Enum syn::TraitBoundModifier

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pub enum TraitBoundModifier {
    None,
    Maybe(Question),
}

Expand description

A modifier on a trait bound, currently only used for the ? in ?Sized.

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

Variants

`None`

`Maybe(Question)`

Trait Implementations

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

Write self to the given TokenStream. Read more

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fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more

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fn into_token_stream(self) -> TokenStreamwhere
Self: Sized,

Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

impl RefUnwindSafe for TraitBoundModifier

impl !Send for TraitBoundModifier

impl !Sync for TraitBoundModifier

impl Unpin for TraitBoundModifier

impl UnwindSafe for TraitBoundModifier

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

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

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

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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. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Enum syn::TraitBoundModifier

Variants

`None`

`Maybe(Question)`

Trait Implementations

impl Parse for TraitBoundModifier

fn parse(input: ParseStream<'_>) -> Result<Self>

impl ToTokens for TraitBoundModifier

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

fn to_token_stream(&self) -> TokenStream

fn into_token_stream(self) -> TokenStreamwhere
Self: Sized,

Auto Trait Implementations

impl RefUnwindSafe for TraitBoundModifier

impl !Send for TraitBoundModifier

impl !Sync for TraitBoundModifier

impl Unpin for TraitBoundModifier

impl UnwindSafe for TraitBoundModifier

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

fn span(&self) -> Span

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

type Error = Infallible

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

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

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

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

Enum syn::TraitBoundModifier

Variants

None

Maybe(Question)

Trait Implementations

impl Parse for TraitBoundModifier

fn parse(input: ParseStream<'_>) -> Result<Self>

impl ToTokens for TraitBoundModifier

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

fn to_token_stream(&self) -> TokenStream

fn into_token_stream(self) -> TokenStreamwhere Self: Sized,

Auto Trait Implementations

impl RefUnwindSafe for TraitBoundModifier

impl !Send for TraitBoundModifier

impl !Sync for TraitBoundModifier

impl Unpin for TraitBoundModifier

impl UnwindSafe for TraitBoundModifier

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

fn span(&self) -> Span

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

type Error = Infallible

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

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

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

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

`None`

`Maybe(Question)`

fn into_token_stream(self) -> TokenStreamwhere
Self: Sized,

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

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

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

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

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

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

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