From 3e528b85f9a3ed25b5dd709aa30dc679ccc5817f Mon Sep 17 00:00:00 2001 From: Lukas Wirth Date: Thu, 18 May 2023 12:03:15 +0200 Subject: [PATCH] Fix cstring literals construct &CStr not &str --- crates/hir-def/src/lang_item.rs | 256 ++++++++++++++------------- crates/hir-ty/src/consteval/tests.rs | 32 ++++ crates/hir-ty/src/infer/expr.rs | 18 +- crates/hir-ty/src/tests/simple.rs | 15 ++ 4 files changed, 198 insertions(+), 123 deletions(-) diff --git a/crates/hir-def/src/lang_item.rs b/crates/hir-def/src/lang_item.rs index 253e2daeddf..0e9ac58fbaa 100644 --- a/crates/hir-def/src/lang_item.rs +++ b/crates/hir-def/src/lang_item.rs @@ -199,7 +199,7 @@ pub enum GenericRequirement { macro_rules! language_item_table { ( - $( $(#[$attr:meta])* $variant:ident, $name:ident, $method:ident, $target:expr, $generics:expr; )* + $( $(#[$attr:meta])* $variant:ident, $module:ident :: $name:ident, $method:ident, $target:expr, $generics:expr; )* ) => { /// A representation of all the valid language items in Rust. @@ -244,82 +244,86 @@ pub fn path(&self, db: &dyn DefDatabase, start_crate: CrateId) -> Option { language_item_table! { // Variant name, Name, Getter method name, Target Generic requirements; - Sized, sized, sized_trait, Target::Trait, GenericRequirement::Exact(0); - Unsize, unsize, unsize_trait, Target::Trait, GenericRequirement::Minimum(1); + Sized, sym::sized, sized_trait, Target::Trait, GenericRequirement::Exact(0); + Unsize, sym::unsize, unsize_trait, Target::Trait, GenericRequirement::Minimum(1); /// Trait injected by `#[derive(PartialEq)]`, (i.e. "Partial EQ"). - StructuralPeq, structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None; + StructuralPeq, sym::structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None; /// Trait injected by `#[derive(Eq)]`, (i.e. "Total EQ"; no, I will not apologize). - StructuralTeq, structural_teq, structural_teq_trait, Target::Trait, GenericRequirement::None; - Copy, copy, copy_trait, Target::Trait, GenericRequirement::Exact(0); - Clone, clone, clone_trait, Target::Trait, GenericRequirement::None; - Sync, sync, sync_trait, Target::Trait, GenericRequirement::Exact(0); - DiscriminantKind, discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None; + StructuralTeq, sym::structural_teq, structural_teq_trait, Target::Trait, GenericRequirement::None; + Copy, sym::copy, copy_trait, Target::Trait, GenericRequirement::Exact(0); + Clone, sym::clone, clone_trait, Target::Trait, GenericRequirement::None; + Sync, sym::sync, sync_trait, Target::Trait, GenericRequirement::Exact(0); + DiscriminantKind, sym::discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None; /// The associated item of the [`DiscriminantKind`] trait. - Discriminant, discriminant_type, discriminant_type, Target::AssocTy, GenericRequirement::None; + Discriminant, sym::discriminant_type, discriminant_type, Target::AssocTy, GenericRequirement::None; - PointeeTrait, pointee_trait, pointee_trait, Target::Trait, GenericRequirement::None; - Metadata, metadata_type, metadata_type, Target::AssocTy, GenericRequirement::None; - DynMetadata, dyn_metadata, dyn_metadata, Target::Struct, GenericRequirement::None; + PointeeTrait, sym::pointee_trait, pointee_trait, Target::Trait, GenericRequirement::None; + Metadata, sym::metadata_type, metadata_type, Target::AssocTy, GenericRequirement::None; + DynMetadata, sym::dyn_metadata, dyn_metadata, Target::Struct, GenericRequirement::None; - Freeze, freeze, freeze_trait, Target::Trait, GenericRequirement::Exact(0); + Freeze, sym::freeze, freeze_trait, Target::Trait, GenericRequirement::Exact(0); - Drop, drop, drop_trait, Target::Trait, GenericRequirement::None; - Destruct, destruct, destruct_trait, Target::Trait, GenericRequirement::None; + FnPtrTrait, sym::fn_ptr_trait, fn