Enum LexError

pub enum LexError<F: Fail> {
    InvalidCharacter(char),
    InvalidToken(String),
    InputError(F),
}

The error type for the lexers produced by Lexer implementations.

Variants

InvalidCharacter(char)

The lexer encountered an invalid chararter in the input. This error occurs when the invalid character would be the first character of a new token.

InvalidToken(String)

The lexer encountered an invalid token in the input. This error occurs when the lexer has consumed some valid characters but cannot make further progress and the consumed characters do not form a valid token.

InputError(F)

The lexer encountered an error in the input stream.

Trait Implementations

impl<F: Debug + Fail> Debug for LexError<F>

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

Formats the value using the given formatter.

impl<F: Fail> Display for LexError<F>

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

Formats the value using the given formatter.

impl<F: Fail> Fail for LexError<F>

fn name(&self) -> Option<&str>

Returns the “name” of the error.

fn cause(&self) -> Option<&dyn Fail>

Returns a reference to the underlying cause of this failure, if it is an error that wraps other errors.

fn backtrace(&self) -> Option<&Backtrace>

Returns a reference to the Backtrace carried by this failure, if it carries one.

fn context<D>(self, context: D) -> Context<D>

where D: Display + Send + Sync + 'static, Self: Sized,

Provides context for this failure.

fn compat(self) -> Compat<Self>

where Self: Sized,

Wraps this failure in a compatibility wrapper that implements std::error::Error.

impl<F: Fail> From<F> for LexError<F>

fn from(f: F) -> LexError<F>

Converts to this type from the input type.