orange / source / orange / pythonvars.hpp

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#include "root.hpp"
#include "values.hpp"
#include "vars.hpp"

#include "c2py.hpp"

#define PYTHONVAR 7

class ORANGE_API TPythonValue : public TSomeValue {

  PyObject *value;

  TPythonValue(const TPythonValue &other);
  TPythonValue(PyObject *value);

  TPythonValue &operator =(const TPythonValue &other);


  virtual int  compare(const TSomeValue &v) const;
  virtual bool compatible(const TSomeValue &v) const;

class ORANGE_API TPythonVariable : public TVariable {

  bool usePickle; //P tells whether to use pickle for saving to/loading from files
  bool useSomeValue; //P tells whether the Variable will operate on Value or SomeValue (default)

  TValue DC_somevalue;
  TValue DK_somevalue;

  TPythonVariable(const string &aname);

  bool isOverloaded(char *method) const;

  virtual const TValue &DC() const;
  virtual const TValue &DK() const;
  virtual TValue specialValue(int) const;

  virtual void val2str(const TValue &val, string &str) const;
  virtual void str2val(const string &valname, TValue &valu);
  virtual void str2val_add(const string &valname, TValue &valu);

  virtual void val2filestr(const TValue &val, string &str, const TExample &) const;
  virtual void filestr2val(const string &valname, TValue &valu, TExample &);

  virtual bool   firstValue(TValue &val) const;
  virtual bool   nextValue(TValue &val) const;
  virtual TValue randomValue(const int &rand=-1);

  // Returns the number of different values, -1 if it cannot be done (for example, if variable is continuous)
  virtual int  noOfValues() const;

// steals a reference!
  TValue toValue(PyObject *pyvalue) const;

  TValue toNoneValue(const signed char &valueType) const;
  void toValue(PyObject *pyvalue, TValue &val) const;

  PyObject *toPyObject(const TValue &valu) const;

class ORANGE_API TPythonValueSpecial : public TOrange {

  int valueType; //P value type

  TPythonValueSpecial(const int &vt)
  : valueType(vt)