Merge #4756

4756: Cleanup resolution of file paths r=matklad a=matklad

bors r+
🤖

Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>

crates/ra_db/src/lib.rs

@@ -89,8 +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_relative_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(
@@ -155,20 +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_relative_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>> {

crates/ra_hir_def/src/nameres/mod_resolution.rs

@@ -61,7 +61,7 @@ impl ModDir {
         };
 
         for candidate in candidate_files.iter() {
-            if let Some(file_id) = db.resolve_relative_path(file_id, candidate) {
+            if let Some(file_id) = db.resolve_path(file_id, candidate.as_str()) {
                 let mut root_non_dir_owner = false;
                 let mut mod_path = RelativePathBuf::new();
                 if !(candidate.ends_with("mod.rs") || attr_path.is_some()) {

crates/ra_hir_def/src/test_db.rs

@@ -58,12 +58,8 @@ impl FileLoader for TestDB {
     fn file_text(&self, file_id: FileId) -> Arc<String> {
         FileLoaderDelegate(self).file_text(file_id)
     }
-    fn resolve_relative_path(
-        &self,
-        anchor: FileId,
-        relative_path: &RelativePath,
-    ) -> Option<FileId> {
-        FileLoaderDelegate(self).resolve_relative_path(anchor, relative_path)
+    fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId> {
+        FileLoaderDelegate(self).resolve_path(anchor, path)
     }
     fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
         FileLoaderDelegate(self).relevant_crates(file_id)

crates/ra_hir_expand/src/builtin_macro.rs

@@ -8,7 +8,7 @@ use crate::{
 use crate::{quote, EagerMacroId, LazyMacroId, MacroCallId};
 use either::Either;
 use mbe::parse_to_token_tree;
-use ra_db::{FileId, RelativePath};
+use ra_db::FileId;
 use ra_parser::FragmentKind;
 
 macro_rules! register_builtin {
@@ -297,7 +297,7 @@ fn relative_file(db: &dyn AstDatabase, call_id: MacroCallId, path: &str) -> Opti
     let call_site = call_id.as_file().original_file(db);
 
     // Handle trivial case
-    if let Some(res) = db.resolve_relative_path(call_site, &RelativePath::new(&path)) {
+    if let Some(res) = db.resolve_path(call_site, path) {
         // Prevent include itself
         return if res == call_site { None } else { Some(res) };
     }

crates/ra_hir_expand/src/test_db.rs

@@ -41,12 +41,8 @@ impl FileLoader for TestDB {
     fn file_text(&self, file_id: FileId) -> Arc<String> {
         FileLoaderDelegate(self).file_text(file_id)
     }
-    fn resolve_relative_path(
-        &self,
-        anchor: FileId,
-        relative_path: &RelativePath,
-    ) -> Option<FileId> {
-        FileLoaderDelegate(self).resolve_relative_path(anchor, relative_path)
+    fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId> {
+        FileLoaderDelegate(self).resolve_path(anchor, path)
     }
     fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
         FileLoaderDelegate(self).relevant_crates(file_id)

crates/ra_hir_ty/src/test_db.rs

@@ -72,12 +72,8 @@ impl FileLoader for TestDB {
     fn file_text(&self, file_id: FileId) -> Arc<String> {
         FileLoaderDelegate(self).file_text(file_id)
     }
-    fn resolve_relative_path(
-        &self,
-        anchor: FileId,
-        relative_path: &RelativePath,
-    ) -> Option<FileId> {
-        FileLoaderDelegate(self).resolve_relative_path(anchor, relative_path)
+    fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId> {
+        FileLoaderDelegate(self).resolve_path(anchor, path)
     }
     fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
         FileLoaderDelegate(self).relevant_crates(file_id)

crates/ra_ide_db/src/lib.rs

@@ -57,12 +57,8 @@ impl FileLoader for RootDatabase {
     fn file_text(&self, file_id: FileId) -> Arc<String> {
         FileLoaderDelegate(self).file_text(file_id)
     }
-    fn resolve_relative_path(
-        &self,
-        anchor: FileId,
-        relative_path: &RelativePath,
-    ) -> Option<FileId> {
-        FileLoaderDelegate(self).resolve_relative_path(anchor, relative_path)
+    fn resolve_path(&self, anchor: FileId, path: &str) -> Option<FileId> {
+        FileLoaderDelegate(self).resolve_path(anchor, path)
     }
     fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
         FileLoaderDelegate(self).relevant_crates(file_id)

crates/rust-analyzer/tests/heavy_tests/main.rs

@@ -523,8 +523,6 @@ fn main() {
     let vb = B;
     message();
 }
-
-fn main() { message(); }
 "###,
     )
     .with_config(|config| {
@@ -552,34 +550,16 @@ fn main() { message(); }
         },
         json!([{
             "originSelectionRange": {
-                "end": {
-                    "character": 10,
-                    "line": 12
-                },
-                "start": {
-                    "character": 8,
-                    "line": 12
-                }
+                "end": { "character": 10, "line": 12 },
+                "start": { "character": 8, "line": 12 }
             },
             "targetRange": {
-                "end": {
-                    "character": 9,
-                    "line": 3
-                },
-                "start": {
-                    "character": 0,
-                    "line": 2
-                }
+                "end": { "character": 9, "line": 3 },
+                "start": { "character": 0, "line": 2 }
             },
             "targetSelectionRange": {
-                "end": {
-                    "character": 8,
-                    "line": 3
-                },
-                "start": {
-                    "character": 7,
-                    "line": 3
-                }
+                "end": { "character": 8, "line": 3 },
+                "start": { "character": 7, "line": 3 }
             },
             "targetUri": "file:///[..]src/main.rs"
         }]),
@@ -595,34 +575,16 @@ fn main() { message(); }
         },
         json!([{
             "originSelectionRange": {
-                "end": {
-                    "character": 10,
-                    "line": 13
-                },
-                "start": {
-                    "character": 8,
-                    "line":13
-                }
+                "end": { "character": 10, "line": 13 },
+                "start": { "character": 8, "line":13 }
             },
             "targetRange": {
-                "end": {
-                    "character": 9,
-                    "line": 7
-                },
-                "start": {
-                    "character": 0,
-                    "line":6
-                }
+                "end": { "character": 9, "line": 7 },
+                "start": { "character": 0, "line":6 }
             },
             "targetSelectionRange": {
-                "end": {
-                    "character": 8,
-                    "line": 7
-                },
-                "start": {
-                    "character": 7,
-                    "line": 7
-                }
+                "end": { "character": 8, "line": 7 },
+                "start": { "character": 7, "line": 7 }
             },
             "targetUri": "file:///[..]src/main.rs"
         }]),