new field def compiles, fix test

lib/bosl/compiler.rb

@@ -34,13 +34,14 @@ module Bosl
 end
 
 require_relative "compiler/basic_expressions"
-require_relative "compiler/name_expression"
 require_relative "compiler/callsite_expression"
 require_relative "compiler/compound_expressions"
-require_relative "compiler/if_expression"
+require_relative "compiler/expression_list"
+require_relative "compiler/field_def"
 require_relative "compiler/function_expression"
+require_relative "compiler/if_expression"
 require_relative "compiler/module_expression"
+require_relative "compiler/name_expression"
 require_relative "compiler/operator_expressions"
 require_relative "compiler/return_expression"
 require_relative "compiler/while_expression"
-require_relative "compiler/expression_list"

lib/bosl/compiler/field_def.rb

@@ -0,0 +1,16 @@
+module Bosl
+  Compiler.class_eval do
+
+    def on_field_def expression
+      type , name , value = *expression
+      name = name
+      index = method.ensure_local( name )
+
+      if value
+        value = process( value  )
+      end
+
+      Virtual::Return.new( value )
+    end
+  end
+end

lib/bosl/compiler/function_expression.rb

@@ -2,10 +2,11 @@ module Bosl
   Compiler.class_eval do
 #    function attr_reader  :name, :params, :body , :receiver
     def on_function  expression
+#      puts expression.inspect
       return_type , name , parameters, kids = *expression
       name =  name.to_a.first
       args = parameters.to_a.collect do |p|
-        raise "error, argument must be a identifier, not #{p}" unless p.type == :field
+        raise "error, argument must be a identifier, not #{p}" unless p.type == :parameter
         p[2]
       end