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

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

Borrows the syntax tree node from this punctuated pair.

Mutably borrows the syntax tree node from this punctuated pair.

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

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;
}

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

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

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

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

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

Extends a collection with exactly one element.

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

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

Creates a value from an iterator. Read more

Write self to the given TokenStream. Read more

Convert self directly into a TokenStream object. Read more

Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

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

The resulting type after obtaining ownership.

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

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.