#pragma once
#ifndef __HASHTABLE_H__
#define __HASHTABLE_H__

#ifndef __ARRAY_H__
#include <array.h>
#endif

struct THash_bucket;
struct THash_entry;

class THash_table : public TContainer
{
  TArray* _buckets;
  long _items;

  // container iterator
  int _curr_bucket, _curr_item;

protected:
  THash_bucket& bucket(size_t b);
  void add(TObject* value, const char* key, unsigned int hash);
  THash_entry* lookup_ex(const char* key, unsigned int& hash) const;
  THash_entry* lookup(const char* key) const;
  void expand();

public: // Container interface
  virtual TObject* first_item();
  virtual TObject* last_item();
  virtual TObject* succ_item();
  virtual TObject* pred_item();
  virtual long objects() const { return _items; }

public:
  bool add(const char* key, TObject* value, bool force = false);
  bool add(const char* key, const TObject& value, bool force = false);
  void steal(THash_entry& e);
  bool is_key(const char* key) const { return lookup(key) != NULL; }
  TObject* get(const char* key);
  TObject* remove(const char* key);
  bool destroy(const char* key);
  size_t items() const { return _items; }

  THash_table(size_t sz = 0);
  ~THash_table();
};

#endif