Fixing overlay experiments with instance variables #23
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…ryVariable and ArgumentVariable
updating ASTInterpreter and ASTPostOrderTreeVisitor according to new AST visitor API
…cy to the baseline
removing deprecated spec-debugger dependency + adding espell dependen…
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Tests were red in DebuggableASTInterpreterOverlays because overlays weren't created.
This was because, to register an overlay for a given pc when an instance variable was assigned, the
DASTOverlayInterpreter>>#write:toInstVarNamed:(that overridesDASTContext>>#write:toInstVarNamed:should have been called. However, it wasn't called as it was letting the DASTContext directly write into the instance variable.I fixed it so that the
DASTOverlayInterpreter>>#write:toInstVarNamed:is really called to create the overlays and all tests are green now (except those related to proxies as something is broken with Ghost).It shouldn't have any impact when we use the
DASTIntepreter>>#write:toInstVarNamed:lets the context directly write into the instance variable, just like before.This shouldn't be merged yet because I have to solve some conflicts and we should create a new branch for the overlay experiment, as we said