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//===--- ImplementationInNamespaceCheck.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 "ImplementationInNamespaceCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang::tidy::llvm_libc {
const static StringRef RequiredNamespace = "__llvm_libc";
void ImplementationInNamespaceCheck::registerMatchers(MatchFinder *Finder) {
Finder->addMatcher(
decl(hasParent(translationUnitDecl()), unless(linkageSpecDecl()))
.bind("child_of_translation_unit"),
this);
}
void ImplementationInNamespaceCheck::check(
const MatchFinder::MatchResult &Result) {
const auto *MatchedDecl =
Result.Nodes.getNodeAs<Decl>("child_of_translation_unit");
if (!Result.SourceManager->isInMainFile(MatchedDecl->getLocation()))
return;
if (const auto *NS = dyn_cast<NamespaceDecl>(MatchedDecl)) {
if (NS->getName() != RequiredNamespace) {
diag(NS->getLocation(), "'%0' needs to be the outermost namespace")
<< RequiredNamespace;
}
return;
}
diag(MatchedDecl->getLocation(),
"declaration must be declared within the '%0' namespace")
<< RequiredNamespace;
}
} // namespace clang::tidy::llvm_libc
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