Enum EmissionError 

pub enum EmissionError {
    NumberRejected {
        spelling: String,
    },
    NulTerminatedTextRejected,
    SourceSpanRosterContradiction,
    SourceSpanUnresolved(SpanResolutionRefusal),
}

Why one admitted generated literal could not cross the compiler-token host.

This is a host contradiction rather than a declaration diagnostic: the ordinary compiler admitted the literal before the proc API was asked to materialize it.

Variants

NumberRejected

The proc-macro literal API rejected one already admitted numeric spelling.

Fields

spelling: String

The exact admitted numeric spelling.

NulTerminatedTextRejected

The proc-macro C-string literal API rejected already admitted C-string material.

SourceSpanRosterContradiction

A generated tree’s private source roster no longer matches its recursive token denominator.

SourceSpanUnresolved(SpanResolutionRefusal)

One preserved source handle does not resolve in the capture table supplied for emission.

Trait Implementations

impl Clone for EmissionError

fn clone(&self) -> EmissionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EmissionError

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

Formats the value using the given formatter.

impl Display for EmissionError

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

Formats the value using the given formatter.

impl Eq for EmissionError

impl Error for EmissionError

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 Hash for EmissionError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EmissionError

fn eq(&self, other: &EmissionError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for EmissionError