1 files changed, 12 insertions, 5 deletions
diff --git a/src/qml/compiler/qv4compileddata_p.h b/src/qml/compiler/qv4compileddata_p.h
index 474d4c88bc..d6d2419d74 100644
--- a/src/qml/compiler/qv4compileddata_p.h
+++ b/src/qml/compiler/qv4compileddata_p.h
@@ -50,6 +50,10 @@
 
 QT_BEGIN_NAMESPACE
 
+namespace QmlIR {
+struct Document;
+}
+
 namespace QV4 {
 namespace IR {
 struct Function;
@@ -163,6 +167,7 @@ struct Unit
     char magic[8];
     qint16 architecture;
     qint16 version;
+    quint32 unitSize; // Size of the Unit and any depending data. Does _not_ include size of data needed by QmlUnit.
 
     enum {
         IsJavascript = 0x1,
@@ -198,8 +203,10 @@ struct Unit
         return QString(qstr.constData(), qstr.length());
     }
 
+    const uint *functionOffsetTable() const { return reinterpret_cast<const uint*>((reinterpret_cast<const char *>(this)) + offsetToFunctionTable); }
+
     const Function *functionAt(int idx) const {
-        const uint *offsetTable = reinterpret_cast<const uint*>((reinterpret_cast<const char *>(this)) + offsetToFunctionTable);
+        const uint *offsetTable = functionOffsetTable();
         const uint offset = offsetTable[idx];
         return reinterpret_cast<const Function*>(reinterpret_cast<const char *>(this) + offset);
     }
@@ -524,6 +531,7 @@ struct Import
 struct QmlUnit
 {
     Unit header;
+    quint32 qmlUnitSize; // size including header and all surrounding data.
     quint32 nImports;
     quint32 offsetToImports;
     quint32 nObjects;
@@ -578,16 +586,15 @@ struct Q_QML_EXPORT CompilationUnit
     QV4::Value *runtimeRegularExpressions;
     QV4::InternalClass **runtimeClasses;
     QVector<QV4::Function *> runtimeFunctions;
-//    QVector<QV4::Function *> runtimeFunctionsSortedByAddress;
+
+    // Called only when building QML, when we build the header for JS first and append QML data
+    virtual QV4::CompiledData::Unit *createUnitData(QmlIR::Document *irDocument);
 
     QV4::Function *linkToEngine(QV4::ExecutionEngine *engine);
     void unlink();
 
     virtual QV4::ExecutableAllocator::ChunkOfPages *chunkForFunction(int /*functionIndex*/) { return 0; }
 
-    // ### runtime data
-    // pointer to qml data for QML unit
-
     void markObjects(QV4::ExecutionEngine *e);
 
 protected: