[llvm] [Dexter] Add basic structured script parsing (PR #193710)

[Orlando Cazalet-Hyams via llvm-commits]

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@@ -115,6 +121,15 @@ def _init_debugger_controller(self):
             dexter_version=self.context.version,
         )
 
+        if self.context.options.use_script:
+            step_collection.script, new_source_files = get_dexter_script(
+                self.context,
+                self.context.options.test_files[0],
+                self.context.options.source_root_dir,
+            )
+            # Functionality not yet implemented.
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OCHyams wrote:

 `# Functionality not yet implemented.`  I know this is temporary, but could be worth adding an assert here to make it clear? (someone might bisect to this commit and get weird behaviour?)

https://github.com/llvm/llvm-project/pull/193710