Add the object's prototype to the InternalClass structure

Change-Id: Ifa97d3354a7a7afadf70f9ba540716bd5b1eef44
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4internalclass.cpp b/src/qml/jsruntime/qv4internalclass.cpp
index f4edc99545..50803db73d 100644
--- a/src/qml/jsruntime/qv4internalclass.cpp
+++ b/src/qml/jsruntime/qv4internalclass.cpp
@@ -126,6 +126,7 @@ uint PropertyHash::lookup(const Identifier *identifier) const
 
 InternalClass::InternalClass(const QV4::InternalClass &other)
     : engine(other.engine)
+    , prototype(other.prototype)
     , propertyTable(other.propertyTable)
     , nameMap(other.nameMap)
     , propertyData(other.propertyData)
@@ -163,6 +164,25 @@ InternalClass *InternalClass::changeMember(String *string, PropertyAttributes da
 
 }
 
+InternalClass *InternalClass::changePrototype(Object *proto)
+{
+    if (prototype == proto)
+        return this;
+
+    Transition t;
+    t.prototype = proto;
+    t.flags = Transition::ProtoChange;
+
+    QHash<Transition, InternalClass *>::const_iterator tit = transitions.constFind(t);
+    if (tit != transitions.constEnd())
+        return tit.value();
+
+    // create a new class and add it to the tree
+    InternalClass *newClass = engine->newClass(*this);
+    newClass->prototype = proto;
+    return newClass;
+}
+
 InternalClass *InternalClass::addMember(String *string, PropertyAttributes data, uint *index)
 {
 //    qDebug() << "InternalClass::addMember()" << string->toQString() << size << hex << (uint)data.m_all << data.type();
@@ -293,4 +313,12 @@ void InternalClass::destroy()
     transitions.clear();
 }
 
+void InternalClass::markObjects()
+{
+    prototype->mark();
+    for (QHash<Transition, InternalClass *>::ConstIterator it = transitions.begin(), end = transitions.end();
+         it != end; ++it)
+        it.value()->markObjects();
+}
+
 QT_END_NAMESPACE