llvm/clang-tools-extra/clang-tidy/llvmlibc/CalleeNamespaceCheck.cpp

//===-- CalleeNamespaceCheck.cpp ------------------------------------------===//
//
// 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 "CalleeNamespaceCheck.h"
#include "NamespaceConstants.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"

#include "clang/ASTMatchers/ASTMatchers.h"
#include "llvm/ADT/StringSet.h"

usingnamespaceclang::ast_matchers;

namespace clang::tidy::llvm_libc {

// Gets the outermost namespace of a DeclContext, right under the Translation
// Unit.
const DeclContext *getOutermostNamespace(const DeclContext *Decl) { … }

void CalleeNamespaceCheck::registerMatchers(MatchFinder *Finder) { … }

// A list of functions that are exempted from this check. The __errno_location
// function is for setting errno, which is allowed in libc, and the other
// functions are specifically allowed to be external so that they can be
// intercepted.
static const llvm::StringSet<> IgnoredFunctions = …;

void CalleeNamespaceCheck::check(const MatchFinder::MatchResult &Result) { … }

} // namespace clang::tidy::llvm_libc