From 5b0e347f89be317d21fd894c0ccf4abee5645429 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 27 Nov 2018 16:30:02 +0300
Subject: Make resolve_path cancelable

---
 crates/ra_analysis/src/completion/reference_completion.rs |  2 +-
 crates/ra_analysis/src/descriptors/module/mod.rs          | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/crates/ra_analysis/src/completion/reference_completion.rs b/crates/ra_analysis/src/completion/reference_completion.rs
index 1faa70a18..41df881b3 100644
--- a/crates/ra_analysis/src/completion/reference_completion.rs
+++ b/crates/ra_analysis/src/completion/reference_completion.rs
@@ -157,7 +157,7 @@ fn complete_path(
         return Ok(());
     }
     path.segments.pop();
-    let target_module = match module.resolve_path(path) {
+    let target_module = match module.resolve_path(path)? {
         None => return Ok(()),
         Some(it) => it,
     };
diff --git a/crates/ra_analysis/src/descriptors/module/mod.rs b/crates/ra_analysis/src/descriptors/module/mod.rs
index a6eaec178..f5238e239 100644
--- a/crates/ra_analysis/src/descriptors/module/mod.rs
+++ b/crates/ra_analysis/src/descriptors/module/mod.rs
@@ -133,7 +133,15 @@ impl ModuleDescriptor {
         Ok(res)
     }
 
-    pub(crate) fn resolve_path(&self, path: Path) -> Option<ModuleDescriptor> {
+    pub(crate) fn resolve_path(&self, path: Path) -> Cancelable<Option<ModuleDescriptor>> {
+        let res = match self.do_resolve_path(path) {
+            None => return Ok(None),
+            Some(it) => it,
+        };
+        Ok(Some(res))
+    }
+
+    fn do_resolve_path(&self, path: Path) -> Option<ModuleDescriptor> {
         let mut curr = match path.kind {
             PathKind::Crate => self.crate_root(),
             PathKind::Self_ | PathKind::Plain => self.clone(),
-- 
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