[Dexter] Add DAP support for Dexter, including lldb-dap (#149394)

This patch adds a new variety of driver to Dexter, allowing it to work
with DAP-based interfaces for debuggers. The first concrete instance of
this is implemented in this patch, adding support for an `lldb-dap`
debugger. This is functionally very similar to the existing LLDB
debugger support*, but uses lldb-dap as its executable instead of lldb.

This has been tested successfully against the existing feature_test
suite, and manually tested against some other inputs; support is
essentially complete, although any further DAP-based debuggers may
require additional hooks inserted into the base class to deal with any
idiosyncrasies they exhibit (as with the several that have been inserted
for lldb-dap).

NB: There are some small differences resulting from differences between
lldb-dap's use of the lldb API and Dexter's use in its lldb driver; one
small example of this is when evaluating variables, lldb-dap will try to
first use `GetValueForVariablePath` and fallback to `EvaluateExpression`
if necessary, while Dexter will always use `EvaluateExpression`; these
can give slightly different results, resulting in different output from
Dexter for the same input.

1 files changed, 1 insertions, 1 deletions

diff --git a/cross-project-tests/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py b/cross-project-tests/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py
index ac3054c3a0ed..c53f1419ee13 100644
--- a/cross-project-tests/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py
+++ b/cross-project-tests/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py
@@ -181,7 +181,7 @@ class ConditionalController(DebuggerControllerBase):
                     )
                     timed_out = True
 
-            if timed_out:
+            if timed_out or self.debugger.is_finished:
                 break
 
             step_info = self.debugger.get_step_info(self._watches, self._step_index)