clang/test/Index/index-concepts.cpp

   1 // RUN: c-index-test -test-load-source all %s -std=gnu++20 -fno-delayed-template-parsing | FileCheck %s
   2
   3 template<class T>
   4 struct type_trait {
   5     const static bool value = false;
   6 };
   7
   8 template<>
   9 struct type_trait<int> {
  10     const static bool value = true;
  11 };
  12
  13 template <class T>
  14 requires (type_trait<T>::value)
  15 // CHECK: index-concepts.cpp:[[@LINE-1]]:10: ParenExpr= Extent=[[[@LINE-1]]:10 - [[@LINE-1]]:32]
  16 // CHECK: index-concepts.cpp:[[@LINE-2]]:11: DeclRefExpr= Extent=[[[@LINE-2]]:11 - [[@LINE-2]]:31]
  17 // CHECK: index-concepts.cpp:[[@LINE-3]]:11: TemplateRef=type_trait:4:8 Extent=[[[@LINE-3]]:11 - [[@LINE-3]]:21]
  18 // CHECK: index-concepts.cpp:[[@LINE-4]]:22: TypeRef=T:13:17 Extent=[[[@LINE-4]]:22 - [[@LINE-4]]:23]
  19 void indexRequiresClause() {
  20 }
  21
  22 template<class T>
  23 requires (type_trait<T>::value)
  24 // CHECK: index-concepts.cpp:[[@LINE-1]]:10: ParenExpr= Extent=[[[@LINE-1]]:10 - [[@LINE-1]]:32]
  25 // CHECK: index-concepts.cpp:[[@LINE-2]]:11: DeclRefExpr= Extent=[[[@LINE-2]]:11 - [[@LINE-2]]:31]
  26 // CHECK: index-concepts.cpp:[[@LINE-3]]:11: TemplateRef=type_trait:4:8 Extent=[[[@LINE-3]]:11 - [[@LINE-3]]:21]
  27 // CHECK: index-concepts.cpp:[[@LINE-4]]:22: TypeRef=T:22:16 Extent=[[[@LINE-4]]:22 - [[@LINE-4]]:23]
  28 class IndexRequiresClauseInClass {};
  29
  30 template <class T>
  31 concept Con1 = type_trait<T>::value;
  32 // CHECK: index-concepts.cpp:[[@LINE-1]]:9: ConceptDecl=Con1:[[@LINE-1]]:9 (Definition) Extent=[[[@LINE-2]]:1 - [[@LINE-1]]:36]
  33 // CHECK: index-concepts.cpp:[[@LINE-3]]:17: TemplateTypeParameter=T:[[@LINE-3]]:17 (Definition) Extent=[[[@LINE-3]]:11 - [[@LINE-3]]:18] [access=public]
  34 // CHECK: index-concepts.cpp:[[@LINE-3]]:16: DeclRefExpr= Extent=[[[@LINE-3]]:16 - [[@LINE-3]]:36]
  35 // CHECK: index-concepts.cpp:[[@LINE-4]]:16: TemplateRef=type_trait:4:8 Extent=[[[@LINE-4]]:16 - [[@LINE-4]]:26]
  36 // CHECK: index-concepts.cpp:[[@LINE-5]]:27: TypeRef=T:30:17 Extent=[[[@LINE-5]]:27 - [[@LINE-5]]:28]
  37
  38 constexpr int sizeFunc() { return 4; }
  39
  40 template <class T>
  41 concept ConWithLogicalAnd = Con1<T> && sizeof(T) > sizeFunc();
  42 // CHECK: index-concepts.cpp:[[@LINE-1]]:9: ConceptDecl=ConWithLogicalAnd:[[@LINE-1]]:9 (Definition) Extent=[[[@LINE-2]]:1 - [[@LINE-1]]:62]
  43 // CHECK: index-concepts.cpp:[[@LINE-3]]:17: TemplateTypeParameter=T:[[@LINE-3]]:17 (Definition) Extent=[[[@LINE-3]]:11 - [[@LINE-3]]:18] [access=public]
