1.29.0[][src]Enum proc_macro::TokenTree

pub enum TokenTree {
    Group(Group),
    Ident(Ident),
    Punct(Punct),
    Literal(Literal),
}

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.

Methods

impl TokenTree[src]

pub fn span(&self) -> Span[src]

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

pub fn set_span(&mut self, span: Span)[src]

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 From<TokenTree> for TokenStream[src]

Creates a token stream containing a single token tree.

impl From<Group> for TokenTree[src]

impl From<Ident> for TokenTree[src]

impl From<Punct> for TokenTree[src]

impl From<Literal> for TokenTree[src]

impl !Sync for TokenTree[src]

impl ToString for TokenTree1.15.0[src]

impl Extend<TokenTree> for TokenStream1.30.0[src]

impl Clone for TokenTree[src]

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl !Send for TokenTree[src]

impl Display for TokenTree[src]

Prints the token tree as a string that is supposed to be losslessly convertible back into the same token tree (modulo spans), except for possibly TokenTree::Groups with Delimiter::None delimiters and negative numeric literals.

impl Debug for TokenTree[src]

Prints token tree in a form convenient for debugging.

impl FromIterator<TokenTree> for TokenStream[src]

Collects a number of token trees into a single stream.

Auto Trait Implementations

impl Unpin for TokenTree

impl UnwindSafe for TokenTree

impl RefUnwindSafe for TokenTree

Blanket Implementations

impl<T> From<T> for T[src]

impl<T> ToString for T where
    T: Display + ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]