13 use crate::path::Path;
47     /// Every attribute has a `path` that indicates the intended interpretation
48     /// of the rest of the attribute's contents. The path and the optional
52     /// - Meta::Path — attributes whose information content conveys just a
53     ///   path, for example the `#[test]` attribute.
56     ///   path, surrounded by a delimiter (parenthesis, bracket, or brace). For
59     /// - Meta::NameValue — attributes with an `=` sign after the path,
60     ///   followed by a Rust expression. For example `#[path =
63     /// All doc comments are represented in the NameValue style with a path of
69     ///   ~~~~~~Path
72     /// #[path = "sys/windows.rs"]
73     ///   ~~~~Path
77     ///   ^^^^Meta::Path
100     /// //     #[path = "s.tmpl"]
128     /// TokenStream`. Macros are expected to check the `path` of the attribute,
184     /// Returns the path that identifies the interpretation of this attribute.
187     /// `#[derive(Copy)]`, and the `path` in `#[path = "sys/windows.rs"]`.
188     pub fn path(&self) -> &Path {  in path()  argument
189         self.meta.path()  in path()
216     /// if attr.path().is_ident("precondition") {
249             Meta::Path(path) => Err(crate::error::new2(  in parse_args_with()
250                 path.segments.first().unwrap().ident.span(),  in parse_args_with()
251                 path.segments.last().unwrap().ident.span(),  in parse_args_with()
255                     parsing::DisplayPath(path),  in parse_args_with()
263                     parsing::DisplayPath(&meta.path),  in parse_args_with()
298     ///     if attr.path().is_ident("repr") {
301     ///             if meta.path.is_ident("C") {
307     ///             if meta.path.is_ident("transparent") {
313     ///             if meta.path.is_ident("align") {
323     ///             if meta.path.is_ident("packed") {
364     ///     if attr.path().is_ident("repr") {
369     ///                 Meta::Path(path) if path.is_ident("C") => {
374     ///                 Meta::List(meta) if meta.path.is_ident("align") => {
456     /// ## Path
458     /// A meta path is like the `test` in `#[test]`.
466     /// A name-value meta is like the `path = "..."` in `#[path =
476         Path(Path),
490         pub path: Path,
500         pub path: Path,
507     /// Returns the path that begins this structured meta item.
510     /// `#[derive(Copy)]`, and the `path` in `#[path = "sys/windows.rs"]`.
511     pub fn path(&self) -> &Path {  in path()  argument
513             Meta::Path(path) => path,  in path()
514             Meta::List(meta) => &meta.path,  in path()
515             Meta::NameValue(meta) => &meta.path,  in path()
522     pub fn require_path_only(&self) -> Result<&Path> {  in require_path_only()  argument
524             Meta::Path(path) => return Ok(path),  in require_path_only()
531     /// Error if this is a `Meta::Path` or `Meta::NameValue`.
537             Meta::Path(path) => Err(crate::error::new2(  in require_list()
538                 path.segments.first().unwrap().ident.span(),  in require_list()
539                 path.segments.last().unwrap().ident.span(),  in require_list()
542                     parsing::DisplayPath(path),  in require_list()
549     /// Error if this is a `Meta::Path` or `Meta::List`.
555             Meta::Path(path) => Err(crate::error::new2(  in require_name_value()
556                 path.segments.first().unwrap().ident.span(),  in require_name_value()
557                 path.segments.last().unwrap().ident.span(),  in require_name_value()
560                     parsing::DisplayPath(path),  in require_name_value()
630 impl From<Path> for Meta {
631     fn from(meta: Path) -> Meta {  in from()
632         Meta::Path(meta)  in from()
656     use crate::path::Path;
691             let path = parse_outermost_meta_path(input)?;  in parse()  localVariable
692             parse_meta_after_path(path, input)  in parse()
699             let path = parse_outermost_meta_path(input)?;  in parse()  localVariable
700             parse_meta_list_after_path(path, input)  in parse()
707             let path = parse_outermost_meta_path(input)?;  in parse()  localVariable
708             parse_meta_name_value_after_path(path, input)  in parse()
712     // Unlike meta::parse_meta_path which accepts arbitrary keywords in the path,
713     // only the `unsafe` keyword is accepted as an attribute's outermost path.
714     fn parse_outermost_meta_path(input: ParseStream) -> Result<Path> {  in parse_outermost_meta_path()  argument
717             Ok(Path::from(Ident::new("unsafe", unsafe_token.span)))  in parse_outermost_meta_path()
719             Path::parse_mod_style(input)  in parse_outermost_meta_path()
723     pub(crate) fn parse_meta_after_path(path: Path, input: ParseStream) -> Result<Meta> {  in parse_meta_after_path()  argument
725             parse_meta_list_after_path(path, input).map(Meta::List)  in parse_meta_after_path()
727             parse_meta_name_value_after_path(path, input).map(Meta::NameValue)  in parse_meta_after_path()
729             Ok(Meta::Path(path))  in parse_meta_after_path()
733     fn parse_meta_list_after_path(path: Path, input: ParseStream) -> Result<MetaList> {  in parse_meta_list_after_path()  argument
736             path,  in parse_meta_list_after_path()
742     fn parse_meta_name_value_after_path(path: Path, input: ParseStream) -> Result<MetaNameValue> {  in parse_meta_name_value_after_path()  argument
758             path,  in parse_meta_name_value_after_path()
775     pub(super) struct DisplayPath<'a>(pub &'a Path);
793     use crate::path;
794     use crate::path::printing::PathStyle;
815                 Meta::Path(path) => path::printing::print_path(tokens, path, PathStyle::Mod),  in to_tokens()
825             path::printing::print_path(tokens, &self.path, PathStyle::Mod);  in to_tokens()
833             path::printing::print_path(tokens, &self.path, PathStyle::Mod);  in to_tokens()