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 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>.

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

Lifetime(PredicateLifetime)

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

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

Eq(PredicateEq)

An equality predicate in a where clause (unsupported).

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

Trait Implementations

impl Parse for WherePredicate

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

impl Clone for WherePredicate

fn clone(&self) -> WherePredicate

Returns a copy of the value.

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

Performs copy-assignment from source.

impl From<PredicateType> for WherePredicate

fn from(e: PredicateType) -> WherePredicate

Performs the conversion.

impl From<PredicateLifetime> for WherePredicate

fn from(e: PredicateLifetime) -> WherePredicate

Performs the conversion.

impl From<PredicateEq> for WherePredicate

fn from(e: PredicateEq) -> WherePredicate

Performs the conversion.

impl PartialEq<WherePredicate> for WherePredicate

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for WherePredicate

impl Debug for WherePredicate

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

Formats the value using the given formatter.

impl Hash for WherePredicate

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl ToTokens for WherePredicate

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

Write self to the given TokenStream.

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object.