40 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9#include "TestVisitor.h"10 11using namespace clang;12 13namespace {14 15// A visitor that visits implicit declarations and matches constructors.16class ImplicitCtorVisitor : public ExpectedLocationVisitor {17public:18 bool VisitCXXConstructorDecl(CXXConstructorDecl *Ctor) override {19 if (Ctor->isImplicit()) { // Was not written in source code20 if (const CXXRecordDecl* Class = Ctor->getParent()) {21 Match(Class->getName(), Ctor->getLocation());22 }23 }24 return true;25 }26};27 28TEST(RecursiveASTVisitor, VisitsImplicitCopyConstructors) {29 ImplicitCtorVisitor Visitor;30 Visitor.ExpectMatch("Simple", 2, 8);31 // Note: Clang lazily instantiates implicit declarations, so we need32 // 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 namespace40