V4: Allow some more functions to be inlined.

Change-Id: If9d1f87fd7cf0b12d2827c4574109234be7e8ab8
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4engine_p.h b/src/qml/jsruntime/qv4engine_p.h
index 12ed98e6e7..7da4a1c3c1 100644
--- a/src/qml/jsruntime/qv4engine_p.h
+++ b/src/qml/jsruntime/qv4engine_p.h
@@ -500,6 +500,35 @@ inline void ExecutionEngine::popContext()
     current = currentContext->d();
 }
 
+inline ExecutionContext *ExecutionEngine::parentContext(ExecutionContext *context) const
+{
+    Value *offset = static_cast<Value *>(context) + 1;
+    Q_ASSERT(offset->isInteger());
+    int o = offset->integerValue();
+    return o ? context - o : 0;
+}
+
+inline Heap::QmlContext *ExecutionEngine::qmlContext() const
+{
+    Heap::ExecutionContext *ctx = current;
+
+    // get the correct context when we're within a builtin function
+    if (ctx->type == Heap::ExecutionContext::Type_SimpleCallContext && !ctx->outer)
+        ctx = parentContext(currentContext)->d();
+
+    if (!ctx->outer)
+        return 0;
+
+    while (ctx->outer && ctx->outer->type != Heap::ExecutionContext::Type_GlobalContext)
+        ctx = ctx->outer;
+
+    Q_ASSERT(ctx);
+    if (ctx->type != Heap::ExecutionContext::Type_QmlContext)
+        return 0;
+
+    return static_cast<Heap::QmlContext *>(ctx);
+}
+
 inline
 void Heap::Base::mark(QV4::ExecutionEngine *engine)
 {