use ctry

crates/ra_analysis/src/completion/mod.rs

@@ -38,10 +38,7 @@ pub(crate) fn completions(
         original_file.reparse(&edit)
     };
 
-    let module = match ModuleDescriptor::guess_from_position(db, position)? {
+    let module = ctry!(ModuleDescriptor::guess_from_position(db, position)?);
-        None => return Ok(None),
-        Some(it) => it,
-    };
 
     let mut res = Vec::new();
     let mut has_completions = false;

crates/ra_analysis/src/descriptors/module/mod.rs

@@ -17,7 +17,7 @@ use crate::{
     descriptors::{Path, PathKind, DescriptorDatabase},
     input::SourceRootId,
     arena::{Arena, Id},
-    loc2id::DefLoc,
+    loc2id::{DefLoc, DefId},
 };
 
 pub(crate) use self::nameres::ModuleScope;
@@ -153,15 +153,6 @@ impl ModuleDescriptor {
         db: &impl DescriptorDatabase,
         path: Path,
     ) -> Cancelable<Option<ModuleDescriptor>> {
-        macro_rules! ctry {
-            ($expr:expr) => {
-                match $expr {
-                    None => return Ok(None),
-                    Some(it) => it,
-                }
-            };
-        };
-
         let mut curr = match path.kind {
             PathKind::Crate => self.crate_root(),
             PathKind::Self_ | PathKind::Plain => self.clone(),

crates/ra_analysis/src/imp.rs

@@ -450,14 +450,8 @@ impl AnalysisImpl {
         let syntax = file.syntax();
 
         // Find the calling expression and it's NameRef
-        let calling_node = match FnCallNode::with_node(syntax, position.offset) {
+        let calling_node = ctry!(FnCallNode::with_node(syntax, position.offset));
-            Some(node) => node,
+        let name_ref = ctry!(calling_node.name_ref());
-            None => return Ok(None),
-        };
-        let name_ref = match calling_node.name_ref() {
-            Some(name) => name,
-            None => return Ok(None),
-        };
 
         // Resolve the function's NameRef (NOTE: this isn't entirely accurate).
         let file_symbols = self.index_resolve(name_ref)?;

crates/ra_analysis/src/lib.rs

@@ -9,6 +9,15 @@ extern crate relative_path;
 extern crate rustc_hash;
 extern crate salsa;
 
+macro_rules! ctry {
+    ($expr:expr) => {
+        match $expr {
+            None => return Ok(None),
+            Some(it) => it,
+        }
+    };
+}
+
 mod arena;
 mod db;
 mod loc2id;