bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Turn Outcome into an opaque type to remove some runtime checks

Browse source
This commit is contained in:
Dániel Buga 2020-10-14 02:46:21 +02:00
parent 5f11e71721
commit 8c7a8a62dd
3 changed files with 319 additions and 347 deletions
Download patch file Download diff file Expand all files Collapse all files

10
compiler/rustc_trait_selection/src/traits/fulfill.rs
View file

@ -1,6 +1,6 @@
use crate::infer::{InferCtxt, TyOrConstInferVar};
use rustc_data_structures::obligation_forest::ProcessResult;
use rustc_data_structures::obligation_forest::{DoCompleted, Error, ForestObligation};
use rustc_data_structures::obligation_forest::{Error, ForestObligation, Outcome};
use rustc_data_structures::obligation_forest::{ObligationForest, ObligationProcessor};
use rustc_errors::ErrorReported;
use rustc_infer::traits::{TraitEngine, TraitEngineExt as _, TraitObligation};
@ -129,13 +129,11 @@ impl<'a, 'tcx> FulfillmentContext<'tcx> {
debug!("select: starting another iteration");
// Process pending obligations.
let outcome = self.predicates.process_obligations(
&mut FulfillProcessor {
let outcome: Outcome<_, _> =
self.predicates.process_obligations(&mut FulfillProcessor {
selcx,
register_region_obligations: self.register_region_obligations,
},
DoCompleted::No,
);
});
debug!("select: outcome={:#?}", outcome);
// FIXME: if we kept the original cache key, we could mark projection