Struct rustc::ty::maps::TyCtxtAt

pub struct TyCtxtAt<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> {
    pub tcx: TyCtxt<'a, 'gcx, 'tcx>,
    pub span: Span,
}

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Fields

tcx: TyCtxt<'a, 'gcx, 'tcx>

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span: Span

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Methods

impl<'a, 'tcx, 'lcx> TyCtxtAt<'a, 'tcx, 'lcx>

pub fn type_of(self, key: DefId) -> Ty<'tcx>

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Records the type of every item.

pub fn generics_of(self, key: DefId) -> &'tcx Generics

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Maps from the def-id of an item (trait/struct/enum/fn) to its associated generics and predicates.

pub fn predicates_of(self, key: DefId) -> GenericPredicates<'tcx>

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pub fn super_predicates_of(self, key: DefId) -> GenericPredicates<'tcx>

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Maps from the def-id of a trait to the list of super-predicates. This is a subset of the full list of predicates. We store these in a separate map because we must evaluate them even during type conversion, often before the full predicates are available (note that supertraits have additional acyclicity requirements).

pub fn type_param_predicates(
    self,
    key: (DefId, DefId)
) -> GenericPredicates<'tcx>

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To avoid cycles within the predicates of a single item we compute per-type-parameter predicates for resolving T::AssocTy.

pub fn trait_def(self, key: DefId) -> &'tcx TraitDef

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pub fn adt_def(self, key: DefId) -> &'tcx AdtDef

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pub fn adt_destructor(self, key: DefId) -> Option<Destructor>

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Important traits for &'a [u8]

impl<'a> Read for &'a [u8]impl<'a> Write for &'a mut [u8]

pub fn adt_sized_constraint(self, key: DefId) -> &'tcx [Ty<'tcx>]

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pub fn adt_dtorck_constraint(self, key: DefId) -> DtorckConstraint<'tcx>

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pub fn is_const_fn(self, key: DefId) -> bool

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True if this is a const fn

pub fn is_foreign_item(self, key: DefId) -> bool

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True if this is a foreign item (i.e., linked via extern { ... }).

pub fn is_auto_impl(self, key: DefId) -> bool

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True if this is an auto impl (aka impl Foo for ..)

pub fn crate_variances(self, key: CrateNum) -> Rc<CrateVariancesMap>

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Get a map with the variance of every item; use item_variance instead.

pub fn variances_of(self, key: DefId) -> Rc<Vec<Variance>>

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Maps from def-id of a type or region parameter to its (inferred) variance.

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn inferred_outlives_of(self, key: DefId) -> Vec<Predicate<'tcx>>

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Maps from def-id of a type to its (inferred) outlives.

pub fn associated_item_def_ids(self, key: DefId) -> Rc<Vec<DefId>>

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Maps from an impl/trait def-id to a list of the def-ids of its items

pub fn associated_item(self, key: DefId) -> AssociatedItem

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Maps from a trait item to the trait item "descriptor"

pub fn impl_trait_ref(self, key: DefId) -> Option<TraitRef<'tcx>>

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pub fn impl_polarity(self, key: DefId) -> ImplPolarity

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pub fn inherent_impls(self, key: DefId) -> Rc<Vec<DefId>>

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Maps a DefId of a type to a list of its inherent impls. Contains implementations of methods that are inherent to a type. Methods in these implementations don't need to be exported.

pub fn mir_keys(self, key: CrateNum) -> Rc<DefIdSet>

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Set of all the def-ids in this crate that have MIR associated with them. This includes all the body owners, but also things like struct constructors.

pub fn mir_const_qualif(self, key: DefId) -> (u8, Rc<IdxSetBuf<Local>>)

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Maps DefId's that have an associated Mir to the result of the MIR qualify_consts pass. The actual meaning of the value isn't known except to the pass itself.

pub fn mir_built(self, key: DefId) -> &'tcx Steal<Mir<'tcx>>

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Fetch the MIR for a given def-id right after it's built - this includes unreachable code.

pub fn mir_const(self, key: DefId) -> &'tcx Steal<Mir<'tcx>>

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Fetch the MIR for a given def-id up till the point where it is ready for const evaluation.

