Aaron Hill 93ab12eeab Improve cause information for NLL higher-ranked errors ... This PR has several interconnected pieces: 1. In some of the NLL region error code, we now pass around an `ObligationCause`, instead of just a plain `Span`. This gets forwarded into `fulfill_cx.register_predicate_obligation` during error reporting. 2. The general InferCtxt error reporting code is extended to handle `ObligationCauseCode::BindingObligation` 3. A new enum variant `ConstraintCategory::Predicate` is added. We try to avoid using this as the 'best blame constraint' - instead, we use it to enhance the `ObligationCause` of the `BlameConstraint` that we do end up choosing. As a result, several NLL error messages now contain the same "the lifetime requirement is introduced here" message as non-NLL errors. Having an `ObligationCause` available will likely prove useful for future improvements to NLL error messages.		2021-09-27 10:23:45 -05:00
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constraints	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
diagnostics	Improve cause information for NLL higher-ranked errors	2021-09-27 10:23:45 -05:00
region_infer	Improve cause information for NLL higher-ranked errors	2021-09-27 10:23:45 -05:00
type_check	Improve cause information for NLL higher-ranked errors	2021-09-27 10:23:45 -05:00
borrow_set.rs	Move the dataflow framework to its own crate.	2021-09-07 19:57:07 +02:00
borrowck_errors.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
constraint_generation.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
consumers.rs	Allow call to get_body_with_borrowck_facts without -Z polonius	2021-09-15 11:45:31 -07:00
dataflow.rs	Move the dataflow framework to its own crate.	2021-09-07 19:57:07 +02:00
def_use.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
facts.rs	Move the dataflow framework to its own crate.	2021-09-07 19:57:07 +02:00
invalidation.rs	Introduce Rvalue::ShallowInitBox	2021-09-25 01:08:41 +01:00
lib.rs	Introduce Rvalue::ShallowInitBox	2021-09-25 01:08:41 +01:00
location.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
member_constraints.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
nll.rs	Allow call to get_body_with_borrowck_facts without -Z polonius	2021-09-15 11:45:31 -07:00
path_utils.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
place_ext.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
places_conflict.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
prefixes.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
renumber.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
universal_regions.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00
used_muts.rs	Move rustc_mir::borrow_check to new crate rustc_borrowck.	2021-09-07 00:29:22 +02:00