Merge pull request #2162 from abeln/infix-op

Fix #1959: infix type operators in the REPL

Author: DarkDimius

compiler/src/dotty/tools/dotc/ast/untpd.scala

@@ -526,11 +526,11 @@ object untpd extends Trees.Instance[Untyped] with UntypedTreeInfo {
       case Function(args, body) =>
         this(this(x, args), body)
       case InfixOp(left, op, right) =>
-        this(this(x, left), right)
+        this(this(this(x, left), op), right)
       case PostfixOp(od, op) =>
-        this(x, od)
+        this(this(x, od), op)
       case PrefixOp(op, od) =>
-        this(x, od)
+        this(this(x, op), od)
       case Parens(t) =>
         this(x, t)
       case Tuple(trees) =>

tests/repl/infixTypeOp.check

@@ -0,0 +1,5 @@
+scala> trait +[A, B]
+defined trait +
+scala> type IntAndString = Int + String
+defined type alias IntAndString
+scala> :quit