[feature] to_list added for classfile

include/cvm/classfile/classfile.hpp

@@ -34,6 +34,7 @@ class Classfile
   uint64_t readLong(const uint8_t *bytes, size_t &offset);
   double readDouble(const uint8_t *bytes, size_t &offset);
   Classfile parseClassfile(const uint8_t *classBytes, size_t fileSize);
+  std::string to_string();
 };
 
 #endif  //__CLASSFILE_HPP__

src/classfile/classfile.cpp

@@ -1,5 +1,7 @@
 #include "../../include/cvm/classfile/classfile.hpp"
 
+#include <spdlog/fmt/ostr.h>
+
 #include <cstring>
 
 #include "../../include/cvm/log.hpp"
@@ -47,6 +49,25 @@ double Classfile::readDouble(const uint8_t* bytes, size_t& offset)
   spdlog::debug("Read double: {}, new offset: {}", value, offset);
   return value;
 }
+
+
+std::string Classfile::to_string()
+{
+  std::ostringstream oss;
+  oss << "Magic: " << std::hex << magic << std::dec << "\n"
+      << "Minor Version: " << minor_version << "\n"
+      << "Major Version: " << major_version << "\n"
+      << "Constant Pool Count: " << constant_pool_count << "\n"
+      << "Access Flags: " << access_flags << "\n"
+      << "This Class: " << this_class << "\n"
+      << "Super Class: " << super_class << "\n"
+      << "Interfaces Count: " << interfaces_count << "\n"
+      << "Fields Count: " << fields_count << "\n"
+      << "Methods Count: " << methods_count << "\n"
+      << "Attributes Count: " << attributes_count;
+  return oss.str();
+}
+
 /**
  * Helper methods for validating etc.
  */
@@ -195,5 +216,8 @@ Classfile Classfile::parseClassfile(const uint8_t* classBytes, size_t fileSize)
   cf.super_class = readShort(classBytes, offset);
   cf.interfaces_count = readShort(classBytes, offset);
 
+  std::string classFileString = cf.to_string();
+  spdlog::info("The Parsed Classfile:\n{}", classFileString);
+
   return cf;
 }