Reduce some duplication

4 files changed, 4 insertions, 6 deletions

diff --git a/crates/ra_assists/src/assists/add_explicit_type.rs b/crates/ra_assists/src/assists/add_explicit_type.rs
index ddda1a0f2..562a09685 100644
--- a/crates/ra_assists/src/assists/add_explicit_type.rs
+++ b/crates/ra_assists/src/assists/add_explicit_type.rs
@@ -40,7 +40,7 @@ pub(crate) fn add_explicit_type(ctx: AssistCtx<impl HirDatabase>) -> Option<Assi
     }
     // Infer type
     let db = ctx.db;
-    let analyzer = hir::SourceAnalyzer::new(db, ctx.frange.file_id, stmt.syntax(), None);
+    let analyzer = ctx.source_analyzer(stmt.syntax(), None);
     let ty = analyzer.type_of(db, &expr)?;
     // Assist not applicable if the type is unknown
     if is_unknown(&ty) {
diff --git a/crates/ra_assists/src/assists/add_missing_impl_members.rs b/crates/ra_assists/src/assists/add_missing_impl_members.rs
index 41de23921..91af161ee 100644
--- a/crates/ra_assists/src/assists/add_missing_impl_members.rs
+++ b/crates/ra_assists/src/assists/add_missing_impl_members.rs
@@ -100,8 +100,7 @@ fn add_missing_impl_members_inner(
     let impl_item_list = impl_node.item_list()?;
 
     let trait_def = {
-        let file_id = ctx.frange.file_id;
-        let analyzer = hir::SourceAnalyzer::new(ctx.db, file_id, impl_node.syntax(), None);
+        let analyzer = ctx.source_analyzer(impl_node.syntax(), None);
 
         resolve_target_trait_def(ctx.db, &analyzer, &impl_node)?
     };
diff --git a/crates/ra_assists/src/assists/fill_match_arms.rs b/crates/ra_assists/src/assists/fill_match_arms.rs
index 2b74f355c..b851c2082 100644
--- a/crates/ra_assists/src/assists/fill_match_arms.rs
+++ b/crates/ra_assists/src/assists/fill_match_arms.rs
@@ -47,8 +47,7 @@ pub(crate) fn fill_match_arms(ctx: AssistCtx<impl HirDatabase>) -> Option<Assist
 
     let expr = match_expr.expr()?;
     let enum_def = {
-        let file_id = ctx.frange.file_id;
-        let analyzer = hir::SourceAnalyzer::new(ctx.db, file_id, expr.syntax(), None);
+        let analyzer = ctx.source_analyzer(expr.syntax(), None);
         resolve_enum_def(ctx.db, &analyzer, &expr)?
     };
     let variant_list = enum_def.variant_list()?;
diff --git a/crates/ra_assists/src/assists/inline_local_variable.rs b/crates/ra_assists/src/assists/inline_local_variable.rs
index a7fd9b6d2..18a34502c 100644
--- a/crates/ra_assists/src/assists/inline_local_variable.rs
+++ b/crates/ra_assists/src/assists/inline_local_variable.rs
@@ -45,7 +45,7 @@ pub(crate) fn inline_local_varialbe(ctx: AssistCtx<impl HirDatabase>) -> Option<
     } else {
         let_stmt.syntax().text_range()
     };
-    let analyzer = hir::SourceAnalyzer::new(ctx.db, ctx.frange.file_id, bind_pat.syntax(), None);
+    let analyzer = ctx.source_analyzer(bind_pat.syntax(), None);
     let refs = analyzer.find_all_refs(&bind_pat);
 
     let mut wrap_in_parens = vec![true; refs.len()];