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
|
//! FIXME: write short doc here
use std::str::FromStr;
use std::sync::Arc;
use ra_cfg::CfgOptions;
use rustc_hash::FxHashMap;
use test_utils::{extract_offset, parse_fixture, CURSOR_MARKER};
use crate::{
CrateGraph, CrateId, Edition, FileId, FilePosition, RelativePathBuf, SourceDatabaseExt,
SourceRoot, SourceRootId,
};
pub const WORKSPACE: SourceRootId = SourceRootId(0);
pub trait WithFixture: Default + SourceDatabaseExt + 'static {
fn with_single_file(text: &str) -> (Self, FileId) {
let mut db = Self::default();
let file_id = with_single_file(&mut db, text);
(db, file_id)
}
fn with_files(fixture: &str) -> Self {
let mut db = Self::default();
let pos = with_files(&mut db, fixture);
assert!(pos.is_none());
db
}
fn with_position(fixture: &str) -> (Self, FilePosition) {
let mut db = Self::default();
let pos = with_files(&mut db, fixture);
(db, pos.unwrap())
}
fn test_crate(&self) -> CrateId {
let crate_graph = self.crate_graph();
let mut it = crate_graph.iter();
let res = it.next().unwrap();
assert!(it.next().is_none());
res
}
}
impl<DB: SourceDatabaseExt + Default + 'static> WithFixture for DB {}
fn with_single_file(db: &mut dyn SourceDatabaseExt, text: &str) -> FileId {
let file_id = FileId(0);
let rel_path: RelativePathBuf = "/main.rs".into();
let mut source_root = SourceRoot::default();
source_root.insert_file(rel_path.clone(), file_id);
let mut crate_graph = CrateGraph::default();
crate_graph.add_crate_root(file_id, Edition::Edition2018, CfgOptions::default());
db.set_file_text(file_id, Arc::new(text.to_string()));
db.set_file_relative_path(file_id, rel_path);
db.set_file_source_root(file_id, WORKSPACE);
db.set_source_root(WORKSPACE, Arc::new(source_root));
db.set_crate_graph(Arc::new(crate_graph));
file_id
}
fn with_files(db: &mut dyn SourceDatabaseExt, fixture: &str) -> Option<FilePosition> {
let fixture = parse_fixture(fixture);
let mut crate_graph = CrateGraph::default();
let mut crates = FxHashMap::default();
let mut crate_deps = Vec::new();
let mut default_crate_root: Option<FileId> = None;
let mut source_root = SourceRoot::default();
let mut source_root_id = WORKSPACE;
let mut source_root_prefix: RelativePathBuf = "/".into();
let mut file_id = FileId(0);
let mut file_position = None;
for entry in fixture.iter() {
let meta = match parse_meta(&entry.meta) {
ParsedMeta::Root { path } => {
let source_root = std::mem::replace(&mut source_root, SourceRoot::default());
db.set_source_root(source_root_id, Arc::new(source_root));
source_root_id.0 += 1;
source_root_prefix = path;
continue;
}
ParsedMeta::File(it) => it,
};
assert!(meta.path.starts_with(&source_root_prefix));
if let Some(krate) = meta.krate {
let crate_id = crate_graph.add_crate_root(file_id, meta.edition, meta.cfg);
let prev = crates.insert(krate.clone(), crate_id);
assert!(prev.is_none());
for dep in meta.deps {
crate_deps.push((krate.clone(), dep))
}
} else if meta.path == "/main.rs" || meta.path == "/lib.rs" {
assert!(default_crate_root.is_none());
default_crate_root = Some(file_id);
}
let text = if entry.text.contains(CURSOR_MARKER) {
let (offset, text) = extract_offset(&entry.text);
assert!(file_position.is_none());
file_position = Some(FilePosition { file_id, offset });
text.to_string()
} else {
entry.text.to_string()
};
db.set_file_text(file_id, Arc::new(text));
db.set_file_relative_path(file_id, meta.path.clone());
db.set_file_source_root(file_id, source_root_id);
source_root.insert_file(meta.path, file_id);
file_id.0 += 1;
}
if crates.is_empty() {
let crate_root = default_crate_root.unwrap();
crate_graph.add_crate_root(crate_root, Edition::Edition2018, CfgOptions::default());
} else {
for (from, to) in crate_deps {
let from_id = crates[&from];
let to_id = crates[&to];
crate_graph.add_dep(from_id, to.into(), to_id).unwrap();
}
}
db.set_source_root(source_root_id, Arc::new(source_root));
db.set_crate_graph(Arc::new(crate_graph));
file_position
}
enum ParsedMeta {
Root { path: RelativePathBuf },
File(FileMeta),
}
struct FileMeta {
path: RelativePathBuf,
krate: Option<String>,
deps: Vec<String>,
cfg: CfgOptions,
edition: Edition,
}
//- /lib.rs crate:foo deps:bar,baz
fn parse_meta(meta: &str) -> ParsedMeta {
let components = meta.split_ascii_whitespace().collect::<Vec<_>>();
if components[0] == "root" {
let path: RelativePathBuf = components[1].into();
assert!(path.starts_with("/") && path.ends_with("/"));
return ParsedMeta::Root { path };
}
let path: RelativePathBuf = components[0].into();
assert!(path.starts_with("/"));
let mut krate = None;
let mut deps = Vec::new();
let mut edition = Edition::Edition2018;
let mut cfg = CfgOptions::default();
for component in components[1..].iter() {
let (key, value) = split1(component, ':').unwrap();
match key {
"crate" => krate = Some(value.to_string()),
"deps" => deps = value.split(',').map(|it| it.to_string()).collect(),
"edition" => edition = Edition::from_str(&value).unwrap(),
"cfg" => {
for key in value.split(',') {
match split1(key, '=') {
None => cfg.insert_atom(key.into()),
Some((k, v)) => cfg.insert_key_value(k.into(), v.into()),
}
}
}
_ => panic!("bad component: {:?}", component),
}
}
ParsedMeta::File(FileMeta { path, krate, deps, edition, cfg })
}
fn split1(haystack: &str, delim: char) -> Option<(&str, &str)> {
let idx = haystack.find(delim)?;
Some((&haystack[..idx], &haystack[idx + delim.len_utf8()..]))
}
|
