Struct syntax::ast::MetaItem

pub struct MetaItem {
    pub name: Name,
    pub node: MetaItemKind,
    pub span: Span,
}

🔬 This is a nightly-only experimental API. (rustc_private)

A spanned compile-time attribute item.

E.g. #[test], #[derive(..)] or #[feature = "foo"]

Fields

name: Name

🔬 This is a nightly-only experimental API. (rustc_private)

node: MetaItemKind

🔬 This is a nightly-only experimental API. (rustc_private)

span: Span

🔬 This is a nightly-only experimental API. (rustc_private)

Methods

impl MetaItem

fn name(&self) -> Name

🔬 This is a nightly-only experimental API. (rustc_private)

fn value_str(&self) -> Option<Symbol>

🔬 This is a nightly-only experimental API. (rustc_private)

fn meta_item_list(&self) -> Option<&[NestedMetaItem]>

🔬 This is a nightly-only experimental API. (rustc_private)

fn is_word(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn span(&self) -> Span

🔬 This is a nightly-only experimental API. (rustc_private)

fn check_name(&self, name: &str) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn is_value_str(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn is_meta_item_list(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

Trait Implementations

impl Clone for MetaItem

fn clone(&self) -> MetaItem

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq for MetaItem

fn eq(&self, __arg_0: &MetaItem) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &MetaItem) -> bool

This method tests for !=.

impl Eq for MetaItem

impl Encodable for MetaItem

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

deprecated in favor of rustc-serialize on crates.io

impl Decodable for MetaItem

fn decode<__D: Decoder>(__arg_0: &mut __D) -> Result<MetaItem, __D::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

deprecated in favor of rustc-serialize on crates.io

impl Hash for MetaItem

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher

Feeds a slice of this type into the state provided.

impl Debug for MetaItem

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl ToTokens for MetaItem

fn to_tokens(&self, _cx: &ExtCtxt) -> Vec<TokenTree>

🔬 This is a nightly-only experimental API. (rustc_private)