  44 // CHECK: index-concepts.cpp:[[@LINE-3]]:29: BinaryOperator=&& Extent=[[[@LINE-3]]:29 - [[@LINE-3]]:62]
  45 // CHECK: index-concepts.cpp:[[@LINE-4]]:29: ConceptSpecializationExpr= Extent=[[[@LINE-4]]:29 - [[@LINE-4]]:36]
  46 // CHECK: index-concepts.cpp:[[@LINE-5]]:29: TemplateRef=Con1:31:9 Extent=[[[@LINE-5]]:29 - [[@LINE-5]]:33]
  47 // CHECK: index-concepts.cpp:[[@LINE-6]]:40: BinaryOperator=> Extent=[[[@LINE-6]]:40 - [[@LINE-6]]:62]
  48 // CHECK: index-concepts.cpp:[[@LINE-7]]:40: UnaryExpr= Extent=[[[@LINE-7]]:40 - [[@LINE-7]]:49]
  49 // CHECK: index-concepts.cpp:[[@LINE-8]]:47: TypeRef=T:40:17 Extent=[[[@LINE-8]]:47 - [[@LINE-8]]:48]
  50 // CHECK: index-concepts.cpp:[[@LINE-9]]:52: UnexposedExpr=sizeFunc:38:15 Extent=[[[@LINE-9]]:52 - [[@LINE-9]]:62]
  51 // CHECK: index-concepts.cpp:[[@LINE-10]]:52: CallExpr=sizeFunc:38:15 Extent=[[[@LINE-10]]:52 - [[@LINE-10]]:62]
  52 // CHECK: index-concepts.cpp:[[@LINE-11]]:52: UnexposedExpr=sizeFunc:38:15 Extent=[[[@LINE-11]]:52 - [[@LINE-11]]:60]
  53 // CHECK: index-concepts.cpp:[[@LINE-12]]:52: DeclRefExpr=sizeFunc:38:15 Extent=[[[@LINE-12]]:52 - [[@LINE-12]]:60]
  54
  55 namespace ns {
  56
  57 template <class T>
  58 concept ConInNamespace = sizeof(T) > 4;
  59
  60 }
  61
  62 template <class T1, class T2>
  63 concept ConTwoTemplateParams = ns::ConInNamespace<T1> && ConWithLogicalAnd<T2>;
  64 // CHECK: index-concepts.cpp:[[@LINE-1]]:9: ConceptDecl=ConTwoTemplateParams:[[@LINE-1]]:9 (Definition) Extent=[[[@LINE-2]]:1 - [[@LINE-1]]:79]
  65 // CHECK: index-concepts.cpp:[[@LINE-3]]:17: TemplateTypeParameter=T1:[[@LINE-3]]:17 (Definition) Extent=[[[@LINE-3]]:11 - [[@LINE-3]]:19] [access=public]
  66 // CHECK: index-concepts.cpp:[[@LINE-4]]:27: TemplateTypeParameter=T2:[[@LINE-4]]:27 (Definition) Extent=[[[@LINE-4]]:21 - [[@LINE-4]]:29] [access=public]
  67 // CHECK: index-concepts.cpp:[[@LINE-4]]:32: BinaryOperator=&& Extent=[[[@LINE-4]]:32 - [[@LINE-4]]:79]
  68 // CHECK: index-concepts.cpp:[[@LINE-5]]:32: ConceptSpecializationExpr= Extent=[[[@LINE-5]]:32 - [[@LINE-5]]:54]
  69 // CHECK: index-concepts.cpp:[[@LINE-6]]:32: NamespaceRef=ns:55:11 Extent=[[[@LINE-6]]:32 - [[@LINE-6]]:34]
  70 // CHECK: index-concepts.cpp:[[@LINE-7]]:36: TemplateRef=ConInNamespace:58:9 Extent=[[[@LINE-7]]:36 - [[@LINE-7]]:50]
  71 // CHECK: index-concepts.cpp:[[@LINE-8]]:58: ConceptSpecializationExpr= Extent=[[[@LINE-8]]:58 - [[@LINE-8]]:79]
