9 files changed, 24 insertions, 28 deletions

diff --git a/crates/ra_ide_api/src/call_info.rs b/crates/ra_ide_api/src/call_info.rs
index 27b760780..efa320d83 100644
--- a/crates/ra_ide_api/src/call_info.rs
+++ b/crates/ra_ide_api/src/call_info.rs
@@ -20,7 +20,7 @@ pub(crate) fn call_info(db: &RootDatabase, position: FilePosition) -> Cancelable
     let name_ref = ctry!(calling_node.name_ref());
 
     // Resolve the function's NameRef (NOTE: this isn't entirely accurate).
-    let file_symbols = db.index_resolve(name_ref)?;
+    let file_symbols = db.index_resolve(name_ref);
     let symbol = ctry!(file_symbols.into_iter().find(|it| it.ptr.kind() == FN_DEF));
     let fn_file = db.source_file(symbol.file_id);
     let fn_def = symbol.ptr.resolve(&fn_file);
diff --git a/crates/ra_ide_api/src/completion/completion_context.rs b/crates/ra_ide_api/src/completion/completion_context.rs
index 113f6c070..f5b5ed689 100644
--- a/crates/ra_ide_api/src/completion/completion_context.rs
+++ b/crates/ra_ide_api/src/completion/completion_context.rs
@@ -42,7 +42,7 @@ impl<'a> CompletionContext<'a> {
         original_file: &'a SourceFile,
         position: FilePosition,
     ) -> Cancelable<Option<CompletionContext<'a>>> {
-        let module = source_binder::module_from_position(db, position)?;
+        let module = source_binder::module_from_position(db, position);
         let leaf =
             ctry!(find_leaf_at_offset(original_file.syntax(), position.offset).left_biased());
         let mut ctx = CompletionContext {
diff --git a/crates/ra_ide_api/src/goto_definition.rs b/crates/ra_ide_api/src/goto_definition.rs
index 332a2fb8d..591f36cce 100644
--- a/crates/ra_ide_api/src/goto_definition.rs
+++ b/crates/ra_ide_api/src/goto_definition.rs
@@ -48,7 +48,7 @@ pub(crate) fn reference_definition(
 ) -> Cancelable<ReferenceResult> {
     use self::ReferenceResult::*;
     if let Some(function) =
-        hir::source_binder::function_from_child_node(db, file_id, name_ref.syntax())?
+        hir::source_binder::function_from_child_node(db, file_id, name_ref.syntax())
     {
         let scope = function.scopes(db)?;
         // First try to resolve the symbol locally
@@ -77,8 +77,7 @@ pub(crate) fn reference_definition(
         }
     }
     // Then try module name resolution
-    if let Some(module) =
-        hir::source_binder::module_from_child_node(db, file_id, name_ref.syntax())?
+    if let Some(module) = hir::source_binder::module_from_child_node(db, file_id, name_ref.syntax())
     {
         if let Some(path) = name_ref
             .syntax()
@@ -96,7 +95,7 @@ pub(crate) fn reference_definition(
     }
     // If that fails try the index based approach.
     let navs = db
-        .index_resolve(name_ref)?
+        .index_resolve(name_ref)
         .into_iter()
         .map(NavigationTarget::from_symbol)
         .collect();
@@ -111,7 +110,7 @@ fn name_definition(
     if let Some(module) = name.syntax().parent().and_then(ast::Module::cast) {
         if module.has_semi() {
             if let Some(child_module) =
-                hir::source_binder::module_from_declaration(db, file_id, module)?
+                hir::source_binder::module_from_declaration(db, file_id, module)
             {
                 let nav = NavigationTarget::from_module(db, child_module)?;
                 return Ok(Some(vec![nav]));
diff --git a/crates/ra_ide_api/src/hover.rs b/crates/ra_ide_api/src/hover.rs
