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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -std=c++2a -ast-dump -ast-dump-filter Foo %s | FileCheck -strict-whitespace %s
// Test with serialization:
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-unknown -emit-pch -o %t %s
// RUN: %clang_cc1 -x c++ -std=c++20 -triple x86_64-unknown-unknown -include-pch %t \
// RUN: -ast-dump-all -ast-dump-filter Foo /dev/null \
// RUN: | FileCheck --strict-whitespace %s
template <typename T>
concept unary_concept = true;
template <typename T, typename U>
concept binary_concept = true;
template <typename... Ts>
concept variadic_concept = true;
template <typename T>
struct Foo {
// CHECK: TemplateTypeParmDecl {{.*}} referenced Concept {{.*}} 'binary_concept'
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} <col:13, col:31> 'bool' Concept {{.*}} 'binary_concept'
// CHECK-NEXT: |-ImplicitConceptSpecializationDecl {{.*}} <line:13:9> col:9
// CHECK-NEXT: | |-TemplateArgument type 'type-parameter-1-0'
// CHECK-NEXT: | | `-TemplateTypeParmType {{.*}} 'type-parameter-1-0' dependent {{.*}}depth 1 index 0
// CHECK-NEXT: | `-TemplateArgument type 'int'
// CHECK-NEXT: | `-BuiltinType {{.*}} 'int'
// CHECK-NEXT: |-TemplateArgument {{.*}} type 'R'
// CHECK-NEXT: | `-TemplateTypeParmType {{.*}} 'R'
// CHECK-NEXT: | `-TemplateTypeParm {{.*}} 'R'
// CHECK-NEXT: `-TemplateArgument {{.*}} type 'int'
// CHECK-NEXT: `-BuiltinType {{.*}} 'int'
template <binary_concept<int> R>
Foo(R);
// CHECK: TemplateTypeParmDecl {{.*}} referenced Concept {{.*}} 'unary_concept'
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} <col:13> 'bool'
// CHECK-NEXT: |-ImplicitConceptSpecializationDecl {{.*}} <line:10:9> col:9
// CHECK-NEXT: | `-TemplateArgument type 'type-parameter-1-0'
// CHECK-NEXT: | `-TemplateTypeParmType {{.*}} 'type-parameter-1-0' dependent {{.*}}depth 1 index 0
template <unary_concept R>
Foo(R);
// CHECK: FunctionTemplateDecl {{.*}} <line:[[@LINE+1]]:3, line:[[@LINE+2]]:39> {{.*}} Foo<T>
template <typename R>
Foo(R, int) requires unary_concept<R>;
// CHECK: FunctionTemplateDecl {{.*}} <line:[[@LINE+1]]:3, line:[[@LINE+3]]:3> {{.*}} Foo<T>
template <typename R>
Foo(R, char) requires unary_concept<R> {
}
// CHECK: CXXFoldExpr {{.*}} <col:13, col:29>
template <variadic_concept... Ts>
Foo();
// CHECK: CXXFoldExpr {{.*}} <col:13, col:34>
template <variadic_concept<int>... Ts>
Foo();
};
namespace GH82628 {
namespace ns {
template <typename T>
concept C = true;
} // namespace ns
using ns::C;
// CHECK: ConceptDecl {{.*}} Foo
// CHECK-NEXT: |-TemplateTypeParmDecl {{.*}} typename depth 0 index 0 T
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} UsingShadow {{.*}} 'C'
template <typename T>
concept Foo = C<T>;
// CHECK: TemplateTypeParmDecl {{.*}} Concept {{.*}} 'C' (UsingShadow {{.*}} 'C')
template <C T>
constexpr bool FooVar = false;
// CHECK: ConceptSpecializationExpr {{.*}} UsingShadow {{.*}} 'C'
template <typename T> requires C<T>
constexpr bool FooVar2 = true;
// CHECK: SimpleRequirement
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} UsingShadow {{.*}} 'C'
template <typename T> requires requires (T) { C<T>; }
constexpr bool FooVar3 = true;
// CHECK: NonTypeTemplateParmDecl
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} UsingShadow {{.*}} 'C'
template <C auto T>
constexpr bool FooVar4 = bool(T());
// CHECK: FunctionTemplateDecl
// CHECK-NEXT: |-TemplateTypeParmDecl {{.*}} Concept {{.*}} 'C' (UsingShadow {{.*}} 'C') depth 0 index 0 ... T
// CHECK: NonTypeTemplateParmDecl {{.*}} depth 0 index 1 U
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} UsingShadow {{.*}} 'C'
// CHECK: |-TemplateTypeParmDecl {{.*}} Concept {{.*}} 'C' (UsingShadow {{.*}} 'C') depth 0 index 2 V:auto
template <C... T, C auto U>
auto FooFunc(C auto V) -> C decltype(auto) {
// FIXME: TypeLocs inside of the function body cannot be dumped via -ast-dump for now.
// See clang-tools-extra/clangd/unittests/SelectionTests.cpp:SelectionTest.UsingConcepts for their checkings.
C auto W = V;
return W;
}
}
namespace constraint_auto_params {
template <class T, class K>
concept C = true;
template<class T>
void g(C<T> auto Foo) {}
// CHECK: TemplateTypeParmDecl {{.*}} depth 0 index 1 Foo:auto
// CHECK-NEXT: `-ConceptSpecializationExpr {{.*}} <col:8, col:11>
}
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