rename left to first in instruction and started on logic instruction cleanup

lib/vm/c_machine.rb

@@ -81,11 +81,11 @@ module Vm
     # defaults gets merged into the instructions options hash, ie passed on to the (machine specific)
     # Instruction constructor and as such can be used to influence that classes behaviour
     def define_instruction(inst , clazz , defaults = {} )
-      create_method(inst) do |left , options|
+      create_method(inst) do |first , options|
         options = {} if options == nil
         options.merge defaults
         options[:opcode] = inst
-        clazz.new(left , options)
+        clazz.new(first , options)
       end
     end
 

lib/vm/instruction.rb

@@ -25,8 +25,8 @@ module Vm
     # Make hash attributes to object attributes
     include Support::HashAttributes
     
-    def initialize left , options
-      @left = left
+    def initialize first , options
+      @first = first
       @attributes = options
     end
   end
@@ -44,7 +44,7 @@ module Vm
   class MoveInstruction < Instruction
   end
   class CallInstruction < Instruction
-    def initialize left , options
+    def initialize first , options
       super
       opcode = @attributes[:opcode].to_s
       if opcode.length == 3 and opcode[0] == "b"

lib/vm/values.rb

@@ -63,11 +63,11 @@ module Vm
       CMachine.instance.integer_less_or_equal block , self , right
     end
 
-    def plus block , left , right
-      CMachine.instance.integer_plus block , self , left , right
+    def plus block , first , right
+      CMachine.instance.integer_plus block , self , first , right
     end
-    def minus block , left , right
-      CMachine.instance.integer_minus block , self , left , right
+    def minus block , first , right
+      CMachine.instance.integer_minus block , self , first , right
     end
     
     def load block , right