proc_macro_assertions::maybe_borrowed

Enum MaybeBorrowed

pub enum MaybeBorrowed<'a, T> {
    Borrowed(&'a T),
    Owned(T),
}

Expand description

Some type that is eiher borrowed or owned

Variants§

Borrowed(&'a T)

Some borrowed type

Owned(T)

Some owned type

Implementations§

impl<'a, T> MaybeBorrowed<'a, T>

pub const fn is_borrowed(&self) -> bool

Check if Self contains a borrowed type Inverse of MaybeBorrowed::is_owned.

pub const fn is_owned(&self) -> bool

Check if Self contains a owned type. Inverse of MaybeBorrowed::is_borrowed.

Trait Implementations§

impl<'a, Gen> AttachGenerics<'a> for MaybeBorrowed<'a, Gen>

type Output = MaybeBorrowed<'a, Gen>

An optional type wrapper around the type the generics will be attached to Used by this crate to wrap types with MaybeBorrowed to allow both references and owned types to be represented by the same type.

fn with_optional_generics<G>( self, generics: Option<G>, ) -> WithGenerics<'a, Self::Output>
where G: Into<MaybeBorrowed<'a, Generics>>,

fn with_generics<G>(self, generics: G) -> WithGenerics<'a, Self::Output>
where G: Into<MaybeBorrowed<'a, Generics>>, Self: Sized,

Attach some generics G to Self. This allows for the generics to to not exactly be syn::Generics but any type that can be turned into MaybeBorrowed<syn::Generics>. This allows for both &syn::Generics and syn::Generics to be attached using the same trait.

impl<'a, T: Debug> Debug for MaybeBorrowed<'a, T>

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

Formats the value using the given formatter. Read more

impl<'a, T> Deref for MaybeBorrowed<'a, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, T> From<&'a T> for MaybeBorrowed<'a, T>

fn from(value: &'a T) -> Self

Converts to this type from the input type.

impl<'a, U> From<&'a U> for MaybeBorrowed<'a, StaticTid<TokenCmpWrapper<U>>>
where U: ToTokens,

fn from(value: &'a U) -> Self

Converts to this type from the input type.

impl<'a, U> From<&'a U> for MaybeBorrowed<'a, StaticTid<U>>

fn from(value: &'a U) -> Self

Converts to this type from the input type.

impl<'a, U> From<&'a U> for MaybeBorrowed<'a, TokenCmpWrapper<StaticTid<U>>>
where U: ToTokens,

fn from(value: &'a U) -> Self

Converts to this type from the input type.

impl<'a, U> From<&'a U> for MaybeBorrowed<'a, TokenCmpWrapper<U>>
where U: ToTokens,

fn from(value: &'a U) -> Self

Converts to this type from the input type.

impl<'a, T> From<T> for MaybeBorrowed<'a, StaticTid<T>>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<'a, T> From<T> for MaybeBorrowed<'a, T>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<'a, T> From<T> for MaybeBorrowed<'a, TokenCmpWrapper<T>>
where T: ToTokens,

fn from(value: T) -> Self

Converts to this type from the input type.

impl<'a, U> From<U> for MaybeBorrowed<'a, StaticTid<TokenCmpWrapper<U>>>
where U: ToTokens,

fn from(value: U) -> Self

Converts to this type from the input type.

impl<'a, U> From<U> for MaybeBorrowed<'a, TokenCmpWrapper<StaticTid<U>>>
where U: ToTokens,

fn from(value: U) -> Self

Converts to this type from the input type.

impl<'a, T> Hash for MaybeBorrowed<'a, T>
where T: Hash,

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more

1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more

impl<'a, T> Ord for MaybeBorrowed<'a, T>
where T: Ord,

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more

1.21.0 · Source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more

1.21.0 · Source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more

1.50.0 · Source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more

impl<'a, T> PartialEq for MaybeBorrowed<'a, T>
where T: PartialEq,

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, T> PartialOrd for MaybeBorrowed<'a, T>
where T: PartialOrd,

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more

1.0.0 · Source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more

1.0.0 · Source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0 · Source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more

1.0.0 · Source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl<'a, T> ToTokens for MaybeBorrowed<'a, T>
where T: ToTokens,

