lib: Split collections into readable and writable

[nit.git] / src / metamodel / static_type.nit

diff --git a/src/metamodel/static_type.nit b/src/metamodel/static_type.nit
index 627fe9e..6cf53b7 100644 (file)
--- a/src/metamodel/static_type.nit
+++ b/src/metamodel/static_type.nit
@@ -122,7 +122,7 @@ class MMSignature
 
        redef meth to_s
        do
-               var s: String
+               var s = new Buffer
                if _params != null and _params.length > 0 then
                        var tmp: String
                        var a = new Array[String].with_capacity(_params.length)
@@ -132,14 +132,12 @@ class MMSignature
                                #a.add("{pn}: {p}")
                                a.add(p.to_s)
                        end
-                       s = "({a.join(",")})"
-               else
-                       s = ""
+                       s.append("({a.join(",")})")
                end
                if _return_type != null then
                        s.append(": {_return_type}")
                end
-               return s
+               return s.to_s
        end
 
        # Adapt the signature to a different receiver