1 files changed, 15 insertions, 11 deletions

diff --git a/crates/completion/src/context.rs b/crates/completion/src/context.rs
index ebf28e887..b1e8eba85 100644
--- a/crates/completion/src/context.rs
+++ b/crates/completion/src/context.rs
@@ -4,10 +4,8 @@ use hir::{Local, ScopeDef, Semantics, SemanticsScope, Type};
 use ide_db::base_db::{FilePosition, SourceDatabase};
 use ide_db::{call_info::ActiveParameter, RootDatabase};
 use syntax::{
-    algo::{find_covering_element, find_node_at_offset},
-    ast, match_ast, AstNode, NodeOrToken,
-    SyntaxKind::*,
-    SyntaxNode, SyntaxToken, TextRange, TextSize,
+    algo::find_node_at_offset, ast, match_ast, AstNode, NodeOrToken, SyntaxKind::*, SyntaxNode,
+    SyntaxToken, TextRange, TextSize,
 };
 use test_utils::mark;
 use text_edit::Indel;
@@ -92,6 +90,7 @@ pub(crate) struct CompletionContext<'a> {
     pub(super) has_item_list_or_source_file_parent: bool,
     pub(super) for_is_prev2: bool,
     pub(super) fn_is_prev: bool,
+    pub(super) incomplete_let: bool,
     pub(super) locals: Vec<(String, Local)>,
 }
 
@@ -132,9 +131,9 @@ impl<'a> CompletionContext<'a> {
             scope,
             db,
             config,
+            position,
             original_token,
             token,
-            position,
             krate,
             expected_type: None,
             name_ref_syntax: None,
@@ -155,30 +154,31 @@ impl<'a> CompletionContext<'a> {
             is_expr: false,
             is_new_item: false,
             dot_receiver: None,
+            dot_receiver_is_ambiguous_float_literal: false,
             is_call: false,
             is_pattern_call: false,
             is_macro_call: false,
             is_path_type: false,
             has_type_args: false,
-            dot_receiver_is_ambiguous_float_literal: false,
             attribute_under_caret: None,
             mod_declaration_under_caret: None,
             unsafe_is_prev: false,
-            in_loop_body: false,
-            ref_pat_parent: false,
-            bind_pat_parent: false,
+            if_is_prev: false,
             block_expr_parent: false,
+            bind_pat_parent: false,
+            ref_pat_parent: false,
+            in_loop_body: false,
             has_trait_parent: false,
             has_impl_parent: false,
             inside_impl_trait_block: false,
             has_field_list_parent: false,
             trait_as_prev_sibling: false,
             impl_as_prev_sibling: false,
-            if_is_prev: false,
             is_match_arm: false,
             has_item_list_or_source_file_parent: false,
             for_is_prev2: false,
             fn_is_prev: false,
+            incomplete_let: false,
             locals,
         };
 
@@ -270,6 +270,10 @@ impl<'a> CompletionContext<'a> {
                 .filter(|module| module.item_list().is_none());
         self.for_is_prev2 = for_is_prev2(syntax_element.clone());
         self.fn_is_prev = fn_is_prev(syntax_element.clone());
+        self.incomplete_let =
+            syntax_element.ancestors().take(6).find_map(ast::LetStmt::cast).map_or(false, |it| {
+                it.syntax().text_range().end() == syntax_element.text_range().end()
+            });
     }
 
     fn fill(
@@ -507,7 +511,7 @@ impl<'a> CompletionContext<'a> {
 }
 
 fn find_node_with_range<N: AstNode>(syntax: &SyntaxNode, range: TextRange) -> Option<N> {
-    find_covering_element(syntax, range).ancestors().find_map(N::cast)
+    syntax.covering_element(range).ancestors().find_map(N::cast)
 }
 
 fn is_node<N: AstNode>(node: &SyntaxNode) -> bool {