Enum luther::LexError
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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>
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl<F: Fail> Fail for LexError<F> where
F: Fail,
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F: Fail,
fn cause(&self) -> Option<&Fail>
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Returns a reference to the underlying cause of this failure, if it is an error that wraps other errors. Read more
fn backtrace(&self) -> Option<&Backtrace>
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Returns a reference to the Backtrace
carried by this failure, if it carries one. Read more
fn context<D>(self, context: D) -> Context<D> where
D: Display + Send + Sync + 'static,
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D: Display + Send + Sync + 'static,
Provides context for this failure. Read more
fn compat(self) -> Compat<Self>
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Wraps this failure in a compatibility wrapper that implements std::error::Error
. Read more
fn causes(&self) -> Causes
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Returns a iterator over the causes of this Fail
with itself as the first item and the root_cause
as the final item. Read more
fn root_cause(&self) -> &(Fail + 'static)
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Returns the "root cause" of this Fail
- the last value in the cause chain which does not return an underlying cause
. Read more
impl<F: Fail> Display for LexError<F> where
F: Display,
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F: Display,
fn fmt(&self, f: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more