_ptr_trait, Target::Trait, GenericRequirement::Exact(0); + FnPtrAddr, sym::fn_ptr_addr, fn_ptr_addr, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - CoerceUnsized, coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1); - DispatchFromDyn, dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1); + Drop, sym::drop, drop_trait, Target::Trait, GenericRequirement::None; + Destruct, sym::destruct, destruct_trait, Target::Trait, GenericRequirement::None; + + CoerceUnsized, sym::coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1); + DispatchFromDyn, sym::dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1); // language items relating to transmutability - TransmuteOpts, transmute_opts, transmute_opts, Target::Struct, GenericRequirement::Exact(0); - TransmuteTrait, transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(3); + TransmuteOpts, sym::transmute_opts, transmute_opts, Target::Struct, GenericRequirement::Exact(0); + TransmuteTrait, sym::transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(3); - Add, add, add_trait, Target::Trait, GenericRequirement::Exact(1); - Sub, sub, sub_trait, Target::Trait, GenericRequirement::Exact(1); - Mul, mul, mul_trait, Target::Trait, GenericRequirement::Exact(1); - Div, div, div_trait, Target::Trait, GenericRequirement::Exact(1); - Rem, rem, rem_trait, Target::Trait, GenericRequirement::Exact(1); - Neg, neg, neg_trait, Target::Trait, GenericRequirement::Exact(0); - Not, not, not_trait, Target::Trait, GenericRequirement::Exact(0); - BitXor, bitxor, bitxor_trait, Target::Trait, GenericRequirement::Exact(1); - BitAnd, bitand, bitand_trait, Target::Trait, GenericRequirement::Exact(1); - BitOr, bitor, bitor_trait, Target::Trait, GenericRequirement::Exact(1); - Shl, shl, shl_trait, Target::Trait, GenericRequirement::Exact(1); - Shr, shr, shr_trait, Target::Trait, GenericRequirement::Exact(1); - AddAssign, add_assign, add_assign_trait, Target::Trait, GenericRequirement::Exact(1); - SubAssign, sub_assign, sub_assign_trait, Target::Trait, GenericRequirement::Exact(1); - MulAssign, mul_assign, mul_assign_trait, Target::Trait, GenericRequirement::Exact(1); - DivAssign, div_assign, div_assign_trait, Target::Trait, GenericRequirement::Exact(1); - RemAssign, rem_assign, rem_assign_trait, Target::Trait, GenericRequirement::Exact(1); - BitXorAssign, bitxor_assign, bitxor_assign_trait, Target::Trait, GenericRequirement::Exact(1); - BitAndAssign, bitand_assign, bitand_assign_trait, Target::Trait, GenericRequirement::Exact(1); - BitOrAssign, bitor_assign, bitor_assign_trait, Target::Trait, GenericRequirement::Exact(1); - ShlAssign, shl_assign, shl_assign_trait, Target::Trait, GenericRequirement::Exact(1); - ShrAssign, shr_assign, shr_assign_trait, Target::Trait, GenericRequirement::Exact(1); - Index, index, index_trait, Target::Trait, GenericRequirement::Exact(1); - IndexMut, index_mut, index_mut_trait, Target::Trait, GenericRequirement::Exact(1); + Add, sym::add, add_trait, Target::Trait, GenericRequirement::Exact(1); + Sub, sym::sub, sub_trait, Target::Trait, GenericRequirement::Exact(1); + Mul, sym::mul, mul_trait, Target::Trait, GenericRequirement::Exact(1); + Div, sym::div, div_trait, Target::Trait, GenericRequirement::Exact(1); + Rem, sym::rem, rem_trait, Target::Trait, GenericRequirement::Exact(1); + Neg, sym::neg, neg_trait, Target::Trait, GenericRequirement::Exact(0); + Not, sym::not, not_trait, Target::Trait, GenericRequirement::Exact(0); + BitXor, sym::bitxor, bitxor_trait, Target::Trait, GenericRequirement::Exact(1); + BitAnd, sym::bitand, bitand_trait, Target::Trait, GenericRequirement::Exact(1); + BitOr, sym::bitor, bitor_trait, Target::Trait, GenericRequirement::Exact(1); + Shl, sym::shl, shl_trait, Target::Trait, GenericRequirement::Exact(1); + Shr