Cleanup

compiler.rb

@@ -41,7 +41,7 @@ def push(obj)
     $outfile.puts "push #{segment} #{index}"
   elsif obj.class == String
     if obj.is_integer?
-      $outfile.puts "push constant #{obj.to_i}"
+      $outfile.puts "push constant #{obj}"
     elsif is_var(obj.to_sym)
       index,segment=get_index(obj.to_sym)
       $outfile.puts "push #{segment} #{index}"
@@ -148,15 +148,15 @@ def phase_two
             $outfile.puts "call Main.#{parsed_line[1]} #{nargs}"
           else
             if line[1].include? "+"
-              operand=line[1].split("+")
+              operands=line[1].split("+")
               op="add"
             end
             if line[1].include? "-"
-              operand=line[1].split("-")
+              operands=line[1].split("-")
               op="sub"
             end
-            push(operand[0])
-            push(operand[1])
+            push(operands[0])
+            push(operands[1])
             $outfile.puts(op)
           end
         end
@@ -190,10 +190,11 @@ end
 
 if !File.exists? "vmprog"
   Dir.mkdir("vmprog")
-  write_init()
-end
-
   Dir.chdir("vmprog")
+  write_init()
+else
+  Dir.chdir("vmprog")
+end
 
 $outfile=File.new("Main.vm","w")