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Rollup merge of #93290 - lcnr:same_type, r=jackh726

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remove `TyS::same_type`

This function ignored regions and constants in adts, but didn't do so for references or any other types. cc https://github.com/rust-lang/rust/pull/93148#discussion_r791408057
This commit is contained in:
Matthias Krüger 2022-02-01 16:08:05 +01:00 committed by GitHub
parent eb01fe85f7 7ebd48d006
commit 724ce3798f
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GPG key ID: 4AEE18F83AFDEB23
22 changed files with 30 additions and 50 deletions
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2
compiler/rustc_lint/src/builtin.rs
View file

@ -2833,7 +2833,7 @@ impl ClashingExternDeclarations {
return true;
}
let tcx = cx.tcx;
if a == b || rustc_middle::ty::TyS::same_type(a, b) {
if a == b {
// All nominally-same types are structurally same, too.
true
} else {

13
compiler/rustc_middle/src/ty/util.rs
View file

@ -893,19 +893,6 @@ impl<'tcx> ty::TyS<'tcx> {
}
}
pub fn same_type(a: Ty<'tcx>, b: Ty<'tcx>) -> bool {
match (&a.kind(), &b.kind()) {
(&Adt(did_a, substs_a), &Adt(did_b, substs_b)) => {
if did_a != did_b {
return false;
}
substs_a.types().zip(substs_b.types()).all(|(a, b)| Self::same_type(a, b))
}
_ => a == b,
}
}
/// Peel off all reference types in this type until there are none left.
///
/// This method is idempotent, i.e. `ty.peel_refs().peel_refs() == ty.peel_refs()`.

4
compiler/rustc_mir_transform/src/function_item_references.rs
View file

@ -6,7 +6,7 @@ use rustc_middle::mir::*;
use rustc_middle::ty::{
self,
subst::{GenericArgKind, Subst, SubstsRef},
PredicateKind, Ty, TyCtxt, TyS,
PredicateKind, Ty, TyCtxt,
};
use rustc_session::lint::builtin::FUNCTION_ITEM_REFERENCES;
use rustc_span::{symbol::sym, Span};
@ -88,7 +88,7 @@ impl<'tcx> FunctionItemRefChecker<'_, 'tcx> {
for generic_inner_ty in arg_def.walk() {
if let GenericArgKind::Type(inner_ty) = generic_inner_ty.unpack() {
// If the inner type matches the type bound by `Pointer`
if TyS::same_type(inner_ty, bound_ty) {
if inner_ty == bound_ty {
// Do a substitution using the parameters from the callsite
let subst_ty = inner_ty.subst(self.tcx, substs_ref);
if let Some((fn_id, fn_substs)) =

2
compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
View file

@ -1555,7 +1555,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
// `erase_late_bound_regions`.
let ty_erased = self.tcx.erase_late_bound_regions(ty);
let ty_erased = self.tcx.erase_regions(ty_erased);
let eq = ty::TyS::same_type(ty_erased, target_ty_erased);
let eq = ty_erased == target_ty_erased;
debug!(
"maybe_note_obligation_cause_for_async_await: ty_erased={:?} \
target_ty_erased={:?} eq={:?}",

2
compiler/rustc_ty_utils/src/representability.rs
View file

@ -322,7 +322,7 @@ fn is_type_structurally_recursive_inner<'tcx>(
// struct Foo { Option<Option<Foo>> }
for &seen_adt in iter {
if ty::TyS::same_type(ty, seen_adt) {
if ty == seen_adt {
debug!("ContainsRecursive: {:?} contains {:?}", seen_adt, ty);
return Representability::ContainsRecursive;
}

4
src/tools/clippy/clippy_lints/src/dereference.rs
View file

@ -12,7 +12,7 @@ use rustc_hir::{
};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow, AutoBorrowMutability};
use rustc_middle::ty::{self, Ty, TyCtxt, TyS, TypeckResults};
use rustc_middle::ty::{self, Ty, TyCtxt, TypeckResults};
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::{symbol::sym, Span};
@ -448,7 +448,7 @@ fn try_parse_ref_op<'tcx>(
// the reference.
fn deref_method_same_type(result_ty: Ty<'_>, arg_ty: Ty<'_>) -> bool {
match (result_ty.kind(), arg_ty.kind()) {
(ty::Ref(_, result_ty, _), ty::Ref(_, arg_ty, _)) => TyS::same_type(result_ty, arg_ty),
(ty::Ref(_, result_ty, _), ty::Ref(_, arg_ty, _)) => result_ty == arg_ty,
// The result type for a deref method is always a reference
// Not matching the previous pattern means the argument type is not a reference

