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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
use super::{ItemTree, ModItem, ModKind};
use crate::{db::DefDatabase, test_db::TestDB};
use hir_expand::db::AstDatabase;
use insta::assert_snapshot;
use ra_db::fixture::WithFixture;
use ra_syntax::{ast, AstNode};
use rustc_hash::FxHashSet;
use std::sync::Arc;
use stdx::format_to;
fn test_inner_items(ra_fixture: &str) {
let (db, file_id) = TestDB::with_single_file(ra_fixture);
let tree = db.item_tree(file_id.into());
let root = db.parse_or_expand(file_id.into()).unwrap();
let ast_id_map = db.ast_id_map(file_id.into());
// Traverse the item tree and collect all module/impl/trait-level items as AST nodes.
let mut outer_items = FxHashSet::default();
let mut worklist = tree.top_level_items().to_vec();
while let Some(item) = worklist.pop() {
let node: ast::ModuleItem = match item {
ModItem::Import(it) => tree.source(&db, it).into(),
ModItem::ExternCrate(it) => tree.source(&db, it).into(),
ModItem::Function(it) => tree.source(&db, it).into(),
ModItem::Struct(it) => tree.source(&db, it).into(),
ModItem::Union(it) => tree.source(&db, it).into(),
ModItem::Enum(it) => tree.source(&db, it).into(),
ModItem::Const(it) => tree.source(&db, it).into(),
ModItem::Static(it) => tree.source(&db, it).into(),
ModItem::TypeAlias(it) => tree.source(&db, it).into(),
ModItem::Mod(it) => {
if let ModKind::Inline { items } = &tree[it].kind {
worklist.extend(items);
}
tree.source(&db, it).into()
}
ModItem::Trait(it) => {
worklist.extend(tree[it].items.iter().map(|item| ModItem::from(*item)));
tree.source(&db, it).into()
}
ModItem::Impl(it) => {
worklist.extend(tree[it].items.iter().map(|item| ModItem::from(*item)));
tree.source(&db, it).into()
}
ModItem::MacroCall(_) => continue,
};
outer_items.insert(node);
}
// Now descend the root node and check that all `ast::ModuleItem`s are either recorded above, or
// registered as inner items.
for item in root.descendants().skip(1).filter_map(ast::ModuleItem::cast) {
if outer_items.contains(&item) {
continue;
}
let ast_id = ast_id_map.ast_id(&item);
assert!(!tree.inner_items(ast_id).is_empty());
}
}
fn item_tree(ra_fixture: &str) -> Arc<ItemTree> {
let (db, file_id) = TestDB::with_single_file(ra_fixture);
db.item_tree(file_id.into())
}
fn print_item_tree(ra_fixture: &str) -> String {
let tree = item_tree(ra_fixture);
let mut out = String::new();
format_to!(out, "inner attrs: {:?}\n\n", tree.top_level_attrs());
format_to!(out, "top-level items:\n");
for item in tree.top_level_items() {
fmt_mod_item(&mut out, &tree, *item);
format_to!(out, "\n");
}
if !tree.inner_items.is_empty() {
format_to!(out, "\ninner items:\n");
for (ast_id, items) in &tree.inner_items {
format_to!(out, "{:?}:\n", ast_id);
for inner in items {
format_to!(out, "- ");
fmt_mod_item(&mut out, &tree, *inner);
format_to!(out, "\n");
}
}
}
out
}
fn fmt_mod_item(out: &mut String, tree: &ItemTree, item: ModItem) {
match item {
ModItem::ExternCrate(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Import(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Function(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Struct(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Union(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Enum(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Const(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Static(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Trait(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Impl(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::TypeAlias(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::Mod(it) => {
format_to!(out, "{:?}", tree[it]);
}
ModItem::MacroCall(it) => {
format_to!(out, "{:?}", tree[it]);
}
}
}
#[test]
fn smoke() {
assert_snapshot!(print_item_tree(r"
#![attr]
use {a, b::*};
extern crate krate;
trait Tr<U> {
type AssocTy: Tr<()>;
const CONST: u8;
fn method(&self);
fn dfl_method(&mut self) {}
}
struct Struct0<T = ()>;
struct Struct1<T>(u8);
struct Struct2<T> {
fld: (T, ),
}
enum En {
Variant {
field: u8,
},
}
union Un {
fld: u16,
}
"), @r###"
inner attrs: Attrs { entries: Some([Attr { path: ModPath { kind: Plain, segments: [Name(Text("attr"))] }, input: None }]) }
top-level items:
Import { path: ModPath { kind: Plain, segments: [Name(Text("a"))] }, alias: None, visibility: Module(ModPath { kind: Super(0), segments: [] }), is_glob: false, is_prelude: false, ast_id: FileAstId::<ra_syntax::ast::generated::nodes::UseItem>(0) }
Import { path: ModPath { kind: Plain, segments: [Name(Text("b"))] }, alias: None, visibility: Module(ModPath { kind: Super(0), segments: [] }), is_glob: true, is_prelude: false, ast_id: FileAstId::<ra_syntax::ast::generated::nodes::UseItem>(0) }
ExternCrate { path: ModPath { kind: Plain, segments: [Name(Text("krate"))] }, alias: None, visibility: Module(ModPath { kind: Super(0), segments: [] }), is_macro_use: false, ast_id: FileAstId::<ra_syntax::ast::generated::nodes::ExternCrateItem>(1) }
