Clearer naming

crates/paths/src/lib.rs

@@ -1,6 +1,7 @@
 //! Thin wrappers around `std::path`, distinguishing between absolute and
 //! relative paths.
 use std::{
+    borrow::Borrow,
     convert::{TryFrom, TryInto},
     ops,
     path::{Component, Path, PathBuf},
@@ -35,6 +36,12 @@ impl AsRef<AbsPath> for AbsPathBuf {
     }
 }
 
+impl Borrow<AbsPath> for AbsPathBuf {
+    fn borrow(&self) -> &AbsPath {
+        self.as_path()
+    }
+}
+
 impl TryFrom<PathBuf> for AbsPathBuf {
     type Error = PathBuf;
     fn try_from(path_buf: PathBuf) -> Result<AbsPathBuf, PathBuf> {

crates/project_model/src/build_data.rs

@@ -18,7 +18,7 @@ use stdx::JodChild;
 use crate::{cfg_flag::CfgFlag, CargoConfig};
 
 #[derive(Debug, Clone, Default, PartialEq, Eq)]
-pub(crate) struct BuildData {
+pub(crate) struct PackageBuildData {
     /// List of config flags defined by this package's build script
     pub(crate) cfgs: Vec<CfgFlag>,
     /// List of cargo-related environment variables with their value
@@ -32,6 +32,16 @@ pub(crate) struct BuildData {
     pub(crate) proc_macro_dylib_path: Option<AbsPathBuf>,
 }
 
+#[derive(Debug, Default, PartialEq, Eq, Clone)]
+pub(crate) struct WorkspaceBuildData {
+    per_package: FxHashMap<String, PackageBuildData>,
+}
+
+#[derive(Debug, Default, PartialEq, Eq, Clone)]
+pub struct BuildDataResult {
+    per_workspace: FxHashMap<AbsPathBuf, WorkspaceBuildData>,
+}
+
 #[derive(Clone, Debug)]
 pub(crate) struct BuildDataConfig {
     cargo_toml: AbsPathBuf,
@@ -52,13 +62,6 @@ pub struct BuildDataCollector {
     configs: FxHashMap<AbsPathBuf, BuildDataConfig>,
 }
 
-#[derive(Debug, Default, PartialEq, Eq, Clone)]
-pub struct BuildDataResult {
-    data: FxHashMap<AbsPathBuf, BuildDataMap>,
-}
-
-pub(crate) type BuildDataMap = FxHashMap<String, BuildData>;
-
 impl BuildDataCollector {
     pub(crate) fn add_config(&mut self, workspace_root: &AbsPath, config: BuildDataConfig) {
         self.configs.insert(workspace_root.to_path_buf(), config);
@@ -67,7 +70,7 @@ impl BuildDataCollector {
     pub fn collect(&mut self, progress: &dyn Fn(String)) -> Result<BuildDataResult> {
         let mut res = BuildDataResult::default();
         for (path, config) in self.configs.iter() {
-            res.data.insert(
+            res.per_workspace.insert(
                 path.clone(),
                 collect_from_workspace(
                     &config.cargo_toml,
@@ -81,9 +84,15 @@ impl BuildDataCollector {
     }
 }
 
+impl WorkspaceBuildData {
+    pub(crate) fn get(&self, package_id: &str) -> Option<&PackageBuildData> {
+        self.per_package.get(package_id)
+    }
+}
+
 impl BuildDataResult {
-    pub(crate) fn get(&self, root: &AbsPath) -> Option<&BuildDataMap> {
+    pub(crate) fn get(&self, workspace_root: &AbsPath) -> Option<&WorkspaceBuildData> {
-        self.data.get(&root.to_path_buf())
+        self.per_workspace.get(workspace_root)
     }
 }
 
@@ -102,7 +111,7 @@ fn collect_from_workspace(
     cargo_features: &CargoConfig,
     packages: &Vec<cargo_metadata::Package>,
     progress: &dyn Fn(String),
-) -> Result<BuildDataMap> {
+) -> Result<WorkspaceBuildData> {
     let mut cmd = Command::new(toolchain::cargo());
     cmd.args(&["check", "--workspace", "--message-format=json", "--manifest-path"])
         .arg(cargo_toml.as_ref());
@@ -136,7 +145,7 @@ fn collect_from_workspace(
     let child_stdout = child.stdout.take().unwrap();
     let stdout = BufReader::new(child_stdout);
 
-    let mut res = BuildDataMap::default();
+    let mut res = WorkspaceBuildData::default();
     for message in cargo_metadata::Message::parse_stream(stdout).flatten() {
         match message {
             Message::BuildScriptExecuted(BuildScript {
@@ -154,16 +163,17 @@ fn collect_from_workspace(
                     }
                     acc
                 };
-                let res = res.entry(package_id.repr.clone()).or_default();
+                let package_build_data =
+                    res.per_package.entry(package_id.repr.clone()).or_default();
                 // cargo_metadata crate returns default (empty) path for
                 // older cargos, which is not absolute, so work around that.
                 if !out_dir.as_str().is_empty() {
                     let out_dir = AbsPathBuf::assert(PathBuf::from(out_dir.into_os_string()));
-                    res.out_dir = Some(out_dir);
+                    package_build_data.out_dir = Some(out_dir);
-                    res.cfgs = cfgs;
+                    package_build_data.cfgs = cfgs;
                 }
 
