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Expose rustc_trait_selection::error_reporting::ambiguity module

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This commit is contained in:
Urgau 2024-03-14 23:31:10 +01:00
parent 524f3c9c44
commit 617324095b
3 changed files with 13 additions and 12 deletions
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13
compiler/rustc_trait_selection/src/traits/error_reporting/ambiguity.rs
View File

@ -7,15 +7,16 @@ use rustc_span::{Span, DUMMY_SP};
use crate::traits::ObligationCtxt;
pub enum Ambiguity {
#[derive(Debug)]
pub enum CandidateSource {
DefId(DefId),
ParamEnv(Span),
}
pub fn recompute_applicable_impls<'tcx>(
pub fn compute_applicable_impls_for_diagnostics<'tcx>(
infcx: &InferCtxt<'tcx>,
obligation: &PolyTraitObligation<'tcx>,
) -> Vec<Ambiguity> {
) -> Vec<CandidateSource> {
let tcx = infcx.tcx;
let param_env = obligation.param_env;
@ -97,7 +98,7 @@ pub fn recompute_applicable_impls<'tcx>(
obligation.predicate.skip_binder().trait_ref.self_ty(),
|impl_def_id| {
if infcx.probe(|_| impl_may_apply(impl_def_id)) {
ambiguities.push(Ambiguity::DefId(impl_def_id))
ambiguities.push(CandidateSource::DefId(impl_def_id))
}
},
);
@ -112,9 +113,9 @@ pub fn recompute_applicable_impls<'tcx>(
if kind.rebind(trait_pred.trait_ref)
== ty::Binder::dummy(ty::TraitRef::identity(tcx, trait_pred.def_id()))
{
ambiguities.push(Ambiguity::ParamEnv(tcx.def_span(trait_pred.def_id())))
ambiguities.push(CandidateSource::ParamEnv(tcx.def_span(trait_pred.def_id())))
} else {
ambiguities.push(Ambiguity::ParamEnv(span))
ambiguities.push(CandidateSource::ParamEnv(span))
}
}
}

2
compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
View File

@ -1,6 +1,6 @@
// ignore-tidy-filelength :(
mod ambiguity;
pub mod ambiguity;
mod infer_ctxt_ext;
pub mod on_unimplemented;
pub mod suggestions;

10
compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs
View File

@ -10,7 +10,7 @@ use crate::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
use crate::infer::InferCtxtExt as _;
use crate::infer::{self, InferCtxt};
use crate::traits::error_reporting::infer_ctxt_ext::InferCtxtExt;
use crate::traits::error_reporting::{ambiguity, ambiguity::Ambiguity::*};
use crate::traits::error_reporting::{ambiguity, ambiguity::CandidateSource::*};
use crate::traits::query::evaluate_obligation::InferCtxtExt as _;
use crate::traits::specialize::to_pretty_impl_header;
use crate::traits::NormalizeExt;
@ -2386,7 +2386,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
)
};
let mut ambiguities = ambiguity::recompute_applicable_impls(
let mut ambiguities = ambiguity::compute_applicable_impls_for_diagnostics(
self.infcx,
&obligation.with(self.tcx, trait_ref),
);
@ -2702,7 +2702,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
fn annotate_source_of_ambiguity(
&self,
err: &mut Diag<'_>,
ambiguities: &[ambiguity::Ambiguity],
ambiguities: &[ambiguity::CandidateSource],
predicate: ty::Predicate<'tcx>,
) {
let mut spans = vec![];
@ -2711,7 +2711,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
let mut has_param_env = false;
for ambiguity in ambiguities {
match ambiguity {
ambiguity::Ambiguity::DefId(impl_def_id) => {
ambiguity::CandidateSource::DefId(impl_def_id) => {
match self.tcx.span_of_impl(*impl_def_id) {
Ok(span) => spans.push(span),
Err(name) => {
@ -2722,7 +2722,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
}
}
}
ambiguity::Ambiguity::ParamEnv(span) => {
ambiguity::CandidateSource::ParamEnv(span) => {
has_param_env = true;
spans.push(*span);
}