X-Git-Url: https://ginac.de/ginac.git//ginac.git?a=blobdiff_plain;ds=sidebyside;f=ginac%2Fprint.h;h=27f69afa934074720e7e05c141b788e79b39abb5;hb=ec64e556734484ca3c518e6de95b26be61bedee7;hp=675219b664580de6aa8d03fb1050ccdd1220dc30;hpb=9413cd14faaf2980de3884915e22a5beda068ecc;p=ginac.git

diff --git a/ginac/print.h b/ginac/print.h
index 675219b6..27f69afa 100644
--- a/ginac/print.h
+++ b/ginac/print.h
@@ -3,7 +3,7 @@
  *  Definition of helper classes for expression output. */
 
 /*
- *  GiNaC Copyright (C) 1999-2016 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 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
@@ -59,24 +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() \
@@ -92,7 +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() {}