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
|
use serde_derive::{ Serialize, Deserialize };
use std::path::{ PathBuf, Path };
use toml::de;
use log::{ error, trace };
use std::io::prelude::*;
use nix::sys::wait::WaitStatus;
type Error = std::io::Error;
use std::io::ErrorKind;
use crate::backends::{ Backend, PythonBackend, ClangBackend, RunError };
#[derive(Debug, Serialize, Deserialize, Default)]
pub struct Conf {
#[serde(skip)]
path: Option<PathBuf>,
#[serde(default)]
python: PythonBackend,
#[serde(default)]
clang: ClangBackend
}
impl Conf {
pub fn get_template(&self, fname: &Path) -> &str {
self.get_backend(fname)
.and_then(|backend| backend.get_template())
.unwrap_or("")
}
pub fn get_backend(&self, fname: &Path) -> Option<Box<&dyn Backend>> {
let ext = fname.extension()
.and_then(|ext| ext.to_str())
.unwrap_or("");
match ext {
"py" => Some(Box::new(&self.python)),
"cc" | "cpp" | "cxx" => Some(Box::new(&self.clang)),
_ => None
}
}
pub fn run(
&self,
fname: &Path,
show_time: bool,
show_mem: bool
) -> Result<(), RunError> {
match self.get_backend(fname) {
Some(backend) => backend.run(fname).map(|info| {
match info.status {
WaitStatus::Exited(_pid, ret) => match ret {
0 => {
if show_time {
println!("wall time: {:?}", info.wall_time);
}
if show_mem {
println!("rss: {}K", info.usage.ru_maxrss);
}
},
_ => error!("process exited with {}", ret)
},
WaitStatus::Signaled(pid, sig, coredump) => {
error!(
"process killed by {} {}. was {}",
sig,
if coredump {"(core dumped)"} else {""},
pid
);
},
_ => error!("process signaled, but not exited")
}
}),
None => Err(Error::new(ErrorKind::InvalidData, "Backend not found").into())
}
}
pub fn make(&self, fname: &Path) -> Result<(), RunError> {
trace!("Template: {:?}", self.get_template(&fname));
std::fs::File::create(fname)?
.write_all(self.get_template(fname).as_bytes())?;
trace!("Written some bytes to {}", fname.to_string_lossy());
Ok(())
}
}
pub fn get_conf() -> Conf {
match get_conf_maybe() {
Ok(c) => c,
Err(e) => {
match e.kind() {
ErrorKind::InvalidData => error!("parse: {}", e),
_ => error!("{}", e)
};
Default::default()
}
}
}
pub fn get_conf_maybe() -> Result<Conf, Error> {
let mut current = std::env::current_dir()?;
let path = loop {
let candidate = current.join(".evr");
if candidate.exists() {
break candidate;
}
if !current.pop() {
return Err(Error::new(ErrorKind::NotFound, "Not a evr subtree"));
}
};
let raw_buf = std::fs::read_to_string(path.as_path())?;
let buf_result: Result<Conf, de::Error> = de::from_str(&raw_buf);
buf_result
.map(|mut buf| {
buf.path = Some(path.clone());
buf
})
.map_err(|err| Error::new(ErrorKind::InvalidData, err))
}
|
