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Use QuantifiedWhereClause in generic_predicates as well

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Still far too much binder skipping going on; I find it hard to imagine
this is all correct, but the tests pass.
This commit is contained in:
Florian Diebold 2021-03-21 17:40:14 +01:00
parent 590c416359
commit 1d5c4a77fb
9 changed files with 28 additions and 37 deletions
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5
crates/hir_ty/src/infer/expr.rs
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@ -11,6 +11,7 @@ use hir_def::{
AssocContainerId, FieldId, Lookup,
};
use hir_expand::name::{name, Name};
use stdx::always;
use syntax::ast::RangeOp;
use crate::{
@ -936,7 +937,9 @@ impl<'a> InferenceContext<'a> {
let def: CallableDefId = from_chalk(self.db, *fn_def);
let generic_predicates = self.db.generic_predicates(def.into());
for predicate in generic_predicates.iter() {
let predicate = predicate.clone().subst(parameters);
let (predicate, binders) =
predicate.clone().subst(parameters).into_value_and_skipped_binders();
always!(binders == 0); // quantified where clauses not yet handled
self.obligations.push(predicate.cast(&Interner));
}
// add obligation for trait implementation, if this is a trait method