Struct rustc_resolve::late::LateResolutionVisitor

struct LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
    r: &'b mut Resolver<'a, 'tcx>,
    parent_scope: ParentScope<'a>,
    ribs: PerNS<Vec<Rib<'a>>>,
    last_block_rib: Option<Rib<'a>>,
    label_ribs: Vec<Rib<'a, NodeId>>,
    lifetime_ribs: Vec<LifetimeRib>,
    lifetime_elision_candidates: Option<Vec<(LifetimeRes, LifetimeElisionCandidate)>>,
    current_trait_ref: Option<(Module<'a>, TraitRef)>,
    diag_metadata: Box<DiagMetadata<'ast>>,
    in_func_body: bool,
    lifetime_uses: FxHashMap<LocalDefId, LifetimeUseSet>,
}

Fields

r: &'b mut Resolver<'a, 'tcx>

parent_scope: ParentScope<'a>

The module that represents the current item scope.

ribs: PerNS<Vec<Rib<'a>>>

The current set of local scopes for types and values.

last_block_rib: Option<Rib<'a>>

Previous popped rib, only used for diagnostic.

label_ribs: Vec<Rib<'a, NodeId>>

The current set of local scopes, for labels.

lifetime_ribs: Vec<LifetimeRib>

The current set of local scopes for lifetimes.

lifetime_elision_candidates: Option<Vec<(LifetimeRes, LifetimeElisionCandidate)>>

We are looking for lifetimes in an elision context. The set contains all the resolutions that we encountered so far. They will be used to determine the correct lifetime for the fn return type. The LifetimeElisionCandidate is used for diagnostics, to suggest introducing named lifetimes.

current_trait_ref: Option<(Module<'a>, TraitRef)>

The trait that the current context can refer to.

diag_metadata: Box<DiagMetadata<'ast>>

Fields used to add information to diagnostic errors.

in_func_body: bool

State used to know whether to ignore resolution errors for function bodies.

In particular, rustdoc uses this to avoid giving errors for cfg() items. In most cases this will be None, in which case errors will always be reported. If it is true, then it will be updated when entering a nested function or trait body.

lifetime_uses: FxHashMap<LocalDefId, LifetimeUseSet>

Count the number of places a lifetime is used.

Implementations

impl<'a: 'ast, 'ast, 'tcx> LateResolutionVisitor<'a, '_, 'ast, 'tcx>

fn make_base_error( &mut self, path: &[Segment], span: Span, source: PathSource<'_>, res: Option<Res<NodeId>> ) -> BaseError

pub(crate) fn smart_resolve_partial_mod_path_errors( &mut self, prefix_path: &[Segment], following_seg: Option<&Segment> ) -> Vec<ImportSuggestion>

Try to suggest for a module path that cannot be resolved. Such as fmt::Debug where fmt is not resolved without importing, here we search with lookup_import_candidates for a module named fmt with TypeNS as namespace.

We need a separate function here because we won’t suggest for a path with single segment and we won’t change SourcePath api is_expected to match Type with DefKind::Mod

pub(crate) fn smart_resolve_report_errors( &mut self, path: &[Segment], following_seg: Option<&Segment>, span: Span, source: PathSource<'_>, res: Option<Res<NodeId>> ) -> (Diag<'tcx>, Vec<ImportSuggestion>)

Handles error reporting for smart_resolve_path_fragment function. Creates base error and amends it with one short label and possibly some longer helps/notes.

fn detect_assoc_type_constraint_meant_as_path( &self, err: &mut Diag<'_>, base_error: &BaseError )

fn suggest_self_or_self_ref( &mut self, err: &mut Diag<'_>, path: &[Segment], span: Span )

fn try_lookup_name_relaxed( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, path: &[Segment], following_seg: Option<&Segment>, span: Span, res: Option<Res<NodeId>>, base_error: &BaseError ) -> (bool, Vec<ImportSuggestion>)

fn suggest_trait_and_bounds( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, res: Option<Res<NodeId>>, span: Span, base_error: &BaseError ) -> bool

fn suggest_typo( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, path: &[Segment], following_seg: Option<&Segment>, span: Span, base_error: &BaseError ) -> bool

fn suggest_shadowed( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, path: &[Segment], following_seg: Option<&Segment>, span: Span ) -> bool

fn err_code_special_cases( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, path: &[Segment], span: Span )

fn suggest_self_ty( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, path: &[Segment], span: Span ) -> bool

