| 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 | |
| 9 | #include "ImplementationInNamespaceCheck.h" |
| 10 | #include "NamespaceConstants.h" |
| 11 | #include "clang/AST/ASTContext.h" |
| 12 | #include "clang/ASTMatchers/ASTMatchFinder.h" |
| 13 | |
| 14 | using namespace clang::ast_matchers; |
| 15 | |
| 16 | namespace clang::tidy::llvm_libc { |
| 17 | |
| 18 | void ImplementationInNamespaceCheck::registerMatchers(MatchFinder *Finder) { |
| 19 | Finder->addMatcher( |
| 20 | NodeMatch: translationUnitDecl( |
| 21 | forEach(decl(isExpansionInMainFile(), unless(linkageSpecDecl()), |
| 22 | // anonymous namespaces generate usingDirective |
| 23 | unless(usingDirectiveDecl(isImplicit()))) |
| 24 | .bind(ID: "child_of_translation_unit"))), |
| 25 | Action: this); |
| 26 | } |
| 27 | |
| 28 | void ImplementationInNamespaceCheck::check( |
| 29 | const MatchFinder::MatchResult &Result) { |
| 30 | const auto *MatchedDecl = |
| 31 | Result.Nodes.getNodeAs<Decl>(ID: "child_of_translation_unit"); |
| 32 | const auto *NS = dyn_cast<NamespaceDecl>(Val: MatchedDecl); |
| 33 | if (NS == nullptr || NS->isAnonymousNamespace()) { |
| 34 | diag(Loc: MatchedDecl->getLocation(), |
| 35 | Description: "declaration must be enclosed within the '%0' namespace") |
| 36 | << RequiredNamespaceMacroName; |
| 37 | return; |
| 38 | } |
| 39 | if (Result.SourceManager->isMacroBodyExpansion(Loc: NS->getLocation()) == false) { |
| 40 | diag(NS->getLocation(), "the outermost namespace should be the '%0' macro") |
| 41 | << RequiredNamespaceMacroName; |
| 42 | return; |
| 43 | } |
| 44 | if (NS->getName().starts_with(RequiredNamespaceStart) == false) { |
| 45 | diag(NS->getLocation(), "the '%0' macro should start with '%1'") |
| 46 | << RequiredNamespaceMacroName << RequiredNamespaceStart; |
| 47 | return; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | } // namespace clang::tidy::llvm_libc |
| 52 |