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));
}