[−][src]Module rustc_ap_rustc_span::def_id

Structs

CrateId
DefId	A `DefId` identifies a particular definition, by combining a crate index and a def index.
DefIndex	A DefIndex is an index into the hir-map for a crate, identifying a particular definition. It should really be considered an interned shorthand for a particular DefPath.
LocalDefId	A LocalDefId is equivalent to a DefId with `krate == LOCAL_CRATE`. Since we encode this information in the type, we can ensure at compile time that no DefIds from upstream crates get thrown into the mix. There are quite a few cases where we know that only DefIds from the local crate are expected and a DefId from a different crate would signify a bug somewhere. This is when LocalDefId comes in handy.

CRATE_DEF_INDEX	The crate root is always assigned index 0 by the AST Map code, thanks to `NodeCollector::new`.
LOCAL_CRATE	Item definitions in the currently-compiled crate would have the `CrateNum` `LOCAL_CRATE` in their `DefId`.

DefIdMap
DefIdSet