Struct rustc_passes::hir_stats::StatCollector
source · struct StatCollector<'k> {
krate: Option<Map<'k>>,
nodes: FxHashMap<&'static str, Node>,
seen: FxHashSet<Id>,
}
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<Id>
Implementations§
source§impl<'k> StatCollector<'k>
impl<'k> StatCollector<'k>
fn record<T>(&mut self, label: &'static str, id: Id, val: &T)
fn record_variant<T>( &mut self, label1: &'static str, label2: &'static str, id: Id, val: &T )
fn record_inner<T>( &mut self, label1: &'static str, label2: Option<&'static str>, id: Id, 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: &'v 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 Local<'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_let_expr(&mut self, lex: &'v Let<'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_type_binding(&mut self, type_binding: &'v TypeBinding<'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
§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)
fn visit_name(&mut self, _name: Symbol)
fn visit_ident(&mut self, ident: Ident)
fn visit_array_length(&mut self, len: &'v ArrayLen)
fn visit_anon_const(&mut self, c: &'v AnonConst)
fn visit_inline_const(&mut self, c: &'v ConstBlock)
fn visit_const_param_default(&mut self, _param: HirId, ct: &'v AnonConst)
fn visit_fn_ret_ty(&mut self, ret_ty: &'v FnRetTy<'v>)
fn visit_fn_decl(&mut self, fd: &'v FnDecl<'v>)
fn visit_trait_ref(&mut self, t: &'v TraitRef<'v>)
fn visit_poly_trait_ref(&mut self, t: &'v PolyTraitRef<'v>)
fn visit_variant_data(&mut self, s: &'v VariantData<'v>)
fn visit_enum_def(&mut self, enum_definition: &'v EnumDef<'v>, item_id: HirId)
fn visit_label(&mut self, label: &'v Label)
fn visit_infer(&mut self, inf: &'v InferArg)
fn visit_qpath(&mut self, qpath: &'v QPath<'v>, id: HirId, _span: Span)
fn visit_associated_item_kind(&mut self, kind: &'v AssocItemKind)
fn visit_defaultness(&mut self, defaultness: &'v Defaultness)
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: Ident)
fn visit_anon_const(&mut self, c: &'ast AnonConst)
source§fn visit_method_receiver_expr(&mut self, ex: &'ast Expr)
fn visit_method_receiver_expr(&mut self, ex: &'ast Expr)
stmt_expr_attributes
.
It can be removed once that feature is stabilized.fn visit_expr_post(&mut self, _ex: &'ast Expr)
fn visit_generics(&mut self, g: &'ast Generics)
fn visit_closure_binder(&mut self, b: &'ast ClosureBinder)
fn visit_trait_ref(&mut self, t: &'ast TraitRef)
fn visit_poly_trait_ref(&mut self, t: &'ast PolyTraitRef)
fn visit_variant_data(&mut self, s: &'ast VariantData)
fn visit_enum_def(&mut self, enum_definition: &'ast EnumDef)
fn visit_variant_discr(&mut self, discr: &'ast AnonConst)
fn visit_label(&mut self, label: &'ast Label)
fn visit_lifetime(&mut self, lifetime: &'ast Lifetime, _: LifetimeCtxt)
fn visit_mac_call(&mut self, mac: &'ast MacCall)
fn visit_mac_def(&mut self, _mac: &'ast MacroDef, _id: NodeId)
fn visit_path(&mut self, path: &'ast Path, _id: NodeId)
fn visit_use_tree(&mut self, use_tree: &'ast UseTree, id: NodeId, _nested: bool)
fn visit_generic_arg(&mut self, generic_arg: &'ast GenericArg)
fn visit_assoc_constraint(&mut self, constraint: &'ast AssocConstraint)
fn visit_vis(&mut self, vis: &'ast Visibility)
fn visit_fn_ret_ty(&mut self, ret_ty: &'ast FnRetTy)
fn visit_fn_header(&mut self, _header: &'ast FnHeader)
fn visit_pat_field(&mut self, fp: &'ast PatField)
fn visit_format_args(&mut self, fmt: &'ast FormatArgs)
fn visit_inline_asm_sym(&mut self, sym: &'ast InlineAsmSym)
Auto Trait Implementations§
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
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