diff options
| -rw-r--r-- | src/qml/jsruntime/qv4lookup_p.h | 7 | ||||
| -rw-r--r-- | src/qml/jsruntime/qv4qmlcontext.cpp | 33 | ||||
| -rw-r--r-- | src/qml/jsruntime/qv4qmlcontext_p.h | 1 |
3 files changed, 39 insertions, 2 deletions
diff --git a/src/qml/jsruntime/qv4lookup_p.h b/src/qml/jsruntime/qv4lookup_p.h index 68da224273..ee6da21121 100644 --- a/src/qml/jsruntime/qv4lookup_p.h +++ b/src/qml/jsruntime/qv4lookup_p.h @@ -143,6 +143,13 @@ struct Lookup { quintptr unused2; int objectId; } qmlContextIdObjectLookup; + struct { + // Same as protoLookup, as used for global lookups + quintptr reserved1; + quintptr reserved2; + quintptr reserved3; + ReturnedValue (*getterTrampoline)(Lookup *l, ExecutionEngine *engine); + } qmlContextGlobalLookup; }; uint nameIndex; diff --git a/src/qml/jsruntime/qv4qmlcontext.cpp b/src/qml/jsruntime/qv4qmlcontext.cpp index 3d9e1cc0f8..e728cfb457 100644 --- a/src/qml/jsruntime/qv4qmlcontext.cpp +++ b/src/qml/jsruntime/qv4qmlcontext.cpp @@ -213,6 +213,7 @@ ReturnedValue QQmlContextWrapper::getPropertyAndBase(const QQmlContextWrapper *r } QQmlEnginePrivate *ep = QQmlEnginePrivate::get(v4->qmlEngine()); + Lookup * const originalLookup = lookup; while (context) { // Search context properties @@ -295,8 +296,24 @@ ReturnedValue QQmlContextWrapper::getPropertyAndBase(const QQmlContextWrapper *r // Do a lookup in the global object here to avoid expressionContext->unresolvedNames becoming // true if we access properties of the global object. - if (performGobalLookUp()) - return result->asReturnedValue(); + if (originalLookup) { + // Try a lookup in the global object. It's theoretically possible to first find a property + // in the global object and then later a context property with the same name is added, but that + // never really worked as we used to detect access to global properties at type compile time anyway. + lookup = originalLookup; + result = lookup->resolveGlobalGetter(v4); + if (lookup->globalGetter != Lookup::globalGetterGeneric) { + if (hasProperty) + *hasProperty = true; + lookup->qmlContextGlobalLookup.getterTrampoline = lookup->globalGetter; + lookup->qmlContextPropertyGetter = QQmlContextWrapper::lookupInGlobalObject; + return result->asReturnedValue(); + } + lookup->qmlContextPropertyGetter = QQmlContextWrapper::resolveQmlContextPropertyLookupGetter; + } else { + if (performGobalLookUp()) + return result->asReturnedValue(); + } expressionContext->unresolvedNames = true; @@ -449,6 +466,18 @@ ReturnedValue QQmlContextWrapper::lookupIdObject(Lookup *l, ExecutionEngine *eng return QV4::QObjectWrapper::wrap(engine, context->idValues[objectId]); } +ReturnedValue QQmlContextWrapper::lookupInGlobalObject(Lookup *l, ExecutionEngine *engine, Value *base) +{ + Q_UNUSED(base); + ReturnedValue result = l->qmlContextGlobalLookup.getterTrampoline(l, engine); + // In the unlikely event of mutation of the global object, update the trampoline. + if (l->qmlContextPropertyGetter != lookupInGlobalObject) { + l->qmlContextGlobalLookup.getterTrampoline = l->globalGetter; + l->qmlContextPropertyGetter = QQmlContextWrapper::lookupInGlobalObject; + } + return result; +} + void Heap::QmlContext::init(QV4::ExecutionContext *outerContext, QV4::QQmlContextWrapper *qml) { Heap::ExecutionContext::init(Heap::ExecutionContext::Type_QmlContext); diff --git a/src/qml/jsruntime/qv4qmlcontext_p.h b/src/qml/jsruntime/qv4qmlcontext_p.h index caf9281540..cfcc53c7c9 100644 --- a/src/qml/jsruntime/qv4qmlcontext_p.h +++ b/src/qml/jsruntime/qv4qmlcontext_p.h @@ -108,6 +108,7 @@ struct Q_QML_EXPORT QQmlContextWrapper : Object static ReturnedValue lookupScript(Lookup *l, ExecutionEngine *engine, Value *base); static ReturnedValue lookupSingleton(Lookup *l, ExecutionEngine *engine, Value *base); static ReturnedValue lookupIdObject(Lookup *l, ExecutionEngine *engine, Value *base); + static ReturnedValue lookupInGlobalObject(Lookup *l, ExecutionEngine *engine, Value *base); }; struct Q_QML_EXPORT QmlContext : public ExecutionContext |