bjoernager/rust
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Pass constness to SelectionContext

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Deadbeef 2021-07-26 10:52:17 +08:00
parent a00f2bcf5c
commit 01bb3710b5
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GPG key ID: 027DF9338862ADDD
5 changed files with 101 additions and 23 deletions
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18
compiler/rustc_infer/src/traits/engine.rs
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@ -1,5 +1,6 @@
use crate::infer::InferCtxt;
use crate::traits::Obligation;
use rustc_hir as hir;
use rustc_hir::def_id::DefId;
use rustc_middle::ty::{self, ToPredicate, Ty, WithConstness};
@ -49,11 +50,28 @@ pub trait TraitEngine<'tcx>: 'tcx {
infcx: &InferCtxt<'_, 'tcx>,
) -> Result<(), Vec<FulfillmentError<'tcx>>>;
fn select_all_with_constness_or_error(
&mut self,
infcx: &InferCtxt<'_, 'tcx>,
_constness: hir::Constness,
) -> Result<(), Vec<FulfillmentError<'tcx>>> {
self.select_all_or_error(infcx)
}
fn select_where_possible(
&mut self,
infcx: &InferCtxt<'_, 'tcx>,
) -> Result<(), Vec<FulfillmentError<'tcx>>>;
// FIXME this should not provide a default body for chalk as chalk should be updated
fn select_with_constness_where_possible(
&mut self,
infcx: &InferCtxt<'_, 'tcx>,
_constness: hir::Constness,
) -> Result<(), Vec<FulfillmentError<'tcx>>> {
self.select_where_possible(infcx)
}
fn pending_obligations(&self) -> Vec<PredicateObligation<'tcx>>;
}