/*
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Authors : Benjamin GAUTHIER - 24 Mar 2004
 *            Joseph BANINO
 *            Olivier JACQUES
 *            Richard GAYRAUD
 *            From Hewlett Packard Company.
 *           
 */

#ifndef _CVARIABLE
#define _CVARIABLE

#include <string>
#include <map>
#include <sys/types.h>
#include <regex.h>

typedef std::map<std::string, int> str_int_map;
typedef std::map<int, char *> int_str_map;
typedef std::map<int, int> int_int_map;

#define BUFFER_SIZE 512
#define MAX_MATCHING_EXPR 50
#define REGEXP_PARAMS REG_EXTENDED

enum T_VarType
{
  E_VT_REGEXP = 0,
  E_VT_DOUBLE,
  E_VT_BOOL,
  E_VT_STRING,
  E_VT_UNDEFINED
};

class CCallVariable
{
public:
  bool isSet();
  bool isDouble();
  bool isBool();
  bool isRegExp();
  bool isString();

  // WARNING : setMatchingValue does't allocate the memory for the matching value
  // but the destructor free the memory
  void setMatchingValue(char* P_matchingValue);
  char* getMatchingValue();

  /* When the variable is used for a string, these functions should be called. */
  // WARNING : setString does't allocate the memory for the matching value
  // but the destructor free the memory
  void setString(char *s);
  char *getString();

  /* When the variable is used for a double, these functions should be called. */
  void setDouble(double val);
  double getDouble();

  /* When the variable is used for a bool, these functions should be called. */
  void setBool(bool val);
  bool getBool();

  /* Cast this to a double variable, return the result in newValue. */
  bool toDouble(double *newValue);

  // constructor and destructor
  CCallVariable();
  ~CCallVariable();

private:
  T_VarType	M_type;
  char*		M_matchingValue;
  int		M_nbOfMatchingValue;
  double	M_double;
  char*		M_stringValue;
  bool		M_bool;
};

class AllocVariableTable;

class VariableTable
{
public:
	VariableTable(VariableTable *parent, int size);
	VariableTable(AllocVariableTable *src);
	VariableTable *getTable();
	void putTable();
	int size;

	CCallVariable *getVar(int i);
protected:
	virtual ~VariableTable();
	void expand(int size);
	int count;
	int level;
	CCallVariable **variableTable;
	VariableTable *parent;
};

class AllocVariableTable : public VariableTable
{
public:
  AllocVariableTable(AllocVariableTable *av_parent);
  ~AllocVariableTable();
  int find(const char *name, bool allocate);
  char *getName(int i);
  void validate();
  void dump();
private:
  AllocVariableTable *av_parent;
  str_int_map  variableMap;
  int_str_map  variableRevMap;
  int_int_map  variableReferences;
};

void clear_int_str(int_str_map m);
void clear_str_int(str_int_map m);
void clear_int_int(int_int_map m);

#endif