Struct rustc_hir::lang_items::LanguageItems

pub struct LanguageItems {
    pub items: Vec<Option<DefId>>,
    pub missing: Vec<LangItem>,
    pub groups: [Vec<DefId>; 2],
}

All of the language items, defined or not. Defined lang items can come from the current crate or its dependencies.

Fields

items: Vec<Option<DefId>>

Mappings from lang items to their possibly found DefIds. The index corresponds to the order in LangItem.

missing: Vec<LangItem>

Lang items that were not found during collection.

groups: [Vec<DefId>; 2]

Mapping from LangItemGroup discriminants to all DefIds of lang items in that group.

Implementations

impl LanguageItems

pub fn new() -> Self

Construct an empty collection of lang items and no missing ones.

pub fn items(&self) -> &[Option<DefId>]

Returns the mappings to the possibly found DefIds for each lang item.

pub fn require(&self, it: LangItem) -> Result<DefId, LangItemError>

Requires that a given LangItem was bound and returns the corresponding DefId. If it wasn’t bound, e.g. due to a missing #[lang = "<it.name()>"], returns an error encapsulating the LangItem.

pub fn group(&self, group: LangItemGroup) -> &[DefId]

Returns the DefIds of all lang items in a group.

pub fn sized_trait(&self) -> Option<DefId>

Returns the DefId of the sized lang item if it is defined.

pub fn unsize_trait(&self) -> Option<DefId>

Returns the DefId of the unsize lang item if it is defined.

pub fn structural_peq_trait(&self) -> Option<DefId>

Returns the DefId of the structural_peq lang item if it is defined.

pub fn structural_teq_trait(&self) -> Option<DefId>

Returns the DefId of the structural_teq lang item if it is defined.

pub fn copy_trait(&self) -> Option<DefId>

Returns the DefId of the copy lang item if it is defined.

pub fn clone_trait(&self) -> Option<DefId>

Returns the DefId of the clone lang item if it is defined.

pub fn sync_trait(&self) -> Option<DefId>

Returns the DefId of the sync lang item if it is defined.

pub fn discriminant_kind_trait(&self) -> Option<DefId>

Returns the DefId of the discriminant_kind lang item if it is defined.

pub fn discriminant_type(&self) -> Option<DefId>

Returns the DefId of the discriminant_type lang item if it is defined.

pub fn pointee_trait(&self) -> Option<DefId>

Returns the DefId of the pointee_trait lang item if it is defined.

pub fn metadata_type(&self) -> Option<DefId>

Returns the DefId of the metadata_type lang item if it is defined.

pub fn dyn_metadata(&self) -> Option<DefId>

Returns the DefId of the dyn_metadata lang item if it is defined.

pub fn freeze_trait(&self) -> Option<DefId>

Returns the DefId of the freeze lang item if it is defined.

pub fn drop_trait(&self) -> Option<DefId>

Returns the DefId of the drop lang item if it is defined.

pub fn destruct_trait(&self) -> Option<DefId>

Returns the DefId of the destruct lang item if it is defined.

pub fn coerce_unsized_trait(&self) -> Option<DefId>

Returns the DefId of the coerce_unsized lang item if it is defined.

pub fn dispatch_from_dyn_trait(&self) -> Option<DefId>

Returns the DefId of the dispatch_from_dyn lang item if it is defined.

pub fn transmute_opts(&self) -> Option<DefId>

Returns the DefId of the transmute_opts lang item if it is defined.

pub fn transmute_trait(&self) -> Option<DefId>

Returns the DefId of the transmute_trait lang item if it is defined.

pub fn add_trait(&self) -> Option<DefId>

Returns the DefId of the add lang item if it is defined.

pub fn sub_trait(&self) -> Option<DefId>

Returns the DefId of the sub lang item if it is defined.

pub fn mul_trait(&self) -> Option<DefId>

Returns the DefId of the mul lang item if it is defined.

pub fn div_trait(&self) -> Option<DefId>

Returns the DefId of the div lang item if it is defined.

pub fn rem_trait(&self) -> Option<DefId>

Returns the DefId of the rem lang item if it is defined.

pub fn neg_trait(&self) -> Option<DefId>

Returns the DefId of the neg lang item if it is defined.

pub fn not_trait(&self) -> Option<DefId>

Returns the DefId of the not lang item if it is defined.

pub fn bitxor_trait(&self) -> Option<DefId>

Returns the DefId of the bitxor lang item if it is defined.

pub fn bitand_trait(&self) -> Option<DefId>

Returns the DefId of the bitand lang item if it is defined.

pub fn bitor_trait(&self) -> Option<DefId>

Returns the DefId of the bitor lang item if it is defined.

pub fn shl_trait(&self) -> Option<DefId>

Returns the DefId of the shl lang item if it is defined.

pub fn shr_trait(&self) -> Option<DefId>

Returns the DefId of the shr lang item if it is defined.

pub fn add_assign_trait(&self) -> Option<DefId>

Returns the DefId of the add_assign lang item if it is defined.

