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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "reflect" | ||
|
|
||
| lua "github.com/yuin/gopher-lua" | ||
| ) | ||
|
|
||
| func registerStrucAsLuaMetaTable[T any]( | ||
| luaState *lua.LState, | ||
| checkStruct func(luaState *lua.LState) *T, | ||
| structType T, | ||
| metaTableName string, | ||
| ) { | ||
| metaTable := luaState.NewTypeMetatable(metaTableName) | ||
|
|
||
| luaState.SetGlobal(metaTableName, metaTable) | ||
|
|
||
| luaState.SetField( | ||
| metaTable, | ||
| "new", | ||
| luaState.NewFunction( | ||
| newStructFunctionFactory(structType, metaTableName), | ||
| ), | ||
| ) | ||
|
|
||
| var zero [0]T | ||
|
|
||
| luaState.SetField( | ||
| metaTable, | ||
| "__index", | ||
| luaState.SetFuncs( | ||
| luaState.NewTable(), | ||
| luaTableGenFactory(reflect.TypeOf(zero), | ||
| checkStruct, | ||
| ), | ||
| ), | ||
| ) | ||
| } | ||
|
|
||
| func newStructFunctionFactory[T any](structType T, metaTableName string) func(*lua.LState) int { | ||
| return func(luaState *lua.LState) int { | ||
| structInstance := &structType | ||
| ud := luaState.NewUserData() | ||
| ud.Value = structInstance | ||
| luaState.SetMetatable(ud, luaState.GetTypeMetatable(metaTableName)) | ||
| luaState.Push(ud) | ||
|
|
||
| return 1 | ||
| } | ||
| } | ||
|
|
||
| func checkStruct[T any](luaState *lua.LState) *T { | ||
| userData := luaState.CheckUserData(1) | ||
| if v, ok := userData.Value.(*T); ok { | ||
| return v | ||
| } | ||
|
|
||
| luaState.ArgError(1, "got wrong struct") | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func getterSetterFactory[T any]( | ||
| fieldName string, | ||
| fieldType reflect.Type, | ||
| checkStruct func(luaState *lua.LState) *T, | ||
| ) func(*lua.LState) int { | ||
| return func(luaState *lua.LState) int { | ||
| genericStruct := checkStruct(luaState) | ||
|
|
||
| structValue := reflect.ValueOf(genericStruct).Elem() | ||
|
|
||
| fieldValue := structValue.FieldByName(fieldName) | ||
|
|
||
| if luaState.GetTop() == 2 { //nolint: mnd,gomnd | ||
| switch fieldType.Kind() { | ||
| case reflect.String: | ||
| fieldValue.SetString(luaState.CheckString(2)) //nolint: mnd,gomnd | ||
| case reflect.Float64: | ||
| fieldValue.SetFloat(float64(luaState.CheckNumber(2))) //nolint: mnd,gomnd | ||
| case reflect.Float32: | ||
| fieldValue.SetFloat(float64(luaState.CheckNumber(2))) //nolint: mnd,gomnd | ||
| case reflect.Int8: | ||
| fieldValue.SetInt(int64(luaState.CheckInt(2))) //nolint: mnd,gomnd | ||
| case reflect.Int16: | ||
| fieldValue.SetInt(int64(luaState.CheckInt(2))) //nolint: mnd,gomnd | ||
| case reflect.Int: | ||
| fieldValue.SetInt(int64(luaState.CheckInt(2))) //nolint: mnd,gomnd | ||
| case reflect.Int32: | ||
| fieldValue.SetInt(int64(luaState.CheckInt(2))) //nolint: mnd,gomnd | ||
| case reflect.Int64: | ||
| fieldValue.SetInt(int64(luaState.CheckInt(2))) //nolint: mnd,gomnd | ||
| case reflect.Bool: | ||
| fieldValue.SetBool(luaState.CheckBool(2)) //nolint: mnd,gomnd | ||
| default: | ||
| log.Print("unsupported type") | ||
| } | ||
|
|
||
| return 0 | ||
| } | ||
|
|
||
| switch fieldType.Kind() { | ||
| case reflect.String: | ||
| luaState.Push(lua.LString(fieldValue.Interface().(string))) | ||
| case reflect.Float64: | ||
| luaState.Push(lua.LNumber(fieldValue.Interface().(float64))) | ||
| case reflect.Float32: | ||
| luaState.Push(lua.LNumber(fieldValue.Float())) | ||
| case reflect.Int8: | ||
| luaState.Push(lua.LNumber(fieldValue.Int())) | ||
| case reflect.Int16: | ||
| luaState.Push(lua.LNumber(fieldValue.Int())) | ||
| case reflect.Int: | ||
| luaState.Push(lua.LNumber(fieldValue.Int())) | ||
| case reflect.Int32: | ||
| luaState.Push(lua.LNumber(fieldValue.Int())) | ||
| case reflect.Int64: | ||
| luaState.Push(lua.LNumber(fieldValue.Int())) | ||
| case reflect.Bool: | ||
| luaState.Push(lua.LBool(fieldValue.Bool())) | ||
| default: | ||
| log.Print("unsupported type") | ||
| } | ||
|
|
||
| return 1 | ||
| } | ||
| } | ||
|
|
||
| func luaTableGenFactory[T any]( | ||
| structType reflect.Type, | ||
| checkStructType func(luaState *lua.LState) *T) map[string]lua.LGFunction { | ||
| tableMethods := make(map[string]lua.LGFunction) | ||
|
|
||
| for _, field := range reflect.VisibleFields(structType) { | ||
| tableMethods[field.Name] = getterSetterFactory(field.Name, field.Type, checkStructType) | ||
| } | ||
|
|
||
| return tableMethods | ||
| } | ||
|
|
||
| func RegisterCustomLuaTypes(luaState *lua.LState) { | ||
| registerStrucAsLuaMetaTable(luaState, checkStruct, TomlConfig{}, "toml_config") | ||
| registerStrucAsLuaMetaTable(luaState, checkStruct, CustomCommand{}, "custom_command") | ||
| } | ||
|
|
||
| func returnAllPlugins(pluginPath string) ([]string, error) { | ||
| pluginList := make([]string, 0) | ||
|
|
||
| files, err := os.ReadDir(pluginPath) | ||
| if err != nil { | ||
| return pluginList, fmt.Errorf("Error reading plugins directory: %v", err) | ||
| } | ||
|
|
||
| for _, file := range files { | ||
| pluginList = append(pluginList, file.Name()) | ||
| } | ||
|
|
||
| return pluginList, nil | ||
| } | ||
|
|
||
| func LoadAllPlugins(appConfig *TomlConfig) { | ||
| luaState := lua.NewState() | ||
| defer luaState.Close() | ||
|
|
||
| RegisterCustomLuaTypes(luaState) | ||
|
|
||
| allPlugins, err := returnAllPlugins(appConfig.PluginPath) | ||
| if err != nil { | ||
| luaState.Close() | ||
|
|
||
| log.Fatal(err) //nolint: gocritic | ||
| } | ||
|
|
||
| log.Println(allPlugins) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| lua "github.com/yuin/gopher-lua" | ||
| ) | ||
|
|
||
| func MetaTableTest(t *testing.T) { | ||
| luaState := lua.NewState() | ||
| defer luaState.Close() | ||
|
|
||
| RegisterCustomLuaTypes(luaState) | ||
|
|
||
| if err := luaState.DoString(` | ||
| config = toml_config.new() | ||
| print(config:IrcServer()) | ||
| config:TrcServer("irc.freenode.net") | ||
| print(config:IrcServer()) | ||
| `); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| } |