1 // Simply gives a rought count of the number of nodes in an AST.
4 use rustc_ast::visit::*;
7 pub struct NodeCounter {
12 pub fn new() -> NodeCounter {
13 NodeCounter { count: 0 }
17 impl<'ast> Visitor<'ast> for NodeCounter {
18 fn visit_ident(&mut self, ident: Ident) {
20 walk_ident(self, ident);
22 fn visit_mod(&mut self, m: &Mod, _s: Span, _a: &[Attribute], _n: NodeId) {
26 fn visit_foreign_item(&mut self, i: &ForeignItem) {
28 walk_foreign_item(self, i)
30 fn visit_item(&mut self, i: &Item) {
34 fn visit_local(&mut self, l: &Local) {
38 fn visit_block(&mut self, b: &Block) {
42 fn visit_stmt(&mut self, s: &Stmt) {
46 fn visit_arm(&mut self, a: &Arm) {
50 fn visit_pat(&mut self, p: &Pat) {
54 fn visit_expr(&mut self, ex: &Expr) {
58 fn visit_ty(&mut self, t: &Ty) {
62 fn visit_generic_param(&mut self, param: &GenericParam) {
64 walk_generic_param(self, param)
66 fn visit_generics(&mut self, g: &Generics) {
68 walk_generics(self, g)
70 fn visit_fn(&mut self, fk: FnKind<'_>, s: Span, _: NodeId) {
74 fn visit_assoc_item(&mut self, ti: &AssocItem, ctxt: AssocCtxt) {
76 walk_assoc_item(self, ti, ctxt);
78 fn visit_trait_ref(&mut self, t: &TraitRef) {
80 walk_trait_ref(self, t)
82 fn visit_param_bound(&mut self, bounds: &GenericBound) {
84 walk_param_bound(self, bounds)
86 fn visit_poly_trait_ref(&mut self, t: &PolyTraitRef, m: &TraitBoundModifier) {
88 walk_poly_trait_ref(self, t, m)
90 fn visit_variant_data(&mut self, s: &VariantData) {
92 walk_struct_def(self, s)
94 fn visit_struct_field(&mut self, s: &StructField) {
96 walk_struct_field(self, s)
100 enum_definition: &EnumDef,
106 walk_enum_def(self, enum_definition, generics, item_id)
108 fn visit_variant(&mut self, v: &Variant) {
110 walk_variant(self, v)
112 fn visit_lifetime(&mut self, lifetime: &Lifetime) {
114 walk_lifetime(self, lifetime)
116 fn visit_mac(&mut self, _mac: &Mac) {
120 fn visit_path(&mut self, path: &Path, _id: NodeId) {
122 walk_path(self, path)
124 fn visit_use_tree(&mut self, use_tree: &UseTree, id: NodeId, _nested: bool) {
126 walk_use_tree(self, use_tree, id)
128 fn visit_generic_args(&mut self, path_span: Span, generic_args: &GenericArgs) {
130 walk_generic_args(self, path_span, generic_args)
132 fn visit_assoc_ty_constraint(&mut self, constraint: &AssocTyConstraint) {
134 walk_assoc_ty_constraint(self, constraint)
136 fn visit_attribute(&mut self, _attr: &Attribute) {