Struct rustc_middle::ty::context::TyCtxt
source · pub struct TyCtxt<'tcx> {
gcx: &'tcx GlobalCtxt<'tcx>,
}
Expand description
The central data structure of the compiler. It stores references to the various arenas and also houses the results of the various compiler queries that have been performed. See the rustc dev guide for more details.
An implementation detail: TyCtxt
is a wrapper type for GlobalCtxt,
which is the struct that actually holds all the data. TyCtxt
derefs to
GlobalCtxt
, and in practice TyCtxt
is passed around everywhere, and all
operations are done via TyCtxt
. A TyCtxt
is obtained for a GlobalCtxt
by calling enter
with a closure f
. That function creates both the
TyCtxt
, and an ImplicitCtxt
around it that is put into TLS. Within f
:
- The
ImplicitCtxt
is available implicitly via TLS. - The
TyCtxt
is available explicitly via thetcx
parameter, and also implicitly within theImplicitCtxt
. Explicit access is preferred when possible.
Fields§
§gcx: &'tcx GlobalCtxt<'tcx>
Implementations§
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
fn expect_hir_owner_nodes(self, def_id: LocalDefId) -> &'tcx OwnerNodes<'tcx>
pub fn hir_owner_nodes(self, owner_id: OwnerId) -> &'tcx OwnerNodes<'tcx>
fn opt_hir_owner_node(self, def_id: LocalDefId) -> Option<OwnerNode<'tcx>>
pub fn expect_hir_owner_node(self, def_id: LocalDefId) -> OwnerNode<'tcx>
pub fn hir_owner_node(self, owner_id: OwnerId) -> OwnerNode<'tcx>
sourcepub fn hir_node_by_def_id(self, id: LocalDefId) -> Node<'tcx>
pub fn hir_node_by_def_id(self, id: LocalDefId) -> Node<'tcx>
Retrieves the hir::Node
corresponding to id
.
sourcepub fn parent_hir_id(self, hir_id: HirId) -> HirId
pub fn parent_hir_id(self, hir_id: HirId) -> HirId
Returns HirId
of the parent HIR node of node with this hir_id
.
Returns the same hir_id
if and only if hir_id == CRATE_HIR_ID
.
If calling repeatedly and iterating over parents, prefer Map::parent_iter
.
sourcepub fn parent_hir_node(self, hir_id: HirId) -> Node<'tcx>
pub fn parent_hir_node(self, hir_id: HirId) -> Node<'tcx>
Returns parent HIR node of node with this hir_id
.
Returns HIR node of the same hir_id
if and only if hir_id == CRATE_HIR_ID
.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn hir(self) -> Map<'tcx>
pub fn parent_module(self, id: HirId) -> LocalModDefId
pub fn parent_module_from_def_id(self, id: LocalDefId) -> LocalModDefId
pub fn impl_subject(self, def_id: DefId) -> EarlyBinder<'tcx, ImplSubject<'tcx>>
sourcepub fn is_foreign_item(self, def_id: impl Into<DefId>) -> bool
pub fn is_foreign_item(self, def_id: impl Into<DefId>) -> bool
Returns true
if this is a foreign item (i.e., linked via extern { ... }
).
pub fn hash_owner_nodes( self, node: OwnerNode<'_>, bodies: &SortedMap<ItemLocalId, &Body<'_>>, attrs: &SortedMap<ItemLocalId, &[Attribute]>, ) -> (Option<Fingerprint>, Option<Fingerprint>)
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn try_destructure_mir_constant_for_user_output(
self,
val: ConstValue<'tcx>,
ty: Ty<'tcx>,
) -> Option<DestructuredConstant<'tcx>>
pub fn try_destructure_mir_constant_for_user_output( self, val: ConstValue<'tcx>, ty: Ty<'tcx>, ) -> Option<DestructuredConstant<'tcx>>
Tries to destructure an mir::Const
ADT or array into its variant index
and its field values. This should only be used for pretty printing.
sourcepub fn const_caller_location(
self,
file: Symbol,
line: u32,
col: u32,
) -> ConstValue<'tcx>
pub fn const_caller_location( self, file: Symbol, line: u32, col: u32, ) -> ConstValue<'tcx>
Getting a &core::panic::Location referring to a span.
sourcepub fn is_eligible_for_coverage(self, key: LocalDefId) -> bool
pub fn is_eligible_for_coverage(self, key: LocalDefId) -> bool
Returns true
if this def is a function-like thing that is eligible for
coverage instrumentation under -Cinstrument-coverage
.
(Eligible functions might nevertheless be skipped for other reasons.)
sourcepub fn build_mir(self, key: LocalDefId) -> Body<'tcx>
pub fn build_mir(self, key: LocalDefId) -> Body<'tcx>
Create the MIR for a given DefId
- this includes
unreachable code.
You do not want to call this yourself, instead use the cached version
via mir_built
sourcepub fn import_source_files(self, key: CrateNum)
pub fn import_source_files(self, key: CrateNum)
Imports all SourceFile
s from the given crate into the current session.
This normally happens automatically when we decode a Span
from
that crate’s metadata - however, the incr comp cache needs
to trigger this manually when decoding a foreign Span
pub fn expn_hash_to_expn_id( self, cnum: CrateNum, index_guess: u32, hash: ExpnHash, ) -> ExpnId
sourcepub fn def_path_hash_to_def_id_extern(
self,
hash: DefPathHash,
stable_crate_id: StableCrateId,
) -> DefId
pub fn def_path_hash_to_def_id_extern( self, hash: DefPathHash, stable_crate_id: StableCrateId, ) -> DefId
Converts a DefPathHash
to its corresponding DefId
in the current compilation
session, if it still exists. This is used during incremental compilation to
turn a deserialized DefPathHash
into its current DefId
.
Will fetch a DefId from a DefPathHash for a foreign crate.
sourcepub fn thir_tree(self, key: LocalDefId) -> String
pub fn thir_tree(self, key: LocalDefId) -> String
Create a THIR tree for debugging.
sourcepub fn thir_flat(self, key: LocalDefId) -> String
pub fn thir_flat(self, key: LocalDefId) -> String
Create a list-like THIR representation for debugging.
sourcepub fn should_codegen_locally(self, instance: Instance<'tcx>) -> bool
pub fn should_codegen_locally(self, instance: Instance<'tcx>) -> bool
Returns true
if we should codegen an instance in the local crate, or returns false
if we
can just link to the upstream crate and therefore don’t need a mono item.
source§impl TyCtxt<'_>
impl TyCtxt<'_>
sourcepub fn lint_level_at_node(
self,
lint: &'static Lint,
id: HirId,
) -> (Level, LintLevelSource)
pub fn lint_level_at_node( self, lint: &'static Lint, id: HirId, ) -> (Level, LintLevelSource)
Fetch and return the user-visible lint level for the given lint at the given HirId.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn require_lang_item(self, lang_item: LangItem, span: Option<Span>) -> DefId
pub fn require_lang_item(self, lang_item: LangItem, span: Option<Span>) -> DefId
Returns the DefId
for a given LangItem
.
If not found, fatally aborts compilation.
pub fn is_lang_item(self, def_id: DefId, lang_item: LangItem) -> bool
pub fn as_lang_item(self, def_id: DefId) -> Option<LangItem>
sourcepub fn fn_trait_kind_from_def_id(self, id: DefId) -> Option<ClosureKind>
pub fn fn_trait_kind_from_def_id(self, id: DefId) -> Option<ClosureKind>
sourcepub fn async_fn_trait_kind_from_def_id(self, id: DefId) -> Option<ClosureKind>
pub fn async_fn_trait_kind_from_def_id(self, id: DefId) -> Option<ClosureKind>
Given a DefId
of one of the AsyncFn
, AsyncFnMut
or AsyncFnOnce
traits,
returns a corresponding ty::ClosureKind
.
For any other DefId
return None
.
sourcepub fn fn_trait_kind_to_def_id(self, kind: ClosureKind) -> Option<DefId>
pub fn fn_trait_kind_to_def_id(self, kind: ClosureKind) -> Option<DefId>
Given a ty::ClosureKind
, get the DefId
of its corresponding Fn
-family
trait, if it is defined.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn eval_stability(
self,
def_id: DefId,
id: Option<HirId>,
span: Span,
method_span: Option<Span>,
) -> EvalResult
pub fn eval_stability( self, def_id: DefId, id: Option<HirId>, span: Span, method_span: Option<Span>, ) -> EvalResult
Evaluates the stability of an item.
Returns EvalResult::Allow
if the item is stable, or unstable but the corresponding
#![feature]
has been provided. Returns EvalResult::Deny
which describes the offending
unstable feature otherwise.
If id
is Some(_)
, this function will also check if the item at def_id
has been
deprecated. If the item is indeed deprecated, we will emit a deprecation lint attached to
id
.
sourcepub fn eval_stability_allow_unstable(
self,
def_id: DefId,
id: Option<HirId>,
span: Span,
method_span: Option<Span>,
allow_unstable: AllowUnstable,
) -> EvalResult
pub fn eval_stability_allow_unstable( self, def_id: DefId, id: Option<HirId>, span: Span, method_span: Option<Span>, allow_unstable: AllowUnstable, ) -> EvalResult
Evaluates the stability of an item.
Returns EvalResult::Allow
if the item is stable, or unstable but the corresponding
#![feature]
has been provided. Returns EvalResult::Deny
which describes the offending
unstable feature otherwise.
If id
is Some(_)
, this function will also check if the item at def_id
has been
deprecated. If the item is indeed deprecated, we will emit a deprecation lint attached to
id
.
Pass AllowUnstable::Yes
to allow_unstable
to force an unstable item to be allowed. Deprecation warnings will be emitted normally.
sourcepub fn eval_default_body_stability(
self,
def_id: DefId,
span: Span,
) -> EvalResult
pub fn eval_default_body_stability( self, def_id: DefId, span: Span, ) -> EvalResult
Evaluates the default-impl stability of an item.
Returns EvalResult::Allow
if the item’s default implementation is stable, or unstable but the corresponding
#![feature]
has been provided. Returns EvalResult::Deny
which describes the offending
unstable feature otherwise.
sourcepub fn check_stability(
self,
def_id: DefId,
id: Option<HirId>,
span: Span,
method_span: Option<Span>,
) -> bool
pub fn check_stability( self, def_id: DefId, id: Option<HirId>, span: Span, method_span: Option<Span>, ) -> bool
Checks if an item is stable or error out.
If the item defined by def_id
is unstable and the corresponding #![feature]
does not
exist, emits an error.
This function will also check if the item is deprecated.
If so, and id
is not None
, a deprecated lint attached to id
will be emitted.
Returns true
if item is allowed aka, stable or unstable under an enabled feature.
sourcepub fn check_stability_allow_unstable(
self,
def_id: DefId,
id: Option<HirId>,
span: Span,
method_span: Option<Span>,
allow_unstable: AllowUnstable,
) -> bool
pub fn check_stability_allow_unstable( self, def_id: DefId, id: Option<HirId>, span: Span, method_span: Option<Span>, allow_unstable: AllowUnstable, ) -> bool
Checks if an item is stable or error out.
If the item defined by def_id
is unstable and the corresponding #![feature]
does not
exist, emits an error.
This function will also check if the item is deprecated.
If so, and id
is not None
, a deprecated lint attached to id
will be emitted.
Pass AllowUnstable::Yes
to allow_unstable
to force an unstable item to be allowed. Deprecation warnings will be emitted normally.
Returns true
if item is allowed aka, stable or unstable under an enabled feature.
sourcepub fn check_optional_stability(
self,
def_id: DefId,
id: Option<HirId>,
span: Span,
method_span: Option<Span>,
allow_unstable: AllowUnstable,
unmarked: impl FnOnce(Span, DefId),
) -> bool
pub fn check_optional_stability( self, def_id: DefId, id: Option<HirId>, span: Span, method_span: Option<Span>, allow_unstable: AllowUnstable, unmarked: impl FnOnce(Span, DefId), ) -> bool
Like check_stability
, except that we permit items to have custom behaviour for
missing stability attributes (not necessarily just emit a bug!
). This is necessary
for default generic parameters, which only have stability attributes if they were
added after the type on which they’re defined.
Returns true
if item is allowed aka, stable or unstable under an enabled feature.
pub fn lookup_deprecation(self, id: DefId) -> Option<Deprecation>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
Const-related utilities
pub fn span_as_caller_location(self, span: Span) -> ConstValue<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn const_eval_poly(self, def_id: DefId) -> EvalToConstValueResult<'tcx>
pub fn const_eval_poly(self, def_id: DefId) -> EvalToConstValueResult<'tcx>
Evaluates a constant without providing any generic parameters. This is useful to evaluate consts
that can’t take any generic arguments like const items or enum discriminants. If a
generic parameter is used within the constant ErrorHandled::ToGeneric
will be returned.
sourcepub fn const_eval_poly_to_alloc(
self,
def_id: DefId,
) -> EvalToAllocationRawResult<'tcx>
pub fn const_eval_poly_to_alloc( self, def_id: DefId, ) -> EvalToAllocationRawResult<'tcx>
Evaluates a constant without providing any generic parameters. This is useful to evaluate consts
that can’t take any generic arguments like const items or enum discriminants. If a
generic parameter is used within the constant ErrorHandled::ToGeneric
will be returned.
sourcepub fn const_eval_resolve(
self,
param_env: ParamEnv<'tcx>,
ct: UnevaluatedConst<'tcx>,
span: Span,
) -> EvalToConstValueResult<'tcx>
pub fn const_eval_resolve( self, param_env: ParamEnv<'tcx>, ct: UnevaluatedConst<'tcx>, span: Span, ) -> EvalToConstValueResult<'tcx>
Resolves and evaluates a constant.
The constant can be located on a trait like <A as B>::C
, in which case the given
generic parameters and environment are used to resolve the constant. Alternatively if the
constant has generic parameters in scope the generic parameters are used to evaluate the value of
the constant. For example in fn foo<T>() { let _ = [0; bar::<T>()]; }
the repeat count
constant bar::<T>()
requires a instantiation for T
, if the instantiation for T
is still
too generic for the constant to be evaluated then Err(ErrorHandled::TooGeneric)
is
returned.
pub fn const_eval_resolve_for_typeck( self, param_env: ParamEnv<'tcx>, ct: UnevaluatedConst<'tcx>, span: Span, ) -> EvalToValTreeResult<'tcx>
pub fn const_eval_instance( self, param_env: ParamEnv<'tcx>, instance: Instance<'tcx>, span: Span, ) -> EvalToConstValueResult<'tcx>
sourcepub fn const_eval_global_id(
self,
param_env: ParamEnv<'tcx>,
cid: GlobalId<'tcx>,
span: Span,
) -> EvalToConstValueResult<'tcx>
pub fn const_eval_global_id( self, param_env: ParamEnv<'tcx>, cid: GlobalId<'tcx>, span: Span, ) -> EvalToConstValueResult<'tcx>
Evaluate a constant to a ConstValue
.
sourcepub fn const_eval_global_id_for_typeck(
self,
param_env: ParamEnv<'tcx>,
cid: GlobalId<'tcx>,
span: Span,
) -> EvalToValTreeResult<'tcx>
pub fn const_eval_global_id_for_typeck( self, param_env: ParamEnv<'tcx>, cid: GlobalId<'tcx>, span: Span, ) -> EvalToValTreeResult<'tcx>
Evaluate a constant to a type-level constant.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn reserve_alloc_id(self) -> AllocId
pub fn reserve_alloc_id(self) -> AllocId
Obtains a new allocation ID that can be referenced but does not yet have an allocation backing it.
Make sure to call set_alloc_id_memory
or set_alloc_id_same_memory
before returning such
an AllocId
from a query.
sourcefn reserve_and_set_dedup(self, alloc: GlobalAlloc<'tcx>) -> AllocId
fn reserve_and_set_dedup(self, alloc: GlobalAlloc<'tcx>) -> AllocId
Reserves a new ID if this allocation has not been dedup-reserved before. Should not be used for mutable memory.
sourcepub fn reserve_and_set_memory_dedup(self, mem: ConstAllocation<'tcx>) -> AllocId
pub fn reserve_and_set_memory_dedup(self, mem: ConstAllocation<'tcx>) -> AllocId
Generates an AllocId
for a memory allocation. If the exact same memory has been
allocated before, this will return the same AllocId
.
sourcepub fn reserve_and_set_static_alloc(self, static_id: DefId) -> AllocId
pub fn reserve_and_set_static_alloc(self, static_id: DefId) -> AllocId
Generates an AllocId
for a static or return a cached one in case this function has been
called on the same static before.
sourcefn reserve_and_set_fn_alloc_internal(
self,
instance: Instance<'tcx>,
unique: bool,
) -> AllocId
fn reserve_and_set_fn_alloc_internal( self, instance: Instance<'tcx>, unique: bool, ) -> AllocId
Generates an AllocId
for a function. The caller must already have decided whether this
function obtains a unique AllocId or gets de-duplicated via the cache.
sourcepub fn reserve_and_set_fn_alloc(self, instance: Instance<'tcx>) -> AllocId
pub fn reserve_and_set_fn_alloc(self, instance: Instance<'tcx>) -> AllocId
Generates an AllocId
for a function. Depending on the function type,
this might get deduplicated or assigned a new ID each time.
sourcepub fn reserve_and_set_vtable_alloc(
self,
ty: Ty<'tcx>,
poly_trait_ref: Option<PolyExistentialTraitRef<'tcx>>,
) -> AllocId
pub fn reserve_and_set_vtable_alloc( self, ty: Ty<'tcx>, poly_trait_ref: Option<PolyExistentialTraitRef<'tcx>>, ) -> AllocId
Generates an AllocId
for a (symbolic, not-reified) vtable. Will get deduplicated.
sourcepub fn reserve_and_set_memory_alloc(self, mem: ConstAllocation<'tcx>) -> AllocId
pub fn reserve_and_set_memory_alloc(self, mem: ConstAllocation<'tcx>) -> AllocId
Interns the Allocation
and return a new AllocId
, even if there’s already an identical
Allocation
with a different AllocId
.
Statics with identical content will still point to the same Allocation
, i.e.,
their data will be deduplicated through Allocation
interning – but they
are different places in memory and as such need different IDs.
sourcepub fn try_get_global_alloc(self, id: AllocId) -> Option<GlobalAlloc<'tcx>>
pub fn try_get_global_alloc(self, id: AllocId) -> Option<GlobalAlloc<'tcx>>
Returns None
in case the AllocId
is dangling. An InterpretCx
can still have a
local Allocation
for that AllocId
, but having such an AllocId
in a constant is
illegal and will likely ICE.
This function exists to allow const eval to detect the difference between evaluation-
local dangling pointers and allocations in constants/statics.
sourcepub fn global_alloc(self, id: AllocId) -> GlobalAlloc<'tcx>
pub fn global_alloc(self, id: AllocId) -> GlobalAlloc<'tcx>
Panics in case the AllocId
is dangling. Since that is impossible for AllocId
s in
constants (as all constants must pass interning and validation that check for dangling
ids), this function is frequently used throughout rustc, but should not be used within
the interpreter.
sourcepub fn set_alloc_id_memory(self, id: AllocId, mem: ConstAllocation<'tcx>)
pub fn set_alloc_id_memory(self, id: AllocId, mem: ConstAllocation<'tcx>)
Freezes an AllocId
created with reserve
by pointing it at an Allocation
. Trying to
call this function twice, even with the same Allocation
will ICE the compiler.
sourcepub fn set_nested_alloc_id_static(self, id: AllocId, def_id: LocalDefId)
pub fn set_nested_alloc_id_static(self, id: AllocId, def_id: LocalDefId)
Freezes an AllocId
created with reserve
by pointing it at a static item. Trying to
call this function twice, even with the same DefId
will ICE the compiler.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn expand_abstract_consts<T: TypeFoldable<TyCtxt<'tcx>>>(self, ac: T) -> T
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn fold_regions<T>(
self,
value: T,
f: impl FnMut(Region<'tcx>, DebruijnIndex) -> Region<'tcx>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn fold_regions<T>(
self,
value: T,
f: impl FnMut(Region<'tcx>, DebruijnIndex) -> Region<'tcx>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
Folds the escaping and free regions in value
using f
.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn instantiate_bound_regions<T, F>(
self,
value: Binder<'tcx, T>,
fld_r: F,
) -> (T, FxIndexMap<BoundRegion, Region<'tcx>>)
pub fn instantiate_bound_regions<T, F>( self, value: Binder<'tcx, T>, fld_r: F, ) -> (T, FxIndexMap<BoundRegion, Region<'tcx>>)
Replaces all regions bound by the given Binder
with the
results returned by the closure; the closure is expected to
return a free region (relative to this binder), and hence the
binder is removed in the return type. The closure is invoked
once for each unique BoundRegionKind
; multiple references to the
same BoundRegionKind
will reuse the previous result. A map is
returned at the end with each bound region and the free region
that replaced it.
§Panics
This method only replaces late bound regions. Any types or
constants bound by value
will cause an ICE.
pub fn instantiate_bound_regions_uncached<T, F>( self, value: Binder<'tcx, T>, replace_regions: F, ) -> T
sourcepub fn replace_escaping_bound_vars_uncached<T: TypeFoldable<TyCtxt<'tcx>>>(
self,
value: T,
delegate: impl BoundVarReplacerDelegate<'tcx>,
) -> T
pub fn replace_escaping_bound_vars_uncached<T: TypeFoldable<TyCtxt<'tcx>>>( self, value: T, delegate: impl BoundVarReplacerDelegate<'tcx>, ) -> T
Replaces all escaping bound vars. The fld_r
closure replaces escaping
bound regions; the fld_t
closure replaces escaping bound types and the fld_c
closure replaces escaping bound consts.
sourcepub fn replace_bound_vars_uncached<T: TypeFoldable<TyCtxt<'tcx>>>(
self,
value: Binder<'tcx, T>,
delegate: impl BoundVarReplacerDelegate<'tcx>,
) -> T
pub fn replace_bound_vars_uncached<T: TypeFoldable<TyCtxt<'tcx>>>( self, value: Binder<'tcx, T>, delegate: impl BoundVarReplacerDelegate<'tcx>, ) -> T
Replaces all types or regions bound by the given Binder
. The fld_r
closure replaces bound regions, the fld_t
closure replaces bound
types, and fld_c
replaces bound constants.
sourcepub fn liberate_late_bound_regions<T>(
self,
all_outlive_scope: DefId,
value: Binder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn liberate_late_bound_regions<T>(
self,
all_outlive_scope: DefId,
value: Binder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
Replaces any late-bound regions bound in value
with
free variants attached to all_outlive_scope
.
pub fn shift_bound_var_indices<T>(self, bound_vars: usize, value: T) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
sourcepub fn instantiate_bound_regions_with_erased<T>(
self,
value: Binder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn instantiate_bound_regions_with_erased<T>(
self,
value: Binder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
Replaces any late-bound regions bound in value
with 'erased
. Useful in codegen but also
method lookup and a few other places where precise region relationships are not required.
sourcepub fn anonymize_bound_vars<T>(self, value: Binder<'tcx, T>) -> Binder<'tcx, T>where
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn anonymize_bound_vars<T>(self, value: Binder<'tcx, T>) -> Binder<'tcx, T>where
T: TypeFoldable<TyCtxt<'tcx>>,
Anonymize all bound variables in value
, this is mostly used to improve caching.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn offset_of_subfield<I>( self, param_env: ParamEnv<'tcx>, layout: TyAndLayout<'tcx>, indices: I, ) -> Size
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn normalize_erasing_regions<T>(
self,
param_env: ParamEnv<'tcx>,
value: T,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn normalize_erasing_regions<T>(
self,
param_env: ParamEnv<'tcx>,
value: T,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
Erase the regions in value
and then fully normalize all the
types found within. The result will also have regions erased.
