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Utility for printing resolved implicit chain #21878
jatcwang
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Feature Requests
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I recently was debugging implicit resolution issues and I found it quite useful to print out the fully resolved implicit chain
This is the basic implementation I had:
import scala.quoted.*
inline def printResolvedImplicit[A]: Unit =
${ printResolvedImplicitImpl[A] }
private def printResolvedImplicitImpl[A](using quotes: Quotes, t: Type[A]): Expr[Unit] =
import quotes.reflect.*
Expr.summon[A].match {
case Some(ex) => println(ex.asTerm.show(using Printer.TreeCode))
case None => report.error("Implicit resolution failed")
}
'{ () }
Does something exist in the Scala 3 std lib? Is it useful enough to be included?
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