Emit special messages for unresolved Self and self.

fn suggest_self_value( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, path: &[Segment], span: Span ) -> bool

fn suggest_at_operator_in_slice_pat_with_range( &mut self, err: &mut Diag<'_>, path: &[Segment] )

fn suggest_swapping_misplaced_self_ty_and_trait( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, res: Option<Res<NodeId>>, span: Span )

fn suggest_bare_struct_literal(&mut self, err: &mut Diag<'_>)

fn suggest_changing_type_to_const_param( &mut self, err: &mut Diag<'_>, res: Option<Res<NodeId>>, source: PathSource<'_>, span: Span )

fn suggest_pattern_match_with_let( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, span: Span ) -> bool

fn get_single_associated_item( &mut self, path: &[Segment], source: &PathSource<'_>, filter_fn: &impl Fn(Res<NodeId>) -> bool ) -> Option<TypoSuggestion>

fn restrict_assoc_type_in_where_clause( &mut self, span: Span, err: &mut Diag<'_> ) -> bool

Given where <T as Bar>::Baz: String, suggest where T: Bar<Baz = String>.

fn call_has_self_arg( &self, source: PathSource<'_> ) -> Option<(Span, Option<Span>)>

Check if the source is call expression and the first argument is self. If true, return the span of whole call and the span for all arguments expect the first one (self).

fn followed_by_brace(&self, span: Span) -> (bool, Option<Span>)

fn smart_resolve_context_dependent_help( &mut self, err: &mut Diag<'_>, span: Span, source: PathSource<'_>, path: &[Segment], res: Res<NodeId>, path_str: &str, fallback_label: &str ) -> bool

Provides context-dependent help for errors reported by the smart_resolve_path_fragment function. Returns true if able to provide context-dependent help.

fn suggest_alternative_construction_methods( &mut self, def_id: DefId, err: &mut Diag<'_>, path_span: Span, call_span: Span, args: &[P<Expr>] )

fn has_private_fields(&self, def_id: DefId) -> bool

pub(crate) fn find_similarly_named_assoc_item( &mut self, ident: Symbol, kind: &AssocItemKind ) -> Option<Symbol>

Given the target ident and kind, search for the similarly named associated item in self.current_trait_ref.

fn lookup_assoc_candidate<FilterFn>( &mut self, ident: Ident, ns: Namespace, filter_fn: FilterFn, called: bool ) -> Option<AssocSuggestion>

where FilterFn: Fn(Res<NodeId>) -> bool,

fn lookup_typo_candidate( &mut self, path: &[Segment], following_seg: Option<&Segment>, ns: Namespace, filter_fn: &impl Fn(Res<NodeId>) -> bool ) -> TypoCandidate

fn likely_rust_type(path: &[Segment]) -> Option<Symbol>

fn let_binding_suggestion( &mut self, err: &mut Diag<'_>, ident_span: Span ) -> bool

fn find_module( &mut self, def_id: DefId ) -> Option<(Module<'a>, ImportSuggestion)>

fn collect_enum_ctors( &mut self, def_id: DefId ) -> Option<Vec<(Path, DefId, CtorKind)>>

fn suggest_using_enum_variant( &mut self, err: &mut Diag<'_>, source: PathSource<'_>, def_id: DefId, span: Span )

Adds a suggestion for using an enum’s variant when an enum is used instead.

pub(crate) fn suggest_adding_generic_parameter( &self, path: &[Segment], source: PathSource<'_> ) -> Option<(Span, &'static str, String, Applicability)>

pub(crate) fn suggestion_for_label_in_rib( &self, rib_index: usize, label: Ident ) -> Option<(Ident, bool)>

Given the target label, search the rib_indexth label rib for similarly named labels, optionally returning the closest match and whether it is reachable.

pub(crate) fn maybe_report_lifetime_uses( &mut self, generics_span: Span, params: &[GenericParam] )

pub(crate) fn emit_undeclared_lifetime_error( &self, lifetime_ref: &Lifetime, outer_lifetime_ref: Option<Ident> )

fn suggest_introducing_lifetime( &self, err: &mut Diag<'_>, name: Option<&str>, suggest: impl Fn(&mut Diag<'_>, bool, Span, Cow<'static, str>, String) -> bool )

pub(crate) fn emit_non_static_lt_in_const_param_ty_error( &self, lifetime_ref: &Lifetime )

pub(crate) fn emit_forbidden_non_static_lifetime_error( &self, cause: NoConstantGenericsReason, lifetime_ref: &Lifetime )

