rustc_targets/
lib.rs

1use std::process::Command;
2
3pub struct Targets(Vec<u8>);
4
5impl Targets {
6    pub fn iter(&self) -> Result<TargetsIter, std::str::Utf8Error> {
7        std::str::from_utf8(&self.0)
8            .map(str::lines)
9            .map(TargetsIter)
10    }
11}
12
13pub struct TargetsIter<'a>(std::str::Lines<'a>);
14
15impl<'a> Iterator for TargetsIter<'a> {
16    type Item = &'a str;
17
18    fn next(&mut self) -> Option<Self::Item> {
19        self.0.next()
20    }
21}
22
23/// Returns the list of targets supported by the current rustc using CLI.
24/// 
25/// The list of targets can be iterated over using the `iter` method:
26/// 
27/// # Example
28/// 
29/// ```rust
30#[doc = include_str!("../examples/targets.rs")]
31/// ```
32pub fn from_cli() -> Result<Targets, std::io::Error> {
33    let output = Command::new("rustc")
34        .arg("--print")
35        .arg("target-list")
36        .output()?;
37    
38    Ok(Targets(output.stdout))
39}
rustc_targets/lib.rs

rustc_targets/
lib.rs
