Enum ParentRef 

pub enum ParentRef<T> {
    Root,
    Id(T),
}

Родительская ссылка с явным корнем (-1) или валидным id.

Variants

Root

Корневой элемент (-1 в API).

Id(T)

Ссылка на родительский элемент.

Implementations

impl<T> ParentRef<T>

where T: TryFrom<i32, Error = InputError> + Copy,

pub fn new(value: i32) -> Result<Self, InputError>

Создаёт ссылку из сырого значения API.

pub fn is_root(self) -> bool

Возвращает true, если это корневая ссылка.

impl<T: Copy> ParentRef<T>

pub fn id(self) -> Option<T>

Возвращает id родителя, если ссылка не корневая.

Trait Implementations

impl<T: Clone> Clone for ParentRef<T>

fn clone(&self) -> ParentRef<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for ParentRef<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de, T> Deserialize<'de> for ParentRef<T>

where T: TryFrom<i32, Error = InputError> + Copy,

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Hash> Hash for ParentRef<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: PartialEq> PartialEq for ParentRef<T>

fn eq(&self, other: &ParentRef<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> Serialize for ParentRef<T>

where T: Copy + Into<i32>,

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Copy> Copy for ParentRef<T>

impl<T: Eq> Eq for ParentRef<T>

impl<T> StructuralPartialEq for ParentRef<T>