Non-static lifetimes are prohibited in anonymous constants under min_const_generics. This function will emit an error if generic_const_exprs is not enabled, the body identified by body_id is an anonymous constant and lifetime_ref is non-static.

pub(crate) fn report_missing_lifetime_specifiers( &mut self, lifetime_refs: Vec<MissingLifetime>, function_param_lifetimes: Option<(Vec<MissingLifetime>, Vec<ElisionFnParameter>)> ) -> ErrorGuaranteed

fn add_missing_lifetime_specifiers_label( &mut self, err: &mut Diag<'_>, lifetime_refs: Vec<MissingLifetime>, function_param_lifetimes: Option<(Vec<MissingLifetime>, Vec<ElisionFnParameter>)> )

impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx>

fn new( resolver: &'b mut Resolver<'a, 'tcx> ) -> LateResolutionVisitor<'a, 'b, 'ast, 'tcx>

fn maybe_resolve_ident_in_lexical_scope( &mut self, ident: Ident, ns: Namespace ) -> Option<LexicalScopeBinding<'a>>

fn resolve_ident_in_lexical_scope( &mut self, ident: Ident, ns: Namespace, finalize: Option<Finalize>, ignore_binding: Option<Interned<'a, NameBindingData<'a>>> ) -> Option<LexicalScopeBinding<'a>>

fn resolve_path( &mut self, path: &[Segment], opt_ns: Option<Namespace>, finalize: Option<Finalize> ) -> PathResult<'a>

fn with_rib<T>( &mut self, ns: Namespace, kind: RibKind<'a>, work: impl FnOnce(&mut Self) -> T ) -> T

Do some work within a new innermost rib of the given kind in the given namespace (ns).

fn with_scope<T>(&mut self, id: NodeId, f: impl FnOnce(&mut Self) -> T) -> T

fn visit_generic_params( &mut self, params: &'ast [GenericParam], add_self_upper: bool )

fn with_lifetime_rib<T>( &mut self, kind: LifetimeRibKind, work: impl FnOnce(&mut Self) -> T ) -> T

fn resolve_lifetime(&mut self, lifetime: &'ast Lifetime, use_ctxt: LifetimeCtxt)

fn resolve_anonymous_lifetime(&mut self, lifetime: &Lifetime, elided: bool)

fn resolve_elided_lifetime(&mut self, anchor_id: NodeId, span: Span)

fn create_fresh_lifetime( &mut self, ident: Ident, binder: NodeId, kind: MissingLifetimeKind ) -> LifetimeRes

fn resolve_elided_lifetimes_in_path( &mut self, partial_res: PartialRes, path: &[Segment], source: PathSource<'_>, path_span: Span )

fn record_lifetime_res( &mut self, id: NodeId, res: LifetimeRes, candidate: LifetimeElisionCandidate )

fn record_lifetime_param(&mut self, id: NodeId, res: LifetimeRes)

fn resolve_fn_signature( &mut self, fn_id: NodeId, has_self: bool, inputs: impl Iterator<Item = (Option<&'ast Pat>, &'ast Ty)> + Clone, output_ty: &'ast FnRetTy )

Perform resolution of a function signature, accounting for lifetime elision.

fn resolve_fn_params( &mut self, has_self: bool, inputs: impl Iterator<Item = (Option<&'ast Pat>, &'ast Ty)> ) -> Result<LifetimeRes, (Vec<MissingLifetime>, Vec<ElisionFnParameter>)>

Resolve inside function parameters and parameter types. Returns the lifetime for elision in fn return type, or diagnostic information in case of elision failure.

fn find_lifetime_for_self(&self, ty: &'ast Ty) -> Set1<LifetimeRes>

List all the lifetimes that appear in the provided type.

fn resolve_label( &mut self, label: Ident ) -> Result<(NodeId, Span), ResolutionError<'a>>

Searches the current set of local scopes for labels. Returns the NodeId of the resolved label and reports an error if the label is not found or is unreachable.

fn is_label_valid_from_rib(&self, rib_index: usize) -> bool

Determine whether or not a label from the rib_indexth label rib is reachable.