  72 // CHECK: index-concepts.cpp:[[@LINE-9]]:58: TemplateRef=ConWithLogicalAnd:41:9 Extent=[[[@LINE-9]]:58 - [[@LINE-9]]:75]
  73
  74
  75 struct ConcreteType {};
  76
  77 template<class T>
  78 requires ConTwoTemplateParams<T, ConcreteType>
  79 struct UsesConceptInRequires {};
  80 // CHECK: index-concepts.cpp:[[@LINE-1]]:8: ClassTemplate=UsesConceptInRequires:[[@LINE-1]]:8 (Definition) Extent=[[[@LINE-3]]:1 - [[@LINE-1]]:32]
  81 // CHECK: index-concepts.cpp:[[@LINE-4]]:16: TemplateTypeParameter=T:[[@LINE-4]]:16 (Definition) Extent=[[[@LINE-4]]:10 - [[@LINE-4]]:17] [access=public]
  82 // CHECK: index-concepts.cpp:[[@LINE-4]]:10: ConceptSpecializationExpr= Extent=[[[@LINE-4]]:10 - [[@LINE-4]]:47]
  83 // CHECK: index-concepts.cpp:[[@LINE-5]]:10: TemplateRef=ConTwoTemplateParams:63:9 Extent=[[[@LINE-5]]:10 - [[@LINE-5]]:30]
  84 // CHECK: index-concepts.cpp:[[@LINE-6]]:31: TypeRef=T:[[@LINE-7]]:16 Extent=[[[@LINE-6]]:31 - [[@LINE-6]]:32]
  85 // CHECK: index-concepts.cpp:[[@LINE-7]]:34: TypeRef=struct ConcreteType:[[@LINE-10]]:8 Extent=[[[@LINE-7]]:34 - [[@LINE-7]]:46]
  86
  87
  88 template<ConWithLogicalAnd T>
  89 struct UsesConceptInTemplateArg {};
  90 // CHECK: index-concepts.cpp:[[@LINE-1]]:8: ClassTemplate=UsesConceptInTemplateArg:[[@LINE-1]]:8 (Definition) Extent=[[[@LINE-2]]:1 - [[@LINE-1]]:35]
  91 // CHECK: index-concepts.cpp:[[@LINE-3]]:28: TemplateTypeParameter=T:[[@LINE-3]]:28 (Definition) Extent=[[[@LINE-3]]:10 - [[@LINE-3]]:29] [access=public]
  92 // CHECK: index-concepts.cpp:[[@LINE-4]]:10: TemplateRef=ConWithLogicalAnd:41:9 Extent=[[[@LINE-4]]:10 - [[@LINE-4]]:27]
  93
  94 void usesConceptInAutoParam(ns::ConInNamespace auto x) {}
  95 // CHECK: index-concepts.cpp:[[@LINE-1]]:6: FunctionTemplate=usesConceptInAutoParam:[[@LINE-1]]:6 (Definition)
  96 // CHECK: index-concepts.cpp:[[@LINE-2]]:53: ParmDecl=x:[[@LINE-2]]:53 (Definition) Extent=[[[@LINE-2]]:29 - [[@LINE-2]]:54]
  97 // CHECK: index-concepts.cpp:[[@LINE-3]]:29: NamespaceRef=ns:55:11 Extent=[[[@LINE-3]]:29 - [[@LINE-3]]:31]
  98 // CHECK: index-concepts.cpp:[[@LINE-4]]:33: TemplateRef=ConInNamespace:58:9 Extent=[[[@LINE-4]]:33 - [[@LINE-4]]:47]
  99 // CHECK: index-concepts.cpp:[[@LINE-5]]:48: TypeRef=ns::ConInNamespace auto:[[@LINE-5]]:53 Extent=[[[@LINE-5]]:48 - [[@LINE-5]]:52]
 100 // CHECK: index-concepts.cpp:[[@LINE-6]]:56: CompoundStmt= Extent=[[[@LINE-6]]:56 - [[@LINE-6]]:58]
 101
 102
 103 template<class T>
 104 void testTrailingRequires(const T &x)
