Enum syn::WherePredicate

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

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)

Tuple Fields

0: PredicateType

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

Lifetime(PredicateLifetime)

Tuple Fields

0: PredicateLifetime

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

Eq(PredicateEq)

Tuple Fields

0: PredicateEq

An equality predicate in a where clause (unsupported).

Trait Implementations

impl Clone for WherePredicate

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl From<PredicateEq> for WherePredicate

fn from(e: PredicateEq) -> WherePredicate

Performs the conversion.

impl From<PredicateLifetime> for WherePredicate

fn from(e: PredicateLifetime) -> WherePredicate

Performs the conversion.

impl From<PredicateType> for WherePredicate

fn from(e: PredicateType) -> WherePredicate

Performs the conversion.

impl Parse for WherePredicate

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

impl ToTokens for WherePredicate

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

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object.