fn resolve_adt(&mut self, item: &'ast Item, generics: &'ast Generics)

fn future_proof_import(&mut self, use_tree: &UseTree)

fn resolve_item(&mut self, item: &'ast Item)

fn with_generic_param_rib<'c, F>( &'c mut self, params: &'c [GenericParam], kind: RibKind<'a>, lifetime_kind: LifetimeRibKind, f: F )

where F: FnOnce(&mut Self),

fn with_label_rib(&mut self, kind: RibKind<'a>, f: impl FnOnce(&mut Self))

fn with_static_rib(&mut self, def_kind: DefKind, f: impl FnOnce(&mut Self))

fn with_constant_rib( &mut self, is_repeat: IsRepeatExpr, may_use_generics: ConstantHasGenerics, item: Option<(Ident, ConstantItemKind)>, f: impl FnOnce(&mut Self) )

fn with_current_self_type<T>( &mut self, self_type: &Ty, f: impl FnOnce(&mut Self) -> T ) -> T

fn with_current_self_item<T>( &mut self, self_item: &Item, f: impl FnOnce(&mut Self) -> T ) -> T

fn resolve_trait_items(&mut self, trait_items: &'ast [P<AssocItem>])

When evaluating a trait use its associated types’ idents for suggestions in E0412.

fn with_optional_trait_ref<T>( &mut self, opt_trait_ref: Option<&TraitRef>, self_type: &'ast Ty, f: impl FnOnce(&mut Self, Option<DefId>) -> T ) -> T

This is called to resolve a trait reference from an impl (i.e., impl Trait for Foo).

fn with_self_rib_ns( &mut self, ns: Namespace, self_res: Res<NodeId>, f: impl FnOnce(&mut Self) )

fn with_self_rib(&mut self, self_res: Res<NodeId>, f: impl FnOnce(&mut Self))

fn resolve_implementation( &mut self, attrs: &[Attribute], generics: &'ast Generics, opt_trait_reference: &'ast Option<TraitRef>, self_type: &'ast Ty, item_id: NodeId, impl_items: &'ast [P<AssocItem>] )

fn resolve_impl_item( &mut self, item: &'ast AssocItem, seen_trait_items: &mut FxHashMap<DefId, Span>, trait_id: Option<DefId> )

fn check_trait_item<F>( &mut self, id: NodeId, ident: Ident, kind: &AssocItemKind, ns: Namespace, span: Span, seen_trait_items: &mut FxHashMap<DefId, Span>, err: F )

where F: FnOnce(Ident, String, Option<Symbol>) -> ResolutionError<'a>,

fn resolve_const_body( &mut self, expr: &'ast Expr, item: Option<(Ident, ConstantItemKind)> )

fn resolve_delegation(&mut self, delegation: &'ast Delegation)

fn resolve_params(&mut self, params: &'ast [Param])

fn resolve_local(&mut self, local: &'ast Local)

fn compute_and_check_binding_map( &mut self, pat: &Pat ) -> Result<FxIndexMap<Ident, BindingInfo>, IsNeverPattern>

Build a map from pattern identifiers to binding-info’s, and check the bindings are consistent when encountering or-patterns and never patterns. This is done hygienically: this could arise for a macro that expands into an or-pattern where one ‘x’ was from the user and one ‘x’ came from the macro.

A never pattern by definition indicates an unreachable case. For example, matching on Result<T, &!> could look like:

let foo: Result<u32, &!> = Ok(0);
match foo {
    Ok(x) => bar(x),
    Err(&!),
}

This extends to product types: (x, !) is likewise unreachable. So it doesn’t make sense to have a binding here, and we tell the user to use _ instead.

fn is_base_res_local(&self, nid: NodeId) -> bool

fn compute_and_check_or_pat_binding_map( &mut self, pats: &[P<Pat>] ) -> Result<FxIndexMap<Ident, BindingInfo>, IsNeverPattern>

Compute the binding map for an or-pattern. Checks that all of the arms in the or-pattern have exactly the same set of bindings, with the same binding modes for each. Returns the computed binding map and a boolean indicating whether the pattern is a never pattern.

