1 files changed, 93 insertions, 0 deletions
diff --git a/src/zencore/except.cpp b/src/zencore/except.cpp
new file mode 100644
index 000000000..2749d1984
--- /dev/null
+++ b/src/zencore/except.cpp
@@ -0,0 +1,93 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include <fmt/format.h>
+#include <zencore/except.h>
+
+namespace zen {
+
+#if ZEN_PLATFORM_WINDOWS
+
+class WindowsException : public std::exception
+{
+public:
+	WindowsException(std::string_view Message)
+	{
+		m_hResult = HRESULT_FROM_WIN32(GetLastError());
+		m_Message = Message;
+	}
+
+	WindowsException(HRESULT hRes, std::string_view Message)
+	{
+		m_hResult = hRes;
+		m_Message = Message;
+	}
+
+	WindowsException(HRESULT hRes, const char* Message, const char* Detail)
+	{
+		m_hResult = hRes;
+
+		ExtendableStringBuilder<128> msg;
+		msg.Append(Message);
+		msg.Append(" (detail: '");
+		msg.Append(Detail);
+		msg.Append("')");
+
+		m_Message = msg.c_str();
+	}
+
+	virtual const char* what() const override { return m_Message.c_str(); }
+
+private:
+	std::string m_Message;
+	HRESULT		m_hResult;
+};
+
+void
+ThrowSystemException([[maybe_unused]] HRESULT hRes, [[maybe_unused]] std::string_view Message)
+{
+	if (HRESULT_FACILITY(hRes) == FACILITY_WIN32)
+	{
+		throw std::system_error(std::error_code(hRes & 0xffff, std::system_category()), std::string(Message));
+	}
+	else
+	{
+		throw WindowsException(hRes, Message);
+	}
+}
+
+#endif	// ZEN_PLATFORM_WINDOWS
+
+void
+ThrowSystemError(uint32_t ErrorCode, std::string_view Message)
+{
+	throw std::system_error(std::error_code(ErrorCode, std::system_category()), std::string(Message));
+}
+
+std::string
+GetLastErrorAsString()
+{
+	return GetSystemErrorAsString(zen::GetLastError());
+}
+
+std::string
+GetSystemErrorAsString(uint32_t ErrorCode)
+{
+	return std::error_code(ErrorCode, std::system_category()).message();
+}
+
+#if defined(__cpp_lib_source_location)
+void
+ThrowLastErrorImpl(std::string_view Message, const std::source_location& Location)
+{
+	throw std::system_error(std::error_code(zen::GetLastError(), std::system_category()),
+							fmt::format("{}({}): {}", Location.file_name(), Location.line(), Message));
+}
+#else
+void
+ThrowLastError(std::string_view Message)
+{
+	throw std::system_error(std::error_code(zen::GetLastError(), std::system_category()), std::string(Message));
+}
+#endif
+
+}  // namespace zen