clang-tools  14.0.0git
ImplementationInNamespaceCheck.cpp
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1 //===--- ImplementationInNamespaceCheck.cpp - clang-tidy ------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 
13 using namespace clang::ast_matchers;
14 
15 namespace clang {
16 namespace tidy {
17 namespace llvm_libc {
18 
19 const static StringRef RequiredNamespace = "__llvm_libc";
20 void ImplementationInNamespaceCheck::registerMatchers(MatchFinder *Finder) {
21  Finder->addMatcher(
22  decl(hasParent(translationUnitDecl()), unless(linkageSpecDecl()))
23  .bind("child_of_translation_unit"),
24  this);
25 }
26 
28  const MatchFinder::MatchResult &Result) {
29  const auto *MatchedDecl =
30  Result.Nodes.getNodeAs<Decl>("child_of_translation_unit");
31  if (!Result.SourceManager->isInMainFile(MatchedDecl->getLocation()))
32  return;
33 
34  if (const auto *NS = dyn_cast<NamespaceDecl>(MatchedDecl)) {
35  if (NS->getName() != RequiredNamespace) {
36  diag(NS->getLocation(), "'%0' needs to be the outermost namespace")
38  }
39  return;
40  }
41  diag(MatchedDecl->getLocation(),
42  "declaration must be declared within the '%0' namespace")
44 }
45 
46 } // namespace llvm_libc
47 } // namespace tidy
48 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
Decl
const FunctionDecl * Decl
Definition: AvoidBindCheck.cpp:100
clang::clangd::check
bool check(llvm::StringRef File, llvm::function_ref< bool(const Position &)> ShouldCheckLine, const ThreadsafeFS &TFS, const ClangdLSPServer::Options &Opts, bool EnableCodeCompletion)
Definition: Check.cpp:258
clang::tidy::llvm_libc::RequiredNamespace
const static StringRef RequiredNamespace
Definition: ImplementationInNamespaceCheck.cpp:19
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
ImplementationInNamespaceCheck.h