Enum TokenSpanError 

pub enum TokenSpanError {
    EndBeforeStart {
        start: usize,
        end: usize,
    },
    EmptySpanNotAllowed {
        kind: TokenKind,
        at: usize,
    },
}

Error type for checked token/span constructors.

Variants

EndBeforeStart

End offset is before start offset.

Fields

start: usize

end: usize

EmptySpanNotAllowed

Empty span is only valid for EOF or explicit synthetic tokens.

Fields

kind: TokenKind

at: usize

Trait Implementations

impl Clone for TokenSpanError

fn clone(&self) -> TokenSpanError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenSpanError

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

Formats the value using the given formatter.

impl Display for TokenSpanError

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

Formats the value using the given formatter.

impl Error for TokenSpanError

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 TokenSpanError

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

impl StructuralPartialEq for TokenSpanError