Rework custom parser integration

The custom parser design used to be so that the custom parser operates on the "AST",
creates its own binary representation of the data it needs, stores it in a QByteArray
and gets that at object instantiation time. That meant serializing everything necessary.
With the introduction of the "binary" QML data structure, that process of serialization
becomes obsolete and would require extra work in the custom parsers for example for QQuickStates
to store the translation parameters.

The clean solution is to eliminate this unnecessary serialization process and
instead let the custom parsers do a verification pass at type compile time and
then simply operate directly on the QV4::CompiledData::Bindings at object
instantiation time. That simplifies the code, and allows for support of
translations throughout all list model properties.

Additionally this speeds up the creation of state objects and reduces memory
consumption. Previously a text: qsTr("foo") binding in states would result in
an actual java script binding. After this patch it is merely stored as a string
and translated at object instantiation time.

Change-Id: I7550274513f54abb09a0ab4de51c4c0bcdb23cae
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 11 insertions, 9 deletions

diff --git a/tests/auto/qml/qqmllanguage/testtypes.h b/tests/auto/qml/qqmllanguage/testtypes.h
index 1c13a2e21c..509cf40e47 100644
--- a/tests/auto/qml/qqmllanguage/testtypes.h
+++ b/tests/auto/qml/qqmllanguage/testtypes.h
@@ -54,7 +54,7 @@
 #include <QtQml/qqmlpropertyvaluesource.h>
 #include <QtQml/qqmlscriptstring.h>
 #include <QtQml/qqmlproperty.h>
-
+#include <private/qqmlcompiler_p.h>
 #include <private/qqmlcustomparser_p.h>
 
 QVariant myCustomVariantTypeConverter(const QString &data);
@@ -739,15 +739,15 @@ class MyCustomParserType : public QObject
 class MyCustomParserTypeParser : public QQmlCustomParser
 {
 public:
-    QByteArray compile(const QV4::CompiledData::QmlUnit *, const QList<const QV4::CompiledData::Binding *> &) { return QByteArray(); }
-    void setCustomData(QObject *, const QByteArray &, QQmlCompiledData*) {}
+    virtual void verifyBindings(const QV4::CompiledData::QmlUnit *, const QList<const QV4::CompiledData::Binding *> &) {}
+    virtual void applyBindings(QObject *, QQmlCompiledData *, const QList<const QV4::CompiledData::Binding *> &) {}
 };
 
 class EnumSupportingCustomParser : public QQmlCustomParser
 {
 public:
-    QByteArray compile(const QV4::CompiledData::QmlUnit *qmlUnit, const QList<const QV4::CompiledData::Binding *> &bindings);
-    void setCustomData(QObject *, const QByteArray &, QQmlCompiledData*) {}
+    virtual void verifyBindings(const QV4::CompiledData::QmlUnit *, const QList<const QV4::CompiledData::Binding *> &);
+    virtual void applyBindings(QObject *, QQmlCompiledData *, const QList<const QV4::CompiledData::Binding *> &) {}
 };
 
 class MyParserStatus : public QObject, public QQmlParserStatus
@@ -1112,13 +1112,15 @@ public:
     void setTarget(QObject *newTarget) { m_target = newTarget; }
 
     QPointer<QObject> m_target;
+    QQmlRefPointer<QQmlCompiledData> cdata;
+    QList<const QV4::CompiledData::Binding*> bindings;
     QByteArray m_bindingData;
 };
 
 class CustomBindingParser : public QQmlCustomParser
 {
-    virtual QByteArray compile(const QV4::CompiledData::QmlUnit *qmlUnit, const QList<const QV4::CompiledData::Binding *> &bindings);
-    virtual void setCustomData(QObject *object, const QByteArray &data, QQmlCompiledData *);
+    virtual void verifyBindings(const QV4::CompiledData::QmlUnit *, const QList<const QV4::CompiledData::Binding *> &) {}
+    virtual void applyBindings(QObject *, QQmlCompiledData *, const QList<const QV4::CompiledData::Binding *> &);
 };
 
 class SimpleObjectWithCustomParser : public QObject
@@ -1144,8 +1146,8 @@ private:
 
 class SimpleObjectCustomParser : public QQmlCustomParser
 {
-    virtual QByteArray compile(const QV4::CompiledData::QmlUnit *, const QList<const QV4::CompiledData::Binding *> &bindings);
-    virtual void setCustomData(QObject *object, const QByteArray &data, QQmlCompiledData *);
+    virtual void verifyBindings(const QV4::CompiledData::QmlUnit *, const QList<const QV4::CompiledData::Binding *> &) {}
+    virtual void applyBindings(QObject *, QQmlCompiledData *, const QList<const QV4::CompiledData::Binding *> &);
 };
 
 class RootObjectInCreationTester : public QObject