#include "callback.h"

namespace ns3 {

CallbackValue::CallbackValue ()
  : m_value ()
{}
CallbackValue::CallbackValue (const CallbackBase &base)
  : m_value (base)
{}
CallbackValue::~CallbackValue ()
{}
void 
CallbackValue::Set (CallbackBase base)
{
  m_value = base;
}
Ptr<AttributeValue> 
CallbackValue::Copy (void) const
{
  return Create<CallbackValue> (m_value);
}
std::string 
CallbackValue::SerializeToString (Ptr<const AttributeChecker> checker) const
{
  std::ostringstream oss;
  oss << PeekPointer (m_value.GetImpl ());
  return oss.str ();
}
bool 
CallbackValue::DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker)
{
  return false;
}

ATTRIBUTE_CHECKER_IMPLEMENT (Callback);

#if (__GNUC__ >= 3)

#include <stdlib.h>
#include <cxxabi.h>
#include "log.h"

std::string
CallbackBase::Demangle(const std::string& mangled)
{
    int status;
    char* demangled = abi::__cxa_demangle(mangled.c_str(),
                                          NULL, NULL, &status);

    std::string ret;
    if (status == 0) {
        NS_ASSERT(demangled);
        ret = demangled;
    }
    else if (status == -1) {
        NS_LOG_UNCOND("Callback demangling failed: Memory allocation failure occured.");
        ret = mangled;
    }
    else if (status == -2) {
        NS_LOG_UNCOND("Callback demangling failed: Mangled name is not a valid under the C++ ABI mangling rules.");
        ret = mangled;
    }
    else if (status == -3) {
        NS_LOG_UNCOND("Callback demangling failed: One of the arguments is invalid.");
        ret = mangled;
    }
    else {
        NS_LOG_UNCOND("Callback demangling failed: status " << status);
        ret = mangled;
    }

    if (demangled) {
        free(demangled);
    }
    return ret;
}

#else

std::string
CallbackBase::Demangle(const std::string& mangled)
{
    return mangled;
}

#endif

} // namespace ns3