Trait Leaf 

pub trait Leaf<'i>: Sized {
    type Output;

    // Required method
    fn parse(&self, input: &'i [u8]) -> LeafResult<'i, Self::Output>;
}

Trait implemented by atomic, fail‑fast parsers.

Leaf parsers always return the first error they encounter without backtracking.

Required Associated Types

type Output

Type of the value produced by parse when successful.

Required Methods

fn parse(&self, input: &'i [u8]) -> LeafResult<'i, Self::Output>

Parse one item, returning immediately on error without backtracking.

Returns a tuple of the successfully parsed Output value and the remaining bytes, or a tuple containing a ParseError and the location of the error.

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<'i> Leaf<'i> for &'static str

Matches the string literal exactly.

Normally used with with_prefix or with_suffix.

type Output = ()

fn parse(&self, input: &'i [u8]) -> LeafResult<'i, Self::Output>

impl<'i> Leaf<'i> for u8

Matches the byte exactly.

Normally used with with_prefix or with_suffix.

type Output = ()

fn parse(&self, input: &'i [u8]) -> LeafResult<'i, Self::Output>

Implementors

impl<'i, F: Fn(&'i [u8]) -> LeafResult<'i, O>, O> Leaf<'i> for F

Allow custom functions/closures to be used as Leaf parsers.

type Output = O