tweak: implement amount of parameters

Author: kanersps

models/object/function.go

@@ -15,8 +15,9 @@ func (f *Function) Type() string    { return FUNCTION }
 func (f *Function) Inspect() string { return "function" }
 
 type CompiledFunction struct {
-	Instructions []byte
-	NumLocals    int
+	Instructions  []byte
+	NumLocals     int
+	NumParameters int
 }
 
 func (cf *CompiledFunction) Type() string    { return COMPILED_FUNCTION }