Enum syn::punctuated::Pair

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

Expand description

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)`

Implementations

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

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pub fn into_value(self) -> T

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

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pub fn value(&self) -> &T

Borrows the syntax tree node from this punctuated pair.

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

Mutably borrows the syntax tree node from this punctuated pair.

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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.

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pub fn punct_mut(&mut self) -> Option<&mut P>

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

Example

punctuated.insert(0, parse_quote!('lifetime));
if let Some(punct) = punctuated.pairs_mut().next().unwrap().punct_mut() {
    punct.span = span;
}

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pub fn new(t: T, p: Option) -> Self

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

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

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

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

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pub fn cloned(self) -> Pair<T, P>where
T: Clone,
P: Clone,

Trait Implementations

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

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fn clone(&self) -> Self

Returns a copy of the value. Read more

1.0.0 · source

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P>where
P: Default,

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

Extends a collection with the contents of an iterator. Read more

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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements. Read more

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

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

Creates a value from an iterator. Read more

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

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

Write self to the given TokenStream. Read more

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fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more

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fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object. Read more

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

Auto Trait Implementations

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

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

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

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

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

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Spanned for Twhere
T: Spanned + ?Sized,

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fn span(&self) -> Span

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty. Read more

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impl<T> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Enum syn::punctuated::Pair

Variants

Punctuated(T, P)

End(T)

Implementations

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

pub fn into_value(self) -> T

pub fn value(&self) -> &T

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

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

pub fn punct_mut(&mut self) -> Option<&mut P>

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

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

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

pub fn cloned(self) -> Pair<T, P>where T: Clone, P: Clone,

Trait Implementations

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

fn clone(&self) -> Self

const fn clone_from(&mut self, source: &Self)

impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P>where P: Default,

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

fn extend_one(&mut self, item: A)

fn extend_reserve(&mut self, additional: usize)

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

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

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

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

fn to_token_stream(&self) -> TokenStream

fn into_token_stream(self) -> TokenStream

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

Auto Trait Implementations

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

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

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

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

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

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> Spanned for Twhere T: Spanned + ?Sized,

fn span(&self) -> Span

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

`Punctuated(T, P)`

`End(T)`

pub fn cloned(self) -> Pair<T, P>where
T: Clone,
P: Clone,

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

impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P>where
P: Default,

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

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

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

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

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

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

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

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> Spanned for Twhere
T: Spanned + ?Sized,

impl<T> ToOwned for Twhere
T: Clone,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,