Pass an SBStructuredData to scripted ThreadPlans on use.

This will allow us to write reusable scripted ThreadPlans, since
you can use key/value pairs with known keys in the plan to parametrize
its behavior.

Differential Revision: https://reviews.llvm.org/D68366

llvm-svn: 373675

lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h

@@ -438,6 +438,10 @@ public:
   void Reset(PyRefType type, PyObject *py_obj) override;
 
   ArgInfo GetNumArguments() const;
+  
+  // If the callable is a Py_Class, then find the number of arguments
+  // of the __init__ method.
+  ArgInfo GetNumInitArguments() const;
 
   PythonObject operator()();