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(bool_to_option)]
  31 #![feature(box_patterns)]
  32 #![feature(core_intrinsics)]
  33 #![feature(derive_default_enum)]
  34 #![feature(discriminant_kind)]
  35 #![feature(exhaustive_patterns)]
  36 #![feature(if_let_guard)]
  37 #![feature(map_first_last)]
  38 #![feature(never_type)]
  39 #![feature(extern_types)]
  40 #![feature(new_uninit)]
  41 #![feature(nll)]
  42 #![feature(once_cell)]
  43 #![feature(let_else)]
  44 #![feature(min_specialization)]
  45 #![feature(trusted_len)]
  46 #![feature(in_band_lifetimes)]
  47 #![feature(crate_visibility_modifier)]
  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(iter_zip)]
  54 #![feature(thread_local_const_init)]
  55 #![feature(trusted_step)]
  56 #![feature(try_blocks)]
  57 #![feature(try_reserve_kind)]
  58 #![feature(nonzero_ops)]
  59 #![recursion_limit = "512"]
  60
  61 #[macro_use]
  62 extern crate bitflags;
  63 #[macro_use]
  64 extern crate rustc_macros;
  65 #[macro_use]
  66 extern crate rustc_data_structures;
  67 #[macro_use]
  68 extern crate tracing;
  69 #[macro_use]
  70 extern crate smallvec;
  71
  72 #[cfg(test)]
  73 mod tests;
  74
  75 #[macro_use]
  76 mod macros;
  77
  78 #[macro_use]
  79 pub mod query;
  80
  81 #[macro_use]
  82 pub mod arena;
  83 #[macro_use]
  84 pub mod dep_graph;
  85 pub mod hir;
  86 pub mod infer;
  87 pub mod lint;
  88 pub mod middle;
  89 pub mod mir;
  90 pub mod thir;
  91 pub mod traits;
  92 pub mod ty;
  93
  94 pub mod util {
  95     pub mod bug;
  96     pub mod common;
  97 }
  98
  99 // Allows macros to refer to this crate as `::rustc_middle`
 100 extern crate self as rustc_middle;