bunch of changes

internal/vm/vm.go

@@ -13,6 +13,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 	"unicode"
 )
 
@@ -201,22 +202,16 @@ func (vm *VM) LastPoppedStackElem() object.Object {
 }
 
 func (vm *VM) Run() error {
+	var n int
 	var ip int
 	var ins code.Instructions
 	var op code.Opcode
 
 	if vm.Debug {
-		log.Printf(
-			"%-25s %-20s\n",
-			fmt.Sprintf(
-				"%04d %s", ip,
-				strings.Split(ins[ip:].String(), "\n")[0][4:],
-			),
-			fmt.Sprintf(
-				"[ip=%02d fp=%02d, sp=%02d]",
-				ip, vm.fp-1, vm.sp,
-			),
-		)
+		start := time.Now()
+		defer func() {
+			log.Printf("%d instructions executed in %s", n, time.Now().Sub(start))
+		}()
 	}
 
 	for vm.frame.ip < len(vm.frame.Instructions())-1 {
@@ -487,6 +482,7 @@ func (vm *VM) Run() error {
 		}
 
 		if vm.Debug {
+			n++
 			log.Printf(
 				"%-25s [ip=%02d fp=%02d, sp=%02d]",
 				"", ip, vm.fp-1, vm.sp,