initial

modules/network/include/io/Write.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "NetworkError.hpp"
+#include <tl/expected.hpp>
+#include <limits>
+#include <span>
+#include <string>
+#include <type_traits>
+
+namespace tw::net {
+
+template<typename T>
+class Write {
+public:
+    virtual ~Write() = default;
+
+    virtual tl::expected<size_t, NetworkError> write(std::span<T> data) = 0;
+
+    tl::expected<size_t, NetworkError> write(const std::string& data) {
+        return write(std::span<std::byte>((std::byte*)(data.c_str()), data.size()));
+    }
+
+    template<typename TNum,
+        typename std::enable_if_t<std::is_integral<TNum>::value || std::is_enum<TNum>::value, bool> = true>
+    tl::expected<size_t, NetworkError> write(TNum data) {
+        return write(std::as_writable_bytes(std::span{&data, 1}));
+    }
+
+    virtual size_t flush() = 0;
+};
+
+}