misc

lib/register/instruction.rb

@@ -3,14 +3,14 @@ module Register
   # the register machine has at least 8 registers, named r0-r5 , :lr and :pc (for historical reasons)
   # we can load and store their contents and
   # access (get/set) memory at a constant offset from a register
-  # while the vm works with objects, the register machine has registers, 
+  # while the vm works with objects, the register machine has registers,
   #             but we keep the names for better understanding, r4/5 are temporary/scratch
   # there is no direct memory access, only through registers
   # constants can/must be loaded into registers before use
   class Instruction
 
     # returns an array of registers (RegisterReferences) that this instruction uses.
-    # ie for r1 = r2 + r3 
+    # ie for r1 = r2 + r3
     # which in assembler is add r1 , r2 , r3
     # it would return [r2,r3]
     # for pushes the list may be longer, whereas for a jump empty
@@ -18,7 +18,7 @@ module Register
       raise "abstract called for #{self.class}"
     end
     # returns an array of registers (RegisterReferences) that this instruction assigns to.
-    # ie for r1 = r2 + r3 
+    # ie for r1 = r2 + r3
     # which in assembler is add r1 , r2 , r3
     # it would return [r1]
     # for most instruction this is one, but comparisons and jumps 0 , and pop's as long as 16
@@ -32,7 +32,7 @@ module Register
       RegisterReference.new(reg)
     end
   end
-  
+
 end
 
 require_relative "instructions/set_slot"