From 5a3f5582baa9666902b39eafdf63e65e20718547 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 23 Nov 2021 14:17:05 +0100
Subject: [PATCH] LibCore: Add try_create(...) helper to all Core::Object
 derived classes

This is like construct(...) but returns ErrorOr<NonnullRefPtr<T>>.
---
 Userland/Libraries/LibCore/Object.h | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/Userland/Libraries/LibCore/Object.h b/Userland/Libraries/LibCore/Object.h
index 51c35c8e77..cb627ba9a3 100644
--- a/Userland/Libraries/LibCore/Object.h
+++ b/Userland/Libraries/LibCore/Object.h
@@ -63,14 +63,18 @@ enum class TimerShouldFireWhenNotVisible {
     Yes
 };
 
-#define C_OBJECT(klass)                                                \
-public:                                                                \
-    virtual const char* class_name() const override { return #klass; } \
-    template<typename Klass = klass, class... Args>                    \
-    static inline NonnullRefPtr<klass> construct(Args&&... args)       \
-    {                                                                  \
-        auto obj = adopt_ref(*new Klass(forward<Args>(args)...));      \
-        return obj;                                                    \
+#define C_OBJECT(klass)                                                                  \
+public:                                                                                  \
+    virtual const char* class_name() const override { return #klass; }                   \
+    template<typename Klass = klass, class... Args>                                      \
+    static NonnullRefPtr<klass> construct(Args&&... args)                                \
+    {                                                                                    \
+        return adopt_ref(*new Klass(forward<Args>(args)...));                            \
+    }                                                                                    \
+    template<typename Klass = klass, class... Args>                                      \
+    static ErrorOr<NonnullRefPtr<klass>> try_create(Args&&... args)                      \
+    {                                                                                    \
+        return adopt_nonnull_ref_or_enomem(new (nothrow) Klass(forward<Args>(args)...)); \
     }
 
 #define C_OBJECT_ABSTRACT(klass) \