qdoc: properly implement \typealias command

\typealias was already a command recognized by QDoc, but it was simply
treated as a synonym for \typedef and was not documented. Implement
proper support for the command:

 - Add [alias] designation both in type summary and details.
 - Auto-generate information about the aliased type, including a link
   if aliasing a public, documented type.
 - Auto-convert aliases documented with \typedef to type aliases.
 - Add basic support for aliases also to DocBook and WebXML generators.
 - Document \typealias.

Fixes: QTBUG-82712
Change-Id: Iafa8c7def0a7488d7521fbc2862290a9bb3167ff
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/qdoc/helpprojectwriter.cpp b/src/qdoc/helpprojectwriter.cpp
index a372ea762..d411802dc 100644
--- a/src/qdoc/helpprojectwriter.cpp
+++ b/src/qdoc/helpprojectwriter.cpp
@@ -137,6 +137,7 @@ void HelpProjectWriter::readSelectors(SubProject &subproject, const QStringList
     typeHash["example"] = Node::Example;
     typeHash["externalpage"] = Node::ExternalPage;
     typeHash["typedef"] = Node::Typedef;
+    typeHash["typealias"] = Node::TypeAlias;
     typeHash["function"] = Node::Function;
     typeHash["property"] = Node::Property;
     typeHash["variable"] = Node::Variable;
@@ -389,7 +390,7 @@ bool HelpProjectWriter::generateSection(HelpProject &project, QXmlStreamWriter &
         if (node->parent())
             project.memberStatus[node->parent()].insert(node->status());
     } break;
-
+    case Node::TypeAlias:
     case Node::Typedef: {
         const TypedefNode *typedefNode = static_cast<const TypedefNode *>(node);
         QStringList typedefDetails = keywordDetails(node);