Struct derive_utils::EnumImpl

pub struct EnumImpl<'a> { /* fields omitted */ }

A builder for implementing a trait for enums.

Implementations

impl<'a> EnumImpl<'a>

pub fn new(data: &'a EnumData) -> Self

Constructs a new EnumImpl.

pub fn from_trait<I>(
    data: &'a EnumData,
    trait_path: Path,
    supertraits_types: I,
    trait_def: ItemTrait
) -> Result<Self> where
    I: IntoIterator<Item = Ident>,
    I::IntoIter: ExactSizeIterator, 

Constructs a new EnumImpl from a trait definition.

TraitItem::Method that has the first argument other than the following is error:

• &self
• &mut self
• self
• mut self
• self: Pin<&Self>
• self: Pin<&mut Self>

The following items are ignored:

• Generic associated types (GAT) (TraitItem::Method that has generics)
• TraitItem::Const
• TraitItem::Macro
• TraitItem::Verbatim

Panics

Panics if a trait method has a body.

pub fn set_trait(&mut self, path: Path)

pub fn push_generic_param(&mut self, param: GenericParam)

Appends a generic type parameter to the back of generics.

pub fn push_where_predicate(&mut self, predicate: WherePredicate)

Appends a predicate to the back of where-clause.

pub fn push_item(&mut self, item: ImplItem)

Appends an item to impl items.

pub fn push_method(&mut self, item: TraitItemMethod) -> Result<()>

Appends a method to impl items.

A method that has the first argument other than the following is error:

• &self
• &mut self
• self
• mut self
• self: Pin<&Self>
• self: Pin<&mut Self>

Panics

Panics if a trait method has a body.

pub fn append_items_from_trait(&mut self, trait_def: ItemTrait) -> Result<()>

Appends items from a trait definition to impl items.

See EnumImpl::from_trait for supported item types.

Panics

Panics if a trait method has a body.

pub fn build(self) -> TokenStream

pub fn build_impl(self) -> ItemImpl