void RawCommentList::addComment(const RawComment &RC,
llvm::BumpPtrAllocator &Allocator) {
if (RC.isInvalid())
return;
// Check if the comments are not in source order.
while (!Comments.empty() &&
!SourceMgr.isBeforeInTranslationUnit(Comments.back()->getLocStart(),
RC.getLocStart())) {
// If they are, just pop a few last comments that don't fit.
// This happens if an \#include directive contains comments.
Comments.pop_back();
}
// Ordinary comments are not interesting for us.
if (RC.isOrdinary())
return;
// If this is the first Doxygen comment, save it (because there isn't
// anything to merge it with).
if (Comments.empty()) {
Comments.push_back(new (Allocator) RawComment(RC));
return;
}
const RawComment &C1 = *Comments.back();
const RawComment &C2 = RC;
// Merge comments only if there is only whitespace between them.
// Can't merge trailing and non-trailing comments unless the second is
// non-trailing ordinary in the same column, as in the case:
// int x; // documents x
// // more text
// versus:
// int x; // documents x
// int y; // documents y
// or:
// int x; // documents x
// // documents y
// int y;
// Merge comments if they are on same or consecutive lines.
if ((C1.isTrailingComment() == C2.isTrailingComment() ||
(C1.isTrailingComment() && !C2.isTrailingComment() &&
isOrdinaryKind(C2.getKind()) &&
commentsStartOnSameColumn(SourceMgr, C1, C2))) &&
onlyWhitespaceBetween(SourceMgr, C1.getLocEnd(), C2.getLocStart(),
/*MaxNewlinesAllowed=*/1)) {
SourceRange MergedRange(C1.getLocStart(), C2.getLocEnd());
*Comments.back() = RawComment(SourceMgr, MergedRange, true,
RC.isParseAllComments());
} else {
Comments.push_back(new (Allocator) RawComment(RC));
}
}
static Optional<DocComment *>
getAnyBaseClassDocComment(swift::markup::MarkupContext &MC,
const ClassDecl *CD,
const Decl *D) {
RawComment RC;
if (const auto *VD = dyn_cast<ValueDecl>(D)) {
const auto *BaseDecl = VD->getOverriddenDecl();
while (BaseDecl) {
RC = BaseDecl->getRawComment();
if (!RC.isEmpty()) {
swift::markup::LineList LL = MC.getLineList(RC);
auto *Doc = swift::markup::parseDocument(MC, LL);
auto Parts = extractCommentParts(MC, Doc);
SmallString<48> RawCascadeText;
llvm::raw_svector_ostream OS(RawCascadeText);
OS << "This documentation comment was inherited from ";
auto *Text = swift::markup::Text::create(MC, MC.allocateCopy(OS.str()));
auto BaseClass =
BaseDecl->getDeclContext()->getAsClassOrClassExtensionContext();
auto *BaseClassMonospace =
swift::markup::Code::create(MC,
MC.allocateCopy(BaseClass->getNameStr()));
auto *Period = swift::markup::Text::create(MC, ".");
auto *Para = swift::markup::Paragraph::create(MC, {
Text, BaseClassMonospace, Period
});
auto CascadeNote = swift::markup::NoteField::create(MC, {Para});
SmallVector<const swift::markup::MarkupASTNode *, 8> BodyNodes {
Parts.BodyNodes.begin(),
Parts.BodyNodes.end()
};
BodyNodes.push_back(CascadeNote);
Parts.BodyNodes = MC.allocateCopy(llvm::makeArrayRef(BodyNodes));
return new (MC) DocComment(D, Doc, Parts);
}
BaseDecl = BaseDecl->getOverriddenDecl();
}
}
return None;
}
void RawCommentList::addComment(const RawComment &RC,
llvm::BumpPtrAllocator &Allocator) {
if (RC.isInvalid())
return;
// Check if the comments are not in source order.
while (!Comments.empty() &&
!SourceMgr.isBeforeInTranslationUnit(
Comments.back()->getSourceRange().getBegin(),
RC.getSourceRange().getBegin())) {
// If they are, just pop a few last comments that don't fit.
// This happens if an \#include directive contains comments.
Comments.pop_back();
}
if (OnlyWhitespaceSeen) {
if (!onlyWhitespaceBetweenComments(SourceMgr, LastComment, RC))
OnlyWhitespaceSeen = false;
}
LastComment = RC;
// Ordinary comments are not interesting for us.
if (RC.isOrdinary())
return;
// If this is the first Doxygen comment, save it (because there isn't
// anything to merge it with).
if (Comments.empty()) {
Comments.push_back(new (Allocator) RawComment(RC));
OnlyWhitespaceSeen = true;
return;
}
const RawComment &C1 = *Comments.back();
const RawComment &C2 = RC;
// Merge comments only if there is only whitespace between them.
// Can't merge trailing and non-trailing comments.
// Merge trailing comments if they are on same or consecutive lines.
if (OnlyWhitespaceSeen &&
(C1.isTrailingComment() == C2.isTrailingComment()) &&
(!C1.isTrailingComment() ||
C1.getEndLine(SourceMgr) + 1 >= C2.getBeginLine(SourceMgr))) {
SourceRange MergedRange(C1.getSourceRange().getBegin(),
C2.getSourceRange().getEnd());
*Comments.back() = RawComment(SourceMgr, MergedRange, true);
} else
Comments.push_back(new (Allocator) RawComment(RC));
OnlyWhitespaceSeen = true;
}
