Trait syntax::visit::Visitor
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[src]
pub trait Visitor<'ast>: Sized { fn visit_name(&mut self, _span: Span, _name: Name) { ... } fn visit_ident(&mut self, span: Span, ident: Ident) { ... } fn visit_mod(&mut self, m: &'ast Mod, _s: Span, _n: NodeId) { ... } fn visit_foreign_item(&mut self, i: &'ast ForeignItem) { ... } fn visit_item(&mut self, i: &'ast Item) { ... } fn visit_local(&mut self, l: &'ast Local) { ... } fn visit_block(&mut self, b: &'ast Block) { ... } fn visit_stmt(&mut self, s: &'ast Stmt) { ... } fn visit_arm(&mut self, a: &'ast Arm) { ... } fn visit_pat(&mut self, p: &'ast Pat) { ... } fn visit_expr(&mut self, ex: &'ast Expr) { ... } fn visit_expr_post(&mut self, _ex: &'ast Expr) { ... } fn visit_ty(&mut self, t: &'ast Ty) { ... } fn visit_generics(&mut self, g: &'ast Generics) { ... } fn visit_where_predicate(&mut self, p: &'ast WherePredicate) { ... } fn visit_fn(&mut self,
fk: FnKind<'ast>,
fd: &'ast FnDecl,
s: Span,
_: NodeId) { ... } fn visit_trait_item(&mut self, ti: &'ast TraitItem) { ... } fn visit_impl_item(&mut self, ii: &'ast ImplItem) { ... } fn visit_trait_ref(&mut self, t: &'ast TraitRef) { ... } fn visit_ty_param_bound(&mut self, bounds: &'ast TyParamBound) { ... } fn visit_poly_trait_ref(&mut self,
t: &'ast PolyTraitRef,
m: &'ast TraitBoundModifier) { ... } fn visit_variant_data(&mut self,
s: &'ast VariantData,
_: Ident,
_: &'ast Generics,
_: NodeId,
_: Span) { ... } fn visit_struct_field(&mut self, s: &'ast StructField) { ... } fn visit_enum_def(&mut self,
enum_definition: &'ast EnumDef,
generics: &'ast Generics,
item_id: NodeId,
_: Span) { ... } fn visit_variant(&mut self,
v: &'ast Variant,
g: &'ast Generics,
item_id: NodeId) { ... } fn visit_lifetime(&mut self, lifetime: &'ast Lifetime) { ... } fn visit_lifetime_def(&mut self, lifetime: &'ast LifetimeDef) { ... } fn visit_mac(&mut self, _mac: &'ast Mac) { ... } fn visit_path(&mut self, path: &'ast Path, _id: NodeId) { ... } fn visit_path_list_item(&mut self,
prefix: &'ast Path,
item: &'ast PathListItem) { ... } fn visit_path_segment(&mut self,
path_span: Span,
path_segment: &'ast PathSegment) { ... } fn visit_path_parameters(&mut self,
path_span: Span,
path_parameters: &'ast PathParameters) { ... } fn visit_assoc_type_binding(&mut self, type_binding: &'ast TypeBinding) { ... } fn visit_attribute(&mut self, _attr: &'ast Attribute) { ... } fn visit_vis(&mut self, vis: &'ast Visibility) { ... } fn visit_fn_ret_ty(&mut self, ret_ty: &'ast FunctionRetTy) { ... } }
🔬 This is a nightly-only experimental API. (
rustc_private
)Each method of the Visitor trait is a hook to be potentially
overridden. Each method's default implementation recursively visits
the substructure of the input via the corresponding walk
method;
e.g. the visit_mod
method by default calls visit::walk_mod
.
If you want to ensure that your code handles every variant
explicitly, you need to override each method. (And you also need
to monitor future changes to Visitor
in case a new method with a
new default implementation gets introduced.)
Provided Methods
fn visit_name(&mut self, _span: Span, _name: Name)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_ident(&mut self, span: Span, ident: Ident)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_mod(&mut self, m: &'ast Mod, _s: Span, _n: NodeId)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_foreign_item(&mut self, i: &'ast ForeignItem)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_item(&mut self, i: &'ast Item)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_local(&mut self, l: &'ast Local)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_block(&mut self, b: &'ast Block)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_stmt(&mut self, s: &'ast Stmt)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_arm(&mut self, a: &'ast Arm)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_pat(&mut self, p: &'ast Pat)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_expr(&mut self, ex: &'ast Expr)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_expr_post(&mut self, _ex: &'ast Expr)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_ty(&mut self, t: &'ast Ty)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_generics(&mut self, g: &'ast Generics)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_where_predicate(&mut self, p: &'ast WherePredicate)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_fn(&mut self, fk: FnKind<'ast>, fd: &'ast FnDecl, s: Span, _: NodeId)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_trait_item(&mut self, ti: &'ast TraitItem)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_impl_item(&mut self, ii: &'ast ImplItem)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_trait_ref(&mut self, t: &'ast TraitRef)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_ty_param_bound(&mut self, bounds: &'ast TyParamBound)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_poly_trait_ref(&mut self,
t: &'ast PolyTraitRef,
m: &'ast TraitBoundModifier)
t: &'ast PolyTraitRef,
m: &'ast TraitBoundModifier)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_variant_data(&mut self,
s: &'ast VariantData,
_: Ident,
_: &'ast Generics,
_: NodeId,
_: Span)
s: &'ast VariantData,
_: Ident,
_: &'ast Generics,
_: NodeId,
_: Span)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_struct_field(&mut self, s: &'ast StructField)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_enum_def(&mut self,
enum_definition: &'ast EnumDef,
generics: &'ast Generics,
item_id: NodeId,
_: Span)
enum_definition: &'ast EnumDef,
generics: &'ast Generics,
item_id: NodeId,
_: Span)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_variant(&mut self,
v: &'ast Variant,
g: &'ast Generics,
item_id: NodeId)
v: &'ast Variant,
g: &'ast Generics,
item_id: NodeId)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_lifetime(&mut self, lifetime: &'ast Lifetime)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_lifetime_def(&mut self, lifetime: &'ast LifetimeDef)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_mac(&mut self, _mac: &'ast Mac)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_path(&mut self, path: &'ast Path, _id: NodeId)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_path_list_item(&mut self, prefix: &'ast Path, item: &'ast PathListItem)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_path_segment(&mut self,
path_span: Span,
path_segment: &'ast PathSegment)
path_span: Span,
path_segment: &'ast PathSegment)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_path_parameters(&mut self,
path_span: Span,
path_parameters: &'ast PathParameters)
path_span: Span,
path_parameters: &'ast PathParameters)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_assoc_type_binding(&mut self, type_binding: &'ast TypeBinding)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_attribute(&mut self, _attr: &'ast Attribute)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_vis(&mut self, vis: &'ast Visibility)
🔬 This is a nightly-only experimental API. (
rustc_private
)fn visit_fn_ret_ty(&mut self, ret_ty: &'ast FunctionRetTy)
🔬 This is a nightly-only experimental API. (
rustc_private
)Implementors
impl<'ast> Visitor<'ast> for NodeCounter