, sym::shr, shr_trait, Target::Trait, GenericRequirement::Exact(1); + AddAssign, sym::add_assign, add_assign_trait, Target::Trait, GenericRequirement::Exact(1); + SubAssign, sym::sub_assign, sub_assign_trait, Target::Trait, GenericRequirement::Exact(1); + MulAssign, sym::mul_assign, mul_assign_trait, Target::Trait, GenericRequirement::Exact(1); + DivAssign, sym::div_assign, div_assign_trait, Target::Trait, GenericRequirement::Exact(1); + RemAssign, sym::rem_assign, rem_assign_trait, Target::Trait, GenericRequirement::Exact(1); + BitXorAssign, sym::bitxor_assign, bitxor_assign_trait, Target::Trait, GenericRequirement::Exact(1); + BitAndAssign, sym::bitand_assign, bitand_assign_trait, Target::Trait, GenericRequirement::Exact(1); + BitOrAssign, sym::bitor_assign, bitor_assign_trait, Target::Trait, GenericRequirement::Exact(1); + ShlAssign, sym::shl_assign, shl_assign_trait, Target::Trait, GenericRequirement::Exact(1); + ShrAssign, sym::shr_assign, shr_assign_trait, Target::Trait, GenericRequirement::Exact(1); + Index, sym::index, index_trait, Target::Trait, GenericRequirement::Exact(1); + IndexMut, sym::index_mut, index_mut_trait, Target::Trait, GenericRequirement::Exact(1); - UnsafeCell, unsafe_cell, unsafe_cell_type, Target::Struct, GenericRequirement::None; - VaList, va_list, va_list, Target::Struct, GenericRequirement::None; + UnsafeCell, sym::unsafe_cell, unsafe_cell_type, Target::Struct, GenericRequirement::None; + VaList, sym::va_list, va_list, Target::Struct, GenericRequirement::None; - Deref, deref, deref_trait, Target::Trait, GenericRequirement::Exact(0); - DerefMut, deref_mut, deref_mut_trait, Target::Trait, GenericRequirement::Exact(0); - DerefTarget, deref_target, deref_target, Target::AssocTy, GenericRequirement::None; - Receiver, receiver, receiver_trait, Target::Trait, GenericRequirement::None; + Deref, sym::deref, deref_trait, Target::Trait, GenericRequirement::Exact(0); + DerefMut, sym::deref_mut, deref_mut_trait, Target::Trait, GenericRequirement::Exact(0); + DerefTarget, sym::deref_target, deref_target, Target::AssocTy, GenericRequirement::None; + Receiver, sym::receiver, receiver_trait, Target::Trait, GenericRequirement::None; - Fn, fn, fn_trait, Target::Trait, GenericRequirement::Exact(1); - FnMut, fn_mut, fn_mut_trait, Target::Trait, GenericRequirement::Exact(1); - FnOnce, fn_once, fn_once_trait, Target::Trait, GenericRequirement::Exact(1); + Fn, kw::fn, fn_trait, Target::Trait, GenericRequirement::Exact(1); + FnMut, sym::fn_mut, fn_mut_trait, Target::Trait, GenericRequirement::Exact(1); + FnOnce, sym::fn_once, fn_once_trait, Target::Trait, GenericRequirement::Exact(1); - FnOnceOutput, fn_once_output, fn_once_output, Target::AssocTy, GenericRequirement::None; + FnOnceOutput, sym::fn_once_output, fn_once_output, Target::AssocTy, GenericRequirement::None; - Future, future_trait, future_trait, Target::Trait, GenericRequirement::Exact(0); - GeneratorState, generator_state, gen_state, Target::Enum, GenericRequirement::None; - Generator, generator, gen_trait, Target::Trait, GenericRequirement::Minimum(1); - Unpin, unpin, unpin_trait, Target::Trait, GenericRequirement::None; - Pin, pin, pin_type, Target::Struct, GenericRequirement::None; + Future, sym::future_trait, future_trait, Target::Trait, GenericRequirement::Exact(0); + GeneratorState, sym::generator_state, gen_state, Target::Enum, GenericRequirement::None; + Generator, sym::generator, gen_trait, Target::Trait, GenericRequirement::Minimum(1); + Unpin, sym::unpin, unpin_trait, Target::Trait, GenericRequirement::None; + Pin, sym::pin, pin_type, Target::Struct, GenericRequirement::None; - PartialEq, eq, eq_trait, Target::Trait, GenericRequirement::Exact(1); - PartialOrd, partial_ord, partial_ord_trait, Target::Trait, GenericRequirement::Exact(1); + PartialEq, sym::eq, eq_trait, Target::Trait, GenericRequirement::Exact(1); + PartialOrd, sym::partial_ord, partial_ord_trait, Target::Trait, GenericRequirement::Exact(1); + CVoid, sym::c_void, c_void, Target::Enum, GenericRequirement::None; // A