Struct OptionalSpanTrace 

pub struct OptionalSpanTrace(/* private fields */);

A wrapper around Option<SpanTrace> that implements Capturable.

is_some / is_none reflect whether a SpanTrace value is present, not whether it was successfully captured: the some and From constructors wrap unconditionally, so a present trace may still be empty/unsupported. Only the Capturable construction path enforces is_some() == captured.

Implementations

impl OptionalSpanTrace

pub const fn none() -> Self

Create an empty OptionalSpanTrace.

pub const fn some(trace: SpanTrace) -> Self

Create an OptionalSpanTrace from an existing SpanTrace.

pub fn into_inner(self) -> Option<SpanTrace>

Returns the inner Option<SpanTrace>.

pub const fn as_ref(&self) -> Option<&SpanTrace>

Returns a reference to the inner SpanTrace if present.

pub const fn is_some(&self) -> bool

Returns true if this contains a span trace.

pub const fn is_none(&self) -> bool

Returns true if this does not contain a span trace.

Trait Implementations

impl Capturable for OptionalSpanTrace

fn capture() -> Self

Capture a fresh value at the point the error is constructed.

fn capture_or_extract(source: &dyn Diagnostic) -> Self

Capture for an error that wraps source, reusing equivalent data already on source when that is more useful than a fresh capture.

impl Clone for OptionalSpanTrace

fn clone(&self) -> OptionalSpanTrace

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptionalSpanTrace

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

Formats the value using the given formatter.

impl Default for OptionalSpanTrace

fn default() -> OptionalSpanTrace

Returns the “default value” for a type.

impl Display for OptionalSpanTrace

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

Formats the value using the given formatter.

impl From<Option<SpanTrace>> for OptionalSpanTrace

fn from(opt: Option<SpanTrace>) -> Self

Converts to this type from the input type.

impl From<SpanTrace> for OptionalSpanTrace

fn from(trace: SpanTrace) -> Self

Converts to this type from the input type.