// Copy matching Lua table entries to a struct, given the struct type
// and the index on the Lua stack.
func CopyTableToStruct(L *lua.State, t reflect.Type, idx int) interface{} {
was_ptr := t.Kind() == reflect.Ptr
if was_ptr {
t = t.Elem()
}
s := reflect.New(t) // T -> *T
ref := s.Elem()
L.PushNil()
if idx < 0 {
idx--
}
for L.Next(idx) != 0 {
key := L.ToString(-2)
f := ref.FieldByName(strings.Title(key))
if f.IsValid() {
val := luaToGoValue(L, f.Type(), -1)
f.Set(val)
}
L.Pop(1)
}
if was_ptr {
return s.Interface()
}
return s.Elem().Interface()
}
// Also for arrays.
func copySliceToTable(L *lua.State, vslice reflect.Value, visited visitor) int {
ref := vslice
for vslice.Kind() == reflect.Ptr {
// For arrays.
vslice = vslice.Elem()
}
if vslice.IsValid() && (vslice.Kind() == reflect.Slice || vslice.Kind() == reflect.Array) {
n := vslice.Len()
L.CreateTable(n, 0)
if vslice.Kind() == reflect.Slice {
visited.mark(vslice)
} else if ref.Kind() == reflect.Ptr {
visited.mark(ref)
}
for i := 0; i < n; i++ {
L.PushInteger(int64(i + 1))
v := vslice.Index(i)
if isNil(v) {
v = nullv
}
goToLua(L, nil, v, true, visited)
L.SetTable(-3)
}
return 1
}
L.PushNil()
L.PushString("not a slice/array")
return 2
}
func popMap(L *lua.State) map[string]interface{} {
m := make(map[string]interface{})
L.PushNil()
for L.Next(-2) != 0 {
if L.IsString(-2) {
var v interface{}
if L.IsBoolean(-1) {
v = L.ToBoolean(-1)
} else if L.IsNumber(-1) {
var t float64
t = L.ToNumber(-1)
if t == float64(int64(t)) {
v = int(t)
} else {
v = t
}
} else if L.IsString(-1) {
v = L.ToString(-1)
} else if L.IsNil(-1) {
v = nil
} else if L.IsTable(-1) {
v = popMap(L)
}
m[L.ToString(-2)] = v
}
L.Pop(1)
}
return m
}
func pushMap(L *lua.State, m map[string]interface{}, lower bool) {
L.CreateTable(0, len(m))
for k, v := range m {
if lower {
L.PushString(strings.ToLower(k))
} else {
L.PushString(k)
}
switch t := v.(type) {
case string:
L.PushString(t)
case int64:
L.PushInteger(t)
case int:
L.PushInteger(int64(t))
case float64:
L.PushNumber(t)
case bool:
L.PushBoolean(t)
case map[string]interface{}:
pushMap(L, t, false)
default:
L.PushNil()
}
L.SetTable(-3)
}
}
func copyStructToTable(L *lua.State, vstruct reflect.Value, visited visitor) int {
// If 'vstruct' is a pointer to struct, use the pointer to mark as visited.
ref := vstruct
for vstruct.Kind() == reflect.Ptr {
vstruct = vstruct.Elem()
}
if vstruct.IsValid() && vstruct.Type().Kind() == reflect.Struct {
n := vstruct.NumField()
L.CreateTable(n, 0)
if ref.Kind() == reflect.Ptr {
visited.mark(ref)
}
for i := 0; i < n; i++ {
st := vstruct.Type()
field := st.Field(i)
key := field.Name
tag := field.Tag.Get("lua")
if tag != "" {
key = tag
}
goToLua(L, nil, reflect.ValueOf(key), true, visited)
v := vstruct.Field(i)
goToLua(L, nil, v, true, visited)
L.SetTable(-3)
}
return 1
}
L.PushNil()
L.PushString("not a struct")
return 2
}
func copyTableToMap(L *lua.State, t reflect.Type, idx int, visited map[uintptr]interface{}) interface{} {
if t == nil {
t = tmap
}
te, tk := t.Elem(), t.Key()
m := reflect.MakeMap(t)
// See copyTableToSlice.