number of panic-related lang items. The `panic` item corresponds to divide-by-zero and // various panic cases with `match`. The `panic_bounds_check` item is for indexing arrays. @@ -328,93 +332,103 @@ pub fn path(&self, db: &dyn DefDatabase, start_crate: CrateId) -> Option { // in the sense that a crate is not required to have it defined to use it, but a final product // is required to define it somewhere. Additionally, there are restrictions on crates that use // a weak lang item, but do not have it defined. - Panic, panic, panic_fn, Target::Fn, GenericRequirement::Exact(0); - PanicNounwind, panic_nounwind, panic_nounwind, Target::Fn, GenericRequirement::Exact(0); - PanicFmt, panic_fmt, panic_fmt, Target::Fn, GenericRequirement::None; - PanicDisplay, panic_display, panic_display, Target::Fn, GenericRequirement::None; - ConstPanicFmt, const_panic_fmt, const_panic_fmt, Target::Fn, GenericRequirement::None; - PanicBoundsCheck, panic_bounds_check, panic_bounds_check_fn, Target::Fn, GenericRequirement::Exact(0); - PanicInfo, panic_info, panic_info, Target::Struct, GenericRequirement::None; - PanicLocation, panic_location, panic_location, Target::Struct, GenericRequirement::None; - PanicImpl, panic_impl, panic_impl, Target::Fn, GenericRequirement::None; - PanicCannotUnwind, panic_cannot_unwind, panic_cannot_unwind, Target::Fn, GenericRequirement::Exact(0); + Panic, sym::panic, panic_fn, Target::Fn, GenericRequirement::Exact(0); + PanicNounwind, sym::panic_nounwind, panic_nounwind, Target::Fn, GenericRequirement::Exact(0); + PanicFmt, sym::panic_fmt, panic_fmt, Target::Fn, GenericRequirement::None; + PanicDisplay, sym::panic_display, panic_display, Target::Fn, GenericRequirement::None; + ConstPanicFmt, sym::const_panic_fmt, const_panic_fmt, Target::Fn, GenericRequirement::None; + PanicBoundsCheck, sym::panic_bounds_check, panic_bounds_check_fn, Target::Fn, GenericRequirement::Exact(0); + PanicMisalignedPointerDereference, sym::panic_misaligned_pointer_dereference, panic_misaligned_pointer_dereference_fn, Target::Fn, GenericRequirement::Exact(0); + PanicInfo, sym::panic_info, panic_info, Target::Struct, GenericRequirement::None; + PanicLocation, sym::panic_location, panic_location, Target::Struct, GenericRequirement::None; + PanicImpl, sym::panic_impl, panic_impl, Target::Fn, GenericRequirement::None; + PanicCannotUnwind, sym::panic_cannot_unwind, panic_cannot_unwind, Target::Fn, GenericRequirement::Exact(0); /// libstd panic entry point. Necessary for const eval to be able to catch it - BeginPanic, begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None; + BeginPanic, sym::begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None; - ExchangeMalloc, exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None; - BoxFree, box_free, box_free_fn, Target::Fn, GenericRequirement::Minimum(1); - DropInPlace, drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1); - AllocLayout, alloc_layout, alloc_layout, Target::Struct, GenericRequirement::None; + // Lang items needed for `format_args!