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ad632d825d
It's disappointing to have to do this, but I think necessary because various issue reports have shown it to be unsound (at least as far as inference goes) and, at the very least, confusing. This patch brings us back to the basic rules of QTT. On the one hand, this makes the 1 multiplicity less useful, because it means we can't flag arguments as being used exactly once which would be useful for optimisation purposes as well as precision in the type. On the other hand, it removes some complexity (and a hack) from unification, and has the advantage of being correct! Also, I still consider the 1 multiplicity an experiment. We can still do interesting things like protocol state tracking, which is my primary motivation at least. Ideally, if the 1 multiplicity is going to be more generall useful, we'll need some kind of way of doing multiplicity polymorphism in the future. I don't think subtyping is the way (I've pretty much always come to regret adding some form of subtyping). Fixes #73 (and maybe some others).
36 lines
1.2 KiB
Plaintext
36 lines
1.2 KiB
Plaintext
1/1: Building refprims (refprims.idr)
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LOG 0: Name: Prelude.Types.List.++
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LOG 0: Type: (%pi Rig0 Implicit (Just a) %type (%pi RigW Explicit (Just xs) (Prelude.Types.List a) (%pi RigW Explicit (Just ys) (Prelude.Types.List a) (Prelude.Types.List a))))
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LOG 0: Name: Prelude.Types.Strings.++
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LOG 0: Type: (%pi RigW Explicit (Just x) String (%pi RigW Explicit (Just y) String String))
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LOG 0: Resolved name: Prelude.Types.Nat
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LOG 0: Constructors: [Prelude.Types.Z, Prelude.Types.S]
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Error: While processing right hand side of dummy1. Error during reflection: Not really trying
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refprims.idr:43:10--43:27
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43 | dummy1 = %runElab logPrims
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| ^^^^^^^^^^^^^^^^^
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Error: While processing right hand side of dummy2. Error during reflection: Still not trying
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refprims.idr:46:10--46:30
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46 | dummy2 = %runElab logDataCons
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| ^^^^^^^^^^^^^^^^^^^^
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Error: While processing right hand side of dummy3. Error during reflection: Undefined name
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refprims.idr:49:10--49:25
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49 | dummy3 = %runElab logBad
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| ^^^^^^^^^^^^^^^
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Error: While processing right hand side of dummy4. Error during reflection: failed after generating Main.{plus:XXXX}
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refprims.idr:52:10--52:28
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52 | dummy4 = %runElab tryGenSym
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| ^^^^^^^^^^^^^^^^^^
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