make generator fail if a field cannot be handled

Author: francoispqt

gojay/codegen/struct.go

@@ -194,7 +194,8 @@ func (s *Struct) generateFieldDecoding(fields []*toolbox.FieldInfo) (string, []s
 			} else if _, k, ok := s.typedFieldDecode(field, field.Type); ok {
 				templateKey = k
 			} else {
-				templateKey = decodeUnknown
+				// templateKey = decodeUnknown
+				return "", nil, fmt.Errorf("Unknown type %s for field %s", field.Type, field.Name)
 			}
 		}
 		if templateKey != -1 {
@@ -280,7 +281,8 @@ func (s *Struct) generateFieldEncoding(fields []*toolbox.FieldInfo) ([]string, e
 			} else if _, k, ok := s.typedFieldEncode(field, field.Type); ok {
 				templateKey = k
 			} else {
-				templateKey = encodeUnknown
+				// templateKey = decodeUnknown
+				return "", nil, fmt.Errorf("Unknown type %s for field %s", field.Type, field.Name)
 			}
 		}
 		if templateKey != -1 {

gojay/codegen/template.go

@@ -116,15 +116,11 @@ var fieldTemplate = map[int]string{
         enc.SQLNull{{.NullType}}Key{{.OmitEmpty}}("{{.Key}}", {{.PointerModifier}}{{.Accessor}})
     }{{else}}    enc.SQLNull{{.NullType}}Key{{.OmitEmpty}}("{{.Key}}", {{.PointerModifier}}{{.Accessor}}){{end}}`,
 	decodeUnknown: `		case "{{.Key}}":
-			//TODO
-			//dec.Any({{.Accessor}})
-			return nil
-`,
-	encodeUnknown: `
-			//TODO
-			//enc.Any({{.Accessor}})
-
+			return dec.Any({{.PointerModifier}}{{.Accessor}})
 `,
+	encodeUnknown: `{{if .IsPointer}}    if {{.Accessor}} != nil {	
+		enc.Any({{.Accessor}})
+	}{{else}}enc.Any({{.Accessor}}){{end}}`,
 	resetFieldValue: `{{if .ResetDependency}}{{.ResetDependency}}
 {{end}}    {{.Mutator}} = {{.Reset}}`,
 	poolInstanceRelease: `	{{.PoolName}}.Put({{.Accessor}})`,