| 1 | //===--- UseAnonymousNamespaceCheck.cpp - clang-tidy ----------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "UseAnonymousNamespaceCheck.h" |
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| 10 | #include "clang/AST/ASTContext.h" |
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| 11 | #include "clang/ASTMatchers/ASTMatchFinder.h" |
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| 12 | |
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| 13 | using namespace clang::ast_matchers; |
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| 14 | |
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| 15 | namespace clang::tidy::misc { |
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| 16 | namespace { |
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| 17 | AST_POLYMORPHIC_MATCHER_P(, |
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| 18 | AST_POLYMORPHIC_SUPPORTED_TYPES(FunctionDecl, |
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| 19 | VarDecl), |
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| 20 | FileExtensionsSet, ) { |
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| 21 | return utils::isExpansionLocInHeaderFile( |
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| 22 | Loc: Node.getBeginLoc(), SM: Finder->getASTContext().getSourceManager(), |
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| 23 | HeaderFileExtensions); |
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| 24 | } |
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| 25 | |
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| 26 | AST_MATCHER(FunctionDecl, isMemberFunction) { |
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| 27 | return llvm::isa<CXXMethodDecl>(Val: &Node); |
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| 28 | } |
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| 29 | AST_MATCHER(VarDecl, isStaticDataMember) { return Node.isStaticDataMember(); } |
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| 30 | } // namespace |
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| 31 | |
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| 32 | UseAnonymousNamespaceCheck::UseAnonymousNamespaceCheck( |
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| 33 | StringRef Name, ClangTidyContext *Context) |
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| 34 | : ClangTidyCheck(Name, Context), |
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| 35 | HeaderFileExtensions(Context->getHeaderFileExtensions()) {} |
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| 36 | |
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| 37 | void UseAnonymousNamespaceCheck::registerMatchers(MatchFinder *Finder) { |
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| 38 | Finder->addMatcher( |
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| 39 | NodeMatch: functionDecl(isStaticStorageClass(), |
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| 40 | unless(anyOf(isInHeaderFile(HeaderFileExtensions), |
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| 41 | isInAnonymousNamespace(), isMemberFunction()))) |
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| 42 | .bind(ID: "x" ), |
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| 43 | Action: this); |
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| 44 | Finder->addMatcher( |
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| 45 | NodeMatch: varDecl(isStaticStorageClass(), |
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| 46 | unless(anyOf(isInHeaderFile(HeaderFileExtensions), |
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| 47 | isInAnonymousNamespace(), isStaticLocal(), |
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| 48 | isStaticDataMember(), hasType(InnerMatcher: isConstQualified())))) |
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| 49 | .bind(ID: "x" ), |
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| 50 | Action: this); |
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| 51 | } |
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| 52 | |
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| 53 | void UseAnonymousNamespaceCheck::check(const MatchFinder::MatchResult &Result) { |
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| 54 | if (const auto *MatchedDecl = Result.Nodes.getNodeAs<NamedDecl>(ID: "x" )) { |
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| 55 | StringRef Type = llvm::isa<VarDecl>(Val: MatchedDecl) ? "variable" : "function" ; |
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| 56 | diag(MatchedDecl->getLocation(), |
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| 57 | "%0 %1 declared 'static', move to anonymous namespace instead" ) |
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| 58 | << Type << MatchedDecl; |
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| 59 | } |
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| 60 | } |
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| 61 | |
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| 62 | } // namespace clang::tidy::misc |
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| 63 | |
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