Crate rustc_traits

New recursive solver modeled on Chalk’s recursive solver. Most of the guts are broken up into modules; see the comments in those modules.

Modules

chalk

Calls chalk-solve to solve a ty::Predicate

dropck_outlives

evaluate_obligation

implied_outlives_bounds

Provider for the implied_outlives_bounds query. Do not call this query directory. See rustc_trait_selection::traits::query::type_op::implied_outlives_bounds.

normalize_erasing_regions

normalize_projection_ty

type_op

Functions

provide

type_op_prove_predicate_with_span

The core of the type_op_prove_predicate query: for diagnostics purposes in NLL HRTB errors, this query can be re-run to better track the span of the obligation cause, and improve the error message. Do not call directly unless you’re in that very specific context.