4 files changed, 11 insertions, 6 deletions

diff --git a/crates/ra_ide/src/completion/complete_dot.rs b/crates/ra_ide/src/completion/complete_dot.rs
index 5488db43f..532665285 100644
--- a/crates/ra_ide/src/completion/complete_dot.rs
+++ b/crates/ra_ide/src/completion/complete_dot.rs
@@ -48,7 +48,7 @@ fn complete_methods(acc: &mut Completions, ctx: &CompletionContext, receiver: &T
         let mut seen_methods = FxHashSet::default();
         let traits_in_scope = ctx.scope.traits_in_scope();
         receiver.iterate_method_candidates(ctx.db, krate, &traits_in_scope, None, |_ty, func| {
-            if func.self_param(ctx.db).is_some()
+            if func.has_self_param(ctx.db)
                 && ctx.scope.module().map_or(true, |m| func.is_visible_from(ctx.db, m))
                 && seen_methods.insert(func.name(ctx.db))
             {
diff --git a/crates/ra_ide/src/completion/complete_trait_impl.rs b/crates/ra_ide/src/completion/complete_trait_impl.rs
index e3ba7ebc4..d9a0ef167 100644
--- a/crates/ra_ide/src/completion/complete_trait_impl.rs
+++ b/crates/ra_ide/src/completion/complete_trait_impl.rs
@@ -136,7 +136,7 @@ fn add_function_impl(
         .lookup_by(fn_name)
         .set_documentation(func.docs(ctx.db));
 
-    let completion_kind = if func.self_param(ctx.db).is_some() {
+    let completion_kind = if func.has_self_param(ctx.db) {
         CompletionItemKind::Method
     } else {
         CompletionItemKind::Function
diff --git a/crates/ra_ide/src/completion/presentation.rs b/crates/ra_ide/src/completion/presentation.rs
index fc3d1a4bd..9a94ff476 100644
--- a/crates/ra_ide/src/completion/presentation.rs
+++ b/crates/ra_ide/src/completion/presentation.rs
@@ -191,7 +191,7 @@ impl Completions {
         func: hir::Function,
         local_name: Option<String>,
     ) {
-        let has_self_param = func.self_param(ctx.db).is_some();
+        let has_self_param = func.has_self_param(ctx.db);
 
         let name = local_name.unwrap_or_else(|| func.name(ctx.db).to_string());
         let ast_node = func.source(ctx.db).value;
diff --git a/crates/ra_ide/src/syntax_highlighting.rs b/crates/ra_ide/src/syntax_highlighting.rs
index 02b16b13c..d5a5f69cc 100644
--- a/crates/ra_ide/src/syntax_highlighting.rs
+++ b/crates/ra_ide/src/syntax_highlighting.rs
@@ -4,7 +4,7 @@ mod injection;
 #[cfg(test)]
 mod tests;
 
-use hir::{Name, Semantics, VariantDef};
+use hir::{Name, Semantics, TypeRef, VariantDef};
 use ra_ide_db::{
     defs::{classify_name, classify_name_ref, Definition, NameClass, NameRefClass},
     RootDatabase,
@@ -756,8 +756,13 @@ fn is_method_call_unsafe(
     }
 
     let func = sema.resolve_method_call(&method_call_expr)?;
-    if func.self_param(sema.db)?.is_ref {
-        Some(())
+    if func.has_self_param(sema.db) {
+        let params = func.params(sema.db);
+        if matches!(params.into_iter().next(), Some(TypeRef::Reference(..))) {
+            Some(())
+        } else {
+            None
+        }
     } else {
         None
     }