72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
#include <tuple>
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template <int Arg>
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class TestObj
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{
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public:
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int getArg()
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{
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return Arg;
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}
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};
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//----------------------------------------------------------------------
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// Define a template class that we can specialize with an enumeration
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//----------------------------------------------------------------------
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enum class EnumType
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{
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Member,
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Subclass
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};
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template <EnumType Arg> class EnumTemplate;
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//----------------------------------------------------------------------
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// Specialization for use when "Arg" is "EnumType::Member"
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//----------------------------------------------------------------------
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template <>
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class EnumTemplate<EnumType::Member>
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{
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public:
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EnumTemplate(int m) :
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m_member(m)
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{
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}
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int getMember() const
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{
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return m_member;
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}
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protected:
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int m_member;
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};
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//----------------------------------------------------------------------
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// Specialization for use when "Arg" is "EnumType::Subclass"
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//----------------------------------------------------------------------
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template <>
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class EnumTemplate<EnumType::Subclass> :
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public EnumTemplate<EnumType::Member>
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{
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public:
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EnumTemplate(int m) : EnumTemplate<EnumType::Member>(m)
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{
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}
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};
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template <typename FLOAT> struct T1 { FLOAT f = 1.5; };
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template <typename FLOAT> struct T2 { FLOAT f = 2.5; int i = 42; };
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template <typename FLOAT, template <typename> class ...Args> class C { std::tuple<Args<FLOAT>...> V; };
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int main(int argc, char **argv)
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{
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TestObj<1> testpos;
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TestObj<-1> testneg;
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EnumTemplate<EnumType::Member> member(123);
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EnumTemplate<EnumType::Subclass> subclass(123*2);
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C<float, T1> c1;
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C<double, T1, T2> c2;
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return testpos.getArg() - testneg.getArg() + member.getMember()*2 - subclass.getMember(); // Breakpoint 1
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}
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