Trait Group

pub trait Group: ProcMacro<Group = Self> + Display {
    // Required methods
    fn new(delimiter: Self::Delimiter, stream: Self::TokenStream) -> Self;
    fn delimiter(&self) -> Self::Delimiter;
    fn stream(&self) -> Self::TokenStream;
    fn span(&self) -> Self::Span;
    fn span_open(&self) -> Self::Span;
    fn span_close(&self) -> Self::Span;
    fn set_span(&mut self, span: Self::Span);
}

Group API trait. See proc_macro::Group.

This trait is implemented for Group in proc_macro and proc_macro2 if the corresponding feature is enabled.

See also GroupExt.

Required Methods

fn new(delimiter: Self::Delimiter, stream: Self::TokenStream) -> Self

Create a new Group. The span will be set to Span::call_site().

fn delimiter(&self) -> Self::Delimiter

Get the delimiter of this Group.

fn stream(&self) -> Self::TokenStream

Get the punctuated TokenStream, not including delimiters.

fn span(&self) -> Self::Span

Get the span of this Group.

fn span_open(&self) -> Self::Span

Get the span of the group’s opening delimiter.

fn span_close(&self) -> Self::Span

Get the span of the group’s closing delimiter.

fn set_span(&mut self, span: Self::Span)

Set the span of this Group. This does not set the span of the contained TokenStream.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Group for Group

Available on crate feature proc-macro only.

fn new(delimiter: Self::Delimiter, stream: Self::TokenStream) -> Self

fn delimiter(&self) -> Self::Delimiter

fn stream(&self) -> Self::TokenStream

fn span(&self) -> Self::Span

fn span_open(&self) -> Self::Span

fn span_close(&self) -> Self::Span

fn set_span(&mut self, span: Self::Span)

impl Group for Group

Available on crate feature proc-macro2 only.

fn new(delimiter: Self::Delimiter, stream: Self::TokenStream) -> Self

fn delimiter(&self) -> Self::Delimiter

fn stream(&self) -> Self::TokenStream

fn span(&self) -> Self::Span

fn span_open(&self) -> Self::Span

fn span_close(&self) -> Self::Span

fn set_span(&mut self, span: Self::Span)

Implementors