Enum rustc_error_messages::DiagMessage

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pub enum DiagMessage {
    Str(Cow<'static, str>),
    Translated(Cow<'static, str>),
    FluentIdentifier(Cow<'static, str>, Option<Cow<'static, str>>),
}
Expand description

Abstraction over a message in a diagnostic to support both translatable and non-translatable diagnostic messages.

Intended to be removed once diagnostics are entirely translatable.

Variants§

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Str(Cow<'static, str>)

Non-translatable diagnostic message.

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Translated(Cow<'static, str>)

Translatable message which has been already translated.

Some diagnostics have repeated subdiagnostics where the same interpolated variables would be instantiated multiple times with different values. These subdiagnostics’ messages are translated when they are added to the parent diagnostic, producing this variant of DiagMessage.

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FluentIdentifier(Cow<'static, str>, Option<Cow<'static, str>>)

Identifier for a Fluent message (with optional attribute) corresponding to the diagnostic message. Yet to be translated.

https://projectfluent.org/fluent/guide/hello.html https://projectfluent.org/fluent/guide/attributes.html

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impl DiagMessage

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pub fn with_subdiagnostic_message(&self, sub: SubdiagMessage) -> Self

Given a SubdiagMessage which may contain a Fluent attribute, create a new DiagMessage that combines that attribute with the Fluent identifier of self.

  • If the SubdiagMessage is non-translatable then return the message as a DiagMessage.
  • If self is non-translatable then return self’s message.
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pub fn as_str(&self) -> Option<&str>

Trait Implementations§

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impl Clone for DiagMessage

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fn clone(&self) -> DiagMessage

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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: SpanDecoder> Decodable<__D> for DiagMessage

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

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impl<__E: SpanEncoder> Encodable<__E> for DiagMessage

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

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impl From<&'static str> for DiagMessage

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fn from(s: &'static str) -> Self

Converts to this type from the input type.
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impl From<Cow<'static, str>> for DiagMessage

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fn from(s: Cow<'static, str>) -> Self

Converts to this type from the input type.
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impl<F: FnOnce() -> String> From<DelayDm<F>> for DiagMessage

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fn from(DelayDm: DelayDm<F>) -> Self

Converts to this type from the input type.
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impl From<String> for DiagMessage

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fn from(s: String) -> Self

Converts to this type from the input type.
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impl Hash for DiagMessage

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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 Into<SubdiagMessage> for DiagMessage

Translating into a subdiagnostic message from a diagnostic message is a little strange - but the subdiagnostic functions (e.g. span_label) take a SubdiagMessage and the subdiagnostic derive refers to typed identifiers that are DiagMessages, so need to be able to convert between these, as much as they’ll be converted back into DiagMessage using with_subdiagnostic_message eventually. Don’t use this other than for the derive.

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fn into(self) -> SubdiagMessage

Converts this type into the (usually inferred) input type.
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impl PartialEq for DiagMessage

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fn eq(&self, other: &DiagMessage) -> 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 Eq for DiagMessage

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impl StructuralPartialEq for DiagMessage

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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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> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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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<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. 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> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where 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 T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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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 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.
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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T
where T: Send + Sync,

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.

Size: 48 bytes

Size for each variant:

  • Str: 32 bytes
  • Translated: 32 bytes
  • FluentIdentifier: 48 bytes