micro/config/reflect.go
Vasiliy Tolstov 150e8ad698 config: improve and export helper func
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2020-12-19 23:22:05 +03:00

29 lines
699 B
Go

package config
import "reflect"
func IsEmpty(v reflect.Value) bool {
switch v.Kind() {
case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
return v.Len() == 0
case reflect.Bool:
return !v.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return v.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return v.Uint() == 0
case reflect.Float32, reflect.Float64:
return v.Float() == 0
case reflect.Interface, reflect.Ptr:
if v.IsNil() {
return true
}
return IsEmpty(v.Elem())
case reflect.Func:
return v.IsNil()
case reflect.Invalid:
return true
}
return false
}