1//===- unittest/Tooling/RecursiveASTVisitorTests/NestedNameSpecifiers.cpp -===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "TestVisitor.h"
10
11using namespace clang;
12
13namespace {
14
15// Check to ensure that nested name specifiers are visited.
16class NestedNameSpecifiersVisitor : public ExpectedLocationVisitor {
17public:
18 bool VisitRecordTypeLoc(RecordTypeLoc RTL) override {
19 if (!RTL)
20 return true;
21 Match(Name: RTL.getDecl()->getName(), Location: RTL.getNameLoc());
22 return true;
23 }
24
25 bool TraverseNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) override {
26 if (!NNS)
27 return true;
28 if (const NamespaceDecl *ND =
29 NNS.getNestedNameSpecifier()->getAsNamespace())
30 Match(Name: ND->getName(), Location: NNS.getLocalBeginLoc());
31 return ExpectedLocationVisitor::TraverseNestedNameSpecifierLoc(NNS);
32 }
33};
34
35TEST(RecursiveASTVisitor,
36 NestedNameSpecifiersForTemplateSpecializationsAreVisited) {
37 StringRef Source = R"(
38namespace ns {
39struct Outer {
40 template<typename T, typename U>
41 struct Nested { };
42
43 template<typename T>
44 static T x;
45};
46}
47
48template<>
49struct ns::Outer::Nested<int, int>;
50
51template<>
52struct ns::Outer::Nested<int, int> { };
53
54template<typename T>
55struct ns::Outer::Nested<int, T> { };
56
57template<>
58int ns::Outer::x<int> = 0;
59)";
60 NestedNameSpecifiersVisitor Visitor;
61 Visitor.ExpectMatch("ns", 13, 8);
62 Visitor.ExpectMatch("ns", 16, 8);
63 Visitor.ExpectMatch("ns", 19, 8);
64 Visitor.ExpectMatch("ns", 22, 5);
65 Visitor.ExpectMatch("Outer", 13, 12);
66 Visitor.ExpectMatch("Outer", 16, 12);
67 Visitor.ExpectMatch("Outer", 19, 12);
68 Visitor.ExpectMatch("Outer", 22, 9);
69 EXPECT_TRUE(Visitor.runOver(Source, NestedNameSpecifiersVisitor::Lang_CXX14));
70}
71
72} // end anonymous namespace
73

source code of clang/unittests/Tooling/RecursiveASTVisitorTests/NestedNameSpecifiers.cpp