-                res.envs = env;
+                package_build_data.envs = env;
             }
             Message::CompilerArtifact(message) => {
                 progress(format!("metadata {}", message.target.name));
@@ -173,8 +183,9 @@ fn collect_from_workspace(
                     // Skip rmeta file
                     if let Some(filename) = message.filenames.iter().find(|name| is_dylib(name)) {
                         let filename = AbsPathBuf::assert(PathBuf::from(&filename));
-                        let res = res.entry(package_id.repr.clone()).or_default();
+                        let package_build_data =
-                        res.proc_macro_dylib_path = Some(filename);
+                            res.per_package.entry(package_id.repr.clone()).or_default();
+                        package_build_data.proc_macro_dylib_path = Some(filename);
                     }
                 }
             }
@@ -188,12 +199,12 @@ fn collect_from_workspace(
     }
 
     for package in packages {
-        let build_data = res.entry(package.id.repr.clone()).or_default();
+        let package_build_data = res.per_package.entry(package.id.repr.clone()).or_default();
-        inject_cargo_env(package, build_data);
+        inject_cargo_env(package, package_build_data);
-        if let Some(out_dir) = &build_data.out_dir {
+        if let Some(out_dir) = &package_build_data.out_dir {
             // NOTE: cargo and rustc seem to hide non-UTF-8 strings from env! and option_env!()
             if let Some(out_dir) = out_dir.to_str().map(|s| s.to_owned()) {
-                build_data.envs.push(("OUT_DIR".to_string(), out_dir));
+                package_build_data.envs.push(("OUT_DIR".to_string(), out_dir));
             }
         }
     }
@@ -212,7 +223,7 @@ fn is_dylib(path: &Utf8Path) -> bool {
 /// Recreates the compile-time environment variables that Cargo sets.
 ///
 /// Should be synced with <https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-sets-for-crates>
-fn inject_cargo_env(package: &cargo_metadata::Package, build_data: &mut BuildData) {
+fn inject_cargo_env(package: &cargo_metadata::Package, build_data: &mut PackageBuildData) {
     let env = &mut build_data.envs;
 
     // FIXME: Missing variables:

crates/project_model/src/workspace.rs

@@ -12,7 +12,7 @@ use proc_macro_api::ProcMacroClient;
 use rustc_hash::{FxHashMap, FxHashSet};
 
 use crate::{
-    build_data::{BuildData, BuildDataMap, BuildDataResult},
+    build_data::{BuildDataResult, PackageBuildData, WorkspaceBuildData},
     cargo_workspace,
     cfg_flag::CfgFlag,
     rustc_cfg,
@@ -354,10 +354,10 @@ fn cargo_to_crate_graph(
     proc_macro_loader: &dyn Fn(&Path) -> Vec<ProcMacro>,
     load: &mut dyn FnMut(&AbsPath) -> Option<FileId>,
     cargo: &CargoWorkspace,
-    build_data_map: Option<&BuildDataMap>,
+    build_data_map: Option<&WorkspaceBuildData>,
     sysroot: &Sysroot,
     rustc: &Option<CargoWorkspace>,
-    rustc_build_data_map: Option<&BuildDataMap>,
+    rustc_build_data_map: Option<&WorkspaceBuildData>,
 ) -> CrateGraph {
     let _p = profile::span("cargo_to_crate_graph");
     let mut crate_graph = CrateGraph::default();
@@ -464,7 +464,7 @@ fn handle_rustc_crates(
     rustc_workspace: &CargoWorkspace,
     load: &mut dyn FnMut(&AbsPath) -> Option<FileId>,
     crate_graph: &mut CrateGraph,
-    rustc_build_data_map: Option<&FxHashMap<String, BuildData>>,
+    rustc_build_data_map: Option<&WorkspaceBuildData>,
     cfg_options: &CfgOptions,
     proc_macro_loader: &dyn Fn(&Path) -> Vec<ProcMacro>,
     pkg_to_lib_crate: &mut FxHashMap<la_arena::Idx<crate::PackageData>, CrateId>,
@@ -555,7 +555,7 @@ fn handle_rustc_crates(
 fn add_target_crate_root(
     crate_graph: &mut CrateGraph,
     pkg: &cargo_workspace::PackageData,
-    build_data: Option<&BuildData>,
+    build_data: Option<&PackageBuildData>,
     cfg_options: &CfgOptions,
     proc_macro_loader: &dyn Fn(&Path) -> Vec<ProcMacro>,
     file_id: FileId,