pub struct MultiSpan {
    pub(crate) primary_spans: Vec<Span>,
    pub(crate) span_labels: Vec<(Span, DiagnosticMessage)>,
}
Expand description

A collection of Spans.

Spans have two orthogonal attributes:

  • They can be primary spans. In this case they are the locus of the error, and would be rendered with ^^^.
  • They can have a label. In this case, the label is written next to the mark in the snippet when we render.

Fields§

§primary_spans: Vec<Span>§span_labels: Vec<(Span, DiagnosticMessage)>

Implementations§

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impl MultiSpan

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pub fn new() -> MultiSpan

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pub fn from_span(primary_span: Span) -> MultiSpan

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pub fn from_spans(vec: Vec<Span>) -> MultiSpan

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pub fn push_span_label(&mut self, span: Span, label: impl Into<DiagnosticMessage>)

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pub fn primary_span(&self) -> Option<Span>

Selects the first primary span (if any).

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pub fn primary_spans(&self) -> &[Span]

Returns all primary spans.

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pub fn has_primary_spans(&self) -> bool

Returns true if any of the primary spans are displayable.

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pub fn is_dummy(&self) -> bool

Returns true if this contains only a dummy primary span with any hygienic context.

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pub fn replace(&mut self, before: Span, after: Span) -> bool

Replaces all occurrences of one Span with another. Used to move Spans in areas that don’t display well (like std macros). Returns whether replacements occurred.

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pub fn span_labels(&self) -> Vec<SpanLabel>

Returns the strings to highlight. We always ensure that there is an entry for each of the primary spans – for each primary span P, if there is at least one label with span P, we return those labels (marked as primary). But otherwise we return SpanLabel instances with empty labels.

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pub fn has_span_labels(&self) -> bool

Returns true if any of the span labels is displayable.

Trait Implementations§

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impl Clone for MultiSpan

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fn clone(&self) -> MultiSpan

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 MultiSpan

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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 MultiSpan

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

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impl<__E: Encoder> Encodable<__E> for MultiSpan

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

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impl From<Span> for MultiSpan

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fn from(span: Span) -> MultiSpan

Converts to this type from the input type.
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impl From<Vec<Span, Global>> for MultiSpan

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fn from(spans: Vec<Span>) -> MultiSpan

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

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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 PartialEq<MultiSpan> for MultiSpan

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fn eq(&self, other: &MultiSpan) -> 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 MultiSpan

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impl StructuralEq for MultiSpan

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impl StructuralPartialEq for MultiSpan

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

const: unstable · source§

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.

Size: 48 bytes