Suppress compiler warnings about inconsistent override.

[ginac.git] / ginac / print.h

diff --git a/ginac/print.h b/ginac/print.h
index e2ba2509292084155c7c00bc0b4c1d48a8f8a12b..8f5656753f481981f0a7cc26e3b4a10f9a571289 100644 (file)
--- a/ginac/print.h
+++ b/ginac/print.h
@@ -3,7 +3,7 @@
  *  Definition of helper classes for expression output. */
 
 /*
- *  GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2016 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
@@ -20,18 +20,17 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef __GINAC_PRINT_H__
-#define __GINAC_PRINT_H__
+#ifndef GINAC_PRINT_H
+#define GINAC_PRINT_H
+
+#include "class_info.h"
 
 #include <iosfwd>
-#include <string>
 #include <memory>
-
-#include "class_info.h"
+#include <string>
 
 namespace GiNaC {
 
-
 /** This class stores information about a registered print_context class. */
 class print_context_options {
 public:
@@ -60,24 +59,33 @@ public:
 };
 
 
-/** Macro for inclusion in the declaration of a print_context class.
- *  It declares some functions that are common to all classes derived
- *  from 'print_context' as well as all required stuff for the GiNaC
- *  registry. */
-#define GINAC_DECLARE_PRINT_CONTEXT(classname, supername) \
+/** Common part of GINAC_DECLARE_PRINT_CONTEXT_BASE and GINAC_DECLARE_PRINT_CONTEXT_DERIVED. */
+#define GINAC_DECLARE_PRINT_CONTEXT_COMMON(classname)  \
 public: \
-       typedef supername inherited; \
        friend class function_options; \
        friend class registered_class_options; \
-public: \
        static const GiNaC::print_context_class_info &get_class_info_static(); \
+       classname();
+
+#define GINAC_DECLARE_PRINT_CONTEXT_BASE(classname) \
+       GINAC_DECLARE_PRINT_CONTEXT_COMMON(classname) \
        virtual const GiNaC::print_context_class_info &get_class_info() const { return classname::get_class_info_static(); } \
        virtual const char *class_name() const { return classname::get_class_info_static().options.get_name(); } \
-       \
-       classname(); \
        virtual classname * duplicate() const { return new classname(*this); } \
 private:
 
+/** Macro for inclusion in the declaration of a print_context class.
+ *  It declares some functions that are common to all classes derived
+ *  from 'print_context' as well as all required stuff for the GiNaC
+ *  registry. */
+#define GINAC_DECLARE_PRINT_CONTEXT(classname, supername) \
+       GINAC_DECLARE_PRINT_CONTEXT_COMMON(classname) \
+       typedef supername inherited; \
+       const GiNaC::print_context_class_info &get_class_info() const override { return classname::get_class_info_static(); } \
+       const char *class_name() const override { return classname::get_class_info_static().options.get_name(); } \
+       classname * duplicate() const override { return new classname(*this); } \
+private:
+
 /** Macro for inclusion in the implementation of each print_context class. */
 #define GINAC_IMPLEMENT_PRINT_CONTEXT(classname, supername) \
 const GiNaC::print_context_class_info &classname::get_class_info_static() \
@@ -93,7 +101,7 @@ extern unsigned next_print_context_id;
 /** Base class for print_contexts. */
 class print_context
 {
-       GINAC_DECLARE_PRINT_CONTEXT(print_context, void)
+       GINAC_DECLARE_PRINT_CONTEXT_BASE(print_context)
 public:
        print_context(std::ostream &, unsigned options = 0);
        virtual ~print_context() {}
@@ -180,7 +188,7 @@ public:
 /** Check if obj is a T, including base classes. */
 template <class T>
 inline bool is_a(const print_context & obj)
-{ return dynamic_cast<const T *>(&obj) != 0; }
+{ return dynamic_cast<const T *>(&obj) != nullptr; }
 
 
 class basic;
@@ -200,9 +208,9 @@ public:
        typedef void (*F)(const T &, const C &, unsigned);
 
        print_ptrfun_handler(F f_) : f(f_) {}
-       print_ptrfun_handler *duplicate() const { return new print_ptrfun_handler(*this); }
+       print_ptrfun_handler *duplicate() const override { return new print_ptrfun_handler(*this); }
 
-       void operator()(const basic & obj, const print_context & c, unsigned level) const
+       void operator()(const basic & obj, const print_context & c, unsigned level) const override
        {
                // Call the supplied function
                f(dynamic_cast<const T &>(obj), dynamic_cast<const C &>(c), level);
@@ -219,9 +227,9 @@ public:
        typedef void (T::*F)(const C & c, unsigned level) const;
 
        print_memfun_handler(F f_) : f(f_) {}
-       print_memfun_handler *duplicate() const { return new print_memfun_handler(*this); }
+       print_memfun_handler *duplicate() const override { return new print_memfun_handler(*this); }
 
-       void operator()(const basic & obj, const print_context & c, unsigned level) const
+       void operator()(const basic & obj, const print_context & c, unsigned level) const override
        {
                // Call the supplied member function
                return (dynamic_cast<const T &>(obj).*f)(dynamic_cast<const C &>(c), level);
@@ -239,9 +247,9 @@ private:
  *  implements the actual function call. */
 class print_functor {
 public:
-       print_functor() : impl(0) {}
+       print_functor() : impl(nullptr) {}
        print_functor(const print_functor & other) : impl(other.impl.get() ? other.impl->duplicate() : 0) {}
-       print_functor(std::auto_ptr<print_functor_impl> impl_) : impl(impl_) {}
+       print_functor(std::unique_ptr<print_functor_impl> impl_) : impl(std::move(impl_)) {}
 
        template <class T, class C>
        print_functor(void f(const T &, const C &, unsigned)) : impl(new print_ptrfun_handler<T, C>(f)) {}
@@ -253,7 +261,7 @@ public:
        {
                if (this != &other) {
                        print_functor_impl *p = other.impl.get();
-                       impl.reset(p ? other.impl->duplicate() : 0);
+                       impl.reset(p ? other.impl->duplicate() : nullptr);
                }
                return *this;
        }
@@ -266,10 +274,10 @@ public:
        bool is_valid() const { return impl.get(); }
 
 private:
-       std::auto_ptr<print_functor_impl> impl;
+       std::unique_ptr<print_functor_impl> impl;
 };
 
 
 } // namespace GiNaC
 
-#endif // ndef __GINAC_BASIC_H__
+#endif // ndef GINAC_BASIC_H