Struct rustc::hir::def_id::DefId

pub struct DefId {
    pub krate: CrateNum,
    pub index: DefIndex,
}

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A DefId identifies a particular definition, by combining a crate index and a def index.

Fields

krate: CrateNum

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index: DefIndex

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Methods

impl DefId

pub fn to_dep_node(self, tcx: TyCtxt, kind: DepKind) -> DepNode

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impl DefId

pub fn local(index: DefIndex) -> DefId

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Make a local DefId with the given index.

pub fn is_local(self) -> bool

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pub fn to_local(self) -> LocalDefId

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Trait Implementations

impl<'a, 'gcx: 'tcx + 'a, 'tcx: 'a> DepNodeParams<'a, 'gcx, 'tcx> for DefId

const CAN_RECONSTRUCT_QUERY_KEY: bool

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CAN_RECONSTRUCT_QUERY_KEY: bool = true

fn to_fingerprint(&self, tcx: TyCtxt) -> Fingerprint

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This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don't need to if the corresponding DepNode is anonymous).

fn to_debug_str(&self, tcx: TyCtxt<'a, 'gcx, 'tcx>) -> String

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impl DepGraphSafe for DefId

A DefId on its own doesn't give access to any particular state. You must fetch the state from the various maps or generate on-demand queries, all of which create reads.

impl Clone for DefId

fn clone(&self) -> DefId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Eq for DefId

fn assert_receiver_is_total_eq(&self)

impl Ord for DefId

fn cmp(&self, other: &DefId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl PartialOrd for DefId

fn partial_cmp(&self, other: &DefId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &DefId) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &DefId) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &DefId) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &DefId) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialEq for DefId

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

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

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

This method tests for !=.

impl Hash for DefId

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 Copy for DefId

impl Debug for DefId

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

Formats the value using the given formatter.

impl UseSpecializedEncodable for DefId

fn default_encode<E>(&self, &mut E) -> Result<(), <E as Encoder>::Error> where     E: Encoder,

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Defaults to returning an error (see SpecializationError).

impl UseSpecializedDecodable for DefId

fn default_decode<D>(&mut D) -> Result<Self, <D as Decoder>::Error> where     D: Decoder,

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Defaults to returning an error (see SpecializationError).

impl<'a> HashStable<StableHashingContext<'a>> for DefId

fn hash_stable<W: StableHasherResult>(     &self,     hcx: &mut StableHashingContext<'a>,     hasher: &mut StableHasher<W> )

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impl<'a> ToStableHashKey<StableHashingContext<'a>> for DefId

type KeyType = DefPathHash

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fn to_stable_hash_key(&self, hcx: &StableHashingContext<'a>) -> DefPathHash

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impl Key for DefId

fn map_crate(&self) -> CrateNum

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Given an instance of this key, what crate is it referring to? This is used to find the provider.

fn default_span(&self, tcx: TyCtxt) -> Span

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In the event that a cycle occurs, if no explicit span has been given for a query with key self, what span should we use?

impl<'a, 'tcx, 'x> SpecializedDecoder<DefId> for CacheDecoder<'a, 'tcx, 'x>

fn specialized_decode(&mut self) -> Result<DefId, Self::Error>

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Decode a value in a manner specific to this decoder state.

impl<'enc, 'a, 'tcx, E> SpecializedEncoder<DefId> for CacheEncoder<'enc, 'a, 'tcx, E> where     E: 'enc + TyEncoder,

fn specialized_encode(&mut self, id: &DefId) -> Result<(), Self::Error>

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Encode the value in a manner specific to this encoder state.

impl<'tcx> TypeFoldable<'tcx> for DefId

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(     &self,     _: &mut F ) -> DefId

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fn super_visit_with<F: TypeVisitor<'tcx>>(&self, _: &mut F) -> bool

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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(     &self,     folder: &mut F ) -> Self

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_escaping_depth(&self, depth: u32) -> bool

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fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn has_skol(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_free_regions(&self) -> bool

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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound.

fn has_erasable_regions(&self) -> bool

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True if there any any un-erased free regions.

fn is_global(&self) -> bool

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Errs on the side of returning false.

impl<'tcx> Lift<'tcx> for DefId

type Lifted = Self

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fn lift_to_tcx<'a, 'gcx>(&self, _: TyCtxt<'a, 'gcx, 'tcx>) -> Option<Self>

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