()`. + FormatAlignment, sym::format_alignment, format_alignment, Target::Enum, GenericRequirement::None; + FormatArgument, sym::format_argument, format_argument, Target::Struct, GenericRequirement::None; + FormatArguments, sym::format_arguments, format_arguments, Target::Struct, GenericRequirement::None; + FormatCount, sym::format_count, format_count, Target::Enum, GenericRequirement::None; + FormatPlaceholder, sym::format_placeholder, format_placeholder, Target::Struct, GenericRequirement::None; + FormatUnsafeArg, sym::format_unsafe_arg, format_unsafe_arg, Target::Struct, GenericRequirement::None; - Start, start, start_fn, Target::Fn, GenericRequirement::Exact(1); + ExchangeMalloc, sym::exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None; + BoxFree, sym::box_free, box_free_fn, Target::Fn, GenericRequirement::Minimum(1); + DropInPlace, sym::drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1); + AllocLayout, sym::alloc_layout, alloc_layout, Target::Struct, GenericRequirement::None; - EhPersonality, eh_personality, eh_personality, Target::Fn, GenericRequirement::None; - EhCatchTypeinfo, eh_catch_typeinfo, eh_catch_typeinfo, Target::Static, GenericRequirement::None; + Start, sym::start, start_fn, Target::Fn, GenericRequirement::Exact(1); - OwnedBox, owned_box, owned_box, Target::Struct, GenericRequirement::Minimum(1); + EhPersonality, sym::eh_personality, eh_personality, Target::Fn, GenericRequirement::None; + EhCatchTypeinfo, sym::eh_catch_typeinfo, eh_catch_typeinfo, Target::Static, GenericRequirement::None; - PhantomData, phantom_data, phantom_data, Target::Struct, GenericRequirement::Exact(1); + OwnedBox, sym::owned_box, owned_box, Target::Struct, GenericRequirement::Minimum(1); - ManuallyDrop, manually_drop, manually_drop, Target::Struct, GenericRequirement::None; + PhantomData, sym::phantom_data, phantom_data, Target::Struct, GenericRequirement::Exact(1); - MaybeUninit, maybe_uninit, maybe_uninit, Target::Union, GenericRequirement::None; + ManuallyDrop, sym::manually_drop, manually_drop, Target::Struct, GenericRequirement::None; + + MaybeUninit, sym::maybe_uninit, maybe_uninit, Target::Union, GenericRequirement::None; /// Align offset for stride != 1; must not panic. - AlignOffset, align_offset, align_offset_fn, Target::Fn, GenericRequirement::None; + AlignOffset, sym::align_offset, align_offset_fn, Target::Fn, GenericRequirement::None; - Termination, termination, termination, Target::Trait, GenericRequirement::None; + Termination, sym::termination, termination, Target::Trait, GenericRequirement::None; - Try, Try, try_trait, Target::Trait, GenericRequirement::None; + Try, sym::Try, try_trait, Target::Trait, GenericRequirement::None; - Tuple, tuple_trait, tuple_trait, Target::Trait, GenericRequirement::Exact(0); + Tuple, sym::tuple_trait, tuple_trait, Target::Trait, GenericRequirement::Exact(0); - SliceLen, slice_len_fn, slice_len_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; + SliceLen, sym::slice_len_fn, slice_len_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; // Language items from AST lowering - TryTraitFromResidual, from_residual, from_residual_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - TryTraitFromOutput, from_output, from_output_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - TryTraitBranch, branch, branch_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - TryTraitFromYeet, from_yeet, from_yeet_fn, Target::Fn, GenericRequirement::None; + TryTraitFromResidual, sym::from_residual, from_residual_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + TryTraitFromOutput, sym::from_output, from_output_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + TryTraitBranch, sym::branch, branch_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + TryTraitFromYeet, sym::from_yeet, from_yeet_fn, Target::Fn, GenericRequirement::None; - PointerSized, pointer_sized, pointer_sized, Target::Trait, GenericRequirement::Exact(0); + PointerLike, sym::pointer_like, pointer_like, Target::Trait, GenericRequirement::Exact(0); - Poll, Poll, poll, Target::Enum, GenericRequirement::None; - PollReady, Ready, poll_ready_variant, Target::Variant, GenericRequirement::None; - PollPending, Pending, poll_pending_variant, Target::Variant, GenericRequirement::None; + ConstParamTy, sym::const_param_ty, const_param_ty_trait, Target::Trait, GenericRequirement::Exact(0); + + Poll, sym::Poll, poll, Target::Enum, GenericRequirement::None; + PollReady, sym::Ready, poll_ready_variant, Target::Variant, GenericRequirement::None; + PollPending, sym::Pending, poll_pending_variant, Target::Variant, GenericRequirement::None; // FIXME(swatinem): the