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
|
use std::sync::Arc;
use hir_expand::{
name::{self, AsName, Name},
AstId,
};
use ra_syntax::ast::{self, NameOwner, TypeAscriptionOwner};
use crate::{
db::DefDatabase2,
type_ref::{Mutability, TypeRef},
AssocItemId, AstItemDef, ConstLoc, ContainerId, FunctionId, FunctionLoc, HasSource, ImplId,
Intern, Lookup, TraitId, TypeAliasId, TypeAliasLoc,
};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct FunctionData {
pub name: Name,
pub params: Vec<TypeRef>,
pub ret_type: TypeRef,
/// True if the first param is `self`. This is relevant to decide whether this
/// can be called as a method.
pub has_self_param: bool,
}
impl FunctionData {
pub(crate) fn fn_data_query(db: &impl DefDatabase2, func: FunctionId) -> Arc<FunctionData> {
let src = func.lookup(db).source(db);
let name = src.value.name().map(|n| n.as_name()).unwrap_or_else(Name::missing);
let mut params = Vec::new();
let mut has_self_param = false;
if let Some(param_list) = src.value.param_list() {
if let Some(self_param) = param_list.self_param() {
let self_type = if let Some(type_ref) = self_param.ascribed_type() {
TypeRef::from_ast(type_ref)
} else {
let self_type = TypeRef::Path(name::SELF_TYPE.into());
match self_param.kind() {
ast::SelfParamKind::Owned => self_type,
ast::SelfParamKind::Ref => {
TypeRef::Reference(Box::new(self_type), Mutability::Shared)
}
ast::SelfParamKind::MutRef => {
TypeRef::Reference(Box::new(self_type), Mutability::Mut)
}
}
};
params.push(self_type);
has_self_param = true;
}
for param in param_list.params() {
let type_ref = TypeRef::from_ast_opt(param.ascribed_type());
params.push(type_ref);
}
}
let ret_type = if let Some(type_ref) = src.value.ret_type().and_then(|rt| rt.type_ref()) {
TypeRef::from_ast(type_ref)
} else {
TypeRef::unit()
};
let sig = FunctionData { name, params, ret_type, has_self_param };
Arc::new(sig)
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct TypeAliasData {
pub name: Name,
pub type_ref: Option<TypeRef>,
}
impl TypeAliasData {
pub(crate) fn type_alias_data_query(
db: &impl DefDatabase2,
typ: TypeAliasId,
) -> Arc<TypeAliasData> {
let node = typ.lookup(db).source(db).value;
let name = node.name().map_or_else(Name::missing, |n| n.as_name());
let type_ref = node.type_ref().map(TypeRef::from_ast);
Arc::new(TypeAliasData { name, type_ref })
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct TraitData {
pub name: Option<Name>,
pub items: Vec<AssocItemId>,
pub auto: bool,
}
impl TraitData {
pub(crate) fn trait_data_query(db: &impl DefDatabase2, tr: TraitId) -> Arc<TraitData> {
let src = tr.source(db);
let name = src.value.name().map(|n| n.as_name());
let auto = src.value.is_auto();
let ast_id_map = db.ast_id_map(src.file_id);
let items = if let Some(item_list) = src.value.item_list() {
item_list
.impl_items()
.map(|item_node| match item_node {
ast::ImplItem::FnDef(it) => FunctionLoc {
container: ContainerId::TraitId(tr),
ast_id: AstId::new(src.file_id, ast_id_map.ast_id(&it)),
}
.intern(db)
.into(),
ast::ImplItem::ConstDef(it) => ConstLoc {
container: ContainerId::TraitId(tr),
ast_id: AstId::new(src.file_id, ast_id_map.ast_id(&it)),
}
.intern(db)
.into(),
ast::ImplItem::TypeAliasDef(it) => TypeAliasLoc {
container: ContainerId::TraitId(tr),
ast_id: AstId::new(src.file_id, ast_id_map.ast_id(&it)),
}
.intern(db)
.into(),
})
.collect()
} else {
Vec::new()
};
Arc::new(TraitData { name, items, auto })
}
pub fn associated_types(&self) -> impl Iterator<Item = TypeAliasId> + '_ {
self.items.iter().filter_map(|item| match item {
AssocItemId::TypeAliasId(t) => Some(*t),
_ => None,
})
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ImplData {
target_trait: Option<TypeRef>,
target_type: TypeRef,
items: Vec<AssocItemId>,
negative: bool,
}
impl ImplData {
pub(crate) fn impl_data_query(db: &impl DefDatabase2, id: ImplId) -> Arc<ImplData> {
let src = id.source(db);
let items = db.ast_id_map(src.file_id);
let target_trait = src.value.target_trait().map(TypeRef::from_ast);
let target_type = TypeRef::from_ast_opt(src.value.target_type());
let negative = src.value.is_negative();
let items = if let Some(item_list) = src.value.item_list() {
item_list
.impl_items()
.map(|item_node| match item_node {
ast::ImplItem::FnDef(it) => {
let def = FunctionLoc {
container: ContainerId::ImplId(id),
ast_id: AstId::new(src.file_id, items.ast_id(&it)),
}
.intern(db);
def.into()
}
ast::ImplItem::ConstDef(it) => {
let def = ConstLoc {
container: ContainerId::ImplId(id),
ast_id: AstId::new(src.file_id, items.ast_id(&it)),
}
.intern(db);
def.into()
}
ast::ImplItem::TypeAliasDef(it) => {
let def = TypeAliasLoc {
container: ContainerId::ImplId(id),
ast_id: AstId::new(src.file_id, items.ast_id(&it)),
}
.intern(db);
def.into()
}
})
.collect()
} else {
Vec::new()
};
let res = ImplData { target_trait, target_type, items, negative };
Arc::new(res)
}
pub fn target_trait(&self) -> Option<&TypeRef> {
self.target_trait.as_ref()
}
pub fn target_type(&self) -> &TypeRef {
&self.target_type
}
pub fn items(&self) -> &[AssocItemId] {
&self.items
}
pub fn is_negative(&self) -> bool {
self.negative
}
}
|
