[−][src]Module rustc_middle::ty::context::tls

Structs

This is the implicit state of rustc. It contains the current TyCtxt and query. It is updated when creating a local interner or executing a new query. Whenever there's a TyCtxt value available you should also have access to an ImplicitCtxt through the functions in this module.

Constants

TLV	A thread local variable that stores a pointer to the current `ImplicitCtxt`.

Functions

enter_context	Sets `context` as the new current `ImplicitCtxt` for the duration of the function `f`.
get_tlv	Gets the pointer to the current `ImplicitCtxt`.
set_tlv	Sets TLV to `value` during the call to `f`. It is restored to its previous value after. This is used to set the pointer to the new `ImplicitCtxt`.
with	Allows access to the `TyCtxt` in the current `ImplicitCtxt`. Panics if there is no `ImplicitCtxt` available.
with_context	Allows access to the current `ImplicitCtxt`. Panics if there is no `ImplicitCtxt` available.
with_context_opt	Allows access to the current `ImplicitCtxt` in a closure if one is available.
with_opt	Allows access to the `TyCtxt` in the current `ImplicitCtxt`. The closure is passed None if there is no `ImplicitCtxt` available.
with_related_context	Allows access to the current `ImplicitCtxt` whose tcx field is the same as the tcx argument passed in. This means the closure is given an `ImplicitCtxt` with the same `'tcx` lifetime as the `TyCtxt` passed in. This will panic if you pass it a `TyCtxt` which is different from the current `ImplicitCtxt`'s `tcx` field.