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Separate the construction of a generic bound failure from its emission.

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This commit is contained in:
Felix S. Klock II 2018-07-18 23:17:22 +02:00
parent 87e729f58a
commit ec005ccf84
1 changed files with 20 additions and 4 deletions
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24
src/librustc/infer/error_reporting/mod.rs
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@ -1086,6 +1086,23 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
bound_kind: GenericKind<'tcx>,
sub: Region<'tcx>,
) {
self.construct_generic_bound_failure(region_scope_tree,
span,
origin,
bound_kind,
sub)
.emit()
}
pub fn construct_generic_bound_failure(
&self,
region_scope_tree: &region::ScopeTree,
span: Span,
origin: Option<SubregionOrigin<'tcx>>,
bound_kind: GenericKind<'tcx>,
sub: Region<'tcx>,
) -> DiagnosticBuilder<'a>
{
// Attempt to obtain the span of the parameter so we can
// suggest adding an explicit lifetime bound to it.
let type_param_span = match (self.in_progress_tables, bound_kind) {
@ -1139,14 +1156,13 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
trait_item_def_id,
}) = origin
{
self.report_extra_impl_obligation(
return self.report_extra_impl_obligation(
span,
item_name,
impl_item_def_id,
trait_item_def_id,
&format!("`{}: {}`", bound_kind, sub),
).emit();
return;
);
}
fn binding_suggestion<'tcx, S: fmt::Display>(
@ -1229,7 +1245,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
if let Some(origin) = origin {
self.note_region_origin(&mut err, &origin);
}
err.emit();
err
}
fn report_sub_sup_conflict(