diff --git a/lib/parser/basic_types.rb b/lib/parser/basic_types.rb
index d9d754a..33f2b7e 100644
--- a/lib/parser/basic_types.rb
+++ b/lib/parser/basic_types.rb
@@ -39,9 +39,9 @@ module Parser
     rule(:type) { (str("int") | str("ref")).as(:type) >> space }
     # identifier must start with lower case
     # TODO rule forbit names like if_true, because it starts with a keyword. a little looser please!
-    rule(:name)   { keyword.absent? >> (match['a-z_'] >> match['a-zA-Z0-9_'].repeat).as(:name)  >> space? }
+    rule(:name)   { (keyword|type).absent? >> (match['a-z_'] >> match['a-zA-Z0-9_'].repeat).as(:name)  >> space? }
     # fields have type
-    rule(:field) { type >> name }
+    rule(:field) { type >> name >> (assign >> value_expression.as(:value) ).maybe}
     # and class/module names must start with capital
     # (admittatly the rule matches constants too, but one step at a time)
     rule(:module_name) { keyword.absent? >> (match['A-Z'] >> match['a-zA-Z0-9_'].repeat).as(:module_name)  >> space? }
diff --git a/lib/parser/transform.rb b/lib/parser/transform.rb
index 3688ab0..ec4cfab 100644
--- a/lib/parser/transform.rb
+++ b/lib/parser/transform.rb
@@ -15,6 +15,8 @@ module Parser
     rule(:integer => simple(:value)) { s(:int ,value.to_i) }
     rule(:name   => simple(:name))  { s(:name , name.to_sym) }
     rule(:type   => simple(:type), :name   => simple(:name))  { s(:field_def , type.to_sym , name.to_sym) }
+    rule(:type   => simple(:type), :name   => simple(:name) , :value => simple(:value))  {
+      s(:field_def , type.to_sym , name.to_sym , value ) }
 
     rule(:module_name   => simple(:module_name))  { s(:module,module_name.to_s) }
 
diff --git a/test/cases/class_def/class_derived.tst b/test/cases/class_def/class_derived.tst
index 6331f4d..fedd805 100644
--- a/test/cases/class_def/class_derived.tst
+++ b/test/cases/class_def/class_derived.tst
@@ -9,9 +9,7 @@ end
 s(:expressions,
   s(:class, :Foo,
     s(:derives, :Object),
-    s(:name, :int),
-    s(:assign,
-      s(:name, :field),
+    s(:field_def, :int, :field,
       s(:int, 3)),
     s(:function, :int,
       s(:name, :func),
diff --git a/test/cases/class_def/class_ops.tst b/test/cases/class_def/class_ops.tst
index c18c831..afc800a 100644
--- a/test/cases/class_def/class_ops.tst
+++ b/test/cases/class_def/class_ops.tst
@@ -13,9 +13,7 @@ s(:expressions,
       s(:parameters,
         s(:parameter, :int, :x)),
       s(:expressions,
-        s(:name, :int),
-        s(:assign,
-          s(:name, :abba),
+        s(:field_def, :int, :abba,
           s(:int, 5)),
         s(:operator, "+",
           s(:name, :abba),
diff --git a/test/cases/function_definition/function_ops.tst b/test/cases/function_definition/function_ops.tst
index ceab819..15d6b78 100644
--- a/test/cases/function_definition/function_ops.tst
+++ b/test/cases/function_definition/function_ops.tst
@@ -9,9 +9,7 @@ s(:expressions,
     s(:parameters,
       s(:parameter, :int, :x)),
     s(:expressions,
-      s(:name, :int),
-      s(:assign,
-        s(:name, :abba),
+      s(:field_def, :int, :abba,
         s(:int, 5)),
       s(:operator, "+",
         s(:name, :abba),
diff --git a/test/cases/function_definition/function_return.tst b/test/cases/function_definition/function_return.tst
index f4107c0..6481d19 100644
--- a/test/cases/function_definition/function_return.tst
+++ b/test/cases/function_definition/function_return.tst
@@ -9,9 +9,7 @@ s(:expressions,
     s(:parameters,
       s(:parameter, :ref, :n)),
     s(:expressions,
-      s(:name, :int),
-      s(:assign,
-        s(:name, :i),
+      s(:field_def, :int, :i,
         s(:field_access,
           s(:receiver,
             s(:name, :n)),
diff --git a/test/cases/module_def/module_ops.tst b/test/cases/module_def/module_ops.tst
index ea4e4a7..fa79b14 100644
--- a/test/cases/module_def/module_ops.tst
+++ b/test/cases/module_def/module_ops.tst
@@ -1,6 +1,6 @@
 module Opers
   int foo(int x)
-    int abba = x + self.index
+    int abba = self.index
     return abba + 5
   end
 end
@@ -12,16 +12,12 @@ s(:expressions,
       s(:parameters,
         s(:parameter, :int, :x)),
       s(:expressions,
-        s(:name, :int),
-        s(:assign,
-          s(:name, :abba),
-          s(:operator, "+",
-            s(:name, :x),
-            s(:field_access,
-              s(:receiver,
-                s(:name, :self)),
-              s(:field,
-                s(:name, :index))))),
+        s(:field_def, :int, :abba,
+          s(:field_access,
+            s(:receiver,
+              s(:name, :self)),
+            s(:field,
+              s(:name, :index)))),
         s(:return,
           s(:operator, "+",
             s(:name, :abba),
diff --git a/test/cases/root/module_method.tst b/test/cases/root/module_method.tst
index b9bfed2..1e67132 100644
--- a/test/cases/root/module_method.tst
+++ b/test/cases/root/module_method.tst
@@ -15,9 +15,7 @@ s(:expressions,
       s(:parameters,
         s(:parameter, :int, :n)),
       s(:expressions,
-        s(:name, :int),
-        s(:assign,
-          s(:name, :a),
+        s(:field_def, :int, :a,
           s(:int, 0)),
         s(:return,
           s(:name, :a)))),