Enum GrammarRoundTripError 

pub enum GrammarRoundTripError {
    Import(GrammarImportError),
    Emit(GrammarEmitError),
    Normalize(GrammarMergeError),
    MissingStartRule,
}

Why the guard could not run.

Variants

Import(GrammarImportError)

The importer rejected a source, such as a malformed grammar.

Emit(GrammarEmitError)

The emitter rejected a grammar.

Normalize(GrammarMergeError)

A rule definition could not be normalized for comparison.

MissingStartRule

The grammar has no start rule to mutate.

Trait Implementations

impl Clone for GrammarRoundTripError

fn clone(&self) -> GrammarRoundTripError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GrammarRoundTripError

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

Formats the value using the given formatter.

impl Display for GrammarRoundTripError

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

Formats the value using the given formatter.

impl Eq for GrammarRoundTripError

impl Error for GrammarRoundTripError

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 From<GrammarEmitError> for GrammarRoundTripError

fn from(error: GrammarEmitError) -> Self

Converts to this type from the input type.

impl From<GrammarImportError> for GrammarRoundTripError

fn from(error: GrammarImportError) -> Self

Converts to this type from the input type.

impl From<GrammarMergeError> for GrammarRoundTripError

fn from(error: GrammarMergeError) -> Self

Converts to this type from the input type.

impl From<GrammarRoundTripError> for GrammarLoweringError

fn from(error: GrammarRoundTripError) -> Self

Converts to this type from the input type.

impl PartialEq for GrammarRoundTripError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for GrammarRoundTripError