following lang items are used for async lowering and // should become obsolete eventually. - ResumeTy, ResumeTy, resume_ty, Target::Struct, GenericRequirement::None; - IdentityFuture, identity_future, identity_future_fn, Target::Fn, GenericRequirement::None; - GetContext, get_context, get_context_fn, Target::Fn, GenericRequirement::None; + ResumeTy, sym::ResumeTy, resume_ty, Target::Struct, GenericRequirement::None; + GetContext, sym::get_context, get_context_fn, Target::Fn, GenericRequirement::None; - Context, Context, context, Target::Struct, GenericRequirement::None; - FuturePoll, poll, future_poll_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + Context, sym::Context, context, Target::Struct, GenericRequirement::None; + FuturePoll, sym::poll, future_poll_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - FromFrom, from, from_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + Option, sym::Option, option_type, Target::Enum, GenericRequirement::None; + OptionSome, sym::Some, option_some_variant, Target::Variant, GenericRequirement::None; + OptionNone, sym::None, option_none_variant, Target::Variant, GenericRequirement::None; - OptionSome, Some, option_some_variant, Target::Variant, GenericRequirement::None; - OptionNone, None, option_none_variant, Target::Variant, GenericRequirement::None; + ResultOk, sym::Ok, result_ok_variant, Target::Variant, GenericRequirement::None; + ResultErr, sym::Err, result_err_variant, Target::Variant, GenericRequirement::None; - ResultOk, Ok, result_ok_variant, Target::Variant, GenericRequirement::None; - ResultErr, Err, result_err_variant, Target::Variant, GenericRequirement::None; + ControlFlowContinue, sym::Continue, cf_continue_variant, Target::Variant, GenericRequirement::None; + ControlFlowBreak, sym::Break, cf_break_variant, Target::Variant, GenericRequirement::None; - ControlFlowContinue, Continue, cf_continue_variant, Target::Variant, GenericRequirement::None; - ControlFlowBreak, Break, cf_break_variant, Target::Variant, GenericRequirement::None; + IntoFutureIntoFuture, sym::into_future, into_future_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + IntoIterIntoIter, sym::into_iter, into_iter_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + IteratorNext, sym::next, next_fn, Target::Method(MethodKind::Trait { body: false}), GenericRequirement::None; - IntoFutureIntoFuture, into_future, into_future_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - IntoIterIntoIter, into_iter, into_iter_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; - IteratorNext, next, next_fn, Target::Method(MethodKind::Trait { body: false}), GenericRequirement::None; + PinNewUnchecked, sym::new_unchecked, new_unchecked_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; - PinNewUnchecked, new_unchecked, new_unchecked_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; + RangeFrom, sym::RangeFrom, range_from_struct, Target::Struct, GenericRequirement::None; + RangeFull, sym::RangeFull, range_full_struct, Target::Struct, GenericRequirement::None; + RangeInclusiveStruct, sym::RangeInclusive, range_inclusive_struct, Target::Struct, GenericRequirement::None; + RangeInclusiveNew, sym::range_inclusive_new, range_inclusive_new_method, Target::Method(MethodKind::Inherent), GenericRequirement::None; + Range, sym::Range, range_struct, Target::Struct, GenericRequirement