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
|
use std::{sync::Arc, panic};
use parking_lot::Mutex;
use ra_db::{
BaseDatabase, FilePosition, FileId, CrateGraph, SourceRoot, SourceRootId, FilesDatabase, salsa,
};
use relative_path::RelativePathBuf;
use test_utils::{parse_fixture, CURSOR_MARKER, extract_offset};
use crate::{db, HirInterner};
pub const WORKSPACE: SourceRootId = SourceRootId(0);
#[salsa::database(
ra_db::FilesDatabaseStorage,
ra_db::SyntaxDatabaseStorage,
db::HirDatabaseStorage
)]
#[derive(Debug)]
pub(crate) struct MockDatabase {
events: Mutex<Option<Vec<salsa::Event<MockDatabase>>>>,
runtime: salsa::Runtime<MockDatabase>,
interner: Arc<HirInterner>,
file_counter: u32,
}
impl panic::RefUnwindSafe for MockDatabase {}
impl MockDatabase {
pub(crate) fn with_files(fixture: &str) -> (MockDatabase, SourceRoot) {
let (db, source_root, position) = MockDatabase::from_fixture(fixture);
assert!(position.is_none());
(db, source_root)
}
pub(crate) fn with_single_file(text: &str) -> (MockDatabase, SourceRoot, FileId) {
let mut db = MockDatabase::default();
let mut source_root = SourceRoot::default();
let file_id = db.add_file(WORKSPACE, &mut source_root, "/main.rs", text);
db.set_source_root(WORKSPACE, Arc::new(source_root.clone()));
(db, source_root, file_id)
}
pub(crate) fn with_position(fixture: &str) -> (MockDatabase, FilePosition) {
let (db, _, position) = MockDatabase::from_fixture(fixture);
let position = position.expect("expected a marker ( <|> )");
(db, position)
}
fn from_fixture(fixture: &str) -> (MockDatabase, SourceRoot, Option<FilePosition>) {
let mut db = MockDatabase::default();
let (source_root, pos) = db.add_fixture(WORKSPACE, fixture);
(db, source_root, pos)
}
pub fn add_fixture(
&mut self,
source_root_id: SourceRootId,
fixture: &str,
) -> (SourceRoot, Option<FilePosition>) {
let mut position = None;
let mut source_root = SourceRoot::default();
for entry in parse_fixture(fixture) {
if entry.text.contains(CURSOR_MARKER) {
assert!(
position.is_none(),
"only one marker (<|>) per fixture is allowed"
);
position = Some(self.add_file_with_position(
source_root_id,
&mut source_root,
&entry.meta,
&entry.text,
));
} else {
self.add_file(source_root_id, &mut source_root, &entry.meta, &entry.text);
}
}
self.set_source_root(source_root_id, Arc::new(source_root.clone()));
(source_root, position)
}
fn add_file(
&mut self,
source_root_id: SourceRootId,
source_root: &mut SourceRoot,
path: &str,
text: &str,
) -> FileId {
assert!(path.starts_with('/'));
let is_crate_root = path == "/lib.rs" || path == "/main.rs";
let path = RelativePathBuf::from_path(&path[1..]).unwrap();
let file_id = FileId(self.file_counter);
self.file_counter += 1;
let text = Arc::new(text.to_string());
self.set_file_text(file_id, text);
self.set_file_relative_path(file_id, path.clone());
self.set_file_source_root(file_id, source_root_id);
source_root.files.insert(path, file_id);
if is_crate_root {
let mut crate_graph = CrateGraph::default();
crate_graph.add_crate_root(file_id);
self.set_crate_graph(Arc::new(crate_graph));
}
file_id
}
fn add_file_with_position(
&mut self,
source_root_id: SourceRootId,
source_root: &mut SourceRoot,
path: &str,
text: &str,
) -> FilePosition {
let (offset, text) = extract_offset(text);
let file_id = self.add_file(source_root_id, source_root, path, &text);
FilePosition { file_id, offset }
}
}
impl salsa::Database for MockDatabase {
fn salsa_runtime(&self) -> &salsa::Runtime<MockDatabase> {
&self.runtime
}
fn salsa_event(&self, event: impl Fn() -> salsa::Event<MockDatabase>) {
let mut events = self.events.lock();
if let Some(events) = &mut *events {
events.push(event());
}
}
}
impl Default for MockDatabase {
fn default() -> MockDatabase {
let mut db = MockDatabase {
events: Default::default(),
runtime: salsa::Runtime::default(),
interner: Default::default(),
file_counter: 0,
};
db.set_crate_graph(Default::default());
db.set_local_roots(Default::default());
db.set_library_roots(Default::default());
db
}
}
impl salsa::ParallelDatabase for MockDatabase {
fn snapshot(&self) -> salsa::Snapshot<MockDatabase> {
salsa::Snapshot::new(MockDatabase {
events: Default::default(),
runtime: self.runtime.snapshot(self),
interner: Arc::clone(&self.interner),
file_counter: self.file_counter,
})
}
}
impl BaseDatabase for MockDatabase {}
impl AsRef<HirInterner> for MockDatabase {
fn as_ref(&self) -> &HirInterner {
&self.interner
}
}
impl MockDatabase {
pub(crate) fn log(&self, f: impl FnOnce()) -> Vec<salsa::Event<MockDatabase>> {
*self.events.lock() = Some(Vec::new());
f();
self.events.lock().take().unwrap()
}
pub(crate) fn log_executed(&self, f: impl FnOnce()) -> Vec<String> {
let events = self.log(f);
events
.into_iter()
.filter_map(|e| match e.kind {
// This pretty horrible, but `Debug` is the only way to inspect
// QueryDescriptor at the moment.
salsa::EventKind::WillExecute { database_key } => {
Some(format!("{:?}", database_key))
}
_ => None,
})
.collect()
}
}
|
