start conditionals

lib/ast/basic_expressions.rb

@@ -59,9 +59,62 @@ module Ast
     end
   end
 
+  class TypedName < NameExpression
+    attr_reader  :type
+    def initialize type , name
+      super(name)
+      @type = type.to_sym
+    end
+    def attributes
+      [:type, :name]
+    end
+    def inspect
+      "#{self.class.name}.new(#{type.inspect},#{name.inspect})"
+    end
+    def to_s
+      inspect
+    end
+  end
+
+  class VariableDefinition < TypedName
+    attr_reader  :right
+
+    def initialize type , name , right
+      super(type , name)
+      @right = right
+    end
+    def attributes
+      super + [:right]
+    end
+    def inspect
+      self.class.name + ".new(" +  type.inspect + "," + name.inspect + "," + right.inspect + ")"
+    end
+    def to_s
+      inspect
+    end
+  end
+
   class VariableExpression < NameExpression
   end
 
+  class AssignmentExpression < NameExpression
+    attr_reader  :right
+
+    def initialize name, right
+      super(name)
+      @right = right
+    end
+    def attributes
+      super + [:right]
+    end
+    def inspect
+      self.class.name + ".new(" +  name.inspect + "," + right.inspect + ")"
+    end
+    def to_s
+      "#{left} = #{right}"
+    end
+  end
+
   class ModuleName < NameExpression
   end
 

lib/ast/operator_expressions.rb

@@ -1,5 +1,5 @@
 module Ast
-    
+
   class OperatorExpression < Expression
     attr_reader  :operator, :left, :right
 
@@ -10,28 +10,11 @@ module Ast
       [:operator, :left, :right]
     end
     def inspect
-      self.class.name + ".new(" + operator.inspect + ", " +  left.inspect + "," + right.inspect + ")"  
+      self.class.name + ".new(" + operator.inspect + ", " +  left.inspect + "," + right.inspect + ")"
     end
     def to_s
       "#{left} #{operator} #{right}"
     end
   end
 
-  class AssignmentExpression < Expression
-    attr_reader  :left, :right
-
-    def initialize left, right
-      @left, @right = left, right
-    end
-    def attributes
-      [:left, :right]
-    end
-    def inspect
-      self.class.name + ".new(" +  left.inspect + "," + right.inspect + ")"  
-    end
-    def to_s
-      "#{left} = #{right}"
-    end
-  end
-
 end