::None; + RangeToInclusive, sym::RangeToInclusive, range_to_inclusive_struct, Target::Struct, GenericRequirement::None; + RangeTo, sym::RangeTo, range_to_struct, Target::Struct, GenericRequirement::None; - RangeFrom, RangeFrom, range_from_struct, Target::Struct, GenericRequirement::None; - RangeFull, RangeFull, range_full_struct, Target::Struct, GenericRequirement::None; - RangeInclusiveStruct, RangeInclusive, range_inclusive_struct, Target::Struct, GenericRequirement::None; - RangeInclusiveNew, range_inclusive_new, range_inclusive_new_method, Target::Method(MethodKind::Inherent), GenericRequirement::None; - Range, Range, range_struct, Target::Struct, GenericRequirement::None; - RangeToInclusive, RangeToInclusive, range_to_inclusive_struct, Target::Struct, GenericRequirement::None; - RangeTo, RangeTo, range_to_struct, Target::Struct, GenericRequirement::None; - - String, String, string, Target::Struct, GenericRequirement::None; + String, sym::String, string, Target::Struct, GenericRequirement::None; + CStr, sym::CStr, c_str, Target::Struct, GenericRequirement::None; } diff --git a/crates/hir-ty/src/consteval/tests.rs b/crates/hir-ty/src/consteval/tests.rs index 41e0b5188b3..167854f3edd 100644 --- a/crates/hir-ty/src/consteval/tests.rs +++ b/crates/hir-ty/src/consteval/tests.rs @@ -1829,6 +1829,38 @@ fn byte_string() { ); } +#[test] +fn c_string() { + check_number( + r#" +//- minicore: index, slice +#[lang = "CStr"] +pub struct CStr { + inner: [u8] +} +const GOAL: u8 = { + let a = c"hello"; + a.inner[0] +}; + "#, + 104, + ); + check_number( + r#" +//- minicore: index, slice +#[lang = "CStr"] +pub struct CStr { + inner: [u8] +} +const GOAL: u8 = { + let a = c"hello"; + a.inner[6] +}; + "#, + 0, + ); +} + #[test] fn consts() { check_number( diff --git a/crates/hir-ty/src/infer/expr.rs b/crates/hir-ty/src/infer/expr.rs index 385766fdad0..56438866de0 100644 --- a/crates/hir-ty/src/infer/expr.rs +++ b/crates/hir-ty/src/infer/expr.rs @@ -13,7 +13,7 @@ hir::{ ArithOp, Array, BinaryOp, ClosureKind, Expr, ExprId, LabelId, Literal, Statement, UnaryOp, }, - lang_item::LangItem, + lang_item::{LangItem, LangItemTarget}, path::{GenericArg, GenericArgs}, BlockId, ConstParamId, FieldId, ItemContainerId, Lookup, }; @@ -815,7 +815,7 @@ fn infer_expr_inner(&mut self, tgt_expr: ExprId, expected: &Expectation) -> Ty { Expr::Array(array) => self.infer_expr_array(array, expected), Expr::Literal(lit) => match lit { Literal::Bool(..) => self.result.standard_types.bool_.clone(), - Literal::String(..) | Literal::CString(..) => { + Literal::String(..) => { TyKind::Ref(Mutability::Not, static_lifetime(), TyKind::Str.intern(Interner)) .intern(Interner) } @@ -831,6 +831,20 @@ fn infer_expr_inner(&mut self, tgt_expr: ExprId, expected: &Expectation) -> Ty { let array_type = TyKind::Array(byte_type, len).intern(Interner); TyKind::Ref(Mutability::Not, static_lifetime(), array_type).intern(Interner) } + Literal::CString(..) => TyKind::Ref( + Mutability::Not, + static_lifetime(), + self.resolve_lang_item(LangItem::CStr) + .and_then(LangItemTarget::as_struct) + .map_or_else( + || self.err_ty(), + |strukt| { + TyKind::Adt(AdtId(strukt.into()), Substitution::empty(Interner)) + .intern(Interner) + }, + ), + ) + .intern(Interner), Literal::Char(..) => TyKind::Scalar(Scalar::Char).intern(Interner), Literal::Int(_v, ty) => match ty { Some(int_ty) => { diff --git a/crates/hir-ty/src/tests/simple.rs b/crates/hir-ty/src/tests/simple.rs index e249cddc2fc..942d693140f 100644 --- a/crates/hir-ty/src/tests/simple.rs +++ b/crates/hir-ty/src/tests/simple.rs @@ -3557,3 +3557,18 @@ fn main() { "#, ); } + +#[test] +fn cstring_literals() { + check_types( + r#" +#[lang = "CStr"] +pub struct CStr; + +fn main() { + c"ello"; + //^^^^^^^ &CStr +} +"#, + ); +}