1 files changed, 69 insertions, 0 deletions
diff --git a/asl/status.hpp b/asl/status.hpp
index 2e4bae5..4638493 100644
--- a/asl/status.hpp
+++ b/asl/status.hpp
@@ -6,8 +6,77 @@
 namespace asl
 {
 
+enum class status_code : uint8_t
+{
+    ok               = 0,
+    unknown          = 1,
+    internal         = 2,
+    runtime          = 3,
+    invalid_argument = 4,
+};
+
 class status
 {
+    void* m_payload{};
+
+    static constexpr void* status_to_payload(status_code code)
+    {
+        return code == status_code::ok ? nullptr : bit_cast<void*>(((uintptr_t)code << 1) | 1);
+    }
+
+    static constexpr status_code payload_to_status(void* payload)
+    {
+        return (status_code)(bit_cast<uintptr_t>(payload) >> 1);
+    }
+
+    status_code code_internal() const;
+    
+public:
+    constexpr status() = default;
+    
+    explicit constexpr status(status_code code)
+        : m_payload{status_to_payload(code)}
+    {}
+
+    status(status_code code, string_view msg);
+
+    constexpr status(status&& other)
+        : m_payload{exchange(other.m_payload, nullptr)}
+    {}
+
+    constexpr status& operator=(status&& other)
+    {
+        if (&other != this)
+        {
+            swap(m_payload, other.m_payload);
+        }
+        return *this;
+    }
+
+    // @Todo Copy constructor & assignment
+
+    constexpr bool ok() const
+    {
+        return m_payload == nullptr || code() == status_code::ok;
+    }
+
+    // NOLINTNEXTLINE(*-explicit-conversions)
+    constexpr operator bool() const { return ok(); }
+
+    constexpr status_code code() const
+    {
+        if (m_payload == nullptr)
+        {
+            return status_code::ok;
+        }
+        
+        if ((bit_cast<uintptr_t>(m_payload) & 1) != 0)
+        {
+            return payload_to_status(m_payload);
+        }
+
+        return code_internal();
+    }
 };
 
 } // namespace asl