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correctly type Expr.ofTupleFromSeq for arity > 22 #17261

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merged 3 commits into from
Apr 17, 2023

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bishabosha
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identified that for all Seq with arity <= 22, the result had the most precise type possible, for > 22 then it was only Tuple

fixes #17257

@bishabosha bishabosha enabled auto-merge April 14, 2023 10:17
@bishabosha
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Also seeing the same failure here: tests/neg-custom-args/fatal-warnings/i15503g.scala it was failing #16056 too. Does anyone know what it is?

@dwijnand
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Looks like a semantic merge conflict on the Wunused merges? @szymon-rd wdyt?

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Ah yeah, #17263

@nicolasstucki
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@bishabosha also take into account #17257 (comment)

@bishabosha
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@nicolasstucki I added a test for Expr.ofTuple with 23 elems

@bishabosha bishabosha merged commit 6980b2e into scala:main Apr 17, 2023
@bishabosha bishabosha deleted the fix-oftuplefromseq branch April 17, 2023 17:56
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could this be backported for 3.3.1 ?

@Kordyjan Kordyjan added this to the 3.3.1 milestone Aug 2, 2023
private def tupleTypeFromSeq(seq: Seq[Expr[Any]])(using Quotes): quotes.reflect.TypeRepr =
import quotes.reflect.*
val consRef = Symbol.classSymbol("scala.*:").typeRef
seq.foldLeft(TypeRepr.of[EmptyTuple]) { (ts, expr) =>
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asExprOf fails for tuples larger than 22
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