Struct branchy::Error

pub struct Error<Nt, T> where
    Nt: NonterminalValue,
    T: TerminalValue,  {
    pub state: Vec<Symbol<Nt, T>>,
    pub kind: ErrorKind<Nt>,
}

Used as error variant for Result.

The reason for the error can be determined via the kind field.

Fields

state: Vec<Symbol<Nt, T>>

kind: ErrorKind<Nt>

Methods

impl<Nt, T> Error<Nt, T> where
    Nt: NonterminalValue,
    T: TerminalValue, 

pub fn nonterm_expansion_failed(
    state: Vec<Symbol<Nt, T>>,
    expanded_nonterm_value: Nt
) -> Self

pub fn max_iterations_reached(
    state: Vec<Symbol<Nt, T>>,
    iterations: usize
) -> Self

Trait Implementations

impl<Nt, T> Debug for Error<Nt, T> where
    Nt: NonterminalValue,
    T: TerminalValue, 

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

Formats the value using the given formatter.

impl<Nt, T> Display for Error<Nt, T> where
    Nt: NonterminalValue,
    T: TerminalValue, 

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

Formats the value using the given formatter.

impl<Nt, T> Error for Error<Nt, T> where
    Nt: NonterminalValue,
    T: TerminalValue, 

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 1.41.0:

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