Struct Parenthesized

#[non_exhaustive]
pub struct Parenthesized<T, S> {
    pub open: OpenParen,
    pub parenthesized: Vec<(T, Option<S>)>,
    pub close: CloseParen,
}

Parse something parenthesis, that is separated by ((T, S?)*).

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

open: OpenParen

The open parenthesis.

parenthesized: Vec<(T, Option<S>)>

Values in the type.

close: CloseParen

The close parenthesis.

Implementations

impl<T, S> Parenthesized<T, S>

pub fn is_empty(&self) -> bool

Test if group is empty.

pub fn len(&self) -> usize

Get the length of elements in the group.

pub fn first(&self) -> Option<&(T, Option<S>)>

Get the first element in the group.

pub fn last(&self) -> Option<&(T, Option<S>)>

Get the last element in the group.

pub fn iter(&self) -> Iter<'_, (T, Option<S>)>

Iterate over elements in the group.

pub fn iter_mut(&mut self) -> IterMut<'_, (T, Option<S>)>

Iterate mutably over elements in the group.

pub fn as_slice(&self) -> &[(T, Option<S>)]

Get the group values as a slice.

pub fn as_mut(&mut self) -> &mut [(T, Option<S>)]

Get the group values as a mutable slice.

impl<T, S> Parenthesized<T, S>

where T: Parse, S: Peek + Parse,

pub fn parse_from_first( parser: &mut Parser<'_>, open: OpenParen, current: T, ) -> Result<Self, Error>

Parse with the first element already specified.

Trait Implementations

impl<T: Debug, S: Debug> Debug for Parenthesized<T, S>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, T, S> IntoIterator for &'a Parenthesized<T, S>

type Item = &'a (T, Option<S>)

The type of the elements being iterated over.

type IntoIter = Iter<'a, (T, Option<S>)>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'a, T, S> IntoIterator for &'a mut Parenthesized<T, S>

type Item = &'a mut (T, Option<S>)

The type of the elements being iterated over.

type IntoIter = IterMut<'a, (T, Option<S>)>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<T, S> IntoIterator for Parenthesized<T, S>

type Item = (T, Option<S>)

The type of the elements being iterated over.

type IntoIter = IntoIter<(T, Option<S>)>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<T, S> Parse for Parenthesized<T, S>

where T: Parse, S: Peek + Parse,

fn parse(parser: &mut Parser<'_>) -> Result<Self, Error>

Parse the current item from the parser.

impl<T: PartialEq, S: PartialEq> PartialEq for Parenthesized<T, S>

fn eq(&self, other: &Parenthesized<T, S>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T, S> Peek for Parenthesized<T, S>

fn peek(p: &mut Peeker<'_>) -> bool

Peek the parser for the given token.

impl<T, S> Spanned for Parenthesized<T, S>

fn span(&self) -> Span

Get the span of the type.

impl<T: ToTokens, S: ToTokens> ToTokens for Parenthesized<T, S>

fn to_tokens( &self, context: &mut MacroContext<'_, '_, '_>, stream: &mut TokenStream, ) -> Result<()>

Turn the current item into tokens.

impl<T, S> TryClone for Parenthesized<T, S>

where T: TryClone, S: TryClone,

fn try_clone(&self) -> Result<Self>

Try to clone the current value, raising an allocation error if it’s unsuccessful.

fn try_clone_from(&mut self, source: &Self) -> Result<(), Error>

Performs copy-assignment from source.

impl<T: Eq, S: Eq> Eq for Parenthesized<T, S>

impl<T, S> StructuralPartialEq for Parenthesized<T, S>