Crate rustc_middle

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 rustc_const_eval 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.

For more information about how rustc works, see the rustc dev guide.

Note

This API is completely unstable and subject to change.

Modules

arena

dep_graph

hir

HIR datatypes. See the rustc dev guide for more info.

infer

lint

macros

middle

mir

MIR datatypes and passes. See the rustc dev guide for more info.

query

thir

THIR datatypes and definitions. See the rustc dev guide for more info.

traits

Trait Resolution. See the rustc dev guide for more information on how this works.

ty

Defines how the compiler represents types internally.

util

Macros

CloneLiftImpls

EnumTypeFoldableImpl

TrivialTypeFoldableAndLiftImpls

TrivialTypeFoldableImpls

Used for types that are Copy and which do not care arena allocated data (i.e., don’t need to be folded).

__impl_decoder_methods

arena_types

This declares a list of types which can be allocated by Arena.

bug

err_exhaust

err_inval

err_machine_stop

err_ub

err_ub_format

err_unsup

err_unsup_format

implement_ty_decoder

make_dep_kind_array

rustc_cached_queries

rustc_query_append

rustc_query_description

span_bug

throw_exhaust

throw_inval

throw_machine_stop

throw_ub

throw_ub_format

throw_unsup

throw_unsup_format