Type Alias MacroExpanderResult

pub type MacroExpanderResult<'cx> = ExpandResult<Box<dyn MacResult + 'cx>, ()>;

Aliased Type

pub enum MacroExpanderResult<'cx> {
    Ready(Box<dyn MacResult + 'cx>),
    Retry(()),
}

Variants

Ready(Box<dyn MacResult + 'cx>)

Expansion produced a result (possibly dummy).

Retry(())

Expansion could not produce a result and needs to be retried.

Implementations

impl<'cx> MacroExpanderResult<'cx>

pub fn from_tts( cx: &'cx mut ExtCtxt<'_>, tts: TokenStream, site_span: Span, arm_span: Span, macro_ident: Ident, ) -> Self

Creates a MacroExpanderResult::Ready from a TokenStream.

The TokenStream is forwarded without any expansion.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.