Fix broken Maroon game / regression in PropertyChanges {} element

Commit 0aadcf8077840068eb182269e9ed9c31ad12f45e that pre-compiles the
expressions in PropertyChanges {} introduced a regression in where the
evaluation context was incorrect and thus bindings would not be able to
access the correct properties. For example

    PropertyChanges {
        target: someObject
        y: height / 2
    }

Here height should be looked up in the context of "someObject", not of the
PropertyChanges element.

This patch introduces an auto-test that verifies that the lookup context is
correct and fixes the bug by disabling accelerated compile time property
lookups for binding expressions that are requested from a custom parser.

Change-Id: I5cb607d07211b453ddfc9928ccbf5f9ecec85575
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmllanguage/data/customParserBindingScopes.qml b/tests/auto/qml/qqmllanguage/data/customParserBindingScopes.qml
new file mode 100644
index 0000000000..2efc199f32
--- /dev/null
+++ b/tests/auto/qml/qqmllanguage/data/customParserBindingScopes.qml
@@ -0,0 +1,19 @@
+import Test 1.0
+import QtQml 2.0
+QtObject {
+    id: root
+
+    property int otherProperty: 10
+
+    property QtObject child: QtObject {
+        id: child
+
+        property int testProperty;
+        property int otherProperty: 41
+
+        property QtObject customBinder: CustomBinding {
+            target: child
+            testProperty: otherProperty + 1
+        }
+    }
+}