1.29.0[−][src]Struct proc_macro::Group
A delimited token stream.
A Group
internally contains a TokenStream
which is surrounded by Delimiter
s.
Methods
impl Group
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pub fn new(delimiter: Delimiter, stream: TokenStream) -> Group
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Creates a new Group
with the given delimiter and token stream.
This constructor will set the span for this group to
Span::call_site()
. To change the span you can use the set_span
method below.
pub fn delimiter(&self) -> Delimiter
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Returns the delimiter of this Group
pub fn stream(&self) -> TokenStream
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Returns the TokenStream
of tokens that are delimited in this Group
.
Note that the returned token stream does not include the delimiter returned above.
pub fn span(&self) -> Span
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Returns the span for the delimiters of this token stream, spanning the
entire Group
.
pub fn span(&self) -> Span {
^^^^^^^
pub fn span_open(&self) -> Span
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Returns the span pointing to the opening delimiter of this group.
pub fn span_open(&self) -> Span {
^
pub fn span_close(&self) -> Span
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Returns the span pointing to the closing delimiter of this group.
pub fn span_close(&self) -> Span {
^
pub fn set_span(&mut self, span: Span)
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Configures the span for this Group
's delimiters, but not its internal
tokens.
This method will not set the span of all the internal tokens spanned
by this group, but rather it will only set the span of the delimiter
tokens at the level of the Group
.
Trait Implementations
impl ToString for Group
1.15.0[src]
impl !Send for Group
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impl Clone for Group
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fn clone(&self) -> Group
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl !Sync for Group
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impl From<Group> for TokenTree
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impl Display for Group
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Prints the group as a string that should be losslessly convertible back
into the same group (modulo spans), except for possibly TokenTree::Group
s
with Delimiter::None
delimiters.
impl Debug for Group
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Blanket Implementations
impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
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.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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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.
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>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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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,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,