[−][src]Module rustc_middle::ty::subst

Structs

GenericArg	An entity in the Rust type system, which can be one of several kinds (types, lifetimes, and consts). To reduce memory usage, a `GenericArg` is a interned pointer, with the lowest 2 bits being reserved for a tag to indicate the type (`Ty`, `Region`, or `Const`) it points to.
SubstFolder
UserSelfTy	Specifies the user-given self type. In the case of a path that refers to a member in an inherent impl, this self type is sometimes needed to constrain the type parameters on the impl. For example, in this code:
UserSubsts	Stores the user-given substs to reach some fully qualified path (e.g., `<T>::Item` or `<T as Trait>::Item`).

InternalSubsts	A substitution mapping generic parameters to new values.
SubstsRef