Enum syn::WherePredicate

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pub enum WherePredicate {
    Type(PredicateType),
    Lifetime(PredicateLifetime),
    Eq(PredicateEq),
}

Expand description

A single predicate in a where clause: T: Deserialize<'de>.

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

Syntax tree enum

This type is a syntax tree enum.

Variants

`Type(PredicateType)`

A type predicate in a where clause: for<'c> Foo<'c>: Trait<'c>.

`Lifetime(PredicateLifetime)`

A lifetime predicate in a where clause: 'a: 'b + 'c.

`Eq(PredicateEq)`

An equality predicate in a where clause (unsupported).

Trait Implementations

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impl Clone for WherePredicate

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fn clone(&self) -> Self

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl From<PredicateEq> for WherePredicate

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fn from(e: PredicateEq) -> WherePredicate

Performs the conversion.

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impl From<PredicateLifetime> for WherePredicate

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fn from(e: PredicateLifetime) -> WherePredicate

Performs the conversion.

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impl From<PredicateType> for WherePredicate

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fn from(e: PredicateType) -> WherePredicate

Performs the conversion.

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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) -> TokenStream

Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

impl RefUnwindSafe for WherePredicate

impl !Send for WherePredicate

impl !Sync for WherePredicate

impl Unpin for WherePredicate

impl UnwindSafe for WherePredicate

Blanket Implementations

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

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

pub 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

pub fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

pub 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 T where
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> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Enum syn::WherePredicate

Syntax tree enum

Variants

Type(PredicateType)

Lifetime(PredicateLifetime)

Eq(PredicateEq)

Trait Implementations

impl Clone for WherePredicate

fn clone(&self) -> Self

fn clone_from(&mut self, source: &Self)

impl From<PredicateEq> for WherePredicate

fn from(e: PredicateEq) -> WherePredicate

impl From<PredicateLifetime> for WherePredicate

fn from(e: PredicateLifetime) -> WherePredicate

impl From<PredicateType> for WherePredicate

fn from(e: PredicateType) -> WherePredicate

impl Parse for WherePredicate

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

impl ToTokens for WherePredicate

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

fn to_token_stream(&self) -> TokenStream

fn into_token_stream(self) -> TokenStream

Auto Trait Implementations

impl RefUnwindSafe for WherePredicate

impl !Send for WherePredicate

impl !Sync for WherePredicate

impl Unpin for WherePredicate

impl UnwindSafe for WherePredicate

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

fn span(&self) -> Span

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

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

type Error = Infallible

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

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

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

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

`Type(PredicateType)`

`Lifetime(PredicateLifetime)`

`Eq(PredicateEq)`

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

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

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

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

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

impl<T> ToOwned for T where
T: Clone,

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

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