See the README for the mir module for details.

pub fn mir_validated(self, key: DefId) -> &'tcx Steal<Mir<'tcx>>

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pub fn optimized_mir(self, key: DefId) -> &'tcx Mir<'tcx>

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MIR after our optimization passes have run. This is MIR that is ready for trans. This is also the only query that can fetch non-local MIR, at present.

pub fn unsafety_check_result(self, key: DefId) -> UnsafetyCheckResult

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The result of unsafety-checking this def-id.

pub fn unsafe_derive_on_repr_packed(self, key: DefId)

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HACK: when evaluated, this reports a "unsafe derive on repr(packed)" error

pub fn fn_sig(self, key: DefId) -> PolyFnSig<'tcx>

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The signature of functions and closures.

pub fn coerce_unsized_info(self, key: DefId) -> CoerceUnsizedInfo

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Caches CoerceUnsized kinds for impls on custom types.

pub fn typeck_item_bodies(self, key: CrateNum) -> CompileResult

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pub fn typeck_tables_of(self, key: DefId) -> &'tcx TypeckTables<'tcx>

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pub fn used_trait_imports(self, key: DefId) -> Rc<DefIdSet>

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pub fn has_typeck_tables(self, key: DefId) -> bool

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pub fn coherent_trait(self, key: (CrateNum, DefId))

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pub fn borrowck(self, key: DefId) -> Rc<BorrowCheckResult>

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pub fn mir_borrowck(self, key: DefId) -> Option<ClosureRegionRequirements>

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Borrow checks the function body. If this is a closure, returns additional requirements that the closure's creator must verify.

pub fn crate_inherent_impls(self, key: CrateNum) -> CrateInherentImpls

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Gets a complete map from all types to their inherent impls. Not meant to be used directly outside of coherence. (Defined only for LOCAL_CRATE)

pub fn crate_inherent_impls_overlap_check(self, key: CrateNum)

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Checks all types in the krate for overlap in their inherent impls. Reports errors. Not meant to be used directly outside of coherence. (Defined only for LOCAL_CRATE)

pub fn const_eval(
    self,
    key: ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>
) -> EvalResult<'tcx>

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Results of evaluating const items or constants embedded in other items (such as enum variant explicit discriminants).

pub fn check_match(self, key: DefId) -> Result<(), ErrorReported>

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pub fn privacy_access_levels(self, key: CrateNum) -> Rc<AccessLevels>

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Performs the privacy check and computes "access levels".

pub fn reachable_set(self, key: CrateNum) -> ReachableSet

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pub fn region_scope_tree(self, key: DefId) -> Rc<ScopeTree>

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Per-body region::ScopeTree. The DefId should be the owner-def-id for the body; in the case of closures, this will be redirected to the enclosing function.

pub fn mir_shims(self, key: InstanceDef<'tcx>) -> &'tcx Mir<'tcx>

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pub fn def_symbol_name(self, key: DefId) -> SymbolName

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pub fn symbol_name(self, key: Instance<'tcx>) -> SymbolName

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pub fn describe_def(self, key: DefId) -> Option<Def>

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pub fn def_span(self, key: DefId) -> Span

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pub fn lookup_stability(self, key: DefId) -> Option<&'tcx Stability>

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pub fn lookup_deprecation_entry(self, key: DefId) -> Option<DeprecationEntry>

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pub fn item_attrs(self, key: DefId) -> Rc<[Attribute]>

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Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn fn_arg_names(self, key: DefId) -> Vec<Name>

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pub fn impl_parent(self, key: DefId) -> Option<DefId>

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pub fn trait_of_item(self, key: DefId) -> Option<DefId>

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pub fn is_exported_symbol(self, key: DefId) -> bool

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pub fn item_body_nested_bodies(self, key: DefId) -> ExternBodyNestedBodies

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pub fn const_is_rvalue_promotable_to_static(self, key: DefId) -> bool

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pub fn rvalue_promotable_map(self, key: DefId) -> Rc<ItemLocalSet>

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pub fn is_mir_available(self, key: DefId) -> bool

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pub fn vtable_methods(
    self,
    key: PolyTraitRef<'tcx>
) -> Rc<Vec<Option<(DefId, &'tcx Substs<'tcx>)>>>

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pub fn trans_fulfill_obligation(
    self,
    key: (ParamEnv<'tcx>, PolyTraitRef<'tcx>)
) -> Vtable<'tcx, ()>

