Enum SpanError 

#[non_exhaustive]
pub enum SpanError {
    OutOfBounds {
        faulty_index: usize,
        source_len: usize,
    },
    Overflow,
    MismatchedSource,
}

The Error enum used by Span

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

OutOfBounds

Triggered when constructing a Span or a SpanLocation if it would result in an instance that is partially, or fully, out of bounds.

Fields

faulty_index: usize

The index that triggered the error.

source_len: usize

The length of the source of the Span or the SpanLocation where the error occured.

Overflow

Triggered when constructing a Span and seeing an overflow occur when calculating the end of the span.

MismatchedSource

Triggered when two (or potentially more) Spans are trying to perform an operation whilst having differing sources.

Trait Implementations

impl Debug for SpanError

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

Formats the value using the given formatter.

impl Display for SpanError

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

Formats the value using the given formatter.

impl Error for SpanError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for SpanError

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

impl StructuralPartialEq for SpanError

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: 24 bytes

Size for each variant:

• OutOfBounds: 16 bytes
• Overflow: 0 bytes
• MismatchedSource: 0 bytes