1 //===- unittest/Tooling/RecursiveASTVisitorTests/Class.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 
11 using namespace clang;
12 
13 namespace {
14 
15 // Checks for lambda classes that are not marked as implicitly-generated.
16 // (There should be none.)
17 class ClassVisitor : public ExpectedLocationVisitor<ClassVisitor> {
18 public:
ClassVisitor()19   ClassVisitor() : SawNonImplicitLambdaClass(false) {}
VisitCXXRecordDecl(CXXRecordDecl * record)20   bool VisitCXXRecordDecl(CXXRecordDecl* record) {
21     if (record->isLambda() && !record->isImplicit())
22       SawNonImplicitLambdaClass = true;
23     return true;
24   }
25 
sawOnlyImplicitLambdaClasses() const26   bool sawOnlyImplicitLambdaClasses() const {
27     return !SawNonImplicitLambdaClass;
28   }
29 
30 private:
31   bool SawNonImplicitLambdaClass;
32 };
33 
TEST(RecursiveASTVisitor,LambdaClosureTypesAreImplicit)34 TEST(RecursiveASTVisitor, LambdaClosureTypesAreImplicit) {
35   ClassVisitor Visitor;
36   EXPECT_TRUE(Visitor.runOver("auto lambda = []{};", ClassVisitor::Lang_CXX11));
37   EXPECT_TRUE(Visitor.sawOnlyImplicitLambdaClasses());
38 }
39 
40 } // end anonymous namespace
41