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

A token stream surrounded by bracket delimiters.

An identifier.

A single punctuation character (+, ,, $, etc.).

A literal character ('a'), string ("hello"), number (2.3), etc.

Methods

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

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 !Sync for TokenTree
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impl ToString for TokenTree
1.15.0
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impl From<TokenTree> for TokenStream
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Creates a token stream containing a single token tree.

impl From<Group> for TokenTree
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impl From<Ident> for TokenTree
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impl From<Punct> for TokenTree
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impl From<Literal> for TokenTree
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impl !Send for TokenTree
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impl Clone for TokenTree
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Performs copy-assignment from source. Read more

impl Extend<TokenTree> for TokenStream
1.30.0
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impl Display for TokenTree
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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
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Prints token tree in a form convenient for debugging.

impl FromIterator<TokenTree> for TokenStream
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Collects a number of token trees into a single stream.

Blanket Implementations

impl<T, U> Into for T where
    U: From<T>, 
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impl<T> ToString for T where
    T: Display + ?Sized
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impl<T> ToOwned for T where
    T: Clone
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impl<T> From for T
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impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl<T> BorrowMut for T where
    T: ?Sized
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