Attachment #271 for bug #284

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NS_LOG_COMPONENT_DEFINE ("Config");

namespace ns3 {

namespace Config {

MatchContainer::MatchContainer ()
{}
MatchContainer::MatchContainer (const std::vector<Ptr<Object> > &objects, 
                                const std::vector<std::string> &contexts,
                                std::string path)
  : m_objects (objects),
    m_contexts (contexts),
    m_path (path)
{}
MatchContainer::Iterator 
MatchContainer::Begin (void) const
{
  return m_objects.begin ();
}
MatchContainer::Iterator 
MatchContainer::End (void) const
{
  return m_objects.end ();
}
uint32_t 
MatchContainer::GetN (void) const
{
  return m_objects.size ();
}
Ptr<Object> 
MatchContainer::Get (uint32_t i) const
{
  return m_objects[i];
}
std::string 
MatchContainer::GetMatchedPath (uint32_t i) const
{
  return m_contexts[i];
}
std::string 
MatchContainer::GetPath (void) const
{
  return m_path;
}

void 
MatchContainer::Set (std::string name, const AttributeValue &value)
{
  for (Iterator tmp = Begin (); tmp != End (); ++tmp)
    {
      Ptr<Object> object = *tmp;
      object->SetAttribute (name, value);
    }
}
void 
MatchContainer::Connect (std::string name, const CallbackBase &cb)
{
  NS_ASSERT (m_objects.size () == m_contexts.size ());
  for (uint32_t i = 0; i < m_objects.size (); ++i)
    {
      Ptr<Object> object = m_objects[i];
      std::string ctx = m_contexts[i] + name;
      object->TraceConnect (name, ctx, cb);
    }
}
void 
MatchContainer::ConnectWithoutContext (std::string name, const CallbackBase &cb)
{
  for (Iterator tmp = Begin (); tmp != End (); ++tmp)
    {
      Ptr<Object> object = *tmp;
      object->TraceConnectWithoutContext (name, cb);
    }
}
void 
MatchContainer::Disconnect (std::string name, const CallbackBase &cb)
{
  NS_ASSERT (m_objects.size () == m_contexts.size ());
  for (uint32_t i = 0; i < m_objects.size (); ++i)
    {
      Ptr<Object> object = m_objects[i];
      std::string ctx = m_contexts[i] + name;
      object->TraceDisconnect (name, ctx, cb);
    }
}
void 
MatchContainer::DisconnectWithoutContext (std::string name, const CallbackBase &cb)
{
  for (Iterator tmp = Begin (); tmp != End (); ++tmp)
    {
      Ptr<Object> object = *tmp;
      object->TraceDisconnectWithoutContext (name, cb);
    }
}

} // namespace Config

class ArrayMatcher
{


  void Resolve (Ptr<Object> root);
private:
  void Canonicalize (void);
  void DoResolve (std::string path, Ptr<Object> root);
  void DoArrayResolve (std::string path, const ObjectVectorValue &vector);
  void DoResolveOne (Ptr<Object> object);
  std::string GetResolvedPath (void) const;
  virtual void DoOne (Ptr<Object> object, std::string path) = 0;
  std::vector<std::string> m_workStack;
  std::string m_path;
};

Resolver::Resolver (std::string path)
  : m_path (path)
{
  Canonicalize ();
}
Resolver::~Resolver ()
{}
void
Resolver::Canonicalize (void)
{
  // ensure that we start and end with a '/'
  std::string::size_type tmp = m_path.find ("/");
  if (tmp != 0)
    {
      m_path = "/" + m_path;
    }
  tmp = m_path.find_last_of ("/", 1);
  if (tmp != (m_path.size () - 1))
    {
      m_path = m_path + "/";
    }
}

void 
Resolver::Resolve (Ptr<Object> root)

}

std::string
Resolver::GetResolvedPath (void) const
{
  std::string fullPath = "/";
  for (std::vector<std::string>::const_iterator i = m_workStack.begin (); i != m_workStack.end (); i++)
    {
      fullPath += *i + "/";
    }
  fullPath += "/" + name;
  return fullPath;
}

void 
Resolver::DoResolveOne (Ptr<Object> object)
{
  NS_LOG_DEBUG ("resolved="<<GetResolvedPath ());
  DoOne (object, GetResolvedPath ());
}

void
Resolver::DoResolve (std::string path, Ptr<Object> root)
{
  NS_LOG_FUNCTION (path << root);
  std::string::size_type tmp;
  tmp = path.find ("/");
  NS_ASSERT (tmp == 0);
      NS_FATAL_ERROR ("path does not start with a \"/\": \""<<path<<"\"");
      return;
    }
  std::string::size_type next = path.find ("/", 1);
  if (next == std::string::npos)
    {
      DoResolveOne (root);
      NS_LOG_DEBUG ("handle attr="<<attributeName);
      DoOne (root, GetResolvedPath (attributeName), attributeName);
      return;
    }
  std::string item = path.substr (1, next-1);

