Enum TypeParamBound

#[non_exhaustive]
pub enum TypeParamBound {
    Trait(TraitBound),
    Lifetime(Lifetime),
    PreciseCapture(PreciseCapture),
    Verbatim(TokenStream),
}

Available on crate features full or derive only.

A trait or lifetime used as a bound on a type parameter.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Trait(TraitBound)

Lifetime(Lifetime)

PreciseCapture(PreciseCapture)

Verbatim(TokenStream)

Trait Implementations

impl Clone for TypeParamBound

Available on crate feature clone-impls only.

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TypeParamBound

Available on crate feature extra-traits only.

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

Formats the value using the given formatter.

impl From<Lifetime> for TypeParamBound

fn from(e: Lifetime) -> TypeParamBound

Converts to this type from the input type.

impl From<PreciseCapture> for TypeParamBound

fn from(e: PreciseCapture) -> TypeParamBound

Converts to this type from the input type.

impl From<TraitBound> for TypeParamBound

fn from(e: TraitBound) -> TypeParamBound

Converts to this type from the input type.

impl Hash for TypeParamBound

Available on crate feature extra-traits only.

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

where H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Parse for TypeParamBound

Available on crate feature parsing only.

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

impl PartialEq for TypeParamBound

Available on crate feature extra-traits only.

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

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

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 ToTokens for TypeParamBound

Available on crate feature printing only.

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

where Self: Sized,

Convert self directly into a TokenStream object.

impl Eq for TypeParamBound

Available on crate feature extra-traits only.