Do not extend NamedVar with Kind.Identifier in DPIA#190
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@Bastacyclop @michel-steuwer This PR:
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Bastacyclop
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Jun 21, 2021
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| def renaming[X <: PhraseType](p: Phrase[X]): Phrase[X] = { | ||
| case class Renaming(idMap: Map[String, String]) extends VisitAndRebuild.Visitor { | ||
| override def phrase[T <: PhraseType](p: Phrase[T]): Result[Phrase[T]] = p match { | ||
| case Identifier(name, t) => Stop( | ||
| Identifier(idMap.getOrElse(name, name), | ||
| VisitAndRebuild.visitPhraseTypeAndRebuild(t, this)).asInstanceOf[Phrase[T]]) | ||
| case l @ Lambda(x, _) => | ||
| val newMap = idMap + (x.name -> freshName(x.name.takeWhile(_.isLetter))) | ||
| Continue(l, Renaming(newMap)) | ||
| case dl @ DepLambda(_, x, _) => | ||
| val newMap = idMap + (x.name -> freshName(x.name.takeWhile(_.isLetter))) | ||
| Continue(dl, Renaming(newMap)) | ||
| case _ => Continue(p, this) | ||
| } | ||
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| override def nat[N <: Nat](n: N): N = n.visitAndRebuild({ | ||
| case i: NatIdentifier => | ||
| NatIdentifier(idMap.getOrElse(i.name, i.name)) | ||
| case ae => ae | ||
| }).asInstanceOf[N] | ||
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| override def data[T <: DataType](dt: T): T = (dt match { | ||
| case i: DataTypeIdentifier => | ||
| DataTypeIdentifier(idMap.getOrElse(i.name, i.name)) | ||
| case dt => dt | ||
| }).asInstanceOf[T] | ||
| } | ||
| VisitAndRebuild(p, Renaming(Map())) | ||
| } |
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I think that if we don't try to enforce unique names anymore, we should use proper capture-avoiding substitution here?
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@Bastacyclop can you create an issue for that, please?
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| case pf@ParForNat(level, dim, _, name) if (eliminateVars(pf.body.asInstanceOf[DepLambda[_, _ <: Kind.Identifier, _]].x.name)) => | ||
| case pf@ParForNat(level, dim, _, name) if (eliminateVars(Kind.idName( | ||
| pf.body.asInstanceOf[DepLambda[_, _, _ <: Kind.Identifier, _]].kind, | ||
| pf.body.asInstanceOf[DepLambda[_, _, _ <: Kind.Identifier, _]].x))) => |
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Maybe there is a better way to write this to avoid triple casting.
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This way
NamedVars are uniform across RISE, DPIA, and arithexpr. This accomplishes two things:DPIA -> arithexpr -> DPIAtranslations irrelevant.