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//! The "main crate" of the Rust compiler. This crate contains common
//! type definitions that are used by the other crates in the rustc
//! "family". Some prominent examples (note that each of these modules
//! has their own README with further details).
//!
//! - **HIR.** The "high-level (H) intermediate representation (IR)" is
//! defined in the `hir` module.
//! - **MIR.** The "mid-level (M) intermediate representation (IR)" is
//! defined in the `mir` module. This module contains only the
//! *definition* of the MIR; the passes that transform and operate
//! on MIR are found in `librustc_mir` crate.
//! - **Types.** The internal representation of types used in rustc is
//! defined in the `ty` module. This includes the **type context**
//! (or `tcx`), which is the central context during most of
//! compilation, containing the interners and other things.
//! - **Traits.** Trait resolution is implemented in the `traits` module.
//! - **Type inference.** The type inference code can be found in the `infer` module;
//! this code handles low-level equality and subtyping operations. The
//! type check pass in the compiler is found in the `librustc_typeck` crate.
//!
//! For more information about how rustc works, see the [rustc guide].
//!
//! [rustc guide]: https://rust-lang.github.io/rustc-guide/
//!
//! # Note
//!
//! This API is completely unstable and subject to change.
#![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
#![deny(rust_2018_idioms)]
#![deny(unused_lifetimes)]
#![feature(arbitrary_self_types)]
#![feature(box_patterns)]
#![feature(box_syntax)]
#![feature(const_fn)]
#![feature(const_transmute)]
#![feature(core_intrinsics)]
#![feature(drain_filter)]
#![feature(inner_deref)]
#![cfg_attr(windows, feature(libc))]
#![feature(never_type)]
#![feature(exhaustive_patterns)]
#![feature(overlapping_marker_traits)]
#![feature(extern_types)]
#![feature(nll)]
#![feature(non_exhaustive)]
#![feature(optin_builtin_traits)]
#![feature(range_is_empty)]
#![feature(rustc_diagnostic_macros)]
#![feature(slice_patterns)]
#![feature(specialization)]
#![feature(unboxed_closures)]
#![feature(thread_local)]
#![feature(trace_macros)]
#![feature(trusted_len)]
#![feature(vec_remove_item)]
#![feature(stmt_expr_attributes)]
#![feature(integer_atomics)]
#![feature(test)]
#![feature(in_band_lifetimes)]
#![feature(crate_visibility_modifier)]
#![feature(proc_macro_hygiene)]
#![feature(log_syntax)]
#![feature(mem_take)]
#![recursion_limit="512"]
#[macro_use] extern crate bitflags;
extern crate getopts;
#[macro_use] extern crate lazy_static;
#[macro_use] extern crate scoped_tls;
#[cfg(windows)]
extern crate libc;
#[macro_use] extern crate rustc_macros;
#[macro_use] extern crate rustc_data_structures;
#[macro_use] extern crate log;
#[macro_use] extern crate syntax;
// FIXME: This import is used by deriving `RustcDecodable` and `RustcEncodable`. Removing this
// results in a bunch of "failed to resolve" errors. Hopefully, the compiler moves to serde or
// something, and we can get rid of this.
#[allow(rust_2018_idioms)]
extern crate serialize as rustc_serialize;
#[macro_use] extern crate smallvec;
// Use the test crate here so we depend on getopts through it. This allow tools to link to both
// librustc_driver and libtest.
#[allow(unused_extern_crates)]
extern crate test;
#[macro_use]
mod macros;
// N.B., this module needs to be declared first so diagnostics are
// registered before they are used.
pub mod error_codes;
#[macro_use]
pub mod query;
#[macro_use]
pub mod arena;
pub mod cfg;
pub mod dep_graph;
pub mod hir;
pub mod ich;
pub mod infer;
pub mod lint;
pub mod middle {
pub mod allocator;
pub mod borrowck;
pub mod expr_use_visitor;
pub mod cstore;
pub mod dead;
pub mod dependency_format;
pub mod entry;
pub mod exported_symbols;
pub mod free_region;
pub mod intrinsicck;
pub mod lib_features;
pub mod lang_items;
pub mod liveness;
pub mod mem_categorization;
pub mod privacy;
pub mod reachable;
pub mod region;
pub mod recursion_limit;
pub mod resolve_lifetime;
pub mod stability;
pub mod weak_lang_items;
}
pub mod mir;
pub mod session;
pub mod traits;
pub mod ty;
pub mod util {
pub mod captures;
pub mod common;
pub mod nodemap;
pub mod profiling;
pub mod bug;
}
// Allows macros to refer to this crate as `::rustc`
extern crate self as rustc;
// FIXME(#27438): right now the unit tests of librustc don't refer to any actual
// functions generated in librustc_data_structures (all
// references are through generic functions), but statics are
// referenced from time to time. Due to this bug we won't
// actually correctly link in the statics unless we also
// reference a function, so be sure to reference a dummy
// function.
#[test]
fn noop() {
rustc_data_structures::__noop_fix_for_27438();
}
// Build the diagnostics array at the end so that the metadata includes error use sites.
__build_diagnostic_array! { librustc, DIAGNOSTICS }
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