4
src/tools/clippy/clippy_lints/src/implicit_hasher.rs
View file

@ -8,7 +8,7 @@ use rustc_hir::{Body, Expr, ExprKind, GenericArg, Item, ItemKind, QPath, TyKind}
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_middle::hir::nested_filter;
use rustc_middle::lint::in_external_macro;
use rustc_middle::ty::{Ty, TyS, TypeckResults};
use rustc_middle::ty::{Ty, TypeckResults};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::source_map::Span;
use rustc_span::symbol::sym;
@ -346,7 +346,7 @@ impl<'a, 'b, 'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'a, 'b, 't
if let TyKind::Path(QPath::Resolved(None, ty_path)) = ty.kind;
if let Some(ty_did) = ty_path.res.opt_def_id();
then {
if !TyS::same_type(self.target.ty(), self.maybe_typeck_results.unwrap().expr_ty(e)) {
if self.target.ty() != self.maybe_typeck_results.unwrap().expr_ty(e) {
return;
}

4
src/tools/clippy/clippy_lints/src/len_zero.rs
View file

@ -10,7 +10,7 @@ use rustc_hir::{
ItemKind, Mutability, Node, TraitItemRef, TyKind,
};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::{self, AssocKind, FnSig, Ty, TyS};
use rustc_middle::ty::{self, AssocKind, FnSig, Ty};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::{
source_map::{Span, Spanned, Symbol},
@ -265,7 +265,7 @@ impl LenOutput<'_> {
(_, &ty::Bool) => true,
(Self::Option(id), &ty::Adt(adt, subs)) if id == adt.did => subs.type_at(0).is_bool(),
(Self::Result(id, err_ty), &ty::Adt(adt, subs)) if id == adt.did => {
subs.type_at(0).is_bool() && TyS::same_type(subs.type_at(1), err_ty)
subs.type_at(0).is_bool() && subs.type_at(1) == err_ty
},
_ => false,
}

3
src/tools/clippy/clippy_lints/src/loops/explicit_into_iter_loop.rs
View file

@ -5,13 +5,12 @@ use clippy_utils::source::snippet_with_applicability;
use rustc_errors::Applicability;
use rustc_hir::Expr;
use rustc_lint::LateContext;
use rustc_middle::ty::TyS;
use rustc_span::symbol::sym;
pub(super) fn check(cx: &LateContext<'_>, self_arg: &Expr<'_>, call_expr: &Expr<'_>) {
let self_ty = cx.typeck_results().expr_ty(self_arg);
let self_ty_adjusted = cx.typeck_results().expr_ty_adjusted(self_arg);
if !(TyS::same_type(self_ty, self_ty_adjusted) && is_trait_method(cx, call_expr, sym::IntoIterator)) {
if !(self_ty == self_ty_adjusted && is_trait_method(cx, call_expr, sym::IntoIterator)) {
return;
}

4
src/tools/clippy/clippy_lints/src/loops/explicit_iter_loop.rs
View file

@ -6,7 +6,7 @@ use clippy_utils::ty::is_type_diagnostic_item;
use rustc_errors::Applicability;
use rustc_hir::{Expr, Mutability};
use rustc_lint::LateContext;
use rustc_middle::ty::{self, Ty, TyS};
use rustc_middle::ty::{self, Ty};
use rustc_span::sym;
pub(super) fn check(cx: &LateContext<'_>, self_arg: &Expr<'_>, arg: &Expr<'_>, method_name: &str) {
@ -22,7 +22,7 @@ pub(super) fn check(cx: &LateContext<'_>, self_arg: &Expr<'_>, arg: &Expr<'_>, m
mutbl: Mutability::Not,
},
);
TyS::same_type(receiver_ty_adjusted, ref_receiver_ty)
receiver_ty_adjusted == ref_receiver_ty
},
_ => false,
};

4
src/tools/clippy/clippy_lints/src/matches.rs
View file

@ -26,7 +26,7 @@ use rustc_hir::{
};
use rustc_hir::{HirIdMap, HirIdSet};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::{self, Ty, TyS, VariantDef};
use rustc_middle::ty::{self, Ty, VariantDef};
use rustc_semver::RustcVersion;
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::source_map::{Span, Spanned};
@ -2262,7 +2262,7 @@ fn lint_match_arms<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>) {
};
// the names technically don't have to match; this makes the lint more conservative
if cx.tcx.hir().name(a_id) == cx.tcx.hir().name(b_id);
if TyS::same_type(cx.typeck_results().expr_ty(a), cx.typeck_results().expr_ty(b));
if cx.typeck_results().expr_ty(a) == cx.typeck_results().expr_ty(b);
if pat_contains_local(lhs.pat, a_id);
if pat_contains_local(rhs.pat, b_id);
then {