ptr := L.ToPointer(idx)
if !luaIsEmpty(L, idx) {
visited[ptr] = m.Interface()
}
L.PushNil()
if idx < 0 {
idx--
}
for L.Next(idx) != 0 {
// key at -2, value at -1
key := reflect.ValueOf(luaToGo(L, tk, -2, visited))
val := reflect.ValueOf(luaToGo(L, te, -1, visited))
if val.Interface() == nullv.Interface() {
val = reflect.Zero(te)
}
m.SetMapIndex(key, val)
L.Pop(1)
}
return m.Interface()
}
func outputNumbersToStrings(L *lua.State) {
L.GetGlobal("output")
if !L.IsTable(-1) {
L.NewTable()
L.SetGlobal("output")
}
L.GetField(-1, "tags")
if L.IsTable(-1) {
// First key.
L.PushNil()
for L.Next(-2) != 0 {
// Use 'key' at index -2 and 'value' at index -1.
if L.IsString(-2) && L.IsString(-1) {
// Convert numbers to strings.
L.ToString(-1)
L.SetField(-3, L.ToString(-2))
} else {
// Remove 'value' and keep 'key' for next iteration.
L.Pop(1)
}
}
}
L.Pop(1)
L.Pop(1)
}
func proxyType(L *lua.State) int {
v := unwrapProxy(L, 1)
if v != nil {
GoToLua(L, nil, valueOf(reflect.TypeOf(v)), false)
} else {
L.PushNil()
}
return 1
}
func pairsAux(L *lua.State) int {
L.CheckType(1, lua.LUA_TTABLE)
L.SetTop(2) // Create a 2nd argument if there isn't one.
if L.Next(1) != 0 {
return 2
}
L.PushNil()
return 1
}
// Unproxify converts a proxy to an unproxified Lua value.
//
// Argument: proxy
//
// Returns: value (Lua value)
func Unproxify(L *lua.State) int {
if !isValueProxy(L, 1) {
L.PushNil()
return 1
}
v, _ := valueOfProxy(L, 1)
GoToLua(L, nil, v, true)
return 1
}
// ProxyMethod pushes the proxy method on the stack.
//
// Argument: proxy
//
// Returns: method (function)
func ProxyMethod(L *lua.State) int {
if !isValueProxy(L, 1) {
L.PushNil()
return 1
}
v, _ := valueOfProxy(L, 1)
name := L.ToString(2)
pushGoMethod(L, name, v)
return 1
}
func luaIsEmpty(L *lua.State, idx int) bool {
L.PushNil()
if idx < 0 {
idx--
}
if L.Next(idx) != 0 {
L.Pop(2)
return false
}
return true
}
// ProxyRaw unproxifies a value.
//
// WARNING: Deprecated, use luar.unproxify instead.
func ProxyRaw(L *lua.State) int {
v := mustUnwrapProxy(L, 1)
val := reflect.ValueOf(v)
tp := predeclaredScalarType(val.Type())
if tp != nil {
val = val.Convert(tp)
GoToLua(L, nil, val, false)
} else {
L.PushNil()
}
return 1
}
func copyTableToStruct(L *lua.State, t reflect.Type, idx int, visited map[uintptr]interface{}) interface{} {
if t == nil {
RaiseError(L, "type argument must be non-nill")
}
wasPtr := t.Kind() == reflect.Ptr
if wasPtr {
t = t.Elem()
}
s := reflect.New(t) // T -> *T
ref := s.Elem()
// See copyTableToSlice.
ptr := L.ToPointer(idx)
if !luaIsEmpty(L, idx) {
if wasPtr {
visited[ptr] = s.Interface()
} else {
visited[ptr] = s.Elem().Interface()
}
}
// Associate Lua keys with Go fields: tags have priority over matching field
// name.
fields := map[string]string{}
st := ref.Type()
for i := 0; i < ref.NumField(); i++ {
field := st.Field(i)
tag := field.Tag.Get("lua")
if tag != "" {
fields[tag] = field.Name
continue
}
fields[field.Name] = field.Name
}
L.PushNil()
if idx < 0 {
idx--
}
for L.Next(idx) != 0 {
key := L.ToString(-2)
f := ref.FieldByName(fields[key])
if f.CanSet() && f.IsValid() {
val := reflect.ValueOf(luaToGo(L, f.Type(), -1, visited))
f.Set(val)
}
L.Pop(1)
}
if wasPtr {
return s.Interface()
}
return s.Elem().Interface()
}
// ProxyType pushes the proxy type on the stack.