This should only be used outside of type inference. For example, it assumes that normalization will succeed.
sourcepub fn try_normalize_erasing_regions<T>(
self,
param_env: ParamEnv<'tcx>,
value: T,
) -> Result<T, NormalizationError<'tcx>>where
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn try_normalize_erasing_regions<T>(
self,
param_env: ParamEnv<'tcx>,
value: T,
) -> Result<T, NormalizationError<'tcx>>where
T: TypeFoldable<TyCtxt<'tcx>>,
Tries to erase the regions in value
and then fully normalize all the
types found within. The result will also have regions erased.
Contrary to normalize_erasing_regions
this function does not assume that normalization
succeeds.
sourcepub fn normalize_erasing_late_bound_regions<T>(
self,
param_env: ParamEnv<'tcx>,
value: Binder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn normalize_erasing_late_bound_regions<T>(
self,
param_env: ParamEnv<'tcx>,
value: Binder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
If you have a Binder<'tcx, T>
, you can do this to strip out the
late-bound regions and then normalize the result, yielding up
a T
(with regions erased). This is appropriate when the
binder is being instantiated at the call site.
N.B., currently, higher-ranked type bounds inhibit normalization. Therefore, each time we erase them in codegen, we need to normalize the contents.
sourcepub fn instantiate_and_normalize_erasing_regions<T>(
self,
param_args: GenericArgsRef<'tcx>,
param_env: ParamEnv<'tcx>,
value: EarlyBinder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn instantiate_and_normalize_erasing_regions<T>(
self,
param_args: GenericArgsRef<'tcx>,
param_env: ParamEnv<'tcx>,
value: EarlyBinder<'tcx, T>,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
Monomorphizes a type from the AST by first applying the
in-scope instantiations and then normalizing any associated
types.
Panics if normalization fails. In case normalization might fail
use try_instantiate_and_normalize_erasing_regions
instead.
sourcepub fn try_instantiate_and_normalize_erasing_regions<T>(
self,
param_args: GenericArgsRef<'tcx>,
param_env: ParamEnv<'tcx>,
value: EarlyBinder<'tcx, T>,
) -> Result<T, NormalizationError<'tcx>>where
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn try_instantiate_and_normalize_erasing_regions<T>(
self,
param_args: GenericArgsRef<'tcx>,
param_env: ParamEnv<'tcx>,
value: EarlyBinder<'tcx, T>,
) -> Result<T, NormalizationError<'tcx>>where
T: TypeFoldable<TyCtxt<'tcx>>,
Monomorphizes a type from the AST by first applying the
in-scope instantiations and then trying to normalize any associated
types. Contrary to instantiate_and_normalize_erasing_regions
this does
not assume that normalization succeeds.
source§impl<'t> TyCtxt<'t>
impl<'t> TyCtxt<'t>
sourcepub fn def_path_str(self, def_id: impl IntoQueryParam<DefId>) -> String
pub fn def_path_str(self, def_id: impl IntoQueryParam<DefId>) -> String
Returns a string identifying this DefId
. This string is
suitable for user output.
pub fn def_path_str_with_args( self, def_id: impl IntoQueryParam<DefId>, args: &'t [GenericArg<'t>], ) -> String
pub fn value_path_str_with_args( self, def_id: impl IntoQueryParam<DefId>, args: &'t [GenericArg<'t>], ) -> String
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn for_each_impl<F: FnMut(DefId)>(self, trait_def_id: DefId, f: F)
pub fn for_each_impl<F: FnMut(DefId)>(self, trait_def_id: DefId, f: F)
trait_def_id
MUST BE the DefId
of a trait.
sourcepub fn for_each_relevant_impl(
self,
trait_def_id: DefId,
self_ty: Ty<'tcx>,
f: impl FnMut(DefId),
)
pub fn for_each_relevant_impl( self, trait_def_id: DefId, self_ty: Ty<'tcx>, f: impl FnMut(DefId), )
Iterate over every impl that could possibly match the self type self_ty
.
trait_def_id
MUST BE the DefId
of a trait.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn type_id_hash(self, ty: Ty<'tcx>) -> Hash128
pub fn type_id_hash(self, ty: Ty<'tcx>) -> Hash128
Creates a hash of the type Ty
which will be the same no matter what crate
context it’s calculated within. This is used by the type_id
intrinsic.
pub fn res_generics_def_id(self, res: Res) -> Option<DefId>
sourcepub fn struct_tail_without_normalization(self, ty: Ty<'tcx>) -> Ty<'tcx>
pub fn struct_tail_without_normalization(self, ty: Ty<'tcx>) -> Ty<'tcx>
Attempts to returns the deeply last field of nested structures, but
does not apply any normalization in its search. Returns the same type
if input ty
is not a structure at all.
sourcepub fn struct_tail_for_codegen(
self,
ty: Ty<'tcx>,
param_env: ParamEnv<'tcx>,
) -> Ty<'tcx>
pub fn struct_tail_for_codegen( self, ty: Ty<'tcx>, param_env: ParamEnv<'tcx>, ) -> Ty<'tcx>
Returns the deeply last field of nested structures, or the same type if not a structure at all. Corresponds to the only possible unsized field, and its type can be used to determine unsizing strategy.
Should only be called if ty
has no inference variables and does not
need its lifetimes preserved (e.g. as part of codegen); otherwise
normalization attempt may cause compiler bugs.
sourcepub fn struct_tail_with_normalize(
self,
ty: Ty<'tcx>,
normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>,
f: impl FnMut(),
) -> Ty<'tcx>
pub fn struct_tail_with_normalize( self, ty: Ty<'tcx>, normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>, f: impl FnMut(), ) -> Ty<'tcx>
Returns the deeply last field of nested structures, or the same type if not a structure at all. Corresponds to the only possible unsized field, and its type can be used to determine unsizing strategy.
This is parameterized over the normalization strategy (i.e. how to
handle <T as Trait>::Assoc
and impl Trait
); pass the identity
function to indicate no normalization should take place.
See also struct_tail_for_codegen
, which is suitable for use
during codegen.
sourcepub fn struct_lockstep_tails_for_codegen(
self,
source: Ty<'tcx>,
target: Ty<'tcx>,
param_env: ParamEnv<'tcx>,
) -> (Ty<'tcx>, Ty<'tcx>)
pub fn struct_lockstep_tails_for_codegen( self, source: Ty<'tcx>, target: Ty<'tcx>, param_env: ParamEnv<'tcx>, ) -> (Ty<'tcx>, Ty<'tcx>)
Same as applying struct_tail
on source
and target
, but only
keeps going as long as the two types are instances of the same
structure definitions.
For (Foo<Foo<T>>, Foo<dyn Trait>)
, the result will be (Foo<T>, dyn Trait)
,
whereas struct_tail produces T
, and Trait
, respectively.
Should only be called if the types have no inference variables and do not need their lifetimes preserved (e.g., as part of codegen); otherwise, normalization attempt may cause compiler bugs.
sourcepub fn struct_lockstep_tails_with_normalize(
self,
source: Ty<'tcx>,
target: Ty<'tcx>,
normalize: impl Fn(Ty<'tcx>) -> Ty<'tcx>,
) -> (Ty<'tcx>, Ty<'tcx>)
pub fn struct_lockstep_tails_with_normalize( self, source: Ty<'tcx>, target: Ty<'tcx>, normalize: impl Fn(Ty<'tcx>) -> Ty<'tcx>, ) -> (Ty<'tcx>, Ty<'tcx>)
Same as applying struct_tail
on source
and target
, but only
keeps going as long as the two types are instances of the same
structure definitions.
For (Foo<Foo<T>>, Foo<dyn Trait>)
, the result will be (Foo<T>, Trait)
,
whereas struct_tail produces T
, and Trait
, respectively.
See also struct_lockstep_tails_for_codegen
, which is suitable for use
during codegen.
sourcepub fn calculate_dtor(
self,
adt_did: DefId,
validate: impl Fn(Self, DefId) -> Result<(), ErrorGuaranteed>,
) -> Option<Destructor>
pub fn calculate_dtor( self, adt_did: DefId, validate: impl Fn(Self, DefId) -> Result<(), ErrorGuaranteed>, ) -> Option<Destructor>
Calculate the destructor of a given type.
sourcepub fn calculate_async_dtor(
self,
adt_did: DefId,
validate: impl Fn(Self, DefId) -> Result<(), ErrorGuaranteed>,
) -> Option<AsyncDestructor>
pub fn calculate_async_dtor( self, adt_did: DefId, validate: impl Fn(Self, DefId) -> Result<(), ErrorGuaranteed>, ) -> Option<AsyncDestructor>
Calculate the async destructor of a given type.
sourcepub fn async_drop_glue_morphology(self, did: DefId) -> AsyncDropGlueMorphology
pub fn async_drop_glue_morphology(self, did: DefId) -> AsyncDropGlueMorphology
Returns async drop glue morphology for a definition. To get async drop
glue morphology for a type see Ty::async_drop_glue_morphology
.
sourcepub fn destructor_constraints(self, def: AdtDef<'tcx>) -> Vec<GenericArg<'tcx>>
pub fn destructor_constraints(self, def: AdtDef<'tcx>) -> Vec<GenericArg<'tcx>>
Returns the set of types that are required to be alive in
order to run the destructor of def
(see RFCs 769 and
1238).
Note that this returns only the constraints for the
destructor of def
itself. For the destructors of the
contents, you need adt_dtorck_constraint
.
sourcepub fn uses_unique_generic_params(
self,
args: &[GenericArg<'tcx>],
ignore_regions: CheckRegions,
) -> Result<(), NotUniqueParam<'tcx>>
pub fn uses_unique_generic_params( self, args: &[GenericArg<'tcx>], ignore_regions: CheckRegions, ) -> Result<(), NotUniqueParam<'tcx>>
Checks whether each generic argument is simply a unique generic parameter.
sourcepub fn is_closure_like(self, def_id: DefId) -> bool
pub fn is_closure_like(self, def_id: DefId) -> bool
Returns true
if def_id
refers to a closure, coroutine, or coroutine-closure
(i.e. an async closure). These are all represented by hir::Closure
, and all
have the same DefKind
.
Note that closures have a DefId
, but the closure expression also has a
sourcepub fn is_typeck_child(self, def_id: DefId) -> bool
pub fn is_typeck_child(self, def_id: DefId) -> bool
Returns true
if def_id
refers to a definition that does not have its own
type-checking context, i.e. closure, coroutine or inline const.
sourcepub fn is_trait(self, def_id: DefId) -> bool
pub fn is_trait(self, def_id: DefId) -> bool
Returns true
if def_id
refers to a trait (i.e., trait Foo { ... }
).
sourcepub fn is_trait_alias(self, def_id: DefId) -> bool
pub fn is_trait_alias(self, def_id: DefId) -> bool
Returns true
if def_id
refers to a trait alias (i.e., trait Foo = ...;
),
and false
otherwise.
sourcepub fn is_constructor(self, def_id: DefId) -> bool
pub fn is_constructor(self, def_id: DefId) -> bool
Returns true
if this DefId
refers to the implicit constructor for
a tuple struct like struct Foo(u32)
, and false
otherwise.
sourcepub fn typeck_root_def_id(self, def_id: DefId) -> DefId
pub fn typeck_root_def_id(self, def_id: DefId) -> DefId
Given the DefId
, returns the DefId
of the innermost item that
has its own type-checking context or “inference environment”.
For example, a closure has its own DefId
, but it is type-checked
with the containing item. Similarly, an inline const block has its
own DefId
but it is type-checked together with the containing item.
Therefore, when we fetch the
typeck
the closure, for example, we really wind up
fetching the typeck
the enclosing fn item.
sourcepub fn closure_env_ty(
self,
closure_ty: Ty<'tcx>,
closure_kind: ClosureKind,
env_region: Region<'tcx>,
) -> Ty<'tcx>
pub fn closure_env_ty( self, closure_ty: Ty<'tcx>, closure_kind: ClosureKind, env_region: Region<'tcx>, ) -> Ty<'tcx>
Given the DefId
and args a closure, creates the type of
self
argument that the closure expects. For example, for a
Fn
closure, this would return a reference type &T
where
T = closure_ty
.
Returns None
if this closure’s kind has not yet been inferred.
This should only be possible during type checking.
Note that the return value is a late-bound region and hence wrapped in a binder.
sourcepub fn is_static(self, def_id: DefId) -> bool
pub fn is_static(self, def_id: DefId) -> bool
Returns true
if the node pointed to by def_id
is a static
item.
pub fn static_mutability(self, def_id: DefId) -> Option<Mutability>
sourcepub fn is_thread_local_static(self, def_id: DefId) -> bool
pub fn is_thread_local_static(self, def_id: DefId) -> bool
Returns true
if this is a static
item with the #[thread_local]
attribute.
sourcepub fn is_mutable_static(self, def_id: DefId) -> bool
pub fn is_mutable_static(self, def_id: DefId) -> bool
Returns true
if the node pointed to by def_id
is a mutable static
item.
sourcepub fn needs_thread_local_shim(self, def_id: DefId) -> bool
pub fn needs_thread_local_shim(self, def_id: DefId) -> bool
Returns true
if the item pointed to by def_id
is a thread local which needs a
thread local shim generated.
sourcepub fn thread_local_ptr_ty(self, def_id: DefId) -> Ty<'tcx>
pub fn thread_local_ptr_ty(self, def_id: DefId) -> Ty<'tcx>
Returns the type a reference to the thread local takes in MIR.
sourcepub fn static_ptr_ty(self, def_id: DefId) -> Ty<'tcx>
pub fn static_ptr_ty(self, def_id: DefId) -> Ty<'tcx>
Get the type of the pointer to the static that we use in MIR.
Return the set of types that should be taken into account when checking trait bounds on a coroutine’s internal state.
Return the set of types that should be taken into account when checking
trait bounds on a coroutine’s internal state. This properly replaces
ReErased
with new existential bound lifetimes.
sourcepub fn try_expand_impl_trait_type(
self,
def_id: DefId,
args: GenericArgsRef<'tcx>,
inspect_coroutine_fields: InspectCoroutineFields,
) -> Result<Ty<'tcx>, Ty<'tcx>>
pub fn try_expand_impl_trait_type( self, def_id: DefId, args: GenericArgsRef<'tcx>, inspect_coroutine_fields: InspectCoroutineFields, ) -> Result<Ty<'tcx>, Ty<'tcx>>
Expands the given impl trait type, stopping if the type is recursive.
sourcepub fn def_descr(self, def_id: DefId) -> &'static str
pub fn def_descr(self, def_id: DefId) -> &'static str
Query and get an English description for the item’s kind.
sourcepub fn def_kind_descr(self, def_kind: DefKind, def_id: DefId) -> &'static str
pub fn def_kind_descr(self, def_kind: DefKind, def_id: DefId) -> &'static str
Get an English description for the item’s kind.
sourcepub fn def_descr_article(self, def_id: DefId) -> &'static str
pub fn def_descr_article(self, def_id: DefId) -> &'static str
Gets an English article for the TyCtxt::def_descr
.
sourcepub fn def_kind_descr_article(
self,
def_kind: DefKind,
def_id: DefId,
) -> &'static str
pub fn def_kind_descr_article( self, def_kind: DefKind, def_id: DefId, ) -> &'static str
Gets an English article for the TyCtxt::def_kind_descr
.
sourcepub fn is_user_visible_dep(self, key: CrateNum) -> bool
pub fn is_user_visible_dep(self, key: CrateNum) -> bool
sourcepub fn has_host_param(self, def_id: impl IntoQueryParam<DefId>) -> bool
pub fn has_host_param(self, def_id: impl IntoQueryParam<DefId>) -> bool
Whether the item has a host effect param. This is different from TyCtxt::is_const
,
because the item must also be “maybe const”, and the crate where the item is
defined must also have the effects feature enabled.
pub fn expected_host_effect_param_for_body( self, def_id: impl Into<DefId>, ) -> Const<'tcx>
sourcepub fn with_opt_host_effect_param(
self,
caller_def_id: LocalDefId,
callee_def_id: DefId,
args: impl IntoIterator<Item: Into<GenericArg<'tcx>>>,
) -> GenericArgsRef<'tcx>
pub fn with_opt_host_effect_param( self, caller_def_id: LocalDefId, callee_def_id: DefId, args: impl IntoIterator<Item: Into<GenericArg<'tcx>>>, ) -> GenericArgsRef<'tcx>
Constructs generic args for an item, optionally appending a const effect param type
sourcepub fn expand_weak_alias_tys<T: TypeFoldable<TyCtxt<'tcx>>>(self, value: T) -> T
pub fn expand_weak_alias_tys<T: TypeFoldable<TyCtxt<'tcx>>>(self, value: T) -> T
Expand any weak alias types contained within the given value
.
This should be used over other normalization routines in situations where it’s important not to normalize other alias types and where the predicates on the corresponding type alias shouldn’t be taken into consideration.
Whenever possible prefer not to use this function! Instead, use standard normalization routines or if feasible don’t normalize at all.
This function comes in handy if you want to mimic the behavior of eager type alias expansion in a localized manner.
sourcepub fn peel_off_weak_alias_tys(self, ty: Ty<'tcx>) -> Ty<'tcx>
pub fn peel_off_weak_alias_tys(self, ty: Ty<'tcx>) -> Ty<'tcx>
Peel off all [weak alias types] in this type until there are none left.
This only expands weak alias types in “head” / outermost positions. It can be used over expand_weak_alias_tys as an optimization in situations where one only really cares about the kind of the final aliased type but not the types the other constituent types alias.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn for_each_free_region(
self,
value: &impl TypeVisitable<TyCtxt<'tcx>>,
callback: impl FnMut(Region<'tcx>),
)
pub fn for_each_free_region( self, value: &impl TypeVisitable<TyCtxt<'tcx>>, callback: impl FnMut(Region<'tcx>), )
Invoke callback
on every region appearing free in value
.
sourcepub fn all_free_regions_meet(
self,
value: &impl TypeVisitable<TyCtxt<'tcx>>,
callback: impl FnMut(Region<'tcx>) -> bool,
) -> bool
pub fn all_free_regions_meet( self, value: &impl TypeVisitable<TyCtxt<'tcx>>, callback: impl FnMut(Region<'tcx>) -> bool, ) -> bool
Returns true
if callback
returns true for every region appearing free in value
.
sourcepub fn any_free_region_meets(
self,
value: &impl TypeVisitable<TyCtxt<'tcx>>,
callback: impl FnMut(Region<'tcx>) -> bool,
) -> bool
pub fn any_free_region_meets( self, value: &impl TypeVisitable<TyCtxt<'tcx>>, callback: impl FnMut(Region<'tcx>) -> bool, ) -> bool
Returns true
if callback
returns true for some region appearing free in value
.
sourcepub fn collect_constrained_late_bound_regions<T>(
self,
value: Binder<'tcx, T>,
) -> FxHashSet<BoundRegionKind>where
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn collect_constrained_late_bound_regions<T>(
self,
value: Binder<'tcx, T>,
) -> FxHashSet<BoundRegionKind>where
T: TypeFoldable<TyCtxt<'tcx>>,
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.
sourcepub fn collect_referenced_late_bound_regions<T>(
self,
value: Binder<'tcx, T>,
) -> FxHashSet<BoundRegionKind>where
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn collect_referenced_late_bound_regions<T>(
self,
value: Binder<'tcx, T>,
) -> FxHashSet<BoundRegionKind>where
T: TypeFoldable<TyCtxt<'tcx>>,
Returns a set of all late-bound regions that appear in value
anywhere.
fn collect_late_bound_regions<T>(
self,
value: Binder<'tcx, T>,
just_constrained: bool,
) -> FxHashSet<BoundRegionKind>where
T: TypeFoldable<TyCtxt<'tcx>>,
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn closure_kind_origin( self, def_id: LocalDefId, ) -> Option<&'tcx (Span, HirPlace<'tcx>)>
pub fn closure_user_provided_sig( self, def_id: LocalDefId, ) -> CanonicalPolyFnSig<'tcx>
pub fn closure_captures( self, def_id: LocalDefId, ) -> &'tcx [&'tcx CapturedPlace<'tcx>]
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
Some workarounds to use cases that cannot use create_def
.
Do not add new ways to create TyCtxtFeed
without consulting
with T-compiler and making an analysis about why your addition
does not cause incremental compilation issues.
sourcepub fn feed_unit_query(self) -> TyCtxtFeed<'tcx, ()>
pub fn feed_unit_query(self) -> TyCtxtFeed<'tcx, ()>
Can only be fed before queries are run, and is thus exempt from any incremental issues. Do not use except for the initial query feeding.
sourcepub fn create_local_crate_def_id(
self,
span: Span,
) -> TyCtxtFeed<'tcx, LocalDefId>
pub fn create_local_crate_def_id( self, span: Span, ) -> TyCtxtFeed<'tcx, LocalDefId>
Only used in the resolver to register the CRATE_DEF_ID
DefId
and feed
some queries for it. It will panic if used twice.
sourcepub fn feed_anon_const_type(
self,
key: LocalDefId,
value: EarlyBinder<'tcx, Ty<'tcx>>,
)
pub fn feed_anon_const_type( self, key: LocalDefId, value: EarlyBinder<'tcx, Ty<'tcx>>, )
In order to break cycles involving AnonConst
, we need to set the expected type by side
effect. However, we do not want this as a general capability, so this interface restricts
to the only allowed case.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn has_typeck_results(self, def_id: LocalDefId) -> bool
sourcepub fn body_codegen_attrs(self, def_id: DefId) -> &'tcx CodegenFnAttrs
pub fn body_codegen_attrs(self, def_id: DefId) -> &'tcx CodegenFnAttrs
Expects a body and returns its codegen attributes.