3
src/tools/clippy/clippy_lints/src/methods/filter_map.rs
View file

@ -8,7 +8,6 @@ use rustc_hir as hir;
use rustc_hir::def::Res;
use rustc_hir::{Expr, ExprKind, PatKind, QPath, UnOp};
use rustc_lint::LateContext;
use rustc_middle::ty::TyS;
use rustc_span::source_map::Span;
use rustc_span::symbol::{sym, Symbol};
use std::borrow::Cow;
@ -149,7 +148,7 @@ pub(super) fn check<'tcx>(
if_chain! {
if path_to_local_id(a_path, filter_param_id);
if path_to_local_id(b, map_param_id);
if TyS::same_type(cx.typeck_results().expr_ty_adjusted(a), cx.typeck_results().expr_ty_adjusted(b));
if cx.typeck_results().expr_ty_adjusted(a) == cx.typeck_results().expr_ty_adjusted(b);
then {
return true;
}

3
src/tools/clippy/clippy_lints/src/methods/implicit_clone.rs
View file

@ -6,7 +6,6 @@ use if_chain::if_chain;
use rustc_errors::Applicability;
use rustc_hir as hir;
use rustc_lint::LateContext;
use rustc_middle::ty::TyS;
use rustc_span::sym;
use super::IMPLICIT_CLONE;
@ -19,7 +18,7 @@ pub fn check(cx: &LateContext<'_>, method_name: &str, expr: &hir::Expr<'_>, recv
let input_type = cx.typeck_results().expr_ty(recv);
let (input_type, ref_count) = peel_mid_ty_refs(input_type);
if let Some(ty_name) = input_type.ty_adt_def().map(|adt_def| cx.tcx.item_name(adt_def.did));
if TyS::same_type(return_type, input_type);
if return_type == input_type;
then {
let mut app = Applicability::MachineApplicable;
let recv_snip = snippet_with_context(cx, recv.span, expr.span.ctxt(), "..", &mut app).0;

4
src/tools/clippy/clippy_lints/src/methods/mod.rs
View file

@ -78,7 +78,7 @@ use rustc_hir::def::Res;
use rustc_hir::{Expr, ExprKind, PrimTy, QPath, TraitItem, TraitItemKind};
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_middle::lint::in_external_macro;
use rustc_middle::ty::{self, TraitRef, Ty, TyS};
use rustc_middle::ty::{self, TraitRef, Ty};
use rustc_semver::RustcVersion;
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::{sym, Span};
@ -2195,7 +2195,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
}
}
if name == "new" && !TyS::same_type(ret_ty, self_ty) {
if name == "new" && ret_ty != self_ty {
span_lint(
cx,
NEW_RET_NO_SELF,

4
src/tools/clippy/clippy_lints/src/methods/unnecessary_filter_map.rs
View file

@ -5,7 +5,7 @@ use rustc_hir as hir;
use rustc_hir::intravisit::{walk_expr, Visitor};
use rustc_hir::LangItem::{OptionNone, OptionSome};
use rustc_lint::LateContext;
use rustc_middle::ty::{self, TyS};
use rustc_middle::ty;
use rustc_span::sym;
use super::UNNECESSARY_FILTER_MAP;
@ -34,7 +34,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, arg: &hir::Expr<
let in_ty = cx.typeck_results().node_type(body.params[0].hir_id);
match cx.typeck_results().expr_ty(&body.value).kind() {
ty::Adt(adt, subst)
if cx.tcx.is_diagnostic_item(sym::Option, adt.did) && TyS::same_type(in_ty, subst.type_at(0)) =>
if cx.tcx.is_diagnostic_item(sym::Option, adt.did) && in_ty == subst.type_at(0) =>
{
"filter"
},

3
src/tools/clippy/clippy_lints/src/needless_option_as_deref.rs
View file

@ -4,7 +4,6 @@ use clippy_utils::ty::is_type_diagnostic_item;
use rustc_errors::Applicability;
use rustc_hir::{Expr, ExprKind};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::TyS;
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::symbol::sym;
@ -49,7 +48,7 @@ impl<'tcx> LateLintPass<'tcx> for OptionNeedlessDeref {
if let ExprKind::MethodCall(path, [sub_expr], _) = expr.kind;
let symbol = path.ident.as_str();
if symbol == "as_deref" || symbol == "as_deref_mut";
if TyS::same_type( outer_ty, typeck.expr_ty(sub_expr) );
if outer_ty == typeck.expr_ty(sub_expr);
then{
span_lint_and_sugg(
cx,

