Struct rustc_middle::ty::Generics

pub struct Generics {
    pub parent: Option<DefId>,
    pub parent_count: usize,
    pub params: Vec<GenericParamDef>,
    pub param_def_id_to_index: FxHashMap<DefId, u32>,
    pub has_self: bool,
    pub has_late_bound_regions: Option<Span>,
}

Information about the formal type/lifetime parameters associated with an item or method. Analogous to hir::Generics.

The ordering of parameters is the same as in Subst (excluding child generics): Self (optionally), Lifetime params…, Type params…

Fields

parent: Option<DefId>

parent_count: usize

params: Vec<GenericParamDef>

param_def_id_to_index: FxHashMap<DefId, u32>

Reverse map to the index field of each GenericParamDef.

has_self: bool

has_late_bound_regions: Option<Span>

Implementations

impl<'tcx> Generics

pub fn count(&self) -> usize

pub fn own_counts(&self) -> GenericParamCount

pub fn own_defaults(&self) -> GenericParamCount

pub fn requires_monomorphization(&self, tcx: TyCtxt<'tcx>) -> bool

pub fn own_requires_monomorphization(&self) -> bool

pub fn param_at(
    &'tcx self,
    param_index: usize,
    tcx: TyCtxt<'tcx>
) -> &'tcx GenericParamDef

Returns the GenericParamDef with the given index.

pub fn region_param(
    &'tcx self,
    param: &EarlyBoundRegion,
    tcx: TyCtxt<'tcx>
) -> &'tcx GenericParamDef

Returns the GenericParamDef associated with this EarlyBoundRegion.

pub fn type_param(
    &'tcx self,
    param: &ParamTy,
    tcx: TyCtxt<'tcx>
) -> &'tcx GenericParamDef

Returns the GenericParamDef associated with this ParamTy.

pub fn const_param(
    &'tcx self,
    param: &ParamConst,
    tcx: TyCtxt<'tcx>
) -> &GenericParamDef

Returns the GenericParamDef associated with this ParamConst.

pub fn has_impl_trait(&'tcx self) -> bool

Returns true if params has impl Trait.

Trait Implementations

impl Clone for Generics

fn clone(&self) -> Generics

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Generics

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for Generics

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for Generics

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for Generics

fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)

Layout

Note: Most layout information is completely unstable and may be different between compiler versions and platforms. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 88 bytes