* Interface to GiNaC's ABC. */
/*
- * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2004 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 "flags.h"
#include "tinfos.h"
+#include "ptr.h"
#include "assertion.h"
#include "registrar.h"
class relational;
class archive_node;
class print_context;
-template <class> class ptr;
typedef std::vector<ex> exvector;
typedef std::map<ex, ex, ex_is_less> exmap;
};
-/** This class is the ABC (abstract base class) of GiNaC's class hierarchy.
- * It is responsible for the reference counting. */
-class basic
+/** This class is the ABC (abstract base class) of GiNaC's class hierarchy. */
+class basic : public refcounted
{
GINAC_DECLARE_REGISTERED_CLASS_NO_CTORS(basic, void)
friend class ex;
- friend class ptr<basic>;
// default constructor, destructor, copy constructor and assignment operator
protected:
- basic() : tinfo_key(TINFO_basic), flags(0), refcount(0) {}
+ basic() : tinfo_key(TINFO_basic), flags(0) {}
public:
/** basic destructor, virtual because class ex will delete objects of
* derived classes via a basic*. */
virtual ~basic()
{
- GINAC_ASSERT((!(flags & status_flags::dynallocated))||(refcount==0));
+ GINAC_ASSERT((!(flags & status_flags::dynallocated)) || (get_refcount() == 0));
}
basic(const basic & other);
const basic & operator=(const basic & other);
protected:
/** Constructor with specified tinfo_key (used by derived classes instead
* of the default constructor to avoid assigning tinfo_key twice). */
- basic(unsigned ti) : tinfo_key(ti), flags(0), refcount(0) {}
+ basic(unsigned ti) : tinfo_key(ti), flags(0) {}
// new virtual functions which can be overridden by derived classes
public: // only const functions please (may break reference counting)
// rational functions
virtual ex normal(exmap & repl, exmap & rev_lookup, int level = 0) const;
- virtual ex to_rational(lst &repl_lst) const;
- virtual ex to_polynomial(lst &repl_lst) const;
+ virtual ex to_rational(exmap & repl) const;
+ virtual ex to_polynomial(exmap & repl) const;
// polynomial algorithms
virtual numeric integer_content() const;
virtual unsigned return_type() const;
virtual unsigned return_type_tinfo() const;
-protected: // functions that should be called from class ex only
+ // complex conjugation
+ virtual ex conjugate() const;
+
+ // functions that should be called from class ex only
+protected:
virtual int compare_same_type(const basic & other) const;
virtual bool is_equal_same_type(const basic & other) const;
unsigned tinfo_key; ///< typeinfo
mutable unsigned flags; ///< of type status_flags
mutable unsigned hashvalue; ///< hash value
-private:
- size_t refcount; ///< reference counter, managed by ptr<basic>
};