Enum DiplomatStructAttribute

enum DiplomatStructAttribute {
    Out,
    Opaque,
    OpaqueMut,
}

Custom Diplomat attribute that can be placed on a struct definition.

Variants

Out

The #[diplomat::out] attribute, used for non-opaque structs that contain an owned opaque in the form of a Box.

Opaque

The #[diplomat::opaque] attribute, used for marking a struct as opaque. Note that opaque structs can be borrowed in return types, but cannot be passed into a function behind a mutable reference.

OpaqueMut

The #[diplomat::opaque_mut] attribute, used for marking a struct as opaque and mutable. Note that mutable opaque structs can never be borrowed in return types (even immutably!), but can be passed into a function behind a mutable reference.

Implementations

impl DiplomatStructAttribute

fn parse(attrs: &[Attribute]) -> Result<Option<Self>, Vec<Self>>

Parses a DiplomatStructAttribute from an array of syn::Attributes. If more than one kind is found, an error is returned containing all the ones encountered, since all the current attributes are disjoint.

Trait Implementations

impl Debug for DiplomatStructAttribute

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.