clang/unittests/Tooling/RecursiveASTVisitorTests/Class.cpp

   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:
  19   ClassVisitor() : SawNonImplicitLambdaClass(false) {}
  20   bool VisitCXXRecordDecl(CXXRecordDecl* record) {
  21     if (record->isLambda() && !record->isImplicit())
  22       SawNonImplicitLambdaClass = true;
  23     return true;
  24   }
  25
  26   bool sawOnlyImplicitLambdaClasses() const {
  27     return !SawNonImplicitLambdaClass;
  28   }
  29
  30 private:
  31   bool SawNonImplicitLambdaClass;
  32 };
  33
  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