struct StatCollector<'k> {
krate: Option<Map<'k>>,
nodes: FxHashMap<&'static str, Node>,
seen: FxHashSet<HirId>,
}
Expand description
This type measures the size of AST and HIR nodes, by implementing the AST
and HIR Visitor
traits. But we don’t measure every visited type because
that could cause double counting.
For example, ast::Visitor
has visit_ident
, but Ident
s are always
stored inline within other AST nodes, so we don’t implement visit_ident
here. In contrast, we do implement visit_expr
because ast::Expr
is
always stored as P<ast::Expr>
, and every such expression should be
measured separately.
In general, a visit_foo
method should be implemented here if the
corresponding Foo
type is always stored on its own, e.g.: P<Foo>
,
Box<Foo>
, Vec<Foo>
, Box<[Foo]>
.
There are some types in the AST and HIR tree that the visitors do not have
a visit_*
method for, and so we cannot measure these, which is
unfortunate.
Fields§
§krate: Option<Map<'k>>
§nodes: FxHashMap<&'static str, Node>
§seen: FxHashSet<HirId>
Implementations§
Source§impl<'k> StatCollector<'k>
impl<'k> StatCollector<'k>
fn record<T>(&mut self, label: &'static str, id: Option<HirId>, val: &T)
fn record_variant<T>( &mut self, label1: &'static str, label2: &'static str, id: Option<HirId>, val: &T, )
fn record_inner<T>( &mut self, label1: &'static str, label2: Option<&'static str>, id: Option<HirId>, val: &T, )
fn print(&self, title: &str, prefix: &str)
Trait Implementations§
Source§impl<'v> Visitor<'v> for StatCollector<'v>
impl<'v> Visitor<'v> for StatCollector<'v>
fn visit_param(&mut self, param: &'v Param<'v>)
Source§fn visit_nested_item(&mut self, id: ItemId)
fn visit_nested_item(&mut self, id: ItemId)
Self::NestedFilter
is nested_filter::None
, this method does
nothing. You probably don’t want to override this method –
instead, override Self::NestedFilter
or use the “shallow” or
“deep” visit patterns described at
rustc_hir::intravisit
. The only reason to override
this method is if you want a nested pattern but cannot supply a
Map
; see nested_visit_map
for advice.Source§fn visit_nested_trait_item(&mut self, trait_item_id: TraitItemId)
fn visit_nested_trait_item(&mut self, trait_item_id: TraitItemId)
visit_nested_item()
, but for trait items. See
visit_nested_item()
for advice on when to override this
method.Source§fn visit_nested_impl_item(&mut self, impl_item_id: ImplItemId)
fn visit_nested_impl_item(&mut self, impl_item_id: ImplItemId)
visit_nested_item()
, but for impl items. See
visit_nested_item()
for advice on when to override this
method.Source§fn visit_nested_foreign_item(&mut self, id: ForeignItemId)
fn visit_nested_foreign_item(&mut self, id: ForeignItemId)
visit_nested_item()
, but for foreign items. See
visit_nested_item()
for advice on when to override this
method.Source§fn visit_nested_body(&mut self, body_id: BodyId)
fn visit_nested_body(&mut self, body_id: BodyId)
visit_nested_item
, does nothing by default unless you override
Self::NestedFilter
.Source§fn visit_item(&mut self, i: &'v Item<'v>)
fn visit_item(&mut self, i: &'v Item<'v>)
visit_nested_item
for details.fn visit_body(&mut self, b: &Body<'v>)
fn visit_mod(&mut self, m: &'v Mod<'v>, _s: Span, n: HirId)
fn visit_foreign_item(&mut self, i: &'v ForeignItem<'v>)
fn visit_local(&mut self, l: &'v LetStmt<'v>)
fn visit_block(&mut self, b: &'v Block<'v>)
fn visit_stmt(&mut self, s: &'v Stmt<'v>)
fn visit_arm(&mut self, a: &'v Arm<'v>)
fn visit_pat(&mut self, p: &'v Pat<'v>)
fn visit_pat_field(&mut self, f: &'v PatField<'v>)
fn visit_expr(&mut self, e: &'v Expr<'v>)
fn visit_expr_field(&mut self, f: &'v ExprField<'v>)
fn visit_ty(&mut self, t: &'v Ty<'v>)
fn visit_generic_param(&mut self, p: &'v GenericParam<'v>)
