Struct rustc::middle::dead::MarkSymbolVisitor

struct MarkSymbolVisitor<'a, 'tcx: 'a> {
    worklist: Vec<NodeId>,
    tcx: TyCtxt<'a, 'tcx, 'tcx>,
    tables: &'a TypeckTables<'tcx>,
    live_symbols: Box<FxHashSet<NodeId>>,
    repr_has_repr_c: bool,
    in_pat: bool,
    inherited_pub_visibility: bool,
    ignore_variant_stack: Vec<DefId>,
}

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Fields

worklist: Vec<NodeId>

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

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tables: &'a TypeckTables<'tcx>

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live_symbols: Box<FxHashSet<NodeId>>

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repr_has_repr_c: bool

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in_pat: bool

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inherited_pub_visibility: bool

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ignore_variant_stack: Vec<DefId>

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Methods

impl<'a, 'tcx> MarkSymbolVisitor<'a, 'tcx>

fn check_def_id(&mut self, def_id: DefId)

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fn insert_def_id(&mut self, def_id: DefId)

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fn handle_definition(&mut self, def: Def)

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fn lookup_and_handle_method(&mut self, id: HirId)

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fn handle_field_access(&mut self, lhs: &Expr, node_id: NodeId)

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fn handle_field_pattern_match(     &mut self,     lhs: &Pat,     def: Def,     pats: &[Spanned<FieldPat>] )

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fn mark_live_symbols(&mut self)

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fn visit_node(&mut self, node: &Node<'tcx>)

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fn mark_as_used_if_union(&mut self, adt: &AdtDef, fields: &HirVec<Field>)

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Trait Implementations

impl<'a, 'tcx> Visitor<'tcx> for MarkSymbolVisitor<'a, 'tcx>

fn nested_visit_map<'this>(&'this mut self) -> NestedVisitorMap<'this, 'tcx>

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The default versions of the visit_nested_XXX routines invoke this method to get a map to use. By selecting an enum variant, you control which kinds of nested HIR are visited; see NestedVisitorMap for details. By "nested HIR", we are referring to bits of HIR that are not directly embedded within one another but rather indirectly, through a table in the crate. This is done to control dependencies during incremental compilation: the non-inline bits of HIR can be tracked and hashed separately.

fn visit_nested_body(&mut self, body: BodyId)

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Invoked to visit the body of a function, method or closure. Like visit_nested_item, does nothing by default unless you override nested_visit_map to return Some(_), in which case it will walk the body.

fn visit_variant_data(     &mut self,     def: &'tcx VariantData,     _: Name,     _: &Generics,     _: NodeId,     _: Span )

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fn visit_expr(&mut self, expr: &'tcx Expr)

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fn visit_arm(&mut self, arm: &'tcx Arm)

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fn visit_pat(&mut self, pat: &'tcx Pat)

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fn visit_path(&mut self, path: &'tcx Path, _: HirId)

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fn visit_nested_item(&mut self, id: ItemId)

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Invoked when a nested item is encountered. By default does nothing unless you override nested_visit_map to return Some(_), in which case it will walk the item. You probably don't want to override this method -- instead, override nested_visit_map or use the "shallow" or "deep" visit patterns described on itemlikevisit::ItemLikeVisitor. 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.

fn visit_nested_trait_item(&mut self, id: TraitItemId)

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Like visit_nested_item(), but for trait items. See visit_nested_item() for advice on when to override this method.

fn visit_nested_impl_item(&mut self, id: ImplItemId)

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Like visit_nested_item(), but for impl items. See visit_nested_item() for advice on when to override this method.

fn visit_item(&mut self, i: &'v Item)

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Visit the top-level item and (optionally) nested items / impl items. See visit_nested_item for details.

fn visit_body(&mut self, b: &'v Body)

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fn as_deep_visitor<'s>(&'s mut self) -> DeepVisitor<'s, Self>

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When invoking visit_all_item_likes(), you need to supply an item-like visitor. This method converts a "intra-visit" visitor into an item-like visitor that walks the entire tree. If you use this, you probably don't want to process the contents of nested item-like things, since the outer loop will visit them as well.

fn visit_id(&mut self, _node_id: NodeId)

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fn visit_def_mention(&mut self, _def: Def)

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fn visit_name(&mut self, _span: Span, _name: Name)

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fn visit_ident(&mut self, ident: Ident)

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fn visit_mod(&mut self, m: &'v Mod, _s: Span, n: NodeId)

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fn visit_foreign_item(&mut self, i: &'v ForeignItem)

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fn visit_local(&mut self, l: &'v Local)

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fn visit_block(&mut self, b: &'v Block)

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fn visit_stmt(&mut self, s: &'v Stmt)

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fn visit_decl(&mut self, d: &'v Decl)

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fn visit_anon_const(&mut self, c: &'v AnonConst)

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fn visit_ty(&mut self, t: &'v Ty)

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fn visit_generic_param(&mut self, p: &'v GenericParam)

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fn visit_generics(&mut self, g: &'v Generics)

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fn visit_where_predicate(&mut self, predicate: &'v WherePredicate)

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fn visit_fn_decl(&mut self, fd: &'v FnDecl)

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fn visit_fn(     &mut self,     fk: FnKind<'v>,     fd: &'v FnDecl,     b: BodyId,     s: Span,     id: NodeId )

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fn visit_trait_item(&mut self, ti: &'v TraitItem)

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fn visit_trait_item_ref(&mut self, ii: &'v TraitItemRef)

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fn visit_impl_item(&mut self, ii: &'v ImplItem)

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fn visit_impl_item_ref(&mut self, ii: &'v ImplItemRef)

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fn visit_trait_ref(&mut self, t: &'v TraitRef)

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fn visit_param_bound(&mut self, bounds: &'v GenericBound)

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fn visit_poly_trait_ref(&mut self, t: &'v PolyTraitRef, m: TraitBoundModifier)

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fn visit_struct_field(&mut self, s: &'v StructField)

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fn visit_enum_def(     &mut self,     enum_definition: &'v EnumDef,     generics: &'v Generics,     item_id: NodeId,     _: Span )

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fn visit_variant(&mut self, v: &'v Variant, g: &'v Generics, item_id: NodeId)

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fn visit_label(&mut self, label: &'v Label)

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fn visit_generic_arg(&mut self, generic_arg: &'v GenericArg)

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fn visit_lifetime(&mut self, lifetime: &'v Lifetime)

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fn visit_qpath(&mut self, qpath: &'v QPath, id: HirId, span: Span)

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fn visit_path_segment(&mut self, path_span: Span, path_segment: &'v PathSegment)

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fn visit_generic_args(&mut self, path_span: Span, generic_args: &'v GenericArgs)

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fn visit_assoc_type_binding(&mut self, type_binding: &'v TypeBinding)

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fn visit_attribute(&mut self, _attr: &'v Attribute)

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fn visit_macro_def(&mut self, macro_def: &'v MacroDef)

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fn visit_vis(&mut self, vis: &'v Visibility)

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fn visit_associated_item_kind(&mut self, kind: &'v AssociatedItemKind)

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fn visit_defaultness(&mut self, defaultness: &'v Defaultness)

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