/*
 * ExprItems.h - class definitions for ExprItem's.
 *
 * Copyright (C) 1992, Christoph Streit (streit@iam.unibe.ch)
 *                     University of Berne, Switzerland
 * All rights reserved.
 *
 * This software may be freely copied, modified, and redistributed
 * provided that this copyright notice is preserved on all copies.
 *
 * You may not distribute this software, in whole or in part, as part of
 * any commercial product without the express consent of the authors.
 *
 * There is no warranty or other guarantee of fitness of this software
 * for any purpose.  It is provided solely "as is".
 *
 */

#ifndef ExprItems_H
# define ExprItems_H

#include <math.h>
#include "mathutilities.h"
#include "Expression.h"
#include "Name.h"

//___________________________________________________________ Variable

class Variable : public ExprItem
{
public:
  Variable(const Name&, Value*);
  ~Variable();

  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();

private: 
  Value *theValue;
  Name varname;  // we need the name for the print function
};

//___________________________________________________________ Uminus
// unary minus

class Uminus : public ExprItem
{
public:
  Uminus();
  ~Uminus();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Not

class Not : public ExprItem
{
public:
  Not();
  ~Not();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Or

class Or : public ExprItem
{
public:
  Or();
  ~Or();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ And

class And : public ExprItem
{
public:
  And();
  ~And();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Neq

class Neq : public ExprItem
{
public:
  Neq();
  ~Neq();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Eq

class Eq : public ExprItem
{
public:
  Eq();
  ~Eq();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Lt

class Lt : public ExprItem
{
public:
  Lt();
  ~Lt();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Leq

class Leq : public ExprItem
{
public:
  Leq();
  ~Leq();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Gt

class Gt : public ExprItem
{
public:
  Gt();
  ~Gt();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Geq

class Geq : public ExprItem
{
public:
  Geq();
  ~Geq();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Add

class Add : public ExprItem
{
public:
  Add();
  ~Add();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Sub

class Sub : public ExprItem
{
public:
  Sub();
  ~Sub();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Mul

class Mul : public ExprItem
{
public:
  Mul();
  ~Mul();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Div

class Div : public ExprItem
{
public:
  Div();
  ~Div();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Mod

class Mod : public ExprItem
{
public:
  Mod();
  ~Mod();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Sin

class Sin : public ExprItem
{
public:
  Sin();
  ~Sin();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Cos

class Cos : public ExprItem
{
public:
  Cos();
  ~Cos();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Tan

class Tan : public ExprItem
{
public:
  Tan();
  ~Tan();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Asin

class Asin : public ExprItem
{
public:
  Asin();
  ~Asin();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Acos

class Acos : public ExprItem
{
public:
  Acos();
  ~Acos();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Atan

class Atan : public ExprItem
{
public:
  Atan();
  ~Atan();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Abs

class Abs : public ExprItem
{
public:
  Abs();
  ~Abs();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Sqrt

class Sqrt : public ExprItem
{
public:
  Sqrt();
  ~Sqrt();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Pow

class Pow : public ExprItem
{
public:
  Pow();
  ~Pow();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Exp

class Exp : public ExprItem
{
public:
  Exp();
  ~Exp();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Log

class Log : public ExprItem
{
public:
  Log();
  ~Log();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Log10

class Log10 : public ExprItem
{
public:
  Log10();
  ~Log10();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Rand

class Rand : public ExprItem
{
public:
  Rand();
  ~Rand();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

//___________________________________________________________ Gauss

class Gauss : public ExprItem
{
public:
  Gauss();
  ~Gauss();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();

private:
  int Nrand;
  real GaussAdd, GaussFac;
};

//___________________________________________________________ If

class If : public ExprItem
{
public:
  If();
  ~If();
  void process(ValueStack*);
  void print(ValueStack*);
  int params();
  ExprItem* copy();
};

class Discrete;

#endif // ExprItems_H