//
// Argument: proxy
//
// Returns: type (string)
func ProxyType(L *lua.State) int {
if !isValueProxy(L, 1) {
L.PushNil()
return 1
}
v, _ := valueOfProxy(L, 1)
if v.Interface() == nil {
L.PushNil()
return 1
}
GoToLua(L, nil, reflect.ValueOf(v.Type()), false)
return 1
}
func proxyRaw(L *lua.State) int {
v := unwrapProxyOrComplain(L, 1)
t := reflect.TypeOf(v)
tp := isPrimitiveDerived(t, t.Kind())
if tp != nil {
val := valueOf(v)
val = val.Convert(tp)
GoToLua(L, nil, val, false)
} else {
L.PushNil()
}
return 1
}
// ProxyPairs implements Lua 5.2 'pairs' functions.
// It respects the __pairs metamethod.
//
// It is only useful for compatibility with Lua 5.1.
func ProxyPairs(L *lua.State) int {
// See Lua >=5.2 source code.
if L.GetMetaField(1, "__pairs") {
L.PushValue(1)
L.Call(1, 3)
return 3
}
L.CheckType(1, lua.LUA_TTABLE)
L.PushGoFunction(pairsAux)
L.PushValue(1)
L.PushNil()
return 3
}
// copy a Go slice to a Lua table
func CopySliceToTable(L *lua.State, vslice reflect.Value) int {
if vslice.IsValid() && vslice.Type().Kind() == reflect.Slice {
n := vslice.Len()
L.CreateTable(n, 0)
for i := 0; i < n; i++ {
L.PushInteger(int64(i + 1))
GoToLua(L, nil, vslice.Index(i))
L.SetTable(-3)
}
return 1
} else {
L.PushNil()
L.PushString("not a slice!")
}
return 2
}
// copy a Go map to a Lua table
func CopyMapToTable(L *lua.State, vmap reflect.Value) int {
if vmap.IsValid() && vmap.Type().Kind() == reflect.Map {
n := vmap.Len()
L.CreateTable(0, n)
for _, key := range vmap.MapKeys() {
val := vmap.MapIndex(key)
GoToLua(L, nil, key)
GoToLua(L, nil, val)
L.SetTable(-3)
}
return 1
} else {
L.PushNil()
L.PushString("not a map!")
}
return 2
}
func slice__ipairs(L *lua.State) int {
s, _ := valueOfProxy(L, 1)
n := s.Len()
idx := -1
iter := func(L *lua.State) int {
idx++
if idx == n {
L.PushNil()
return 1
}
GoToLua(L, nil, valueOf(idx+1), false) // report as 1-based index
val := s.Index(idx)
GoToLua(L, nil, val, false)
return 2
}
L.PushGoFunction(iter)
return 1
}
func map__pairs(L *lua.State) int {
m, _ := valueOfProxy(L, 1)
keys := m.MapKeys()
idx := -1
n := m.Len()
iter := func(L *lua.State) int {
idx++
if idx == n {
L.PushNil()
return 1
}
GoToLua(L, nil, keys[idx], false)
val := m.MapIndex(keys[idx])
GoToLua(L, nil, val, false)
return 2
}
L.PushGoFunction(iter)
return 1
}
// return the Lua table at 'idx' as a copied Go map. If 't' is nil then the map
// type is map[string]interface{}
func CopyTableToMap(L *lua.State, t reflect.Type, idx int) interface{} {
if t == nil {
t = reflect.TypeOf(tmap)
}
te, tk := t.Elem(), t.Key()
m := reflect.MakeMap(t)
L.PushNil()
if idx < 0 {
idx--
}
for L.Next(idx) != 0 {
// key at -2, value at -1
key := valueOf(LuaToGo(L, tk, -2))
val := valueOf(LuaToGo(L, te, -1))
m.SetMapIndex(key, val)
L.Pop(1)
}
return m.Interface()
}
func copyMapToTable(L *lua.State, vmap reflect.Value, visited visitor) int {
if vmap.IsValid() && vmap.Type().Kind() == reflect.Map {
n := vmap.Len()
L.CreateTable(0, n)
visited.mark(vmap)
for _, key := range vmap.MapKeys() {
v := vmap.MapIndex(key)
goToLua(L, nil, key, false, visited)
if isNil(v) {
v = nullv
}
goToLua(L, nil, v, true, visited)
L.SetTable(-3)
}
return 1
}
L.PushNil()
L.PushString("not a map!")
