GINAC_DECLARE_REGISTERED_CLASS declares duplicate() and compare_same_type(),

[ginac.git] / ginac / registrar.h

diff --git a/ginac/registrar.h b/ginac/registrar.h
index f665ccd87cd830969479262469a659fdb7e87148..2737325bb8fbb91a59590d46c85f551a72f5733c 100644 (file)
--- a/ginac/registrar.h
+++ b/ginac/registrar.h
@@ -70,7 +70,10 @@ public: \
        virtual void archive(archive_node &n) const; \
        static ex unarchive(const archive_node &n, const lst &sym_lst);
 
-/** Macro for inclusion in the declaration of each registered class. */
+/** Macro for inclusion in the declaration of each registered class.
+ *  It declares some functions that are common to all classes derived
+ *  from 'basic' as well as all required stuff for the GiNaC class
+ *  registry (mainly needed for archiving). */
 #define GINAC_DECLARE_REGISTERED_CLASS(classname, supername) \
        GINAC_DECLARE_REGISTERED_CLASS_NO_CTORS(classname, supername) \
 public: \
@@ -78,16 +81,21 @@ public: \
        ~classname(); \
        classname(const classname & other); \
        const classname & operator=(const classname & other); \
+       basic * duplicate() const; \
 protected: \
        void copy(const classname & other); \
        void destroy(bool call_parent); \
+       int compare_same_type(const basic & other) const; \
 private:
 
 #define GINAC_IMPLEMENT_REGISTERED_CLASS_NO_CTORS(classname, supername) \
        registered_class_info classname::reg_info(#classname, #supername, TINFO_##classname, &classname::unarchive); \
        const char *classname::class_name(void) const {return reg_info.name;}
 
-/** Macro for inclusion in the implementation of each registered class. */
+/** Macro for inclusion in the implementation of each registered class.
+ *  It implements some functions that are the same in all classes derived
+ *  from 'basic' (such as the destructor, the copy constructor and the
+ *  assignment operator). */
 #define GINAC_IMPLEMENT_REGISTERED_CLASS(classname, supername) \
        GINAC_IMPLEMENT_REGISTERED_CLASS_NO_CTORS(classname, supername) \
 classname::~classname() \
@@ -108,8 +116,14 @@ const classname & classname::operator=(const classname & other) \
                copy(other); \
        } \
        return *this; \
+} \
+basic * classname::duplicate() const \
+{ \
+       debugmsg(#classname " duplicate", LOGLEVEL_DUPLICATE); \
+       return new classname(*this); \
 }
 
+
 /** Find TINFO_* key by class name. */
 extern unsigned int find_tinfo_key(const std::string &class_name);