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//===--- DontModifyStdNamespaceCheck.cpp - clang-tidy----------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "DontModifyStdNamespaceCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace cert {
void DontModifyStdNamespaceCheck::registerMatchers(MatchFinder *Finder) {
if (!getLangOpts().CPlusPlus)
return;
Finder->addMatcher(
namespaceDecl(unless(isExpansionInSystemHeader()),
anyOf(hasName("std"), hasName("posix")),
has(decl(unless(anyOf(
functionDecl(isExplicitTemplateSpecialization()),
cxxRecordDecl(isExplicitTemplateSpecialization()))))))
.bind("nmspc"),
this);
}
void DontModifyStdNamespaceCheck::check(
const MatchFinder::MatchResult &Result) {
const auto *N = Result.Nodes.getNodeAs<NamespaceDecl>("nmspc");
// Only consider top level namespaces.
if (N->getParent() != Result.Context->getTranslationUnitDecl())
return;
diag(N->getLocation(),
"modification of %0 namespace can result in undefined behavior")
<< N;
}
} // namespace cert
} // namespace tidy
} // namespace clang
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