return 2
}
// Copy matching Lua table entries to a struct, given the struct type
// and the index on the Lua stack.
func CopyTableToStruct(L *lua.State, t reflect.Type, idx int) interface{} {
was_ptr := t.Kind() == reflect.Ptr
if was_ptr {
t = t.Elem()
}
s := reflect.New(t) // T -> *T
ref := s.Elem()
// Associate Lua keys with Go fields: tags have priority over matching field
// name.
fields := map[string]string{}
st := ref.Type()
for i := 0; i < ref.NumField(); i++ {
field := st.Field(i)
tag := field.Tag.Get("lua")
if tag != "" {
fields[tag] = field.Name
continue
}
fields[field.Name] = field.Name
}
L.PushNil()
if idx < 0 {
idx--
}
for L.Next(idx) != 0 {
key := L.ToString(-2)
f := ref.FieldByName(fields[key])
if f.CanSet() && f.IsValid() {
val := luaToGoValue(L, f.Type(), -1)
f.Set(val)
}
L.Pop(1)
}
if was_ptr {
return s.Interface()
}
return s.Elem().Interface()
}
// Return the Lua table at 'idx' as a copied Go map. If 't' is nil then the map
// type is map[string]interface{}
func CopyTableToMap(L *lua.State, t reflect.Type, idx int) interface{} {
if t == nil {
t = tmap
}
te, tk := t.Elem(), t.Key()
m := reflect.MakeMap(t)
L.PushNil()
if idx < 0 {
idx--
}
for L.Next(idx) != 0 {
// key at -2, value at -1
key := luaToGoValue(L, tk, -2)
val := luaToGoValue(L, te, -1)
if val == nullv {
val = reflect.Zero(te)
}
m.SetMapIndex(key, val)
L.Pop(1)
}
return m.Interface()
}
// Copy a Go struct to a Lua table. nils in both slices and structs
// are represented as luar.null. Defines luar.struct2table
// Use tags to set field names.
func CopyStructToTable(L *lua.State, vstruct reflect.Value) int {
if vstruct.IsValid() && vstruct.Type().Kind() == reflect.Struct {
n := vstruct.NumField()
L.CreateTable(n, 0)
for i := 0; i < n; i++ {
st := vstruct.Type()
field := st.Field(i)
key := field.Name
tag := field.Tag.Get("lua")
if tag != "" {
key = tag
}
GoToLua(L, nil, reflect.ValueOf(key), true)
v := vstruct.Field(i)
GoToLua(L, nil, v, true)
L.SetTable(-3)
}
return 1
} else {
L.PushNil()
L.PushString("not a struct!")
}
return 2
}
// Push a Go value 'val' of type 't' on the Lua stack.
// If we haven't been given a concrete type, use the type of the value
// and unbox any interfaces. You can force slices and maps to be copied
// over as tables by setting 'dontproxify' to true.
func GoToLua(L *lua.State, t reflect.Type, val reflect.Value, dontproxify bool) {
if !val.IsValid() {
L.PushNil()
return
}
if t == nil {
t = val.Type()
}
if t.Kind() == reflect.Interface && !val.IsNil() { // unbox interfaces!
val = valueOf(val.Interface())
t = val.Type()
}
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
kind := t.Kind()
// underlying type is 'primitive' ? wrap it as a proxy!
