 10), traits>::type T10;
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typedef typename ct_if<(is_same<InT1, unusable>::value),
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empty_function_policy,
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InT1>::type Policy;
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typedef typename ct_if<(is_same<InT2, unusable>::value),
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empty_function_mixin,
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InT2>::type Mixin;
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typedef typename ct_if<(is_same<InT3, unusable>::value),
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std::allocator<function_base>,
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InT3>::type Allocator;
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};
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#endif // ndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template<
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typename InR,
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typename InT1,
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@ -549,82 +547,42 @@ namespace boost {
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class get_function_impl
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{
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#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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typedef function_traits<typename add_pointer<InR>::type> traits;
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public:
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::result_type,
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InR>::type R;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg1_type,
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InT1>::type T1;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg2_type,
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InT2>::type T2;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg3_type,
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InT3>::type T3;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg4_type,
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InT4>::type T4;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg5_type,
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InT5>::type T5;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg6_type,
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InT6>::type T6;
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typedef typename ct_if<(is_function<InR>::value),
|
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typename traits::arg7_type,
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InT7>::type T7;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg8_type,
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||||
InT8>::type T8;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg9_type,
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InT9>::type T9;
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typedef typename ct_if<(is_function<InR>::value),
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typename traits::arg10_type,
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InT10>::type T10;
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typedef typename ct_if<
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||||
(type_traits::ice_and<
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||||
(is_function<InR>::value),
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||||
(is_not_same<InT1, unusable>::value)
|
||||
>::value),
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||||
InT1,
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||||
InPolicy>::type Policy;
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||||
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||||
typedef typename ct_if<
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||||
(type_traits::ice_and<
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||||
(is_function<InR>::value),
|
||||
(is_not_same<InT2, unusable>::value)
|
||||
>::value),
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||||
InT2,
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||||
InMixin>::type Mixin;
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||||
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typedef typename ct_if<
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||||
(type_traits::ice_and<
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||||
(is_function<InR>::value),
|
||||
(is_not_same<InT3, unusable>::value)
|
||||
>::value),
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||||
InT3,
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||||
InAllocator>::type Allocator;
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typedef maybe_decode_function_args<(is_function<InR>::value),
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||||
InR, InT1, InT2, InT3, InT4, InT5,
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||||
InT6, InT7, InT8, InT9, InT10,
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||||
InPolicy, InMixin, InAllocator>
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||||
decoder;
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||||
typedef typename decoder::R R;
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||||
typedef typename decoder::T1 T1;
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||||
typedef typename decoder::T2 T2;
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||||
typedef typename decoder::T3 T3;
|
||||
typedef typename decoder::T4 T4;
|
||||
typedef typename decoder::T5 T5;
|
||||
typedef typename decoder::T6 T6;
|
||||
typedef typename decoder::T7 T7;
|
||||
typedef typename decoder::T8 T8;
|
||||
typedef typename decoder::T9 T9;
|
||||
typedef typename decoder::T10 T10;
|
||||
typedef typename decoder::Policy Policy;
|
||||
typedef typename decoder::Mixin Mixin;
|
||||
typedef typename decoder::Allocator Allocator;
|
||||
#else
|
||||
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 // def BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
||||
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<
|
||||
(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,
|
||||
|
||||
Reference in New Issue
Block a user