Setup Env in world

crates/ra_project_model/src/lib.rs

@@ -14,7 +14,7 @@ use std::{
 
 use anyhow::{bail, Context, Result};
 use ra_cfg::CfgOptions;
-use ra_db::{CrateGraph, CrateName, Edition, Env, FileId};
+use ra_db::{CrateGraph, CrateName, Edition, Env, ExternSourceId, FileId};
 use rustc_hash::FxHashMap;
 use serde_json::from_reader;
 
@@ -162,6 +162,7 @@ impl ProjectWorkspace {
     pub fn to_crate_graph(
         &self,
         default_cfg_options: &CfgOptions,
+        outdirs: &FxHashMap<String, (ExternSourceId, String)>,
         load: &mut dyn FnMut(&Path) -> Option<FileId>,
     ) -> CrateGraph {
         let mut crate_graph = CrateGraph::default();
@@ -185,6 +186,8 @@ impl ProjectWorkspace {
                             }
                             opts
                         };
+
+                        // FIXME: No crate name in json definition such that we cannot add OUT_DIR to env
                         crates.insert(
                             crate_id,
                             crate_graph.add_crate_root(
@@ -231,12 +234,17 @@ impl ProjectWorkspace {
                             opts
                         };
 
+                        let mut env = Env::default();
+                        if let Some((id, path)) = outdirs.get(krate.name(&sysroot)) {
+                            env.set_extern_path("OUT_DIR", &path, *id);
+                        }
+
                         let crate_id = crate_graph.add_crate_root(
                             file_id,
                             Edition::Edition2018,
                             Some(krate.name(&sysroot).to_string()),
                             cfg_options,
-                            Env::default(),
+                            env,
                         );
                         sysroot_crates.insert(krate, crate_id);
                     }
@@ -275,12 +283,16 @@ impl ProjectWorkspace {
                                 opts.insert_features(pkg.features(&cargo).iter().map(Into::into));
                                 opts
                             };
+                            let mut env = Env::default();
+                            if let Some((id, path)) = outdirs.get(pkg.name(&cargo)) {
+                                env.set_extern_path("OUT_DIR", &path, *id);
+                            }
                             let crate_id = crate_graph.add_crate_root(
                                 file_id,
                                 edition,
                                 Some(pkg.name(&cargo).to_string()),
                                 cfg_options,
-                                Env::default(),
+                                env,
                             );
                             if tgt.kind(&cargo) == TargetKind::Lib {
                                 lib_tgt = Some(crate_id);

crates/rust-analyzer/src/cli/load_cargo.rs

@@ -52,7 +52,10 @@ pub(crate) fn load_cargo(
         opts
     };
 
-    let crate_graph = ws.to_crate_graph(&default_cfg_options, &mut |path: &Path| {
+    // FIXME: outdirs?
+    let outdirs = FxHashMap::default();
+
+    let crate_graph = ws.to_crate_graph(&default_cfg_options, &outdirs, &mut |path: &Path| {
         let vfs_file = vfs.load(path);
         log::debug!("vfs file {:?} -> {:?}", path, vfs_file);
         vfs_file.map(vfs_file_to_id)

crates/rust-analyzer/src/world.rs

@@ -26,6 +26,8 @@ use crate::{
     vfs_glob::{Glob, RustPackageFilterBuilder},
     LspError, Result,
 };
+use ra_db::ExternSourceId;
+use rustc_hash::{FxHashMap, FxHashSet};
 
 #[derive(Debug, Clone)]
 pub struct Options {
@@ -98,6 +100,19 @@ impl WorldState {
                 RootEntry::new(pkg_root.path().clone(), filter.into_vfs_filter())
             }));
         }
+
+        let extern_dirs: FxHashSet<_> =
+            additional_out_dirs.iter().map(|(_, path)| (PathBuf::from(path))).collect();
+        let mut extern_source_roots = FxHashMap::default();
+
+        roots.extend(additional_out_dirs.iter().map(|(_, path)| {
+            let mut filter = RustPackageFilterBuilder::default().set_member(false);
+            for glob in exclude_globs.iter() {
+                filter = filter.exclude(glob.clone());
+            }
+            RootEntry::new(PathBuf::from(&path), filter.into_vfs_filter())
+        }));
+
         let (task_sender, task_receiver) = unbounded();
         let task_sender = Box::new(move |t| task_sender.send(t).unwrap());
         let (mut vfs, vfs_roots) = Vfs::new(roots, task_sender, watch);
@@ -107,6 +122,11 @@ impl WorldState {
             let is_local = folder_roots.iter().any(|it| vfs_root_path.starts_with(it));
             change.add_root(SourceRootId(r.0), is_local);
             change.set_debug_root_path(SourceRootId(r.0), vfs_root_path.display().to_string());
+
+            // FIXME: add path2root in vfs to simpily this logic
+            if extern_dirs.contains(&vfs_root_path) {
+                extern_source_roots.insert(vfs_root_path, ExternSourceId(r.0));
+            }
         }
 
         // FIXME: Read default cfgs from config
@@ -124,11 +144,20 @@ impl WorldState {
             vfs_file.map(|f| FileId(f.0))
         };
 
-        workspaces.iter().map(|ws| ws.to_crate_graph(&default_cfg_options, &mut load)).for_each(
-            |graph| {
+        let mut outdirs = FxHashMap::default();
+        for (name, path) in additional_out_dirs {
+            let path = PathBuf::from(&path);
+            if let Some(id) = extern_source_roots.get(&path) {
+                outdirs.insert(name, (id.clone(), path.to_string_lossy().replace("\\", "/")));
+            }
+        }
+
+        workspaces
+            .iter()
+            .map(|ws| ws.to_crate_graph(&default_cfg_options, &outdirs, &mut load))
+            .for_each(|graph| {
                 crate_graph.extend(graph);
-            },
-        );
+            });
         change.set_crate_graph(crate_graph);
 
         // FIXME: Figure out the multi-workspace situation