Trait ExactSizeInput 

pub trait ExactSizeInput<'src>: Input<'src> {
    // Required method
    unsafe fn span_from(
        cache: &mut Self::Cache,
        range: RangeFrom<&Self::Cursor>,
    ) -> Self::Span;
}

Implemented by inputs that have a known size.

In this case, ‘size’ means ‘number of generated tokens/spans’. You can think of this trait as filling the same niche as ExactSizeIterator.

Required Methods

unsafe fn span_from( cache: &mut Self::Cache, range: RangeFrom<&Self::Cursor>, ) -> Self::Span

Get a span from a start cursor to the end of the input.

Safety

As with functions on Input, the cursors provided must be generated by this input.

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<'src> ExactSizeInput<'src> for &'src str

unsafe fn span_from( this: &mut Self::Cache, range: RangeFrom<&Self::Cursor>, ) -> Self::Span

impl<'src> ExactSizeInput<'src> for Bytes

Available on crate feature bytes only.

unsafe fn span_from( this: &mut Self::Cache, range: RangeFrom<&Self::Cursor>, ) -> Self::Span

impl<'src, T> ExactSizeInput<'src> for &'src [T]

unsafe fn span_from( this: &mut Self::Cache, range: RangeFrom<&Self::Cursor>, ) -> Self::Span

impl<'src, T: 'src, const N: usize> ExactSizeInput<'src> for &'src [T; N]

unsafe fn span_from( this: &mut Self::Cache, range: RangeFrom<&Self::Cursor>, ) -> Self::Span

Implementors

impl<'src> ExactSizeInput<'src> for &'src Graphemes

impl<'src, I: ExactSizeIterator + 'src> ExactSizeInput<'src> for Stream<I>

where I::Item: Clone,

impl<'src, S, I> ExactSizeInput<'src> for WithContext<S, I>

where I: ExactSizeInput<'src> + Input<'src>, S: Span + Clone + 'src, S::Context: Clone + 'src, S::Offset: From<<I::Span as Span>::Offset>,

impl<'src, S, I, F> ExactSizeInput<'src> for MappedSpan<S, I, F>

where I: ExactSizeInput<'src> + Input<'src>, S: Span + Clone + 'src, S::Context: Clone + 'src, S::Offset: From<<I::Span as Span>::Offset>, F: Fn(I::Span) -> S + 'src,

impl<'src, T, S, I, F> ExactSizeInput<'src> for MappedInput<'src, T, S, I, F>

where I: ExactSizeInput<'src>, T: 'src, S: Span + Clone + 'src, F: Fn(I::MaybeToken) -> (<I::MaybeToken as IntoMaybe<'src, I::Token>>::Proj<T>, <I::MaybeToken as IntoMaybe<'src, I::Token>>::Proj<S>) + 'src,