From 8db26a7350aad53ed73a127f9b8eb6ef15bf0be1 Mon Sep 17 00:00:00 2001
From: Steven Le Rouzic <steven.lerouzic@gmail.com>
Date: Thu, 11 Apr 2024 23:49:22 +0200
Subject: Implement Status

---
 deimos/core/status.cpp | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 deimos/core/status.cpp

(limited to 'deimos/core/status.cpp')

diff --git a/deimos/core/status.cpp b/deimos/core/status.cpp
new file mode 100644
index 0000000..ed1a665
--- /dev/null
+++ b/deimos/core/status.cpp
@@ -0,0 +1,70 @@
+#include "deimos/core/status.h"
+
+#include "deimos/core/api_registry.h"
+#include "deimos/core/allocator.h"
+
+static deimos::AllocatorApi* allocator_api;
+
+namespace deimos
+{
+
+Status::Status(StatusCode code, StringView message)
+{
+    if (code == StatusCode::kOk)
+    {
+        m_rep = CodeToRep(StatusCode::kOk);
+    }
+    else
+    {
+        void* ptr = allocator_api->system->Allocate((int64_t)sizeof(StatusRep) + message.size() + 1);
+        auto* rep = new(ptr) StatusRep;
+
+        char* message_ptr = (char*)ptr + sizeof(StatusRep); // NOLINT
+        MemoryCopy(message_ptr, message.data(), message.size());
+        message_ptr[message.size()] = '\0'; // NOLINT
+
+        rep->ref_count = 1;
+        rep->code = code;
+        rep->message = StringView(message_ptr, message.size());
+
+        m_rep = std::bit_cast<uintptr_t>(rep);
+        Ensures((m_rep & 1U) == 0);
+    }
+}
+
+void Status::Ref() const
+{
+    if (!IsInline())
+    {
+        auto* rep = std::bit_cast<StatusRep*>(m_rep);
+
+        Expects(rep->ref_count > 0);
+        rep->ref_count += 1;
+    }
+}
+
+void Status::Unref() const
+{
+    if (!IsInline())
+    {
+        auto* rep = std::bit_cast<StatusRep*>(m_rep);
+
+        Expects(rep->ref_count > 0);
+        rep->ref_count -= 1;
+
+        if (rep->ref_count == 0)
+        {
+            deimos_StaticAssert(std::is_trivially_destructible_v<StatusRep>);
+            allocator_api->system->Free(
+                rep, (int64_t)sizeof(StatusRep) + rep->message.size() + 1);
+        }
+    }
+}
+
+void InitializeStatus(ApiRegistry* api_registry)
+{
+    allocator_api = api_registry->Get<AllocatorApi>();
+}
+
+} // namespace deimos
+
-- 
cgit