// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_wroot_base_leaf
#define tools_wroot_base_leaf

#include "named"

#include "cids"
#include "../scast"

namespace tools {
namespace wroot {

class base_leaf : public virtual ibo {
  static unsigned int kNullTag() {return 0;}
public:
  static cid id_class() {return base_leaf_cid();}
  virtual void* cast(cid a_class) const {
    if(void* p = cmp_cast<base_leaf>(this,a_class)) {return p;}
    else return 0;
  }
  virtual cid id_cls() const {return id_class();}
public: //ibo
  virtual bool stream(buffer& a_buffer) const {
    unsigned int c;
    if(!a_buffer.write_version(2,c)) return false;
    if(!Named_stream(a_buffer,m_name,m_title)) return false;
    if(!a_buffer.write(m_length)) return false;
    if(!a_buffer.write(m_length_type)) return false;
    uint32 fOffset = 0;
    if(!a_buffer.write(fOffset)) return false;
    if(!a_buffer.write(m_is_range)) return false;
    bool fIsUnsigned = false;
    if(!a_buffer.write(fIsUnsigned)) return false;

    if(m_leaf_count) {
      if(!a_buffer.write_object(*m_leaf_count)) return false;
    } else {
      if(!a_buffer.write(kNullTag())) return false;
    }

    if(!a_buffer.set_byte_count(c)) return false;
    return true;
  }
public:
  virtual bool fill_buffer(buffer&) const = 0;
public:
  base_leaf(std::ostream& a_out,const std::string& a_name,const std::string& a_title)
  :m_out(a_out)
  ,m_name(a_name)
  ,m_title(a_title)

  ,m_length(0)
  ,m_length_type(0)
  ,m_leaf_count(0)
  ,m_is_range(false)
  {
  }
  virtual ~base_leaf(){
  }
protected:
  base_leaf(const base_leaf& a_from)
  :ibo(a_from)
  ,m_out(a_from.m_out)
  ,m_length(0)
  ,m_length_type(0)
  ,m_leaf_count(0)
  ,m_is_range(false)
  {}
  base_leaf& operator=(const base_leaf&){return *this;}
public:
  const std::string& name() const {return m_name;}
  void set_title(const std::string& a_value) {m_title = a_value;}
  uint32 length() const {return m_length;}
  void set_length(uint32 a_value) {m_length = a_value;}
  void set_is_range(bool a_value) {m_is_range = a_value;}
protected:
  std::ostream& m_out;
protected: //Named
  std::string m_name;
  std::string m_title;
  uint32 m_length;          //  Number of fixed length elements
  uint32 m_length_type;     //  Number of bytes for this data type
  ibo* m_leaf_count;
  bool m_is_range;
};

}}

#endif
