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59 lines
2.4 KiB
C++
59 lines
2.4 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -std=c++17 -ast-dump %s | FileCheck -strict-whitespace %s
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// Tests to verify we construct correct using template names.
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// TemplateNames are not dumped, so the sugar here isn't obvious. However
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// the "using" on the TemplateSpecializationTypes shows that the
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// UsingTemplateName is present.
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namespace ns {
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template<typename T> class S {
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public:
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S(T);
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};
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template<typename T> struct S2 { S2(T); };
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template <typename T> S2(T t) -> S2<T>;
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}
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using ns::S;
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using ns::S2;
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// TemplateName in TemplateSpecializationType.
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template<typename T>
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using A = S<T>;
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// CHECK: TypeAliasDecl
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// CHECK-NEXT: `-ElaboratedType {{.*}} 'S<T>' sugar dependent
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// CHECK-NEXT: `-TemplateSpecializationType {{.*}} 'S<T>' dependent
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// CHECK-NEXT: |-name: 'S':'ns::S' qualified
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// CHECk-NEXT: | |-UsingShadowDecl {{.+}} ClassTemplate {{.+}} 'S'
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// TemplateName in TemplateArgument.
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template <template <typename> class T> class X {};
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using B = X<S>;
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// CHECK: TypeAliasDecl
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// CHECK-NEXT: `-ElaboratedType {{.*}} 'X<S>' sugar
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// CHECK-NEXT: `-TemplateSpecializationType {{.*}} 'X<S>' sugar
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// CHECK-NEXT: |-name: 'X' qualified
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// CHECK-NEXT: | `-ClassTemplateDecl {{.+}} X
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// CHECK-NEXT: |-TemplateArgument template 'S':'ns::S' qualified
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// CHECK-NEXT: | |-UsingShadowDecl {{.*}} implicit ClassTemplate {{.*}} 'S'
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// CHECK-NEXT: | `-target: ClassTemplateDecl {{.*}} S
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// CHECK-NEXT: `-RecordType {{.*}} 'X<ns::S>'
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// CHECK-NEXT: `-ClassTemplateSpecialization {{.*}} 'X'
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// TemplateName in DeducedTemplateSpecializationType.
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S DeducedTemplateSpecializationT(123);
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using C = decltype(DeducedTemplateSpecializationT);
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// CHECK: DecltypeType {{.*}}
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// CHECK-NEXT: |-DeclRefExpr {{.*}}
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// CHECK-NEXT: `-ElaboratedType {{.*}} 'S<int>' sugar
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// CHECK-NEXT: `-DeducedTemplateSpecializationType {{.*}} 'ns::S<int>' sugar
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// CHECK-NEXT: |-name: 'S':'ns::S' qualified
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// CHECK-NEXT: | |-UsingShadowDecl {{.+}} 'S'
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S2 DeducedTemplateSpecializationT2(123);
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using D = decltype(DeducedTemplateSpecializationT2);
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// CHECK: DecltypeType {{.*}}
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// CHECK-NEXT: |-DeclRefExpr {{.*}}
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// CHECK-NEXT: `-ElaboratedType {{.*}} 'S2<int>' sugar
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// CHECK-NEXT: `-DeducedTemplateSpecializationType {{.*}} 'S2<int>' sugar
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// CHECK-NEXT: |-name: 'S2':'ns::S2' qualified
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//CHECk-NEXT: | |-UsingShadowDecl {{.+}} ClassTemplate {{.+}} 'S2'
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