Unlike codegen_fn_attrs
, this returns CodegenFnAttrs::EMPTY
for
constants.
pub fn alloc_steal_thir(self, thir: Thir<'tcx>) -> &'tcx Steal<Thir<'tcx>>
pub fn alloc_steal_mir(self, mir: Body<'tcx>) -> &'tcx Steal<Body<'tcx>>
pub fn alloc_steal_promoted( self, promoted: IndexVec<Promoted, Body<'tcx>>, ) -> &'tcx Steal<IndexVec<Promoted, Body<'tcx>>>
pub fn mk_adt_def( self, did: DefId, kind: AdtKind, variants: IndexVec<VariantIdx, VariantDef>, repr: ReprOptions, is_anonymous: bool, ) -> AdtDef<'tcx>
sourcepub fn allocate_bytes_dedup(self, bytes: &[u8]) -> AllocId
pub fn allocate_bytes_dedup(self, bytes: &[u8]) -> AllocId
Allocates a read-only byte or string literal for mir::interpret
.
Returns the same AllocId
if called again with the same bytes.
sourcepub fn layout_scalar_valid_range(
self,
def_id: DefId,
) -> (Bound<u128>, Bound<u128>)
pub fn layout_scalar_valid_range( self, def_id: DefId, ) -> (Bound<u128>, Bound<u128>)
Returns a range of the start/end indices specified with the
rustc_layout_scalar_valid_range
attribute.
pub fn lift<T: Lift<TyCtxt<'tcx>>>(self, value: T) -> Option<T::Lifted>
sourcepub fn create_global_ctxt(
s: &'tcx Session,
crate_types: Vec<CrateType>,
stable_crate_id: StableCrateId,
arena: &'tcx WorkerLocal<Arena<'tcx>>,
hir_arena: &'tcx WorkerLocal<Arena<'tcx>>,
untracked: Untracked,
dep_graph: DepGraph,
query_kinds: &'tcx [DepKindStruct<'tcx>],
query_system: QuerySystem<'tcx>,
hooks: Providers,
current_gcx: CurrentGcx,
) -> GlobalCtxt<'tcx>
pub fn create_global_ctxt( s: &'tcx Session, crate_types: Vec<CrateType>, stable_crate_id: StableCrateId, arena: &'tcx WorkerLocal<Arena<'tcx>>, hir_arena: &'tcx WorkerLocal<Arena<'tcx>>, untracked: Untracked, dep_graph: DepGraph, query_kinds: &'tcx [DepKindStruct<'tcx>], query_system: QuerySystem<'tcx>, hooks: Providers, current_gcx: CurrentGcx, ) -> GlobalCtxt<'tcx>
Creates a type context. To use the context call fn enter
which
provides a TyCtxt
.
By only providing the TyCtxt
inside of the closure we enforce that the type
context and any interned alue (types, args, etc.) can only be used while ty::tls
has a valid reference to the context, to allow formatting values that need it.
pub fn consider_optimizing<T: Fn() -> String>(self, msg: T) -> bool
sourcepub fn lang_items(self) -> &'tcx LanguageItems
pub fn lang_items(self) -> &'tcx LanguageItems
Obtain all lang items of this crate and all dependencies (recursively)
sourcepub fn ty_ordering_enum(self, span: Option<Span>) -> Ty<'tcx>
pub fn ty_ordering_enum(self, span: Option<Span>) -> Ty<'tcx>
Gets a Ty
representing the LangItem::OrderingEnum
sourcepub fn get_diagnostic_item(self, name: Symbol) -> Option<DefId>
pub fn get_diagnostic_item(self, name: Symbol) -> Option<DefId>
Obtain the given diagnostic item’s DefId
. Use is_diagnostic_item
if you just want to
compare against another DefId
, since is_diagnostic_item
is cheaper.
sourcepub fn get_diagnostic_name(self, id: DefId) -> Option<Symbol>
pub fn get_diagnostic_name(self, id: DefId) -> Option<Symbol>
Obtain the diagnostic item’s name
sourcepub fn is_diagnostic_item(self, name: Symbol, did: DefId) -> bool
pub fn is_diagnostic_item(self, name: Symbol, did: DefId) -> bool
Check whether the diagnostic item with the given name
has the given DefId
.
pub fn is_coroutine(self, def_id: DefId) -> bool
sourcepub fn coroutine_movability(self, def_id: DefId) -> Movability
pub fn coroutine_movability(self, def_id: DefId) -> Movability
Returns the movability of the coroutine of def_id
, or panics
if given a def_id
that is not a coroutine.
sourcepub fn coroutine_is_async(self, def_id: DefId) -> bool
pub fn coroutine_is_async(self, def_id: DefId) -> bool
Returns true
if the node pointed to by def_id
is a coroutine for an async construct.
sourcepub fn is_general_coroutine(self, def_id: DefId) -> bool
pub fn is_general_coroutine(self, def_id: DefId) -> bool
Returns true
if the node pointed to by def_id
is a general coroutine that implements Coroutine
.
This means it is neither an async
or gen
construct.
sourcepub fn coroutine_is_gen(self, def_id: DefId) -> bool
pub fn coroutine_is_gen(self, def_id: DefId) -> bool
Returns true
if the node pointed to by def_id
is a coroutine for a gen
construct.
sourcepub fn coroutine_is_async_gen(self, def_id: DefId) -> bool
pub fn coroutine_is_async_gen(self, def_id: DefId) -> bool
Returns true
if the node pointed to by def_id
is a coroutine for a async gen
construct.
pub fn stability(self) -> &'tcx Index
pub fn features(self) -> &'tcx Features
pub fn def_key(self, id: impl IntoQueryParam<DefId>) -> DefKey
sourcepub fn def_path(self, id: DefId) -> DefPath
pub fn def_path(self, id: DefId) -> DefPath
Converts a DefId
into its fully expanded DefPath
(every
DefId
is really just an interned DefPath
).
Note that if id
is not local to this crate, the result will
be a non-local DefPath
.
pub fn def_path_hash(self, def_id: DefId) -> DefPathHash
pub fn crate_types(self) -> &'tcx [CrateType]
pub fn metadata_kind(self) -> MetadataKind
pub fn needs_metadata(self) -> bool
pub fn needs_crate_hash(self) -> bool
pub fn stable_crate_id(self, crate_num: CrateNum) -> StableCrateId
sourcepub fn stable_crate_id_to_crate_num(
self,
stable_crate_id: StableCrateId,
) -> CrateNum
pub fn stable_crate_id_to_crate_num( self, stable_crate_id: StableCrateId, ) -> CrateNum
Maps a StableCrateId to the corresponding CrateNum. This method assumes that the crate in question has already been loaded by the CrateStore.
sourcepub fn def_path_hash_to_def_id(self, hash: DefPathHash) -> Option<DefId>
pub fn def_path_hash_to_def_id(self, hash: DefPathHash) -> Option<DefId>
Converts a DefPathHash
to its corresponding DefId
in the current compilation
session, if it still exists. This is used during incremental compilation to
turn a deserialized DefPathHash
into its current DefId
.
pub fn def_path_debug_str(self, def_id: DefId) -> String
pub fn dcx(self) -> DiagCtxtHandle<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn create_def(
self,
parent: LocalDefId,
name: Symbol,
def_kind: DefKind,
) -> TyCtxtFeed<'tcx, LocalDefId>
pub fn create_def( self, parent: LocalDefId, name: Symbol, def_kind: DefKind, ) -> TyCtxtFeed<'tcx, LocalDefId>
tcx
-dependent operations performed for every created definition.
pub fn create_crate_num( self, stable_crate_id: StableCrateId, ) -> Result<TyCtxtFeed<'tcx, CrateNum>, CrateNum>
pub fn iter_local_def_id(self) -> impl Iterator<Item = LocalDefId> + 'tcx
pub fn def_path_table(self) -> &'tcx DefPathTable
pub fn def_path_hash_to_def_index_map(self) -> &'tcx DefPathHashMap
sourcepub fn cstore_untracked(self) -> FreezeReadGuard<'tcx, CrateStoreDyn>
pub fn cstore_untracked(self) -> FreezeReadGuard<'tcx, CrateStoreDyn>
Note that this is untracked and should only be used within the query system if the result is otherwise tracked through queries
sourcepub fn untracked(self) -> &'tcx Untracked
pub fn untracked(self) -> &'tcx Untracked
Give out access to the untracked data without any sanity checks.
sourcepub fn definitions_untracked(self) -> FreezeReadGuard<'tcx, Definitions>
pub fn definitions_untracked(self) -> FreezeReadGuard<'tcx, Definitions>
Note that this is untracked and should only be used within the query system if the result is otherwise tracked through queries
sourcepub fn source_span_untracked(self, def_id: LocalDefId) -> Span
pub fn source_span_untracked(self, def_id: LocalDefId) -> Span
Note that this is untracked and should only be used within the query system if the result is otherwise tracked through queries
pub fn with_stable_hashing_context<R>( self, f: impl FnOnce(StableHashingContext<'_>) -> R, ) -> R
pub fn serialize_query_result_cache( self, encoder: FileEncoder, ) -> FileEncodeResult
pub fn local_crate_exports_generics(self) -> bool
sourcepub fn is_suitable_region(
self,
generic_param_scope: LocalDefId,
region: Region<'tcx>,
) -> Option<FreeRegionInfo>
pub fn is_suitable_region( self, generic_param_scope: LocalDefId, region: Region<'tcx>, ) -> Option<FreeRegionInfo>
Returns the DefId
and the BoundRegionKind
corresponding to the given region.
sourcepub fn return_type_impl_or_dyn_traits(
self,
scope_def_id: LocalDefId,
) -> Vec<&'tcx Ty<'tcx>>
pub fn return_type_impl_or_dyn_traits( self, scope_def_id: LocalDefId, ) -> Vec<&'tcx Ty<'tcx>>
Given a DefId
for an fn
, return all the dyn
and impl
traits in its return type.
sourcepub fn return_type_impl_or_dyn_traits_with_type_alias(
self,
scope_def_id: LocalDefId,
) -> Option<(Vec<&'tcx Ty<'tcx>>, Span, Option<Span>)>
pub fn return_type_impl_or_dyn_traits_with_type_alias( self, scope_def_id: LocalDefId, ) -> Option<(Vec<&'tcx Ty<'tcx>>, Span, Option<Span>)>
Given a DefId
for an fn
, return all the dyn
and impl
traits in
its return type, and the associated alias span when type alias is used,
along with a span for lifetime suggestion (if there are existing generics).
sourcepub fn is_bound_region_in_impl_item(
self,
suitable_region_binding_scope: LocalDefId,
) -> bool
pub fn is_bound_region_in_impl_item( self, suitable_region_binding_scope: LocalDefId, ) -> bool
Checks if the bound region is in Impl Item.
sourcepub fn has_strict_asm_symbol_naming(self) -> bool
pub fn has_strict_asm_symbol_naming(self) -> bool
Determines whether identifiers in the assembly have strict naming rules. Currently, only NVPTX* targets need it.
sourcepub fn caller_location_ty(self) -> Ty<'tcx>
pub fn caller_location_ty(self) -> Ty<'tcx>
Returns &'static core::panic::Location<'static>
.
sourcepub fn article_and_description(
self,
def_id: DefId,
) -> (&'static str, &'static str)
pub fn article_and_description( self, def_id: DefId, ) -> (&'static str, &'static str)
Returns a displayable description and article for the given def_id
(e.g. ("a", "struct")
).
pub fn type_length_limit(self) -> Limit
pub fn recursion_limit(self) -> Limit
pub fn move_size_limit(self) -> Limit
pub fn all_traits(self) -> impl Iterator<Item = DefId> + 'tcx
pub fn local_visibility(self, def_id: LocalDefId) -> Visibility
sourcepub fn opaque_type_origin(self, def_id: LocalDefId) -> OpaqueTyOrigin
pub fn opaque_type_origin(self, def_id: LocalDefId) -> OpaqueTyOrigin
Returns the origin of the opaque type def_id
.
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub(crate) fn intern_region(self, v: RegionKind<'tcx>) -> Region<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn mk_const_alloc(self, v: Allocation) -> ConstAllocation<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn mk_adt_def_from_data(self, v: AdtDefData) -> AdtDef<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn mk_external_constraints( self, v: ExternalConstraintsData<TyCtxt<'tcx>>, ) -> ExternalConstraints<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn mk_predefined_opaques_in_body( self, v: PredefinedOpaquesData<TyCtxt<'tcx>>, ) -> PredefinedOpaques<'tcx>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn mk_const_list(self, v: &[Const<'tcx>]) -> &'tcx List<Const<'tcx>>
pub fn mk_args(self, v: &[GenericArg<'tcx>]) -> &'tcx List<GenericArg<'tcx>>
pub fn mk_type_list(self, v: &[Ty<'tcx>]) -> &'tcx List<Ty<'tcx>>
pub fn mk_canonical_var_infos( self, v: &[CanonicalVarInfo<'tcx>], ) -> &'tcx List<CanonicalVarInfo<'tcx>>
fn intern_poly_existential_predicates( self, v: &[PolyExistentialPredicate<'tcx>], ) -> &'tcx List<PolyExistentialPredicate<'tcx>>
pub fn mk_projs(self, v: &[ProjectionKind]) -> &'tcx List<ProjectionKind>
pub fn mk_place_elems( self, v: &[PlaceElem<'tcx>], ) -> &'tcx List<PlaceElem<'tcx>>
pub fn mk_bound_variable_kinds( self, v: &[BoundVariableKind], ) -> &'tcx List<BoundVariableKind>
pub fn mk_fields(self, v: &[FieldIdx]) -> &'tcx List<FieldIdx>
fn intern_local_def_ids(self, v: &[LocalDefId]) -> &'tcx List<LocalDefId>
fn intern_captures( self, v: &[&'tcx CapturedPlace<'tcx>], ) -> &'tcx List<&'tcx CapturedPlace<'tcx>>
pub fn mk_offset_of( self, v: &[(VariantIdx, FieldIdx)], ) -> &'tcx List<(VariantIdx, FieldIdx)>
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn safe_to_unsafe_fn_ty(self, sig: PolyFnSig<'tcx>) -> Ty<'tcx>
pub fn safe_to_unsafe_fn_ty(self, sig: PolyFnSig<'tcx>) -> Ty<'tcx>
Given a fn
type, returns an equivalent unsafe fn
type;
that is, a fn
type that is equivalent in every way for being
unsafe.
sourcepub fn trait_may_define_assoc_item(
self,
trait_def_id: DefId,
assoc_name: Ident,
) -> bool
pub fn trait_may_define_assoc_item( self, trait_def_id: DefId, assoc_name: Ident, ) -> bool
Given the def_id of a Trait trait_def_id
and the name of an associated item assoc_name
returns true if the trait_def_id
defines an associated item of name assoc_name
.
sourcepub fn ty_is_opaque_future(self, ty: Ty<'_>) -> bool
pub fn ty_is_opaque_future(self, ty: Ty<'_>) -> bool
Given a ty
, return whether it’s an impl Future<...>
.
sourcepub fn supertrait_def_ids(
self,
trait_def_id: DefId,
) -> impl Iterator<Item = DefId> + 'tcx
pub fn supertrait_def_ids( self, trait_def_id: DefId, ) -> impl Iterator<Item = DefId> + 'tcx
Computes the def-ids of the transitive supertraits of trait_def_id
. This (intentionally)
does not compute the full elaborated super-predicates but just the set of def-ids. It is used
to identify which traits may define a given associated type to help avoid cycle errors,
and to make size estimates for vtable layout computation.
sourcepub fn signature_unclosure(
self,
sig: PolyFnSig<'tcx>,
safety: Safety,
) -> PolyFnSig<'tcx>
pub fn signature_unclosure( self, sig: PolyFnSig<'tcx>, safety: Safety, ) -> PolyFnSig<'tcx>
Given a closure signature, returns an equivalent fn signature. Detuples
and so forth – so e.g., if we have a sig with Fn<(u32, i32)>
then
you would get a fn(u32, i32)
.
unsafety
determines the unsafety of the fn signature. If you pass
hir::Safety::Unsafe
in the previous example, then you would get
an unsafe fn (u32, i32)
.
It cannot convert a closure that requires unsafe.
pub fn mk_predicate( self, binder: Binder<'tcx, PredicateKind<'tcx>>, ) -> Predicate<'tcx>
pub fn reuse_or_mk_predicate( self, pred: Predicate<'tcx>, binder: Binder<'tcx, PredicateKind<'tcx>>, ) -> Predicate<'tcx>
pub fn check_args_compatible( self, def_id: DefId, args: &'tcx [GenericArg<'tcx>], ) -> bool
fn check_args_compatible_inner( self, def_id: DefId, args: &'tcx [GenericArg<'tcx>], nested: bool, ) -> bool
sourcepub fn debug_assert_args_compatible(
self,
def_id: DefId,
args: &'tcx [GenericArg<'tcx>],
)
pub fn debug_assert_args_compatible( self, def_id: DefId, args: &'tcx [GenericArg<'tcx>], )
With cfg(debug_assertions)
, assert that args are compatible with their generics,
and print out the args if not.
pub(crate) fn check_and_mk_args( self, def_id: DefId, args: impl IntoIterator<Item: Into<GenericArg<'tcx>>>, ) -> GenericArgsRef<'tcx>
pub fn mk_ct_from_kind(self, kind: ConstKind<'tcx>) -> Const<'tcx>
pub fn mk_ty_from_kind(self, st: TyKind<'tcx>) -> Ty<'tcx>
pub fn mk_param_from_def(self, param: &GenericParamDef) -> GenericArg<'tcx>
pub fn mk_place_field( self, place: Place<'tcx>, f: FieldIdx, ty: Ty<'tcx>, ) -> Place<'tcx>
pub fn mk_place_deref(self, place: Place<'tcx>) -> Place<'tcx>
pub fn mk_place_downcast( self, place: Place<'tcx>, adt_def: AdtDef<'tcx>, variant_index: VariantIdx, ) -> Place<'tcx>
pub fn mk_place_downcast_unnamed( self, place: Place<'tcx>, variant_index: VariantIdx, ) -> Place<'tcx>
pub fn mk_place_index(self, place: Place<'tcx>, index: Local) -> Place<'tcx>
sourcepub fn mk_place_elem(
self,
place: Place<'tcx>,
elem: PlaceElem<'tcx>,
) -> Place<'tcx>
pub fn mk_place_elem( self, place: Place<'tcx>, elem: PlaceElem<'tcx>, ) -> Place<'tcx>
This method copies Place
’s projection, add an element and reintern it. Should not be used
to build a full Place
it’s just a convenient way to grab a projection and modify it in
flight.
pub fn mk_poly_existential_predicates( self, eps: &[PolyExistentialPredicate<'tcx>], ) -> &'tcx List<PolyExistentialPredicate<'tcx>>
pub fn mk_clauses(self, clauses: &[Clause<'tcx>]) -> Clauses<'tcx>
pub fn mk_local_def_ids(self, clauses: &[LocalDefId]) -> &'tcx List<LocalDefId>
pub fn mk_local_def_ids_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_captures_from_iter<I, T>(self, iter: I) -> T::Outputwhere
I: Iterator<Item = T>,
T: CollectAndApply<&'tcx CapturedPlace<'tcx>, &'tcx List<&'tcx CapturedPlace<'tcx>>>,
pub fn mk_const_list_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_fn_sig<I, T>( self, inputs: I, output: I::Item, c_variadic: bool, safety: Safety, abi: Abi, ) -> T::Output
pub fn mk_poly_existential_predicates_from_iter<I, T>(
self,
iter: I,
) -> T::Outputwhere
I: Iterator<Item = T>,
T: CollectAndApply<PolyExistentialPredicate<'tcx>, &'tcx List<PolyExistentialPredicate<'tcx>>>,
pub fn mk_clauses_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_type_list_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_args_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_canonical_var_infos_from_iter<I, T>(self, iter: I) -> T::Outputwhere
I: Iterator<Item = T>,
T: CollectAndApply<CanonicalVarInfo<'tcx>, &'tcx List<CanonicalVarInfo<'tcx>>>,
pub fn mk_place_elems_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_fields_from_iter<I, T>(self, iter: I) -> T::Output
pub fn mk_offset_of_from_iter<I, T>(self, iter: I) -> T::Outputwhere
I: Iterator<Item = T>,
T: CollectAndApply<(VariantIdx, FieldIdx), &'tcx List<(VariantIdx, FieldIdx)>>,
pub fn mk_args_trait( self, self_ty: Ty<'tcx>, rest: impl IntoIterator<Item = GenericArg<'tcx>>, ) -> GenericArgsRef<'tcx>
pub fn mk_bound_variable_kinds_from_iter<I, T>(self, iter: I) -> T::Output
sourcepub fn emit_node_span_lint(
self,
lint: &'static Lint,
hir_id: HirId,
span: impl Into<MultiSpan>,
decorator: impl for<'a> LintDiagnostic<'a, ()>,
)
pub fn emit_node_span_lint( self, lint: &'static Lint, hir_id: HirId, span: impl Into<MultiSpan>, decorator: impl for<'a> LintDiagnostic<'a, ()>, )
Emit a lint at span
from a lint struct (some type that implements LintDiagnostic
,
typically generated by #[derive(LintDiagnostic)]
).
sourcepub fn node_span_lint(
self,
lint: &'static Lint,
hir_id: HirId,
span: impl Into<MultiSpan>,
decorate: impl for<'a, 'b> FnOnce(&'b mut Diag<'a, ()>),
)
pub fn node_span_lint( self, lint: &'static Lint, hir_id: HirId, span: impl Into<MultiSpan>, decorate: impl for<'a, 'b> FnOnce(&'b mut Diag<'a, ()>), )
Emit a lint at the appropriate level for a hir node, with an associated span.
sourcepub fn crate_level_attribute_injection_span(self, hir_id: HirId) -> Option<Span>
pub fn crate_level_attribute_injection_span(self, hir_id: HirId) -> Option<Span>
Find the crate root and the appropriate span where use
and outer attributes can be
inserted at.
pub fn disabled_nightly_features<E: EmissionGuarantee>( self, diag: &mut Diag<'_, E>, hir_id: Option<HirId>, features: impl IntoIterator<Item = (String, Symbol)>, )
sourcepub fn emit_node_lint(
self,
lint: &'static Lint,
id: HirId,
decorator: impl for<'a> LintDiagnostic<'a, ()>,
)
pub fn emit_node_lint( self, lint: &'static Lint, id: HirId, decorator: impl for<'a> LintDiagnostic<'a, ()>, )
Emit a lint from a lint struct (some type that implements LintDiagnostic
, typically
generated by #[derive(LintDiagnostic)]
).
sourcepub fn node_lint(
self,
lint: &'static Lint,
id: HirId,
decorate: impl for<'a, 'b> FnOnce(&'b mut Diag<'a, ()>),
)
pub fn node_lint( self, lint: &'static Lint, id: HirId, decorate: impl for<'a, 'b> FnOnce(&'b mut Diag<'a, ()>), )
Emit a lint at the appropriate level for a hir node.
pub fn in_scope_traits(self, id: HirId) -> Option<&'tcx [TraitCandidate]>
pub fn named_bound_var(self, id: HirId) -> Option<ResolvedArg>
pub fn is_late_bound(self, id: HirId) -> bool
pub fn late_bound_vars(self, id: HirId) -> &'tcx List<BoundVariableKind>
sourcepub fn map_opaque_lifetime_to_parent_lifetime(
self,
opaque_lifetime_param_def_id: LocalDefId,
) -> Region<'tcx>
pub fn map_opaque_lifetime_to_parent_lifetime( self, opaque_lifetime_param_def_id: LocalDefId, ) -> Region<'tcx>
Given the def-id of an early-bound lifetime on an opaque corresponding to
a duplicated captured lifetime, map it back to the early- or late-bound
lifetime of the function from which it originally as captured. If it is
a late-bound lifetime, this will represent the liberated (ReLateParam
) lifetime
of the signature.
sourcepub fn is_const_fn(self, def_id: DefId) -> bool
pub fn is_const_fn(self, def_id: DefId) -> bool
Whether the def_id
counts as const fn in the current crate, considering all active
feature gates
sourcepub fn is_const_trait_impl_raw(self, def_id: DefId) -> bool
pub fn is_const_trait_impl_raw(self, def_id: DefId) -> bool
Whether the trait impl is marked const. This does not consider stability or feature gates.
pub fn intrinsic( self, def_id: impl IntoQueryParam<DefId> + Copy, ) -> Option<IntrinsicDef>
pub fn next_trait_solver_globally(self) -> bool
pub fn next_trait_solver_in_coherence(self) -> bool
pub fn is_impl_trait_in_trait(self, def_id: DefId) -> bool
sourcepub fn module_children_local(self, def_id: LocalDefId) -> &'tcx [ModChild]
pub fn module_children_local(self, def_id: LocalDefId) -> &'tcx [ModChild]
Named module children from all kinds of items, including imports.
