程序报错undefined: IniSection

``` package ini import ( "bufio" "bytes" "io" "log" "os" "strings" "sync" ) var ( DEFAULT_SECTION string COMMENT []byte SEPARATOR []byte ) func init() { DEFAULT_SECTION = "default" COMMENT = []byte{'#'} SEPARATOR = []byte{'='} } type IniEntry struct { value interface{} } type IniConfig struct { filename string section map[string]*IniSection sync.RWMutex } func NewIniConfig(path string) *IniConfig { config := &IniConfig{path, make(map[string]*IniSection), sync.RWMutex{}} config.section[DEFAULT_SECTION] = NewIniSection() return config } func (c *IniConfig) Parse() error { file, err := os.Open("D:\\GoPoject\\initype\\src\\ini\\gconfig.ini") if err != nil { return err } c.Lock() defer c.Unlock() defer file.Close() buf := bufio.NewReader(file) section := DEFAULT_SECTION var bufRead int for { line, _, err := buf.ReadLine() bufRead = bufRead + len(line) if err == io.EOF { break } if bytes.Equal(line, []byte("")) { continue } line = bytes.TrimSpace(line) if bytes.HasPrefix(line, COMMENT) { continue } if bytes.HasPrefix(line, []byte("[")) && bytes.HasSuffix(line, []byte("]")) { section = string(line[1 : len(line)-1]) section = strings.ToLower(section) if _, ok := c.section[section]; !ok { c.section[section] = NewIniSection() } } else { pair := bytes.SplitN(line, SEPARATOR, 2) key := pair[0] val := pair[1] if _, ok := c.section[section]; !ok { c.section[section] = NewIniSection() } log.Println(key, val) c.section[section].addEntry(string(key), string(val)) } } return nil } func (c *IniConfig) RemoveSection(key string) error { return nil } func (c *IniConfig) GetString(k string) string { s := strings.Split(k, ":") var sec string var key string if len(s) == 1 { sec = DEFAULT_SECTION key = s[0] log.Println(sec, key) } else { sec = s[0] key = s[1] log.Println(sec, key) } if v, ok := c.section[sec].getEntry(key).(string); ok { return v } return "" } ``` 找的代码 一直报错不知道怎么解决