Enum `TokenTree`

pub enum TokenTree

A single token or a delimited sequence of token trees (e.g., [1, (), ..]).

Variants

Group(Group): A token stream surrounded by bracket delimiters.
Ident(Ident): An identifier.
Punct(Punct): A single punctuation character (+, ,, $, etc.).
Literal(Literal): A literal character ('a'), string ("hello"), number (2.3), etc.

Implementations

`impl TokenTree`

fn span(&self) -> Span

Returns the span of this tree, delegating to the span method of the contained token or a delimited stream.

fn set_span(&mut self, span: Span)

Configures the span for only this token.

Note that if this token is a Group then this method will not configure the span of each of the internal tokens, this will simply delegate to the set_span method of each variant.

Trait Implementations

`impl !Send for TokenTree`

`impl !Sync for TokenTree`

`impl Clone for TokenTree`

fn clone(&self) -> TokenTree

`impl Debug for TokenTree`

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

`impl Display for TokenTree`

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

`impl From<Group> for TokenTree`

fn from(g: Group) -> TokenTree

`impl From<Ident> for TokenTree`

fn from(g: Ident) -> TokenTree

`impl From<Literal> for TokenTree`

fn from(g: Literal) -> TokenTree

`impl From<Punct> for TokenTree`

fn from(g: Punct) -> TokenTree

`impl ToTokens for TokenTree`

fn to_tokens(&self, tokens: &mut TokenStream)
fn into_token_stream(self) -> TokenStream

Auto Trait Implementations

`impl Freeze for TokenTree`

`impl RefUnwindSafe for TokenTree`

`impl Unpin for TokenTree`

`impl UnsafeUnpin for TokenTree`

`impl UnwindSafe for TokenTree`

Blanket Implementations

`impl<T> Any for TokenTree where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for TokenTree where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for TokenTree where T: ?Sized,`

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

`impl<T> CloneToUninit for TokenTree where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for TokenTree`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> RepToTokensExt for TokenTree where T: ToTokens + ?Sized,`

`impl<T> SizeHint for TokenTree where T: ?Sized,`

fn lower_bound(&self) -> usize
fn upper_bound(&self) -> Option<usize>

`impl<T> SizedTypeProperties for TokenTree`

`impl<T> ToOwned for TokenTree where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T> ToString for TokenTree where T: Display + ?Sized,`

fn to_string(&self) -> String

`impl<T, U> Into<U> for TokenTree where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

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

`impl<T, U> TryFrom<U> for TokenTree where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto<U> for TokenTree where U: TryFrom<T>,`

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