rust/syn/meta.rs

32 /// #[tea(kind = "EarlGrey", hot)]
39 /// - `kind = "..."`
53 ///     let mut kind: Option<LitStr> = None;
57 ///         if meta.path.is_ident("kind") {
58 ///             kind = Some(meta.value()?.parse()?);
74 ///     eprintln!("kind={kind:?} hot={hot} with={with:?}");
88 /// 3 | #[tea(kind = "EarlGrey", with(sugar = "lol", milk))]
118 ///     kind: Option<LitStr>,
125 ///         if meta.path.is_ident("kind") {
126 ///             self.kind = Some(meta.value()?.parse()?);
185     ///     #[tea(kind = "EarlGrey")]
190     ///         if meta.path.is_ident("kind") {  // this parses the `kind`
295     ///     if meta.path.is_ident("kind") {
313     /// 3 | #[tea(kind = "EarlGrey", wat = "foo")]
327     ///     if meta.path.is_ident("kind") {
336     ///             _ => Err(meta.error("tea kind must be a string literal, path, or macro")),
347     /// error: tea kind must be a string literal, path, or macro
350     /// 3 | #[tea(kind = async { replicator.await })]
368     ///         _ => Err(Error::new_spanned(expr, "unsupported expression type for `kind`")),
374     /// error: unsupported expression type for `kind`
377     /// 3 | #[tea(kind = async { replicator.await })]