phase one, assignment for constants (moves) work

lib/vm/block.rb

@@ -101,10 +101,11 @@ module Vm
     def method_missing(meth, *args, &block)
       if( meth.to_s[-1] == "=" && args.length == 1)
         l_val = @scope.eval  meth.to_s[0 ... -1]
-        add_code l_val.asign(args[0])
-      end
+        add_code l_val.assign(args[0])
+      else
         add_code CMachine.instance.send(meth , *args)
       end
+    end
 
   end
 

lib/vm/values.rb

@@ -70,6 +70,19 @@ module Vm
 
   class Integer < Word
 
+    # part of the dsl. 
+    # Gets called with either fixnum/IntegerConstant or an Instruction (usually logic, iw add...)
+    # For instructions we flip, ie call the assign on the instruction
+    # but for constants we have to create instruction first (mov)
+    def assign other
+      other = Vm::IntegerConstant.new(other) if other.is_a? Fixnum
+      if other.is_a? Vm::IntegerConstant
+        class_for(MoveInstruction).new( self , other , :opcode => :mov)
+      else 
+        other.assign(self)
+      end
+    end
+
     def less_or_equal block , right
       CMachine.instance.integer_less_or_equal block , self , right
     end

test/arm/test_small_program.rb

@@ -17,7 +17,7 @@ class TestSmallProg < MiniTest::Test
     m = @program.main.scope binding
     r0 = Vm::Integer.new(0)
     m.r0 = 5                #1
-    m.add_code start
+    m << start
     start.instance_eval do
       sub  :r0, :r0, 1 , :update_status => 1      #2
       bne  start          #3