 105 requires ns::ConInNamespace<T> && ConTwoTemplateParams<T, ConcreteType> {}
 106 // CHECK: index-concepts.cpp:[[@LINE-2]]:6: FunctionTemplate=testTrailingRequires:[[@LINE-2]]:6 (Definition) Extent=[[[@LINE-3]]:1 - [[@LINE-1]]:75]
 107 // CHECK: index-concepts.cpp:[[@LINE-4]]:16: TemplateTypeParameter=T:[[@LINE-4]]:16 (Definition) Extent=[[[@LINE-4]]:10 - [[@LINE-4]]:17] [access=public]
 108 // CHECK: index-concepts.cpp:[[@LINE-4]]:36: ParmDecl=x:[[@LINE-4]]:36 (Definition) Extent=[[[@LINE-4]]:27 - [[@LINE-4]]:37]
 109 // CHECK: index-concepts.cpp:[[@LINE-5]]:33: TypeRef=T:[[@LINE-6]]:16 Extent=[[[@LINE-5]]:33 - [[@LINE-5]]:34]
 110 // CHECK: index-concepts.cpp:[[@LINE-5]]:10: ConceptSpecializationExpr= Extent=[[[@LINE-5]]:10 - [[@LINE-5]]:31]
 111 // CHECK: index-concepts.cpp:[[@LINE-6]]:10: NamespaceRef=ns:55:11 Extent=[[[@LINE-6]]:10 - [[@LINE-6]]:12]
 112 // CHECK: index-concepts.cpp:[[@LINE-7]]:14: TemplateRef=ConInNamespace:58:9 Extent=[[[@LINE-7]]:14 - [[@LINE-7]]:28]
 113 // CHECK: index-concepts.cpp:[[@LINE-8]]:29: TypeRef=T:[[@LINE-10]]:16 Extent=[[[@LINE-8]]:29 - [[@LINE-8]]:30]
 114 // CHECK: index-concepts.cpp:[[@LINE-9]]:35: ConceptSpecializationExpr= Extent=[[[@LINE-9]]:35 - [[@LINE-9]]:72]
 115 // CHECK: index-concepts.cpp:[[@LINE-10]]:35: TemplateRef=ConTwoTemplateParams:63:9 Extent=[[[@LINE-10]]:35 - [[@LINE-10]]:55]
 116 // CHECK: index-concepts.cpp:[[@LINE-11]]:56: TypeRef=T:[[@LINE-13]]:16 Extent=[[[@LINE-11]]:56 - [[@LINE-11]]:57]
 117 // CHECK: index-concepts.cpp:[[@LINE-12]]:59: TypeRef=struct ConcreteType:75:8 Extent=[[[@LINE-12]]:59 - [[@LINE-12]]:71]
 118
 119
 120 void concreteFunc(ConcreteType);
 121
 122 template<class T>
 123 void genericFunc(const T&x);
 124
 125 template<class T>
 126 concept ConWithRequires = requires(const T& x, ConcreteType value) {
 127   concreteFunc(value);
 128   genericFunc(x);
 129 };
 130 // CHECK: index-concepts.cpp:[[@LINE-4]]:9: ConceptDecl=ConWithRequires:[[@LINE-4]]:9 (Definition) Extent=[[[@LINE-5]]:1 - [[@LINE-1]]:2]
 131 // CHECK: index-concepts.cpp:[[@LINE-6]]:16: TemplateTypeParameter=T:[[@LINE-6]]:16 (Definition) Extent=[[[@LINE-6]]:10 - [[@LINE-6]]:17] [access=public]
 132 // CHECK: index-concepts.cpp:[[@LINE-6]]:27: RequiresExpr= Extent=[[[@LINE-6]]:27 - [[@LINE-3]]:2]
 133 // CHECK: index-concepts.cpp:[[@LINE-7]]:61: ParmDecl=value:[[@LINE-7]]:61 (Definition) Extent=[[[@LINE-7]]:48 - [[@LINE-7]]:66]
 134 // CHECK: index-concepts.cpp:[[@LINE-8]]:48: TypeRef=struct ConcreteType:75:8 Extent=[[[@LINE-8]]:48 - [[@LINE-8]]:60]
