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
use data::config::Config;
use data::Analysis;
pub use data::{
CratePreludeData, Def, DefKind, GlobalCrateId as CrateId, Import, Ref, Relation, RelationKind,
SigElement, Signature, SpanData,
};
use listings::{DirectoryListing, ListingKind};
use {AnalysisLoader, Blacklist};
use std::collections::HashMap;
use std::fs::File;
use std::io::{self, Read};
use std::path::{Path, PathBuf};
use std::time::{Instant, SystemTime};
#[derive(Debug)]
pub struct Crate {
pub id: CrateId,
pub analysis: Analysis,
pub timestamp: SystemTime,
pub path: Option<PathBuf>,
pub path_rewrite: Option<PathBuf>,
}
impl Crate {
pub fn new(
analysis: Analysis,
timestamp: SystemTime,
path: Option<PathBuf>,
path_rewrite: Option<PathBuf>,
) -> Crate {
Crate {
id: analysis.prelude.as_ref().unwrap().crate_id.clone(),
analysis,
timestamp,
path,
path_rewrite,
}
}
}
pub fn read_analysis_from_files<L: AnalysisLoader>(
loader: &L,
crate_timestamps: HashMap<PathBuf, SystemTime>,
crate_blacklist: Blacklist,
) -> Vec<Crate> {
let mut result = vec![];
loader
.search_directories()
.iter()
.inspect(|dir| trace!("Considering analysis files at {}", dir.path.display()))
.filter_map(|dir| DirectoryListing::from_path(&dir.path).ok().map(|list| (dir, list)))
.for_each(|(dir, listing)| {
let t = Instant::now();
for l in listing.files {
info!("Considering {:?}", l);
if let ListingKind::File(ref time) = l.kind {
if ignore_data(&l.name, crate_blacklist) {
continue;
}
let path = dir.path.join(&l.name);
let is_fresh = crate_timestamps.get(&path).map_or(true, |t| time > t);
if is_fresh {
if let Some(analysis) = read_crate_data(&path) {
result.push(Crate::new(
analysis,
*time,
Some(path),
dir.prefix_rewrite.clone(),
));
};
}
}
}
let d = t.elapsed();
info!(
"reading {} crates from {} in {}.{:09}s",
result.len(),
dir.path.display(),
d.as_secs(),
d.subsec_nanos()
);
});
result
}
fn ignore_data(file_name: &str, crate_blacklist: Blacklist) -> bool {
crate_blacklist.iter().any(|name| file_name.starts_with(&format!("lib{}-", name)))
}
fn read_file_contents(path: &Path) -> io::Result<String> {
let mut file = File::open(&path)?;
let mut buf = String::new();
file.read_to_string(&mut buf)?;
Ok(buf)
}
fn read_crate_data(path: &Path) -> Option<Analysis> {
trace!("read_crate_data {:?}", path);
let t = Instant::now();
let buf = read_file_contents(path)
.or_else(|err| {
warn!("couldn't read file: {}", err);
Err(err)
})
.ok()?;
let s = decode_buf(&buf)
.or_else(|err| {
warn!("deserialisation error: {:?}", err);
json::parse(&buf)
.map(|parsed| {
if let json::JsonValue::Object(obj) = parsed {
let expected =
Some(json::JsonValue::from(Analysis::new(Config::default()).version));
let actual = obj.get("version").cloned();
if expected != actual {
warn!(
"Data file version mismatch; expected {:?} but got {:?}",
expected, actual
);
}
} else {
warn!("Data file didn't have a JSON object at the root");
}
})
.map_err(|err| {
warn!("Data file was not valid JSON: {:?}", err);
})
.ok();
Err(err)
})
.ok()?;
let d = t.elapsed();
info!("reading {:?} {}.{:09}s", path, d.as_secs(), d.subsec_nanos());
s
}
#[cfg(all(feature = "serialize-rustc", not(feature = "serialize-serde")))]
fn decode_buf(buf: &str) -> Result<Option<Analysis>, rustc_serialize::json::DecoderError> {
::rustc_serialize::json::decode(buf)
}
#[cfg(all(feature = "serialize-serde", not(feature = "serialize-rustc")))]
fn decode_buf(buf: &str) -> Result<Option<Analysis>, serde_json::Error> {
::serde_json::from_str(buf)
}
#[cfg(all(feature = "serialize-rustc", feature = "serialize-serde"))]
fn decode_buf(buf: &str) -> Result<Option<Analysis>, Box<dyn std::error::Error>> {
compile_error!("Features \"serialize-serde\" and \"serialize-rustc\" cannot both be enabled for this crate.")
}
#[cfg(not(any(feature = "serialize-serde", feature = "serialize-rustc")))]
fn decode_buf(buf: &str) -> Result<Option<Analysis>, Box<dyn std::error::Error>> {
compile_error!(
"Either feature \"serialize-serde\" or \"serialize-rustc\" must be enabled for this crate."
)
}
pub fn name_space_for_def_kind(dk: DefKind) -> char {
match dk {
DefKind::Enum
| DefKind::Struct
| DefKind::Union
| DefKind::Type
| DefKind::ExternType
| DefKind::Trait => 't',
DefKind::ForeignFunction
| DefKind::ForeignStatic
| DefKind::Function
| DefKind::Method
| DefKind::Mod
| DefKind::Local
| DefKind::Static
| DefKind::Const
| DefKind::Tuple
| DefKind::TupleVariant
| DefKind::StructVariant
| DefKind::Field => 'v',
DefKind::Macro => 'm',
}
}