Struct InstanceExt

pub struct InstanceExt<Txn, T> { /* private fields */ }

A user-defined instance, subclassing T.

Implementations

impl<Txn, T> InstanceExt<Txn, T>

where T: Instance,

pub fn new(parent: T, class: InstanceClass) -> Self

Construct a new instance of the given user-defined InstanceClass.

pub fn anonymous( parent: T, class: InstanceClass, members: Map<State<Txn>>, ) -> Self

Construct a new instance of an anonymous class.

pub fn members(&self) -> &Map<State<Txn>>

Borrow the members of this instance.

pub fn parent(&self) -> &T

Borrow the parent of this instance.

pub fn proto(&self) -> &Map<Scalar>

Borrow the class prototype of this instance.

pub fn try_into<E, O: Instance + TryFrom<T, Error = E>>( self, ) -> Result<InstanceExt<Txn, O>, E>

Convert the native type of this instance, if possible.

Trait Implementations

impl<Txn, T> Clone for InstanceExt<Txn, T>

where T: Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Txn, T> Debug for InstanceExt<Txn, T>

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

Formats the value using the given formatter.

impl<Txn, T> Deref for InstanceExt<Txn, T>

where T: Instance,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<Txn> From<InstanceExt<Txn, State<Txn>>> for Object<Txn>

fn from(instance: InstanceExt<Txn, State<Txn>>) -> Self

Converts to this type from the input type.

impl<Txn, T> Instance for InstanceExt<Txn, T>

where Txn: Send + Sync, T: Instance,

type Class = InstanceClass

The Class type of this instance

fn class(&self) -> Self::Class

Returns the [Class] of this instance.

impl<Txn, T> Route<State<Txn>> for InstanceExt<Txn, T>

where Txn: Transaction<CacheBlock> + Gateway<State<Txn>>, T: ToState<State<Txn>> + Instance + Route<State<Txn>> + Debug, Self: ToState<State<Txn>>,

fn route<'a>( &'a self, path: &'a [PathSegment], ) -> Option<Box<dyn Handler<'a, State<Txn>> + 'a>>

impl<Txn, T> ToState<State<Txn>> for InstanceExt<Txn, T>

where Txn: Transaction<CacheBlock> + Gateway<State<Txn>>, T: Instance + ToState<State<Txn>>,

fn to_state(&self) -> State<Txn>

impl<Txn, T> TryCastFrom<InstanceExt<Txn, T>> for Scalar

where T: Debug, Scalar: TryCastFrom<T>,

fn can_cast_from(instance: &InstanceExt<Txn, T>) -> bool

Test if value can be cast into Self.

fn opt_cast_from(instance: InstanceExt<Txn, T>) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<Txn, T> TryCastFrom<InstanceExt<Txn, T>> for Value

where T: Debug, Value: TryCastFrom<T>,

fn can_cast_from(instance: &InstanceExt<Txn, T>) -> bool

Test if value can be cast into Self.

fn opt_cast_from(instance: InstanceExt<Txn, T>) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.