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
|
//! HIR (previsouly known as descriptors) provides a high-level OO acess to Rust
//! code.
//!
//! The principal difference between HIR and syntax trees is that HIR is bound
//! to a particular crate instance. That is, it has cfg flags and features
//! applied. So, there relation between syntax and HIR is many-to-one.
pub(crate) mod function;
pub(crate) mod module;
mod path;
use std::sync::Arc;
use ra_syntax::{
ast::{self, FnDefNode, AstNode},
TextRange, SyntaxNode,
};
use crate::{
FileId,
db::SyntaxDatabase,
hir::function::{resolve_local_name, FnId, FnScopes},
hir::module::{
ModuleId, ModuleTree, ModuleSource,
nameres::{ItemMap, InputModuleItems, FileItems}
},
input::SourceRootId,
loc2id::{IdDatabase, DefId, DefLoc},
syntax_ptr::LocalSyntaxPtr,
Cancelable,
};
pub(crate) use self::{
path::{Path, PathKind},
module::{ModuleDescriptor, nameres::FileItemId},
function::FunctionDescriptor,
};
salsa::query_group! {
pub(crate) trait HirDatabase: SyntaxDatabase + IdDatabase {
fn fn_scopes(fn_id: FnId) -> Arc<FnScopes> {
type FnScopesQuery;
use fn function::imp::fn_scopes;
}
fn _file_items(file_id: FileId) -> Arc<FileItems> {
type FileItemsQuery;
storage dependencies;
use fn module::nameres::file_items;
}
fn _file_item(file_id: FileId, file_item_id: FileItemId) -> SyntaxNode {
type FileItemQuery;
storage dependencies;
use fn module::nameres::file_item;
}
fn _input_module_items(source_root_id: SourceRootId, module_id: ModuleId) -> Cancelable<Arc<InputModuleItems>> {
type InputModuleItemsQuery;
use fn module::nameres::input_module_items;
}
fn _item_map(source_root_id: SourceRootId) -> Cancelable<Arc<ItemMap>> {
type ItemMapQuery;
use fn module::nameres::item_map;
}
fn _module_tree(source_root_id: SourceRootId) -> Cancelable<Arc<ModuleTree>> {
type ModuleTreeQuery;
use fn module::imp::module_tree;
}
fn _fn_syntax(fn_id: FnId) -> FnDefNode {
type FnSyntaxQuery;
// Don't retain syntax trees in memory
storage dependencies;
use fn function::imp::fn_syntax;
}
fn _submodules(source: ModuleSource) -> Cancelable<Arc<Vec<module::imp::Submodule>>> {
type SubmodulesQuery;
use fn module::imp::submodules;
}
}
}
pub(crate) enum Def {
Module(ModuleDescriptor),
Item,
}
impl DefId {
pub(crate) fn resolve(self, db: &impl HirDatabase) -> Cancelable<Def> {
let loc = db.id_maps().def_loc(self);
let res = match loc {
DefLoc::Module { id, source_root } => {
let descr = ModuleDescriptor::new(db, source_root, id)?;
Def::Module(descr)
}
DefLoc::Item { .. } => Def::Item,
};
Ok(res)
}
}
#[derive(Debug)]
pub struct ReferenceDescriptor {
pub range: TextRange,
pub name: String,
}
#[derive(Debug)]
pub struct DeclarationDescriptor<'a> {
pat: ast::BindPat<'a>,
pub range: TextRange,
}
impl<'a> DeclarationDescriptor<'a> {
pub fn new(pat: ast::BindPat) -> DeclarationDescriptor {
let range = pat.syntax().range();
DeclarationDescriptor { pat, range }
}
pub fn find_all_refs(&self) -> Vec<ReferenceDescriptor> {
let name_ptr = LocalSyntaxPtr::new(self.pat.syntax());
let fn_def = match self.pat.syntax().ancestors().find_map(ast::FnDef::cast) {
Some(def) => def,
None => return Default::default(),
};
let fn_scopes = FnScopes::new(fn_def);
let refs: Vec<_> = fn_def
.syntax()
.descendants()
.filter_map(ast::NameRef::cast)
.filter(|name_ref| match resolve_local_name(*name_ref, &fn_scopes) {
None => false,
Some(entry) => entry.ptr() == name_ptr,
})
.map(|name_ref| ReferenceDescriptor {
name: name_ref.syntax().text().to_string(),
range: name_ref.syntax().range(),
})
.collect();
refs
}
}
|
