Struct rustc_ast_passes::ast_validation::AstValidator
source · struct AstValidator<'a> {
session: &'a Session,
features: &'a Features,
extern_mod: Option<Span>,
outer_trait_or_trait_impl: Option<TraitOrTraitImpl>,
has_proc_macro_decls: bool,
outer_impl_trait: Option<Span>,
disallow_tilde_const: Option<TildeConstReason>,
is_impl_trait_banned: bool,
extern_mod_safety: Option<Safety>,
lint_buffer: &'a mut LintBuffer,
}
Fields§
§session: &'a Session
§features: &'a Features
§extern_mod: Option<Span>
The span of the extern
in an extern { ... }
block, if any.
outer_trait_or_trait_impl: Option<TraitOrTraitImpl>
§has_proc_macro_decls: bool
§outer_impl_trait: Option<Span>
Used to ban nested impl Trait
, e.g., impl Into<impl Debug>
.
Nested impl Trait
is allowed in associated type position,
e.g., impl Iterator<Item = impl Debug>
.
disallow_tilde_const: Option<TildeConstReason>
§is_impl_trait_banned: bool
Used to ban impl Trait
in path projections like <impl Iterator>::Item
or Foo::Bar<impl Trait>
extern_mod_safety: Option<Safety>
Used to ban explicit safety on foreign items when the extern block is not marked as unsafe.
lint_buffer: &'a mut LintBuffer
Implementations§
source§impl<'a> AstValidator<'a>
impl<'a> AstValidator<'a>
fn with_in_trait_impl( &mut self, trait_: Option<(Const, ImplPolarity, &'a TraitRef)>, f: impl FnOnce(&mut Self), )
fn with_in_trait( &mut self, span: Span, constness: Option<Span>, f: impl FnOnce(&mut Self), )
fn with_in_extern_mod( &mut self, extern_mod_safety: Safety, f: impl FnOnce(&mut Self), )
fn with_banned_impl_trait(&mut self, f: impl FnOnce(&mut Self))
fn with_tilde_const( &mut self, disallowed: Option<TildeConstReason>, f: impl FnOnce(&mut Self), )
fn check_type_alias_where_clause_location( &mut self, ty_alias: &TyAlias, ) -> Result<(), WhereClauseBeforeTypeAlias>
fn with_impl_trait(&mut self, outer: Option<Span>, f: impl FnOnce(&mut Self))
fn walk_ty(&mut self, t: &'a Ty)
fn visit_struct_field_def(&mut self, field: &'a FieldDef)
fn dcx(&self) -> DiagCtxtHandle<'a>
fn visibility_not_permitted( &self, vis: &Visibility, note: VisibilityNotPermittedNote, )
fn check_decl_no_pat( decl: &FnDecl, report_err: impl FnMut(Span, Option<Ident>, bool), )
fn check_unnamed_field_ty(&self, ty: &Ty, span: Span)
fn deny_anon_struct_or_union(&self, ty: &Ty)
fn deny_unnamed_field(&self, field: &FieldDef)
fn check_trait_fn_not_const(&self, constness: Const, parent: &TraitOrTraitImpl)
fn check_fn_decl(&self, fn_decl: &FnDecl, self_semantic: SelfSemantic)
sourcefn check_decl_num_args(&self, fn_decl: &FnDecl)
fn check_decl_num_args(&self, fn_decl: &FnDecl)
Emits fatal error if function declaration has more than u16::MAX
arguments
Error is fatal to prevent errors during typechecking
sourcefn check_decl_cvariadic_pos(&self, fn_decl: &FnDecl)
fn check_decl_cvariadic_pos(&self, fn_decl: &FnDecl)
Emits an error if a function declaration has a variadic parameter in the
beginning or middle of parameter list.
Example: fn foo(..., x: i32)
will emit an error.
fn check_decl_attrs(&self, fn_decl: &FnDecl)
fn check_decl_self_param(&self, fn_decl: &FnDecl, self_semantic: SelfSemantic)
sourcefn check_item_safety(&self, span: Span, safety: Safety)
fn check_item_safety(&self, span: Span, safety: Safety)
This ensures that items can only be unsafe
(or unmarked) outside of extern
blocks.
This additionally ensures that within extern blocks, items can only be
safe
/unsafe
inside of a unsafe
-adorned extern block.
fn check_bare_fn_safety(&self, span: Span, safety: Safety)
fn check_defaultness(&self, span: Span, defaultness: Defaultness)
sourcefn ending_semi_or_hi(&self, sp: Span) -> Span
fn ending_semi_or_hi(&self, sp: Span) -> Span
If sp
ends with a semicolon, returns it as a Span
Otherwise, returns sp.shrink_to_hi()
fn check_type_no_bounds(&self, bounds: &[GenericBound], ctx: &str)
fn check_foreign_ty_genericless( &self, generics: &Generics, where_clauses: &TyAliasWhereClauses, )
fn check_foreign_kind_bodyless( &self, ident: Ident, kind: &str, body: Option<Span>, )
sourcefn check_foreign_fn_bodyless(&self, ident: Ident, body: Option<&Block>)
fn check_foreign_fn_bodyless(&self, ident: Ident, body: Option<&Block>)
An fn
in extern { ... }
cannot have a body { ... }
.
