[dexter] Add support for Visual Studio 2019 to Dexter

[n-omer]

Summary

This diff adds support for the Visual Studio 2019 debugger to Dexter.

[TWeaver]

Hi Nabeel,

this has been up for a while now, looks good to my eyes and adds a potentially much needed for future test writers.

thanks for this and LGTM

I'll get this committed for you shortly.

[MaskRay]

We don't place a Author: tag because it is already on the author/committer lines.

[TWeaver]

@MaskRay duly noted, thanks for the info.

debuginfo-tests/dexter/dex/debugger/Debuggers.py

 from dex.utils.Exceptions import DebuggerException
 
 from dex.debugger.DebuggerControllers.DefaultController import DefaultController
 
 from dex.debugger.dbgeng.dbgeng import DbgEng
 from dex.debugger.lldb.LLDB import LLDB
 from dex.debugger.visualstudio.VisualStudio2015 import VisualStudio2015
 from dex.debugger.visualstudio.VisualStudio2017 import VisualStudio2017
+from dex.debugger.visualstudio.VisualStudio2019 import VisualStudio2019
 
 
 def _get_potential_debuggers():  # noqa
     """Return a dict of the supported debuggers.
     Returns:
         { name (str): debugger (class) }
     """
     return {
         DbgEng.get_option_name(): DbgEng,
         LLDB.get_option_name(): LLDB,
         VisualStudio2015.get_option_name(): VisualStudio2015,
-        VisualStudio2017.get_option_name(): VisualStudio2017
+        VisualStudio2017.get_option_name(): VisualStudio2017,
+        VisualStudio2019.get_option_name(): VisualStudio2019
     }
 
 
 def _warn_meaningless_option(context, option):
     if hasattr(context.options, 'list_debuggers'):
         return
 
     warn(context,

debuginfo-tests/dexter/dex/debugger/visualstudio/VisualStudio2019.py

+# DExTer : Debugging Experience Tester
+# ~~~~~~   ~         ~~         ~   ~~
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+"""Specializations for the Visual Studio 2019 interface."""
+
+from dex.debugger.visualstudio.VisualStudio import VisualStudio
+
+
+class VisualStudio2019(VisualStudio):
+    @classmethod
+    def get_name(cls):
+        return 'Visual Studio 2019'
+
+    @classmethod
+    def get_option_name(cls):
+        return 'vs2019'
+
+    @property
+    def _dte_version(self):
+        return 'VisualStudio.DTE.16.0'