Add proc-macro cli command for rust-analyzer

crates/rust-analyzer/src/bin/args.rs

@@ -45,6 +45,7 @@ pub(crate) enum Command {
         /// this would include the parser test files.
         all: bool,
     },
+    ProcMacro,
     RunServer,
     Version,
 }
@@ -264,6 +265,7 @@ ARGS:
 
                 Command::Diagnostics { path, load_output_dirs, with_proc_macro, all }
             }
+            "proc-macro" => Command::ProcMacro,
             _ => {
                 eprintln!(
                     "\

crates/rust-analyzer/src/bin/main.rs

@@ -51,6 +51,7 @@ fn main() -> Result<()> {
             cli::diagnostics(path.as_ref(), load_output_dirs, with_proc_macro, all)?
         }
 
+        args::Command::ProcMacro => run_proc_macro_sv()?,
         args::Command::RunServer => run_server()?,
         args::Command::Version => println!("rust-analyzer {}", env!("REV")),
     }
@@ -64,6 +65,11 @@ fn setup_logging() -> Result<()> {
     Ok(())
 }
 
+fn run_proc_macro_sv() -> Result<()> {
+    ra_proc_macro_srv::cli::run();
+    Ok(())
+}
+
 fn run_server() -> Result<()> {
     log::info!("lifecycle: server started");