Struct proc_macro::Group
1.29.0 · source · [−]pub struct Group(_);Expand description
A delimited token stream.
A Group internally contains a TokenStream which is surrounded by Delimiters.
Implementations
sourceimpl Group
impl Group
sourcepub fn new(delimiter: Delimiter, stream: TokenStream) -> Group
pub fn new(delimiter: Delimiter, stream: TokenStream) -> Group
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.
sourcepub fn stream(&self) -> TokenStream
pub fn stream(&self) -> TokenStream
Returns the TokenStream of tokens that are delimited in this Group.
Note that the returned token stream does not include the delimiter returned above.
sourcepub fn span(&self) -> Span
pub fn span(&self) -> Span
Returns the span for the delimiters of this token stream, spanning the
entire Group.
pub fn span(&self) -> Span {
^^^^^^^1.55.0 · sourcepub fn span_open(&self) -> Span
pub fn span_open(&self) -> Span
Returns the span pointing to the opening delimiter of this group.
pub fn span_open(&self) -> Span {
^1.55.0 · sourcepub fn span_close(&self) -> Span
pub fn span_close(&self) -> Span
Returns the span pointing to the closing delimiter of this group.
pub fn span_close(&self) -> Span {
^Trait Implementations
sourceimpl Display for Group
impl Display for Group
Prints the group as a string that should be losslessly convertible back
into the same group (modulo spans), except for possibly TokenTree::Groups
with Delimiter::None delimiters.
impl !Send for Group
impl !Sync for Group
Auto Trait Implementations
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more