Enum full_moon::ast::punctuated::Pair

pub enum Pair<'a, T> {
    End(T),
    Punctuated(T, TokenReference<'a>),
}

A node T followed by the possible trailing TokenReference. Refer to the module documentation for more details.

Variants

End(T)

A node T with no trailing punctuation

Punctuated(T, TokenReference<'a>)

A node T followed by punctuation (in the form of a TokenReference)

Methods

impl<'a, T> Pair<'a, T>

pub fn new(value: T, punctuation: Option<TokenReference<'a>>) -> Self

Creates a Pair with node T and optional punctuation

let pair = Pair::new(1, None);

pub fn into_tuple(self) -> (T, Option<TokenReference<'a>>)

Takes the Pair and returns the node T and the punctuation, if it exists as a tuple

let pair = Pair::new(1, None);
assert_eq!(pair.into_tuple(), (1, None));

pub fn into_value(self) -> T

Takes the Pair and returns the node T

let pair = Pair::new(1, None);
assert_eq!(pair.into_value(), 1);

pub fn value(&self) -> &T

Returns a reference to the node T

let pair = Pair::new(1, None);
assert_eq!(pair.value(), &1);

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

Returns a mutable reference to the node T

let mut pair = Pair::new(1, None);
*pair.value_mut() += 1;
assert_eq!(pair.into_value(), 2);

pub fn punctuation(&self) -> Option<&TokenReference<'a>>

Returns the trailing punctuation, if it exists

let pair = Pair::new(1, None);
assert_eq!(pair.punctuation(), None);

pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Pair<'a, U>

Maps a Pair<'a, T> to a Pair<'a, U> by applying a function to the value of the pair, while preserving punctuation if it is not the end.

let pair = Pair::new(2, None);
assert_eq!(*pair.map(|i| i * 2).value(), 4);

Trait Implementations

impl<'a, T: Clone> Clone for Pair<'a, T>

fn clone(&self) -> Pair<'a, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug> Debug for Pair<'a, T>

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

Formats the value using the given formatter.

impl<'de: 'a, 'a, T> Deserialize<'de> for Pair<'a, T> where
    T: Deserialize<'de>, 

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<'a, T> Extend<Pair<'a, T>> for Punctuated<'a, T>

fn extend<I: IntoIterator<Item = Pair<'a, T>>>(&mut self, iter: I)

Extends a collection with the contents of an iterator.

impl<'a, T: Node> Node for Pair<'a, T>

fn start_position(&self) -> Option<Position>

The start position of a node. None if can't be determined

fn end_position(&self) -> Option<Position>

The end position of a node. None if it can't be determined

fn similar(&self, other: &Self) -> bool

Whether another node of the same type is the same as this one semantically, ignoring position

fn range(&self) -> Option<(Position, Position)>

The full range of a node, if it has both start and end positions

fn surrounding_ignore_tokens<'ast, 'b>(
    &self,
    ast: &'b Ast<'ast>
) -> Option<(Vec<&'b Token<'ast>>, Vec<&'b Token<'ast>>)>

The tokens surrounding a node that are ignored and not accessible through the node's own accessors. Use this if you want to get surrounding comments or whitespace. Return value is None if a token doesn't have both a start and end position. Otherwise, it is a tuple of two token vectors, first being the preceding and the second being the following.

impl<'_, T> Owned for Pair<'_, T> where
    T: Owned, 

type Owned = Pair<'static, <T as Owned>::Owned>

What an owned version of the object looks like. Usually contains a 'static lifetime.

fn owned(&self) -> Self::Owned

Returns an owned version of the object.

impl<'a, T: PartialEq> PartialEq<Pair<'a, T>> for Pair<'a, T>

fn eq(&self, other: &Pair<'a, T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Pair<'a, T>) -> bool

This method tests for !=.

impl<'a, T> Serialize for Pair<'a, T> where
    T: Serialize, 

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'a, T> StructuralPartialEq for Pair<'a, T>