A never pattern by definition indicates an unreachable case. For example, destructuring a Result<T, &!> could look like:

let (Ok(x) | Err(&!)) = foo();

Because the Err(&!) branch is never reached, it does not need to have the same bindings as the other branches of the or-pattern. So we must ignore never pattern when checking the bindings of an or-pattern. Moreover, if all the subpatterns are never patterns (e.g. Ok(!) | Err(!)), then the pattern as a whole counts as a never pattern (since it’s definitionallly unreachable).

fn check_consistent_bindings(&mut self, pat: &'ast Pat)

Check the consistency of bindings wrt or-patterns and never patterns.

fn resolve_arm(&mut self, arm: &'ast Arm)

fn resolve_pattern_top(&mut self, pat: &'ast Pat, pat_src: PatternSource)

Arising from source, resolve a top level pattern.

fn resolve_pattern( &mut self, pat: &'ast Pat, pat_src: PatternSource, bindings: &mut SmallVec<[(PatBoundCtx, FxHashSet<Ident>); 1]> )

fn resolve_pattern_inner( &mut self, pat: &Pat, pat_src: PatternSource, bindings: &mut SmallVec<[(PatBoundCtx, FxHashSet<Ident>); 1]> )

Resolve bindings in a pattern. This is a helper to resolve_pattern.

bindings

A stack of sets of bindings accumulated.

In each set, PatBoundCtx::Product denotes that a found binding in it should be interpreted as re-binding an already bound binding. This results in an error. Meanwhile, PatBound::Or denotes that a found binding in the set should result in reusing this binding rather than creating a fresh one.

When called at the top level, the stack must have a single element with PatBound::Product. Otherwise, pushing to the stack happens as or-patterns (p_0 | ... | p_n) are encountered and the context needs to be switched to PatBoundCtx::Or and then PatBoundCtx::Product for each p_i. When each p_i has been dealt with, the top set is merged with its parent. When a whole or-pattern has been dealt with, the thing happens.

See the implementation and fresh_binding for more details.

fn fresh_binding( &mut self, ident: Ident, pat_id: NodeId, pat_src: PatternSource, bindings: &mut SmallVec<[(PatBoundCtx, FxHashSet<Ident>); 1]> ) -> Res<NodeId>

fn innermost_rib_bindings( &mut self, ns: Namespace ) -> &mut FxHashMap<Ident, Res<NodeId>>

fn try_resolve_as_non_binding( &mut self, pat_src: PatternSource, ann: BindingMode, ident: Ident, has_sub: bool ) -> Option<Res<NodeId>>

fn smart_resolve_path( &mut self, id: NodeId, qself: &Option<P<QSelf>>, path: &Path, source: PathSource<'ast> )

fn smart_resolve_path_fragment( &mut self, qself: &Option<P<QSelf>>, path: &[Segment], source: PathSource<'ast>, finalize: Finalize, record_partial_res: RecordPartialRes ) -> PartialRes

fn self_type_is_available(&mut self) -> bool

fn self_value_is_available(&mut self, self_span: Span) -> bool

fn report_error(&mut self, span: Span, resolution_error: ResolutionError<'a>)

A wrapper around Resolver::report_error.

This doesn’t emit errors for function bodies if this is rustdoc.

fn should_report_errs(&self) -> bool

If we’re actually rustdoc then avoid giving a name resolution error for cfg() items.

fn resolve_qpath_anywhere( &mut self, qself: &Option<P<QSelf>>, path: &[Segment], primary_ns: Namespace, span: Span, defer_to_typeck: bool, finalize: Finalize ) -> Result<Option<PartialRes>, Spanned<ResolutionError<'a>>>

fn resolve_qpath( &mut self, qself: &Option<P<QSelf>>, path: &[Segment], ns: Namespace, finalize: Finalize ) -> Result<Option<PartialRes>, Spanned<ResolutionError<'a>>>

Handles paths that may refer to associated items.

fn with_resolved_label( &mut self, label: Option<Label>, id: NodeId, f: impl FnOnce(&mut Self) )

fn resolve_labeled_block( &mut self, label: Option<Label>, id: NodeId, block: &'ast Block )

fn resolve_block(&mut self, block: &'ast Block)

fn resolve_anon_const( &mut self, constant: &'ast AnonConst, anon_const_kind: AnonConstKind )

fn resolve_anon_const_manual( &mut self, is_trivial_const_arg: bool, anon_const_kind: AnonConstKind, resolve_expr: impl FnOnce(&mut Self) )

