clang-tools 8.0.0

VirtualInheritanceCheck.cpp
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1 //===--- VirtualInheritanceCheck.cpp - clang-tidy--------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "VirtualInheritanceCheck.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13
14 using namespace clang::ast_matchers;
15
16 namespace clang {
17 namespace tidy {
18 namespace fuchsia {
19
20 namespace {
21 AST_MATCHER(CXXRecordDecl, hasDirectVirtualBaseClass) {
22 if (!Node.hasDefinition()) return false;
23 if (!Node.getNumVBases()) return false;
24 for (const CXXBaseSpecifier &Base : Node.bases())
25 if (Base.isVirtual()) return true;
26 return false;
27 }
28 } // namespace
29
30 void VirtualInheritanceCheck::registerMatchers(MatchFinder *Finder) {
31 // Defining classes using direct virtual inheritance is disallowed.
32 Finder->addMatcher(cxxRecordDecl(hasDirectVirtualBaseClass()).bind("decl"),
33 this);
34 }
35
36 void VirtualInheritanceCheck::check(const MatchFinder::MatchResult &Result) {
37 if (const auto *D = Result.Nodes.getNodeAs<CXXRecordDecl>("decl"))
38 diag(D->getBeginLoc(), "direct virtual inheritance is disallowed");
39 }
40
41 } // namespace fuchsia
42 } // namespace tidy
43 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:15
clang::tidy::matchers::AST_MATCHER
AST_MATCHER(BinaryOperator, isAssignmentOperator)
Definition: Matchers.h:20
VirtualInheritanceCheck.h
D
const Decl * D
Definition: XRefs.cpp:79
Result
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: ClangdServer.cpp:60
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18