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Add type variables to unquote context, if they implement ToExpr #10

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Add type variables to unquote context, if they implement ToExpr #10

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alexkeizer
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If a variable α : Type u implements ToExpr, then add it to the context available inside q(...) and Q(...), with the quoted value of ToExpr.toTypeExpr.

This resolves #9, enabling us to write, e.g.,

import Qq
open Qq Lean


def listToExpr {α : Type} [ToExpr α] : List α → Q(List $α)
  | []       => q([])
  | a :: as  => q($a :: $(listToExpr as))

RaitoBezarius
RaitoBezarius reviewed Apr 17, 2023
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@alexkeizer alexkeizer closed this Jun 1, 2023
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Antiquotations don't work for generic types (even if they implement ToExpr)
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@alexkeizer @RaitoBezarius