1 //===- unittest/Tooling/RecursiveASTVisitorTests/Class.cpp ----------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "TestVisitor.h"
11 
12 using namespace clang;
13 
14 namespace {
15 
16 // Checks for lambda classes that are not marked as implicitly-generated.
17 // (There should be none.)
18 class ClassVisitor : public ExpectedLocationVisitor<ClassVisitor> {
19 public:
20   ClassVisitor() : SawNonImplicitLambdaClass(false) {}
21   bool VisitCXXRecordDecl(CXXRecordDecl* record) {
22     if (record->isLambda() && !record->isImplicit())
23       SawNonImplicitLambdaClass = true;
24     return true;
25   }
26 
27   bool sawOnlyImplicitLambdaClasses() const {
28     return !SawNonImplicitLambdaClass;
29   }
30 
31 private:
32   bool SawNonImplicitLambdaClass;
33 };
34 
35 TEST(RecursiveASTVisitor, LambdaClosureTypesAreImplicit) {
36   ClassVisitor Visitor;
37   EXPECT_TRUE(Visitor.runOver("auto lambda = []{};", ClassVisitor::Lang_CXX11));
38   EXPECT_TRUE(Visitor.sawOnlyImplicitLambdaClasses());
39 }
40 
41 } // end anonymous namespace
42