Enum proc_macro2::TokenTree [−][src]
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
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pub fn span(&self) -> Span
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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)
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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 Clone for TokenTree
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impl Debug for TokenTree
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Prints token tree in a form convenient for debugging.
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::Group
s with Delimiter::None
delimiters and negative
numeric literals.
impl Extend<TokenTree> for TokenStream
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fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, streams: I)
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pub fn extend_one(&mut self, item: A)
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pub fn extend_reserve(&mut self, additional: usize)
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impl From<Group> for TokenTree
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impl From<Ident> for TokenTree
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impl From<Literal> for TokenTree
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impl From<Punct> for TokenTree
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impl From<TokenTree> for TokenStream
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impl FromIterator<TokenTree> for TokenStream
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Collects a number of token trees into a single stream.
fn from_iter<I: IntoIterator<Item = TokenTree>>(streams: I) -> Self
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Auto Trait Implementations
impl RefUnwindSafe for TokenTree
impl !Send for TokenTree
impl !Sync for TokenTree
impl Unpin for TokenTree
impl UnwindSafe for TokenTree
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,