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pub fn trait_impls_of(self, key: DefId) -> Rc<TraitImpls>

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pub fn specialization_graph_of(self, key: DefId) -> Rc<Graph>

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pub fn is_object_safe(self, key: DefId) -> bool

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pub fn param_env(self, key: DefId) -> ParamEnv<'tcx>

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pub fn is_copy_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool

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pub fn is_sized_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool

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pub fn is_freeze_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool

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pub fn needs_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool

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pub fn layout_raw(
    self,
    key: ParamEnvAnd<'tcx, Ty<'tcx>>
) -> Result<&'tcx LayoutDetails, LayoutError<'tcx>>

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pub fn dylib_dependency_formats(
    self,
    key: CrateNum
) -> Rc<Vec<(CrateNum, LinkagePreference)>>

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pub fn is_panic_runtime(self, key: CrateNum) -> bool

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pub fn is_compiler_builtins(self, key: CrateNum) -> bool

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pub fn has_global_allocator(self, key: CrateNum) -> bool

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pub fn is_sanitizer_runtime(self, key: CrateNum) -> bool

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pub fn is_profiler_runtime(self, key: CrateNum) -> bool

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pub fn panic_strategy(self, key: CrateNum) -> PanicStrategy

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pub fn is_no_builtins(self, key: CrateNum) -> bool

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pub fn extern_crate(self, key: DefId) -> Rc<Option<ExternCrate>>

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pub fn specializes(self, key: (DefId, DefId)) -> bool

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pub fn in_scope_traits_map(
    self,
    key: DefIndex
) -> Option<Rc<FxHashMap<ItemLocalId, Rc<StableVec<TraitCandidate>>>>>

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pub fn module_exports(self, key: DefId) -> Option<Rc<Vec<Export>>>

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pub fn lint_levels(self, key: CrateNum) -> Rc<LintLevelMap>

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pub fn impl_defaultness(self, key: DefId) -> Defaultness

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pub fn exported_symbol_ids(self, key: CrateNum) -> Rc<DefIdSet>

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pub fn native_libraries(self, key: CrateNum) -> Rc<Vec<NativeLibrary>>

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pub fn plugin_registrar_fn(self, key: CrateNum) -> Option<DefId>

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pub fn derive_registrar_fn(self, key: CrateNum) -> Option<DefId>

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pub fn crate_disambiguator(self, key: CrateNum) -> CrateDisambiguator

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pub fn crate_hash(self, key: CrateNum) -> Svh

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pub fn original_crate_name(self, key: CrateNum) -> Symbol

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pub fn implementations_of_trait(self, key: (CrateNum, DefId)) -> Rc<Vec<DefId>>

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pub fn all_trait_implementations(self, key: CrateNum) -> Rc<Vec<DefId>>

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pub fn is_dllimport_foreign_item(self, key: DefId) -> bool

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pub fn is_statically_included_foreign_item(self, key: DefId) -> bool

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pub fn native_library_kind(self, key: DefId) -> Option<NativeLibraryKind>

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pub fn link_args(self, key: CrateNum) -> Rc<Vec<String>>

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pub fn resolve_lifetimes(self, key: CrateNum) -> Rc<ResolveLifetimes>

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pub fn named_region_map(
    self,
    key: DefIndex
) -> Option<Rc<FxHashMap<ItemLocalId, Region>>>

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pub fn is_late_bound_map(
    self,
    key: DefIndex
) -> Option<Rc<FxHashSet<ItemLocalId>>>

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pub fn object_lifetime_defaults_map(
    self,
    key: DefIndex
) -> Option<Rc<FxHashMap<ItemLocalId, Rc<Vec<ObjectLifetimeDefault>>>>>

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pub fn visibility(self, key: DefId) -> Visibility

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pub fn dep_kind(self, key: CrateNum) -> DepKind

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pub fn crate_name(self, key: CrateNum) -> Symbol

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pub fn item_children(self, key: DefId) -> Rc<Vec<Export>>

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pub fn extern_mod_stmt_cnum(self, key: DefId) -> Option<CrateNum>

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pub fn get_lang_items(self, key: CrateNum) -> Rc<LanguageItems>

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pub fn defined_lang_items(self, key: CrateNum) -> Rc<Vec<(DefId, usize)>>

