/** @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) 1999-2001 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 "basic.h"
-#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
-#endif // ndef NO_NAMESPACE_GINAC
class fail : public basic
{
GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
-
- // other constructors
- // none
-
- // functions overriding virtual functions from bases classes
-public:
- basic * duplicate() const;
- void print(std::ostream & os, unsigned upper_precedence=0) const;
- void printraw(std::ostream & os) const;
-protected:
- int compare_same_type(const basic & other) const;
- unsigned return_type(void) const { return return_types::noncommutative_composite; };
- // new virtual functions which can be overridden by derived classes
- // none
+ // functions overriding virtual functions from base classes
+protected:
+ unsigned return_type() const { return return_types::noncommutative_composite; };
// non-virtual functions in this class
- // none
-
- // member variables
- // none
+protected:
+ void do_print(const print_context & c, unsigned level) const;
};
-#ifndef NO_NAMESPACE_GINAC
+/** 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;
+}
+
} // namespace GiNaC
-#endif // ndef NO_NAMESPACE_GINAC
#endif // ndef __GINAC_FAIL_H__