* Interface to GiNaC's color indices. */
/*
- * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
*
* 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
#include <string>
#include <vector>
-#include <ginac/idx.h>
-#include <ginac/ex.h>
+#include "idx.h"
+#include "ex.h"
-#ifndef NO_GINAC_NAMESPACE
namespace GiNaC {
-#endif // ndef NO_GINAC_NAMESPACE
+
+/** Class of indices for color algebra objects, to tell them apart from
+ * other index families like Lorentz indices. The color indices are the
+ * indices of the SU(3) generators T_a, so they lie in the range of 0 to 7.
+ * Note that this kind of index is different from the indices carried by
+ * elements of a specific matrix representation of su(3). Such indices are
+ * always hidden in our implementation and we are not concerned with them. */
class coloridx : public idx
{
- GINAC_DECLARE_REGISTERED_CLASS(coloridx, idx)
-
- friend class color;
-
-// member functions
+ GINAC_DECLARE_REGISTERED_CLASS(coloridx, idx)
- // default constructor, destructor, copy constructor assignment operator and helpers
-public:
- coloridx();
- ~coloridx();
- coloridx (const coloridx & other);
- const coloridx & operator=(const coloridx & other);
-protected:
- void copy(const coloridx & other);
- void destroy(bool call_parent);
+ friend class color;
- // other constructors
+ // other constructors
public:
- explicit coloridx(bool cov);
- explicit coloridx(const string & n, bool cov=false);
- explicit coloridx(const char * n, bool cov=false);
- explicit coloridx(unsigned v, bool cov=false);
+ explicit coloridx(bool cov);
+ explicit coloridx(const std::string & n, bool cov=false);
+ explicit coloridx(const char * n, bool cov=false);
+ explicit coloridx(unsigned v, bool cov=false);
- // functions overriding virtual functions from bases classes
+ // functions overriding virtual functions from bases classes
public:
- basic * duplicate() const;
- void printraw(ostream & os) const;
- void printtree(ostream & os, unsigned indent) const;
- void print(ostream & os, unsigned upper_precedence=0) const;
- bool info(unsigned inf) const;
+ void printraw(std::ostream & os) const;
+ void printtree(std::ostream & os, unsigned indent) const;
+ void print(std::ostream & os, unsigned upper_precedence=0) const;
+ bool info(unsigned inf) const;
- // new virtual functions which can be overridden by derived classes
- // none
+ // new virtual functions which can be overridden by derived classes
+ // none
- // non-virtual functions in this class
- // none
+ // non-virtual functions in this class
+ // none
- // member variables
- // none
+ // member variables
+ // none
};
-// global constants
-
-extern const coloridx some_coloridx;
-extern const type_info & typeid_coloridx;
-
// utility functions
inline const coloridx &ex_to_coloridx(const ex &e)
{
return static_cast<const coloridx &>(*e.bp);
}
-#ifndef NO_GINAC_NAMESPACE
} // namespace GiNaC
-#endif // ndef NO_GINAC_NAMESPACE
#endif // ndef __GINAC_COLORIDX_H__