[vala/staging] vala: Add UnaryOperator.to_string()

[Rico Tzschichholz <ricotz src gnome org>]

commit bddb420a814a4f19dd2ed93d7896557aa73974b1
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu Nov 15 17:26:19 2018 +0100

    vala: Add UnaryOperator.to_string()

 vala/valaunaryexpression.vala | 33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)
---
diff --git a/vala/valaunaryexpression.vala b/vala/valaunaryexpression.vala
index 7ccbecb1d..ce5e4a062 100644
--- a/vala/valaunaryexpression.vala
+++ b/vala/valaunaryexpression.vala
@@ -77,22 +77,8 @@ public class Vala.UnaryExpression : Expression {
                }
        }
 
-       private unowned string get_operator_string () {
-               switch (_operator) {
-               case UnaryOperator.PLUS: return "+";
-               case UnaryOperator.MINUS: return "-";
-               case UnaryOperator.LOGICAL_NEGATION: return "!";
-               case UnaryOperator.BITWISE_COMPLEMENT: return "~";
-               case UnaryOperator.INCREMENT: return "++";
-               case UnaryOperator.DECREMENT: return "--";
-               case UnaryOperator.REF: return "ref ";
-               case UnaryOperator.OUT: return "out ";
-               default: assert_not_reached ();
-               }
-       }
-
        public override string to_string () {
-               return get_operator_string () + _inner.to_string ();
+               return operator.to_string () + _inner.to_string ();
        }
 
        public override bool is_constant () {
@@ -291,5 +277,20 @@ public enum Vala.UnaryOperator {
        INCREMENT,
        DECREMENT,
        REF,
-       OUT
+       OUT;
+
+       public unowned string to_string () {
+               switch (this) {
+               case PLUS: return "+";
+               case MINUS: return "-";
+               case LOGICAL_NEGATION: return "!";
+               case BITWISE_COMPLEMENT: return "~";
+               case INCREMENT: return "++";
+               case DECREMENT: return "--";
+               case REF: return "ref ";
+               case OUT: return "out ";
+               default: assert_not_reached ();
+               }
+       }
+
 }