Rust: allow to specify the target directory

rust/extractor/macros/src/lib.rs

@@ -21,6 +21,12 @@ pub fn extractor_cli_config(_attr: TokenStream, item: TokenStream) -> TokenStrea
                         #id: bool,
                     };
                 }
+                if p.path.segments.len() == 1 && p.path.segments[0].ident == "Option" {
+                    return quote! {
+                        #[arg(long)]
+                        #id: #ty,
+                    };
+                }
             }
             if id == &format_ident!("verbose") {
                 quote! {

rust/extractor/src/config.rs

@@ -37,6 +37,7 @@ pub struct Config {
     pub scratch_dir: PathBuf,
     pub trap_dir: PathBuf,
     pub source_archive_dir: PathBuf,
+    pub target_dir: Option<PathBuf>,
     pub extract_dependencies: bool,
     pub verbose: u8,
     pub compression: Compression,

rust/extractor/src/main.rs

@@ -130,8 +130,11 @@ fn main() -> anyhow::Result<()> {
         }
         extractor.extract_without_semantics(file, "no manifest found");
     }
+    let target_dir = &cfg
+        .target_dir
+        .unwrap_or_else(|| cfg.scratch_dir.join("target"));
     for (manifest, files) in map.values().filter(|(_, files)| !files.is_empty()) {
-        if let Some((ref db, ref vfs)) = RustAnalyzer::load_workspace(manifest, &cfg.scratch_dir) {
+        if let Some((ref db, ref vfs)) = RustAnalyzer::load_workspace(manifest, target_dir) {
             let semantics = Semantics::new(db);
             for file in files {
                 let Some(id) = path_to_file_id(file, vfs) else {

rust/extractor/src/rust_analyzer.rs

@@ -45,13 +45,11 @@ pub struct ParseResult<'a> {
 impl<'a> RustAnalyzer<'a> {
     pub fn load_workspace(
         project: &ProjectManifest,
-        scratch_dir: &Path,
+        target_dir: &Path,
     ) -> Option<(RootDatabase, Vfs)> {
         let config = CargoConfig {
             sysroot: Some(RustLibSource::Discover),
-            target_dir: ra_ap_paths::Utf8PathBuf::from_path_buf(scratch_dir.to_path_buf())
-                .map(|x| x.join("target"))
-                .ok(),
+            target_dir: ra_ap_paths::Utf8PathBuf::from_path_buf(target_dir.to_path_buf()).ok(),
             ..Default::default()
         };
         let progress = |t| (log::trace!("progress: {}", t));