There are a few places that we need to resolve an anon const but we did not parse an anon const so cannot provide an &'ast AnonConst. Right now this is just unbraced const arguments that were parsed as type arguments, and legact_const_generics which parse as normal function argument expressions. To avoid duplicating the code for resolving an anon const we have this function which lets the caller manually call resolve_expr or smart_resolve_path.

fn resolve_expr_field(&mut self, f: &'ast ExprField, e: &'ast Expr)

fn resolve_expr(&mut self, expr: &'ast Expr, parent: Option<&'ast Expr>)

fn record_candidate_traits_for_expr_if_necessary(&mut self, expr: &'ast Expr)

fn traits_in_scope( &mut self, ident: Ident, ns: Namespace ) -> Vec<TraitCandidate>

fn record_lifetime_params_for_impl_trait(&mut self, impl_trait_node_id: NodeId)

Construct the list of in-scope lifetime parameters for impl trait lowering. We include all lifetime parameters, either named or “Fresh”. The order of those parameters does not matter, as long as it is deterministic.

fn resolve_and_cache_rustdoc_path( &mut self, path_str: &str, ns: Namespace ) -> Option<Res<NodeId>>

fn resolve_doc_links( &mut self, attrs: &[Attribute], maybe_exported: MaybeExported<'_> )

fn lint_unused_qualifications( &mut self, path: &[Segment], ns: Namespace, finalize: Finalize )

Trait Implementations

impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast, 'tcx>

Walks the whole crate in DFS order, visiting each item, resolving names as it goes.

fn visit_attribute(&mut self, _: &'ast Attribute)

fn visit_item(&mut self, item: &'ast Item)

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

fn visit_block(&mut self, block: &'ast Block)

fn visit_anon_const(&mut self, _constant: &'ast AnonConst)

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

fn visit_pat(&mut self, p: &'ast Pat)

fn visit_local(&mut self, local: &'ast Local)

fn visit_ty(&mut self, ty: &'ast Ty)

fn visit_poly_trait_ref(&mut self, tref: &'ast PolyTraitRef)

fn visit_foreign_item(&mut self, foreign_item: &'ast ForeignItem)

fn visit_fn(&mut self, fn_kind: FnKind<'ast>, sp: Span, fn_id: NodeId)

fn visit_lifetime(&mut self, lifetime: &'ast Lifetime, use_ctxt: LifetimeCtxt)

fn visit_precise_capturing_arg(&mut self, arg: &'ast PreciseCapturingArg)

fn visit_generics(&mut self, generics: &'ast Generics)

fn visit_closure_binder(&mut self, b: &'ast ClosureBinder)

fn visit_generic_arg(&mut self, arg: &'ast GenericArg)

fn visit_assoc_constraint(&mut self, constraint: &'ast AssocConstraint)

fn visit_path_segment(&mut self, path_segment: &'ast PathSegment)

fn visit_where_predicate(&mut self, p: &'ast WherePredicate)

fn visit_inline_asm(&mut self, asm: &'ast InlineAsm)

fn visit_inline_asm_sym(&mut self, sym: &'ast InlineAsmSym)

fn visit_variant(&mut self, v: &'ast Variant)

fn visit_variant_discr(&mut self, discr: &'ast AnonConst)

fn visit_field_def(&mut self, f: &'ast FieldDef)

type Result = ()

The result type of the visit_* methods. Can be either (), or ControlFlow<T>.

fn visit_ident(&mut self, _ident: Ident) -> Self::Result

fn visit_stmt(&mut self, s: &'ast Stmt) -> Self::Result

fn visit_param(&mut self, param: &'ast Param) -> Self::Result

fn visit_method_receiver_expr(&mut self, ex: &'ast Expr) -> Self::Result

This method is a hack to workaround unstable of 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_assoc_item( &mut self, i: &'ast Item<AssocItemKind>, ctxt: AssocCtxt ) -> Self::Result

fn visit_trait_ref(&mut self, t: &'ast TraitRef) -> Self::Result

fn visit_param_bound( &mut self, bounds: &'ast GenericBound, _ctxt: BoundKind ) -> 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_label(&mut self, label: &'ast Label) -> 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_generic_args( &mut self, generic_args: &'ast GenericArgs ) -> 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_format_args(&mut self, fmt: &'ast FormatArgs) -> Self::Result

fn visit_capture_by(&mut self, _capture_by: &'ast CaptureBy) -> Self::Result

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: 336 bytes