LibLine: Do a whole bunch of internal error propagation

1 files changed, 9 insertions, 7 deletions

diff --git a/Userland/Libraries/LibLine/SuggestionDisplay.h b/Userland/Libraries/LibLine/SuggestionDisplay.h
index 113df0ccfb..99ee3ae1e4 100644
--- a/Userland/Libraries/LibLine/SuggestionDisplay.h
+++ b/Userland/Libraries/LibLine/SuggestionDisplay.h
@@ -18,20 +18,22 @@ class Editor;
 class SuggestionDisplay {
 public:
     virtual ~SuggestionDisplay() = default;
-    virtual void display(SuggestionManager const&) = 0;
-    virtual bool cleanup() = 0;
+    virtual ErrorOr<void> display(SuggestionManager const&) = 0;
+    virtual ErrorOr<bool> cleanup() = 0;
     virtual void finish() = 0;
     virtual void set_initial_prompt_lines(size_t) = 0;
 
-    void redisplay(SuggestionManager const& manager, size_t lines, size_t columns)
+    ErrorOr<void> redisplay(SuggestionManager const& manager, size_t lines, size_t columns)
     {
         if (m_is_showing_suggestions) {
-            cleanup();
+            TRY(cleanup());
             set_vt_size(lines, columns);
-            display(manager);
+            TRY(display(manager));
         } else {
             set_vt_size(lines, columns);
         }
+
+        return {};
     }
 
     virtual void set_vt_size(size_t lines, size_t columns) = 0;
@@ -62,8 +64,8 @@ public:
     {
     }
     virtual ~XtermSuggestionDisplay() override = default;
-    virtual void display(SuggestionManager const&) override;
-    virtual bool cleanup() override;
+    virtual ErrorOr<void> display(SuggestionManager const&) override;
+    virtual ErrorOr<bool> cleanup() override;
     virtual void finish() override
     {
         m_pages.clear();