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Quoted pattern type variables without backticks
With this change we can support references to quote pattern type variables without backticks. ```scala case '{ type t; ... : F[t] } ``` SIP: https://github.com/scala/improvement-proposals/blob/main/content/quote-pattern-type-variable-syntax.md?plain=1#L66-L70 ```scala case '{ ... : F[t, t] } ``` SIP: https://github.com/scala/improvement-proposals/blob/main/content/quote-pattern-type-variable-syntax.md?plain=1#L72-L78
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9 changes: 9 additions & 0 deletions
9
tests/neg-custom-args/no-experimental/sip-53-exprimental-a.scala
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Original file line number | Diff line number | Diff line change |
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import scala.quoted.* | ||
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def foo(using Quotes): Unit = | ||
(??? : Type[?]) match | ||
case '[ (t, t, t) ] => // error // error | ||
'{ ??? : Any } match | ||
case '{ type u; $x: u } => // error | ||
case '{ type u; ($ls: List[u]).map($f: u => Int) } => // error // error | ||
|
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tests/pos-macros/quote-pattern-type-variable-no-escape.scala
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Original file line number | Diff line number | Diff line change |
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import scala.quoted.* | ||
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def foo[T: Type](expr: Expr[Any])(using Quotes): Any = | ||
expr match | ||
case '{ $x: Map[t, t] } => | ||
case '{ type t; $x: Any } => | ||
case '{ type t; $x: Map[t, t] } => | ||
case '{ ($x: Set[t]).toSet[t] } => | ||
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Type.of[T] match | ||
case '[Map[t, t]] => | ||
case '[(t, t, t, t, t, t, t)] => |