erg_common 0.6.0-beta.1

A common components library of Erg
Documentation 
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

use std::env::var;
use std::path::PathBuf;

fn _erg_path() -> PathBuf {
    let path = var("ERG_PATH").unwrap_or_else(|_| env!("CARGO_ERG_PATH").to_string());
    PathBuf::from(path)
        .canonicalize()
        .expect("ERG_PATH not found")
}
fn _erg_std_path() -> PathBuf {
    _erg_path()
        .join("lib")
        .join("std")
        .canonicalize()
        .expect("ERG_PATH/lib/std not found")
}
fn _erg_pystd_path() -> PathBuf {
    _erg_path()
        .join("lib")
        .join("pystd")
        .canonicalize()
        .expect("ERG_PATH/lib/pystd not found")
}
fn _erg_external_lib_path() -> PathBuf {
    _erg_path()
        .join("lib")
        .join("external")
        .canonicalize()
        .expect("ERG_PATH/lib/external not found")
}

thread_local! {
    pub static ERG_PATH: PathBuf = _erg_path();
    pub static ERG_STD_PATH: PathBuf = _erg_std_path();
    pub static ERG_PYSTD_PATH: PathBuf = _erg_pystd_path();
    pub static ERG_EXTERNAL_LIB_PATH: PathBuf = _erg_external_lib_path();
}

pub fn erg_path() -> PathBuf {
    ERG_PATH.with(|s| s.clone())
}

pub fn erg_std_path() -> PathBuf {
    ERG_STD_PATH.with(|s| s.clone())
}

pub fn erg_pystd_path() -> PathBuf {
    ERG_PYSTD_PATH.with(|s| s.clone())
}

pub fn erg_external_lib_path() -> PathBuf {
    ERG_EXTERNAL_LIB_PATH.with(|s| s.clone())
}