optimizations

cmd/monkey/main.go

@@ -3,6 +3,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"monkey"
 	"os"
 )
@@ -24,6 +25,7 @@ func main() {
 	flag.Parse()
 
 	opts := &monkey.Options{
+		Args:  flag.Args(),
 		Debug: debug,
 		Trace: trace,
 	}
@@ -37,12 +39,15 @@ func main() {
 
 	case flag.NArg() > 0:
 		opts.Args = flag.Args()[1:]
-		monkey.ExecFile(flag.Arg(0), opts)
+		if err := monkey.ExecFile(flag.Arg(0), opts); err != nil {
+			fmt.Fprintf(os.Stderr, "runtime error: %v\n", err)
+			os.Exit(1)
+		}
 
 	case simple:
-		monkey.SimpleREPL(flag.Args(), opts)
+		monkey.SimpleREPL(opts)
 
 	default:
-		monkey.REPL(flag.Args(), opts)
+		monkey.REPL(opts)
 	}
 }