X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Ffail.h;h=82c183901ac353b01c63f1a35125902a35d4635c;hp=40897e2e74417d601ba559453e1152eb1802e718;hb=3c75f4ed241bb89f09fd27b9ec6cd7bd240c2cda;hpb=66c0f31c678e6c1938d637636b230ea376c157c1

diff --git a/ginac/fail.h b/ginac/fail.h
index 40897e2e..82c18390 100644
--- a/ginac/fail.h
+++ b/ginac/fail.h
@@ -1,9 +1,10 @@
 /** @file fail.h
  *
- *  Interface to class signaling failure of operation. Considered obsolete all
- *  this stuff ought to be replaced by exceptions.
- *
- *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *  Interface to class signaling failure of operation. Considered obsolete
+ *  somewhat obsolete (most of this can be replaced by exceptions). */
+
+/*
+ *  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
@@ -23,49 +24,29 @@
 #ifndef __GINAC_FAIL_H__
 #define __GINAC_FAIL_H__
 
-#include <ginac/basic.h>
+#include "basic.h"
+
+namespace GiNaC {
 
 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);
+	GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
+	
+	// functions overriding virtual functions from base classes
 protected:
-    void copy(fail const & other);
-    void destroy(bool call_parent);
-
-    // other constructors
-    // none
+	unsigned return_type() const { return return_types::noncommutative_composite; };
 
-    // functions overriding virtual functions from bases classes
-public:
-    basic * duplicate() const;
-    void printraw(ostream & os) const;
-    void print(ostream & os, unsigned upper_precedence=0) const;
+	// non-virtual functions in this class
 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
+	void do_print(const print_context & c, unsigned level) const;
 };
 
-// global constants
+/** 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;
+}
 
-extern const fail some_fail;
-extern type_info const & typeid_fail;
+} // namespace GiNaC
 
 #endif // ndef __GINAC_FAIL_H__
-
-