* Interface to GiNaC's wildcard objects. */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2008 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
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __GINAC_WILDCARD_H__
namespace GiNaC {
-/** This class acts as a wildcard for subs(), match() and has(). An integer
- * label is used to identify different wildcards. */
+/** This class acts as a wildcard for subs(), match(), has() and find(). An
+ * integer label is used to identify different wildcards. */
class wildcard : public basic
{
GINAC_DECLARE_REGISTERED_CLASS(wildcard, basic)
// functions overriding virtual functions from base classes
public:
- void print(const print_context & c, unsigned level = 0) const;
- unsigned calchash(void) const;
bool match(const ex & pattern, lst & repl_lst) const;
+protected:
+ unsigned calchash() const;
+
// non-virtual functions in this class
public:
- unsigned get_label(void) const {return label;}
+ unsigned get_label() const {return label;}
+
+protected:
+ 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
private:
// utility functions
-/** Return the wildcard object handled by an ex. Deprecated: use ex_to<wildcard>().
- * This is unsafe: you need to check the type first. */
-inline const wildcard &ex_to_wildcard(const ex &e)
-{
- return static_cast<const wildcard &>(*e.bp);
-}
-
-/** Specialization of is_exactly_a<wildcard>(obj) for wildcard objects. */
-template<> inline bool is_exactly_a<wildcard>(const basic & obj)
-{
- return obj.tinfo()==TINFO_wildcard;
-}
-
/** Create a wildcard object with the specified label. */
inline ex wild(unsigned label = 0)
{
return wildcard(label);
}
+/** Check whether x has a wildcard anywhere as a subexpression. */
+bool haswild(const ex & x);
+
} // namespace GiNaC
#endif // ndef __GINAC_WILDCARD_H__