compiler/rustc_query_impl/src/lib.rs

   1 //! Support for serializing the dep-graph and reloading it.
   2
   3 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
   4 // this shouldn't be necessary, but the check for `&mut _` is too naive and denies returning a function pointer that takes a mut ref
   5 #![feature(const_mut_refs)]
   6 #![feature(min_specialization)]
   7 #![feature(never_type)]
   8 #![feature(once_cell)]
   9 #![feature(rustc_attrs)]
  10 #![recursion_limit = "256"]
  11 #![allow(rustc::potential_query_instability)]
  12 #![deny(rustc::untranslatable_diagnostic)]
  13 #![deny(rustc::diagnostic_outside_of_impl)]
  14
  15 #[macro_use]
  16 extern crate rustc_macros;
  17 #[macro_use]
  18 extern crate rustc_middle;
  19
  20 use rustc_data_structures::sync::AtomicU64;
  21 use rustc_middle::arena::Arena;
  22 use rustc_middle::dep_graph::{self, DepKindStruct};
  23 use rustc_middle::ty::query::{query_keys, query_storage, query_stored, query_values};
  24 use rustc_middle::ty::query::{ExternProviders, Providers, QueryEngine};
  25 use rustc_middle::ty::{self, TyCtxt};
  26 use rustc_span::def_id::{LocalDefId, LOCAL_CRATE};
  27 use rustc_span::Span;
  28
  29 #[macro_use]
  30 mod plumbing;
  31 pub use plumbing::QueryCtxt;
  32 use rustc_query_system::query::*;
  33 #[cfg(parallel_compiler)]
  34 pub use rustc_query_system::query::{deadlock, QueryContext};
  35
  36 mod keys;
  37 use keys::Key;
  38
  39 pub use rustc_query_system::query::QueryConfig;
  40 pub(crate) use rustc_query_system::query::{QueryDescription, QueryVTable};
  41
  42 mod on_disk_cache;
  43 pub use on_disk_cache::OnDiskCache;
  44
  45 mod profiling_support;
  46 pub use self::profiling_support::alloc_self_profile_query_strings;
  47
  48 fn describe_as_module(def_id: LocalDefId, tcx: TyCtxt<'_>) -> String {
  49     if def_id.is_top_level_module() {
  50         "top-level module".to_string()
  51     } else {
  52         format!("module `{}`", tcx.def_path_str(def_id.to_def_id()))
  53     }
  54 }
  55
  56 rustc_query_append! { define_queries! }
  57
  58 impl<'tcx> Queries<'tcx> {
  59     // Force codegen in the dyn-trait transformation in this crate.
  60     pub fn as_dyn(&'tcx self) -> &'tcx dyn QueryEngine<'tcx> {
  61         self
  62     }
  63 }