REPL: Sort displayed definitions

This makes REPL tests deterministic.

Author: allanrenucci

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

@@ -254,14 +254,16 @@ class ReplDriver(settings: Array[String],
             denot.symbol.owner == defn.ObjectClass ||
             denot.symbol.isConstructor
           }
+          .sortBy(_.name)
 
       val vals =
         info.fields
           .filterNot(_.symbol.is(ParamAccessor | Private | Synthetic | Module))
           .filter(_.symbol.name.is(SimpleNameKind))
+          .sortBy(_.name)
 
       val typeAliases =
-        info.bounds.hi.typeMembers.filter(_.symbol.info.isTypeAlias)
+        info.bounds.hi.typeMembers.filter(_.symbol.info.isTypeAlias).sortBy(_.name)
 
       (
         typeAliases.map("// defined alias " + _.symbol.showUser) ++

compiler/test-resources/repl/top-level-block

@@ -10,13 +10,13 @@ scala> A()
 val res2: A = A()
 
 scala> { def f: Int = g; def g: Int = 5 }
-def g: Int
 def f: Int
+def g: Int
 
 scala> f + g
 val res3: Int = 10
 
 scala> { val x = 3; 4; val y = 5 }
-val x: Int = 3
 val res4: Int = 4
+val x: Int = 3
 val y: Int = 5

compiler/test/dotty/tools/repl/ReplCompilerTests.scala

@@ -48,10 +48,10 @@ class ReplCompilerTests extends ReplTest {
 
     val expected = List(
       "def foo: Int",
-      "val x: Int = 10",
       "val res0: Int = 2",
-      "var y: Int = 5",
-      "val res1: Int = 20"
+      "val res1: Int = 20",
+      "val x: Int = 10",
+      "var y: Int = 5"
     )
 
     assertEquals(expected, lines())

language-server/test/dotty/tools/languageserver/WorksheetTest.scala

@@ -85,7 +85,7 @@ class WorksheetTest {
 
   @Test def patternMatching1: Unit = {
     ws"""${m1}val (foo, bar) = (1, 2)""".withSource
-      .run(m1, s"1:val foo: Int = 1${nl}val bar: Int = 2")
+      .run(m1, s"1:val bar: Int = 2${nl}val foo: Int = 1")
   }
 
   @Test def evaluationException: Unit = {