index 107b23833..26f3ced70 100644
--- a/crates/ra_ide_api/src/hover.rs
+++ b/crates/ra_ide_api/src/hover.rs
@@ -72,7 +72,7 @@ pub(crate) fn type_of(db: &RootDatabase, frange: FileRange) -> Cancelable<Option
         db,
         frange.file_id,
         parent_fn
-    )?);
+    ));
     let infer = function.infer(db)?;
     let syntax_mapping = function.body_syntax_mapping(db)?;
     if let Some(expr) = ast::Expr::cast(node).and_then(|e| syntax_mapping.node_expr(e)) {
diff --git a/crates/ra_ide_api/src/imp.rs b/crates/ra_ide_api/src/imp.rs
index ba4aa0fd5..76cb312dd 100644
--- a/crates/ra_ide_api/src/imp.rs
+++ b/crates/ra_ide_api/src/imp.rs
@@ -100,7 +100,7 @@ impl db::RootDatabase {
 impl db::RootDatabase {
     /// Returns `Vec` for the same reason as `parent_module`
     pub(crate) fn crate_for(&self, file_id: FileId) -> Cancelable<Vec<CrateId>> {
-        let module = match source_binder::module_from_file_id(self, file_id)? {
+        let module = match source_binder::module_from_file_id(self, file_id) {
             Some(it) => it,
             None => return Ok(Vec::new()),
         };
@@ -147,7 +147,7 @@ impl db::RootDatabase {
                     db,
                     position.file_id,
                     binding.syntax(),
-                )?);
+                ));
                 return Ok(Some((binding, descr)));
             };
             let name_ref = ctry!(find_node_at_offset::<ast::NameRef>(syntax, position.offset));
@@ -155,7 +155,7 @@ impl db::RootDatabase {
                 db,
                 position.file_id,
                 name_ref.syntax(),
-            )?);
+            ));
             let scope = descr.scopes(db)?;
             let resolved = ctry!(scope.resolve_local_name(name_ref));
             let resolved = resolved.ptr().resolve(source_file);
@@ -179,7 +179,7 @@ impl db::RootDatabase {
                 fix: d.fix.map(|fix| SourceChange::from_local_edit(file_id, fix)),
             })
             .collect::<Vec<_>>();
-        if let Some(m) = source_binder::module_from_file_id(self, file_id)? {
+        if let Some(m) = source_binder::module_from_file_id(self, file_id) {
             for (name_node, problem) in m.problems(self)? {
                 let source_root = self.file_source_root(file_id);
                 let diag = match problem {
@@ -258,7 +258,7 @@ impl db::RootDatabase {
             .collect::<Vec<_>>();
         Ok(res)
     }
-    pub(crate) fn index_resolve(&self, name_ref: &ast::NameRef) -> Cancelable<Vec<FileSymbol>> {
+    pub(crate) fn index_resolve(&self, name_ref: &ast::NameRef) -> Vec<FileSymbol> {
         let name = name_ref.text();
         let mut query = Query::new(name.to_string());
         query.exact();
diff --git a/crates/ra_ide_api/src/lib.rs b/crates/ra_ide_api/src/lib.rs
index abb50ff95..e0b8410d1 100644
--- a/crates/ra_ide_api/src/lib.rs
+++ b/crates/ra_ide_api/src/lib.rs
@@ -381,12 +381,11 @@ impl Analysis {
     /// Fuzzy searches for a symbol.
     pub fn symbol_search(&self, query: Query) -> Cancelable<Vec<NavigationTarget>> {
         self.with_db(|db| {
-            let res = symbol_index::world_symbols(db, query)?
+            symbol_index::world_symbols(db, query)
                 .into_iter()
                 .map(NavigationTarget::from_symbol)
-                .collect::<Vec<_>>();
-            Ok(res)
-        })?
+                .collect::<Vec<_>>()
+        })
     }
 
