[new compiler] Fix function and binding expression setup

Binding expressions and QML used to be set up so that they were written
as function closure:

    (function(...) {
      expression here
    })

and then evaluated inside qml scope. With the new setup we do that closure
setup manually now.

For that we have to define a dummy outter "context scope" function in the
codegen, that will later be used to look up the context ids.

Change-Id: I0656419d67a1728451fcd46f402b03979f118b0b
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4script.cpp b/src/qml/jsruntime/qv4script.cpp
index ad83a52d8f..7dd3bbeb66 100644
--- a/src/qml/jsruntime/qv4script.cpp
+++ b/src/qml/jsruntime/qv4script.cpp
@@ -75,11 +75,26 @@ QmlBindingWrapper::QmlBindingWrapper(ExecutionContext *scope, Function *f, Objec
     scope->engine->popContext();
 }
 
+QmlBindingWrapper::QmlBindingWrapper(ExecutionContext *scope, Object *qml)
+    : FunctionObject(scope, scope->engine->id_eval)
+    , qml(qml)
+{
+    vtbl = &static_vtbl;
+    function = 0;
+    usesArgumentsObject = false;
+    needsActivation = false;
+    defineReadonlyProperty(scope->engine->id_length, Value::fromInt32(1));
+
+    qmlContext = scope->engine->current->newQmlContext(this, qml);
+    scope->engine->popContext();
+}
+
 ReturnedValue QmlBindingWrapper::call(Managed *that, CallData *)
 {
     ExecutionEngine *engine = that->engine();
     Scope scope(engine);
     QmlBindingWrapper *This = static_cast<QmlBindingWrapper *>(that);
+    Q_ASSERT(This->function);
 
     CallContext *ctx = This->qmlContext;
     std::fill(ctx->locals, ctx->locals + ctx->function->varCount, Value::undefinedValue());