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Do not require a special env var to be set for the proc-macro-srv

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This commit is contained in:
Lukas Wirth 2024-12-12 15:09:18 +01:00
parent acd469681f
commit a5adfafd93
1 changed files with 15 additions and 41 deletions
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54
crates/proc-macro-srv-cli/src/main.rs
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@ -6,62 +6,36 @@
#[cfg(feature = "in-rust-tree")]
extern crate rustc_driver as _;
use proc_macro_api::json::{read_json, write_json};
use std::io;
fn main() -> std::io::Result<()> {
let v = std::env::var("RUST_ANALYZER_INTERNALS_DO_NOT_USE");
match v.as_deref() {
Ok("this is unstable") => {
// very well, if you must
}
_ => {
eprintln!("If you're rust-analyzer, you can use this tool by exporting RUST_ANALYZER_INTERNALS_DO_NOT_USE='this is unstable'.");
eprintln!("If not, you probably shouldn't use this tool. But do what you want: I'm an error message, not a cop.");
if v.is_err() {
eprintln!("This is an IDE implementation detail, you can use this tool by exporting RUST_ANALYZER_INTERNALS_DO_NOT_USE.");
eprintln!(
"Note that this tool's API is highly unstable and may break without prior notice"
);
std::process::exit(122);
}
}
run()
}
#[cfg(not(any(feature = "sysroot-abi", rust_analyzer)))]
fn run() -> io::Result<()> {
let err = "proc-macro-srv-cli needs to be compiled with the `sysroot-abi` feature to function";
eprintln!("{err}");
use proc_macro_api::msg::{self, Message};
let read_request =
|buf: &mut String| msg::Request::read(read_json, &mut io::stdin().lock(), buf);
let write_response = |msg: msg::Response| msg.write(write_json, &mut io::stdout().lock());
let mut buf = String::new();
while let Some(req) = read_request(&mut buf)? {
let res = match req {
msg::Request::ListMacros { .. } => msg::Response::ListMacros(Err(err.to_owned())),
msg::Request::ExpandMacro(_) => {
msg::Response::ExpandMacro(Err(msg::PanicMessage(err.to_owned())))
}
msg::Request::ApiVersionCheck {} => {
msg::Response::ApiVersionCheck(proc_macro_api::msg::CURRENT_API_VERSION)
}
msg::Request::SetConfig(_) => {
msg::Response::SetConfig(proc_macro_api::msg::ServerConfig {
span_mode: msg::SpanMode::Id,
})
}
};
write_response(res)?
}
Ok(())
Err(io::Error::new(
io::ErrorKind::Unsupported,
"proc-macro-srv-cli needs to be compiled with the `sysroot-abi` feature to function"
.to_owned(),
))
}
#[cfg(any(feature = "sysroot-abi", rust_analyzer))]
fn run() -> io::Result<()> {
use proc_macro_api::msg::{self, Message};
use proc_macro_api::{
json::{read_json, write_json},
msg::{self, Message},
};
use proc_macro_srv::EnvSnapshot;
let read_request =