1 // Simply gives a rough count of the number of nodes in an AST.
3 use rustc_ast::visit::*;
5 use rustc_span::symbol::Ident;
8 pub struct NodeCounter {
13 pub fn new() -> NodeCounter {
14 NodeCounter { count: 0 }
18 impl<'ast> Visitor<'ast> for NodeCounter {
19 fn visit_ident(&mut self, ident: Ident) {
21 walk_ident(self, ident);
23 fn visit_foreign_item(&mut self, i: &ForeignItem) {
25 walk_foreign_item(self, i)
27 fn visit_item(&mut self, i: &Item) {
31 fn visit_local(&mut self, l: &Local) {
35 fn visit_block(&mut self, b: &Block) {
39 fn visit_stmt(&mut self, s: &Stmt) {
43 fn visit_arm(&mut self, a: &Arm) {
47 fn visit_pat(&mut self, p: &Pat) {
51 fn visit_expr(&mut self, ex: &Expr) {
55 fn visit_ty(&mut self, t: &Ty) {
59 fn visit_generic_param(&mut self, param: &GenericParam) {
61 walk_generic_param(self, param)
63 fn visit_generics(&mut self, g: &Generics) {
65 walk_generics(self, g)
67 fn visit_fn(&mut self, fk: visit::FnKind<'_>, s: Span, _: NodeId) {
71 fn visit_assoc_item(&mut self, ti: &AssocItem, ctxt: AssocCtxt) {
73 walk_assoc_item(self, ti, ctxt);
75 fn visit_trait_ref(&mut self, t: &TraitRef) {
77 walk_trait_ref(self, t)
79 fn visit_param_bound(&mut self, bounds: &GenericBound) {
81 walk_param_bound(self, bounds)
83 fn visit_poly_trait_ref(&mut self, t: &PolyTraitRef, m: &TraitBoundModifier) {
85 walk_poly_trait_ref(self, t, m)
87 fn visit_variant_data(&mut self, s: &VariantData) {
89 walk_struct_def(self, s)
91 fn visit_field_def(&mut self, s: &FieldDef) {
93 walk_field_def(self, s)
97 enum_definition: &EnumDef,
103 walk_enum_def(self, enum_definition, generics, item_id)
105 fn visit_variant(&mut self, v: &Variant) {
107 walk_variant(self, v)
109 fn visit_lifetime(&mut self, lifetime: &Lifetime) {
111 walk_lifetime(self, lifetime)
113 fn visit_mac_call(&mut self, mac: &MacCall) {
117 fn visit_path(&mut self, path: &Path, _id: NodeId) {
119 walk_path(self, path)
121 fn visit_use_tree(&mut self, use_tree: &UseTree, id: NodeId, _nested: bool) {
123 walk_use_tree(self, use_tree, id)
125 fn visit_generic_args(&mut self, path_span: Span, generic_args: &GenericArgs) {
127 walk_generic_args(self, path_span, generic_args)
129 fn visit_assoc_constraint(&mut self, constraint: &AssocConstraint) {
131 walk_assoc_constraint(self, constraint)
133 fn visit_attribute(&mut self, _attr: &Attribute) {