Struct rustc_lint::builtin::ClashingExternDeclarations

pub struct ClashingExternDeclarations {
    seen_decls: FxHashMap<Symbol, HirId>,
}

Fields

seen_decls: FxHashMap<Symbol, HirId>

Map of function symbol name to the first-seen hir id for that symbol name.. If seen_decls contains an entry for key K, it means a symbol with name K has been seen by this lint and the symbol should be reported as a clashing declaration.

Implementations

impl ClashingExternDeclarations

pub(crate) fn new() -> Self

fn insert(&mut self, tcx: TyCtxt<'_>, fi: &ForeignItem<'_>) -> Option<HirId>

Insert a new foreign item into the seen set. If a symbol with the same name already exists for the item, return its HirId without updating the set.

fn name_of_extern_decl(tcx: TyCtxt<'_>, fi: &ForeignItem<'_>) -> SymbolName

Get the name of the symbol that’s linked against for a given extern declaration. That is, the name specified in a #[link_name = …] attribute if one was specified, else, just the symbol’s name.

fn structurally_same_type<'tcx>(
    cx: &LateContext<'tcx>,
    a: Ty<'tcx>,
    b: Ty<'tcx>,
    ckind: CItemKind
) -> bool

Checks whether two types are structurally the same enough that the declarations shouldn’t clash. We need this so we don’t emit a lint when two modules both declare an extern struct, with the same members (as the declarations shouldn’t clash).

impl ClashingExternDeclarations

pub fn get_lints() -> LintArray

Trait Implementations

impl<'tcx> LateLintPass<'tcx> for ClashingExternDeclarations

fn check_foreign_item(
    &mut self,
    cx: &LateContext<'tcx>,
    this_fi: &ForeignItem<'_>
)

fn check_param(&mut self, _: &LateContext<'tcx>, _: &'tcx Param<'tcx>)

fn check_body(&mut self, _: &LateContext<'tcx>, _: &'tcx Body<'tcx>)

fn check_body_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Body<'tcx>)

fn check_name(&mut self, _: &LateContext<'tcx>, _: Span, _: Symbol)

fn check_crate(&mut self, _: &LateContext<'tcx>)

fn check_crate_post(&mut self, _: &LateContext<'tcx>)

fn check_mod(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx Mod<'tcx>,
    _: Span,
    _: HirId
)

fn check_mod_post(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx Mod<'tcx>,
    _: Span,
    _: HirId
)

fn check_foreign_item_post(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx ForeignItem<'tcx>
)

fn check_item(&mut self, _: &LateContext<'tcx>, _: &'tcx Item<'tcx>)

fn check_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Item<'tcx>)

fn check_local(&mut self, _: &LateContext<'tcx>, _: &'tcx Local<'tcx>)

fn check_block(&mut self, _: &LateContext<'tcx>, _: &'tcx Block<'tcx>)

fn check_block_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Block<'tcx>)

fn check_stmt(&mut self, _: &LateContext<'tcx>, _: &'tcx Stmt<'tcx>)

fn check_arm(&mut self, _: &LateContext<'tcx>, _: &'tcx Arm<'tcx>)

fn check_pat(&mut self, _: &LateContext<'tcx>, _: &'tcx Pat<'tcx>)

fn check_expr(&mut self, _: &LateContext<'tcx>, _: &'tcx Expr<'tcx>)

fn check_expr_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Expr<'tcx>)

fn check_ty(&mut self, _: &LateContext<'tcx>, _: &'tcx Ty<'tcx>)

fn check_infer(&mut self, _: &LateContext<'tcx>, _: &'tcx InferArg)

fn check_generic_arg(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx GenericArg<'tcx>
)

fn check_generic_param(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx GenericParam<'tcx>
)

fn check_generics(&mut self, _: &LateContext<'tcx>, _: &'tcx Generics<'tcx>)

fn check_where_predicate(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx WherePredicate<'tcx>
)

fn check_poly_trait_ref(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx PolyTraitRef<'tcx>,
    _: TraitBoundModifier
)

fn check_fn(
    &mut self,
    _: &LateContext<'tcx>,
    _: FnKind<'tcx>,
    _: &'tcx FnDecl<'tcx>,
    _: &'tcx Body<'tcx>,
    _: Span,
    _: HirId
)

fn check_fn_post(
    &mut self,
    _: &LateContext<'tcx>,
    _: FnKind<'tcx>,
    _: &'tcx FnDecl<'tcx>,
    _: &'tcx Body<'tcx>,
    _: Span,
    _: HirId
)

fn check_trait_item(&mut self, _: &LateContext<'tcx>, _: &'tcx TraitItem<'tcx>)

fn check_trait_item_post(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx TraitItem<'tcx>
)

fn check_impl_item(&mut self, _: &LateContext<'tcx>, _: &'tcx ImplItem<'tcx>)

fn check_impl_item_post(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx ImplItem<'tcx>
)

fn check_struct_def(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx VariantData<'tcx>
)

fn check_struct_def_post(
    &mut self,
    _: &LateContext<'tcx>,
    _: &'tcx VariantData<'tcx>
)

fn check_field_def(&mut self, _: &LateContext<'tcx>, _: &'tcx FieldDef<'tcx>)

fn check_variant(&mut self, _: &LateContext<'tcx>, _: &'tcx Variant<'tcx>)

fn check_variant_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Variant<'tcx>)

fn check_lifetime(&mut self, _: &LateContext<'tcx>, _: &'tcx Lifetime)

fn check_path(&mut self, _: &LateContext<'tcx>, _: &'tcx Path<'tcx>, _: HirId)

fn check_attribute(&mut self, _: &LateContext<'tcx>, _: &'tcx Attribute)

fn enter_lint_attrs(&mut self, _: &LateContext<'tcx>, _: &'tcx [Attribute])

fn exit_lint_attrs(&mut self, _: &LateContext<'tcx>, _: &'tcx [Attribute])

impl LintPass for ClashingExternDeclarations

fn name(&self) -> &'static str

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: 32 bytes