Enum LexFailure 

pub enum LexFailure {
    Build(LexerBuildError),
    Lex(ParseError),
}

What Lark::lex can fail with. Build, lex and parse errors stay separate categories: Build is the deferred lexer’s construction failure (the category LarkBuildError::Lexer already maps to lark’s LexError), Lex is a failure of the lex itself (UnexpectedCharacters, Callback, Postlex, …).

Variants

Build(LexerBuildError)

Lex(ParseError)

Trait Implementations

impl Clone for LexFailure

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LexFailure

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

Formats the value using the given formatter.

impl Display for LexFailure

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

Formats the value using the given formatter.

impl Eq for LexFailure

impl Error for LexFailure

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<LexerBuildError> for LexFailure

fn from(e: LexerBuildError) -> Self

Converts to this type from the input type.

impl From<ParseError> for LexFailure

fn from(e: ParseError) -> Self

Converts to this type from the input type.

impl PartialEq for LexFailure

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LexFailure