Enum syn::punctuated::Pair

pub enum Pair<T, P> {
    Punctuated(T, P),
    End(T),
}

A single syntax tree node of type T followed by its trailing punctuation of type P if any.

Refer to the module documentation for details about punctuated sequences.

Variants

Punctuated(T, P)End(T)

Methods

impl<T, P> Pair<T, P>

pub fn into_value(self) -> T

Extracts the syntax tree node from this punctuated pair, discarding the following punctuation.

Important traits for &'a mut W

impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn value(&self) -> &T

Borrows the syntax tree node from this punctuated pair.

Important traits for &'a mut W

impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn value_mut(&mut self) -> &mut T

Mutably borrows the syntax tree node from this punctuated pair.

pub fn punct(&self) -> Option<&P>

Borrows the punctuation from this punctuated pair, unless this pair is the final one and there is no trailing punctuation.

pub fn new(t: T, d: Option<P>) -> Self

Creates a punctuated pair out of a syntax tree node and an optional following punctuation.

pub fn into_tuple(self) -> (T, Option<P>)

Produces this punctuated pair as a tuple of syntax tree node and optional following punctuation.

Trait Implementations

impl<T, P> ToTokens for Pair<T, P> where     T: ToTokens,     P: ToTokens,

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object.

impl<T, P> FromIterator<Pair<T, P>> for Punctuated<T, P>

fn from_iter<I: IntoIterator<Item = Pair<T, P>>>(i: I) -> Self

Creates a value from an iterator.

impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P>

fn extend<I: IntoIterator<Item = Pair<T, P>>>(&mut self, i: I)

Extends a collection with the contents of an iterator.