| //===--- ProTypeUnionAccessCheck.cpp - clang-tidy--------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ProTypeUnionAccessCheck.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| |
| using namespace clang::ast_matchers; |
| |
| namespace clang { |
| namespace tidy { |
| namespace cppcoreguidelines { |
| |
| void ProTypeUnionAccessCheck::registerMatchers(MatchFinder *Finder) { |
| if (!getLangOpts().CPlusPlus) |
| return; |
| |
| Finder->addMatcher( |
| memberExpr(hasObjectExpression(hasType(recordDecl(isUnion())))) |
| .bind("expr"), |
| this); |
| } |
| |
| void ProTypeUnionAccessCheck::check(const MatchFinder::MatchResult &Result) { |
| const auto *Matched = Result.Nodes.getNodeAs<MemberExpr>("expr"); |
| diag(Matched->getMemberLoc(), |
| "do not access members of unions; use (boost::)variant instead"); |
| } |
| |
| } // namespace cppcoreguidelines |
| } // namespace tidy |
| } // namespace clang |