# runtime

> SearchExpressionRuntime associated with this context. The runtime stores all runtime data (stack frames, stack of contex and items) necessary for evaluation of a SearchExpression.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor.Search](/engine/6000.7/script-reference/unityeditor/search.md)
* **Assembly:** UnityEditor

```csharp
public readonly SearchExpressionRuntime runtime
```