In addition to regular items this list also includes struct and variant constructors, and
items inside extern {}
blocks because all of them introduce names into parent module.
Module here is understood in name resolution sense - it can be a mod
item,
or a crate root, or an enum, or a trait.
This is not a query, making it a query causes perf regressions
(probably due to hashing spans in ModChild
ren).
pub fn resolver_for_lowering( self, ) -> &'tcx Steal<(ResolverAstLowering, Lrc<Crate>)>
sourcepub fn impl_trait_ref(
self,
def_id: impl IntoQueryParam<DefId>,
) -> Option<EarlyBinder<'tcx, TraitRef<'tcx>>>
pub fn impl_trait_ref( self, def_id: impl IntoQueryParam<DefId>, ) -> Option<EarlyBinder<'tcx, TraitRef<'tcx>>>
Given an impl_id
, return the trait it implements.
Return None
if this is an inherent impl.
pub fn impl_polarity(self, def_id: impl IntoQueryParam<DefId>) -> ImplPolarity
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn erase_regions<T>(self, value: T) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn erase_regions<T>(self, value: T) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
Returns an equivalent value with all free regions removed (note that late-bound regions remain, because they are important for subtyping, but they are anonymized and normalized as well)..
source§impl TyCtxt<'_>
impl TyCtxt<'_>
pub fn opt_parent(self, id: DefId) -> Option<DefId>
pub fn parent(self, id: DefId) -> DefId
pub fn opt_local_parent(self, id: LocalDefId) -> Option<LocalDefId>
pub fn local_parent(self, id: impl Into<LocalDefId>) -> LocalDefId
pub fn is_descendant_of(self, descendant: DefId, ancestor: DefId) -> bool
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
pub fn typeck_body(self, body: BodyId) -> &'tcx TypeckResults<'tcx>
pub fn provided_trait_methods( self, id: DefId, ) -> impl 'tcx + Iterator<Item = &'tcx AssocItem>
pub fn repr_options_of_def(self, did: LocalDefId) -> ReprOptions
sourcepub fn opt_item_name(self, def_id: DefId) -> Option<Symbol>
pub fn opt_item_name(self, def_id: DefId) -> Option<Symbol>
Look up the name of a definition across crates. This does not look at HIR.
sourcepub fn item_name(self, id: DefId) -> Symbol
pub fn item_name(self, id: DefId) -> Symbol
Look up the name of a definition across crates. This does not look at HIR.
This method will ICE if the corresponding item does not have a name. In these cases, use
opt_item_name
instead.
sourcepub fn opt_item_ident(self, def_id: DefId) -> Option<Ident>
pub fn opt_item_ident(self, def_id: DefId) -> Option<Ident>
Look up the name and span of a definition.
See item_name
for more information.
pub fn opt_associated_item(self, def_id: DefId) -> Option<AssocItem>
sourcepub fn opt_rpitit_info(self, def_id: DefId) -> Option<ImplTraitInTraitData>
pub fn opt_rpitit_info(self, def_id: DefId) -> Option<ImplTraitInTraitData>
If the def_id
is an associated type that was desugared from a
return-position impl Trait
from a trait, then provide the source info
about where that RPITIT came from.
sourcepub fn is_effects_desugared_assoc_ty(self, def_id: DefId) -> bool
pub fn is_effects_desugared_assoc_ty(self, def_id: DefId) -> bool
Whether the def_id
is an associated type that was desugared from a
#[const_trait]
or impl_const
.
pub fn find_field_index( self, ident: Ident, variant: &VariantDef, ) -> Option<FieldIdx>
sourcepub fn impls_are_allowed_to_overlap(
self,
def_id1: DefId,
def_id2: DefId,
) -> Option<ImplOverlapKind>
pub fn impls_are_allowed_to_overlap( self, def_id1: DefId, def_id2: DefId, ) -> Option<ImplOverlapKind>
Returns true
if the impls are the same polarity and the trait either
has no items or is annotated #[marker]
and prevents item overrides.
sourcepub fn expect_variant_res(self, res: Res) -> &'tcx VariantDef
pub fn expect_variant_res(self, res: Res) -> &'tcx VariantDef
Returns ty::VariantDef
if res
refers to a struct,
or variant or their constructors, panics otherwise.
sourcepub fn instance_mir(self, instance: InstanceKind<'tcx>) -> &'tcx Body<'tcx>
pub fn instance_mir(self, instance: InstanceKind<'tcx>) -> &'tcx Body<'tcx>
Returns the possibly-auto-generated MIR of a ty::InstanceKind
.
pub fn get_attrs_unchecked(self, did: DefId) -> &'tcx [Attribute]
sourcepub fn get_attrs(
self,
did: impl Into<DefId>,
attr: Symbol,
) -> impl Iterator<Item = &'tcx Attribute>
pub fn get_attrs( self, did: impl Into<DefId>, attr: Symbol, ) -> impl Iterator<Item = &'tcx Attribute>
Gets all attributes with the given name.
pub fn get_attrs_by_path<'attr>(
self,
did: DefId,
attr: &'attr [Symbol],
) -> impl Iterator<Item = &'tcx Attribute> + 'attrwhere
'tcx: 'attr,
pub fn get_attr( self, did: impl Into<DefId>, attr: Symbol, ) -> Option<&'tcx Attribute>
sourcepub fn has_attr(self, did: impl Into<DefId>, attr: Symbol) -> bool
pub fn has_attr(self, did: impl Into<DefId>, attr: Symbol) -> bool
Determines whether an item is annotated with an attribute.
sourcepub fn has_attrs_with_path(
self,
did: impl Into<DefId>,
attrs: &[Symbol],
) -> bool
pub fn has_attrs_with_path( self, did: impl Into<DefId>, attrs: &[Symbol], ) -> bool
Determines whether an item is annotated with a multi-segement attribute
sourcepub fn trait_is_auto(self, trait_def_id: DefId) -> bool
pub fn trait_is_auto(self, trait_def_id: DefId) -> bool
Returns true
if this is an auto trait
.
sourcepub fn trait_is_coinductive(self, trait_def_id: DefId) -> bool
pub fn trait_is_coinductive(self, trait_def_id: DefId) -> bool
Returns true
if this is coinductive, either because it is
an auto trait or because it has the #[rustc_coinductive]
attribute.
sourcepub fn trait_is_alias(self, trait_def_id: DefId) -> bool
pub fn trait_is_alias(self, trait_def_id: DefId) -> bool
Returns true
if this is a trait alias.
sourcepub fn coroutine_layout(
self,
def_id: DefId,
coroutine_kind_ty: Ty<'tcx>,
) -> Option<&'tcx CoroutineLayout<'tcx>>
pub fn coroutine_layout( self, def_id: DefId, coroutine_kind_ty: Ty<'tcx>, ) -> Option<&'tcx CoroutineLayout<'tcx>>
Returns layout of a coroutine. Layout might be unavailable if the coroutine is tainted by errors.
Takes coroutine_kind
which can be acquired from the CoroutineArgs::kind_ty
,
e.g. args.as_coroutine().kind_ty()
.
sourcepub fn trait_id_of_impl(self, def_id: DefId) -> Option<DefId>
pub fn trait_id_of_impl(self, def_id: DefId) -> Option<DefId>
Given the DefId
of an impl, returns the DefId
of the trait it implements.
If it implements no trait, returns None
.
sourcepub fn trait_of_item(self, def_id: DefId) -> Option<DefId>
pub fn trait_of_item(self, def_id: DefId) -> Option<DefId>
If the given DefId
describes an item belonging to a trait,
returns the DefId
of the trait that the trait item belongs to;
otherwise, returns None
.
sourcepub fn impl_of_method(self, def_id: DefId) -> Option<DefId>
pub fn impl_of_method(self, def_id: DefId) -> Option<DefId>
If the given DefId
describes a method belonging to an impl, returns the
DefId
of the impl that the method belongs to; otherwise, returns None
.
sourcepub fn is_builtin_derived(self, def_id: DefId) -> bool
pub fn is_builtin_derived(self, def_id: DefId) -> bool
Check if the given DefId
is #\[automatically_derived\]
, and
whether it was produced by expanding a builtin derive macro.
sourcepub fn is_automatically_derived(self, def_id: DefId) -> bool
pub fn is_automatically_derived(self, def_id: DefId) -> bool
Check if the given DefId
is #\[automatically_derived\]
.
sourcepub fn span_of_impl(self, impl_def_id: DefId) -> Result<Span, Symbol>
pub fn span_of_impl(self, impl_def_id: DefId) -> Result<Span, Symbol>
Looks up the span of impl_did
if the impl is local; otherwise returns Err
with the name of the crate containing the impl.
sourcepub fn hygienic_eq(
self,
use_name: Ident,
def_name: Ident,
def_parent_def_id: DefId,
) -> bool
pub fn hygienic_eq( self, use_name: Ident, def_name: Ident, def_parent_def_id: DefId, ) -> bool
Hygienically compares a use-site name (use_name
) for a field or an associated item with
its supposed definition name (def_name
). The method also needs DefId
of the supposed
definition’s parent/scope to perform comparison.
pub fn adjust_ident(self, ident: Ident, scope: DefId) -> Ident
pub fn adjust_ident_and_get_scope( self, ident: Ident, scope: DefId, block: HirId, ) -> (Ident, DefId)
pub fn is_const_fn_raw(self, def_id: DefId) -> bool
pub fn is_const_trait(self, def_id: DefId) -> bool
pub fn is_const_default_method(self, def_id: DefId) -> bool
pub fn impl_method_has_trait_impl_trait_tys(self, def_id: DefId) -> bool
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn ensure(self) -> TyCtxtEnsure<'tcx>
pub fn ensure(self) -> TyCtxtEnsure<'tcx>
Returns a transparent wrapper for TyCtxt
, which ensures queries
are executed instead of just returning their results.
sourcepub fn ensure_with_value(self) -> TyCtxtEnsureWithValue<'tcx>
pub fn ensure_with_value(self) -> TyCtxtEnsureWithValue<'tcx>
Returns a transparent wrapper for TyCtxt
, which ensures queries
are executed instead of just returning their results.
This version verifies that the computed result exists in the cache before returning.
sourcepub fn at(self, span: Span) -> TyCtxtAt<'tcx>
pub fn at(self, span: Span) -> TyCtxtAt<'tcx>
Returns a transparent wrapper for TyCtxt
which uses
span
as the location of queries performed through it.
pub fn try_mark_green(self, dep_node: &DepNode) -> bool
source§impl<'tcx> TyCtxt<'tcx>
impl<'tcx> TyCtxt<'tcx>
sourcepub fn trigger_delayed_bug(self, key: impl IntoQueryParam<DefId>)
pub fn trigger_delayed_bug(self, key: impl IntoQueryParam<DefId>)
This exists purely for testing the interactions between delayed bugs and incremental.
sourcepub fn registered_tools(self, key: ()) -> &'tcx RegisteredTools
pub fn registered_tools(self, key: ()) -> &'tcx RegisteredTools
Collects the list of all tools registered using #![register_tool]
.
sourcepub fn early_lint_checks(self, key: ())
pub fn early_lint_checks(self, key: ())
[query description - consider adding a doc-comment!] perform lints prior to macro expansion
sourcepub fn resolutions(self, key: ()) -> &'tcx ResolverGlobalCtxt
pub fn resolutions(self, key: ()) -> &'tcx ResolverGlobalCtxt
[query description - consider adding a doc-comment!] getting the resolver outputs
sourcepub fn resolver_for_lowering_raw(
self,
key: (),
) -> (&'tcx Steal<(ResolverAstLowering, Lrc<Crate>)>, &'tcx ResolverGlobalCtxt)
pub fn resolver_for_lowering_raw( self, key: (), ) -> (&'tcx Steal<(ResolverAstLowering, Lrc<Crate>)>, &'tcx ResolverGlobalCtxt)
[query description - consider adding a doc-comment!] getting the resolver for lowering
sourcepub fn source_span(self, key: impl IntoQueryParam<LocalDefId>) -> Span
pub fn source_span(self, key: impl IntoQueryParam<LocalDefId>) -> Span
Return the span for a definition.
Contrary to def_span
below, this query returns the full absolute span of the definition.
This span is meant for dep-tracking rather than diagnostics. It should not be used outside
of rustc_middle::hir::source_map.
sourcepub fn hir_crate(self, key: ()) -> &'tcx Crate<'tcx>
pub fn hir_crate(self, key: ()) -> &'tcx Crate<'tcx>
Represents crate as a whole (as distinct from the top-level crate module).
If you call hir_crate
(e.g., indirectly by calling tcx.hir().krate()
),
we will have to assume that any change means that you need to be recompiled.
This is because the hir_crate
query gives you access to all other items.
To avoid this fate, do not call tcx.hir().krate()
; instead,
prefer wrappers like tcx.visit_all_items_in_krate()
.
sourcepub fn hir_crate_items(self, key: ()) -> &'tcx ModuleItems
pub fn hir_crate_items(self, key: ()) -> &'tcx ModuleItems
All items in the crate.
sourcepub fn hir_module_items(self, key: LocalModDefId) -> &'tcx ModuleItems
pub fn hir_module_items(self, key: LocalModDefId) -> &'tcx ModuleItems
The items in a module.
This can be conveniently accessed by tcx.hir().visit_item_likes_in_module
.
Avoid calling this query directly.
sourcepub fn local_def_id_to_hir_id(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> HirId
pub fn local_def_id_to_hir_id( self, key: impl IntoQueryParam<LocalDefId>, ) -> HirId
Returns HIR ID for the given LocalDefId
.
sourcepub fn hir_owner_parent(self, key: OwnerId) -> HirId
pub fn hir_owner_parent(self, key: OwnerId) -> HirId
Gives access to the HIR node’s parent for the HIR owner key
.
This can be conveniently accessed by methods on tcx.hir()
.
Avoid calling this query directly.
sourcepub fn opt_hir_owner_nodes(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Option<&'tcx OwnerNodes<'tcx>>
pub fn opt_hir_owner_nodes( self, key: impl IntoQueryParam<LocalDefId>, ) -> Option<&'tcx OwnerNodes<'tcx>>
Gives access to the HIR nodes and bodies inside key
if it’s a HIR owner.
This can be conveniently accessed by methods on tcx.hir()
.
Avoid calling this query directly.
sourcepub fn hir_attrs(self, key: OwnerId) -> &'tcx AttributeMap<'tcx>
pub fn hir_attrs(self, key: OwnerId) -> &'tcx AttributeMap<'tcx>
Gives access to the HIR attributes inside the HIR owner key
.
This can be conveniently accessed by methods on tcx.hir()
.
Avoid calling this query directly.
sourcepub fn const_param_default(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, Const<'tcx>>
pub fn const_param_default( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, Const<'tcx>>
Given the def_id of a const-generic parameter, computes the associated default const
parameter. e.g. fn example<const N: usize=3>
called on N
would return 3
.
sourcepub fn type_of(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, Ty<'tcx>>
pub fn type_of( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, Ty<'tcx>>
sourcepub fn type_of_opaque(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<EarlyBinder<'tcx, Ty<'tcx>>, CyclePlaceholder>
pub fn type_of_opaque( self, key: impl IntoQueryParam<DefId>, ) -> Result<EarlyBinder<'tcx, Ty<'tcx>>, CyclePlaceholder>
Specialized instance of type_of
that detects cycles that are due to
revealing opaque because of an auto trait bound. Unless CyclePlaceholder
needs
to be handled separately, call type_of
instead.
sourcepub fn type_alias_is_lazy(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn type_alias_is_lazy(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] computing whether {path}
is a lazy type alias
sourcepub fn collect_return_position_impl_trait_in_trait_tys(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<&'tcx DefIdMap<EarlyBinder<'tcx, Ty<'tcx>>>, ErrorGuaranteed>
pub fn collect_return_position_impl_trait_in_trait_tys( self, key: impl IntoQueryParam<DefId>, ) -> Result<&'tcx DefIdMap<EarlyBinder<'tcx, Ty<'tcx>>>, ErrorGuaranteed>
[query description - consider adding a doc-comment!] comparing an impl and trait method signature, inferring any hidden impl Trait
types in the process
sourcepub fn is_type_alias_impl_trait(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_type_alias_impl_trait(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] determine whether the opaque is a type-alias impl trait
sourcepub fn unsizing_params_for_adt(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx BitSet<u32>
pub fn unsizing_params_for_adt( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx BitSet<u32>
[query description - consider adding a doc-comment!] determining what parameters of tcx.def_path_str(key)
can participate in unsizing
sourcepub fn analysis(self, key: ()) -> Result<(), ErrorGuaranteed>
pub fn analysis(self, key: ()) -> Result<(), ErrorGuaranteed>
The root query triggering all analysis passes like typeck or borrowck.
sourcepub fn check_expectations(self, key: Option<Symbol>)
pub fn check_expectations(self, key: Option<Symbol>)
This query checks the fulfillment of collected lint expectations. All lint emitting queries have to be done before this is executed to ensure that all expectations can be fulfilled.
This is an extra query to enable other drivers (like rustdoc) to
only execute a small subset of the analysis
query, while allowing
lints to be expected. In rustc, this query will be executed as part of
the analysis
query and doesn’t have to be called a second time.
Tools can additionally pass in a tool filter. That will restrict the
expectations to only trigger for lints starting with the listed tool
name. This is useful for cases were not all linting code from rustc
was called. With the default None
all registered lints will also
be checked for expectation fulfillment.
sourcepub fn generics_of(self, key: impl IntoQueryParam<DefId>) -> &'tcx Generics
pub fn generics_of(self, key: impl IntoQueryParam<DefId>) -> &'tcx Generics
Maps from the DefId
of an item (trait/struct/enum/fn) to its
associated generics.
sourcepub fn predicates_of(
self,
key: impl IntoQueryParam<DefId>,
) -> GenericPredicates<'tcx>
pub fn predicates_of( self, key: impl IntoQueryParam<DefId>, ) -> GenericPredicates<'tcx>
Maps from the DefId
of an item (trait/struct/enum/fn) to the
predicates (where-clauses) that must be proven true in order
to reference it. This is almost always the “predicates query”
that you want.
predicates_of
builds on predicates_defined_on
– in fact,
it is almost always the same as that query, except for the
case of traits. For traits, predicates_of
contains
an additional Self: Trait<...>
predicate that users don’t
actually write. This reflects the fact that to invoke the
trait (e.g., via Default::default
) you must supply types
that actually implement the trait. (However, this extra
predicate gets in the way of some checks, which are intended
to operate over only the actual where-clauses written by the
user.)
sourcepub fn opaque_types_defined_by(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx List<LocalDefId>
pub fn opaque_types_defined_by( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx List<LocalDefId>
[query description - consider adding a doc-comment!] computing the opaque types defined by tcx.def_path_str(key.to_def_id())
sourcepub fn explicit_item_bounds(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, &'tcx [(Clause<'tcx>, Span)]>
pub fn explicit_item_bounds( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, &'tcx [(Clause<'tcx>, Span)]>
Returns the list of bounds that are required to be satsified by a implementation or definition. For associated types, these must be satisfied for an implementation to be well-formed, and for opaque types, these are required to be satisfied by the hidden-type of the opaque.
Syntactially, these are the bounds written on the trait’s type
definition, or those after the impl
keyword for an opaque:
type X: Bound + 'lt
// ^^^^^^^^^^^
impl Debug + Display
// ^^^^^^^^^^^^^^^
key
is the DefId
of the associated type or opaque type.