fn current_extern_span(&self) -> Span
sourcefn check_foreign_fn_headerless(&self, _: FnHeader)
fn check_foreign_fn_headerless(&self, _: FnHeader)
An fn
in extern { ... }
cannot have qualifiers, e.g. async fn
.
sourcefn check_foreign_item_ascii_only(&self, ident: Ident)
fn check_foreign_item_ascii_only(&self, ident: Ident)
An item in extern { ... }
cannot use non-ascii identifier.
sourcefn check_c_variadic_type(&self, fk: FnKind<'a>)
fn check_c_variadic_type(&self, fk: FnKind<'a>)
Reject invalid C-variadic types.
C-variadics must be:
- Non-const
- Either foreign, or free and
unsafe extern "C"
semantically
fn check_item_named(&self, ident: Ident, kind: &str)
fn check_nomangle_item_asciionly(&self, ident: Ident, item_span: Span)
fn check_mod_file_item_asciionly(&self, ident: Ident)
fn deny_generic_params(&self, generics: &Generics, ident: Span)
fn deny_super_traits(&self, bounds: &GenericBounds, ident_span: Span)
fn deny_where_clause(&self, where_clause: &WhereClause, ident_span: Span)
fn deny_items(&self, trait_items: &[P<AssocItem>], ident: Span)
fn correct_generic_order_suggestion(&self, data: &AngleBracketedArgs) -> String
sourcefn check_generic_args_before_constraints(&self, data: &AngleBracketedArgs)
fn check_generic_args_before_constraints(&self, data: &AngleBracketedArgs)
Enforce generic args coming before constraints in <...>
of a path segment.
fn visit_ty_common(&mut self, ty: &'a Ty)
fn maybe_lint_missing_abi(&mut self, span: Span, id: NodeId)
Trait Implementations§
source§impl<'a> Visitor<'a> for AstValidator<'a>
impl<'a> Visitor<'a> for AstValidator<'a>
fn visit_attribute(&mut self, attr: &Attribute)
fn visit_ty(&mut self, ty: &'a Ty)
fn visit_field_def(&mut self, field: &'a FieldDef)
fn visit_item(&mut self, item: &'a Item)
fn visit_foreign_item(&mut self, fi: &'a ForeignItem)
fn visit_generic_args(&mut self, generic_args: &'a GenericArgs)
fn visit_generics(&mut self, generics: &'a Generics)
fn visit_param_bound(&mut self, bound: &'a GenericBound, ctxt: BoundKind)
fn visit_fn(&mut self, fk: FnKind<'a>, span: Span, id: NodeId)
fn visit_assoc_item(&mut self, item: &'a AssocItem, ctxt: AssocCtxt)
fn visit_ident(&mut self, _ident: Ident) -> Self::Result
fn visit_local(&mut self, l: &'ast Local) -> Self::Result
fn visit_block(&mut self, b: &'ast Block) -> Self::Result
fn visit_stmt(&mut self, s: &'ast Stmt) -> Self::Result
fn visit_param(&mut self, param: &'ast Param) -> Self::Result
fn visit_arm(&mut self, a: &'ast Arm) -> Self::Result
fn visit_pat(&mut self, p: &'ast Pat) -> Self::Result
fn visit_anon_const(&mut self, c: &'ast AnonConst) -> Self::Result
fn visit_expr(&mut self, ex: &'ast Expr) -> 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_expr_post(&mut self, _ex: &'ast Expr) -> Self::Result
fn visit_generic_param(&mut self, param: &'ast GenericParam) -> Self::Result
fn visit_closure_binder(&mut self, b: &'ast ClosureBinder) -> Self::Result
fn visit_where_predicate(&mut self, p: &'ast WherePredicate) -> 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(&mut self, v: &'ast Variant) -> 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_path_segment( &mut self, path_segment: &'ast PathSegment, ) -> 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_expr_field(&mut self, f: &'ast ExprField) -> Self::Result
fn visit_pat_field(&mut self, fp: &'ast PatField) -> Self::Result
fn visit_crate(&mut self, krate: &'ast Crate) -> Self::Result
fn visit_inline_asm(&mut self, asm: &'ast InlineAsm) -> 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<'a> Freeze for AstValidator<'a>
impl<'a> !RefUnwindSafe for AstValidator<'a>
impl<'a> !Send for AstValidator<'a>
impl<'a> !Sync for AstValidator<'a>
impl<'a> Unpin for AstValidator<'a>
impl<'a> !UnwindSafe for AstValidator<'a>
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<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<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,
impl<T> MaybeSendSync for 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: 112 bytes