Trait Tokens 

pub trait Tokens {
    type Error;

    // Required methods
    fn peek(&mut self) -> Result<(Option<&Token>, Span), (Self::Error, Span)>;
    fn next(&mut self) -> Result<(Option<Token>, Span), (Self::Error, Span)>;
    fn last(&self) -> Span;
}

Fallible tokens iterator with lookahead.

Required Associated Types

type Error

Required Methods

fn peek(&mut self) -> Result<(Option<&Token>, Span), (Self::Error, Span)>

fn next(&mut self) -> Result<(Option<Token>, Span), (Self::Error, Span)>

fn last(&self) -> Span

Returns the span of the last parsed token.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<E, C: Iterator<Item = Result<DecodedChar, E>>> Tokens for Lexer<C, E>

type Error = Error<E>