242   case s::bl => eval_bl(bl, eval_stmt(s, env))

   242   case s::bl => eval_bl(bl, eval_stmt(s, env))

   243 }

   243 }

   244 

   244 

   245 def eval(bl: Block) : Env = eval_bl(bl, Map())

   245 def eval(bl: Block) : Env = eval_bl(bl, Map())

   246 

   246 

   247 @main

   254 @main

   248 def run(file: String) = {

   255 def run(file: String) = {

   249   val contents = os.read(os.pwd / file)

   256   val contents = os.read(os.pwd / file)

   250   println(s"Lex $file: ")

   257   println(s"Lex $file: ")

   251   println(tokenise(contents))

   258   println(tokenise(contents))

   265 }

   272 }

   266 

   273 

   267 /*

   274 /*

   268 println("Loops eval")

   275 println("Loops eval")

   269 val start = System.nanoTime()

   276 val start = System.nanoTime()

   271 val end = System.nanoTime()

   278 val end = System.nanoTime()

   272 println("Time taken in seconds: ")

   279 println("Time taken in seconds: ")

   273 println((end - start)/(1.0e9))

   280 println((end - start)/(1.0e9))

   274 */

   281 */