if isPrimitiveDerived(t, kind) != nil {
makeValueProxy(L, val, cINTERFACE_META)
return
}
switch kind {
case reflect.Float64, reflect.Float32:
{
L.PushNumber(val.Float())
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
{
L.PushNumber(float64(val.Int()))
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
{
L.PushNumber(float64(val.Uint()))
}
case reflect.String:
{
L.PushString(val.String())
}
case reflect.Bool:
{
L.PushBoolean(val.Bool())
}
case reflect.Slice:
{
if !dontproxify {
makeValueProxy(L, val, cSLICE_META)
} else {
CopySliceToTable(L, val)
}
}
case reflect.Map:
{
if !dontproxify {
makeValueProxy(L, val, cMAP_META)
} else {
CopyMapToTable(L, val)
}
}
case reflect.Struct:
{
if v, ok := val.Interface().(error); ok {
L.PushString(v.Error())
} else if v, ok := val.Interface().(*LuaObject); ok {
v.Push()
} else {
if (val.Kind() == reflect.Ptr || val.Kind() == reflect.Interface) && !val.Elem().IsValid() {
L.PushNil()
return
}
makeValueProxy(L, val, cSTRUCT_META)
}
}
default:
{
if v, ok := val.Interface().(error); ok {
L.PushString(v.Error())
} else if val.IsNil() {
L.PushNil()
} else {
makeValueProxy(L, val, cINTERFACE_META)
}
}
}
}
func pushValue(state *lua.State, value interface{}) error {
switch v := value.(type) {
default:
return fmt.Errorf("An item of unknown type was included in the environment or arguments of a Lua call (skipping it): %v",
value)
case nil:
log.Println("Pushing nil onto lua stack")
state.PushNil()
case string:
log.Println("Pushing string onto lua stack")
state.PushString(v)
case int:
log.Println("Pushing int onto lua stack")
state.PushInteger(int64(v))
case int64:
log.Println("Pushing int64 onto lua stack")
state.PushInteger(v)
case float64:
log.Println("Pushing float64 onto lua stack")
state.PushNumber(v)
case bool:
log.Println("Pushing bool onto lua stack")
state.PushBoolean(v)
case map[string]interface{}:
log.Println("Pushing map[string]interface{} onto lua stack")
state.CreateTable(0, len(v))
for name, value := range v {
err := pushValue(state, value)
if err != nil {
// error means nothing was added to stack. So pop our new table so *we* leave nothing added to the stack.
state.Pop(1)
return err
}
state.SetField(-2, name)
}
// then leave the table on the stack
case ThingType:
// These are singleton sentinel values, so load them from Lua-land.
state.GetGlobal("world")
state.GetField(-1, strings.Title(v.String()))
state.Remove(-2)
case *Thing:
log.Println("Pushing *Thing onto lua stack")
return pushValue(state, v.Id)
case ThingId:
log.Println("Pushing ThingId onto lua stack")
// We're pushing a ThingId, so make a new userdata for it, with the Thing metatable.
userdata := state.NewUserdata(uintptr(unsafe.Sizeof(int64(0))))
thingPtr := (*int64)(userdata)
*thingPtr = int64(v)
if !state.IsUserdata(-1) {
log.Println("!!! HOGAD JUST PUSHED NEW USERDATA BUT IT ISN'T OMG !!!")
}
log.Println("Pushed ThingId", *thingPtr, "onto lua stack")
// Now make it act like a Thing.
state.LGetMetaTable(ThingMetaTableName) // ( udata -- udata mtbl )
state.SetMetaTable(-2) // ( udata mtbl -- udata )
// Let's just check that it's that, for sures.
if !state.IsUserdata(-1) {
log.Println("!!! WOOP WOOP DID NOT SET METATABLE RIGHT :( !!!")
}
}
return nil
}
// TODO: Check if we really need multiple pointer levels since pointer methods
// can be called on non-pointers.
func goToLua(L *lua.State, t reflect.Type, val reflect.Value, dontproxify bool, visited visitor) {
if !val.IsValid() {
L.PushNil()
return
}
// Unbox interface.
if val.Kind() == reflect.Interface && !val.IsNil() {
val = reflect.ValueOf(val.Interface())
}
// Follow pointers if not proxifying. We save the original pointer Value in case we proxify.
ptrVal := val
for val.Kind() == reflect.Ptr {
val = val.Elem()
}
if !val.IsValid() {
L.PushNil()
return
}
// As a special case, we always proxify nullv, the empty element for slices and maps.
