More direct signature for resolve_path

1 files changed, 13 insertions, 8 deletions

diff --git a/crates/ra_db/src/lib.rs b/crates/ra_db/src/lib.rs
index 07e1b8aba..2e63cb46e 100644
--- a/crates/ra_db/src/lib.rs
+++ b/crates/ra_db/src/lib.rs
@@ -89,7 +89,7 @@ pub const DEFAULT_LRU_CAP: usize = 128;
 pub trait FileLoader {
     /// Text of the file.
     fn file_text(&self, file_id: FileId) -> Arc<String>;
-    fn resolve_path(&self, anchor: FileId, relative_path: &RelativePath) -> Option<FileId>;
+    fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId>;
     fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>>;
 
     fn resolve_extern_path(
@@ -154,16 +154,21 @@ impl<T: SourceDatabaseExt> FileLoader for FileLoaderDelegate<&'_ T> {
     fn file_text(&self, file_id: FileId) -> Arc<String> {
         SourceDatabaseExt::file_text(self.0, file_id)
     }
-    fn resolve_path(&self, anchor: FileId, relative_path: &RelativePath) -> Option<FileId> {
-        let path = {
-            let mut path = self.0.file_relative_path(anchor);
-            assert!(path.pop());
-            path.push(relative_path);
-            path.normalize()
+    /// Note that we intentionally accept a `&str` and not a `&Path` here. This
+    /// method exists to handle `#[path = "/some/path.rs"] mod foo;` and such,
+    /// so the input is guaranteed to be utf-8 string. We might introduce
+    /// `struct StrPath(str)` for clarity some day, but it's a bit messy, so we
+    /// get by with a `&str` for the time being.
+    fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId> {
+        let rel_path = {
+            let mut rel_path = self.0.file_relative_path(anchor);
+            assert!(rel_path.pop());
+            rel_path.push(path);
+            rel_path.normalize()
         };
         let source_root = self.0.file_source_root(anchor);
         let source_root = self.0.source_root(source_root);
-        source_root.file_by_relative_path(&path)
+        source_root.file_by_relative_path(&rel_path)
     }
 
     fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {