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 #![feature(min_specialization)]
   5 #![feature(never_type)]
   6 #![feature(once_cell)]
   7 #![feature(rustc_attrs)]
   8 #![recursion_limit = "256"]
   9 #![allow(rustc::potential_query_instability)]
  10 #![deny(rustc::untranslatable_diagnostic)]
  11 #![deny(rustc::diagnostic_outside_of_impl)]
  12
  13 #[macro_use]
  14 extern crate rustc_macros;
  15 #[macro_use]
  16 extern crate rustc_middle;
  17
  18 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
  19 use rustc_data_structures::sync::AtomicU64;
  20 use rustc_middle::arena::Arena;
  21 use rustc_middle::dep_graph::{self, DepKindStruct, SerializedDepNodeIndex};
  22 use rustc_middle::ty::query::{query_keys, query_storage, query_stored, query_values};
  23 use rustc_middle::ty::query::{ExternProviders, Providers, QueryEngine};
  24 use rustc_middle::ty::{self, TyCtxt};
  25 use rustc_span::def_id::{LocalDefId, LOCAL_CRATE};
  26 use rustc_span::Span;
  27
  28 #[macro_use]
  29 mod plumbing;
  30 pub use plumbing::QueryCtxt;
  31 use rustc_query_system::query::*;
  32 #[cfg(parallel_compiler)]
  33 pub use rustc_query_system::query::{deadlock, QueryContext};
  34
  35 mod keys;
  36 use keys::Key;
  37
  38 mod values;
  39 use self::values::Value;
  40
  41 pub use rustc_query_system::query::QueryConfig;
  42 pub(crate) use rustc_query_system::query::{QueryDescription, QueryVTable};
  43
  44 mod on_disk_cache;
  45 pub use on_disk_cache::OnDiskCache;
  46
  47 mod profiling_support;
  48 pub use self::profiling_support::alloc_self_profile_query_strings;
  49
  50 fn describe_as_module(def_id: LocalDefId, tcx: TyCtxt<'_>) -> String {
  51     if def_id.is_top_level_module() {
  52         "top-level module".to_string()
  53     } else {
  54         format!("module `{}`", tcx.def_path_str(def_id.to_def_id()))
  55     }
  56 }
  57
  58 rustc_query_append! { [define_queries!][<'tcx>] }
  59
  60 impl<'tcx> Queries<'tcx> {
  61     // Force codegen in the dyn-trait transformation in this crate.
  62     pub fn as_dyn(&'tcx self) -> &'tcx dyn QueryEngine<'tcx> {
  63         self
  64     }
  65 }