fn visit_generics(&mut self, g: &'v Generics<'v>)
fn visit_where_predicate(&mut self, p: &'v WherePredicate<'v>)
fn visit_fn( &mut self, fk: FnKind<'v>, fd: &'v FnDecl<'v>, b: BodyId, _: Span, id: LocalDefId, )
fn visit_use(&mut self, p: &'v UsePath<'v>, hir_id: HirId)
fn visit_trait_item(&mut self, ti: &'v TraitItem<'v>)
fn visit_trait_item_ref(&mut self, ti: &'v TraitItemRef)
fn visit_impl_item(&mut self, ii: &'v ImplItem<'v>)
fn visit_foreign_item_ref(&mut self, fi: &'v ForeignItemRef)
fn visit_impl_item_ref(&mut self, ii: &'v ImplItemRef)
fn visit_param_bound(&mut self, b: &'v GenericBound<'v>)
fn visit_field_def(&mut self, s: &'v FieldDef<'v>)
fn visit_variant(&mut self, v: &'v Variant<'v>)
fn visit_generic_arg(&mut self, ga: &'v GenericArg<'v>)
fn visit_lifetime(&mut self, lifetime: &'v Lifetime)
fn visit_path(&mut self, path: &Path<'v>, _id: HirId)
fn visit_path_segment(&mut self, path_segment: &'v PathSegment<'v>)
fn visit_generic_args(&mut self, ga: &'v GenericArgs<'v>)
fn visit_assoc_item_constraint( &mut self, constraint: &'v AssocItemConstraint<'v>, )
fn visit_attribute(&mut self, attr: &'v Attribute)
fn visit_inline_asm(&mut self, asm: &'v InlineAsm<'v>, id: HirId)
type Map = <Self::NestedFilter as NestedFilter<'v>>::Map
Source§type NestedFilter = None
type NestedFilter = None
NestedFilter
for details. If you override this type, you
must also override nested_visit_map
. Read moreSource§fn nested_visit_map(&mut self) -> Self::Map
fn nested_visit_map(&mut self) -> Self::Map
type NestedFilter
is set to visit nested items, this method
must also be overridden to provide a map to retrieve nested items.fn visit_id(&mut self, _hir_id: HirId) -> Self::Result
fn visit_name(&mut self, _name: Symbol) -> Self::Result
fn visit_ident(&mut self, ident: Ident) -> Self::Result
fn visit_array_length(&mut self, len: &'v ArrayLen<'v>) -> Self::Result
fn visit_anon_const(&mut self, c: &'v AnonConst) -> Self::Result
fn visit_inline_const(&mut self, c: &'v ConstBlock) -> Self::Result
fn visit_const_arg(&mut self, c: &'v ConstArg<'v>) -> Self::Result
fn visit_pattern_type_pattern(&mut self, _p: &'v Pat<'v>)
fn visit_const_param_default( &mut self, _param: HirId, ct: &'v ConstArg<'v>, ) -> Self::Result
fn visit_fn_ret_ty(&mut self, ret_ty: &'v FnRetTy<'v>) -> Self::Result
fn visit_fn_decl(&mut self, fd: &'v FnDecl<'v>) -> Self::Result
fn visit_trait_ref(&mut self, t: &'v TraitRef<'v>) -> Self::Result
fn visit_precise_capturing_arg( &mut self, arg: &'v PreciseCapturingArg<'v>, ) -> Self::Result
fn visit_poly_trait_ref(&mut self, t: &'v PolyTraitRef<'v>) -> Self::Result
fn visit_opaque_ty(&mut self, opaque: &'v OpaqueTy<'v>) -> Self::Result
fn visit_variant_data(&mut self, s: &'v VariantData<'v>) -> Self::Result
fn visit_enum_def( &mut self, enum_definition: &'v EnumDef<'v>, item_id: HirId, ) -> Self::Result
fn visit_label(&mut self, label: &'v Label) -> Self::Result
fn visit_infer(&mut self, inf: &'v InferArg) -> Self::Result
fn visit_qpath( &mut self, qpath: &'v QPath<'v>, id: HirId, _span: Span, ) -> Self::Result
fn visit_associated_item_kind( &mut self, kind: &'v AssocItemKind, ) -> Self::Result
fn visit_defaultness(&mut self, defaultness: &'v Defaultness) -> Self::Result
Source§impl<'v> Visitor<'v> for StatCollector<'v>
impl<'v> Visitor<'v> for StatCollector<'v>
fn visit_foreign_item(&mut self, i: &'v ForeignItem)
fn visit_item(&mut self, i: &'v Item)
fn visit_local(&mut self, l: &'v Local)
fn visit_block(&mut self, b: &'v Block)
fn visit_stmt(&mut self, s: &'v Stmt)
fn visit_param(&mut self, p: &'v Param)
fn visit_arm(&mut self, a: &'v Arm)
fn visit_pat(&mut self, p: &'v Pat)
fn visit_expr(&mut self, e: &'v Expr)
fn visit_ty(&mut self, t: &'v Ty)
fn visit_generic_param(&mut self, g: &'v GenericParam)