Bounds from the parent (e.g. with nested impl trait) are not included.
sourcepub fn explicit_item_super_predicates(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, &'tcx [(Clause<'tcx>, Span)]>
pub fn explicit_item_super_predicates( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, &'tcx [(Clause<'tcx>, Span)]>
The set of item bounds (see TyCtxt::explicit_item_bounds
) that
share the Self
type of the item. These are a subset of the bounds
that may explicitly be used for things like closure signature
deduction.
sourcepub fn item_bounds(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, Clauses<'tcx>>
pub fn item_bounds( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, Clauses<'tcx>>
Elaborated version of the predicates from explicit_item_bounds
.
For example:
trait MyTrait {
type MyAType: Eq + ?Sized;
}
explicit_item_bounds
returns [<Self as MyTrait>::MyAType: Eq]
,
and item_bounds
returns
[
<Self as Trait>::MyAType: Eq,
<Self as Trait>::MyAType: PartialEq<<Self as Trait>::MyAType>
]
Bounds from the parent (e.g. with nested impl trait) are not included.
sourcepub fn item_super_predicates(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, Clauses<'tcx>>
pub fn item_super_predicates( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, Clauses<'tcx>>
[query description - consider adding a doc-comment!] elaborating item assumptions for tcx.def_path_str(key)
sourcepub fn item_non_self_assumptions(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, Clauses<'tcx>>
pub fn item_non_self_assumptions( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, Clauses<'tcx>>
[query description - consider adding a doc-comment!] elaborating item assumptions for tcx.def_path_str(key)
sourcepub fn impl_super_outlives(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, Clauses<'tcx>>
pub fn impl_super_outlives( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, Clauses<'tcx>>
[query description - consider adding a doc-comment!] elaborating supertrait outlives for trait of tcx.def_path_str(key)
sourcepub fn native_libraries(self, key: CrateNum) -> &'tcx Vec<NativeLib>
pub fn native_libraries(self, key: CrateNum) -> &'tcx Vec<NativeLib>
Look up all native libraries this crate depends on. These are assembled from the following places:
extern
blocks (depending on theirlink
attributes)- the
libs
(-l
) option
sourcepub fn shallow_lint_levels_on(self, key: OwnerId) -> &'tcx ShallowLintLevelMap
pub fn shallow_lint_levels_on(self, key: OwnerId) -> &'tcx ShallowLintLevelMap
[query description - consider adding a doc-comment!] looking up lint levels for tcx.def_path_str(key)
sourcepub fn lint_expectations(
self,
key: (),
) -> &'tcx Vec<(LintExpectationId, LintExpectation)>
pub fn lint_expectations( self, key: (), ) -> &'tcx Vec<(LintExpectationId, LintExpectation)>
[query description - consider adding a doc-comment!] computing #[expect]
ed lints in this crate
sourcepub fn expn_that_defined(self, key: impl IntoQueryParam<DefId>) -> ExpnId
pub fn expn_that_defined(self, key: impl IntoQueryParam<DefId>) -> ExpnId
[query description - consider adding a doc-comment!] getting the expansion that defined tcx.def_path_str(key)
sourcepub fn is_panic_runtime(self, key: CrateNum) -> bool
pub fn is_panic_runtime(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking if the crate is_panic_runtime
sourcepub fn representability(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Representability
pub fn representability( self, key: impl IntoQueryParam<LocalDefId>, ) -> Representability
Checks whether a type is representable or infinitely sized
sourcepub fn representability_adt_ty(self, key: Ty<'tcx>) -> Representability
pub fn representability_adt_ty(self, key: Ty<'tcx>) -> Representability
An implementation detail for the representability
query
sourcepub fn params_in_repr(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx BitSet<u32>
pub fn params_in_repr( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx BitSet<u32>
Set of param indexes for type params that are in the type’s representation
sourcepub fn thir_body(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Result<(&'tcx Steal<Thir<'tcx>>, ExprId), ErrorGuaranteed>
pub fn thir_body( self, key: impl IntoQueryParam<LocalDefId>, ) -> Result<(&'tcx Steal<Thir<'tcx>>, ExprId), ErrorGuaranteed>
Fetch the THIR for a given body. If typeck for that body failed, returns an empty Thir
.
sourcepub fn mir_keys(self, key: ()) -> &'tcx FxIndexSet<LocalDefId>
pub fn mir_keys(self, key: ()) -> &'tcx FxIndexSet<LocalDefId>
Set of all the DefId
s in this crate that have MIR associated with
them. This includes all the body owners, but also things like struct
constructors.
sourcepub fn mir_const_qualif(self, key: impl IntoQueryParam<DefId>) -> ConstQualifs
pub fn mir_const_qualif(self, key: impl IntoQueryParam<DefId>) -> ConstQualifs
Maps DefId’s that have an associated mir::Body
to the result
of the MIR const-checking pass. This is the set of qualifs in
the final value of a const
.
sourcepub fn mir_built(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx Steal<Body<'tcx>>
pub fn mir_built( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx Steal<Body<'tcx>>
Build the MIR for a given DefId
and prepare it for const qualification.
See the rustc dev guide for more info.
sourcepub fn thir_abstract_const(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<Option<EarlyBinder<'tcx, Const<'tcx>>>, ErrorGuaranteed>
pub fn thir_abstract_const( self, key: impl IntoQueryParam<DefId>, ) -> Result<Option<EarlyBinder<'tcx, Const<'tcx>>>, ErrorGuaranteed>
Try to build an abstract representation of the given constant.
sourcepub fn mir_drops_elaborated_and_const_checked(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx Steal<Body<'tcx>>
pub fn mir_drops_elaborated_and_const_checked( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx Steal<Body<'tcx>>
[query description - consider adding a doc-comment!] elaborating drops for tcx.def_path_str(key)
sourcepub fn mir_for_ctfe(self, key: impl IntoQueryParam<DefId>) -> &'tcx Body<'tcx>
pub fn mir_for_ctfe(self, key: impl IntoQueryParam<DefId>) -> &'tcx Body<'tcx>
[query description - consider adding a doc-comment!] caching mir of tcx.def_path_str(key)
for CTFE
sourcepub fn mir_promoted(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> (&'tcx Steal<Body<'tcx>>, &'tcx Steal<IndexVec<Promoted, Body<'tcx>>>)
pub fn mir_promoted( self, key: impl IntoQueryParam<LocalDefId>, ) -> (&'tcx Steal<Body<'tcx>>, &'tcx Steal<IndexVec<Promoted, Body<'tcx>>>)
[query description - consider adding a doc-comment!] promoting constants in MIR for tcx.def_path_str(key)
sourcepub fn closure_typeinfo(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> ClosureTypeInfo<'tcx>
pub fn closure_typeinfo( self, key: impl IntoQueryParam<LocalDefId>, ) -> ClosureTypeInfo<'tcx>
[query description - consider adding a doc-comment!] finding symbols for captures of closure tcx.def_path_str(key)
sourcepub fn closure_saved_names_of_captured_variables(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx IndexVec<FieldIdx, Symbol>
pub fn closure_saved_names_of_captured_variables( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx IndexVec<FieldIdx, Symbol>
Returns names of captured upvars for closures and coroutines.
Here are some examples:
name__field1__field2
when the upvar is captured by value._ref__name__field
when the upvar is captured by reference.
For coroutines this only contains upvars that are shared by all states.
sourcepub fn mir_coroutine_witnesses(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx Option<CoroutineLayout<'tcx>>
pub fn mir_coroutine_witnesses( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx Option<CoroutineLayout<'tcx>>
[query description - consider adding a doc-comment!] coroutine witness types for tcx.def_path_str(key)
sourcepub fn check_coroutine_obligations(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Result<(), ErrorGuaranteed>
pub fn check_coroutine_obligations( self, key: impl IntoQueryParam<LocalDefId>, ) -> Result<(), ErrorGuaranteed>
[query description - consider adding a doc-comment!] verify auto trait bounds for coroutine interior type tcx.def_path_str(key)
sourcepub fn optimized_mir(self, key: impl IntoQueryParam<DefId>) -> &'tcx Body<'tcx>
pub fn optimized_mir(self, key: impl IntoQueryParam<DefId>) -> &'tcx Body<'tcx>
MIR after our optimization passes have run. This is MIR that is ready for codegen. This is also the only query that can fetch non-local MIR, at present.
sourcepub fn coverage_attr_on(self, key: impl IntoQueryParam<LocalDefId>) -> bool
pub fn coverage_attr_on(self, key: impl IntoQueryParam<LocalDefId>) -> bool
Checks for the nearest #[coverage(off)]
or #[coverage(on)]
on
this def and any enclosing defs, up to the crate root.
Returns false
if #[coverage(off)]
was found, or true
if
either #[coverage(on)]
or no coverage attribute was found.
sourcepub fn coverage_ids_info(self, key: InstanceKind<'tcx>) -> &'tcx CoverageIdsInfo
pub fn coverage_ids_info(self, key: InstanceKind<'tcx>) -> &'tcx CoverageIdsInfo
Summarizes coverage IDs inserted by the InstrumentCoverage
MIR pass
(for compiler option -Cinstrument-coverage
), after MIR optimizations
have had a chance to potentially remove some of them.
sourcepub fn promoted_mir(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx IndexVec<Promoted, Body<'tcx>>
pub fn promoted_mir( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx IndexVec<Promoted, Body<'tcx>>
The DefId
is the DefId
of the containing MIR body. Promoteds do not have their own
DefId
. This function returns all promoteds in the specified body. The body references
promoteds by the DefId
and the mir::Promoted
index. This is necessary, because
after inlining a body may refer to promoteds from other bodies. In that case you still
need to use the DefId
of the original body.
sourcepub fn erase_regions_ty(self, key: Ty<'tcx>) -> Ty<'tcx>
pub fn erase_regions_ty(self, key: Ty<'tcx>) -> Ty<'tcx>
Erases regions from ty
to yield a new type.
Normally you would just use tcx.erase_regions(value)
,
however, which uses this query as a kind of cache.
sourcepub fn wasm_import_module_map(self, key: CrateNum) -> &'tcx DefIdMap<String>
pub fn wasm_import_module_map(self, key: CrateNum) -> &'tcx DefIdMap<String>
[query description - consider adding a doc-comment!] getting wasm import module map
sourcepub fn predicates_defined_on(
self,
key: impl IntoQueryParam<DefId>,
) -> GenericPredicates<'tcx>
pub fn predicates_defined_on( self, key: impl IntoQueryParam<DefId>, ) -> GenericPredicates<'tcx>
Maps from the DefId
of an item (trait/struct/enum/fn) to the
predicates (where-clauses) directly defined on it. This is
equal to the explicit_predicates_of
predicates plus the
inferred_outlives_of
predicates.
sourcepub fn trait_explicit_predicates_and_bounds(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> GenericPredicates<'tcx>
pub fn trait_explicit_predicates_and_bounds( self, key: impl IntoQueryParam<LocalDefId>, ) -> GenericPredicates<'tcx>
Returns everything that looks like a predicate written explicitly by the user on a trait item.
Traits are unusual, because predicates on associated types are converted into bounds on that type for backwards compatibility:
trait X where Self::U: Copy { type U; }
becomes
trait X { type U: Copy; }
explicit_predicates_of
and explicit_item_bounds
will then take
the appropriate subsets of the predicates here.
sourcepub fn explicit_predicates_of(
self,
key: impl IntoQueryParam<DefId>,
) -> GenericPredicates<'tcx>
pub fn explicit_predicates_of( self, key: impl IntoQueryParam<DefId>, ) -> GenericPredicates<'tcx>
Returns the predicates written explicitly by the user.
You should probably use predicates_of
unless you’re looking for
predicates with explicit spans for diagnostics purposes.
sourcepub fn inferred_outlives_of(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [(Clause<'tcx>, Span)]
pub fn inferred_outlives_of( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [(Clause<'tcx>, Span)]
Returns the inferred outlives predicates (e.g., for struct Foo<'a, T> { x: &'a T }
, this would return T: 'a
).
sourcepub fn explicit_super_predicates_of(
self,
key: impl IntoQueryParam<DefId>,
) -> GenericPredicates<'tcx>
pub fn explicit_super_predicates_of( self, key: impl IntoQueryParam<DefId>, ) -> GenericPredicates<'tcx>
Maps from the DefId
of a trait to the list of super-predicates of the trait,
before elaboration (so it doesn’t contain transitive 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 super-predicates must not be cyclic).
sourcepub fn explicit_implied_predicates_of(
self,
key: impl IntoQueryParam<DefId>,
) -> GenericPredicates<'tcx>
pub fn explicit_implied_predicates_of( self, key: impl IntoQueryParam<DefId>, ) -> GenericPredicates<'tcx>
The predicates of the trait that are implied during elaboration. This is a superset of the super-predicates of the trait, but a subset of the predicates of the trait. For regular traits, this includes all super-predicates and their associated type bounds. For trait aliases, currently, this includes all of the predicates of the trait alias.
sourcepub fn explicit_supertraits_containing_assoc_item(
self,
key: (DefId, Ident),
) -> GenericPredicates<'tcx>
pub fn explicit_supertraits_containing_assoc_item( self, key: (DefId, Ident), ) -> GenericPredicates<'tcx>
The Ident is the name of an associated type.The query returns only the subset
of supertraits that define the given associated type. This is used to avoid
cycles in resolving type-dependent associated item paths like T::Item
.
sourcepub fn type_param_predicates(
self,
key: (LocalDefId, LocalDefId, Ident),
) -> GenericPredicates<'tcx>
pub fn type_param_predicates( self, key: (LocalDefId, LocalDefId, Ident), ) -> GenericPredicates<'tcx>
To avoid cycles within the predicates of a single item we compute
per-type-parameter predicates for resolving T::AssocTy
.
sourcepub fn trait_def(self, key: impl IntoQueryParam<DefId>) -> &'tcx TraitDef
pub fn trait_def(self, key: impl IntoQueryParam<DefId>) -> &'tcx TraitDef
[query description - consider adding a doc-comment!] computing trait definition for tcx.def_path_str(key)
sourcepub fn adt_def(self, key: impl IntoQueryParam<DefId>) -> AdtDef<'tcx>
pub fn adt_def(self, key: impl IntoQueryParam<DefId>) -> AdtDef<'tcx>
[query description - consider adding a doc-comment!] computing ADT definition for tcx.def_path_str(key)
sourcepub fn adt_destructor(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<Destructor>
pub fn adt_destructor( self, key: impl IntoQueryParam<DefId>, ) -> Option<Destructor>
[query description - consider adding a doc-comment!] computing Drop
impl for tcx.def_path_str(key)
sourcepub fn adt_async_destructor(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<AsyncDestructor>
pub fn adt_async_destructor( self, key: impl IntoQueryParam<DefId>, ) -> Option<AsyncDestructor>
[query description - consider adding a doc-comment!] computing AsyncDrop
impl for tcx.def_path_str(key)
sourcepub fn adt_sized_constraint(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>
pub fn adt_sized_constraint( self, key: impl IntoQueryParam<DefId>, ) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>
[query description - consider adding a doc-comment!] computing the Sized
constraint for tcx.def_path_str(key)
sourcepub fn adt_dtorck_constraint(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<&'tcx DropckConstraint<'tcx>, NoSolution>
pub fn adt_dtorck_constraint( self, key: impl IntoQueryParam<DefId>, ) -> Result<&'tcx DropckConstraint<'tcx>, NoSolution>
[query description - consider adding a doc-comment!] computing drop-check constraints for tcx.def_path_str(key)
sourcepub fn constness(self, key: impl IntoQueryParam<DefId>) -> Constness
pub fn constness(self, key: impl IntoQueryParam<DefId>) -> Constness
Returns true
if this is a const fn, use the is_const_fn
to know whether your crate
actually sees it as const fn (e.g., the const-fn-ness might be unstable and you might
not have the feature gate active).
Do not call this function manually. It is only meant to cache the base data for the
is_const_fn
function. Consider using is_const_fn
or is_const_fn_raw
instead.
sourcepub fn asyncness(self, key: impl IntoQueryParam<DefId>) -> Asyncness
pub fn asyncness(self, key: impl IntoQueryParam<DefId>) -> Asyncness
[query description - consider adding a doc-comment!] checking if the function is async: tcx.def_path_str(key)
sourcepub fn is_promotable_const_fn(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_promotable_const_fn(self, key: impl IntoQueryParam<DefId>) -> bool
Returns true
if calls to the function may be promoted.
This is either because the function is e.g., a tuple-struct or tuple-variant
constructor, or because it has the #[rustc_promotable]
attribute. The attribute should
be removed in the future in favour of some form of check which figures out whether the
function does not inspect the bits of any of its arguments (so is essentially just a
constructor function).
sourcepub fn coroutine_kind(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<CoroutineKind>
pub fn coroutine_kind( self, key: impl IntoQueryParam<DefId>, ) -> Option<CoroutineKind>
Returns Some(coroutine_kind)
if the node pointed to by def_id
is a coroutine.
sourcepub fn coroutine_for_closure(self, key: impl IntoQueryParam<DefId>) -> DefId
pub fn coroutine_for_closure(self, key: impl IntoQueryParam<DefId>) -> DefId
[query description - consider adding a doc-comment!] Given a coroutine-closure def id, return the def id of the coroutine returned by it
sourcepub fn crate_variances(self, key: ()) -> &'tcx CrateVariancesMap<'tcx>
pub fn crate_variances(self, key: ()) -> &'tcx CrateVariancesMap<'tcx>
Gets a map with the variance of every item; use variances_of
instead.
sourcepub fn variances_of(self, key: impl IntoQueryParam<DefId>) -> &'tcx [Variance]
pub fn variances_of(self, key: impl IntoQueryParam<DefId>) -> &'tcx [Variance]
Maps from the DefId
of a type or region parameter to its (inferred) variance.
sourcepub fn inferred_outlives_crate(self, key: ()) -> &'tcx CratePredicatesMap<'tcx>
pub fn inferred_outlives_crate(self, key: ()) -> &'tcx CratePredicatesMap<'tcx>
Maps from thee DefId
of a type to its (inferred) outlives.
sourcepub fn associated_item_def_ids(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [DefId]
pub fn associated_item_def_ids( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [DefId]
Maps from an impl/trait or struct/variant DefId
to a list of the DefId
s of its associated items or fields.
sourcepub fn associated_item(self, key: impl IntoQueryParam<DefId>) -> AssocItem
pub fn associated_item(self, key: impl IntoQueryParam<DefId>) -> AssocItem
Maps from a trait/impl item to the trait/impl item “descriptor”.
sourcepub fn associated_items(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx AssocItems
pub fn associated_items( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx AssocItems
Collects the associated items defined on a trait or impl.
sourcepub fn impl_item_implementor_ids(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx DefIdMap<DefId>
pub fn impl_item_implementor_ids( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx DefIdMap<DefId>
Maps from associated items on a trait to the corresponding associated
item on the impl specified by impl_id
.
For example, with the following code
struct Type {}
// DefId
trait Trait { // trait_id
fn f(); // trait_f
fn g() {} // trait_g
}
impl Trait for Type { // impl_id
fn f() {} // impl_f
fn g() {} // impl_g
}
The map returned for tcx.impl_item_implementor_ids(impl_id)
would be
{ trait_f: impl_f, trait_g: impl_g }
sourcepub fn associated_types_for_impl_traits_in_associated_fn(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [DefId]
pub fn associated_types_for_impl_traits_in_associated_fn( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [DefId]
Given fn_def_id
of a trait or of an impl that implements a given trait:
if fn_def_id
is the def id of a function defined inside a trait, then it creates and returns
the associated items that correspond to each impl trait in return position for that trait.
if fn_def_id
is the def id of a function defined inside an impl that implements a trait, then it
creates and returns the associated items that correspond to each impl trait in return position
of the implemented trait.
sourcepub fn associated_type_for_effects(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<DefId>
pub fn associated_type_for_effects( self, key: impl IntoQueryParam<DefId>, ) -> Option<DefId>
[query description - consider adding a doc-comment!] creating associated items for effects in tcx.def_path_str(def_id)
sourcepub fn associated_type_for_impl_trait_in_trait(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> LocalDefId
pub fn associated_type_for_impl_trait_in_trait( self, key: impl IntoQueryParam<LocalDefId>, ) -> LocalDefId
Given an impl trait in trait opaque_ty_def_id
, create and return the corresponding
associated item.
sourcepub fn impl_trait_header(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<ImplTraitHeader<'tcx>>
pub fn impl_trait_header( self, key: impl IntoQueryParam<DefId>, ) -> Option<ImplTraitHeader<'tcx>>
Given an impl_id
, return the trait it implements along with some header information.
Return None
if this is an inherent impl.
sourcepub fn self_ty_of_trait_impl_enabling_order_dep_trait_object_hack(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>
pub fn self_ty_of_trait_impl_enabling_order_dep_trait_object_hack( self, key: impl IntoQueryParam<DefId>, ) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>
[query description - consider adding a doc-comment!] computing self type wrt issue #33140 tcx.def_path_str(key)
sourcepub fn inherent_impls(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<&'tcx [DefId], ErrorGuaranteed>
pub fn inherent_impls( self, key: impl IntoQueryParam<DefId>, ) -> Result<&'tcx [DefId], ErrorGuaranteed>
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.
sourcepub fn incoherent_impls(
self,
key: SimplifiedType,
) -> Result<&'tcx [DefId], ErrorGuaranteed>
pub fn incoherent_impls( self, key: SimplifiedType, ) -> Result<&'tcx [DefId], ErrorGuaranteed>
[query description - consider adding a doc-comment!] collecting all inherent impls for {:?}
sourcepub fn check_unsafety(self, key: impl IntoQueryParam<LocalDefId>)
pub fn check_unsafety(self, key: impl IntoQueryParam<LocalDefId>)
Unsafety-check this LocalDefId
.
sourcepub fn assumed_wf_types(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx [(Ty<'tcx>, Span)]
pub fn assumed_wf_types( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx [(Ty<'tcx>, Span)]
Returns the types assumed to be well formed while “inside” of the given item.
