qdoc: Re-implement \default command

Marking a QML property as a default property is now done with \qmldefault
command; repurpose the \default command to set a default value for a
property.

The default value is visible in the detailed property documentation as
an extra 'default: <value>' attribute. The value is taken as-is from
the argument passed to the command.

Fixes: QTBUG-81525
Change-Id: I7a4395e6e96046facfc3d75cc62a3bd01d04935b
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/qdoc/cppcodeparser.cpp b/src/qdoc/cppcodeparser.cpp
index c3f673b8d..106e5f75d 100644
--- a/src/qdoc/cppcodeparser.cpp
+++ b/src/qdoc/cppcodeparser.cpp
@@ -602,6 +602,16 @@ void CppCodeParser::processMetaCommand(const Doc &doc, const QString &command,
                         QStringLiteral("C++ class %1 not found: \\instantiates %1").arg(arg));
         } else
             doc.location().warning(QStringLiteral("\\instantiates is only allowed in \\qmltype"));
+    } else if (command == COMMAND_DEFAULT) {
+        if (!node->isQmlProperty()) {
+            doc.location().warning(QStringLiteral("Ignored '\\%1', applies only to '\\%2'")
+                    .arg(command, COMMAND_QMLPROPERTY));
+        } else if (arg.isEmpty()) {
+            doc.location().warning(QStringLiteral("Expected an argument for '\\%1' (maybe you meant '\\%2'?)")
+                    .arg(command, COMMAND_QMLDEFAULT));
+        } else {
+            static_cast<QmlPropertyNode *>(node)->setDefaultValue(arg);
+        }
     } else if (command == COMMAND_QMLDEFAULT) {
         node->markDefault();
     } else if (command == COMMAND_QMLREADONLY) {