Struct ErrorGuaranteed

pub struct ErrorGuaranteed(pub(crate) ());

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

The () field is necessary: it is non-pub, which means values of this type cannot be constructed outside of this crate.

Tuple Fields

0: ()

Implementations

impl ErrorGuaranteed

pub fn unchecked_error_guaranteed() -> ErrorGuaranteed

👎Deprecated: should only be used in DiagCtxtInner::emit_diagnostic

Don’t use this outside of DiagCtxtInner::emit_diagnostic!

Trait Implementations

impl Clone for ErrorGuaranteed

fn clone(&self) -> ErrorGuaranteed

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorGuaranteed

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

Formats the value using the given formatter.

impl<D> Decodable<D> for ErrorGuaranteed

where D: Decoder,

fn decode(_d: &mut D) -> ErrorGuaranteed

impl EmissionGuarantee for ErrorGuaranteed

fn emit_producing_guarantee(diag: Diag<'_, Self>) -> Self::EmitResult

Implementation of Diag::emit, fully controlled by each impl of EmissionGuarantee, to make it impossible to create a value of Self::EmitResult without actually performing the emission.

type EmitResult = Self

This exists so that bugs and fatal errors can both result in ! (an abort) when emitted, but have different aborting behaviour.

impl<E> Encodable<E> for ErrorGuaranteed

where E: Encoder,

fn encode(&self, _e: &mut E)

impl Hash for ErrorGuaranteed

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

where __H: Hasher,

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<__CTX> HashStable<__CTX> for ErrorGuaranteed

where __CTX: HashStableContext,

fn hash_stable( &self, __hcx: &mut __CTX, __hasher: &mut StableHasher<SipHasher128>, )

impl Ord for ErrorGuaranteed

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ErrorGuaranteed

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

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for ErrorGuaranteed

impl Eq for ErrorGuaranteed

impl StructuralPartialEq for ErrorGuaranteed

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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