#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;
// non-virtual functions in this class
public:
+ /** Like print(), but dispatch to the specified class. Can be used by
+ * implementations of print methods to dispatch to the method of the
+ * superclass.
+ *
+ * @see basic::print */
+ template <class T>
+ void print_dispatch(const print_context & c, unsigned level) const
+ {
+ print_dispatch(T::get_class_info_static(), c, level);
+ }
+
+ void print_dispatch(const registered_class_info & ri, const print_context & c, unsigned level) const;
+
ex subs_one_level(const exmap & m, unsigned options) const;
ex diff(const symbol & s, unsigned nth = 1) const;
int compare(const basic & other) const;
protected:
void ensure_if_modifiable() const;
+
+ void do_print(const print_context & c, unsigned level) const;
+ void do_print_tree(const print_tree & c, unsigned level) const;
+ void do_print_python_repr(const print_python_repr & c, unsigned level) const;
// member variables
protected:
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>
};
template <class T>
inline bool is_exactly_a(const basic &obj)
{
- return obj.tinfo() == T::reg_info.options.get_id();
+ return obj.tinfo() == T::get_class_info_static().options.get_id();
}
} // namespace GiNaC