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//===--- UnnamedNamespaceInHeaderCheck.cpp - clang-tidy ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "UnnamedNamespaceInHeaderCheck.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/AST/ASTContext.h"
using namespace clang::ast_matchers;
namespace clang {
namespace ast_matchers {
AST_MATCHER(NamespaceDecl, isAnonymousNamespace) {
return Node.isAnonymousNamespace();
}
} // namespace ast_matchers
namespace tidy {
namespace build {
void UnnamedNamespaceInHeaderCheck::registerMatchers(
ast_matchers::MatchFinder *Finder) {
Finder->addMatcher(
namespaceDecl(isAnonymousNamespace()).bind("anonymousNamespace"), this);
}
void
UnnamedNamespaceInHeaderCheck::check(const MatchFinder::MatchResult &Result) {
SourceManager *SM = Result.SourceManager;
const auto *N = Result.Nodes.getNodeAs<NamespaceDecl>("anonymousNamespace");
SourceLocation Loc = N->getLocStart();
if (!Loc.isValid())
return;
// Look if we're inside a header, check for common suffixes only.
// TODO: Allow configuring the set of file extensions.
StringRef FileName = SM->getPresumedLoc(Loc).getFilename();
if (FileName.endswith(".h") || FileName.endswith(".hh") ||
FileName.endswith(".hpp") || FileName.endswith(".hxx"))
diag(Loc, "do not use unnamed namespaces in header files.");
}
} // namespace build
} // namespace tidy
} // namespace clang
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