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ProTypeUnionAccessCheck.cpp
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1 //===--- ProTypeUnionAccessCheck.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 "ProTypeUnionAccessCheck.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
19 void ProTypeUnionAccessCheck::registerMatchers(MatchFinder *Finder) {
20 if (!getLangOpts().CPlusPlus)
21 return;
22
23 Finder->addMatcher(memberExpr(hasObjectExpression(hasType(recordDecl(isUnion())))).bind("expr"), this);
24 }
25
26 void ProTypeUnionAccessCheck::check(const MatchFinder::MatchResult &Result) {
27 const auto *Matched = Result.Nodes.getNodeAs<MemberExpr>("expr");
28 diag(Matched->getMemberLoc(), "do not access members of unions; use (boost::)variant instead");
29 }
30
31 } // namespace tidy
32 } // namespace clang
33
Finder
std::unique_ptr< ast_matchers::MatchFinder > Finder
Definition: ClangTidy.cpp:188
ProTypeUnionAccessCheck.h
Result
const NamedDecl * Result
Definition: USRFinder.cpp:121