clang/test/Modules/Inputs/cxx-templates-a.h

   1 @import cxx_templates_common;
   2
   3 template<typename T> T f() { return T(); }
   4 template<typename T> T f(T);
   5 namespace N {
   6   template<typename T> T f() { return T(); }
   7   template<typename T> T f(T);
   8 }
   9
  10 template<int N> int template_param_kinds_1();
  11 template<template<typename T, int, int> class> int template_param_kinds_2();
  12 template<template<typename T, typename U, T> class> int template_param_kinds_3();
  13
  14 template<typename T> struct SomeTemplate<T*>;
  15 template<typename T> struct SomeTemplate<T*> {};
  16 typedef SomeTemplate<int*> SomeTemplateIntPtr;
  17
  18 template<typename T> void PerformDelayedLookup(T &t) {
  19   t.f();
  20   typename T::Inner inner;
  21   FoundByADL(t);
  22 }
  23
  24 template<typename T> void PerformDelayedLookupInDefaultArgument(T &t, int a = (FoundByADL(T()), 0)) {}
  25
  26 template<typename T> struct RedeclaredAsFriend {};
  27
  28 void use_some_template_a() {
  29   SomeTemplate<char[2]> a;
  30   SomeTemplate<char[1]> b, c;
  31   b = c;
  32
  33   (void)&WithImplicitSpecialMembers<int>::n;
  34 }
  35
  36 template<int> struct MergeTemplates;
  37 MergeTemplates<0> *merge_templates_a;
  38
  39 auto enum_a_from_a = CommonTemplate<int>::a;
  40 const auto enum_c_from_a = CommonTemplate<int>::c;
  41
  42 template<int> struct UseInt;
  43 template<typename T> void UseRedeclaredEnum(UseInt<T() + CommonTemplate<char>::a>);
  44 constexpr void (*UseRedeclaredEnumA)(UseInt<1>) = UseRedeclaredEnum<int>;
  45
  46 template<typename> struct MergeSpecializations;
  47 template<typename T> struct MergeSpecializations<T*> {
  48   typedef int partially_specialized_in_a;
  49 };
  50 template<> struct MergeSpecializations<char> {
  51   typedef int explicitly_specialized_in_a;
  52 };
  53
  54 void InstantiateWithFriend(Std::WithFriend<int> wfi) {}
  55
  56 template<typename T> struct WithPartialSpecialization<T*> {
  57   typedef int type;
  58   T &f() { static T t; return t; }
  59 };
  60 typedef WithPartialSpecializationUse::type WithPartialSpecializationInstantiate;
  61 typedef WithPartialSpecialization<void(int)>::type WithPartialSpecializationInstantiate2;
  62
  63 template<> struct WithExplicitSpecialization<int> {
  64   int n;
  65   template<typename T> T &inner_template() {
  66     return n;
  67   }
  68 };
  69
  70 template<typename T> template<typename U>
  71 constexpr int Outer<T>::Inner<U>::f() { return 1; }
  72 static_assert(Outer<int>::Inner<int>::f() == 1, "");
  73
  74 template<typename T> struct MergeTemplateDefinitions {
  75   static constexpr int f();
  76   static constexpr int g();
  77 };
  78 template<typename T> constexpr int MergeTemplateDefinitions<T>::f() { return 1; }
  79
  80 template<typename T> using AliasTemplate = T;
  81
  82 template<typename T> struct PartiallyInstantiatePartialSpec {};
  83 template<typename T> struct PartiallyInstantiatePartialSpec<T*> {
  84   static T *foo() { return reinterpret_cast<T*>(0); }
  85   static T *bar() { return reinterpret_cast<T*>(0); }
  86 };
  87 typedef PartiallyInstantiatePartialSpec<int*> PartiallyInstantiatePartialSpecHelper;
  88
  89 void InstantiateWithAliasTemplate(WithAliasTemplate<int>::X<char>);
  90 inline int InstantiateWithAnonymousDeclsA(WithAnonymousDecls<int> x) { return (x.k ? x.a : x.b) + (x.k ? x.s.c : x.s.d) + x.e; }
  91 inline int InstantiateWithAnonymousDeclsB2(WithAnonymousDecls<char> x);
  92
  93
  94 template<typename T1 = int>
  95 struct MergeAnonUnionMember {
  96   MergeAnonUnionMember() { (void)values.t1; }
  97   union { int t1; } values;
  98 };
  99 inline MergeAnonUnionMember<> maum_a() { return {}; }
 100
 101 template<typename T> struct DontWalkPreviousDeclAfterMerging { struct Inner { typedef T type; }; };
 102
 103 namespace TestInjectedClassName {
 104   template<typename T> struct X { X(); };
 105   typedef X<char[1]> A;
 106 }