1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
// Simply gives a rought count of the number of nodes in an AST.

use crate::visit::*;
use crate::ast::*;
use syntax_pos::Span;

pub struct NodeCounter {
    pub count: usize,
}

impl NodeCounter {
    pub fn new() -> NodeCounter {
        NodeCounter {
            count: 0,
        }
    }
}

impl<'ast> Visitor<'ast> for NodeCounter {
    fn visit_ident(&mut self, ident: Ident) {
        self.count += 1;
        walk_ident(self, ident);
    }
    fn visit_mod(&mut self, m: &Mod, _s: Span, _a: &[Attribute], _n: NodeId) {
        self.count += 1;
        walk_mod(self, m)
    }
    fn visit_foreign_item(&mut self, i: &ForeignItem) {
        self.count += 1;
        walk_foreign_item(self, i)
    }
    fn visit_item(&mut self, i: &Item) {
        self.count += 1;
        walk_item(self, i)
    }
    fn visit_local(&mut self, l: &Local) {
        self.count += 1;
        walk_local(self, l)
    }
    fn visit_block(&mut self, b: &Block) {
        self.count += 1;
        walk_block(self, b)
    }
    fn visit_stmt(&mut self, s: &Stmt) {
        self.count += 1;
        walk_stmt(self, s)
    }
    fn visit_arm(&mut self, a: &Arm) {
        self.count += 1;
        walk_arm(self, a)
    }
    fn visit_pat(&mut self, p: &Pat) {
        self.count += 1;
        walk_pat(self, p)
    }
    fn visit_expr(&mut self, ex: &Expr) {
        self.count += 1;
        walk_expr(self, ex)
    }
    fn visit_ty(&mut self, t: &Ty) {
        self.count += 1;
        walk_ty(self, t)
    }
    fn visit_generic_param(&mut self, param: &GenericParam) {
        self.count += 1;
        walk_generic_param(self, param)
    }
    fn visit_generics(&mut self, g: &Generics) {
        self.count += 1;
        walk_generics(self, g)
    }
    fn visit_fn(&mut self, fk: FnKind<'_>, fd: &FnDecl, s: Span, _: NodeId) {
        self.count += 1;
        walk_fn(self, fk, fd, s)
    }
    fn visit_trait_item(&mut self, ti: &TraitItem) {
        self.count += 1;
        walk_trait_item(self, ti)
    }
    fn visit_impl_item(&mut self, ii: &ImplItem) {
        self.count += 1;
        walk_impl_item(self, ii)
    }
    fn visit_trait_ref(&mut self, t: &TraitRef) {
        self.count += 1;
        walk_trait_ref(self, t)
    }
    fn visit_param_bound(&mut self, bounds: &GenericBound) {
        self.count += 1;
        walk_param_bound(self, bounds)
    }
    fn visit_poly_trait_ref(&mut self, t: &PolyTraitRef, m: &TraitBoundModifier) {
        self.count += 1;
        walk_poly_trait_ref(self, t, m)
    }
    fn visit_variant_data(&mut self, s: &VariantData, _: Ident,
                          _: &Generics, _: NodeId, _: Span) {
        self.count += 1;
        walk_struct_def(self, s)
    }
    fn visit_struct_field(&mut self, s: &StructField) {
        self.count += 1;
        walk_struct_field(self, s)
    }
    fn visit_enum_def(&mut self, enum_definition: &EnumDef,
                      generics: &Generics, item_id: NodeId, _: Span) {
        self.count += 1;
        walk_enum_def(self, enum_definition, generics, item_id)
    }
    fn visit_variant(&mut self, v: &Variant, g: &Generics, item_id: NodeId) {
        self.count += 1;
        walk_variant(self, v, g, item_id)
    }
    fn visit_lifetime(&mut self, lifetime: &Lifetime) {
        self.count += 1;
        walk_lifetime(self, lifetime)
    }
    fn visit_mac(&mut self, _mac: &Mac) {
        self.count += 1;
        walk_mac(self, _mac)
    }
    fn visit_path(&mut self, path: &Path, _id: NodeId) {
        self.count += 1;
        walk_path(self, path)
    }
    fn visit_use_tree(&mut self, use_tree: &UseTree, id: NodeId, _nested: bool) {
        self.count += 1;
        walk_use_tree(self, use_tree, id)
    }
    fn visit_generic_args(&mut self, path_span: Span, generic_args: &GenericArgs) {
        self.count += 1;
        walk_generic_args(self, path_span, generic_args)
    }
    fn visit_assoc_type_binding(&mut self, type_binding: &TypeBinding) {
        self.count += 1;
        walk_assoc_type_binding(self, type_binding)
    }
    fn visit_attribute(&mut self, _attr: &Attribute) {
        self.count += 1;
    }
}