Add test for proc-macro meta info retrieval

2 files changed, 9 insertions, 7 deletions

diff --git a/crates/proc_macro_api/src/lib.rs b/crates/proc_macro_api/src/lib.rs
index 941d0fe9e..2dd2a8541 100644
--- a/crates/proc_macro_api/src/lib.rs
+++ b/crates/proc_macro_api/src/lib.rs
@@ -23,6 +23,7 @@ use tt::{SmolStr, Subtree};
 use crate::process::{ProcMacroProcessSrv, ProcMacroProcessThread};
 
 pub use rpc::{ExpansionResult, ExpansionTask, ListMacrosResult, ListMacrosTask, ProcMacroKind};
+pub use version::{read_dylib_info, RustCInfo};
 
 #[derive(Debug, Clone)]
 struct ProcMacroProcessExpander {
@@ -76,7 +77,7 @@ impl ProcMacroClient {
     }
 
     pub fn by_dylib_path(&self, dylib_path: &Path) -> Vec<ProcMacro> {
-        match version::read_info(dylib_path) {
+        match version::read_dylib_info(dylib_path) {
             Ok(info) => {
                 if info.version.0 < 1 || info.version.1 < 47 {
                     eprintln!("proc-macro {} built by {:#?} is not supported by Rust Analyzer, please update your rust version.", dylib_path.to_string_lossy(), info);
diff --git a/crates/proc_macro_api/src/version.rs b/crates/proc_macro_api/src/version.rs
index b903658fb..dcf8fae8f 100644
--- a/crates/proc_macro_api/src/version.rs
+++ b/crates/proc_macro_api/src/version.rs
@@ -11,14 +11,15 @@ use object::read::{File as BinaryFile, Object, ObjectSection};
 use snap::read::FrameDecoder as SnapDecoder;
 
 #[derive(Debug)]
-pub(crate) struct RustCInfo {
-    pub(crate) version: (usize, usize, usize),
-    pub(crate) channel: String,
-    pub(crate) commit: String,
-    pub(crate) date: String,
+pub struct RustCInfo {
+    pub version: (usize, usize, usize),
+    pub channel: String,
+    pub commit: String,
+    pub date: String,
 }
 
-pub(crate) fn read_info(dylib_path: &Path) -> io::Result<RustCInfo> {
+/// Read rustc dylib information
+pub fn read_dylib_info(dylib_path: &Path) -> io::Result<RustCInfo> {
     macro_rules! err {
         ($e:literal) => {
             io::Error::new(io::ErrorKind::InvalidData, $e)