pub fn sub_assign_trait(&self) -> Option<DefId>

Returns the DefId of the sub_assign lang item if it is defined.

pub fn mul_assign_trait(&self) -> Option<DefId>

Returns the DefId of the mul_assign lang item if it is defined.

pub fn div_assign_trait(&self) -> Option<DefId>

Returns the DefId of the div_assign lang item if it is defined.

pub fn rem_assign_trait(&self) -> Option<DefId>

Returns the DefId of the rem_assign lang item if it is defined.

pub fn bitxor_assign_trait(&self) -> Option<DefId>

Returns the DefId of the bitxor_assign lang item if it is defined.

pub fn bitand_assign_trait(&self) -> Option<DefId>

Returns the DefId of the bitand_assign lang item if it is defined.

pub fn bitor_assign_trait(&self) -> Option<DefId>

Returns the DefId of the bitor_assign lang item if it is defined.

pub fn shl_assign_trait(&self) -> Option<DefId>

Returns the DefId of the shl_assign lang item if it is defined.

pub fn shr_assign_trait(&self) -> Option<DefId>

Returns the DefId of the shr_assign lang item if it is defined.

pub fn index_trait(&self) -> Option<DefId>

Returns the DefId of the index lang item if it is defined.

pub fn index_mut_trait(&self) -> Option<DefId>

Returns the DefId of the index_mut lang item if it is defined.

pub fn unsafe_cell_type(&self) -> Option<DefId>

Returns the DefId of the unsafe_cell lang item if it is defined.

pub fn va_list(&self) -> Option<DefId>

Returns the DefId of the va_list lang item if it is defined.

pub fn deref_trait(&self) -> Option<DefId>

Returns the DefId of the deref lang item if it is defined.

pub fn deref_mut_trait(&self) -> Option<DefId>

Returns the DefId of the deref_mut lang item if it is defined.

pub fn deref_target(&self) -> Option<DefId>

Returns the DefId of the deref_target lang item if it is defined.

pub fn receiver_trait(&self) -> Option<DefId>

Returns the DefId of the receiver lang item if it is defined.

pub fn fn_trait(&self) -> Option<DefId>

Returns the DefId of the Fn lang item if it is defined.

pub fn fn_mut_trait(&self) -> Option<DefId>

Returns the DefId of the fn_mut lang item if it is defined.

pub fn fn_once_trait(&self) -> Option<DefId>

Returns the DefId of the fn_once lang item if it is defined.

pub fn fn_once_output(&self) -> Option<DefId>

Returns the DefId of the fn_once_output lang item if it is defined.

pub fn future_trait(&self) -> Option<DefId>

Returns the DefId of the future_trait lang item if it is defined.

pub fn gen_state(&self) -> Option<DefId>

Returns the DefId of the generator_state lang item if it is defined.

pub fn gen_trait(&self) -> Option<DefId>

Returns the DefId of the generator lang item if it is defined.

pub fn unpin_trait(&self) -> Option<DefId>

Returns the DefId of the unpin lang item if it is defined.

pub fn pin_type(&self) -> Option<DefId>

Returns the DefId of the pin lang item if it is defined.

pub fn eq_trait(&self) -> Option<DefId>

Returns the DefId of the eq lang item if it is defined.

pub fn partial_ord_trait(&self) -> Option<DefId>

Returns the DefId of the partial_ord lang item if it is defined.

pub fn panic_fn(&self) -> Option<DefId>

Returns the DefId of the panic lang item if it is defined.

pub fn panic_fmt(&self) -> Option<DefId>

Returns the DefId of the panic_fmt lang item if it is defined.

pub fn panic_display(&self) -> Option<DefId>

Returns the DefId of the panic_display lang item if it is defined.

pub fn const_panic_fmt(&self) -> Option<DefId>

Returns the DefId of the const_panic_fmt lang item if it is defined.

pub fn panic_bounds_check_fn(&self) -> Option<DefId>

Returns the DefId of the panic_bounds_check lang item if it is defined.

pub fn panic_info(&self) -> Option<DefId>

Returns the DefId of the panic_info lang item if it is defined.

pub fn panic_location(&self) -> Option<DefId>

Returns the DefId of the panic_location lang item if it is defined.

pub fn panic_impl(&self) -> Option<DefId>

Returns the DefId of the panic_impl lang item if it is defined.

pub fn panic_no_unwind(&self) -> Option<DefId>

Returns the DefId of the panic_no_unwind lang item if it is defined.

pub fn begin_panic_fn(&self) -> Option<DefId>

Returns the DefId of the begin_panic lang item if it is defined.

pub fn exchange_malloc_fn(&self) -> Option<DefId>

Returns the DefId of the exchange_malloc lang item if it is defined.

pub fn box_free_fn(&self) -> Option<DefId>

Returns the DefId of the box_free lang item if it is defined.

pub fn drop_in_place_fn(&self) -> Option<DefId>

Returns the DefId of the drop_in_place lang item if it is defined.

pub fn oom(&self) -> Option<DefId>

Returns the DefId of the oom lang item if it is defined.

