Using LSP, get code snippet and print what a given trait has

[Migorithm]

[Eveheeero]

With rust-analyzer command, we can use it like

fn a() {
	let mut cmd = std::process::Command::new(r#"C:\Users\jm009\.cargo\bin\rust-analyzer.exe"#);
	let cmd = cmd.stdin(Stdio::piped()).stdout(Stdio::piped());
	let mut process = cmd.spawn().unwrap();

	let mut stdin = process.stdin.take().unwrap();
	let mut stdout = process.stdout.take().unwrap();

	let data = r#"{"jsonrpc": "2.0","id": 1,"method": "initialize","params":{"rootPath":"C:/_Evh/workspace/ruva","processId":null,"initializationOptions":{},"capabilities":{}}}"#;
	let result = send(&mut stdin, &mut stdout, data);
	eprintln!("{}", result);

	process.kill().unwrap();
}

fn send(stdin: &mut ChildStdin, stdout: &mut ChildStdout, request: impl AsRef<str>) -> String {
	use std::io::Read;
	let data = request.as_ref();
	let len = data.len();
	std::io::Write::write_fmt(stdin, format_args!("Content-Length: {}\r\n\r\n{}\n", len, data)).unwrap();
	let mut buffer = String::new();
	stdout.read_to_string(&mut buffer).unwrap();
	buffer
}

[Eveheeero]

With libraries, we can use lsp-server and lsp-types like https://github.com/rust-lang/rust-analyzer/blob/64a140527b383e3a2fe95908881624fc5374c60c/lib/lsp-server/examples/goto_def.rs