Better error message in splitter

odersky · odersky · commit 300992407ca0 · 2015-12-15T17:51:23.000+01:00
diff --git a/src/dotty/tools/dotc/transform/Splitter.scala b/src/dotty/tools/dotc/transform/Splitter.scala
@@ -47,7 +47,10 @@ class Splitter extends MiniPhaseTransform { thisTransform =>
       if (!mbr.isOverloaded) mbr.asSingleDenotation
       else tree.tpe match {
         case tref: TermRefWithSignature => mbr.atSignature(tref.sig)
-        case _ => ctx.error(s"cannot disambiguate overloaded member $mbr"); NoDenotation
+        case _ =>
+          def alts = mbr.alternatives.map(alt => i"$alt: ${alt.info}").mkString(", ")
+          ctx.error(s"cannot disambiguate overloaded members $alts", tree.pos)
+          NoDenotation
       }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,10 @@ class Splitter extends MiniPhaseTransform { thisTransform =>`
`47`	`47`	`if (!mbr.isOverloaded) mbr.asSingleDenotation`
`48`	`48`	`else tree.tpe match {`
`49`	`49`	`case tref: TermRefWithSignature => mbr.atSignature(tref.sig)`
`50`		`- case _ => ctx.error(s"cannot disambiguate overloaded member $mbr"); NoDenotation`
	`50`	`+ case _ =>`
	`51`	`+ def alts = mbr.alternatives.map(alt => i"$alt: ${alt.info}").mkString(", ")`
	`52`	`+ ctx.error(s"cannot disambiguate overloaded members $alts", tree.pos)`
	`53`	`+ NoDenotation`
`51`	`54`	`}`
`52`	`55`	`}`
`53`	`56`