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
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
|
use std::sync::Arc;
use relative_path::RelativePathBuf;
use ra_db::{CrateId, Cancelable, FileId};
use ra_syntax::{ast, TreeArc, SyntaxNode, AstNode};
use crate::{
Name, DefId, Path, PerNs, ScopesWithSyntaxMapping, Ty, HirFileId,
type_ref::TypeRef,
nameres::ModuleScope,
db::HirDatabase,
expr::BodySyntaxMapping,
ty::InferenceResult,
adt::VariantData,
};
/// hir::Crate describes a single crate. It's the main interface with which
/// a crate's dependencies interact. Mostly, it should be just a proxy for the
/// root module.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Crate {
pub(crate) crate_id: CrateId,
}
#[derive(Debug)]
pub struct CrateDependency {
pub krate: Crate,
pub name: Name,
}
impl Crate {
pub fn crate_id(&self) -> CrateId {
self.crate_id
}
pub fn dependencies(&self, db: &impl HirDatabase) -> Cancelable<Vec<CrateDependency>> {
Ok(self.dependencies_impl(db))
}
pub fn root_module(&self, db: &impl HirDatabase) -> Cancelable<Option<Module>> {
self.root_module_impl(db)
}
}
pub enum Def {
Module(Module),
Struct(Struct),
Enum(Enum),
EnumVariant(EnumVariant),
Function(Function),
Item,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Module {
pub(crate) def_id: DefId,
}
pub enum ModuleSource {
SourceFile(TreeArc<ast::SourceFile>),
Module(TreeArc<ast::Module>),
}
#[derive(Clone, Debug, Hash, PartialEq, Eq)]
pub enum Problem {
UnresolvedModule {
candidate: RelativePathBuf,
},
NotDirOwner {
move_to: RelativePathBuf,
candidate: RelativePathBuf,
},
}
impl Module {
/// Name of this module.
pub fn name(&self, db: &impl HirDatabase) -> Cancelable<Option<Name>> {
self.name_impl(db)
}
/// Returns a node which defines this module. That is, a file or a `mod foo {}` with items.
pub fn definition_source(&self, db: &impl HirDatabase) -> Cancelable<(FileId, ModuleSource)> {
self.definition_source_impl(db)
}
/// Returns a node which declares this module, either a `mod foo;` or a `mod foo {}`.
/// `None` for the crate root.
pub fn declaration_source(
&self,
db: &impl HirDatabase,
) -> Cancelable<Option<(FileId, TreeArc<ast::Module>)>> {
self.declaration_source_impl(db)
}
/// Returns the crate this module is part of.
pub fn krate(&self, db: &impl HirDatabase) -> Cancelable<Option<Crate>> {
self.krate_impl(db)
}
/// Topmost parent of this module. Every module has a `crate_root`, but some
/// might be missing `krate`. This can happen if a module's file is not included
/// in the module tree of any target in Cargo.toml.
pub fn crate_root(&self, db: &impl HirDatabase) -> Cancelable<Module> {
self.crate_root_impl(db)
}
/// Finds a child module with the specified name.
pub fn child(&self, db: &impl HirDatabase, name: &Name) -> Cancelable<Option<Module>> {
self.child_impl(db, name)
}
/// Finds a parent module.
pub fn parent(&self, db: &impl HirDatabase) -> Cancelable<Option<Module>> {
self.parent_impl(db)
}
pub fn path_to_root(&self, db: &impl HirDatabase) -> Cancelable<Vec<Module>> {
let mut res = vec![self.clone()];
let mut curr = self.clone();
while let Some(next) = curr.parent(db)? {
res.push(next.clone());
curr = next
}
Ok(res)
}
/// Returns a `ModuleScope`: a set of items, visible in this module.
pub fn scope(&self, db: &impl HirDatabase) -> Cancelable<ModuleScope> {
self.scope_impl(db)
}
pub fn resolve_path(&self, db: &impl HirDatabase, path: &Path) -> Cancelable<PerNs<DefId>> {
self.resolve_path_impl(db, path)
}
pub fn problems(
&self,
db: &impl HirDatabase,
) -> Cancelable<Vec<(TreeArc<SyntaxNode>, Problem)>> {
self.problems_impl(db)
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct StructField {
struct_: Struct,
name: Name,
}
impl StructField {
pub fn name(&self) -> &Name {
&self.name
}
pub fn ty(&self, db: &impl HirDatabase) -> Cancelable<Option<Ty>> {
db.type_for_field(self.struct_.def_id, self.name.clone())
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Struct {
pub(crate) def_id: DefId,
}
impl Struct {
pub fn def_id(&self) -> DefId {
self.def_id
}
pub fn name(&self, db: &impl HirDatabase) -> Cancelable<Option<Name>> {
Ok(db.struct_data(self.def_id)?.name.clone())
}
pub fn fields(&self, db: &impl HirDatabase) -> Cancelable<Vec<StructField>> {
let res = db
.struct_data(self.def_id)?
