Trait rustc_ap_rustc_ast::visit::Visitor

pub trait Visitor<'ast>: Sized {
    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: &'ast Mod, 
        _s: Span, 
        _attrs: &[Attribute], 
        _n: NodeId
    ) { ... }
    pub fn visit_foreign_item(&mut self, i: &'ast ForeignItem) { ... }
    pub fn visit_global_asm(&mut self, ga: &'ast GlobalAsm) { ... }
    pub fn visit_item(&mut self, i: &'ast Item) { ... }
    pub fn visit_local(&mut self, l: &'ast Local) { ... }
    pub fn visit_block(&mut self, b: &'ast Block) { ... }
    pub fn visit_stmt(&mut self, s: &'ast Stmt) { ... }
    pub fn visit_param(&mut self, param: &'ast Param) { ... }
    pub fn visit_arm(&mut self, a: &'ast Arm) { ... }
    pub fn visit_pat(&mut self, p: &'ast Pat) { ... }
    pub fn visit_anon_const(&mut self, c: &'ast AnonConst) { ... }
    pub fn visit_expr(&mut self, ex: &'ast Expr) { ... }
    pub fn visit_expr_post(&mut self, _ex: &'ast Expr) { ... }
    pub fn visit_ty(&mut self, t: &'ast Ty) { ... }
    pub fn visit_generic_param(&mut self, param: &'ast GenericParam) { ... }
    pub fn visit_generics(&mut self, g: &'ast Generics) { ... }
    pub fn visit_where_predicate(&mut self, p: &'ast WherePredicate) { ... }
    pub fn visit_fn(&mut self, fk: FnKind<'ast>, s: Span, _: NodeId) { ... }
    pub fn visit_assoc_item(&mut self, i: &'ast AssocItem, ctxt: AssocCtxt) { ... }
    pub fn visit_trait_ref(&mut self, t: &'ast TraitRef) { ... }
    pub fn visit_param_bound(&mut self, bounds: &'ast GenericBound) { ... }
    pub fn visit_poly_trait_ref(
        &mut self, 
        t: &'ast PolyTraitRef, 
        m: &'ast TraitBoundModifier
    ) { ... }
    pub fn visit_variant_data(&mut self, s: &'ast VariantData) { ... }
    pub fn visit_struct_field(&mut self, s: &'ast StructField) { ... }
    pub fn visit_enum_def(
        &mut self, 
        enum_definition: &'ast EnumDef, 
        generics: &'ast Generics, 
        item_id: NodeId, 
        _: Span
    ) { ... }
    pub fn visit_variant(&mut self, v: &'ast Variant) { ... }
    pub fn visit_label(&mut self, label: &'ast Label) { ... }
    pub fn visit_lifetime(&mut self, lifetime: &'ast Lifetime) { ... }
    pub fn visit_mac_call(&mut self, mac: &'ast MacCall) { ... }
    pub fn visit_mac_def(&mut self, _mac: &'ast MacroDef, _id: NodeId) { ... }
    pub fn visit_path(&mut self, path: &'ast Path, _id: NodeId) { ... }
    pub fn visit_use_tree(
        &mut self, 
        use_tree: &'ast UseTree, 
        id: NodeId, 
        _nested: bool
    ) { ... }
    pub fn visit_path_segment(
        &mut self, 
        path_span: Span, 
        path_segment: &'ast PathSegment
    ) { ... }
    pub fn visit_generic_args(
        &mut self, 
        path_span: Span, 
        generic_args: &'ast GenericArgs
    ) { ... }
    pub fn visit_generic_arg(&mut self, generic_arg: &'ast GenericArg) { ... }
    pub fn visit_assoc_ty_constraint(
        &mut self, 
        constraint: &'ast AssocTyConstraint
    ) { ... }
    pub fn visit_attribute(&mut self, attr: &'ast Attribute) { ... }
    pub fn visit_vis(&mut self, vis: &'ast Visibility) { ... }
    pub fn visit_fn_ret_ty(&mut self, ret_ty: &'ast FnRetTy) { ... }
    pub fn visit_fn_header(&mut self, _header: &'ast FnHeader) { ... }
    pub fn visit_field(&mut self, f: &'ast Field) { ... }
    pub fn visit_field_pattern(&mut self, fp: &'ast FieldPat) { ... }
}

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

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: &'ast Mod,
    _s: Span,
    _attrs: &[Attribute],
    _n: NodeId
)

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

pub fn visit_global_asm(&mut self, ga: &'ast GlobalAsm)

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

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

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

pub fn visit_stmt(&mut self, s: &'ast Stmt)

pub fn visit_param(&mut self, param: &'ast Param)

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

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

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

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

pub fn visit_expr_post(&mut self, _ex: &'ast Expr)

pub fn visit_ty(&mut self, t: &'ast Ty)

pub fn visit_generic_param(&mut self, param: &'ast GenericParam)

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

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

pub fn visit_fn(&mut self, fk: FnKind<'ast>, s: Span, _: NodeId)

pub fn visit_assoc_item(&mut self, i: &'ast AssocItem, ctxt: AssocCtxt)

pub fn visit_trait_ref(&mut self, t: &'ast TraitRef)

pub fn visit_param_bound(&mut self, bounds: &'ast GenericBound)

pub fn visit_poly_trait_ref(
    &mut self,
    t: &'ast PolyTraitRef,
    m: &'ast TraitBoundModifier
)

pub fn visit_variant_data(&mut self, s: &'ast VariantData)

pub fn visit_struct_field(&mut self, s: &'ast StructField)

pub fn visit_enum_def(
    &mut self,
    enum_definition: &'ast EnumDef,
    generics: &'ast Generics,
    item_id: NodeId,
    _: Span
)

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

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

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

pub fn visit_mac_call(&mut self, mac: &'ast MacCall)

pub fn visit_mac_def(&mut self, _mac: &'ast MacroDef, _id: NodeId)

pub fn visit_path(&mut self, path: &'ast Path, _id: NodeId)

pub fn visit_use_tree(
    &mut self,
    use_tree: &'ast UseTree,
    id: NodeId,
    _nested: bool
)

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

pub fn visit_generic_args(
    &mut self,
    path_span: Span,
    generic_args: &'ast GenericArgs
)

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

pub fn visit_assoc_ty_constraint(&mut self, constraint: &'ast AssocTyConstraint)

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

pub fn visit_vis(&mut self, vis: &'ast Visibility)

pub fn visit_fn_ret_ty(&mut self, ret_ty: &'ast FnRetTy)

pub fn visit_fn_header(&mut self, _header: &'ast FnHeader)

pub fn visit_field(&mut self, f: &'ast Field)

pub fn visit_field_pattern(&mut self, fp: &'ast FieldPat)

Loading content...

Implementors

Loading content...