     pub fn goto_definition(
diff --git a/crates/ra_ide_api/src/parent_module.rs b/crates/ra_ide_api/src/parent_module.rs
index 675042a6c..451304739 100644
--- a/crates/ra_ide_api/src/parent_module.rs
+++ b/crates/ra_ide_api/src/parent_module.rs
@@ -8,7 +8,7 @@ pub(crate) fn parent_module(
     db: &RootDatabase,
     position: FilePosition,
 ) -> Cancelable<Vec<NavigationTarget>> {
-    let module = match hir::source_binder::module_from_position(db, position)? {
+    let module = match hir::source_binder::module_from_position(db, position) {
         None => return Ok(Vec::new()),
         Some(it) => it,
     };
diff --git a/crates/ra_ide_api/src/runnables.rs b/crates/ra_ide_api/src/runnables.rs
index f1de28094..9fa0f79a6 100644
--- a/crates/ra_ide_api/src/runnables.rs
+++ b/crates/ra_ide_api/src/runnables.rs
@@ -75,8 +75,7 @@ fn runnable_mod(db: &RootDatabase, file_id: FileId, module: &ast::Module) -> Opt
         return None;
     }
     let range = module.syntax().range();
-    let module =
-        hir::source_binder::module_from_child_node(db, file_id, module.syntax()).ok()??;
+    let module = hir::source_binder::module_from_child_node(db, file_id, module.syntax())?;
 
     // FIXME: thread cancellation instead of `.ok`ing
     let path = module
diff --git a/crates/ra_ide_api/src/symbol_index.rs b/crates/ra_ide_api/src/symbol_index.rs
index b7a3a3550..74165d68f 100644
--- a/crates/ra_ide_api/src/symbol_index.rs
+++ b/crates/ra_ide_api/src/symbol_index.rs
@@ -37,13 +37,13 @@ use salsa::ParallelDatabase;
 use rayon::prelude::*;
 
 use crate::{
-    Cancelable, FileId, Query,
+    FileId, Query,
     db::RootDatabase,
 };
 
 salsa::query_group! {
     pub(crate) trait SymbolsDatabase: hir::db::HirDatabase {
-        fn file_symbols(file_id: FileId) -> Cancelable<Arc<SymbolIndex>> {
+        fn file_symbols(file_id: FileId) -> Arc<SymbolIndex> {
             type FileSymbolsQuery;
         }
         fn library_symbols(id: SourceRootId) -> Arc<SymbolIndex> {
@@ -53,7 +53,7 @@ salsa::query_group! {
     }
 }
 
-fn file_symbols(db: &impl SymbolsDatabase, file_id: FileId) -> Cancelable<Arc<SymbolIndex>> {
+fn file_symbols(db: &impl SymbolsDatabase, file_id: FileId) -> Arc<SymbolIndex> {
     db.check_canceled();
     let source_file = db.source_file(file_id);
     let mut symbols = source_file
@@ -63,16 +63,16 @@ fn file_symbols(db: &impl SymbolsDatabase, file_id: FileId) -> Cancelable<Arc<Sy
         .map(move |(name, ptr)| FileSymbol { name, ptr, file_id })
         .collect::<Vec<_>>();
 
-    for (name, text_range) in hir::source_binder::macro_symbols(db, file_id)? {
+    for (name, text_range) in hir::source_binder::macro_symbols(db, file_id) {
         let node = find_covering_node(source_file.syntax(), text_range);
         let ptr = LocalSyntaxPtr::new(node);
         symbols.push(FileSymbol { file_id, name, ptr })
     }
 
-    Ok(Arc::new(SymbolIndex::new(symbols)))
+    Arc::new(SymbolIndex::new(symbols))
 }
 
-pub(crate) fn world_symbols(db: &RootDatabase, query: Query) -> Cancelable<Vec<FileSymbol>> {
+pub(crate) fn world_symbols(db: &RootDatabase, query: Query) -> Vec<FileSymbol> {
     /// Need to wrap Snapshot to provide `Clone` impl for `map_with`
     struct Snap(salsa::Snapshot<RootDatabase>);
     impl Clone for Snap {
@@ -98,10 +98,9 @@ pub(crate) fn world_symbols(db: &RootDatabase, query: Query) -> Cancelable<Vec<F
         files
             .par_iter()
             .map_with(snap, |db, &file_id| db.0.file_symbols(file_id))
-            .filter_map(|it| it.ok())
             .collect()
     };
-    Ok(query.search(&buf))
+    query.search(&buf)
 }
 
 #[derive(Default, Debug)]