Remove show in repl; use .toString instead

Author: OlivierBlanvillain

compiler/src/dotty/tools/repl/ReplCompiler.scala

@@ -53,7 +53,7 @@ class ReplCompiler(val directory: AbstractFile) extends Compiler {
       }
 
       (1 to objectIndex)
-        .foldLeft(addImport("dotty.Show".toTermName)(initCtx)) { (ictx, i) =>
+        .foldLeft(initCtx) { (ictx, i) =>
           addImport(nme.EMPTY_PACKAGE ++ "." ++ objectNames(i))(ictx)
         }
     }
@@ -76,7 +76,7 @@ class ReplCompiler(val directory: AbstractFile) extends Compiler {
 
     def createShow(name: TermName, pos: Position) = {
       val showName = name ++ "Show"
-      val select = Select(Ident(name), "show".toTermName)
+      val select = Select(Ident(name), nme.toString_)
       val valAsAnyRef = TypeApply(Select(Ident(name), nme.asInstanceOf_),
                                   List(Ident(tpnme.AnyRef)))
       val cond = InfixOp(valAsAnyRef,
@@ -154,7 +154,6 @@ class ReplCompiler(val directory: AbstractFile) extends Compiler {
    *  package <none> {
    *    object rs$line$nextId {
    *      import rs$line${i <- 0 until nextId}._
-   *      import dotty.Show._
    *
    *      <trees>
    *    }

compiler/test-resources/repl/i3388

@@ -1,3 +1,3 @@
 scala> val foo = "1"; foo.toInt
-val foo: String = "1"
+val foo: String = 1
 val res0: Int = 1

compiler/test-resources/repl/renderEmptyString

@@ -0,0 +1,2 @@
+scala> val s = ""
+val s: String = ""

compiler/test-resources/type-printer/prefixless

@@ -1,7 +1,7 @@
 scala> List(1,2,3)
 val res0: List[Int] = List(1, 2, 3)
 scala> Map("foo" -> 1)
-val res1: Map[String, Int] = Map("foo" -> 1)
+val res1: Map[String, Int] = Map(foo -> 1)
 scala> Seq('a','b')
 val res2: Seq[Char] = List(a, b)
 scala> Set(4, 5)

compiler/test-resources/type-printer/vals

@@ -7,4 +7,4 @@ val xs: List[Int] = List(1)
 scala> scala.util.Try(1)
 val res0: scala.util.Try[Int] = Success(1)
 scala> Map(1 -> "one")
-val res1: Map[Int, String] = Map(1 -> "one")
+val res1: Map[Int, String] = Map(1 -> one)

library/src/dotty/Show.scala

@@ -1,5 +1,3 @@
-import dotty.Show._
-
 class Foo(x: Int)
 
 object Test {