Merge #165

165: Make modules with tests runnable r=farodin91 a=farodin91

Fixes #154

I having problems to traverse the path to module. The main problem is that module_tree only supports `FileId` and not `Module` in files. Any idea?

I need to clean up the code a bit later.

Co-authored-by: Jan Jansen <[email protected]>

1 files changed, 22 insertions, 0 deletions

diff --git a/crates/ra_analysis/src/imp.rs b/crates/ra_analysis/src/imp.rs
index 5ed374c79..5669aa94d 100644
--- a/crates/ra_analysis/src/imp.rs
+++ b/crates/ra_analysis/src/imp.rs
@@ -181,6 +181,28 @@ impl AnalysisImpl {
         };
         Ok(query.search(&buf))
     }
+
+    pub(crate) fn module_path(&self, position: FilePosition) -> Cancelable<Option<String>> {
+        let descr = match source_binder::module_from_position(&*self.db, position)? {
+            None => return Ok(None),
+            Some(it) => it,
+        };
+        let name = match descr.name() {
+            None => return Ok(None),
+            Some(it) => it.to_string(),
+        };
+
+        let modules = descr.path_to_root();
+
+        let path = modules
+            .iter()
+            .filter_map(|s| s.name())
+            .skip(1) // name is already part of the string.
+            .fold(name, |path, it| format!("{}::{}", it, path));
+
+        Ok(Some(path.to_string()))
+    }
+
     /// This returns `Vec` because a module may be included from several places. We
     /// don't handle this case yet though, so the Vec has length at most one.
     pub fn parent_module(&self, position: FilePosition) -> Cancelable<Vec<(FileId, FileSymbol)>> {