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Move Unliftable extractors in Unlifted #8517

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Merged
liufengyun merged 2 commits into from
Mar 11, 2020
Merged

Move Unliftable extractors in Unlifted #8517

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7b038d3
Move Unliftable extractors in Unlifted
nicolasstucki Mar 11, 2020
594befa
Add Expr.{unlift, unlifted}
nicolasstucki Mar 11, 2020
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23 changes: 20 additions & 3 deletions library/src/scala/quoted/Expr.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -18,15 +18,32 @@ class Expr[+T] private[scala] {
* Returns `None` if the expression does not contain a value or contains side effects.
* Otherwise returns the `Some` of the value.
*/
@deprecated("Use Expr.unlift", "0.23")
final def getValue[U >: T](using qctx: QuoteContext, unlift: Unliftable[U]): Option[U] = unlift(this)

/** Return the value of this expression.
/** Return the unlifted value of this expression.
*
* Returns `None` if the expression does not contain a value or contains side effects.
* Otherwise returns the `Some` of the value.
*/
final def unlift[U >: T](using qctx: QuoteContext, unlift: Unliftable[U]): Option[U] =
unlift(this)

/** Return the unlifted value of this expression.
*
* Emits an error error and throws if the expression does not contain a value or contains side effects.
* Otherwise returns the value.
*/
@deprecated("Use Expr.unlifted", "0.23")
final def value[U >: T](using qctx: QuoteContext, unlift: Unliftable[U]): U = unlifted

/** Return the unlifted value of this expression.
*
* Emits an error error and throws if the expression does not contain a value or contains side effects.
* Otherwise returns the value.
*/
final def value[U >: T](using qctx: QuoteContext, unlift: Unliftable[U]): U =
unlift(this).getOrElse(qctx.throwError(s"Expected a known value. \n\nThe value of: $show\ncould not be recovered using $unlift", this))
final def unlifted[U >: T](using qctx: QuoteContext, unlift: Unliftable[U]): U =
unlift(this).getOrElse(qctx.throwError(s"Expected a known value. \n\nThe value of: $show\ncould not be unlifted using $unlift", this))

/** Pattern matches `this` against `that`. Effectively performing a deep equality check.
* It does the equivalent of
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