 135 // CHECK: index-concepts.cpp:[[@LINE-9]]:45: ParmDecl=x:[[@LINE-9]]:45 (Definition) Extent=[[[@LINE-9]]:36 - [[@LINE-9]]:46]
 136 // CHECK: index-concepts.cpp:[[@LINE-10]]:42: TypeRef=T:[[@LINE-11]]:16 Extent=[[[@LINE-10]]:42 - [[@LINE-10]]:43]
 137 // CHECK: index-concepts.cpp:[[@LINE-10]]:3: UnexposedExpr=concreteFunc:[[@LINE-17]]:6 Extent=[[[@LINE-10]]:3 - [[@LINE-10]]:15]
 138 // CHECK: index-concepts.cpp:[[@LINE-11]]:3: DeclRefExpr=concreteFunc:[[@LINE-18]]:6 Extent=[[[@LINE-11]]:3 - [[@LINE-11]]:15]
 139 // CHECK: index-concepts.cpp:[[@LINE-12]]:16: CallExpr=ConcreteType:75:8 Extent=[[[@LINE-12]]:16 - [[@LINE-12]]:21]
 140 // CHECK: index-concepts.cpp:[[@LINE-13]]:16: UnexposedExpr=value:[[@LINE-14]]:61 Extent=[[[@LINE-13]]:16 - [[@LINE-13]]:21]
 141 // CHECK: index-concepts.cpp:[[@LINE-14]]:16: DeclRefExpr=value:[[@LINE-15]]:61 Extent=[[[@LINE-14]]:16 - [[@LINE-14]]:21]
 142 // CHECK: index-concepts.cpp:[[@LINE-14]]:3: DeclRefExpr=[[[@LINE-19]]:6] Extent=[[[@LINE-14]]:3 - [[@LINE-14]]:14]
 143 // CHECK: index-concepts.cpp:[[@LINE-15]]:3: OverloadedDeclRef=genericFunc[[[@LINE-20]]:6] Extent=[[[@LINE-15]]:3 - [[@LINE-15]]:14]
 144 // CHECK: index-concepts.cpp:[[@LINE-16]]:15: DeclRefExpr=x:[[@LINE-18]]:45 Extent=[[[@LINE-16]]:15 - [[@LINE-16]]:16]
 145
 146 template<class T>
 147 concept ConWithCompRequires = requires {
 148   { genericFunc(T()) } -> ns::ConInNamespace;
 149   { genericFunc(T()) } -> ConTwoTemplateParams<ConcreteType>;
 150 };
 151 // CHECK: index-concepts.cpp:[[@LINE-4]]:9: ConceptDecl=ConWithCompRequires:[[@LINE-4]]:9 (Definition) Extent=[[[@LINE-5]]:1 - [[@LINE-1]]:2]
 152 // CHECK: index-concepts.cpp:[[@LINE-6]]:16: TemplateTypeParameter=T:[[@LINE-6]]:16 (Definition) Extent=[[[@LINE-6]]:10 - [[@LINE-6]]:17] [access=public]
 153 // CHECK: index-concepts.cpp:[[@LINE-6]]:31: RequiresExpr= Extent=[[[@LINE-6]]:31 - [[@LINE-3]]:2]
 154 // CHECK: index-concepts.cpp:[[@LINE-6]]:5: DeclRefExpr=[123:6] Extent=[[[@LINE-6]]:5 - [[@LINE-6]]:16]
 155 // CHECK: index-concepts.cpp:[[@LINE-7]]:5: OverloadedDeclRef=genericFunc[123:6] Extent=[[[@LINE-7]]:5 - [[@LINE-7]]:16]
 156 // CHECK: index-concepts.cpp:[[@LINE-8]]:17: CallExpr= Extent=[[[@LINE-8]]:17 - [[@LINE-8]]:20]
 157 // CHECK: index-concepts.cpp:[[@LINE-9]]:17: TypeRef=T:[[@LINE-11]]:16 Extent=[[[@LINE-9]]:17 - [[@LINE-9]]:18]
 158 // CHECK: index-concepts.cpp:[[@LINE-10]]:27: NamespaceRef=ns:55:11 Extent=[[[@LINE-10]]:27 - [[@LINE-10]]:29]