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream. Read more

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more

fn into_token_stream(self) -> TokenStream
where Self: Sized,

Convert self directly into a TokenStream object. Read more

impl<'a, T> Eq for MaybeBorrowed<'a, T>
where T: Eq,

impl<'a, T> TidAble<'a> for MaybeBorrowed<'a, T>
where T: TidAble<'a>,

Auto Trait Implementations§

impl<'a, T> Freeze for MaybeBorrowed<'a, T>
where T: Freeze,

impl<'a, T> RefUnwindSafe for MaybeBorrowed<'a, T>
where T: RefUnwindSafe,

impl<'a, T> Send for MaybeBorrowed<'a, T>
where T: Send + Sync,

impl<'a, T> Sync for MaybeBorrowed<'a, T>
where T: Sync,

impl<'a, T> Unpin for MaybeBorrowed<'a, T>
where T: Unpin,

impl<'a, T> UnwindSafe for MaybeBorrowed<'a, T>
where T: UnwindSafe + RefUnwindSafe,

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AnyExt for T
where T: Any + ?Sized,

fn downcast_ref<T>(this: &Self) -> Option<&T>
where T: Any,

Attempts to downcast this to T behind reference

fn downcast_mut<T>(this: &mut Self) -> Option<&mut T>
where T: Any,

Attempts to downcast this to T behind mutable reference

fn downcast_rc<T>(this: Rc<Self>) -> Result<Rc<T>, Rc<Self>>
where T: Any,

Attempts to downcast this to T behind Rc pointer

fn downcast_arc<T>(this: Arc<Self>) -> Result<Arc<T>, Arc<Self>>
where T: Any,

Attempts to downcast this to T behind Arc pointer

fn downcast_box<T>(this: Box<Self>) -> Result<Box<T>, Box<Self>>
where T: Any,

Attempts to downcast this to T behind Box pointer

fn downcast_move<T>(this: Self) -> Option<T>
where T: Any, Self: Sized,

Attempts to downcast owned Self to T, useful only in generic context as a workaround for specialization

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<!> for T

fn from(t: !) -> T

Converts to this type from the input type.

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

type Target = T

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

The target type on which the method may be called.

impl<'a, T, U> ResolveBounds<'a, T> for U
where T: AssertableWithBounds<'a, U> + 'a,

fn resolve_for( self, assertable: impl Into<MaybeBorrowed<'a, T>>, ) -> ResolvedBounds<'a, U, T>

impl<T> Spanned for T
where T: Spanned + ?Sized,

fn span(&self) -> Span

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty.

impl<'a, T> Tid<'a> for T
where T: TidAble<'a> + ?Sized,

fn self_id(&self) -> TypeId

Returns type id of the type of self Read more

fn id() -> TypeId

Returns type id of this type

impl<'a, X> TidExt<'a> for X
where X: Tid<'a> + ?Sized,

fn is<T>(&self) -> bool
where T: Tid<'a>,

Returns true if type behind self is equal to the type of T.

fn downcast_ref<'b, T>(&'b self) -> Option<&'b T>
where T: Tid<'a>,

Attempts to downcast self to T behind reference

fn downcast_mut<'b, T>(&'b mut self) -> Option<&'b mut T>
where T: Tid<'a>,

Attempts to downcast self to T behind mutable reference

fn downcast_rc<T>(self: Rc<Self>) -> Result<Rc<T>, Rc<Self>>
where T: Tid<'a>,

Attempts to downcast self to T behind Rc pointer

fn downcast_arc<T>(self: Arc<Self>) -> Result<Arc<T>, Arc<Self>>
where T: Tid<'a>,

Attempts to downcast self to T behind Arc pointer

fn downcast_box<T>(self: Box<Self>) -> Result<Box<T>, Box<Self>>
where T: Tid<'a>,

Attempts to downcast self to T behind Box pointer

fn downcast_move<T>(self) -> Option<T>
where T: Tid<'a>, Self: Sized,

Attempts to downcast owned Self to T, useful only in generic context as a workaround for specialization

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> TypeEq for T
where T: ?Sized,

type This = T