* Interface to GiNaC's index carrying objects. */
/*
- * 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 "exprseq.h"
-#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
-#endif // ndef NO_NAMESPACE_GINAC
-/** Base class for non-commutative indexed objects */
+
+/** Base class for objects with indices. */
class indexed : public exprseq
{
GINAC_DECLARE_REGISTERED_CLASS(indexed, exprseq)
-// member functions
-
- // default constructor, destructor, copy constructor assignment operator and helpers
-public:
- indexed();
- ~indexed();
- indexed(const indexed & other);
- const indexed & operator=(const indexed & other);
-protected:
- void copy(const indexed & other);
- void destroy(bool call_parent);
-
// other constructors
public:
indexed(const ex & i1);
// functions overriding virtual functions from base classes
public:
- basic * duplicate() 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;
void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence) const;
bool info(unsigned inf) const;
- exvector get_indices(void) const;
+
+ /** Return the vector of indices on this object. */
+ exvector get_indices(void) const {return seq;}
+
protected:
ex derivative(const symbol & s) const;
- int compare_same_type(const basic & other) const;
bool is_equal_same_type(const basic & other) const;
unsigned return_type(void) const;
unsigned return_type_tinfo(void) const;
// none
};
-// global constants
-
-extern const indexed some_indexed;
-extern const std::type_info & typeid_indexed;
-
// utility functions
inline const indexed &ex_to_indexed(const ex &e)
{
return static_cast<const indexed &>(*e.bp);
}
-#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
-#endif // ndef NO_NAMESPACE_GINAC
#endif // ndef __GINAC_INDEXED_H__