[][src]Module rustc_mir::borrow_check::type_check

This pass type-checks the MIR to ensure it is not broken.

Modules

constraint_conversion
free_region_relations
input_output

This module contains code to equate the input/output types appearing in the MIR with the expected input/output types from the function signature. This requires a bit of processing, as the expected types are supplied to us before normalization and may contain opaque impl Trait instances. In contrast, the input/output types found in the MIR (specifically, in the special local variables for the RETURN_PLACE the MIR arguments) are always fully normalized (and contain revealed impl Trait values).

liveness
relate_tys

Structs

BorrowCheckContext
MirTypeckRegionConstraints

A collection of region constraints that must be satisfied for the program to be considered well-typed.

MirTypeckResults
ObligationAccumulator
TypeChecker

The MIR type checker. Visits the MIR and enforces all the constraints needed for it to be valid and well-typed. Along the way, it accrues region constraints -- these can later be used by NLL region checking.

TypeVerifier

Verifies that MIR types are sane to not crash further checks.

Enums

FieldAccessError
Locations

The Locations type summarizes where region constraints are required to hold. Normally, this is at a particular point which created the obligation, but for constraints that the user gave, we want the constraint to hold at all points.

Traits

NormalizeLocation

Functions

mirbug
translate_outlives_facts
type_check

Type checks the given mir in the context of the inference context infcx. Returns any region constraints that have yet to be proven. This result is includes liveness constraints that ensure that regions appearing in the types of all local variables are live at all points where that local variable may later be used.

type_check_internal