/
reflect.go
80 lines (73 loc) · 1.78 KB
/
reflect.go
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package mptt
import (
"reflect"
)
var (
nullableKinds = map[reflect.Kind]struct{}{
reflect.Chan: {},
reflect.Func: {},
reflect.Interface: {},
reflect.Map: {},
reflect.Ptr: {},
reflect.Slice: {},
}
)
func reflectNew(target interface{}) interface{} {
if target == nil {
return nil
}
t := reflect.TypeOf(target)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
newStruc := reflect.New(t)
return newStruc.Interface()
}
// isEmpty only for mptt key field
func isEmpty(object interface{}) bool {
if object == nil {
return true
}
fieldType := reflect.TypeOf(object)
switch fieldType.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return reflect.ValueOf(object).Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return reflect.ValueOf(object).Uint() == 0
case reflect.String:
return reflect.ValueOf(object).String() == ""
case reflect.Float32, reflect.Float64:
return reflect.ValueOf(object).Float() == 0
case reflect.Struct:
return reflect.DeepEqual(object, reflect.New(fieldType).Elem().Interface())
default:
return false
}
}
// IsNil if the object is nil
func IsNil(object interface{}) bool {
if object == nil {
return true
}
value := reflect.ValueOf(object)
if _, isNullableKind := nullableKinds[value.Kind()]; isNullableKind && value.IsNil() {
return true
}
return false
}
func (t *tree) validateType(n interface{}) error {
kind := reflect.TypeOf(n).Kind()
if kind != reflect.Ptr {
return ModelTypeError
}
return nil
}
func (t *tree) equalIDValue(ida, idb interface{}) bool {
typeA := reflect.TypeOf(ida)
typeB := reflect.TypeOf(idb)
// 如果类型不同,返回 false
if typeA != typeB {
return false
}
return reflect.DeepEqual(ida, idb)
}