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pub fn missing_lang_items(self, key: CrateNum) -> Rc<Vec<LangItem>>

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pub fn extern_const_body(self, key: DefId) -> ExternConstBody<'tcx>

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pub fn visible_parent_map(self, key: CrateNum) -> Rc<DefIdMap<DefId>>

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pub fn missing_extern_crate_item(self, key: CrateNum) -> bool

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pub fn used_crate_source(self, key: CrateNum) -> Rc<CrateSource>

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pub fn postorder_cnums(self, key: CrateNum) -> Rc<Vec<CrateNum>>

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pub fn freevars(self, key: DefId) -> Option<Rc<Vec<Freevar>>>

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pub fn maybe_unused_trait_import(self, key: DefId) -> bool

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pub fn maybe_unused_extern_crates(self, key: CrateNum) -> Rc<Vec<(DefId, Span)>>

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pub fn stability_index(self, key: CrateNum) -> Rc<Index<'tcx>>

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pub fn all_crate_nums(self, key: CrateNum) -> Rc<Vec<CrateNum>>

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pub fn exported_symbols(
    self,
    key: CrateNum
) -> Arc<Vec<(String, Option<DefId>, SymbolExportLevel)>>

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pub fn collect_and_partition_translation_items(
    self,
    key: CrateNum
) -> (Arc<DefIdSet>, Arc<Vec<Arc<CodegenUnit<'tcx>>>>)

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pub fn export_name(self, key: DefId) -> Option<Symbol>

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pub fn contains_extern_indicator(self, key: DefId) -> bool

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pub fn is_translated_function(self, key: DefId) -> bool

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pub fn codegen_unit(self, key: InternedString) -> Arc<CodegenUnit<'tcx>>

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pub fn compile_codegen_unit(self, key: InternedString) -> Stats

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pub fn output_filenames(self, key: CrateNum) -> Arc<OutputFilenames>

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pub fn has_copy_closures(self, key: CrateNum) -> bool

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pub fn has_clone_closures(self, key: CrateNum) -> bool

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pub fn erase_regions_ty(self, key: Ty<'tcx>) -> Ty<'tcx>

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pub fn fully_normalize_monormophic_ty(self, key: Ty<'tcx>) -> Ty<'tcx>

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Methods from Deref<Target = TyCtxt<'a, 'gcx, 'tcx>>

pub fn require_lang_item(&self, lang_item: LangItem) -> DefId

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pub fn liberate_late_bound_regions<T>(
    &self,
    all_outlive_scope: DefId,
    value: &Binder<T>
) -> T where
    T: TypeFoldable<'tcx>, 

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Replace any late-bound regions bound in value with free variants attached to all_outlive_scope.

pub fn collect_constrained_late_bound_regions<T>(
    &self,
    value: &Binder<T>
) -> FxHashSet<BoundRegion> where
    T: TypeFoldable<'tcx>, 

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Returns a set of all late-bound regions that are constrained by value, meaning that if we instantiate those LBR with variables and equate value with something else, those variables will also be equated.

pub fn collect_referenced_late_bound_regions<T>(
    &self,
    value: &Binder<T>
) -> FxHashSet<BoundRegion> where
    T: TypeFoldable<'tcx>, 

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Returns a set of all late-bound regions that appear in value anywhere.

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn outlives_components(&self, ty0: Ty<'tcx>) -> Vec<Component<'tcx>>

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Returns all the things that must outlive 'a for the condition ty0: 'a to hold. Note that ty0 must be a fully resolved type.

pub fn const_usize(&self, val: u16) -> ConstInt

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pub fn is_static_mut(&self, def_id: DefId) -> bool

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Check if the node pointed to by def_id is a mutable static item

pub fn consider_optimizing<T: Fn() -> String>(&self, msg: T) -> bool

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Trait Implementations

impl<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> Copy for TyCtxtAt<'a, 'gcx, 'tcx>

impl<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> Clone for TyCtxtAt<'a, 'gcx, 'tcx>

fn clone(&self) -> TyCtxtAt<'a, 'gcx, 'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, 'gcx, 'tcx> Deref for TyCtxtAt<'a, 'gcx, 'tcx>

type Target = TyCtxt<'a, 'gcx, 'tcx>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.