Crate rustc_type_ir
source · [−]Re-exports
Modules
Structs
A De Bruijn index is a standard means of representing
regions (and perhaps later types) in a higher-ranked setting. In
particular, imagine a type like this:
An floating-point (
f32 or f64) type variable ID.An integral (
u32, i32, usize, etc.) type variable ID.A type variable ID.
Flags that we track on types. These flags are propagated upwards
through the type during type construction, so that we can quickly check
whether the type has various kinds of types in it without recursing
over the type itself.
“Universes” are used during type- and trait-checking in the
presence of
for<..> binders to control what sets of names are
visible. Universes are arranged into a tree: the root universe
contains names that are always visible. Each child then adds a new
set of names that are visible, in addition to those of its parent.
We say that the child universe “extends” the parent universe with
new names.Enums
Constants
Traits
Needed so we can use #[derive(HashStable_Generic)]