Module rustc_interface::callbacks
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Throughout the compiler tree, there are several places which want to have
access to state or queries while being inside crates that are dependencies
of rustc_middle. To facilitate this, we have the
rustc_data_structures::AtomicRef type, which allows us to setup a global
static which can then be set in this file at program startup.
See SPAN_TRACK for an example of how to set things up.
The functions in this file should fall back to the default set in their
origin crate when the TyCtxt is not present in TLS.
Functions
This is a callback from
rustc_hir as it cannot access the implicit state
in rustc_middle otherwise.Sets up the callbacks in prior crates which we want to refer to the
TyCtxt in.
This is a callback from
rustc_ast as it cannot access the implicit state
in rustc_middle otherwise. It is used when diagnostic messages are
emitted and stores them in the current query, if there is one.