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