frontent/serialization: fix warnings

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/src/frontend/serialization_phase.nit b/src/frontend/serialization_phase.nit
index bb5cb8d..d15f490 100644 (file)
--- a/src/frontend/serialization_phase.nit
+++ b/src/frontend/serialization_phase.nit
@@ -121,7 +121,7 @@ private class SerializationPhasePreModel
                if not node isa AModuledecl then
                        var up_serialize = false
                        var up: nullable ANode = node
-                       loop
+                       while up != null do
                                up = up.parent
                                if up == null then
                                        break
@@ -299,7 +299,9 @@ do
                end
 
                for nclassdef in nclassdefs do
-                       var name = nclassdef.n_qid.n_id.text
+                       var n_qid = nclassdef.n_qid
+                       if n_qid == null then continue
+                       var name = n_qid.n_id.text
                        if nclassdef.n_formaldefs.is_empty and
                           nclassdef.n_classkind isa AConcreteClasskind then
 
@@ -387,9 +389,9 @@ redef class AModule
        private fun deserializer_nclassdef: nullable AStdClassdef
        do
                for nclassdef in n_classdefs do
-                       if nclassdef isa AStdClassdef and nclassdef.n_qid.n_id.text == "Deserializer" then
-                               return nclassdef
-                       end
+                       if not nclassdef isa AStdClassdef then continue
+                       var n_qid = nclassdef.n_qid
+                       if n_qid != null and n_qid.n_id.text == "Deserializer" then return nclassdef
                end
 
                return null
@@ -397,7 +399,11 @@ redef class AModule
 
        private var inits_to_retype = new Array[AMethPropdef]
 
-       redef fun is_serialize do return n_moduledecl != null and n_moduledecl.is_serialize
+       redef fun is_serialize
+       do
+               var n_moduledecl = n_moduledecl
+               return n_moduledecl != null and n_moduledecl.is_serialize
+       end
 end
 
 redef class AStdClassdef