forked from OSchip/llvm-project
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
//===--- OverloadedUnaryAndCheck.cpp - clang-tidy ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "OverloadedUnaryAndCheck.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/ASTMatchers/ASTMatchers.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 google {
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namespace runtime {
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void
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OverloadedUnaryAndCheck::registerMatchers(ast_matchers::MatchFinder *Finder) {
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// Only register the matchers for C++; the functionality currently does not
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// provide any benefit to other languages, despite being benign.
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if (!getLangOpts().CPlusPlus)
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return;
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// Match unary methods that overload operator&.
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Finder->addMatcher(
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cxxMethodDecl(parameterCountIs(0), hasOverloadedOperatorName("&"))
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.bind("overload"),
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this);
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// Also match freestanding unary operator& overloads. Be careful not to match
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// binary methods.
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Finder->addMatcher(
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functionDecl(
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allOf(unless(cxxMethodDecl()),
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functionDecl(parameterCountIs(1),
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hasOverloadedOperatorName("&")).bind("overload"))),
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this);
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}
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void OverloadedUnaryAndCheck::check(const MatchFinder::MatchResult &Result) {
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const auto *Decl = Result.Nodes.getNodeAs<FunctionDecl>("overload");
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diag(Decl->getLocStart(),
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"do not overload unary operator&, it is dangerous.");
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}
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} // namespace runtime
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} // namespace google
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} // namespace tidy
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} // namespace clang
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