[lldb/Plugins] Add Attach capabilities to ScriptedProcess

This patch adds process attach capabilities to the ScriptedProcess
plugin. This doesn't really expects a PID or process name, since the
process state is already script, however, this allows to create a
scripted process without requiring to have an executuble in the target.

In order to do so, this patch also turns the scripted process related
getters and setters from the `ProcessLaunchInfo` and
`ProcessAttachInfo` classes to a `ScriptedMetadata` instance and moves
it in the `ProcessInfo` class, so it can be accessed interchangeably.

This also adds the necessary SWIG wrappers to convert the internal
`Process{Attach,Launch}InfoSP` into a `SB{Attach,Launch}Info` to pass it
as argument the scripted process python implementation and convert it
back to the internal representation.

rdar://104577406

Differential Revision: https://reviews.llvm.org/D143104

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

2 files changed, 34 insertions, 0 deletions

diff --git a/lldb/bindings/python/python-swigsafecast.swig b/lldb/bindings/python/python-swigsafecast.swig
index a1e883b3b19d..ae562c26518c 100644
--- a/lldb/bindings/python/python-swigsafecast.swig
+++ b/lldb/bindings/python/python-swigsafecast.swig
@@ -93,6 +93,16 @@ PythonObject ToSWIGWrapper(const SymbolContext &sym_ctx) {
                       SWIGTYPE_p_lldb__SBSymbolContext);
 }
 
+PythonObject ToSWIGWrapper(lldb::ProcessLaunchInfoSP launch_info_sp) {
+   return ToSWIGHelper(new lldb::ProcessLaunchInfoSP(std::move(launch_info_sp)),
+                       SWIGTYPE_p_lldb__SBLaunchInfo);
+ }
+
+ PythonObject ToSWIGWrapper(lldb::ProcessAttachInfoSP attach_info_sp) {
+   return ToSWIGHelper(new lldb::ProcessAttachInfoSP(std::move(attach_info_sp)),
+                       SWIGTYPE_p_lldb__SBAttachInfo);
+ }
+
 ScopedPythonObject<lldb::SBCommandReturnObject>
 ToSWIGWrapper(CommandReturnObject &cmd_retobj) {
   return ScopedPythonObject<lldb::SBCommandReturnObject>(
diff --git a/lldb/bindings/python/python-wrapper.swig b/lldb/bindings/python/python-wrapper.swig
index 9a08c3000b79..26f79266538a 100644
--- a/lldb/bindings/python/python-wrapper.swig
+++ b/lldb/bindings/python/python-wrapper.swig
@@ -716,6 +716,30 @@ void *lldb_private::LLDBSWIGPython_CastPyObjectToSBData(PyObject * data) {
   return sb_ptr;
 }
 
+void *lldb_private::LLDBSWIGPython_CastPyObjectToSBAttachInfo(PyObject * data) {
+  lldb::SBAttachInfo *sb_ptr = nullptr;
+
+  int valid_cast =
+      SWIG_ConvertPtr(data, (void **)&sb_ptr, SWIGTYPE_p_lldb__SBAttachInfo, 0);
+
+  if (valid_cast == -1)
+    return NULL;
+
+  return sb_ptr;
+}
+
+void *lldb_private::LLDBSWIGPython_CastPyObjectToSBLaunchInfo(PyObject * data) {
+  lldb::SBLaunchInfo *sb_ptr = nullptr;
+
+  int valid_cast =
+      SWIG_ConvertPtr(data, (void **)&sb_ptr, SWIGTYPE_p_lldb__SBLaunchInfo, 0);
+
+  if (valid_cast == -1)
+    return NULL;
+
+  return sb_ptr;
+}
+
 void *lldb_private::LLDBSWIGPython_CastPyObjectToSBError(PyObject * data) {
   lldb::SBError *sb_ptr = nullptr;