pub fn alloc_layout(&self) -> Option<DefId>

Returns the DefId of the alloc_layout lang item if it is defined.

pub fn start_fn(&self) -> Option<DefId>

Returns the DefId of the start lang item if it is defined.

pub fn eh_personality(&self) -> Option<DefId>

Returns the DefId of the eh_personality lang item if it is defined.

pub fn eh_catch_typeinfo(&self) -> Option<DefId>

Returns the DefId of the eh_catch_typeinfo lang item if it is defined.

pub fn owned_box(&self) -> Option<DefId>

Returns the DefId of the owned_box lang item if it is defined.

pub fn phantom_data(&self) -> Option<DefId>

Returns the DefId of the phantom_data lang item if it is defined.

pub fn manually_drop(&self) -> Option<DefId>

Returns the DefId of the manually_drop lang item if it is defined.

pub fn maybe_uninit(&self) -> Option<DefId>

Returns the DefId of the maybe_uninit lang item if it is defined.

pub fn align_offset_fn(&self) -> Option<DefId>

Returns the DefId of the align_offset lang item if it is defined.

pub fn termination(&self) -> Option<DefId>

Returns the DefId of the termination lang item if it is defined.

pub fn try_trait(&self) -> Option<DefId>

Returns the DefId of the Try lang item if it is defined.

pub fn tuple_trait(&self) -> Option<DefId>

Returns the DefId of the tuple_trait lang item if it is defined.

pub fn slice_len_fn(&self) -> Option<DefId>

Returns the DefId of the slice_len_fn lang item if it is defined.

pub fn from_residual_fn(&self) -> Option<DefId>

Returns the DefId of the from_residual lang item if it is defined.

pub fn from_output_fn(&self) -> Option<DefId>

Returns the DefId of the from_output lang item if it is defined.

pub fn branch_fn(&self) -> Option<DefId>

Returns the DefId of the branch lang item if it is defined.

pub fn from_yeet_fn(&self) -> Option<DefId>

Returns the DefId of the from_yeet lang item if it is defined.

pub fn poll_ready_variant(&self) -> Option<DefId>

Returns the DefId of the Ready lang item if it is defined.

pub fn poll_pending_variant(&self) -> Option<DefId>

Returns the DefId of the Pending lang item if it is defined.

pub fn from_generator_fn(&self) -> Option<DefId>

Returns the DefId of the from_generator lang item if it is defined.

pub fn get_context_fn(&self) -> Option<DefId>

Returns the DefId of the get_context lang item if it is defined.

pub fn future_poll_fn(&self) -> Option<DefId>

Returns the DefId of the poll lang item if it is defined.

pub fn from_fn(&self) -> Option<DefId>

Returns the DefId of the from lang item if it is defined.

pub fn option_some_variant(&self) -> Option<DefId>

Returns the DefId of the Some lang item if it is defined.

pub fn option_none_variant(&self) -> Option<DefId>

Returns the DefId of the None lang item if it is defined.

pub fn result_ok_variant(&self) -> Option<DefId>

Returns the DefId of the Ok lang item if it is defined.

pub fn result_err_variant(&self) -> Option<DefId>

Returns the DefId of the Err lang item if it is defined.

pub fn cf_continue_variant(&self) -> Option<DefId>

Returns the DefId of the Continue lang item if it is defined.

pub fn cf_break_variant(&self) -> Option<DefId>

Returns the DefId of the Break lang item if it is defined.

pub fn into_future_fn(&self) -> Option<DefId>

Returns the DefId of the into_future lang item if it is defined.

pub fn into_iter_fn(&self) -> Option<DefId>

Returns the DefId of the into_iter lang item if it is defined.

pub fn next_fn(&self) -> Option<DefId>

Returns the DefId of the next lang item if it is defined.

pub fn new_unchecked_fn(&self) -> Option<DefId>

Returns the DefId of the new_unchecked lang item if it is defined.

pub fn range_from_struct(&self) -> Option<DefId>

Returns the DefId of the RangeFrom lang item if it is defined.

pub fn range_full_struct(&self) -> Option<DefId>

Returns the DefId of the RangeFull lang item if it is defined.

pub fn range_inclusive_struct(&self) -> Option<DefId>

Returns the DefId of the RangeInclusive lang item if it is defined.

pub fn range_inclusive_new_method(&self) -> Option<DefId>

Returns the DefId of the range_inclusive_new lang item if it is defined.

pub fn range_struct(&self) -> Option<DefId>

Returns the DefId of the Range lang item if it is defined.

pub fn range_to_inclusive_struct(&self) -> Option<DefId>

Returns the DefId of the RangeToInclusive lang item if it is defined.

pub fn range_to_struct(&self) -> Option<DefId>

Returns the DefId of the RangeTo lang item if it is defined.

impl LanguageItems

pub fn is_weak_lang_item(&self, item_def_id: DefId) -> bool

Trait Implementations

impl Debug for LanguageItems

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<__CTX> HashStable<__CTX> for LanguageItemswhere
    __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 96 bytes