remove unused methods

and a whole lot more index fixes

lib/risc/boot.rb

@@ -129,7 +129,7 @@ module Risc
        {  Word: {char_length: :Integer} ,
           List: {indexed_length: :Integer} ,
           Message: { next_message: :Message,   receiver: :Object, frame: :NamedList ,
-                     return_address: :Integer, return_value: :Integer,
+                     return_address: :Integer, return_value: :Object,
                      caller: :Message ,        name: :Word ,     arguments: :NamedList },
           Integer: {next_integer: :Integer},
           DataObject: {},

lib/risc/builtin/compile_helper.rb

@@ -4,7 +4,7 @@ module Risc
     module CompileHelper
 
       def compiler_for( type , method_name , arguments , locals = {})
-        frame = Parfait::NamedList.type_for( locals ) #TODO fix locals passing/ using in builtin
+        frame = Parfait::NamedList.type_for( locals )
         args = Parfait::NamedList.type_for( arguments )
         Risc::MethodCompiler.create_method(type , method_name , args, frame )
       end

lib/risc/instructions/getter.rb

@@ -22,7 +22,7 @@ module Risc
       @array = array
       @index = index
       @register = register
-      raise "index 0 " if index == 0
+      raise "index #{index}" if index.is_a?(Numeric) and index < 0
       raise "Not integer or reg #{index}" unless index.is_a?(Numeric) or RiscValue.look_like_reg(index)
       raise "Not register #{register}" unless RiscValue.look_like_reg(register)
       raise "Not register #{array}" unless RiscValue.look_like_reg(array)

lib/risc/instructions/reg_to_slot.rb

@@ -18,14 +18,9 @@ module Risc
   #     (which are precisely the symbols :message or :new_message. or a register)
   # index resolves with resolve_to_index.
   def self.reg_to_slot( source , from_reg , to , index )
-    no_rec = index != :receiver
-    puts "FROM #{from_reg}"
-    puts "TO #{to}"
-    puts "IN #{index}"
     from = resolve_to_register from_reg
     index = resolve_to_index( to , index)
     to = resolve_to_register to
-#    raise "HALLO " if index == 2 and no_rec
     RegToSlot.new( source, from , to , index)
   end