| //===--- VirtualInheritanceCheck.cpp - clang-tidy--------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "VirtualInheritanceCheck.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| |
| using namespace clang::ast_matchers; |
| |
| namespace clang { |
| namespace tidy { |
| namespace fuchsia { |
| |
| namespace { |
| AST_MATCHER(CXXRecordDecl, hasDirectVirtualBaseClass) { |
| if (!Node.hasDefinition()) return false; |
| if (!Node.getNumVBases()) return false; |
| for (const CXXBaseSpecifier &Base : Node.bases()) |
| if (Base.isVirtual()) return true; |
| return false; |
| } |
| } // namespace |
| |
| void VirtualInheritanceCheck::registerMatchers(MatchFinder *Finder) { |
| // Defining classes using direct virtual inheritance is disallowed. |
| Finder->addMatcher(cxxRecordDecl(hasDirectVirtualBaseClass()).bind("decl"), |
| this); |
| } |
| |
| void VirtualInheritanceCheck::check(const MatchFinder::MatchResult &Result) { |
| if (const auto *D = Result.Nodes.getNodeAs<CXXRecordDecl>("decl")) |
| diag(D->getBeginLoc(), "direct virtual inheritance is disallowed"); |
| } |
| |
| } // namespace fuchsia |
| } // namespace tidy |
| } // namespace clang |