Note that we’ve liberated the late bound regions of function signatures, so this can not be used to check whether these types are well formed.
sourcepub fn assumed_wf_types_for_rpitit(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [(Ty<'tcx>, Span)]
pub fn assumed_wf_types_for_rpitit( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [(Ty<'tcx>, Span)]
We need to store the assumed_wf_types for an RPITIT so that impls of foreign traits with return-position impl trait in traits can inherit the right wf types.
sourcepub fn fn_sig(
self,
key: impl IntoQueryParam<DefId>,
) -> EarlyBinder<'tcx, PolyFnSig<'tcx>>
pub fn fn_sig( self, key: impl IntoQueryParam<DefId>, ) -> EarlyBinder<'tcx, PolyFnSig<'tcx>>
Computes the signature of the function.
sourcepub fn lint_mod(self, key: LocalModDefId)
pub fn lint_mod(self, key: LocalModDefId)
Performs lint checking for the module.
sourcepub fn check_unused_traits(self, key: ())
pub fn check_unused_traits(self, key: ())
[query description - consider adding a doc-comment!] checking unused trait imports in crate
sourcepub fn check_mod_attrs(self, key: LocalModDefId)
pub fn check_mod_attrs(self, key: LocalModDefId)
Checks the attributes in the module.
sourcepub fn check_mod_unstable_api_usage(self, key: LocalModDefId)
pub fn check_mod_unstable_api_usage(self, key: LocalModDefId)
Checks for uses of unstable APIs in the module.
sourcepub fn check_mod_const_bodies(self, key: LocalModDefId)
pub fn check_mod_const_bodies(self, key: LocalModDefId)
Checks the const bodies in the module for illegal operations (e.g. if
or loop
).
sourcepub fn check_mod_loops(self, key: LocalModDefId)
pub fn check_mod_loops(self, key: LocalModDefId)
Checks the loops in the module.
sourcepub fn check_mod_naked_functions(self, key: LocalModDefId)
pub fn check_mod_naked_functions(self, key: LocalModDefId)
[query description - consider adding a doc-comment!] checking naked functions in describe_as_module(key, tcx)
sourcepub fn check_mod_privacy(self, key: LocalModDefId)
pub fn check_mod_privacy(self, key: LocalModDefId)
[query description - consider adding a doc-comment!] checking privacy in describe_as_module(key.to_local_def_id(), tcx)
sourcepub fn check_liveness(self, key: impl IntoQueryParam<LocalDefId>)
pub fn check_liveness(self, key: impl IntoQueryParam<LocalDefId>)
[query description - consider adding a doc-comment!] checking liveness of variables in tcx.def_path_str(key)
sourcepub fn live_symbols_and_ignored_derived_traits(
self,
key: (),
) -> &'tcx (LocalDefIdSet, LocalDefIdMap<Vec<(DefId, DefId)>>)
pub fn live_symbols_and_ignored_derived_traits( self, key: (), ) -> &'tcx (LocalDefIdSet, LocalDefIdMap<Vec<(DefId, DefId)>>)
Return the live symbols in the crate for dead code check.
The second return value maps from ADTs to ignored derived traits (e.g. Debug and Clone) and their respective impl (i.e., part of the derive macro)
sourcepub fn check_mod_deathness(self, key: LocalModDefId)
pub fn check_mod_deathness(self, key: LocalModDefId)
[query description - consider adding a doc-comment!] checking deathness of variables in describe_as_module(key, tcx)
sourcepub fn check_mod_type_wf(
self,
key: LocalModDefId,
) -> Result<(), ErrorGuaranteed>
pub fn check_mod_type_wf( self, key: LocalModDefId, ) -> Result<(), ErrorGuaranteed>
[query description - consider adding a doc-comment!] checking that types are well-formed in describe_as_module(key, tcx)
sourcepub fn coerce_unsized_info(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<CoerceUnsizedInfo, ErrorGuaranteed>
pub fn coerce_unsized_info( self, key: impl IntoQueryParam<DefId>, ) -> Result<CoerceUnsizedInfo, ErrorGuaranteed>
Caches CoerceUnsized
kinds for impls on custom types.
sourcepub fn typeck(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx TypeckResults<'tcx>
pub fn typeck( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx TypeckResults<'tcx>
[query description - consider adding a doc-comment!] type-checking tcx.def_path_str(key)
sourcepub fn diagnostic_only_typeck(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx TypeckResults<'tcx>
pub fn diagnostic_only_typeck( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx TypeckResults<'tcx>
[query description - consider adding a doc-comment!] type-checking tcx.def_path_str(key)
sourcepub fn used_trait_imports(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx UnordSet<LocalDefId>
pub fn used_trait_imports( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx UnordSet<LocalDefId>
[query description - consider adding a doc-comment!] finding used_trait_imports tcx.def_path_str(key)
sourcepub fn coherent_trait(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<(), ErrorGuaranteed>
pub fn coherent_trait( self, key: impl IntoQueryParam<DefId>, ) -> Result<(), ErrorGuaranteed>
[query description - consider adding a doc-comment!] coherence checking all impls of trait tcx.def_path_str(def_id)
sourcepub fn mir_borrowck(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx BorrowCheckResult<'tcx>
pub fn mir_borrowck( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx BorrowCheckResult<'tcx>
Borrow-checks the function body. If this is a closure, returns additional requirements that the closure’s creator must verify.
sourcepub fn crate_inherent_impls(
self,
key: (),
) -> Result<&'tcx CrateInherentImpls, ErrorGuaranteed>
pub fn crate_inherent_impls( self, key: (), ) -> Result<&'tcx CrateInherentImpls, ErrorGuaranteed>
Gets a complete map from all types to their inherent impls. Not meant to be used directly outside of coherence.
sourcepub fn crate_inherent_impls_overlap_check(
self,
key: (),
) -> Result<(), ErrorGuaranteed>
pub fn crate_inherent_impls_overlap_check( self, key: (), ) -> Result<(), ErrorGuaranteed>
Checks all types in the crate for overlap in their inherent impls. Reports errors. Not meant to be used directly outside of coherence.
sourcepub fn orphan_check_impl(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Result<(), ErrorGuaranteed>
pub fn orphan_check_impl( self, key: impl IntoQueryParam<LocalDefId>, ) -> Result<(), ErrorGuaranteed>
Checks whether all impls in the crate pass the overlap check, returning which impls fail it. If all impls are correct, the returned slice is empty.
sourcepub fn mir_callgraph_reachable(self, key: (Instance<'tcx>, LocalDefId)) -> bool
pub fn mir_callgraph_reachable(self, key: (Instance<'tcx>, LocalDefId)) -> bool
Check whether the function has any recursion that could cause the inliner to trigger a cycle. Returns the call stack causing the cycle. The call stack does not contain the current function, just all intermediate functions.
sourcepub fn mir_inliner_callees(
self,
key: InstanceKind<'tcx>,
) -> &'tcx [(DefId, GenericArgsRef<'tcx>)]
pub fn mir_inliner_callees( self, key: InstanceKind<'tcx>, ) -> &'tcx [(DefId, GenericArgsRef<'tcx>)]
Obtain all the calls into other local functions
sourcepub fn tag_for_variant(self, key: (Ty<'tcx>, VariantIdx)) -> Option<ScalarInt>
pub fn tag_for_variant(self, key: (Ty<'tcx>, VariantIdx)) -> Option<ScalarInt>
Computes the tag (if any) for a given type and variant.
sourcepub fn eval_to_allocation_raw(
self,
key: ParamEnvAnd<'tcx, GlobalId<'tcx>>,
) -> EvalToAllocationRawResult<'tcx>
pub fn eval_to_allocation_raw( self, key: ParamEnvAnd<'tcx, GlobalId<'tcx>>, ) -> EvalToAllocationRawResult<'tcx>
Evaluates a constant and returns the computed allocation.
Do not use this directly, use the eval_to_const_value
or eval_to_valtree
instead.
sourcepub fn eval_static_initializer(
self,
key: impl IntoQueryParam<DefId>,
) -> EvalStaticInitializerRawResult<'tcx>
pub fn eval_static_initializer( self, key: impl IntoQueryParam<DefId>, ) -> EvalStaticInitializerRawResult<'tcx>
Evaluate a static’s initializer, returning the allocation of the initializer’s memory.
sourcepub fn eval_to_const_value_raw(
self,
key: ParamEnvAnd<'tcx, GlobalId<'tcx>>,
) -> EvalToConstValueResult<'tcx>
pub fn eval_to_const_value_raw( self, key: ParamEnvAnd<'tcx, GlobalId<'tcx>>, ) -> EvalToConstValueResult<'tcx>
Evaluates const items or anonymous constants (such as enum variant explicit discriminants or array lengths) into a representation suitable for the type system and const generics.
Do not use this directly, use one of the following wrappers: tcx.const_eval_poly
,
tcx.const_eval_resolve
, tcx.const_eval_instance
, or tcx.const_eval_global_id
.
sourcepub fn eval_to_valtree(
self,
key: ParamEnvAnd<'tcx, GlobalId<'tcx>>,
) -> EvalToValTreeResult<'tcx>
pub fn eval_to_valtree( self, key: ParamEnvAnd<'tcx, GlobalId<'tcx>>, ) -> EvalToValTreeResult<'tcx>
Evaluate a constant and convert it to a type level constant or
return None
if that is not possible.
sourcepub fn valtree_to_const_val(
self,
key: (Ty<'tcx>, ValTree<'tcx>),
) -> ConstValue<'tcx>
pub fn valtree_to_const_val( self, key: (Ty<'tcx>, ValTree<'tcx>), ) -> ConstValue<'tcx>
Converts a type level constant value into ConstValue
sourcepub fn destructure_const(self, key: Const<'tcx>) -> DestructuredConst<'tcx>
pub fn destructure_const(self, key: Const<'tcx>) -> DestructuredConst<'tcx>
Destructures array, ADT or tuple constants into the constants of their fields.
sourcepub fn lit_to_const(
self,
key: LitToConstInput<'tcx>,
) -> Result<Const<'tcx>, LitToConstError>
pub fn lit_to_const( self, key: LitToConstInput<'tcx>, ) -> Result<Const<'tcx>, LitToConstError>
[query description - consider adding a doc-comment!] converting literal to const
sourcepub fn check_match(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Result<(), ErrorGuaranteed>
pub fn check_match( self, key: impl IntoQueryParam<LocalDefId>, ) -> Result<(), ErrorGuaranteed>
[query description - consider adding a doc-comment!] match-checking tcx.def_path_str(key)
sourcepub fn effective_visibilities(self, key: ()) -> &'tcx EffectiveVisibilities
pub fn effective_visibilities(self, key: ()) -> &'tcx EffectiveVisibilities
Performs part of the privacy check and computes effective visibilities.
sourcepub fn check_private_in_public(self, key: ())
pub fn check_private_in_public(self, key: ())
[query description - consider adding a doc-comment!] checking for private elements in public interfaces
sourcepub fn reachable_set(self, key: ()) -> &'tcx LocalDefIdSet
pub fn reachable_set(self, key: ()) -> &'tcx LocalDefIdSet
[query description - consider adding a doc-comment!] reachability
sourcepub fn region_scope_tree(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx ScopeTree
pub fn region_scope_tree( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx ScopeTree
Per-body region::ScopeTree
. The DefId
should be the owner DefId
for the body;
in the case of closures, this will be redirected to the enclosing function.
sourcepub fn mir_shims(self, key: InstanceKind<'tcx>) -> &'tcx Body<'tcx>
pub fn mir_shims(self, key: InstanceKind<'tcx>) -> &'tcx Body<'tcx>
Generates a MIR body for the shim.
sourcepub fn symbol_name(self, key: Instance<'tcx>) -> SymbolName<'tcx>
pub fn symbol_name(self, key: Instance<'tcx>) -> SymbolName<'tcx>
The symbol_name
query provides the symbol name for calling a
given instance from the local crate. In particular, it will also
look up the correct symbol name of instances from upstream crates.
sourcepub fn def_kind(self, key: impl IntoQueryParam<DefId>) -> DefKind
pub fn def_kind(self, key: impl IntoQueryParam<DefId>) -> DefKind
[query description - consider adding a doc-comment!] looking up definition kind of tcx.def_path_str(def_id)
sourcepub fn def_span(self, key: impl IntoQueryParam<DefId>) -> Span
pub fn def_span(self, key: impl IntoQueryParam<DefId>) -> Span
Gets the span for the definition.
sourcepub fn def_ident_span(self, key: impl IntoQueryParam<DefId>) -> Option<Span>
pub fn def_ident_span(self, key: impl IntoQueryParam<DefId>) -> Option<Span>
Gets the span for the identifier of the definition.
sourcepub fn lookup_stability(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<Stability>
pub fn lookup_stability( self, key: impl IntoQueryParam<DefId>, ) -> Option<Stability>
[query description - consider adding a doc-comment!] looking up stability of tcx.def_path_str(def_id)
sourcepub fn lookup_const_stability(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<ConstStability>
pub fn lookup_const_stability( self, key: impl IntoQueryParam<DefId>, ) -> Option<ConstStability>
[query description - consider adding a doc-comment!] looking up const stability of tcx.def_path_str(def_id)
sourcepub fn lookup_default_body_stability(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<DefaultBodyStability>
pub fn lookup_default_body_stability( self, key: impl IntoQueryParam<DefId>, ) -> Option<DefaultBodyStability>
[query description - consider adding a doc-comment!] looking up default body stability of tcx.def_path_str(def_id)
sourcepub fn should_inherit_track_caller(
self,
key: impl IntoQueryParam<DefId>,
) -> bool
pub fn should_inherit_track_caller( self, key: impl IntoQueryParam<DefId>, ) -> bool
[query description - consider adding a doc-comment!] computing should_inherit_track_caller of tcx.def_path_str(def_id)
sourcepub fn lookup_deprecation_entry(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<DeprecationEntry>
pub fn lookup_deprecation_entry( self, key: impl IntoQueryParam<DefId>, ) -> Option<DeprecationEntry>
[query description - consider adding a doc-comment!] checking whether tcx.def_path_str(def_id)
is deprecated
Determines whether an item is annotated with doc(hidden)
.
sourcepub fn is_doc_notable_trait(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_doc_notable_trait(self, key: impl IntoQueryParam<DefId>) -> bool
Determines whether an item is annotated with doc(notable_trait)
.
sourcepub fn item_attrs(self, key: impl IntoQueryParam<DefId>) -> &'tcx [Attribute]
pub fn item_attrs(self, key: impl IntoQueryParam<DefId>) -> &'tcx [Attribute]
Returns the attributes on the item at def_id
.
Do not use this directly, use tcx.get_attrs
instead.
sourcepub fn codegen_fn_attrs(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx CodegenFnAttrs
pub fn codegen_fn_attrs( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx CodegenFnAttrs
[query description - consider adding a doc-comment!] computing codegen attributes of tcx.def_path_str(def_id)
sourcepub fn asm_target_features(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx FxIndexSet<Symbol>
pub fn asm_target_features( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx FxIndexSet<Symbol>
[query description - consider adding a doc-comment!] computing target features for inline asm of tcx.def_path_str(def_id)
sourcepub fn fn_arg_names(self, key: impl IntoQueryParam<DefId>) -> &'tcx [Ident]
pub fn fn_arg_names(self, key: impl IntoQueryParam<DefId>) -> &'tcx [Ident]
[query description - consider adding a doc-comment!] looking up function parameter names for tcx.def_path_str(def_id)
sourcepub fn rendered_const(self, key: impl IntoQueryParam<DefId>) -> &'tcx String
pub fn rendered_const(self, key: impl IntoQueryParam<DefId>) -> &'tcx String
Gets the rendered value of the specified constant or associated constant. Used by rustdoc.
sourcepub fn rendered_precise_capturing_args(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<&'tcx [Symbol]>
pub fn rendered_precise_capturing_args( self, key: impl IntoQueryParam<DefId>, ) -> Option<&'tcx [Symbol]>
Gets the rendered precise capturing args for an opaque for use in rustdoc.
sourcepub fn impl_parent(self, key: impl IntoQueryParam<DefId>) -> Option<DefId>
pub fn impl_parent(self, key: impl IntoQueryParam<DefId>) -> Option<DefId>
[query description - consider adding a doc-comment!] computing specialization parent impl of tcx.def_path_str(def_id)
sourcepub fn is_ctfe_mir_available(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_ctfe_mir_available(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] checking if item has CTFE MIR available: tcx.def_path_str(key)
sourcepub fn is_mir_available(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_mir_available(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] checking if item has MIR available: tcx.def_path_str(key)
sourcepub fn own_existential_vtable_entries(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [DefId]
pub fn own_existential_vtable_entries( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [DefId]
[query description - consider adding a doc-comment!] finding all existential vtable entries for trait tcx.def_path_str(key)
sourcepub fn vtable_entries(self, key: PolyTraitRef<'tcx>) -> &'tcx [VtblEntry<'tcx>]
pub fn vtable_entries(self, key: PolyTraitRef<'tcx>) -> &'tcx [VtblEntry<'tcx>]
[query description - consider adding a doc-comment!] finding all vtable entries for trait tcx.def_path_str(key.def_id())
sourcepub fn first_method_vtable_slot(self, key: TraitRef<'tcx>) -> usize
pub fn first_method_vtable_slot(self, key: TraitRef<'tcx>) -> usize
[query description - consider adding a doc-comment!] finding the slot within the vtable of key.self_ty()
for the implementation of key.print_only_trait_name()
sourcepub fn supertrait_vtable_slot(self, key: (Ty<'tcx>, Ty<'tcx>)) -> Option<usize>
pub fn supertrait_vtable_slot(self, key: (Ty<'tcx>, Ty<'tcx>)) -> Option<usize>
[query description - consider adding a doc-comment!] finding the slot within vtable for trait object key.1
vtable ptr during trait upcasting coercion from key.0
vtable
sourcepub fn vtable_allocation(
self,
key: (Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>),
) -> AllocId
pub fn vtable_allocation( self, key: (Ty<'tcx>, Option<PolyExistentialTraitRef<'tcx>>), ) -> AllocId
[query description - consider adding a doc-comment!] vtable const allocation for < key.0
as key.1.map(| trait_ref | format! ("{trait_ref}")).unwrap_or("_".to_owned())
>
sourcepub fn codegen_select_candidate(
self,
key: (ParamEnv<'tcx>, TraitRef<'tcx>),
) -> Result<&'tcx ImplSource<'tcx, ()>, CodegenObligationError>
pub fn codegen_select_candidate( self, key: (ParamEnv<'tcx>, TraitRef<'tcx>), ) -> Result<&'tcx ImplSource<'tcx, ()>, CodegenObligationError>
[query description - consider adding a doc-comment!] computing candidate for key.1
sourcepub fn all_local_trait_impls(
self,
key: (),
) -> &'tcx FxIndexMap<DefId, Vec<LocalDefId>>
pub fn all_local_trait_impls( self, key: (), ) -> &'tcx FxIndexMap<DefId, Vec<LocalDefId>>
Return all impl
blocks in the current crate.
sourcepub fn trait_impls_of(self, key: impl IntoQueryParam<DefId>) -> &'tcx TraitImpls
pub fn trait_impls_of(self, key: impl IntoQueryParam<DefId>) -> &'tcx TraitImpls
Given a trait trait_id
, return all known impl
blocks.
sourcepub fn specialization_graph_of(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<&'tcx Graph, ErrorGuaranteed>
pub fn specialization_graph_of( self, key: impl IntoQueryParam<DefId>, ) -> Result<&'tcx Graph, ErrorGuaranteed>
[query description - consider adding a doc-comment!] building specialization graph of trait tcx.def_path_str(trait_id)
sourcepub fn object_safety_violations(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [ObjectSafetyViolation]
pub fn object_safety_violations( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [ObjectSafetyViolation]
[query description - consider adding a doc-comment!] determining object safety of trait tcx.def_path_str(trait_id)
sourcepub fn is_object_safe(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_object_safe(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] checking if trait tcx.def_path_str(trait_id)
is object safe
sourcepub fn param_env(self, key: impl IntoQueryParam<DefId>) -> ParamEnv<'tcx>
pub fn param_env(self, key: impl IntoQueryParam<DefId>) -> ParamEnv<'tcx>
Gets the ParameterEnvironment for a given item; this environment
will be in “user-facing” mode, meaning that it is suitable for
type-checking etc, and it does not normalize specializable
associated types. This is almost always what you want,
unless you are doing MIR optimizations, in which case you
might want to use reveal_all()
method to change modes.
sourcepub fn param_env_reveal_all_normalized(
self,
key: impl IntoQueryParam<DefId>,
) -> ParamEnv<'tcx>
pub fn param_env_reveal_all_normalized( self, key: impl IntoQueryParam<DefId>, ) -> ParamEnv<'tcx>
Like param_env
, but returns the ParamEnv
in Reveal::All
mode.
Prefer this over tcx.param_env(def_id).with_reveal_all_normalized(tcx)
,
as this method is more efficient.
sourcepub fn is_copy_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn is_copy_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Trait selection queries. These are best used by invoking ty.is_copy_modulo_regions()
,
ty.is_copy()
, etc, since that will prune the environment where possible.
sourcepub fn is_sized_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn is_sized_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Query backing Ty::is_sized
.
sourcepub fn is_freeze_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn is_freeze_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Query backing Ty::is_freeze
.
sourcepub fn is_unpin_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn is_unpin_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Query backing Ty::is_unpin
.
sourcepub fn needs_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn needs_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Query backing Ty::needs_drop
.
sourcepub fn needs_async_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn needs_async_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Query backing Ty::needs_async_drop
.
sourcepub fn has_significant_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
pub fn has_significant_drop_raw(self, key: ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool
Query backing Ty::has_significant_drop_raw
.
sourcepub fn has_structural_eq_impl(self, key: Ty<'tcx>) -> bool
pub fn has_structural_eq_impl(self, key: Ty<'tcx>) -> bool
Query backing Ty::is_structural_eq_shallow
.