    {
      // This is a call to GetObject
      std::string tidString = item.substr (1, item.size () - 1);
      NS_LOG_DEBUG ("GetObject="<<tidString<<" on path="<<GetResolvedPath ());
      TypeId tid = TypeId::LookupByName (tidString);
      Ptr<Object> object = root->GetObject<Object> (tid);
      if (object == 0)
	{
	  NS_LOG_DEBUG ("GetObject ("<<tidString<<") failed on path="<<GetResolvedPath ());
	  return;
	}
      m_workStack.push_back (item);

      struct TypeId::AttributeInfo info;
      if (!tid.LookupAttributeByName (item, &info))
	{
	  NS_LOG_DEBUG ("Requested item="<<item<<" does not exist on path="<<GetResolvedPath ());
	  return;
	}
      // attempt to cast to a pointer checker.
      const PointerChecker *ptr = dynamic_cast<const PointerChecker *> (PeekPointer (info.checker));
      if (ptr != 0)
	{
	  NS_LOG_DEBUG ("GetAttribute(ptr)="<<item<<" on path="<<GetResolvedPath ());
          PointerValue ptr;
          root->GetAttribute (item, ptr);
	  Ptr<Object> object = ptr.Get<Object> ();
	  if (object == 0)
	    {
	      NS_LOG_ERROR ("Requested object name=\""<<item<<
			    "\" exists on path=\""<<GetResolvedPath ()<<"\""
			    " but is null.");
	      return;
	    }

      const ObjectVectorChecker *vectorChecker = dynamic_cast<const ObjectVectorChecker *> (PeekPointer (info.checker));
      if (vectorChecker != 0)
	{
	  NS_LOG_DEBUG ("GetAttribute(vector)="<<item<<" on path="<<GetResolvedPath ());
	  ObjectVectorValue vector;
          root->GetAttribute (item, vector);
	  m_workStack.push_back (item);

Resolver::DoArrayResolve (std::string path, const ObjectVectorValue &vector)
{
  NS_ASSERT (path != "");
  std::string::size_type tmp;
  tmp = path.find ("/");
  NS_ASSERT (tmp == 0);
      NS_FATAL_ERROR ("path does not start with a \"/\": \""<<path<<"\"");
      return;
    }
  std::string::size_type next = path.find ("/", 1);
  if (next == std::string::npos)
    {
      NS_FATAL_ERROR ("vector path includes no index data on path=\""<<path<<"\"");
      return;
    }
  std::string item = path.substr (1, next-1);
  std::string pathLeft = path.substr (next, path.size ()-next);

  void Connect (std::string path, const CallbackBase &cb);
  void DisconnectWithoutContext (std::string path, const CallbackBase &cb);
  void Disconnect (std::string path, const CallbackBase &cb);
  Config::MatchContainer LookupMatches (std::string path);

  void RegisterRootNamespaceObject (Ptr<Object> obj);
  void UnregisterRootNamespaceObject (Ptr<Object> obj);

  Ptr<Object> GetRootNamespaceObject (uint32_t i) const;
  
private:
  void ParsePath (std::string path, std::string *root, std::string *leaf) const;
  typedef std::vector<Ptr<Object> > Roots;
  Roots m_roots;
};

void 
ConfigImpl::ParsePath (std::string path, std::string *root, std::string *leaf) const
{
  std::string::size_type slash = path.find_last_of ("/");
  NS_ASSERT (slash != std::string::npos);
  *root = path.substr (0, slash);
  *leaf = path.substr (slash+1, path.size ()-(slash+1));
  NS_LOG_FUNCTION (path << *root << *leaf);
}

void 
ConfigImpl::Set (std::string path, const AttributeValue &value)
{
  std::string root, leaf;
  ParsePath (path, &root, &leaf);
  Config::MatchContainer container = LookupMatches (root);
  container.Set (leaf, value);
}
void 
ConfigImpl::ConnectWithoutContext (std::string path, const CallbackBase &cb)
{
  std::string root, leaf;
  ParsePath (path, &root, &leaf);
  Config::MatchContainer container = LookupMatches (root);
  container.ConnectWithoutContext (leaf, cb);
}
void 
ConfigImpl::DisconnectWithoutContext (std::string path, const CallbackBase &cb)
{
  std::string root, leaf;
  ParsePath (path, &root, &leaf);
  Config::MatchContainer container = LookupMatches (root);
  container.DisconnectWithoutContext (leaf, cb);
}
void 
ConfigImpl::Connect (std::string path, const CallbackBase &cb)
{
  std::string root, leaf;
  ParsePath (path, &root, &leaf);
  Config::MatchContainer container = LookupMatches (root);
  container.Connect (leaf, cb);
}
void 
ConfigImpl::Disconnect (std::string path, const CallbackBase &cb)
{
  std::string root, leaf;
  ParsePath (path, &root, &leaf);
  Config::MatchContainer container = LookupMatches (root);
  container.Disconnect (leaf, cb);
}