fn visit_where_predicate(&mut self, p: &'v WherePredicate)
fn visit_fn(&mut self, fk: FnKind<'v>, _: Span, _: NodeId)
fn visit_assoc_item(&mut self, i: &'v AssocItem, ctxt: AssocCtxt)
fn visit_param_bound(&mut self, b: &'v GenericBound, _ctxt: BoundKind)
fn visit_field_def(&mut self, s: &'v FieldDef)
fn visit_variant(&mut self, v: &'v Variant)
fn visit_path_segment(&mut self, path_segment: &'v PathSegment)
fn visit_generic_args(&mut self, g: &'v GenericArgs)
fn visit_attribute(&mut self, attr: &'v Attribute)
fn visit_expr_field(&mut self, f: &'v ExprField)
fn visit_crate(&mut self, krate: &'v Crate)
fn visit_inline_asm(&mut self, asm: &'v InlineAsm)
fn visit_ident(&mut self, _ident: &'ast Ident) -> Self::Result
fn visit_anon_const(&mut self, c: &'ast AnonConst) -> Self::Result
Source§fn visit_method_receiver_expr(&mut self, ex: &'ast Expr) -> Self::Result
fn visit_method_receiver_expr(&mut self, ex: &'ast Expr) -> Self::Result
stmt_expr_attributes
.
It can be removed once that feature is stabilized.fn visit_generics(&mut self, g: &'ast Generics) -> Self::Result
fn visit_closure_binder(&mut self, b: &'ast ClosureBinder) -> Self::Result
fn visit_trait_ref(&mut self, t: &'ast TraitRef) -> Self::Result
fn visit_precise_capturing_arg(&mut self, arg: &'ast PreciseCapturingArg)
fn visit_poly_trait_ref(&mut self, t: &'ast PolyTraitRef) -> Self::Result
fn visit_variant_data(&mut self, s: &'ast VariantData) -> Self::Result
fn visit_enum_def(&mut self, enum_definition: &'ast EnumDef) -> Self::Result
fn visit_variant_discr(&mut self, discr: &'ast AnonConst) -> Self::Result
fn visit_label(&mut self, label: &'ast Label) -> Self::Result
fn visit_lifetime( &mut self, lifetime: &'ast Lifetime, _: LifetimeCtxt, ) -> Self::Result
fn visit_mac_call(&mut self, mac: &'ast MacCall) -> Self::Result
fn visit_mac_def(&mut self, _mac: &'ast MacroDef, _id: NodeId) -> Self::Result
fn visit_path(&mut self, path: &'ast Path, _id: NodeId) -> Self::Result
fn visit_use_tree( &mut self, use_tree: &'ast UseTree, id: NodeId, _nested: bool, ) -> Self::Result
fn visit_generic_arg(&mut self, generic_arg: &'ast GenericArg) -> Self::Result
fn visit_assoc_item_constraint( &mut self, constraint: &'ast AssocItemConstraint, ) -> Self::Result
fn visit_vis(&mut self, vis: &'ast Visibility) -> Self::Result
fn visit_fn_ret_ty(&mut self, ret_ty: &'ast FnRetTy) -> Self::Result
fn visit_fn_header(&mut self, _header: &'ast FnHeader) -> Self::Result
fn visit_pat_field(&mut self, fp: &'ast PatField) -> Self::Result
fn visit_format_args(&mut self, fmt: &'ast FormatArgs) -> Self::Result
fn visit_inline_asm_sym(&mut self, sym: &'ast InlineAsmSym) -> Self::Result
fn visit_capture_by(&mut self, _capture_by: &'ast CaptureBy) -> Self::Result
Auto Trait Implementations§
impl<'k> DynSend for StatCollector<'k>
impl<'k> DynSync for StatCollector<'k>
impl<'k> Freeze for StatCollector<'k>
impl<'k> !RefUnwindSafe for StatCollector<'k>
impl<'k> !Send for StatCollector<'k>
impl<'k> !Sync for StatCollector<'k>
impl<'k> Unpin for StatCollector<'k>
impl<'k> !UnwindSafe for StatCollector<'k>
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
Source§impl<T> Filterable for T
impl<T> Filterable for T
Source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
Source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
Source§impl<T> Pointable for T
impl<T> Pointable for T
Source§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
Source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
Source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T
Source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
Source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
Source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 72 bytes