compiler/rustc_middle/src/lib.rs

   1 //! The "main crate" of the Rust compiler. This crate contains common
   2 //! type definitions that are used by the other crates in the rustc
   3 //! "family". Some prominent examples (note that each of these modules
   4 //! has their own README with further details).
   5 //!
   6 //! - **HIR.** The "high-level (H) intermediate representation (IR)" is
   7 //!   defined in the `hir` module.
   8 //! - **MIR.** The "mid-level (M) intermediate representation (IR)" is
   9 //!   defined in the `mir` module. This module contains only the
  10 //!   *definition* of the MIR; the passes that transform and operate
  11 //!   on MIR are found in `rustc_const_eval` crate.
  12 //! - **Types.** The internal representation of types used in rustc is
  13 //!   defined in the `ty` module. This includes the **type context**
  14 //!   (or `tcx`), which is the central context during most of
  15 //!   compilation, containing the interners and other things.
  16 //!
  17 //! For more information about how rustc works, see the [rustc dev guide].
  18 //!
  19 //! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/
  20 //!
  21 //! # Note
  22 //!
  23 //! This API is completely unstable and subject to change.
  24
  25 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
  26 #![feature(allocator_api)]
  27 #![feature(array_windows)]
  28 #![feature(assert_matches)]
  29 #![feature(backtrace)]
  30 #![feature(box_patterns)]
  31 #![feature(core_intrinsics)]
  32 #![feature(discriminant_kind)]
  33 #![feature(exhaustive_patterns)]
  34 #![feature(get_mut_unchecked)]
  35 #![feature(generic_associated_types)]
  36 #![feature(if_let_guard)]
  37 #![feature(map_first_last)]
  38 #![feature(negative_impls)]
  39 #![feature(never_type)]
  40 #![feature(extern_types)]
  41 #![feature(new_uninit)]
  42 #![feature(once_cell)]
  43 #![feature(let_chains)]
  44 #![feature(let_else)]
  45 #![feature(min_specialization)]
  46 #![feature(trusted_len)]
  47 #![feature(type_alias_impl_trait)]
  48 #![feature(associated_type_bounds)]
  49 #![feature(rustc_attrs)]
  50 #![feature(half_open_range_patterns)]
  51 #![feature(control_flow_enum)]
  52 #![feature(associated_type_defaults)]
  53 #![feature(trusted_step)]
  54 #![feature(try_blocks)]
  55 #![feature(try_reserve_kind)]
  56 #![feature(nonzero_ops)]
  57 #![feature(unwrap_infallible)]
  58 #![feature(decl_macro)]
  59 #![feature(drain_filter)]
  60 #![feature(intra_doc_pointers)]
  61 #![feature(yeet_expr)]
  62 #![feature(const_option)]
  63 #![recursion_limit = "512"]
  64 #![allow(rustc::potential_query_instability)]
  65
  66 #[macro_use]
  67 extern crate bitflags;
  68 #[macro_use]
  69 extern crate rustc_macros;
  70 #[macro_use]
  71 extern crate rustc_data_structures;
  72 #[macro_use]
  73 extern crate tracing;
  74 #[macro_use]
  75 extern crate smallvec;
  76
  77 #[cfg(test)]
  78 mod tests;
  79
  80 #[macro_use]
  81 mod macros;
  82
  83 #[macro_use]
  84 pub mod query;
  85
  86 #[macro_use]
  87 pub mod arena;
  88 #[macro_use]
  89 pub mod dep_graph;
  90 pub mod hir;
  91 pub mod infer;
  92 pub mod lint;
  93 pub mod metadata;
  94 pub mod middle;
  95 pub mod mir;
  96 pub mod thir;
  97 pub mod traits;
  98 pub mod ty;
  99
 100 pub mod util {
 101     pub mod bug;
 102     pub mod common;
 103 }
 104
 105 // Allows macros to refer to this crate as `::rustc_middle`
 106 extern crate self as rustc_middle;