Struct parser_compose::FailureLog

pub struct FailureLog { /* private fields */ }

A log of parser failures sorted by input position in descending order.

This is returned when when parsers fail.

Implementations

impl FailureLog

pub fn new() -> Self

Creates a new log of failures

pub fn add(&mut self, reason: Reason, position: usize)

Record a new parser failure at a given input position

pub fn pop(&mut self) -> Option<ParserFailure>

Pops ParserFailures from the log in descending order of input position

Ties are broken by failure reason. If there are two failures with the same position and reason, the first one inserted is removed first

Returns None if the log is empty

pub fn peek(&self) -> Option<&ParserFailure>

Peeks the next ParserFailure from the log in descending order of input position

Returns None if the log is empty

pub fn to_vec(self) -> Vec<ParserFailure>

Consumes the log and returns a vector of ParserFailures sorted in ascending order of input position

Trait Implementations

impl Debug for FailureLog

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

Formats the value using the given formatter.

impl Default for FailureLog

fn default() -> Self

Returns the “default value” for a type.