Enum liblet::TokenizerError

pub enum TokenizerError {
    ProductionNoLhs,
    ProductionNoRhs(String),
    ProductionNoSeparator(String),
    ProductionMultipleOneLine(usize),
    ProductionMultiple(String),
    ProductionEmpty(String),
    TransitionNoTo(String),
    TransitionNoLabel(String),
    TransitionMultipleOneLine(usize),
    TransitionMultiple(String),
    TransitionEmpty(String),
}

Errors resulting from tokenizing strings.

When parsing custom strings, invalid or bad formatted strings can generate tokenizer errors, according to which representation is expected.

Variants

ProductionNoLhs

Error for productions which doesn't have a left hand side

ProductionNoRhs(String)

Error for productions which doesn't have a right hand side

ProductionNoSeparator(String)

Error for productions which doesn't have the production separator (see Production module for further details)

ProductionMultipleOneLine(usize)

Error for having multiple productions on the same row/line

ProductionMultiple(String)

Error for having multiple productions when expecting only one in the whole given string

ProductionEmpty(String)

Error for having a given string not containing any production but at least one was expected (see Production documentation for further details)

TransitionNoTo(String)

Error for having no "to" part in the transition

TransitionNoLabel(String)

Error for having no "label" part in the transition

TransitionMultipleOneLine(usize)

Error for having no "from" part in the transition

TransitionMultiple(String)

Error for having too many transitions but expected one in the whole given string

TransitionEmpty(String)

Error for having a given string not containing any transition but at least one was expected (see Transition documentation for further details)

Trait Implementations

impl Clone for TokenizerError

fn clone(&self) -> TokenizerError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TokenizerError

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

Formats the value using the given formatter.

impl Display for TokenizerError

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

Formats the value using the given formatter.

impl Eq for TokenizerError

impl Error for TokenizerError

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

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

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<TokenizerError> for TransitionError

fn from(e: TokenizerError) -> Self

Performs the conversion.

impl From<TokenizerError> for ProductionError

fn from(e: TokenizerError) -> Self

Performs the conversion.

impl Hash for TokenizerError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq<TokenizerError> for TokenizerError

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralEq for TokenizerError

impl StructuralPartialEq for TokenizerError