Enum rusty_lr::ParseError

pub enum ParseError<'a, Term, NonTerm, CallbackError, ReduceActionError> {
    InvalidNonTerminal(&'a NonTerm, &'a [ProductionRule<Term, NonTerm>], &'a [State<Term, NonTerm>], Vec<usize>),
    InvalidTerminal(Term, &'a [ProductionRule<Term, NonTerm>], &'a [State<Term, NonTerm>], Vec<usize>),
    Callback(CallbackError),
    ReduceAction(ReduceActionError),
}

Error type for feed()

Variants

InvalidNonTerminal(&'a NonTerm, &'a [ProductionRule<Term, NonTerm>], &'a [State<Term, NonTerm>], Vec<usize>)

Invalid non-terminal feeded. This variant should be removed in the future. it will not occur if the grammar is builded correctly

InvalidTerminal(Term, &'a [ProductionRule<Term, NonTerm>], &'a [State<Term, NonTerm>], Vec<usize>)

Invalid terminal feeded

Callback(CallbackError)

Error from callback trait

ReduceAction(ReduceActionError)

Error from macro reduce action

Implementations

impl<'a, Term, NonTerm, CallbackError, ReduceActionError> ParseError<'a, Term, NonTerm, CallbackError, ReduceActionError>

pub fn backtrace( rules: &[ProductionRule<Term, NonTerm>], states: &[State<Term, NonTerm>], state_stack: &[usize], ) -> Vec<BTreeSet<ShiftedRuleRef>>

where NonTerm: PartialEq,

generate backtrace information. returned Vec holds a list of ruleset, each ruleset is what current state was trying to parse. 0’th index is the latest, that is, the last element of Vec will hold the initial state’s ruleset

Trait Implementations

impl<'a, Term, NonTerm, CallbackError, ReduceActionError> Debug for ParseError<'a, Term, NonTerm, CallbackError, ReduceActionError>

where Term: Debug + Hash + Eq, NonTerm: Debug + PartialEq, CallbackError: Debug, ReduceActionError: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'a, Term, NonTerm, CallbackError, ReduceActionError> Display for ParseError<'a, Term, NonTerm, CallbackError, ReduceActionError>

where Term: Display + Hash + Eq, NonTerm: Display + PartialEq, CallbackError: Display, ReduceActionError: Display,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.