20     /// - Outer attributes like `#[repr(transparent)]`. These appear outside or
23     /// - Inner attributes like `#![feature(proc_macro)]`. These appear inside
26     /// - Outer one-line doc comments like `/// Example`.
28     /// - Inner one-line doc comments like `//! Please file an issue`.
30     /// - Outer documentation blocks `/** Example */`.
32     /// - Inner documentation blocks `/*! Please file an issue */`.
42     /// - Meta::Path — attributes whose information content conveys just a
45     /// - Meta::List — attributes that carry arbitrary tokens after the
49     /// - Meta::NameValue — attributes with an `=` sign after the path,
58     /// #[derive(Copy, Clone)]
100     ///     fn parse(input: ParseStream) -> Result<Self> {
113     /// # Parsing from Attribute to structured arguments
142     ///      * Multi-line comments...
154     ///      * Multi-line comments...
178     pub fn path(&self) -> &Path {  in path()
214     pub fn parse_args<T: Parse>(&self) -> Result<T> {  in parse_args()
237     pub fn parse_args_with<F: Parser>(&self, parser: F) -> Result<F::Output> {  in parse_args_with()
261     /// conventional structure used by most of Rust's built-in attributes.
268     /// [syntax]: https://doc.rust-lang.org/reference/attributes.html#meta-item-attribute-syntax
335     /// In some cases, for attributes which have nested layers of structured
385         logic: impl FnMut(ParseNestedMeta) -> Result<()>,  in parse_nested_meta()
386     ) -> Result<()> {  in parse_nested_meta()
395     /// [*Parsing from tokens to Attribute*](#parsing-from-tokens-to-attribute).
398     pub fn parse_outer(input: ParseStream) -> Result<Vec<Self>> {  in parse_outer()
411     /// [*Parsing from tokens to Attribute*](#parsing-from-tokens-to-attribute).
414     pub fn parse_inner(input: ParseStream) -> Result<Vec<Self>> {  in parse_inner()
427     /// - `#[repr(transparent)]`
428     /// - `/// # Example`
429     /// - `/** Please file an issue */`
433     /// - `#![feature(proc_macro)]`
434     /// - `//! # Example`
435     /// - `/*! Please file an issue */`
444     /// Content of a compile-time structured attribute.
456     /// A name-value meta is like the `path = "..."` in `#[path =
463     /// [syntax tree enum]: Expr#syntax-tree-enums
468         /// A structured list within an attribute, like `derive(Copy, Clone)`.
471         /// A name-value pair within an attribute, like `feature = "nightly"`.
477     /// A structured list within an attribute, like `derive(Copy, Clone)`.
487     /// A name-value pair within an attribute, like `feature = "nightly"`.
497     /// Returns the path that begins this structured meta item.
501     pub fn path(&self) -> &Path {  in path()
512     pub fn require_path_only(&self) -> Result<&Path> {  in require_path_only()
524     pub fn require_list(&self) -> Result<&MetaList> {  in require_list()
542     pub fn require_name_value(&self) -> Result<&MetaNameValue> {  in require_name_value()
562     pub fn parse_args<T: Parse>(&self) -> Result<T> {  in parse_args()
569     pub fn parse_args_with<F: Parser>(&self, parser: F) -> Result<F::Output> {  in parse_args_with()
571         crate::parse::parse_scoped(parser, scope, self.tokens.clone())  in parse_args_with()
579         logic: impl FnMut(ParseNestedMeta) -> Result<()>,  in parse_nested_meta()
580     ) -> Result<()> {  in parse_nested_meta()
588     fn outer(self) -> Self::Ret;  in outer()
589     fn inner(self) -> Self::Ret;  in inner()
593     type Ret = iter::Filter<slice::Iter<'a, Attribute>, fn(&&Attribute) -> bool>;
595     fn outer(self) -> Self::Ret {  in outer()
596         fn is_outer(attr: &&Attribute) -> bool {  in outer()
605     fn inner(self) -> Self::Ret {  in inner()
606         fn is_inner(attr: &&Attribute) -> bool {  in inner()
623     pub(crate) fn parse_inner(input: ParseStream, attrs: &mut Vec<Attribute>) -> Result<()> {  in parse_inner()
630     pub(crate) fn single_parse_inner(input: ParseStream) -> Result<Attribute> {  in single_parse_inner()
640     pub(crate) fn single_parse_outer(input: ParseStream) -> Result<Attribute> {  in single_parse_outer()
652         fn parse(input: ParseStream) -> Result<Self> {  in parse()
660         fn parse(input: ParseStream) -> Result<Self> {  in parse()
668         fn parse(input: ParseStream) -> Result<Self> {  in parse()
674     pub(crate) fn parse_meta_after_path(path: Path, input: ParseStream) -> Result<Meta> {  in parse_meta_after_path()
684     fn parse_meta_list_after_path(path: Path, input: ParseStream) -> Result<MetaList> {  in parse_meta_list_after_path()
693     fn parse_meta_name_value_after_path(path: Path, input: ParseStream) -> Result<MetaNameValue> {  in parse_meta_name_value_after_path()
718         fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {  in fmt()
729         fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {  in fmt()
764             self.delimiter.surround(tokens, self.tokens.clone());  in to_tokens()