annotation: `as_id` works with operators and setters

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/annotation.nit b/src/annotation.nit
index 3223b7c..af63ad3 100644 (file)
--- a/src/annotation.nit
+++ b/src/annotation.nit
@@ -121,6 +121,9 @@ redef class AExpr
        # Return null if not a single identifier.
        fun as_id: nullable String
        do
+               if self isa AMethidExpr then
+                       return self.collect_text
+               end
                if not self isa ACallExpr then return null
                if not self.n_expr isa AImplicitSelfExpr then return null
                if not self.n_args.n_exprs.is_empty then return null