rename Predicate to PredicateKind, introduce alias

Author: lcnr

clippy_lints/src/future_not_send.rs

@@ -3,7 +3,7 @@ use rustc_hir::intravisit::FnKind;
 use rustc_hir::{Body, FnDecl, HirId};
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_middle::ty::{Opaque, Predicate::Trait, ToPolyTraitRef};
+use rustc_middle::ty::{Opaque, PredicateKind::Trait, ToPolyTraitRef};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::{sym, Span};
 use rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt;

clippy_lints/src/methods/mod.rs

@@ -18,7 +18,7 @@ use rustc_lint::{LateContext, LateLintPass, Lint, LintContext};
 use rustc_middle::hir::map::Map;
 use rustc_middle::lint::in_external_macro;
 use rustc_middle::ty::subst::GenericArgKind;
-use rustc_middle::ty::{self, Predicate, Ty};
+use rustc_middle::ty::{self, Ty};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::source_map::Span;
 use rustc_span::symbol::{sym, SymbolStr};
@@ -1497,7 +1497,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Methods {
                 // one of the associated types must be Self
                 for predicate in cx.tcx.predicates_of(def_id).predicates {
                     match predicate {
-                        (Predicate::Projection(poly_projection_predicate), _) => {
+                        (ty::PredicateKind::Projection(poly_projection_predicate), _) => {
                             let binder = poly_projection_predicate.ty();
                             let associated_type = binder.skip_binder();
 

clippy_lints/src/needless_pass_by_value.rs

@@ -114,7 +114,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NeedlessPassByValue {
         let preds = traits::elaborate_predicates(cx.tcx, cx.param_env.caller_bounds.iter().copied())
             .filter(|p| !p.is_global())
             .filter_map(|obligation| {
-                if let ty::Predicate::Trait(poly_trait_ref, _) = obligation.predicate {
+                if let ty::PredicateKind::Trait(poly_trait_ref, _) = obligation.predicate {
                     if poly_trait_ref.def_id() == sized_trait || poly_trait_ref.skip_binder().has_escaping_bound_vars()
                     {
                         return None;

clippy_lints/src/utils/mod.rs

@@ -1299,7 +1299,7 @@ pub fn is_must_use_ty<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, ty: Ty<'tcx>) -> boo
         ty::Tuple(ref substs) => substs.types().any(|ty| is_must_use_ty(cx, ty)),
         ty::Opaque(ref def_id, _) => {
             for (predicate, _) in cx.tcx.predicates_of(*def_id).predicates {
-                if let ty::Predicate::Trait(ref poly_trait_predicate, _) = predicate {
+                if let ty::PredicateKind::Trait(ref poly_trait_predicate, _) = predicate {
                     if must_use_attr(&cx.tcx.get_attrs(poly_trait_predicate.skip_binder().trait_ref.def_id)).is_some() {
                         return true;
                     }