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
|
//! `SourceBinder` should be the main entry point for getting info about source code.
//! It's main task is to map source syntax trees to hir-level IDs.
//!
//! It is intended to subsume `FromSource` and `SourceAnalyzer`.
use hir_def::{
child_by_source::ChildBySource,
dyn_map::DynMap,
keys::{self, Key},
resolver::{HasResolver, Resolver},
ConstId, DefWithBodyId, EnumId, EnumVariantId, FunctionId, ImplId, ModuleId, StaticId,
StructFieldId, StructId, TraitId, TypeAliasId, UnionId, VariantId,
};
use hir_expand::InFile;
use ra_prof::profile;
use ra_syntax::{ast, match_ast, AstNode, SyntaxNode, TextUnit};
use rustc_hash::FxHashMap;
use crate::{db::HirDatabase, ModuleSource, SourceAnalyzer};
pub struct SourceBinder<'a, DB> {
pub db: &'a DB,
child_by_source_cache: FxHashMap<ChildContainer, DynMap>,
}
impl<DB: HirDatabase> SourceBinder<'_, DB> {
pub fn new(db: &DB) -> SourceBinder<DB> {
SourceBinder { db, child_by_source_cache: FxHashMap::default() }
}
pub fn analyze(
&mut self,
src: InFile<&SyntaxNode>,
offset: Option<TextUnit>,
) -> SourceAnalyzer {
let _p = profile("SourceBinder::analyzer");
let container = match self.find_container(src) {
Some(it) => it,
None => return SourceAnalyzer::new_for_resolver(Resolver::default(), src),
};
let resolver = match container {
ChildContainer::DefWithBodyId(def) => {
return SourceAnalyzer::new_for_body(self.db, def, src, offset)
}
ChildContainer::TraitId(it) => it.resolver(self.db),
ChildContainer::ImplId(it) => it.resolver(self.db),
ChildContainer::ModuleId(it) => it.resolver(self.db),
ChildContainer::EnumId(it) => it.resolver(self.db),
ChildContainer::VariantId(it) => it.resolver(self.db),
};
SourceAnalyzer::new_for_resolver(resolver, src)
}
pub fn to_def<D, T>(&mut self, src: InFile<T>) -> Option<D>
where
D: From<T::ID>,
T: ToId,
{
let id: T::ID = self.to_id(src)?;
Some(id.into())
}
fn to_id<T: ToId>(&mut self, src: InFile<T>) -> Option<T::ID> {
let container = self.find_container(src.as_ref().map(|it| it.syntax()))?;
let db = self.db;
let dyn_map =
&*self.child_by_source_cache.entry(container).or_insert_with(|| match container {
ChildContainer::DefWithBodyId(it) => it.child_by_source(db),
ChildContainer::ModuleId(it) => it.child_by_source(db),
ChildContainer::TraitId(it) => it.child_by_source(db),
ChildContainer::ImplId(it) => it.child_by_source(db),
ChildContainer::EnumId(it) => it.child_by_source(db),
ChildContainer::VariantId(it) => it.child_by_source(db),
});
dyn_map[T::KEY].get(&src).copied()
}
fn find_container(&mut self, src: InFile<&SyntaxNode>) -> Option<ChildContainer> {
for container in src.cloned().ancestors_with_macros(self.db).skip(1) {
let res: ChildContainer = match_ast! {
match (container.value) {
ast::TraitDef(it) => {
let def: TraitId = self.to_id(container.with_value(it))?;
def.into()
},
ast::ImplBlock(it) => {
let def: ImplId = self.to_id(container.with_value(it))?;
def.into()
},
ast::FnDef(it) => {
let def: FunctionId = self.to_id(container.with_value(it))?;
DefWithBodyId::from(def).into()
},
ast::StaticDef(it) => {
let def: StaticId = self.to_id(container.with_value(it))?;
DefWithBodyId::from(def).into()
},
ast::ConstDef(it) => {
let def: ConstId = self.to_id(container.with_value(it))?;
DefWithBodyId::from(def).into()
},
ast::EnumDef(it) => {
let def: EnumId = self.to_id(container.with_value(it))?;
def.into()
},
ast::StructDef(it) => {
let def: StructId = self.to_id(container.with_value(it))?;
VariantId::from(def).into()
},
ast::UnionDef(it) => {
let def: UnionId = self.to_id(container.with_value(it))?;
VariantId::from(def).into()
},
// FIXME: handle out-of-line modules here
_ => { continue },
}
};
return Some(res);
}
let module_source = ModuleSource::from_child_node(self.db, src);
let c = crate::Module::from_definition(self.db, src.with_value(module_source))?;
Some(c.id.into())
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
enum ChildContainer {
DefWithBodyId(DefWithBodyId),
ModuleId(ModuleId),
TraitId(TraitId),
ImplId(ImplId),
EnumId(EnumId),
VariantId(VariantId),
}
impl_froms! {
ChildContainer:
DefWithBodyId,
ModuleId,
TraitId,
ImplId,
EnumId,
VariantId,
}
pub trait ToId: Sized + AstNode + 'static {
type ID: Sized + Copy + 'static;
const KEY: Key<Self, Self::ID>;
}
macro_rules! to_id_impls {
($(($id:ident, $ast:path, $key:path)),* ,) => {$(
impl ToId for $ast {
type ID = $id;
const KEY: Key<Self, Self::ID> = $key;
}
)*}
}
to_id_impls![
(StructId, ast::StructDef, keys::STRUCT),
(UnionId, ast::UnionDef, keys::UNION),
(EnumId, ast::EnumDef, keys::ENUM),
(TraitId, ast::TraitDef, keys::TRAIT),
(FunctionId, ast::FnDef, keys::FUNCTION),
(StaticId, ast::StaticDef, keys::STATIC),
(ConstId, ast::ConstDef, keys::CONST),
(TypeAliasId, ast::TypeAliasDef, keys::TYPE_ALIAS),
(ImplId, ast::ImplBlock, keys::IMPL),
(StructFieldId, ast::RecordFieldDef, keys::RECORD_FIELD),
(EnumVariantId, ast::EnumVariant, keys::ENUM_VARIANT),
];
|