This is only correct for ADTs. Call is_structural_eq_shallow
to handle all types
correctly.
sourcepub fn adt_drop_tys(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<&'tcx List<Ty<'tcx>>, AlwaysRequiresDrop>
pub fn adt_drop_tys( self, key: impl IntoQueryParam<DefId>, ) -> Result<&'tcx List<Ty<'tcx>>, AlwaysRequiresDrop>
A list of types where the ADT requires drop if and only if any of
those types require drop. If the ADT is known to always need drop
then Err(AlwaysRequiresDrop)
is returned.
sourcepub fn adt_significant_drop_tys(
self,
key: impl IntoQueryParam<DefId>,
) -> Result<&'tcx List<Ty<'tcx>>, AlwaysRequiresDrop>
pub fn adt_significant_drop_tys( self, key: impl IntoQueryParam<DefId>, ) -> Result<&'tcx List<Ty<'tcx>>, AlwaysRequiresDrop>
A list of types where the ADT requires drop if and only if any of those types
has significant drop. A type marked with the attribute rustc_insignificant_dtor
is considered to not be significant. A drop is significant if it is implemented
by the user or does anything that will have any observable behavior (other than
freeing up memory). If the ADT is known to have a significant destructor then
Err(AlwaysRequiresDrop)
is returned.
sourcepub fn layout_of(
self,
key: ParamEnvAnd<'tcx, Ty<'tcx>>,
) -> Result<TyAndLayout<'tcx>, &'tcx LayoutError<'tcx>>
pub fn layout_of( self, key: ParamEnvAnd<'tcx, Ty<'tcx>>, ) -> Result<TyAndLayout<'tcx>, &'tcx LayoutError<'tcx>>
Computes the layout of a type. Note that this implicitly executes in “reveal all” mode, and will normalize the input type.
sourcepub fn fn_abi_of_fn_ptr(
self,
key: ParamEnvAnd<'tcx, (PolyFnSig<'tcx>, &'tcx List<Ty<'tcx>>)>,
) -> Result<&'tcx FnAbi<'tcx, Ty<'tcx>>, &'tcx FnAbiError<'tcx>>
pub fn fn_abi_of_fn_ptr( self, key: ParamEnvAnd<'tcx, (PolyFnSig<'tcx>, &'tcx List<Ty<'tcx>>)>, ) -> Result<&'tcx FnAbi<'tcx, Ty<'tcx>>, &'tcx FnAbiError<'tcx>>
Compute a FnAbi
suitable for indirect calls, i.e. to fn
pointers.
NB: this doesn’t handle virtual calls - those should use fn_abi_of_instance
instead, where the instance is an InstanceKind::Virtual
.
sourcepub fn fn_abi_of_instance(
self,
key: ParamEnvAnd<'tcx, (Instance<'tcx>, &'tcx List<Ty<'tcx>>)>,
) -> Result<&'tcx FnAbi<'tcx, Ty<'tcx>>, &'tcx FnAbiError<'tcx>>
pub fn fn_abi_of_instance( self, key: ParamEnvAnd<'tcx, (Instance<'tcx>, &'tcx List<Ty<'tcx>>)>, ) -> Result<&'tcx FnAbi<'tcx, Ty<'tcx>>, &'tcx FnAbiError<'tcx>>
Compute a FnAbi
suitable for declaring/defining an fn
instance, and for
direct calls to an fn
.
NB: that includes virtual calls, which are represented by “direct calls”
to an InstanceKind::Virtual
instance (of <dyn Trait as Trait>::fn
).
sourcepub fn dylib_dependency_formats(
self,
key: CrateNum,
) -> &'tcx [(CrateNum, LinkagePreference)]
pub fn dylib_dependency_formats( self, key: CrateNum, ) -> &'tcx [(CrateNum, LinkagePreference)]
[query description - consider adding a doc-comment!] getting dylib dependency formats of crate
sourcepub fn dependency_formats(self, key: ()) -> &'tcx Lrc<Dependencies>
pub fn dependency_formats(self, key: ()) -> &'tcx Lrc<Dependencies>
[query description - consider adding a doc-comment!] getting the linkage format of all dependencies
sourcepub fn is_compiler_builtins(self, key: CrateNum) -> bool
pub fn is_compiler_builtins(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking if the crate is_compiler_builtins
sourcepub fn has_global_allocator(self, key: CrateNum) -> bool
pub fn has_global_allocator(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking if the crate has_global_allocator
sourcepub fn has_alloc_error_handler(self, key: CrateNum) -> bool
pub fn has_alloc_error_handler(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking if the crate has_alloc_error_handler
sourcepub fn has_panic_handler(self, key: CrateNum) -> bool
pub fn has_panic_handler(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking if the crate has_panic_handler
sourcepub fn is_profiler_runtime(self, key: CrateNum) -> bool
pub fn is_profiler_runtime(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking if a crate is #![profiler_runtime]
sourcepub fn has_ffi_unwind_calls(self, key: impl IntoQueryParam<LocalDefId>) -> bool
pub fn has_ffi_unwind_calls(self, key: impl IntoQueryParam<LocalDefId>) -> bool
[query description - consider adding a doc-comment!] checking if tcx.def_path_str(key)
contains FFI-unwind calls
sourcepub fn required_panic_strategy(self, key: CrateNum) -> Option<PanicStrategy>
pub fn required_panic_strategy(self, key: CrateNum) -> Option<PanicStrategy>
[query description - consider adding a doc-comment!] getting a crate’s required panic strategy
sourcepub fn panic_in_drop_strategy(self, key: CrateNum) -> PanicStrategy
pub fn panic_in_drop_strategy(self, key: CrateNum) -> PanicStrategy
[query description - consider adding a doc-comment!] getting a crate’s configured panic-in-drop strategy
sourcepub fn is_no_builtins(self, key: CrateNum) -> bool
pub fn is_no_builtins(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] getting whether a crate has #![no_builtins]
sourcepub fn symbol_mangling_version(self, key: CrateNum) -> SymbolManglingVersion
pub fn symbol_mangling_version(self, key: CrateNum) -> SymbolManglingVersion
[query description - consider adding a doc-comment!] getting a crate’s symbol mangling version
sourcepub fn extern_crate(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<&'tcx ExternCrate>
pub fn extern_crate( self, key: impl IntoQueryParam<DefId>, ) -> Option<&'tcx ExternCrate>
[query description - consider adding a doc-comment!] getting crate’s ExternCrateData
sourcepub fn specialization_enabled_in(self, key: CrateNum) -> bool
pub fn specialization_enabled_in(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] checking whether the crate enabled specialization
/min_specialization
sourcepub fn specializes(self, key: (DefId, DefId)) -> bool
pub fn specializes(self, key: (DefId, DefId)) -> bool
[query description - consider adding a doc-comment!] computing whether impls specialize one another
sourcepub fn in_scope_traits_map(
self,
key: OwnerId,
) -> Option<&'tcx ItemLocalMap<Box<[TraitCandidate]>>>
pub fn in_scope_traits_map( self, key: OwnerId, ) -> Option<&'tcx ItemLocalMap<Box<[TraitCandidate]>>>
[query description - consider adding a doc-comment!] getting traits in scope at a block
sourcepub fn defaultness(self, key: impl IntoQueryParam<DefId>) -> Defaultness
pub fn defaultness(self, key: impl IntoQueryParam<DefId>) -> Defaultness
Returns whether the impl or associated function has the default
keyword.
sourcepub fn check_well_formed(self, key: OwnerId) -> Result<(), ErrorGuaranteed>
pub fn check_well_formed(self, key: OwnerId) -> Result<(), ErrorGuaranteed>
[query description - consider adding a doc-comment!] checking that tcx.def_path_str(key)
is well-formed
sourcepub fn reachable_non_generics(
self,
key: CrateNum,
) -> &'tcx DefIdMap<SymbolExportInfo>
pub fn reachable_non_generics( self, key: CrateNum, ) -> &'tcx DefIdMap<SymbolExportInfo>
[query description - consider adding a doc-comment!] looking up the exported symbols of a crate
sourcepub fn is_reachable_non_generic(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_reachable_non_generic(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] checking whether tcx.def_path_str(def_id)
is an exported symbol
sourcepub fn is_unreachable_local_definition(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> bool
pub fn is_unreachable_local_definition( self, key: impl IntoQueryParam<LocalDefId>, ) -> bool
[query description - consider adding a doc-comment!] checking whether tcx.def_path_str(def_id)
is reachable from outside the crate
sourcepub fn upstream_monomorphizations(
self,
key: (),
) -> &'tcx DefIdMap<UnordMap<GenericArgsRef<'tcx>, CrateNum>>
pub fn upstream_monomorphizations( self, key: (), ) -> &'tcx DefIdMap<UnordMap<GenericArgsRef<'tcx>, CrateNum>>
The entire set of monomorphizations the local crate can safely
link to because they are exported from upstream crates. Do
not depend on this directly, as its value changes anytime
a monomorphization gets added or removed in any upstream
crate. Instead use the narrower upstream_monomorphizations_for
,
upstream_drop_glue_for
, upstream_async_drop_glue_for
, or,
even better, Instance::upstream_monomorphization()
.
sourcepub fn upstream_monomorphizations_for(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<&'tcx UnordMap<GenericArgsRef<'tcx>, CrateNum>>
pub fn upstream_monomorphizations_for( self, key: impl IntoQueryParam<DefId>, ) -> Option<&'tcx UnordMap<GenericArgsRef<'tcx>, CrateNum>>
Returns the set of upstream monomorphizations available for the
generic function identified by the given def_id
. The query makes
sure to make a stable selection if the same monomorphization is
available in multiple upstream crates.
You likely want to call Instance::upstream_monomorphization()
instead of invoking this query directly.
sourcepub fn upstream_drop_glue_for(
self,
key: GenericArgsRef<'tcx>,
) -> Option<CrateNum>
pub fn upstream_drop_glue_for( self, key: GenericArgsRef<'tcx>, ) -> Option<CrateNum>
Returns the upstream crate that exports drop-glue for the given
type (args
is expected to be a single-item list containing the
type one wants drop-glue for).
This is a subset of upstream_monomorphizations_for
in order to
increase dep-tracking granularity. Otherwise adding or removing any
type with drop-glue in any upstream crate would invalidate all
functions calling drop-glue of an upstream type.
You likely want to call Instance::upstream_monomorphization()
instead of invoking this query directly.
NOTE: This query could easily be extended to also support other
common functions that have are large set of monomorphizations
(like Clone::clone
for example).
sourcepub fn upstream_async_drop_glue_for(
self,
key: GenericArgsRef<'tcx>,
) -> Option<CrateNum>
pub fn upstream_async_drop_glue_for( self, key: GenericArgsRef<'tcx>, ) -> Option<CrateNum>
Returns the upstream crate that exports async-drop-glue for
the given type (args
is expected to be a single-item list
containing the type one wants async-drop-glue for).
This is a subset of upstream_monomorphizations_for
in order
to increase dep-tracking granularity. Otherwise adding or
removing any type with async-drop-glue in any upstream crate
would invalidate all functions calling async-drop-glue of an
upstream type.
You likely want to call Instance::upstream_monomorphization()
instead of invoking this query directly.
NOTE: This query could easily be extended to also support other
common functions that have are large set of monomorphizations
(like Clone::clone
for example).
sourcepub fn foreign_modules(
self,
key: CrateNum,
) -> &'tcx FxIndexMap<DefId, ForeignModule>
pub fn foreign_modules( self, key: CrateNum, ) -> &'tcx FxIndexMap<DefId, ForeignModule>
Returns a list of all extern
blocks of a crate.
sourcepub fn clashing_extern_declarations(self, key: ())
pub fn clashing_extern_declarations(self, key: ())
Lint against extern fn
declarations having incompatible types.
sourcepub fn entry_fn(self, key: ()) -> Option<(DefId, EntryFnType)>
pub fn entry_fn(self, key: ()) -> Option<(DefId, EntryFnType)>
Identifies the entry-point (e.g., the main
function) for a given
crate, returning None
if there is no entry point (such as for library crates).
sourcepub fn proc_macro_decls_static(self, key: ()) -> Option<LocalDefId>
pub fn proc_macro_decls_static(self, key: ()) -> Option<LocalDefId>
Finds the rustc_proc_macro_decls
item of a crate.
sourcepub fn crate_hash(self, key: CrateNum) -> Svh
pub fn crate_hash(self, key: CrateNum) -> Svh
[query description - consider adding a doc-comment!] looking up the hash a crate
sourcepub fn crate_host_hash(self, key: CrateNum) -> Option<Svh>
pub fn crate_host_hash(self, key: CrateNum) -> Option<Svh>
Gets the hash for the host proc macro. Used to support -Z dual-proc-macro.
sourcepub fn extra_filename(self, key: CrateNum) -> &'tcx String
pub fn extra_filename(self, key: CrateNum) -> &'tcx String
Gets the extra data to put in each output filename for a crate.
For example, compiling the foo
crate with extra-filename=-a
creates a libfoo-b.rlib
file.
sourcepub fn crate_extern_paths(self, key: CrateNum) -> &'tcx Vec<PathBuf>
pub fn crate_extern_paths(self, key: CrateNum) -> &'tcx Vec<PathBuf>
Gets the paths where the crate came from in the file system.
sourcepub fn implementations_of_trait(
self,
key: (CrateNum, DefId),
) -> &'tcx [(DefId, Option<SimplifiedType>)]
pub fn implementations_of_trait( self, key: (CrateNum, DefId), ) -> &'tcx [(DefId, Option<SimplifiedType>)]
Given a crate and a trait, look up all impls of that trait in the crate.
Return (impl_id, self_ty)
.
sourcepub fn crate_incoherent_impls(
self,
key: (CrateNum, SimplifiedType),
) -> Result<&'tcx [DefId], ErrorGuaranteed>
pub fn crate_incoherent_impls( self, key: (CrateNum, SimplifiedType), ) -> Result<&'tcx [DefId], ErrorGuaranteed>
Collects all incoherent impls for the given crate and type.
Do not call this directly, but instead use the incoherent_impls
query.
This query is only used to get the data necessary for that query.
sourcepub fn native_library(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<&'tcx NativeLib>
pub fn native_library( self, key: impl IntoQueryParam<DefId>, ) -> Option<&'tcx NativeLib>
Get the corresponding native library from the native_libraries
query
sourcepub fn inherit_sig_for_delegation_item(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx [Ty<'tcx>]
pub fn inherit_sig_for_delegation_item( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx [Ty<'tcx>]
[query description - consider adding a doc-comment!] inheriting delegation signature
sourcepub fn resolve_bound_vars(self, key: OwnerId) -> &'tcx ResolveBoundVars
pub fn resolve_bound_vars(self, key: OwnerId) -> &'tcx ResolveBoundVars
Does lifetime resolution on items. Importantly, we can’t resolve
lifetimes directly on things like trait methods, because of trait params.
See rustc_resolve::late::lifetimes
for details.
sourcepub fn named_variable_map(
self,
key: OwnerId,
) -> Option<&'tcx FxIndexMap<ItemLocalId, ResolvedArg>>
pub fn named_variable_map( self, key: OwnerId, ) -> Option<&'tcx FxIndexMap<ItemLocalId, ResolvedArg>>
[query description - consider adding a doc-comment!] looking up a named region
sourcepub fn is_late_bound_map(
self,
key: OwnerId,
) -> Option<&'tcx FxIndexSet<ItemLocalId>>
pub fn is_late_bound_map( self, key: OwnerId, ) -> Option<&'tcx FxIndexSet<ItemLocalId>>
[query description - consider adding a doc-comment!] testing if a region is late bound
sourcepub fn object_lifetime_default(
self,
key: impl IntoQueryParam<DefId>,
) -> ObjectLifetimeDefault
pub fn object_lifetime_default( self, key: impl IntoQueryParam<DefId>, ) -> ObjectLifetimeDefault
For a given item’s generic parameter, gets the default lifetimes to be used
for each parameter if a trait object were to be passed for that parameter.
For example, for T
in struct Foo<'a, T>
, this would be 'static
.
For T
in struct Foo<'a, T: 'a>
, this would instead be 'a
.
This query will panic if passed something that is not a type parameter.
sourcepub fn late_bound_vars_map(
self,
key: OwnerId,
) -> Option<&'tcx FxIndexMap<ItemLocalId, Vec<BoundVariableKind>>>
pub fn late_bound_vars_map( self, key: OwnerId, ) -> Option<&'tcx FxIndexMap<ItemLocalId, Vec<BoundVariableKind>>>
[query description - consider adding a doc-comment!] looking up late bound vars
sourcepub fn visibility(self, key: impl IntoQueryParam<DefId>) -> Visibility<DefId>
pub fn visibility(self, key: impl IntoQueryParam<DefId>) -> Visibility<DefId>
Computes the visibility of the provided def_id
.
If the item from the def_id
doesn’t have a visibility, it will panic. For example
a generic type parameter will panic if you call this method on it:
use std::fmt::Debug;
pub trait Foo<T: Debug> {}
In here, if you call visibility
on T
, it’ll panic.
sourcepub fn inhabited_predicate_adt(
self,
key: impl IntoQueryParam<DefId>,
) -> InhabitedPredicate<'tcx>
pub fn inhabited_predicate_adt( self, key: impl IntoQueryParam<DefId>, ) -> InhabitedPredicate<'tcx>
[query description - consider adding a doc-comment!] computing the uninhabited predicate of {:?}
sourcepub fn inhabited_predicate_type(self, key: Ty<'tcx>) -> InhabitedPredicate<'tcx>
pub fn inhabited_predicate_type(self, key: Ty<'tcx>) -> InhabitedPredicate<'tcx>
Do not call this query directly: invoke Ty::inhabited_predicate
instead.
sourcepub fn dep_kind(self, key: CrateNum) -> CrateDepKind
pub fn dep_kind(self, key: CrateNum) -> CrateDepKind
[query description - consider adding a doc-comment!] fetching what a dependency looks like
sourcepub fn crate_name(self, key: CrateNum) -> Symbol
pub fn crate_name(self, key: CrateNum) -> Symbol
Gets the name of the crate.
sourcepub fn module_children(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [ModChild]
pub fn module_children( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [ModChild]
[query description - consider adding a doc-comment!] collecting child items of module tcx.def_path_str(def_id)
sourcepub fn extern_mod_stmt_cnum(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> Option<CrateNum>
pub fn extern_mod_stmt_cnum( self, key: impl IntoQueryParam<LocalDefId>, ) -> Option<CrateNum>
[query description - consider adding a doc-comment!] computing crate imported by tcx.def_path_str(def_id)
sourcepub fn lib_features(self, key: CrateNum) -> &'tcx LibFeatures
pub fn lib_features(self, key: CrateNum) -> &'tcx LibFeatures
[query description - consider adding a doc-comment!] calculating the lib features defined in a crate
sourcepub fn stability_implications(
self,
key: CrateNum,
) -> &'tcx UnordMap<Symbol, Symbol>
pub fn stability_implications( self, key: CrateNum, ) -> &'tcx UnordMap<Symbol, Symbol>
[query description - consider adding a doc-comment!] calculating the implications between #[unstable]
features defined in a crate
sourcepub fn intrinsic_raw(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<IntrinsicDef>
pub fn intrinsic_raw( self, key: impl IntoQueryParam<DefId>, ) -> Option<IntrinsicDef>
Whether the function is an intrinsic
sourcepub fn get_lang_items(self, key: ()) -> &'tcx LanguageItems
pub fn get_lang_items(self, key: ()) -> &'tcx LanguageItems
Returns the lang items defined in another crate by loading it from metadata.
sourcepub fn all_diagnostic_items(self, key: ()) -> &'tcx DiagnosticItems
pub fn all_diagnostic_items(self, key: ()) -> &'tcx DiagnosticItems
Returns all diagnostic items defined in all crates.
sourcepub fn defined_lang_items(self, key: CrateNum) -> &'tcx [(DefId, LangItem)]
pub fn defined_lang_items(self, key: CrateNum) -> &'tcx [(DefId, LangItem)]
Returns the lang items defined in another crate by loading it from metadata.
sourcepub fn diagnostic_items(self, key: CrateNum) -> &'tcx DiagnosticItems
pub fn diagnostic_items(self, key: CrateNum) -> &'tcx DiagnosticItems
Returns the diagnostic items defined in a crate.
sourcepub fn missing_lang_items(self, key: CrateNum) -> &'tcx [LangItem]
pub fn missing_lang_items(self, key: CrateNum) -> &'tcx [LangItem]
[query description - consider adding a doc-comment!] calculating the missing lang items in a crate
sourcepub fn visible_parent_map(self, key: ()) -> &'tcx DefIdMap<DefId>
pub fn visible_parent_map(self, key: ()) -> &'tcx DefIdMap<DefId>
The visible parent map is a map from every item to a visible parent. It prefers the shortest visible path to an item. Used for diagnostics, for example path trimming. The parents are modules, enums or traits.
sourcepub fn trimmed_def_paths(self, key: ()) -> &'tcx DefIdMap<Symbol>
pub fn trimmed_def_paths(self, key: ()) -> &'tcx DefIdMap<Symbol>
Collects the “trimmed”, shortest accessible paths to all items for diagnostics. See the provider docs for more info.
sourcepub fn missing_extern_crate_item(self, key: CrateNum) -> bool
pub fn missing_extern_crate_item(self, key: CrateNum) -> bool
[query description - consider adding a doc-comment!] seeing if we’re missing an extern crate
item for this crate
sourcepub fn used_crate_source(self, key: CrateNum) -> &'tcx Lrc<CrateSource>
pub fn used_crate_source(self, key: CrateNum) -> &'tcx Lrc<CrateSource>
[query description - consider adding a doc-comment!] looking at the source for a crate
sourcepub fn debugger_visualizers(
self,
key: CrateNum,
) -> &'tcx Vec<DebuggerVisualizerFile>
pub fn debugger_visualizers( self, key: CrateNum, ) -> &'tcx Vec<DebuggerVisualizerFile>
Returns the debugger visualizers defined for this crate.
