Trait Peek 

pub(crate) trait Peek: Copy {
    // Required method
    fn matches(self, tok: TokenKind, edition: Edition) -> bool;
}

A trait for testing whether a token matches a rule.

Required Methods

fn matches(self, tok: TokenKind, edition: Edition) -> bool

Returns true if a token matches this rule

The rule is edition dependent because keywords can vary.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Peek for Symbol

Use a Symbol to match a TokenKind::Ident equal to it.

fn matches(self, tok: TokenKind, _: Edition) -> bool

Implementors

impl Peek for TokenKind

Use a TokenKind to match by exact equality

impl Peek for AnyLit

impl Peek for LAngle

impl Peek for NonReserved

impl Peek for RAngle

impl<F: FnOnce(TokenKind) -> bool + Copy> Peek for F

An arbitrary peek rule defined by a predicate on TokenKind

impl<T: Peek, const N: usize> Peek for AnyOf<T, N>