Struct frame_support::traits::TryMapSuccess

source · 
pub struct TryMapSuccess<Orig, Mutator>(_);
Expand description

A derivative EnsureOrigin implementation. It mutates the Success result of an Original implementation with a given Mutator, allowing the possibility of an error to be returned from the mutator.

NOTE: This is strictly worse performance than MapSuccess since it clones the original origin value. If possible, use MapSuccess instead.

Trait Implementations§

source§

impl<O: Clone, Original: EnsureOrigin<O>, Mutator: TryMorph<Original::Success>> EnsureOrigin<O> for TryMapSuccess<Original, Mutator>

§

type Success = <Mutator as TryMorph<<Original as EnsureOrigin<O>>::Success>>::Outcome

A return type.
source§

fn try_origin(o: O) -> Result<Mutator::Outcome, O>

Perform the origin check.
source§

fn try_successful_origin() -> Result<O, ()>

Attempt to get an outer origin capable of passing try_origin check. May return Err if it is impossible. Read more
source§

fn ensure_origin(o: OuterOrigin) -> Result<Self::Success, BadOrigin>

Perform the origin check.
source§

impl<O: Clone, Original: EnsureOriginWithArg<O, A>, Mutator: TryMorph<Original::Success>, A> EnsureOriginWithArg<O, A> for TryMapSuccess<Original, Mutator>

§

type Success = <Mutator as TryMorph<<Original as EnsureOriginWithArg<O, A>>::Success>>::Outcome

A return type.
source§

fn try_origin(o: O, a: &A) -> Result<Mutator::Outcome, O>

Perform the origin check, returning the origin value if unsuccessful. This allows chaining.
source§

fn try_successful_origin(a: &A) -> Result<O, ()>

Attempt to get an outer origin capable of passing try_origin check. May return Err if it is impossible. Read more
source§

fn ensure_origin( o: OuterOrigin, a: &Argument ) -> Result<Self::Success, BadOrigin>

Perform the origin check.

Auto Trait Implementations§

§

impl<Orig, Mutator> RefUnwindSafe for TryMapSuccess<Orig, Mutator>where Mutator: RefUnwindSafe, Orig: RefUnwindSafe,

§

impl<Orig, Mutator> Send for TryMapSuccess<Orig, Mutator>where Mutator: Send, Orig: Send,

§

impl<Orig, Mutator> Sync for TryMapSuccess<Orig, Mutator>where Mutator: Sync, Orig: Sync,

§

impl<Orig, Mutator> Unpin for TryMapSuccess<Orig, Mutator>where Mutator: Unpin, Orig: Unpin,

§

impl<Orig, Mutator> UnwindSafe for TryMapSuccess<Orig, Mutator>where Mutator: UnwindSafe, Orig: UnwindSafe,

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CheckedConversion for T

source§

fn checked_from<T>(t: T) -> Option<Self>where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
source§

fn checked_into<T>(self) -> Option<T>where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
source§

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> Instrument for T

source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T, Outer> IsWrappedBy<Outer> for Twhere Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

source§

fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

source§

fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

§

impl<T> Pointable for T

§

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
§

type Init = T

The type for initializers.
§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

impl<T> Same<T> for T

§

type Output = T

Should always be Self
source§

impl<T> SaturatedConversion for T

source§

fn saturated_from<T>(t: T) -> Selfwhere Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more
source§

fn saturated_into<T>(self) -> Twhere Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<S, T> UncheckedInto<T> for Swhere T: UncheckedFrom<S>,

source§

fn unchecked_into(self) -> T

The counterpart to unchecked_from.
source§

impl<T, S> UniqueSaturatedInto<T> for Swhere T: Bounded, S: TryInto<T>,

source§

fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
§

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

§

fn vzip(self) -> V

source§

impl<T> WithSubscriber for T

source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
§

impl<T> JsonSchemaMaybe for T

source§

impl<T> MaybeRefUnwindSafe for Twhere T: RefUnwindSafe,