1 //===- unittest/Tooling/RecursiveASTVisitorTests/ImplicitCtor.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 // A visitor that visits implicit declarations and matches constructors. 16 class ImplicitCtorVisitor : public ExpectedLocationVisitor { 17 public: 18 bool VisitCXXConstructorDecl(CXXConstructorDecl *Ctor) override { 19 if (Ctor->isImplicit()) { // Was not written in source code 20 if (const CXXRecordDecl* Class = Ctor->getParent()) { 21 Match(Class->getName(), Ctor->getLocation()); 22 } 23 } 24 return true; 25 } 26 }; 27 28 TEST(RecursiveASTVisitor, VisitsImplicitCopyConstructors) { 29 ImplicitCtorVisitor Visitor; 30 Visitor.ExpectMatch("Simple", 2, 8); 31 // Note: Clang lazily instantiates implicit declarations, so we need 32 // to use them in order to force them to appear in the AST. 33 EXPECT_TRUE(Visitor.runOver( 34 "struct WithCtor { WithCtor(); }; \n" 35 "struct Simple { Simple(); WithCtor w; }; \n" 36 "int main() { Simple s; Simple t(s); }\n")); 37 } 38 39 } // end anonymous namespace 40