52 lines
1.7 KiB
Rust
52 lines
1.7 KiB
Rust
//! A standalone binary for `proc-macro-srv`.
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//! Driver for proc macro server
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use std::io;
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fn main() -> std::io::Result<()> {
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let v = std::env::var("RUST_ANALYZER_INTERNALS_DO_NOT_USE");
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match v.as_deref() {
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Ok("this is unstable") => {
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// very well, if you must
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}
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_ => {
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eprintln!("If you're rust-analyzer, you can use this tool by exporting RUST_ANALYZER_INTERNALS_DO_NOT_USE='this is unstable'.");
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eprintln!("If not, you probably shouldn't use this tool. But do what you want: I'm an error message, not a cop.");
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std::process::exit(122);
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}
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}
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run()
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}
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#[cfg(not(feature = "sysroot-abi"))]
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fn run() -> io::Result<()> {
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panic!("proc-macro-srv-cli requires the `sysroot-abi` feature to be enabled");
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}
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#[cfg(feature = "sysroot-abi")]
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fn run() -> io::Result<()> {
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use proc_macro_api::msg::{self, Message};
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let read_request = |buf: &mut String| msg::Request::read(&mut io::stdin().lock(), buf);
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let write_response = |msg: msg::Response| msg.write(&mut io::stdout().lock());
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let mut srv = proc_macro_srv::ProcMacroSrv::default();
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let mut buf = String::new();
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while let Some(req) = read_request(&mut buf)? {
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let res = match req {
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msg::Request::ListMacros { dylib_path } => {
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msg::Response::ListMacros(srv.list_macros(&dylib_path))
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}
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msg::Request::ExpandMacro(task) => msg::Response::ExpandMacro(srv.expand(task)),
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msg::Request::ApiVersionCheck {} => {
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msg::Response::ApiVersionCheck(proc_macro_api::msg::CURRENT_API_VERSION)
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}
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};
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write_response(res)?
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}
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Ok(())
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}
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