NOTE: This query has to be marked eval_always
because it reads data
directly from disk that is not tracked anywhere else. I.e. it
represents a genuine input to the query system.
sourcepub fn postorder_cnums(self, key: ()) -> &'tcx [CrateNum]
pub fn postorder_cnums(self, key: ()) -> &'tcx [CrateNum]
[query description - consider adding a doc-comment!] generating a postorder list of CrateNums
sourcepub fn is_private_dep(self, key: CrateNum) -> bool
pub fn is_private_dep(self, key: CrateNum) -> bool
Returns whether or not the crate with CrateNum ‘cnum’ is marked as a private dependency
sourcepub fn allocator_kind(self, key: ()) -> Option<AllocatorKind>
pub fn allocator_kind(self, key: ()) -> Option<AllocatorKind>
[query description - consider adding a doc-comment!] getting the allocator kind for the current crate
sourcepub fn alloc_error_handler_kind(self, key: ()) -> Option<AllocatorKind>
pub fn alloc_error_handler_kind(self, key: ()) -> Option<AllocatorKind>
[query description - consider adding a doc-comment!] alloc error handler kind for the current crate
sourcepub fn upvars_mentioned(
self,
key: impl IntoQueryParam<DefId>,
) -> Option<&'tcx FxIndexMap<HirId, Upvar>>
pub fn upvars_mentioned( self, key: impl IntoQueryParam<DefId>, ) -> Option<&'tcx FxIndexMap<HirId, Upvar>>
[query description - consider adding a doc-comment!] collecting upvars mentioned in tcx.def_path_str(def_id)
sourcepub fn maybe_unused_trait_imports(self, key: ()) -> &'tcx FxIndexSet<LocalDefId>
pub fn maybe_unused_trait_imports(self, key: ()) -> &'tcx FxIndexSet<LocalDefId>
[query description - consider adding a doc-comment!] fetching potentially unused trait imports
sourcepub fn names_imported_by_glob_use(
self,
key: impl IntoQueryParam<LocalDefId>,
) -> &'tcx UnordSet<Symbol>
pub fn names_imported_by_glob_use( self, key: impl IntoQueryParam<LocalDefId>, ) -> &'tcx UnordSet<Symbol>
[query description - consider adding a doc-comment!] finding names imported by glob use for tcx.def_path_str(def_id)
sourcepub fn stability_index(self, key: ()) -> &'tcx Index
pub fn stability_index(self, key: ()) -> &'tcx Index
[query description - consider adding a doc-comment!] calculating the stability index for the local crate
sourcepub fn crates(self, key: ()) -> &'tcx [CrateNum]
pub fn crates(self, key: ()) -> &'tcx [CrateNum]
[query description - consider adding a doc-comment!] fetching all foreign CrateNum instances
sourcepub fn used_crates(self, key: ()) -> &'tcx [CrateNum]
pub fn used_crates(self, key: ()) -> &'tcx [CrateNum]
[query description - consider adding a doc-comment!] fetching CrateNum
s for all crates loaded non-speculatively
sourcepub fn traits(self, key: CrateNum) -> &'tcx [DefId]
pub fn traits(self, key: CrateNum) -> &'tcx [DefId]
A list of all traits in a crate, used by rustdoc and error reporting.
sourcepub fn trait_impls_in_crate(self, key: CrateNum) -> &'tcx [DefId]
pub fn trait_impls_in_crate(self, key: CrateNum) -> &'tcx [DefId]
[query description - consider adding a doc-comment!] fetching all trait impls in a crate
sourcepub fn exported_symbols(
self,
key: CrateNum,
) -> &'tcx [(ExportedSymbol<'tcx>, SymbolExportInfo)]
pub fn exported_symbols( self, key: CrateNum, ) -> &'tcx [(ExportedSymbol<'tcx>, SymbolExportInfo)]
The list of symbols exported from the given crate.
- All names contained in
exported_symbols(cnum)
are guaranteed to correspond to a publicly visible symbol incnum
machine code. - The
exported_symbols
sets of different crates do not intersect.
sourcepub fn collect_and_partition_mono_items(
self,
key: (),
) -> (&'tcx DefIdSet, &'tcx [CodegenUnit<'tcx>])
pub fn collect_and_partition_mono_items( self, key: (), ) -> (&'tcx DefIdSet, &'tcx [CodegenUnit<'tcx>])
[query description - consider adding a doc-comment!] collect_and_partition_mono_items
sourcepub fn is_codegened_item(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn is_codegened_item(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] determining whether tcx.def_path_str(def_id)
needs codegen
sourcepub fn codegen_unit(self, key: Symbol) -> &'tcx CodegenUnit<'tcx>
pub fn codegen_unit(self, key: Symbol) -> &'tcx CodegenUnit<'tcx>
[query description - consider adding a doc-comment!] getting codegen unit {sym}
sourcepub fn unused_generic_params(
self,
key: InstanceKind<'tcx>,
) -> UnusedGenericParams
pub fn unused_generic_params( self, key: InstanceKind<'tcx>, ) -> UnusedGenericParams
[query description - consider adding a doc-comment!] determining which generic parameters are unused by tcx.def_path_str(key.def_id())
sourcepub fn backend_optimization_level(self, key: ()) -> OptLevel
pub fn backend_optimization_level(self, key: ()) -> OptLevel
[query description - consider adding a doc-comment!] optimization level used by backend
sourcepub fn output_filenames(self, key: ()) -> &'tcx Arc<OutputFilenames>
pub fn output_filenames(self, key: ()) -> &'tcx Arc<OutputFilenames>
Return the filenames where output artefacts shall be stored.
This query returns an &Arc
because codegen backends need the value even after the TyCtxt
has been destroyed.
sourcepub fn normalize_canonicalized_projection_ty(
self,
key: CanonicalAliasGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, NormalizationResult<'tcx>>>, NoSolution>
pub fn normalize_canonicalized_projection_ty( self, key: CanonicalAliasGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, NormalizationResult<'tcx>>>, NoSolution>
Do not call this query directly: Invoke normalize
instead.
sourcepub fn normalize_canonicalized_weak_ty(
self,
key: CanonicalAliasGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, NormalizationResult<'tcx>>>, NoSolution>
pub fn normalize_canonicalized_weak_ty( self, key: CanonicalAliasGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, NormalizationResult<'tcx>>>, NoSolution>
Do not call this query directly: Invoke normalize
instead.
sourcepub fn normalize_canonicalized_inherent_projection_ty(
self,
key: CanonicalAliasGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, NormalizationResult<'tcx>>>, NoSolution>
pub fn normalize_canonicalized_inherent_projection_ty( self, key: CanonicalAliasGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, NormalizationResult<'tcx>>>, NoSolution>
Do not call this query directly: Invoke normalize
instead.
sourcepub fn try_normalize_generic_arg_after_erasing_regions(
self,
key: ParamEnvAnd<'tcx, GenericArg<'tcx>>,
) -> Result<GenericArg<'tcx>, NoSolution>
pub fn try_normalize_generic_arg_after_erasing_regions( self, key: ParamEnvAnd<'tcx, GenericArg<'tcx>>, ) -> Result<GenericArg<'tcx>, NoSolution>
Do not call this query directly: invoke try_normalize_erasing_regions
instead.
sourcepub fn implied_outlives_bounds_compat(
self,
key: CanonicalTyGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>, NoSolution>
pub fn implied_outlives_bounds_compat( self, key: CanonicalTyGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>, NoSolution>
[query description - consider adding a doc-comment!] computing implied outlives bounds for goal.value.value
sourcepub fn implied_outlives_bounds(
self,
key: CanonicalTyGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>, NoSolution>
pub fn implied_outlives_bounds( self, key: CanonicalTyGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>, NoSolution>
[query description - consider adding a doc-comment!] computing implied outlives bounds v2 for goal.value.value
sourcepub fn dropck_outlives(
self,
key: CanonicalTyGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, DropckOutlivesResult<'tcx>>>, NoSolution>
pub fn dropck_outlives( self, key: CanonicalTyGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, DropckOutlivesResult<'tcx>>>, NoSolution>
Do not call this query directly:
invoke DropckOutlives::new(dropped_ty)).fully_perform(typeck.infcx)
instead.
sourcepub fn evaluate_obligation(
self,
key: CanonicalPredicateGoal<'tcx>,
) -> Result<EvaluationResult, OverflowError>
pub fn evaluate_obligation( self, key: CanonicalPredicateGoal<'tcx>, ) -> Result<EvaluationResult, OverflowError>
Do not call this query directly: invoke infcx.predicate_may_hold()
or
infcx.predicate_must_hold()
instead.
sourcepub fn type_op_ascribe_user_type(
self,
key: CanonicalTypeOpAscribeUserTypeGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
pub fn type_op_ascribe_user_type( self, key: CanonicalTypeOpAscribeUserTypeGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
Do not call this query directly: part of the Eq
type-op
sourcepub fn type_op_eq(
self,
key: CanonicalTypeOpEqGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
pub fn type_op_eq( self, key: CanonicalTypeOpEqGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
Do not call this query directly: part of the Eq
type-op
sourcepub fn type_op_subtype(
self,
key: CanonicalTypeOpSubtypeGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
pub fn type_op_subtype( self, key: CanonicalTypeOpSubtypeGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
Do not call this query directly: part of the Subtype
type-op
sourcepub fn type_op_prove_predicate(
self,
key: CanonicalTypeOpProvePredicateGoal<'tcx>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
pub fn type_op_prove_predicate( self, key: CanonicalTypeOpProvePredicateGoal<'tcx>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution>
Do not call this query directly: part of the ProvePredicate
type-op
sourcepub fn type_op_normalize_ty(
self,
key: CanonicalTypeOpNormalizeGoal<'tcx, Ty<'tcx>>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Ty<'tcx>>>, NoSolution>
pub fn type_op_normalize_ty( self, key: CanonicalTypeOpNormalizeGoal<'tcx, Ty<'tcx>>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Ty<'tcx>>>, NoSolution>
Do not call this query directly: part of the Normalize
type-op
sourcepub fn type_op_normalize_clause(
self,
key: CanonicalTypeOpNormalizeGoal<'tcx, Clause<'tcx>>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Clause<'tcx>>>, NoSolution>
pub fn type_op_normalize_clause( self, key: CanonicalTypeOpNormalizeGoal<'tcx, Clause<'tcx>>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, Clause<'tcx>>>, NoSolution>
Do not call this query directly: part of the Normalize
type-op
sourcepub fn type_op_normalize_poly_fn_sig(
self,
key: CanonicalTypeOpNormalizeGoal<'tcx, PolyFnSig<'tcx>>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, PolyFnSig<'tcx>>>, NoSolution>
pub fn type_op_normalize_poly_fn_sig( self, key: CanonicalTypeOpNormalizeGoal<'tcx, PolyFnSig<'tcx>>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, PolyFnSig<'tcx>>>, NoSolution>
Do not call this query directly: part of the Normalize
type-op
sourcepub fn type_op_normalize_fn_sig(
self,
key: CanonicalTypeOpNormalizeGoal<'tcx, FnSig<'tcx>>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, FnSig<'tcx>>>, NoSolution>
pub fn type_op_normalize_fn_sig( self, key: CanonicalTypeOpNormalizeGoal<'tcx, FnSig<'tcx>>, ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, FnSig<'tcx>>>, NoSolution>
Do not call this query directly: part of the Normalize
type-op
sourcepub fn instantiate_and_check_impossible_predicates(
self,
key: (DefId, GenericArgsRef<'tcx>),
) -> bool
pub fn instantiate_and_check_impossible_predicates( self, key: (DefId, GenericArgsRef<'tcx>), ) -> bool
[query description - consider adding a doc-comment!] checking impossible instantiated predicates: tcx.def_path_str(key.0)
sourcepub fn is_impossible_associated_item(self, key: (DefId, DefId)) -> bool
pub fn is_impossible_associated_item(self, key: (DefId, DefId)) -> bool
[query description - consider adding a doc-comment!] checking if tcx.def_path_str(key.1)
is impossible to reference within tcx.def_path_str(key.0)
sourcepub fn method_autoderef_steps(
self,
key: CanonicalTyGoal<'tcx>,
) -> MethodAutoderefStepsResult<'tcx>
pub fn method_autoderef_steps( self, key: CanonicalTyGoal<'tcx>, ) -> MethodAutoderefStepsResult<'tcx>
[query description - consider adding a doc-comment!] computing autoderef types for goal.value.value
sourcepub fn supported_target_features(
self,
key: CrateNum,
) -> &'tcx UnordMap<String, Option<Symbol>>
pub fn supported_target_features( self, key: CrateNum, ) -> &'tcx UnordMap<String, Option<Symbol>>
[query description - consider adding a doc-comment!] looking up supported target features
sourcepub fn implied_target_features(self, key: Symbol) -> &'tcx Vec<Symbol>
pub fn implied_target_features(self, key: Symbol) -> &'tcx Vec<Symbol>
[query description - consider adding a doc-comment!] looking up implied target features
sourcepub fn features_query(self, key: ()) -> &'tcx Features
pub fn features_query(self, key: ()) -> &'tcx Features
[query description - consider adding a doc-comment!] looking up enabled feature gates
sourcepub fn crate_for_resolver(self, key: ()) -> &'tcx Steal<(Crate, AttrVec)>
pub fn crate_for_resolver(self, key: ()) -> &'tcx Steal<(Crate, AttrVec)>
[query description - consider adding a doc-comment!] the ast before macro expansion and name resolution
sourcepub fn resolve_instance_raw(
self,
key: ParamEnvAnd<'tcx, (DefId, GenericArgsRef<'tcx>)>,
) -> Result<Option<Instance<'tcx>>, ErrorGuaranteed>
pub fn resolve_instance_raw( self, key: ParamEnvAnd<'tcx, (DefId, GenericArgsRef<'tcx>)>, ) -> Result<Option<Instance<'tcx>>, ErrorGuaranteed>
Attempt to resolve the given DefId
to an Instance
, for the
given generics args (GenericArgsRef
), returning one of:
Ok(Some(instance))
on successOk(None)
when theGenericArgsRef
are still too generic, and therefore don’t allow finding the finalInstance
Err(ErrorGuaranteed)
when theInstance
resolution process couldn’t complete due to errors elsewhere - this is distinct fromOk(None)
to avoid misleading diagnostics when an error has already been/will be emitted, for the original cause.
sourcepub fn reveal_opaque_types_in_bounds(self, key: Clauses<'tcx>) -> Clauses<'tcx>
pub fn reveal_opaque_types_in_bounds(self, key: Clauses<'tcx>) -> Clauses<'tcx>
[query description - consider adding a doc-comment!] revealing opaque types in {:?}
sourcepub fn limits(self, key: ()) -> Limits
pub fn limits(self, key: ()) -> Limits
[query description - consider adding a doc-comment!] looking up limits
sourcepub fn diagnostic_hir_wf_check(
self,
key: (Predicate<'tcx>, WellFormedLoc),
) -> &'tcx Option<ObligationCause<'tcx>>
pub fn diagnostic_hir_wf_check( self, key: (Predicate<'tcx>, WellFormedLoc), ) -> &'tcx Option<ObligationCause<'tcx>>
Performs an HIR-based well-formed check on the item with the given HirId
. If
we get an Unimplemented
error that matches the provided Predicate
, return
the cause of the newly created obligation.
This is only used by error-reporting code to get a better cause (in particular, a better
span) for an existing error. Therefore, it is best-effort, and may never handle
all of the cases that the normal ty::Ty
-based wfcheck does. This is fine,
because the ty::Ty
-based wfcheck is always run.
sourcepub fn global_backend_features(self, key: ()) -> &'tcx Vec<String>
pub fn global_backend_features(self, key: ()) -> &'tcx Vec<String>
The list of backend features computed from CLI flags (-Ctarget-cpu
, -Ctarget-feature
,
--target
and similar).
sourcepub fn check_validity_requirement(
self,
key: (ValidityRequirement, ParamEnvAnd<'tcx, Ty<'tcx>>),
) -> Result<bool, &'tcx LayoutError<'tcx>>
pub fn check_validity_requirement( self, key: (ValidityRequirement, ParamEnvAnd<'tcx, Ty<'tcx>>), ) -> Result<bool, &'tcx LayoutError<'tcx>>
[query description - consider adding a doc-comment!] checking validity requirement for key.1.value
: key.0
sourcepub fn compare_impl_const(
self,
key: (LocalDefId, DefId),
) -> Result<(), ErrorGuaranteed>
pub fn compare_impl_const( self, key: (LocalDefId, DefId), ) -> Result<(), ErrorGuaranteed>
[query description - consider adding a doc-comment!] checking assoc const tcx.def_path_str(key.0)
has the same type as trait item
sourcepub fn deduced_param_attrs(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [DeducedParamAttrs]
pub fn deduced_param_attrs( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [DeducedParamAttrs]
[query description - consider adding a doc-comment!] deducing parameter attributes for tcx.def_path_str(def_id)
sourcepub fn doc_link_resolutions(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx DocLinkResMap
pub fn doc_link_resolutions( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx DocLinkResMap
[query description - consider adding a doc-comment!] resolutions for documentation links for a module
sourcepub fn doc_link_traits_in_scope(
self,
key: impl IntoQueryParam<DefId>,
) -> &'tcx [DefId]
pub fn doc_link_traits_in_scope( self, key: impl IntoQueryParam<DefId>, ) -> &'tcx [DefId]
[query description - consider adding a doc-comment!] traits in scope for documentation links for a module
sourcepub fn stripped_cfg_items(self, key: CrateNum) -> &'tcx [StrippedCfgItem]
pub fn stripped_cfg_items(self, key: CrateNum) -> &'tcx [StrippedCfgItem]
Get all item paths that were stripped by a #[cfg]
in a particular crate.
Should not be called for the local crate before the resolver outputs are created, as it
is only fed there.
sourcepub fn generics_require_sized_self(
self,
key: impl IntoQueryParam<DefId>,
) -> bool
pub fn generics_require_sized_self( self, key: impl IntoQueryParam<DefId>, ) -> bool
[query description - consider adding a doc-comment!] check whether the item has a where Self: Sized
bound
sourcepub fn cross_crate_inlinable(self, key: impl IntoQueryParam<DefId>) -> bool
pub fn cross_crate_inlinable(self, key: impl IntoQueryParam<DefId>) -> bool
[query description - consider adding a doc-comment!] whether the item should be made inlinable across crates
Methods from Deref<Target = &'tcx GlobalCtxt<'tcx>>§
sourcepub fn enter<F, R>(&'tcx self, f: F) -> R
pub fn enter<F, R>(&'tcx self, f: F) -> R
Installs self
in a TyCtxt
and ImplicitCtxt
for the duration of
f
.
pub fn finish(&self) -> FileEncodeResult
Trait Implementations§
source§impl<'tcx> AdtDef<TyCtxt<'tcx>> for AdtDef<'tcx>
impl<'tcx> AdtDef<TyCtxt<'tcx>> for AdtDef<'tcx>
fn def_id(self) -> DefId
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source§fn struct_tail_ty(
self,
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) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>
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fn is_phantom_data(self) -> bool
fn all_field_tys( self, tcx: TyCtxt<'tcx>, ) -> EarlyBinder<'tcx, impl IntoIterator<Item = Ty<'tcx>>>
fn sized_constraint( self, tcx: TyCtxt<'tcx>, ) -> Option<EarlyBinder<'tcx, Ty<'tcx>>>
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source§impl<'tcx> BoundExistentialPredicates<TyCtxt<'tcx>> for &'tcx List<PolyExistentialPredicate<'tcx>>
impl<'tcx> BoundExistentialPredicates<TyCtxt<'tcx>> for &'tcx List<PolyExistentialPredicate<'tcx>>
fn principal_def_id(self) -> Option<DefId>
fn principal(self) -> Option<PolyExistentialTraitRef<'tcx>>
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fn projection_bounds( self, ) -> impl IntoIterator<Item = Binder<'tcx, ExistentialProjection<'tcx>>>
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impl<'tcx> BoundVarLike<TyCtxt<'tcx>> for BoundRegion
source§impl<'tcx> BoundVarLike<TyCtxt<'tcx>> for BoundTy
impl<'tcx> BoundVarLike<TyCtxt<'tcx>> for BoundTy
source§impl<'tcx> Clause<TyCtxt<'tcx>> for Clause<'tcx>
impl<'tcx> Clause<TyCtxt<'tcx>> for Clause<'tcx>
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self,
tcx: TyCtxt<'tcx>,
trait_ref: PolyTraitRef<'tcx>,
) -> Self
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source§impl<'tcx> Const<TyCtxt<'tcx>> for Const<'tcx>
impl<'tcx> Const<TyCtxt<'tcx>> for Const<'tcx>
fn try_to_target_usize(self, interner: TyCtxt<'tcx>) -> Option<u64>
fn new_infer(tcx: TyCtxt<'tcx>, infer: InferConst) -> Self
fn new_var(tcx: TyCtxt<'tcx>, vid: ConstVid) -> Self
fn new_bound( interner: TyCtxt<'tcx>, debruijn: DebruijnIndex, var: BoundVar, ) -> Self
fn new_anon_bound( tcx: TyCtxt<'tcx>, debruijn: DebruijnIndex, var: BoundVar, ) -> Self
fn new_unevaluated(interner: TyCtxt<'tcx>, uv: UnevaluatedConst<'tcx>) -> Self
fn new_expr(interner: TyCtxt<'tcx>, expr: Expr<'tcx>) -> Self
fn new_error(interner: TyCtxt<'tcx>, guar: ErrorGuaranteed) -> Self
fn new_error_with_message(interner: I, msg: impl ToString) -> Self
fn is_ct_var(self) -> bool
source§impl<'tcx> DepContext for TyCtxt<'tcx>
impl<'tcx> DepContext for TyCtxt<'tcx>
type Deps = DepsType
source§fn with_stable_hashing_context<R>(
self,
f: impl FnOnce(StableHashingContext<'_>) -> R,
) -> R
fn with_stable_hashing_context<R>( self, f: impl FnOnce(StableHashingContext<'_>) -> R, ) -> R
source§fn profiler(&self) -> &SelfProfilerRef
fn profiler(&self) -> &SelfProfilerRef
fn dep_kind_info(&self, dk: DepKind) -> &DepKindStruct<'tcx>
fn fingerprint_style(self, kind: DepKind) -> FingerprintStyle
source§fn is_eval_always(self, kind: DepKind) -> bool
fn is_eval_always(self, kind: DepKind) -> bool
source§fn try_force_from_dep_node(
self,
dep_node: DepNode,
frame: Option<&MarkFrame<'_>>,
) -> bool
fn try_force_from_dep_node( self, dep_node: DepNode, frame: Option<&MarkFrame<'_>>, ) -> bool
source§fn try_load_from_on_disk_cache(self, dep_node: DepNode)
fn try_load_from_on_disk_cache(self, dep_node: DepNode)
source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for ()
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for ()
fn fingerprint_style() -> FingerprintStyle
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fn recover(_: TyCtxt<'tcx>, _: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.fn to_debug_str(&self, _: Tcx) -> String
source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for (DefId, DefId)
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for (DefId, DefId)
fn fingerprint_style() -> FingerprintStyle
source§fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint
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source§fn recover(tcx: Tcx, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: Tcx, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for CrateNum
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for CrateNum
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source§fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for DefId
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for DefId
fn fingerprint_style() -> FingerprintStyle
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source§fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for HirId
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for HirId
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source§fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for LocalDefId
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for LocalDefId
fn fingerprint_style() -> FingerprintStyle
source§fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint
fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint
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source§fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
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impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for LocalModDefId
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source§fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint
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source§fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for ModDefId
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for ModDefId
fn fingerprint_style() -> FingerprintStyle
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source§fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for OwnerId
impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for OwnerId
fn fingerprint_style() -> FingerprintStyle
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fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.