Add postfix completion for format-like string literals

1 files changed, 10 insertions, 1 deletions

diff --git a/crates/ide/src/completion/completion_context.rs b/crates/ide/src/completion/completion_context.rs
index 671b13328..842d1987c 100644
--- a/crates/ide/src/completion/completion_context.rs
+++ b/crates/ide/src/completion/completion_context.rs
@@ -74,6 +74,8 @@ pub(crate) struct CompletionContext<'a> {
     pub(super) is_pattern_call: bool,
     /// If this is a macro call, i.e. the () are already there.
     pub(super) is_macro_call: bool,
+    /// If this is a string literal, like "lorem ipsum".
+    pub(super) is_string_literal: bool,
     pub(super) is_path_type: bool,
     pub(super) has_type_args: bool,
     pub(super) attribute_under_caret: Option<ast::Attr>,
@@ -156,6 +158,7 @@ impl<'a> CompletionContext<'a> {
             is_call: false,
             is_pattern_call: false,
             is_macro_call: false,
+            is_string_literal: false,
             is_path_type: false,
             has_type_args: false,
             dot_receiver_is_ambiguous_float_literal: false,
@@ -469,7 +472,13 @@ impl<'a> CompletionContext<'a> {
                     }
                 } else {
                     false
-                }
+                };
+
+            self.is_string_literal = if let Some(ast::Expr::Literal(l)) = &self.dot_receiver {
+                matches!(l.kind(), ast::LiteralKind::String { .. })
+            } else {
+                false
+            };
         }
         if let Some(method_call_expr) = ast::MethodCallExpr::cast(parent) {
             // As above