[][src]Enum syn::Meta

pub enum Meta {
    Word(Ident),
    List(MetaList),
    NameValue(MetaNameValue),
}

Content of a compile-time structured attribute.

This type is available if Syn is built with the "derive" or "full" feature.

Word

A meta word is like the test in #[test].

List

A meta list is like the derive(Copy) in #[derive(Copy)].

NameValue

A name-value meta is like the path = "..." in #[path = "sys/windows.rs"].

Syntax tree enum

This type is a syntax tree enum.

Variants

A structured list within an attribute, like derive(Copy, Clone).

This type is available if Syn is built with the "derive" or "full" feature.

A name-value pair within an attribute, like feature = "nightly".

This type is available if Syn is built with the "derive" or "full" feature.

Methods

impl Meta
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Returns the identifier that begins this structured meta item.

For example this would return the test in #[test], the derive in #[derive(Copy)], and the path in #[path = "sys/windows.rs"].

Trait Implementations

impl Parse for Meta
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impl Clone for Meta
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Performs copy-assignment from source. Read more

impl From<Ident> for Meta
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impl From<MetaList> for Meta
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impl From<MetaNameValue> for Meta
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impl From<Meta> for NestedMeta
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impl Eq for Meta
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impl PartialEq<Meta> for Meta
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impl Debug for Meta
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impl Hash for Meta
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Feeds a slice of this type into the given [Hasher]. Read more

impl ToTokens for Meta
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Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

impl !Send for Meta

impl !Sync for Meta

Blanket Implementations

impl<T> Spanned for T where
    T: ToTokens
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impl<T> From for T
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impl<T, U> Into for T where
    U: From<T>, 
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impl<T> ToOwned for T where
    T: Clone
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impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> BorrowMut for T where
    T: ?Sized
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impl<E> SpecializationError for E
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impl<T> Erased for T
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impl<T> Send for T where
    T: ?Sized
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impl<T> Sync for T where
    T: ?Sized
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impl<T> Erased for T