renamed

lib/register/integer.rb

@@ -0,0 +1,51 @@
+module Vm
+  class Integer < Word
+    # needs to be here as Word's constructor is private (to make it abstract)
+    def initialize reg
+      super
+    end
+
+    def less_or_equal block , right
+      block.cmp( self ,  right )
+      Vm::BranchCondition.new :le
+    end
+    def greater_or_equal block , right
+      block.cmp( self ,  right )
+      Vm::BranchCondition.new :ge
+    end
+    def greater_than block , right
+      block.cmp( self ,  right )
+      Vm::BranchCondition.new :gt
+    end
+    def less_than block , right
+      block.cmp( self ,  right )
+      Vm::BranchCondition.new :lt
+    end
+    def plus block , first , right
+      block.add( self , left ,  right )
+      self
+    end
+    def minus block , left , right
+      block.sub( self ,  left ,  right )
+      self
+    end
+    def left_shift block , left , right
+      block.mov( self ,  left , shift_lsr: right )
+      self
+    end
+    def equals block , right
+      block.cmp( self ,  right )
+      Vm::BranchCondition.new :eq
+    end
+
+    def is_true? function
+      function.cmp( self ,  0 )
+      Vm::BranchCondition.new :ne
+    end
+
+    def move block , right
+      block.mov(  self ,  right )
+      self
+    end
+  end
+end