refactor(furvm): improve serialization

Refs: #12

furvm/include/furvm/detail/serialization.hpp

@@ -0,0 +1,25 @@
+#ifndef FURVM_DETAIL_SERIALIZATION_HPP
+#define FURVM_DETAIL_SERIALIZATION_HPP
+
+#include <cstdint>
+#include <ostream>
+#include <string>
+
+namespace furvm {
+namespace detail {
+
+std::ostream& serialize(std::ostream& os, std::int8_t value);
+std::ostream& serialize(std::ostream& os, std::int16_t value);
+std::ostream& serialize(std::ostream& os, std::int32_t value);
+std::ostream& serialize(std::ostream& os, std::int64_t value);
+std::ostream& serialize(std::ostream& os, std::uint8_t value);
+std::ostream& serialize(std::ostream& os, std::uint16_t value);
+std::ostream& serialize(std::ostream& os, std::uint32_t value);
+std::ostream& serialize(std::ostream& os, std::uint64_t value);
+
+std::ostream& serialize(std::ostream& os, const std::string& value);
+
+} // namespace detail
+} // namespace furvm
+
+#endif // FURVM_DETAIL_SERIALIZATION_HPP

furvm/include/furvm/module.hpp

@@ -5,6 +5,7 @@
 #include "furvm/fwd.hpp"
 #include "furvm/handle.hpp"
 
+#include <ostream>
 #include <string>
 #include <unordered_map>
 #include <utility>
@@ -17,6 +18,8 @@ class mod {
     friend class serializer;
 public:
     using bytecode_t = std::vector<byte>; /**< An alias to a vector of bytes. */
+
+    static constexpr char MAGIC[4] = { 'F', 'u', 'r', 'M' }; /** Furvm module file magic. */
 public:
     /**
      * @brief Construct a new module.
@@ -91,6 +94,8 @@ public:
     }
 
     void erase_function(function_id id) { m_functions.erase(id); }
+public:
+    std::ostream& serialize(std::ostream& os) const;
 private:
     bytecode_t m_bytecode;
 

furvm/include/furvm/serializer.hpp

@@ -1,20 +0,0 @@
-#ifndef FURVM_SERIALIZER_HPP
-#define FURVM_SERIALIZER_HPP
-
-#include "furvm/fwd.hpp"
-
-#include <ostream>
-
-namespace furvm {
-
-class serializer {
-public:
-    static constexpr byte          MODULE_MAGIC[4] = { 'F', 'u', 'r', 'M' };
-    static constexpr std::uint32_t VERSION         = 0;
-public:
-    static bool serialize_module(std::ostream& os, const mod_p& mod);
-};
-
-} // namespace furvm
-
-#endif // FURVM_SERIALIZER_HPP