Config::MatchContainer 
ConfigImpl::LookupMatches (std::string path)
{
  NS_LOG_FUNCTION (path);
  class LookupMatchesResolver : public Resolver 
  {
  public:
    LookupMatchesResolver (std::string path)
      : Resolver (path)
    {}
    virtual void DoOne (Ptr<Object> object, std::string path) {
      m_objects.push_back (object);
      m_contexts.push_back (path);
    }
    std::vector<Ptr<Object> > m_objects;
    std::vector<std::string> m_contexts;
  } resolver = LookupMatchesResolver (path);
  for (Roots::const_iterator i = m_roots.begin (); i != m_roots.end (); i++)
    {
      resolver.Resolve (*i);
    }
  return Config::MatchContainer (resolver.m_objects, resolver.m_contexts, path);
}

ConfigImpl::ConnectWithoutContext (std::string path, const CallbackBase &cb)
{
  class ConnectResolver : public Resolver 
  {
  public:
    ConnectResolver (std::string path, const CallbackBase &cb)
      : Resolver (path),
	m_cb (cb) {}
  private:
    virtual void DoOne (Ptr<Object> object, std::string path, std::string name) {
      object->TraceConnectWithoutContext (name, m_cb);
    }
    CallbackBase m_cb;
  } resolver = ConnectResolver (path, cb);
  for (Roots::const_iterator i = m_roots.begin (); i != m_roots.end (); i++)
    {
      resolver.Resolve (*i);
    }
}
void 
ConfigImpl::DisconnectWithoutContext (std::string path, const CallbackBase &cb)
{
  class DisconnectResolver : public Resolver 
  {
  public:
    DisconnectResolver (std::string path, const CallbackBase &cb)
      : Resolver (path),
	m_cb (cb) {}
  private:
    virtual void DoOne (Ptr<Object> object, std::string path, std::string name) {
      object->TraceDisconnectWithoutContext (name, m_cb);
    }
    CallbackBase m_cb;
  } resolver = DisconnectResolver (path, cb);
  for (Roots::const_iterator i = m_roots.begin (); i != m_roots.end (); i++)
    {
      resolver.Resolve (*i);
    }
}
void 
ConfigImpl::Connect (std::string path, const CallbackBase &cb)
{
  class ConnectWithContextResolver : public Resolver 
  {
  public:
    ConnectWithContextResolver (std::string path, const CallbackBase &cb)
      : Resolver (path),
	m_cb (cb) {}
  private:
    virtual void DoOne (Ptr<Object> object, std::string path, std::string name) {
      object->TraceConnect (name, path, m_cb);
    }
    CallbackBase m_cb;
  } resolver = ConnectWithContextResolver (path, cb);
  for (Roots::const_iterator i = m_roots.begin (); i != m_roots.end (); i++)
    {
      resolver.Resolve (*i);
    }
}
void 
ConfigImpl::Disconnect (std::string path, const CallbackBase &cb)
{
  class DisconnectWithContextResolver : public Resolver 
  {
  public:
    DisconnectWithContextResolver (std::string path, const CallbackBase &cb)
      : Resolver (path),
	m_cb (cb) {}
  private:
    virtual void DoOne (Ptr<Object> object, std::string path, std::string name) {
      object->TraceDisconnect (name, path, m_cb);
    }
    CallbackBase m_cb;
  } resolver = DisconnectWithContextResolver (path, cb);
  for (Roots::const_iterator i = m_roots.begin (); i != m_roots.end (); i++)
    {
      resolver.Resolve (*i);
    }
}
void 
ConfigImpl::RegisterRootNamespaceObject (Ptr<Object> obj)
{

Disconnect (std::string path, const CallbackBase &cb)
{
  Singleton<ConfigImpl>::Get ()->Disconnect (path, cb);
}
Config::MatchContainer LookupMatches (std::string path)
{
  return Singleton<ConfigImpl>::Get ()->LookupMatches (path);
}

void RegisterRootNamespaceObject (Ptr<Object> obj)





#include "ptr.h"
#include <string>
#include <vector>

namespace ns3 {


 */
void Disconnect (std::string path, const CallbackBase &cb);

class MatchContainer
{
public:
  typedef std::vector<Ptr<Object> >::const_iterator Iterator;
  MatchContainer ();
  MatchContainer (const std::vector<Ptr<Object> > &objects, 
                  const std::vector<std::string> &contexts, 
                  std::string path);

  MatchContainer::Iterator Begin (void) const;
  MatchContainer::Iterator End (void) const;
  uint32_t GetN (void) const;
  Ptr<Object> Get (uint32_t i) const;
  std::string GetMatchedPath (uint32_t i) const;
  std::string GetPath (void) const;

  void Set (std::string name, const AttributeValue &value);
  void Connect (std::string name, const CallbackBase &cb);
  void ConnectWithoutContext (std::string name, const CallbackBase &cb);
  void Disconnect (std::string name, const CallbackBase &cb);
  void DisconnectWithoutContext (std::string name, const CallbackBase &cb);
private:
  std::vector<Ptr<Object> > m_objects;
  std::vector<std::string> m_contexts;
  std::string m_path;
};

MatchContainer LookupMatches (std::string path);

/**
 * \param obj a new root object
 *

Return to bug 284