43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
// { dg-options "-std=gnu++0x" }
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// A tuple type
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template<typename... Args> struct tuple { };
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// Determine if two types are the same
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template<typename T, typename U>
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struct is_same {
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static const bool value = false;
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};
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template<typename T>
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struct is_same<T, T> {
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static const bool value = true;
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};
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// Append 'T' to the end of Tuple
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template<typename T, typename Tuple>
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struct append_to_tuple;
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template<typename T, typename... Args>
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struct append_to_tuple<T, tuple<Args...> > {
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typedef tuple<Args..., T> type;
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};
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// Reverse a sequence of arguments (and return the result as a tuple)
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template<typename... Args> struct reverse;
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template<typename T, typename... Args>
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struct reverse<T, Args...> {
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typedef typename append_to_tuple<T, typename reverse<Args...>::type>::type
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type;
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};
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template<>
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struct reverse<> {
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typedef tuple<> type;
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};
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int a0[is_same<reverse<>::type, tuple<> >::value? 1 : -1];
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int a1[is_same<reverse<int>::type, tuple<int> >::value? 1 : -1];
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int a2[is_same<reverse<char, int>::type, tuple<int, char> >::value? 1 : -1];
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int a3[is_same<reverse<char, int, long>::type, tuple<long, int, char> >::value? 1 : -1];
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