diff options
Diffstat (limited to 'src/dotty/tools/dotc/core/Denotations.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/Denotations.scala | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/core/Denotations.scala b/src/dotty/tools/dotc/core/Denotations.scala index 5ce8cbcd8..494df7547 100644 --- a/src/dotty/tools/dotc/core/Denotations.scala +++ b/src/dotty/tools/dotc/core/Denotations.scala @@ -146,6 +146,9 @@ object Denotations { /** Is this denotation different from NoDenotation or an ErrorDenotation? */ def exists: Boolean = true + /** A denotation with the info of this denotation transformed using `f` */ + def mapInfo(f: Type => Type)(implicit ctx: Context): Denotation + /** If this denotation does not exist, fallback to alternative */ final def orElse(that: => Denotation) = if (this.exists) this else that @@ -242,7 +245,7 @@ object Denotations { } else if (exists && !qualifies(symbol)) NoDenotation else asSingleDenotation - } + } /** Form a denotation by conjoining with denotation `that`. * @@ -456,6 +459,8 @@ object Denotations { else if (!d2.exists) d1 else derivedMultiDenotation(d1, d2) } + def mapInfo(f: Type => Type)(implicit ctx: Context): Denotation = + derivedMultiDenotation(denot1.mapInfo(f), denot2.mapInfo(f)) def derivedMultiDenotation(d1: Denotation, d2: Denotation) = if ((d1 eq denot1) && (d2 eq denot2)) this else MultiDenotation(d1, d2) override def toString = alternatives.mkString(" <and> ") @@ -488,6 +493,9 @@ object Denotations { if ((symbol eq this.symbol) && (info eq this.info)) this else newLikeThis(symbol, info) + def mapInfo(f: Type => Type)(implicit ctx: Context): SingleDenotation = + derivedSingleDenotation(symbol, f(info)) + def orElse(that: => SingleDenotation) = if (this.exists) this else that def altsWith(p: Symbol => Boolean): List[SingleDenotation] = |