Enum liblet::production::ProductionError

pub enum ProductionError {
    NoLhs,
    NoRhs,
    SymbolError(SymbolError),
    FormatError(TokenizerError),
}

Variants

NoLhs

Error returned for trying to create a Production with an empty / missing left hand side. Left hand side of productions should be an ordered collection of n >= 1 symbols.

NoRhs

Error returned for trying to create a Production with an empty / missing right hand side. Right hand side of productions should be an ordered collection of n >= 1 symbols.

SymbolError(SymbolError)

Error returned for trying to create a Production with invalid symbols. To be expected when creating productions from raw string inputs.

FormatError(TokenizerError)

Error returned for trying to create a Production with a bad formatted raw input string. Properly formatted productions as strings are described in the Production documentation.

Trait Implementations

impl Clone for ProductionError

fn clone(&self) -> ProductionError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ProductionError

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

Formats the value using the given formatter.

impl Display for ProductionError

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

Formats the value using the given formatter.

impl Eq for ProductionError

impl Error for ProductionError

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<ProductionError> for GrammarError

fn from(e: ProductionError) -> Self

Performs the conversion.

impl From<TokenizerError> for ProductionError

fn from(e: TokenizerError) -> Self

Performs the conversion.

impl Hash for ProductionError

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<ProductionError> for ProductionError

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

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

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

This method tests for !=.

impl StructuralEq for ProductionError

impl StructuralPartialEq for ProductionError