Function rustc_expand::mbe::quoted::parse_kleene_op

source · 
fn parse_kleene_op(
    input: &mut impl Iterator<Item = TokenTree>,
    span: Span
) -> Result<Result<(KleeneOp, Span), Token>, Span>
Expand description

Parse the next token tree of the input looking for a KleeneOp. Returns

  • Ok(Ok((op, span))) if the next token tree is a KleeneOp
  • Ok(Err(tok, span)) if the next token tree is a token but not a KleeneOp
  • Err(span) if the next token tree is not a token