| //===--- StaticDefinitionInAnonymousNamespaceCheck.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 "StaticDefinitionInAnonymousNamespaceCheck.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| #include "clang/Lex/Lexer.h" |
| |
| using namespace clang::ast_matchers; |
| |
| namespace clang { |
| namespace tidy { |
| namespace readability { |
| |
| void StaticDefinitionInAnonymousNamespaceCheck::registerMatchers( |
| MatchFinder *Finder) { |
| Finder->addMatcher( |
| namedDecl(anyOf(functionDecl(isDefinition(), isStaticStorageClass()), |
| varDecl(isDefinition(), isStaticStorageClass())), |
| hasParent(namespaceDecl(isAnonymous()))) |
| .bind("static-def"), |
| this); |
| } |
| |
| void StaticDefinitionInAnonymousNamespaceCheck::check( |
| const MatchFinder::MatchResult &Result) { |
| const auto *Def = Result.Nodes.getNodeAs<NamedDecl>("static-def"); |
| // Skips all static definitions defined in Macro. |
| if (Def->getLocation().isMacroID()) |
| return; |
| |
| // Skips all static definitions in function scope. |
| const DeclContext *DC = Def->getDeclContext(); |
| if (DC->getDeclKind() != Decl::Namespace) |
| return; |
| |
| auto Diag = |
| diag(Def->getLocation(), "%0 is a static definition in " |
| "anonymous namespace; static is redundant here") |
| << Def; |
| Token Tok; |
| SourceLocation Loc = Def->getSourceRange().getBegin(); |
| while (Loc < Def->getSourceRange().getEnd() && |
| !Lexer::getRawToken(Loc, Tok, *Result.SourceManager, getLangOpts(), |
| true)) { |
| SourceRange TokenRange(Tok.getLocation(), Tok.getEndLoc()); |
| StringRef SourceText = |
| Lexer::getSourceText(CharSourceRange::getTokenRange(TokenRange), |
| *Result.SourceManager, getLangOpts()); |
| if (SourceText == "static") { |
| Diag << FixItHint::CreateRemoval(TokenRange); |
| break; |
| } |
| Loc = Tok.getEndLoc(); |
| } |
| } |
| |
| } // namespace readability |
| } // namespace tidy |
| } // namespace clang |