 159 // CHECK: index-concepts.cpp:[[@LINE-11]]:31: TemplateRef=ConInNamespace:58:9 Extent=[[[@LINE-11]]:31 - [[@LINE-11]]:45]
 160 // CHECK: index-concepts.cpp:[[@LINE-11]]:5: DeclRefExpr=[123:6] Extent=[[[@LINE-11]]:5 - [[@LINE-11]]:16]
 161 // CHECK: index-concepts.cpp:[[@LINE-12]]:5: OverloadedDeclRef=genericFunc[123:6] Extent=[[[@LINE-12]]:5 - [[@LINE-12]]:16]
 162 // CHECK: index-concepts.cpp:[[@LINE-13]]:17: CallExpr= Extent=[[[@LINE-13]]:17 - [[@LINE-13]]:20]
 163 // CHECK: index-concepts.cpp:[[@LINE-14]]:17: TypeRef=T:[[@LINE-17]]:16 Extent=[[[@LINE-14]]:17 - [[@LINE-14]]:18]
 164 // CHECK: index-concepts.cpp:[[@LINE-15]]:27: TemplateRef=ConTwoTemplateParams:63:9 Extent=[[[@LINE-15]]:27 - [[@LINE-15]]:47]
 165 // CHECK: index-concepts.cpp:[[@LINE-16]]:48: TypeRef=struct ConcreteType:75:8 Extent=[[[@LINE-16]]:48 - [[@LINE-16]]:60]
 166
 167 template<class T>
 168 concept ConWithTypeReq = requires {
 169   typename type_trait<T>;
 170 };
 171 // CHECK: index-concepts.cpp:[[@LINE-3]]:9: ConceptDecl=ConWithTypeReq:[[@LINE-3]]:9 (Definition) Extent=[[[@LINE-4]]:1 - [[@LINE-1]]:2]
 172 // CHECK: index-concepts.cpp:[[@LINE-5]]:16: TemplateTypeParameter=T:[[@LINE-5]]:16 (Definition) Extent=[[[@LINE-5]]:10 - [[@LINE-5]]:17] [access=public]
 173 // CHECK: index-concepts.cpp:[[@LINE-5]]:26: RequiresExpr= Extent=[[[@LINE-5]]:26 - [[@LINE-3]]:2]
 174 // CHECK: index-concepts.cpp:[[@LINE-5]]:12: TemplateRef=type_trait:4:8 Extent=[[[@LINE-5]]:12 - [[@LINE-5]]:22]
 175 // CHECK: index-concepts.cpp:[[@LINE-6]]:23: TypeRef=T:[[@LINE-8]]:16 Extent=[[[@LINE-6]]:23 - [[@LINE-6]]:24]
 176
 177 template<class T>
 178 concept ConWithNestedReq = requires {
 179   requires ns::ConInNamespace<T>;
 180 };
 181 // CHECK: index-concepts.cpp:[[@LINE-3]]:9: ConceptDecl=ConWithNestedReq:[[@LINE-3]]:9 (Definition) Extent=[[[@LINE-4]]:1 - [[@LINE-1]]:2]
 182 // CHECK: index-concepts.cpp:[[@LINE-5]]:16: TemplateTypeParameter=T:[[@LINE-5]]:16 (Definition) Extent=[[[@LINE-5]]:10 - [[@LINE-5]]:17] [access=public]
 183 // CHECK: index-concepts.cpp:[[@LINE-5]]:28: RequiresExpr= Extent=[[[@LINE-5]]:28 - [[@LINE-3]]:2]
 184 // CHECK: index-concepts.cpp:[[@LINE-5]]:12: NamespaceRef=ns:55:11 Extent=[[[@LINE-5]]:12 - [[@LINE-5]]:14]
 185 // CHECK: index-concepts.cpp:[[@LINE-6]]:16: TemplateRef=ConInNamespace:58:9 Extent=[[[@LINE-6]]:16 - [[@LINE-6]]:30]
 186 // CHECK: index-concepts.cpp:[[@LINE-7]]:31: TypeRef=T:[[@LINE-9]]:16 Extent=[[[@LINE-7]]:31 - [[@LINE-7]]:32]