Struct rustc_passes::check_attr::CheckAttrVisitor

pub(in check_attr) struct CheckAttrVisitor<'tcx> {
    tcx: TyCtxt<'tcx>,
}

Fields

tcx: TyCtxt<'tcx>

Implementations

impl<'tcx> CheckAttrVisitor<'tcx>

pub(in check_attr) fn check_attributes<'hir>(
    &self,
    hir_id: HirId,
    attrs: &'hir [Attribute],
    span: &Span,
    target: Target,
    item: Option<ItemLike<'_>>
)

Checks any attribute.

pub(in check_attr) fn check_inline(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Checks if an #[inline] is applied to a function or a closure. Returns true if valid.

pub(in check_attr) fn check_track_caller<'hir>(
    &self,
    attr_span: &Span,
    attrs: &'hir [Attribute],
    span: &Span,
    target: Target
) -> bool

Checks if a #[track_caller] is applied to a non-naked function. Returns true if valid.

pub(in check_attr) fn check_non_exhaustive(
    &self,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Checks if the #[non_exhaustive] attribute on an item is valid. Returns true if valid.

pub(in check_attr) fn check_marker(
    &self,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Checks if the #[marker] attribute on an item is valid. Returns true if valid.

pub(in check_attr) fn check_target_feature(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Checks if the #[target_feature] attribute on item is valid. Returns true if valid.

pub(in check_attr) fn doc_alias_str_error(
    &self,
    meta: &NestedMetaItem
)

pub(in check_attr) fn check_doc_alias(
    &self,
    attr: &Attribute,
    hir_id: HirId,
    target: Target
) -> bool

pub(in check_attr) fn check_cold(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
)

Checks if #[cold] is applied to a non-function. Returns true if valid.

pub(in check_attr) fn check_link_name(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
)

Checks if #[link_name] is applied to an item other than a foreign function or static.

pub(in check_attr) fn check_no_link(
    &self,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Checks if #[no_link] is applied to an extern crate. Returns true if valid.

pub(in check_attr) fn check_export_name(
    &self,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Checks if #[export_name] is applied to a function or static. Returns true if valid.

pub(in check_attr) fn check_rustc_args_required_const(
    &self,
    attr: &Attribute,
    span: &Span,
    target: Target,
    item: Option<ItemLike<'_>>
) -> bool

Checks if #[rustc_args_required_const] is applied to a function and has a valid argument.

pub(in check_attr) fn check_link_section(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
)

Checks if #[link_section] is applied to a function or static.

pub(in check_attr) fn check_no_mangle(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
)

Checks if #[no_mangle] is applied to a function or static.

pub(in check_attr) fn check_repr<'hir>(
    &self,
    attrs: &'hir [Attribute],
    span: &Span,
    target: Target,
    item: Option<ItemLike<'_>>,
    hir_id: HirId
)

Checks if the #[repr] attributes on item are valid.

pub(in check_attr) fn check_used<'hir>(
    &self,
    attrs: &'hir [Attribute],
    target: Target
)

pub(in check_attr) fn check_allow_internal_unstable(
    &self,
    attr: &Attribute,
    span: &Span,
    target: Target,
    attrs: &[Attribute]
) -> bool

Outputs an error for #[allow_internal_unstable] which can only be applied to macros. (Allows proc_macro functions)

pub(in check_attr) fn check_rustc_allow_const_fn_unstable(
    &self,
    hir_id: HirId,
    attr: &Attribute,
    span: &Span,
    target: Target
) -> bool

Outputs an error for #[allow_internal_unstable] which can only be applied to macros. (Allows proc_macro functions)

Trait Implementations

impl<'tcx> Visitor<'tcx> for CheckAttrVisitor<'tcx>

type Map = Map<'tcx>

pub fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map>

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.

pub fn visit_item(&mut self, item: &'tcx Item<'tcx>)

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

pub fn visit_trait_item(&mut self, trait_item: &'tcx TraitItem<'tcx>)

pub fn visit_foreign_item(&mut self, f_item: &'tcx ForeignItem<'tcx>)

pub fn visit_impl_item(&mut self, impl_item: &'tcx ImplItem<'tcx>)

pub fn visit_stmt(&mut self, stmt: &'tcx Stmt<'tcx>)

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

pub fn visit_variant(
    &mut self,
    variant: &'tcx Variant<'tcx>,
    generics: &'tcx Generics<'tcx>,
    item_id: HirId
)

pub fn visit_nested_item(&mut self, id: ItemId)

Invoked when a nested item is encountered. By default does nothing unless you override nested_visit_map to return other than None, 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.

pub fn visit_nested_trait_item(&mut self, id: TraitItemId)

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

pub fn visit_nested_impl_item(&mut self, id: ImplItemId)

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

pub fn visit_nested_body(&mut self, id: BodyId)

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 other than None, in which case it will walk the body.

pub fn visit_param(&mut self, param: &'v Param<'v>)

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

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

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.

pub fn visit_id(&mut self, _hir_id: HirId)

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

pub fn visit_ident(&mut self, ident: Ident)

pub fn visit_mod(&mut self, m: &'v Mod<'v>, _s: Span, n: HirId)

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

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

pub fn visit_arm(&mut self, a: &'v Arm<'v>)

pub fn visit_pat(&mut self, p: &'v Pat<'v>)

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

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

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

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

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

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

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

pub fn visit_use(&mut self, path: &'v Path<'v>, hir_id: HirId)

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

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

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

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

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

pub fn visit_variant_data(
    &mut self,
    s: &'v VariantData<'v>,
    Symbol,
    &'v Generics<'v>,
    _parent_id: HirId,
    Span
)

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

pub fn visit_enum_def(
    &mut self,
    enum_definition: &'v EnumDef<'v>,
    generics: &'v Generics<'v>,
    item_id: HirId,
    Span
)

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

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

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

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

pub fn visit_path(&mut self, path: &'v Path<'v>, _id: HirId)

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

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

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

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

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

pub fn visit_vis(&mut self, vis: &'v Spanned<VisibilityKind<'v>>)

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

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