Late expansion fixes #151
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Late expansion fixes #151
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Avoids mixing in all the specialized apply variants. We could go further and create an base class for all state machines, but that would require scala-async to be on the runtime classpath, which currently isn't a requirement. For now, I'm keeping it this way.
- Detect cross-state symbol references where the RefTree is nested
in a LabelDef. Failure to do so led to ill-scoped local variable
references which sometimes manifest as VerifyErrors.
- Emit a default case in the Match intended to be a tableswitch.
We have to do this ourselves if we expand after pattern matcher
- Cleanup generated code to avoid redundant blocks
- Avoid unnecessary `matchRes` temporary variable for unit-typed
pattern matches
- Fix the trace level logging in the ANF transform to restore
indented output.
- Emit `{ state = nextState; ... }` rather than
`try { ... } finally { state = nextState }` in state handlers.
This simplifies generated code and has the same meaning, as the
code in the state machine isn't reentrant and can't observe the
"early" transition of the state.
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Fixes for the async transform when invoked after pattern's have been translated.
Followup to #141