Merge pull request #3420 from DSouzaM/not-a-member-err

Use new NotAMember new error format in PostTyper

Author: allanrenucci

compiler/src/dotty/tools/dotc/transform/PostTyper.scala

@@ -14,7 +14,7 @@ import util.Positions._
 import Decorators._
 import config.Printers.typr
 import Symbols._, TypeUtils._, SymUtils._
-import reporting.diagnostic.messages.SuperCallsNotAllowedInline
+import reporting.diagnostic.messages.{NotAMember, SuperCallsNotAllowedInline}
 
 /** A macro transform that runs immediately after typer and that performs the following functions:
  *
@@ -272,7 +272,7 @@ class PostTyper extends MacroTransform with IdentityDenotTransformer { thisPhase
           def checkIdent(ident: untpd.Ident): Unit = {
             val name = ident.name.asTermName
             if (name != nme.WILDCARD && !exprTpe.member(name).exists && !exprTpe.member(name.toTypeName).exists)
-              ctx.error(s"${ident.name} is not a member of ${expr.show}", ident.pos)
+              ctx.error(NotAMember(exprTpe, name, "value"), ident.pos)
           }
           selectors.foreach {
             case ident: untpd.Ident                 => checkIdent(ident)

compiler/test-resources/repl/importFromObj

@@ -15,7 +15,7 @@ val res0: scala.collection.mutable.ListBuffer[Int] = ListBuffer(1, 2, 3)
 scala> import util.foo
 1 | import util.foo
   |             ^^^
-  |             foo is not a member of util
+  |           value `foo` is not a member of util - did you mean `util.Left`?
 scala> import util.foo.bar
 1 | import util.foo.bar
   |        ^^^^^^^^