void ConcatNestedNamespacesCheck::check( const ast_matchers::MatchFinder::MatchResult &Result) { const NamespaceDecl &ND = *Result.Nodes.getNodeAs<NamespaceDecl>("namespace"); const SourceManager &Sources = *Result.SourceManager; if (!locationsInSameFile(Sources, ND.getBeginLoc(), ND.getRBraceLoc())) return; if (!Sources.isInMainFile(ND.getBeginLoc())) return; if (anonymousOrInlineNamespace(ND)) return; Namespaces.push_back(&ND); if (singleNamedNamespaceChild(ND)) return; SourceRange FrontReplacement(Namespaces.front()->getBeginLoc(), Namespaces.back()->getLocation()); SourceRange BackReplacement(Namespaces.back()->getRBraceLoc(), Namespaces.front()->getRBraceLoc()); if (!alreadyConcatenated(Namespaces.size(), FrontReplacement, Sources, getLangOpts())) reportDiagnostic(FrontReplacement, BackReplacement); Namespaces.clear(); }
void NamespaceCommentCheck::check(const MatchFinder::MatchResult &Result) { const NamespaceDecl *ND = Result.Nodes.getNodeAs<NamespaceDecl>("namespace"); const SourceManager &Sources = *Result.SourceManager; if (!locationsInSameFile(Sources, ND->getLocStart(), ND->getRBraceLoc())) return; // Don't require closing comments for namespaces spanning less than certain // number of lines. unsigned StartLine = Sources.getSpellingLineNumber(ND->getLocStart()); unsigned EndLine = Sources.getSpellingLineNumber(ND->getRBraceLoc()); if (EndLine - StartLine + 1 <= ShortNamespaceLines) return; // Find next token after the namespace closing brace. SourceLocation AfterRBrace = ND->getRBraceLoc().getLocWithOffset(1); SourceLocation Loc = AfterRBrace; Token Tok; // Skip whitespace until we find the next token. while (Lexer::getRawToken(Loc, Tok, Sources, Result.Context->getLangOpts()) || Tok.is(tok::semi)) { Loc = Loc.getLocWithOffset(1); } if (!locationsInSameFile(Sources, ND->getRBraceLoc(), Loc)) return; bool NextTokenIsOnSameLine = Sources.getSpellingLineNumber(Loc) == EndLine; // If we insert a line comment before the token in the same line, we need // to insert a line break. bool NeedLineBreak = NextTokenIsOnSameLine && Tok.isNot(tok::eof); SourceRange OldCommentRange(AfterRBrace, AfterRBrace); std::string Message = "%0 not terminated with a closing comment"; // Try to find existing namespace closing comment on the same line. if (Tok.is(tok::comment) && NextTokenIsOnSameLine) { StringRef Comment(Sources.getCharacterData(Loc), Tok.getLength()); SmallVector<StringRef, 7> Groups; if (NamespaceCommentPattern.match(Comment, &Groups)) { StringRef NamespaceNameInComment = Groups.size() > 5 ? Groups[5] : ""; StringRef Anonymous = Groups.size() > 3 ? Groups[3] : ""; // Check if the namespace in the comment is the same. if ((ND->isAnonymousNamespace() && NamespaceNameInComment.empty()) || (ND->getNameAsString() == NamespaceNameInComment && Anonymous.empty())) { // FIXME: Maybe we need a strict mode, where we always fix namespace // comments with different format. return; } // Otherwise we need to fix the comment. NeedLineBreak = Comment.startswith("/*"); OldCommentRange = SourceRange(AfterRBrace, Loc.getLocWithOffset(Tok.getLength())); Message = (llvm::Twine( "%0 ends with a comment that refers to a wrong namespace '") + NamespaceNameInComment + "'").str(); } else if (Comment.startswith("//")) { // Assume that this is an unrecognized form of a namespace closing line // comment. Replace it. NeedLineBreak = false; OldCommentRange = SourceRange(AfterRBrace, Loc.getLocWithOffset(Tok.getLength())); Message = "%0 ends with an unrecognized comment"; } // If it's a block comment, just move it to the next line, as it can be // multi-line or there may be other tokens behind it. } std::string NamespaceName = ND->isAnonymousNamespace() ? "anonymous namespace" : ("namespace '" + ND->getNameAsString() + "'"); diag(AfterRBrace, Message) << NamespaceName << FixItHint::CreateReplacement( CharSourceRange::getCharRange(OldCommentRange), std::string(SpacesBeforeComments, ' ') + getNamespaceComment(ND, NeedLineBreak)); diag(ND->getLocation(), "%0 starts here", DiagnosticIDs::Note) << NamespaceName; }
void NamespaceCommentCheck::check(const MatchFinder::MatchResult &Result) { const NamespaceDecl *ND = Result.Nodes.getNodeAs<NamespaceDecl>("namespace"); const SourceManager &Sources = *Result.SourceManager; if (!locationsInSameFile(Sources, ND->getLocStart(), ND->getRBraceLoc())) return; // Don't require closing comments for namespaces spanning less than certain // number of lines. unsigned StartLine = Sources.getSpellingLineNumber(ND->getLocStart()); unsigned EndLine = Sources.getSpellingLineNumber(ND->getRBraceLoc()); if (EndLine - StartLine + 1 <= ShortNamespaceLines) return; // Find next token after the namespace closing brace. SourceLocation AfterRBrace = ND->getRBraceLoc().getLocWithOffset(1); SourceLocation Loc = AfterRBrace; Token Tok; // Skip whitespace until we find the next token. while (Lexer::getRawToken(Loc, Tok, Sources, Result.Context->getLangOpts())) { Loc = Loc.getLocWithOffset(1); } if (!locationsInSameFile(Sources, ND->getRBraceLoc(), Loc)) return; bool NextTokenIsOnSameLine = Sources.getSpellingLineNumber(Loc) == EndLine; // If we insert a line comment before the token in the same line, we need // to insert a line break. bool NeedLineBreak = NextTokenIsOnSameLine && Tok.isNot(tok::eof); // Try to find existing namespace closing comment on the same line. if (Tok.is(tok::comment) && NextTokenIsOnSameLine) { StringRef Comment(Sources.getCharacterData(Loc), Tok.getLength()); SmallVector<StringRef, 6> Groups; if (NamespaceCommentPattern.match(Comment, &Groups)) { StringRef NamespaceNameInComment = Groups.size() >= 6 ? Groups[5] : ""; // Check if the namespace in the comment is the same. if ((ND->isAnonymousNamespace() && NamespaceNameInComment.empty()) || ND->getNameAsString() == NamespaceNameInComment) { // FIXME: Maybe we need a strict mode, where we always fix namespace // comments with different format. return; } // Otherwise we need to fix the comment. NeedLineBreak = Comment.startswith("/*"); CharSourceRange OldCommentRange = CharSourceRange::getCharRange( SourceRange(Loc, Loc.getLocWithOffset(Tok.getLength()))); diag(Loc, "namespace closing comment refers to a wrong namespace '%0'") << NamespaceNameInComment << FixItHint::CreateReplacement( OldCommentRange, getNamespaceComment(ND, NeedLineBreak)); return; } // This is not a recognized form of a namespace closing comment. // Leave line comment on the same line. Move block comment to the next line, // as it can be multi-line or there may be other tokens behind it. if (Comment.startswith("//")) NeedLineBreak = false; } diag(ND->getLocation(), "namespace not terminated with a closing comment") << FixItHint::CreateInsertion(AfterRBrace, std::string(SpacesBeforeComments, ' ') + getNamespaceComment(ND, NeedLineBreak)); }