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