.variant_data
.fields()
.iter()
.map(|it| StructField {
struct_: self.clone(),
name: it.name.clone(),
})
.collect();
Ok(res)
}
pub fn source(
&self,
db: &impl HirDatabase,
) -> Cancelable<(HirFileId, TreeArc<ast::StructDef>)> {
let (file_id, syntax) = self.def_id.source(db);
Ok((
file_id,
ast::StructDef::cast(&syntax)
.expect("struct def should point to StructDef node")
.to_owned(),
))
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Enum {
pub(crate) def_id: DefId,
}
impl Enum {
pub(crate) fn new(def_id: DefId) -> Self {
Enum { def_id }
}
pub fn def_id(&self) -> DefId {
self.def_id
}
pub fn name(&self, db: &impl HirDatabase) -> Cancelable<Option<Name>> {
Ok(db.enum_data(self.def_id)?.name.clone())
}
pub fn variants(&self, db: &impl HirDatabase) -> Cancelable<Vec<(Name, EnumVariant)>> {
Ok(db.enum_data(self.def_id)?.variants.clone())
}
pub fn source(&self, db: &impl HirDatabase) -> Cancelable<(HirFileId, TreeArc<ast::EnumDef>)> {
let (file_id, syntax) = self.def_id.source(db);
Ok((
file_id,
ast::EnumDef::cast(&syntax)
.expect("enum def should point to EnumDef node")
.to_owned(),
))
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct EnumVariant {
pub(crate) def_id: DefId,
}
impl EnumVariant {
pub(crate) fn new(def_id: DefId) -> Self {
EnumVariant { def_id }
}
pub fn def_id(&self) -> DefId {
self.def_id
}
pub fn parent_enum(&self, db: &impl HirDatabase) -> Cancelable<Enum> {
Ok(db.enum_variant_data(self.def_id)?.parent_enum.clone())
}
pub fn name(&self, db: &impl HirDatabase) -> Cancelable<Option<Name>> {
Ok(db.enum_variant_data(self.def_id)?.name.clone())
}
pub fn variant_data(&self, db: &impl HirDatabase) -> Cancelable<Arc<VariantData>> {
Ok(db.enum_variant_data(self.def_id)?.variant_data.clone())
}
pub fn source(
&self,
db: &impl HirDatabase,
) -> Cancelable<(HirFileId, TreeArc<ast::EnumVariant>)> {
let (file_id, syntax) = self.def_id.source(db);
Ok((
file_id,
ast::EnumVariant::cast(&syntax)
.expect("variant def should point to EnumVariant node")
.to_owned(),
))
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Function {
pub(crate) def_id: DefId,
}
pub use crate::code_model_impl::function::ScopeEntryWithSyntax;
/// The declared signature of a function.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct FnSignature {
pub(crate) name: Name,
pub(crate) args: Vec<TypeRef>,
pub(crate) ret_type: TypeRef,
}
impl FnSignature {
pub fn name(&self) -> &Name {
&self.name
}
pub fn args(&self) -> &[TypeRef] {
&self.args
}
pub fn ret_type(&self) -> &TypeRef {
&self.ret_type
}
}
impl Function {
pub fn def_id(&self) -> DefId {
self.def_id
}
pub fn source(&self, db: &impl HirDatabase) -> Cancelable<(HirFileId, TreeArc<ast::FnDef>)> {
Ok(self.source_impl(db))
}
pub fn body_syntax_mapping(&self, db: &impl HirDatabase) -> Cancelable<Arc<BodySyntaxMapping>> {
db.body_syntax_mapping(self.def_id)
}
pub fn scopes(&self, db: &impl HirDatabase) -> Cancelable<ScopesWithSyntaxMapping> {
let scopes = db.fn_scopes(self.def_id)?;
let syntax_mapping = db.body_syntax_mapping(self.def_id)?;
Ok(ScopesWithSyntaxMapping {
scopes,
syntax_mapping,
})
}
pub fn signature(&self, db: &impl HirDatabase) -> Arc<FnSignature> {
db.fn_signature(self.def_id)
}
pub fn infer(&self, db: &impl HirDatabase) -> Cancelable<Arc<InferenceResult>> {
db.infer(self.def_id)
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Const {
pub(crate) def_id: DefId,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Static {
pub(crate) def_id: DefId,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Trait {
pub(crate) def_id: DefId,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Type {
pub(crate) def_id: DefId,
}
|