3
src/tools/clippy/clippy_lints/src/needless_question_mark.rs
View file

@ -6,7 +6,6 @@ use rustc_errors::Applicability;
use rustc_hir::LangItem::{OptionSome, ResultOk};
use rustc_hir::{AsyncGeneratorKind, Block, Body, Expr, ExprKind, GeneratorKind, LangItem, MatchSource, QPath};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::TyS;
use rustc_session::{declare_lint_pass, declare_tool_lint};
declare_clippy_lint! {
@ -128,7 +127,7 @@ fn check(cx: &LateContext<'_>, expr: &Expr<'_>) {
if expr.span.ctxt() == inner_expr.span.ctxt();
let expr_ty = cx.typeck_results().expr_ty(expr);
let inner_ty = cx.typeck_results().expr_ty(inner_expr);
if TyS::same_type(expr_ty, inner_ty);
if expr_ty == inner_ty;
then {
span_lint_and_sugg(
cx,

3
src/tools/clippy/clippy_lints/src/new_without_default.rs
View file

@ -8,7 +8,6 @@ use rustc_hir as hir;
use rustc_hir::HirIdSet;
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_middle::lint::in_external_macro;
use rustc_middle::ty::TyS;
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::sym;
@ -103,7 +102,7 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault {
if cx.access_levels.is_reachable(impl_item.def_id);
let self_def_id = cx.tcx.hir().get_parent_item(id);
let self_ty = cx.tcx.type_of(self_def_id);
if TyS::same_type(self_ty, return_ty(cx, id));
if self_ty == return_ty(cx, id);
if let Some(default_trait_id) = cx.tcx.get_diagnostic_item(sym::Default);
then {
if self.impling_types.is_none() {

3
src/tools/clippy/clippy_lints/src/redundant_slicing.rs
View file

@ -6,7 +6,6 @@ use if_chain::if_chain;
use rustc_errors::Applicability;
use rustc_hir::{BorrowKind, Expr, ExprKind, LangItem, Mutability};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::TyS;
use rustc_session::{declare_lint_pass, declare_tool_lint};
declare_clippy_lint! {
@ -54,7 +53,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantSlicing {
if addressee.span.ctxt() == ctxt;
if let ExprKind::Index(indexed, range) = addressee.kind;
if is_type_lang_item(cx, cx.typeck_results().expr_ty_adjusted(range), LangItem::RangeFull);
if TyS::same_type(cx.typeck_results().expr_ty(expr), cx.typeck_results().expr_ty(indexed));
if cx.typeck_results().expr_ty(expr) == cx.typeck_results().expr_ty(indexed);
then {
let mut app = Applicability::MachineApplicable;
let snip = snippet_with_context(cx, indexed.span, ctxt, "..", &mut app).0;

4
src/tools/clippy/clippy_lints/src/size_of_in_element_count.rs
View file

@ -7,7 +7,7 @@ use if_chain::if_chain;
use rustc_hir::BinOpKind;
use rustc_hir::{Expr, ExprKind};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::{self, Ty, TyS, TypeAndMut};
use rustc_middle::ty::{self, Ty, TypeAndMut};
use rustc_session::{declare_lint_pass, declare_tool_lint};
declare_clippy_lint! {
@ -138,7 +138,7 @@ impl<'tcx> LateLintPass<'tcx> for SizeOfInElementCount {
// Find a size_of call in the count parameter expression and
// check that it's the same type
if let Some(ty_used_for_size_of) = get_size_of_ty(cx, count_expr, false);
if TyS::same_type(pointee_ty, ty_used_for_size_of);
if pointee_ty == ty_used_for_size_of;
then {
span_lint_and_help(
cx,

2
src/tools/clippy/clippy_utils/src/hir_utils.rs
View file

@ -102,7 +102,7 @@ impl HirEqInterExpr<'_, '_, '_> {
if let Some(typeck) = self.inner.maybe_typeck_results {
let l_ty = typeck.pat_ty(l.pat);
let r_ty = typeck.pat_ty(r.pat);
if !rustc_middle::ty::TyS::same_type(l_ty, r_ty) {
if l_ty != r_ty {
return false;
}
}

2
src/tools/clippy/clippy_utils/src/ty.rs
View file

@ -42,7 +42,7 @@ pub fn can_partially_move_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool
/// Walks into `ty` and returns `true` if any inner type is the same as `other_ty`
pub fn contains_ty(ty: Ty<'_>, other_ty: Ty<'_>) -> bool {
ty.walk().any(|inner| match inner.unpack() {
GenericArgKind::Type(inner_ty) => ty::TyS::same_type(other_ty, inner_ty),
GenericArgKind::Type(inner_ty) => other_ty == inner_ty,
GenericArgKind::Lifetime(_) | GenericArgKind::Const(_) => false,
})
}