[lldb] Convert script native types to StructuredData counterpart

This patch adds the ability to pass native types from the script
interpreter to methods that use a {SB,}StructuredData argument.

To do so, this patch changes the `ScriptedObject` struture that holds
the pointer to the script object as well as the originating script
interpreter language. It also exposes that to the SB API via a new class
called `SBScriptObject`.

This structure allows the debugger to parse the script object and
convert it to a StructuredData object. If the type is not compatible
with the StructuredData types, we will store its pointer in a
`StructuredData::Generic` object.

This patch also adds some SWIG typemaps that checks the input argument to
ensure it's either an SBStructuredData object, in which case it just
passes it throught, or a python object that is NOT another SB type, to
provide some guardrails for the user.

rdar://111467140

Differential Revision: https://reviews.llvm.org/D155161

Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
index 902c7fa..55b7a73 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -1519,6 +1519,17 @@ ScriptInterpreterPythonImpl::CreateScriptedProcessInterface() {
   return std::make_unique<ScriptedProcessPythonInterface>(*this);
 }
 
+StructuredData::ObjectSP
+ScriptInterpreterPythonImpl::CreateStructuredDataFromScriptObject(
+    ScriptObject obj) {
+  void *ptr = const_cast<void *>(obj.GetPointer());
+  PythonObject py_obj(PyRefType::Borrowed, static_cast<PyObject *>(ptr));
+  if (!py_obj.IsValid() || py_obj.IsNone())
+    return {};
+  Locker py_lock(this, Locker::AcquireLock | Locker::NoSTDIN, Locker::FreeLock);
+  return py_obj.CreateStructuredObject();
+}
+
 StructuredData::GenericSP
 ScriptInterpreterPythonImpl::OSPlugin_CreatePluginObject(
     const char *class_name, lldb::ProcessSP process_sp) {