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GateOutcome

Enum GateOutcome 

Source
pub enum GateOutcome {
    Allow,
    Deny {
        refusal: Box<AxError>,
    },
    Ask {
        question: Box<AxError>,
    },
}
Expand description

Deliberately exhaustive, and the third arm is deliberately rare.

Every caller decides all three ways, so a door that starts asking a person is a compile error at every caller rather than a behaviour that changes underneath them. Exactly one door answers Ask (attach); the refusal matrix asserts that count.

Variants§

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Allow

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Deny

Fields

§refusal: Box<AxError>
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Ask

The door cannot answer, and the person can. The error carries the question: E_APPROVAL_PENDING, the three gate parts, and a recovery sentence naming the action only the person can take.

Fields

§question: Box<AxError>

Trait Implementations§

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impl Debug for GateOutcome

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

Formats the value using the given formatter. Read more

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.