This patch introduces a new scripting affordance in lldb:
`ScriptedFrame`.

This allows user to produce mock stackframes in scripted threads and
scripted processes from a python script.

With this change, StackFrame can be synthetized from different sources:
- Either from a dictionary containing a load address, and a frame index,
  which is the legacy way.
- Or by creating a ScriptedFrame python object.

One particularity of synthezising stackframes from the ScriptedFrame
python object, is that these frame have an optional PC, meaning that
they don't have a report a valid PC and they can act as shells that just
contain static information, like the frame function name, the list of
variables or registers, etc. It can also provide a symbol context.

rdar://157260006

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

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

This patch adds new requirements to the Scripted Interface abstract
method checker to check the minimum number of argument for abstract
methods.

This check is done when creating the interface object so the object is
not created if the user implementation doesn't match the abstract method
requirement.

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

Reverts https://github.com/llvm/llvm-project/pull/97273 since it broke
the windows bot:

https://lab.llvm.org/buildbot/#/builders/141/builds/1025/steps/4/logs/stdio

This patch tries to fix the following build failure on windows:

https://lab.llvm.org/buildbot/#/builders/141/builds/1083

This started happening following 2914a4b88837, and it seems to be caused
by some special `#include` ordering for the lldb-python header on Windows.

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

This patch enforces that every scripted object implements all the
necessary abstract methods.

Every scripted affordance language interface can implement a list of
abstract methods name that checked when the object is instanciated.

Since some scripting affordances implementations can be derived from
template base classes, we can't check the object dictionary since it
will contain the definition of the base class, so instead, this checks
the scripting class dictionary.

Previously, for the various python interfaces, we used
`ABC.abstractmethod` decorators but this is too language specific and
doesn't work for scripting affordances that are not derived from
template base classes (i.e OperatingSystem, ScriptedThreadPlan, ...), so
this patch provides generic/language-agnostic checks for every scripted
affordance.

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

This reverts commit cc9ad72713405ef8f2468c7a714a137b4a3343ba since it
breaks some tests upstream:

https://lab.llvm.org/buildbot/#/builders/68/builds/63112

********************
Failed Tests (4):
  lldb-api :: functionalities/gdb_remote_client/TestThreadSelectionBug.py
  lldb-api :: functionalities/plugins/python_os_plugin/TestPythonOSPlugin.py
  lldb-api :: functionalities/plugins/python_os_plugin/stepping_plugin_threads/TestOSPluginStepping.py
  lldb-api :: functionalities/postmortem/mach-core/TestMachCore.py

This patch enforces that every scripted object implements all the
necessary abstract methods.

Every scripted affordance language interface can implement a list of
abstract methods name that checked when the object is instanciated.

Since some scripting affordances implementations can be derived from
template base classes, we can't check the object dictionary since it
will contain the definition of the base class, so instead, this checks
the scripting class dictionary.

Previously, for the various python interfaces, we used
`ABC.abstractmethod` decorators but this is too language specific and
doesn't work for scripting affordances that are not derived from
template base classes (i.e OperatingSystem, ScriptedThreadPlan, ...), so
this patch provides generic/language-agnostic checks for every scripted
affordance.

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

This patch changes the way plugin objects used with Scripted Interfaces
are created.

Instead of implementing a different SWIG method to create the object for
every scripted interface, this patch makes the creation more generic by
re-using some of the ScriptedPythonInterface templated Dispatch code.

This patch also improves error handling of the object creation by
returning an `llvm::Expected`.

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

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

As we're consolidating and  streamlining the various scripting
affordances of lldb, we keep creating new interface files.

This patch groups all the current interface files into a separate sub
directory called `Interfaces` both in the core `Interpreter` directory
and the `ScriptInterpreter` plugin directory.

Differential Revision: https://reviews.llvm.org/D158833

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