Enum luther::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, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

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

fn cause(&self) -> Option<&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, 

Provides context for this failure.

fn compat(self) -> Compat<Self>

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

fn causes(&self) -> Causes

Returns a iterator over the causes of this Fail with itself as the first item and the root_cause as the final item.

fn root_cause(&self) -> &(Fail + 'static)

Returns the "root cause" of this Fail - the last value in the cause chain which does not return an underlying cause.

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

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

Formats the value using the given formatter.

impl<F: Fail> From<F> for LexError<F>

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

Performs the conversion.