pub struct ErrorGuaranteed(pub(crate) ());
Expand description

Useful type to use with Result<> indicate that an error has already been reported to the user, so no need to continue checking.

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§0: ()

Implementations§

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impl ErrorGuaranteed

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pub fn unchecked_claim_error_was_emitted() -> Self

To be used only if you really know what you are doing… ideally, we would find a way to eliminate all calls to this method.

Trait Implementations§

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impl Clone for ErrorGuaranteed

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fn clone(&self) -> ErrorGuaranteed

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
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impl Debug for ErrorGuaranteed

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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<__D: Decoder> Decodable<__D> for ErrorGuaranteed

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fn decode(__decoder: &mut __D) -> Self

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impl EmissionGuarantee for ErrorGuaranteed

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fn diagnostic_builder_emit_producing_guarantee(
    db: &mut DiagnosticBuilder<'_, Self>
) -> Self

Implementation of DiagnosticBuilder::emit, fully controlled by each impl of EmissionGuarantee, to make it impossible to create a value of Self without actually performing the emission.
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fn make_diagnostic_builder(
    handler: &Handler,
    msg: impl Into<DiagnosticMessage>
) -> DiagnosticBuilder<'_, Self>

Creates a new DiagnosticBuilder that will return this type of guarantee.
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impl<__E: Encoder> Encodable<__E> for ErrorGuaranteed

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fn encode(&self, __encoder: &mut __E)

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impl Hash for ErrorGuaranteed

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<__CTX> HashStable<__CTX> for ErrorGuaranteedwhere
    __CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl Ord for ErrorGuaranteed

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fn cmp(&self, other: &ErrorGuaranteed) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl PartialEq<ErrorGuaranteed> for ErrorGuaranteed

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fn eq(&self, other: &ErrorGuaranteed) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd<ErrorGuaranteed> for ErrorGuaranteed

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fn partial_cmp(&self, other: &ErrorGuaranteed) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Copy for ErrorGuaranteed

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impl Eq for ErrorGuaranteed

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impl StructuralEq for ErrorGuaranteed

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impl StructuralPartialEq for ErrorGuaranteed

Auto Trait Implementations§

Blanket Implementations§

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

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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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
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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 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.

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impl<T> ToOwned for Twhere
    T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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

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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.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

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