/** @file fail.h
*
- * Interface to class signaling failure of operation. Considered obsolete all
- * this stuff ought to be replaced by exceptions. */
+ * Interface to class signaling failure of operation. Considered obsolete
+ * somewhat obsolete (most of this can be replaced by exceptions). */
/*
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2003 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
#ifndef __GINAC_FAIL_H__
#define __GINAC_FAIL_H__
-#include <ginac/basic.h>
+#include "basic.h"
-#ifndef NO_GINAC_NAMESPACE
namespace GiNaC {
-#endif // ndef NO_GINAC_NAMESPACE
class fail : public basic
{
-// member functions
-
- // default constructor, destructor, copy constructor assignment operator and helpers
-public:
- fail();
- ~fail();
- fail(fail const & other);
- fail const & operator=(fail const & other);
-protected:
- void copy(fail const & other);
- void destroy(bool call_parent);
-
- // other constructors
- // none
-
- // functions overriding virtual functions from bases classes
+ GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
+
+ // functions overriding virtual functions from base classes
public:
- basic * duplicate() const;
- void print(ostream & os, unsigned upper_precedence=0) const;
- void printraw(ostream & os) const;
+ void print(const print_context & c, unsigned level = 0) const;
protected:
- int compare_same_type(basic const & other) const;
- unsigned return_type(void) const { return return_types::noncommutative_composite; };
-
- // new virtual functions which can be overridden by derived classes
- // none
-
- // non-virtual functions in this class
- // none
-
-// member variables
-// none
+ unsigned return_type(void) const { return return_types::noncommutative_composite; };
};
-// global constants
-
-extern const fail some_fail;
-extern type_info const & typeid_fail;
+/** Specialization of is_exactly_a<fail>(obj) for fail objects. */
+template<> inline bool is_exactly_a<fail>(const basic & obj)
+{
+ return obj.tinfo()==TINFO_fail;
+}
-#ifndef NO_GINAC_NAMESPACE
} // namespace GiNaC
-#endif // ndef NO_GINAC_NAMESPACE
#endif // ndef __GINAC_FAIL_H__