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
207
208
209
210
211
212
213
214
215
216
217
|
use std::sync::Arc;
use {
FileId,
db::{
Query, Eval, QueryCtx, FileSyntax, Files,
Cache, QueryCache,
},
module_map::resolve_submodule,
};
pub(crate) enum ModuleDescr {}
impl Query for ModuleDescr {
const ID: u32 = 30;
type Params = FileId;
type Output = Arc<descr::ModuleDescr>;
}
enum ResolveSubmodule {}
impl Query for ResolveSubmodule {
const ID: u32 = 31;
type Params = (FileId, descr::Submodule);
type Output = Arc<Vec<FileId>>;
}
enum ParentModule {}
impl Query for ParentModule {
const ID: u32 = 40;
type Params = FileId;
type Output = Arc<Vec<FileId>>;
}
impl Eval for ModuleDescr {
fn cache(cache: &mut Cache) -> Option<&mut QueryCache<Self>> {
Some(&mut cache.module_descr)
}
fn eval(ctx: &QueryCtx, file_id: &FileId) -> Arc<descr::ModuleDescr> {
let file = ctx.get::<FileSyntax>(file_id);
Arc::new(descr::ModuleDescr::new(file.ast()))
}
}
impl Eval for ResolveSubmodule {
fn eval(ctx: &QueryCtx, &(file_id, ref submodule): &(FileId, descr::Submodule)) -> Arc<Vec<FileId>> {
let files = ctx.get::<Files>(&());
let res = resolve_submodule(file_id, &submodule.name, &files.file_resolver()).0;
Arc::new(res)
}
}
impl Eval for ParentModule {
fn eval(ctx: &QueryCtx, file_id: &FileId) -> Arc<Vec<FileId>> {
let files = ctx.get::<Files>(&());
let res = files.iter()
.map(|parent_id| (parent_id, ctx.get::<ModuleDescr>(&parent_id)))
.filter(|(parent_id, descr)| {
descr.submodules.iter()
.any(|subm| {
ctx.get::<ResolveSubmodule>(&(*parent_id, subm.clone()))
.iter()
.any(|it| it == file_id)
})
})
.map(|(id, _)| id)
.collect();
Arc::new(res)
}
}
mod descr {
use libsyntax2::{
SmolStr,
ast::{self, NameOwner},
};
#[derive(Debug)]
pub struct ModuleDescr {
pub submodules: Vec<Submodule>
}
impl ModuleDescr {
pub fn new(root: ast::Root) -> ModuleDescr {
let submodules = root
.modules()
.filter_map(|module| {
let name = module.name()?.text();
if !module.has_semi() {
return None;
}
Some(Submodule { name })
}).collect();
ModuleDescr { submodules } }
}
#[derive(Clone, Hash, PartialEq, Eq, Debug)]
pub struct Submodule {
pub name: SmolStr,
}
}
#[cfg(test)]
mod tests {
use std::collections::HashMap;
use im;
use relative_path::{RelativePath, RelativePathBuf};
use {
db::{Query, DbHost, TraceEventKind},
imp::FileResolverImp,
FileId, FileResolver,
};
use super::*;
#[derive(Debug)]
struct FileMap(im::HashMap<FileId, RelativePathBuf>);
impl FileResolver for FileMap {
fn file_stem(&self, file_id: FileId) -> String {
self.0[&file_id].file_stem().unwrap().to_string()
}
fn resolve(&self, file_id: FileId, rel: &RelativePath) -> Option<FileId> {
let path = self.0[&file_id].join(rel).normalize();
self.0.iter()
.filter_map(|&(id, ref p)| Some(id).filter(|_| p == &path))
.next()
}
}
struct Fixture {
next_file_id: u32,
fm: im::HashMap<FileId, RelativePathBuf>,
db: DbHost,
}
impl Fixture {
fn new() -> Fixture {
Fixture {
next_file_id: 1,
fm: im::HashMap::new(),
db: DbHost::new(),
}
}
fn add_file(&mut self, path: &str, text: &str) -> FileId {
assert!(path.starts_with("/"));
let file_id = FileId(self.next_file_id);
self.next_file_id += 1;
self.fm.insert(file_id, RelativePathBuf::from(&path[1..]));
self.db.change_file(file_id, Some(text.to_string()));
self.db.set_file_resolver(FileResolverImp::new(
Arc::new(FileMap(self.fm.clone()))
));
file_id
}
fn remove_file(&mut self, file_id: FileId) {
self.fm.remove(&file_id);
self.db.change_file(file_id, None);
self.db.set_file_resolver(FileResolverImp::new(
Arc::new(FileMap(self.fm.clone()))
))
}
fn change_file(&mut self, file_id: FileId, new_text: &str) {
self.db.change_file(file_id, Some(new_text.to_string()));
}
fn check_parent_modules(
&self,
file_id: FileId,
expected: &[FileId],
queries: &[(u32, u64)]
) {
let ctx = self.db.query_ctx();
let actual = ctx.get::<ParentModule>(&file_id);
assert_eq!(actual.as_slice(), expected);
let mut counts = HashMap::new();
ctx.trace.borrow().iter()
.filter(|event| event.kind == TraceEventKind::Start)
.for_each(|event| *counts.entry(event.query_id).or_insert(0) += 1);
for &(query_id, expected_count) in queries.iter() {
let actual_count = *counts.get(&query_id).unwrap_or(&0);
assert_eq!(
actual_count,
expected_count,
"counts for {} differ",
query_id,
)
}
}
}
#[test]
fn test_parent_module() {
let mut f = Fixture::new();
let foo = f.add_file("/foo.rs", "");
f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 1)]);
let lib = f.add_file("/lib.rs", "mod foo;");
f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 2)]);
f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 0)]);
f.change_file(lib, "");
f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 2)]);
f.change_file(lib, "mod foo;");
f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 2)]);
f.change_file(lib, "mod bar;");
f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 2)]);
f.change_file(lib, "mod foo;");
f.check_parent_modules(foo, &[lib], &[(ModuleDescr::ID, 2)]);
f.remove_file(lib);
f.check_parent_modules(foo, &[], &[(ModuleDescr::ID, 1)]);
}
}
|