if val.CanInterface() && val.Interface() == nullv.Interface() {
makeValueProxy(L, val, cInterfaceMeta)
return
}
switch val.Kind() {
case reflect.Float64, reflect.Float32:
if !dontproxify && predeclaredScalarType(val.Type()) != nil {
makeValueProxy(L, ptrVal, cNumberMeta)
} else {
L.PushNumber(val.Float())
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
if !dontproxify && predeclaredScalarType(val.Type()) != nil {
makeValueProxy(L, ptrVal, cNumberMeta)
} else {
L.PushNumber(float64(val.Int()))
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
if !dontproxify && predeclaredScalarType(val.Type()) != nil {
makeValueProxy(L, ptrVal, cNumberMeta)
} else {
L.PushNumber(float64(val.Uint()))
}
case reflect.String:
if !dontproxify && predeclaredScalarType(val.Type()) != nil {
makeValueProxy(L, ptrVal, cStringMeta)
} else {
L.PushString(val.String())
}
case reflect.Bool:
if !dontproxify && predeclaredScalarType(val.Type()) != nil {
makeValueProxy(L, ptrVal, cInterfaceMeta)
} else {
L.PushBoolean(val.Bool())
}
case reflect.Complex128, reflect.Complex64:
makeValueProxy(L, ptrVal, cComplexMeta)
case reflect.Array:
// It needs be a pointer to be a proxy, otherwise values won't be settable.
if !dontproxify && ptrVal.Kind() == reflect.Ptr {
makeValueProxy(L, ptrVal, cSliceMeta)
} else {
// See the case of struct.
if ptrVal.Kind() == reflect.Ptr && visited.push(ptrVal) {
return
}
copySliceToTable(L, ptrVal, visited)
}
case reflect.Slice:
if !dontproxify {
makeValueProxy(L, ptrVal, cSliceMeta)
} else {
if visited.push(val) {
return
}
copySliceToTable(L, val, visited)
}
case reflect.Map:
if !dontproxify {
makeValueProxy(L, ptrVal, cMapMeta)
} else {
if visited.push(val) {
return
}
copyMapToTable(L, val, visited)
}
case reflect.Struct:
if !dontproxify && ptrVal.Kind() == reflect.Ptr {
if ptrVal.CanInterface() {
switch v := ptrVal.Interface().(type) {
case error:
L.PushString(v.Error())
case *LuaObject:
v.Push()
default:
makeValueProxy(L, ptrVal, cStructMeta)
}
} else {
makeValueProxy(L, ptrVal, cStructMeta)
}
} else {
// Use ptrVal instead of val to detect cycles from the very first element, if a pointer.
if ptrVal.Kind() == reflect.Ptr && visited.push(ptrVal) {
return
}
copyStructToTable(L, ptrVal, visited)
}
case reflect.Chan:
makeValueProxy(L, ptrVal, cChannelMeta)
case reflect.Func:
L.PushGoFunction(goLuaFunc(L, val))
default:
if v, ok := val.Interface().(error); ok {
L.PushString(v.Error())
} else if val.IsNil() {
L.PushNil()
} else {
makeValueProxy(L, ptrVal, cInterfaceMeta)
}
}
}
func register(L *lua.State, table string, values Map, convertFun bool) {
pop := true
if table == "*" {
pop = false
} else if len(table) > 0 {
L.GetGlobal(table)
if L.IsNil(-1) {
L.NewTable()
L.SetGlobal(table)
L.GetGlobal(table)
}
} else {
L.GetGlobal("_G")
}
for name, val := range values {
t := reflect.TypeOf(val)
if t.Kind() == reflect.Func {
if convertFun {
L.PushGoFunction(GoLuaFunc(L, val))
} else {
lf := val.(func(*lua.State) int)
L.PushGoFunction(lf)
}
} else {
GoToLua(L, t, valueOf(val), false)
}
L.SetField(-2, name)
if t.Kind() == reflect.Func {
var lf func(*lua.State) int
if convertFun {
lf = GoLuaFunc(L, val)
} else {
lf = val.(func(*lua.State) int)
}
L.PushGoFunction(func(L *lua.State) (ret int) {
defer func() {
if err2 := recover(); err2 != nil {
GoToLua(L, typeof(err2), valueOf(err2), false)
ret = 1
return
}
}()
ret = lf(L)
pos := L.GetTop() - ret + 1
L.PushNil()
L.Insert(pos)
for i := 0; i < L.GetTop(); i++ {
fmt.Println(L.Typename(int(L.Type(i + 1))))
}
return ret + 1
})
L.SetField(-2, "safe_"+name)
}
}
if pop {
L.Pop(1)
}
}