1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Simply gives a rought count of the number of nodes in an AST.
17 pub struct NodeCounter {
22 pub fn new() -> NodeCounter {
29 impl Visitor for NodeCounter {
30 fn visit_ident(&mut self, span: Span, ident: Ident) {
32 walk_ident(self, span, ident);
34 fn visit_mod(&mut self, m: &Mod, _s: Span, _n: NodeId) {
38 fn visit_foreign_item(&mut self, i: &ForeignItem) {
40 walk_foreign_item(self, i)
42 fn visit_item(&mut self, i: &Item) {
46 fn visit_local(&mut self, l: &Local) {
50 fn visit_block(&mut self, b: &Block) {
54 fn visit_stmt(&mut self, s: &Stmt) {
58 fn visit_arm(&mut self, a: &Arm) {
62 fn visit_pat(&mut self, p: &Pat) {
66 fn visit_expr(&mut self, ex: &Expr) {
70 fn visit_ty(&mut self, t: &Ty) {
74 fn visit_generics(&mut self, g: &Generics) {
76 walk_generics(self, g)
78 fn visit_fn(&mut self, fk: FnKind, fd: &FnDecl, b: &Block, s: Span, _: NodeId) {
80 walk_fn(self, fk, fd, b, s)
82 fn visit_trait_item(&mut self, ti: &TraitItem) {
84 walk_trait_item(self, ti)
86 fn visit_impl_item(&mut self, ii: &ImplItem) {
88 walk_impl_item(self, ii)
90 fn visit_trait_ref(&mut self, t: &TraitRef) {
92 walk_trait_ref(self, t)
94 fn visit_ty_param_bound(&mut self, bounds: &TyParamBound) {
96 walk_ty_param_bound(self, bounds)
98 fn visit_poly_trait_ref(&mut self, t: &PolyTraitRef, m: &TraitBoundModifier) {
100 walk_poly_trait_ref(self, t, m)
102 fn visit_variant_data(&mut self, s: &VariantData, _: Ident,
103 _: &Generics, _: NodeId, _: Span) {
105 walk_struct_def(self, s)
107 fn visit_struct_field(&mut self, s: &StructField) {
109 walk_struct_field(self, s)
111 fn visit_enum_def(&mut self, enum_definition: &EnumDef,
112 generics: &Generics, item_id: NodeId, _: Span) {
114 walk_enum_def(self, enum_definition, generics, item_id)
116 fn visit_variant(&mut self, v: &Variant, g: &Generics, item_id: NodeId) {
118 walk_variant(self, v, g, item_id)
120 fn visit_lifetime(&mut self, lifetime: &Lifetime) {
122 walk_lifetime(self, lifetime)
124 fn visit_lifetime_def(&mut self, lifetime: &LifetimeDef) {
126 walk_lifetime_def(self, lifetime)
128 fn visit_mac(&mut self, _mac: &Mac) {
132 fn visit_path(&mut self, path: &Path, _id: NodeId) {
134 walk_path(self, path)
136 fn visit_path_list_item(&mut self, prefix: &Path, item: &PathListItem) {
138 walk_path_list_item(self, prefix, item)
140 fn visit_path_parameters(&mut self, path_span: Span, path_parameters: &PathParameters) {
142 walk_path_parameters(self, path_span, path_parameters)
144 fn visit_assoc_type_binding(&mut self, type_binding: &TypeBinding) {
146 walk_assoc_type_binding(self, type_binding)
148 fn visit_attribute(&mut self, _attr: &Attribute) {
151 fn visit_macro_def(&mut self, macro_def: &MacroDef) {
153 walk_macro_def(self, macro_def)