Trait { name: Name(Text("Tr")), visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 2, data: [TypeParamData { name: Some(Name(Text("Self"))), default: None, provenance: TraitSelf }, TypeParamData { name: Some(Name(Text("U"))), default: None, provenance: TypeParamList }] }, where_predicates: [] }, auto: false, items: [TypeAlias(Idx::<TypeAlias>(0)), Const(Idx::<Const>(0)), Function(Idx::<Function>(0)), Function(Idx::<Function>(1))], ast_id: FileAstId::<ra_syntax::ast::generated::nodes::TraitDef>(2) }
Struct { name: Name(Text("Struct0")), attrs: Attrs { entries: None }, visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 1, data: [TypeParamData { name: Some(Name(Text("T"))), default: Some(Tuple([])), provenance: TypeParamList }] }, where_predicates: [] }, fields: Unit, ast_id: FileAstId::<ra_syntax::ast::generated::nodes::StructDef>(3), kind: Unit }
Struct { name: Name(Text("Struct1")), attrs: Attrs { entries: None }, visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 1, data: [TypeParamData { name: Some(Name(Text("T"))), default: None, provenance: TypeParamList }] }, where_predicates: [] }, fields: Tuple(Idx::<Field>(0)..Idx::<Field>(1)), ast_id: FileAstId::<ra_syntax::ast::generated::nodes::StructDef>(4), kind: Tuple }
Struct { name: Name(Text("Struct2")), attrs: Attrs { entries: None }, visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 1, data: [TypeParamData { name: Some(Name(Text("T"))), default: None, provenance: TypeParamList }] }, where_predicates: [] }, fields: Record(Idx::<Field>(1)..Idx::<Field>(2)), ast_id: FileAstId::<ra_syntax::ast::generated::nodes::StructDef>(5), kind: Record }
Enum { name: Name(Text("En")), attrs: Attrs { entries: None }, visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 0, data: [] }, where_predicates: [] }, variants: Idx::<Variant>(0)..Idx::<Variant>(1), ast_id: FileAstId::<ra_syntax::ast::generated::nodes::EnumDef>(6) }
Union { name: Name(Text("Un")), attrs: Attrs { entries: None }, visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 0, data: [] }, where_predicates: [] }, fields: Record(Idx::<Field>(3)..Idx::<Field>(4)), ast_id: FileAstId::<ra_syntax::ast::generated::nodes::UnionDef>(7) }
"###);
}
#[test]
fn simple_inner_items() {
let tree = print_item_tree(
r"
impl<T:A> D for Response<T> {
fn foo() {
end();
fn end<W: Write>() {
let _x: T = loop {};
}
}
}
",
);
assert_snapshot!(tree, @r###"
inner attrs: Attrs { entries: None }
top-level items:
Impl { generic_params: GenericParams { types: Arena { len: 1, data: [TypeParamData { name: Some(Name(Text("T"))), default: None, provenance: TypeParamList }] }, where_predicates: [WherePredicate { target: TypeRef(Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("T"))] }, generic_args: [None] })), bound: Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("A"))] }, generic_args: [None] }) }] }, target_trait: Some(Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("D"))] }, generic_args: [None] })), target_type: Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("Response"))] }, generic_args: [Some(GenericArgs { args: [Type(Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("T"))] }, generic_args: [None] }))], has_self_type: false, bindings: [] })] }), is_negative: false, items: [Function(Idx::<Function>(1))], ast_id: FileAstId::<ra_syntax::ast::generated::nodes::ImplDef>(0) }
inner items:
FileAstId::<ra_syntax::ast::generated::nodes::ModuleItem>(2):
- Function { name: Name(Text("end")), attrs: Attrs { entries: None }, visibility: Module(ModPath { kind: Super(0), segments: [] }), generic_params: GenericParams { types: Arena { len: 1, data: [TypeParamData { name: Some(Name(Text("W"))), default: None, provenance: TypeParamList }] }, where_predicates: [WherePredicate { target: TypeRef(Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("W"))] }, generic_args: [None] })), bound: Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("Write"))] }, generic_args: [None] }) }] }, has_self_param: false, is_unsafe: false, params: [], ret_type: Tuple([]), ast_id: FileAstId::<ra_syntax::ast::generated::nodes::FnDef>(2) }
"###);
}
#[test]
fn cursed_inner_items() {
test_inner_items(
r"
struct S<T: Trait = [u8; { fn f() {} 0 }]>(T);
enum En {
Var1 {
t: [(); { trait Inner {} 0 }],
},
Var2([u16; { enum Inner {} 0 }]),
}
type Ty = [En; { struct Inner; 0 }];
impl En {
fn assoc() {
trait InnerTrait {}
struct InnerStruct {}
impl InnerTrait for InnerStruct {}
}
}
",
);
}
#[test]
fn assoc_item_macros() {
let tree = print_item_tree(
r"
impl S {
items!();
}
",
);
assert_snapshot!(tree, @r###"
inner attrs: Attrs { entries: None }
top-level items:
Impl { generic_params: GenericParams { types: Arena { len: 0, data: [] }, where_predicates: [] }, target_trait: None, target_type: Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("S"))] }, generic_args: [None] }), is_negative: false, items: [MacroCall(Idx::<MacroCall>(0))], ast_id: FileAstId::<ra_syntax::ast::generated::nodes::ImplDef>(0) }
"###);
}
|
