Trait darling_core::usage::UsesLifetimes

pub trait UsesLifetimes {
    fn uses_lifetimes<'a>(
        &self, 
        options: &Options, 
        lifetimes: &'a LifetimeSet
    ) -> LifetimeRefSet<'a>;

    fn uses_lifetimes_cloned(
        &self, 
        options: &Options, 
        lifetimes: &LifetimeSet
    ) -> LifetimeSet { ... }
}

Searcher for finding lifetimes in a syntax tree. This can be used to determine which lifetimes must be emitted in generated code.

Required methods

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

Returns the subset of the queried lifetimes that are used by the implementing syntax element.

This method only accounts for direct usage by the element; indirect usage via bounds or where predicates are not detected.

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Provided methods

fn uses_lifetimes_cloned(
    &self,
    options: &Options,
    lifetimes: &LifetimeSet
) -> LifetimeSet

Find all used lifetimes, then clone them and return that set.

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Implementations on Foreign Types

impl<T: UsesLifetimes> UsesLifetimes for Vec<T>

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl<T: UsesLifetimes, U> UsesLifetimes for Punctuated<T, U>

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl<T: UsesLifetimes> UsesLifetimes for Option<T>

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for Lifetime

fn uses_lifetimes<'a>(
    &self,
    _: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for AngleBracketedGenericArguments

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for BareFnArg

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for Binding

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for BoundLifetimes

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for Constraint

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for DataEnum

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for DataStruct

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for DataUnion

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for Field

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for FieldsNamed

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for LifetimeDef

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for ParenthesizedGenericArguments

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for Path

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for PathSegment

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for PredicateEq

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for PredicateLifetime

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for PredicateType

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for QSelf

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TraitBound

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeArray

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeBareFn

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeGroup

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeImplTrait

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeParen

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypePtr

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeReference

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeSlice

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeTuple

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for TypeTraitObject

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for Variant

fn uses_lifetimes<'gen>(
    &self,
    options: &Options,
    type_set: &'gen LifetimeSet
) -> LifetimeRefSet<'gen>

impl UsesLifetimes for Data

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for Type

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for Fields

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for TypePath

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for ReturnType

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for PathArguments

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for WherePredicate

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for GenericArgument

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl UsesLifetimes for TypeParamBound

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

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Implementors

impl UsesLifetimes for Ignored

fn uses_lifetimes<'a>(
    &self,
    _opts: &Options,
    _: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl<T: UsesLifetimes> UsesLifetimes for darling_core::ast::Fields<T>

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

impl<V: UsesLifetimes, F: UsesLifetimes> UsesLifetimes for darling_core::ast::Data<V, F>

fn uses_lifetimes<'a>(
    &self,
    options: &Options,
    lifetimes: &'a LifetimeSet
) -> LifetimeRefSet<'a>

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