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
|
//! Provides set of implementation for hir's objects that allows get back location in file.
use either::Either;
use hir_def::{
nameres::{ModuleOrigin, ModuleSource},
src::{HasChildSource, HasSource as _},
Lookup, VariantId,
};
use hir_expand::InFile;
use syntax::ast;
use crate::{
db::HirDatabase, Const, Enum, EnumVariant, Field, FieldSource, Function, ImplDef, MacroDef,
Module, Static, Struct, Trait, TypeAlias, TypeParam, Union,
};
pub trait HasSource {
type Ast;
fn source(self, db: &dyn HirDatabase) -> InFile<Self::Ast>;
}
/// NB: Module is !HasSource, because it has two source nodes at the same time:
/// definition and declaration.
impl Module {
/// Returns a node which defines this module. That is, a file or a `mod foo {}` with items.
pub fn definition_source(self, db: &dyn HirDatabase) -> InFile<ModuleSource> {
let def_map = db.crate_def_map(self.id.krate);
def_map[self.id.local_id].definition_source(db.upcast())
}
pub fn is_mod_rs(self, db: &dyn HirDatabase) -> bool {
let def_map = db.crate_def_map(self.id.krate);
match def_map[self.id.local_id].origin {
ModuleOrigin::File { is_mod_rs, .. } => is_mod_rs,
_ => false,
}
}
/// 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: &dyn HirDatabase) -> Option<InFile<ast::Module>> {
let def_map = db.crate_def_map(self.id.krate);
def_map[self.id.local_id].declaration_source(db.upcast())
}
}
impl HasSource for Field {
type Ast = FieldSource;
fn source(self, db: &dyn HirDatabase) -> InFile<FieldSource> {
let var = VariantId::from(self.parent);
let src = var.child_source(db.upcast());
src.map(|it| match it[self.id].clone() {
Either::Left(it) => FieldSource::Pos(it),
Either::Right(it) => FieldSource::Named(it),
})
}
}
impl HasSource for Struct {
type Ast = ast::Struct;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Struct> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for Union {
type Ast = ast::Union;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Union> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for Enum {
type Ast = ast::Enum;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Enum> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for EnumVariant {
type Ast = ast::Variant;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Variant> {
self.parent.id.child_source(db.upcast()).map(|map| map[self.id].clone())
}
}
impl HasSource for Function {
type Ast = ast::Fn;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Fn> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for Const {
type Ast = ast::Const;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Const> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for Static {
type Ast = ast::Static;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Static> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for Trait {
type Ast = ast::Trait;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Trait> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for TypeAlias {
type Ast = ast::TypeAlias;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::TypeAlias> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for MacroDef {
type Ast = ast::MacroCall;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::MacroCall> {
InFile {
file_id: self.id.ast_id.expect("MacroDef without ast_id").file_id,
value: self.id.ast_id.expect("MacroDef without ast_id").to_node(db.upcast()),
}
}
}
impl HasSource for ImplDef {
type Ast = ast::Impl;
fn source(self, db: &dyn HirDatabase) -> InFile<ast::Impl> {
self.id.lookup(db.upcast()).source(db.upcast())
}
}
impl HasSource for TypeParam {
type Ast = Either<ast::Trait, ast::TypeParam>;
fn source(self, db: &dyn HirDatabase) -> InFile<Self::Ast> {
let child_source = self.id.parent.child_source(db.upcast());
child_source.map(|it| it[self.id.local_id].clone())
}
}
|
