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nci/suif/suif2b/j2s/j2s_runtime/rt_UStringHashTable.h

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/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// rt_UStringHashTable.h

#ifndef RT_USTRINGHASHTABLE_H
#define RT_USTRINGHASHTABLE_H


struct StringChainElement : public ChainElement {
  JObject   *copyOfString;
};

/*
  Represents a hashtable of references to java.lang.String
  instances.

  An instance of this class is used to provide the
  basis for java.lang.String.intern() semantics, which
  are to return a unique java.lang.String instance for
  a specified java.lang.String.

  */
class UStringHashTable : public UHashTable {
public:
  UStringHashTable(int numBuckets);
  virtual ~UStringHashTable();
  
  ChainElement *doNewChainElement ();
  void          doInitChainElement (
    ChainElement *pElm,
    void         *md);

  void     *insert(JObject *String, void * = NULL);
  void     *insert(char *s, void * = NULL);
  void     *insert(aJChar *s, int length, void * = NULL);

  boolean_t check();
  
  void *operator new(size_t);
  
private:
  static int intern_count;

  JObject *my_lookup (JObject *String);
  JObject *_my_lookup (JObject *String, ChainElement **ppElm);
  
  void *   getValue(ChainElement *);
};


#endif // RT_USTRINGHASHTABLE_H

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