X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fregistrar.h;h=fd237fbcbfa92e1fd990f35882b253bb77cd8df2;hp=eda20bb3264d1c72ca3ca941b728bd65cba54efe;hb=c0ba2b239690e1b97aaecb860930b170a2bc1df2;hpb=bd05a471b5e57cdb65458b8d0af54f1743831103

diff --git a/ginac/registrar.h b/ginac/registrar.h
index eda20bb3..fd237fbc 100644
--- a/ginac/registrar.h
+++ b/ginac/registrar.h
@@ -3,7 +3,7 @@
  *  GiNaC's class registrar (for class basic and all classes derived from it). */
 
 /*
- *  GiNaC Copyright (C) 1999-2002 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
@@ -24,50 +24,96 @@
 #define __GINAC_REGISTRAR_H__
 
 #include <string>
+#include <list>
+#include <vector>
+
+#include "class_info.h"
+#include "print.h"
 
 namespace GiNaC {
 
-class registered_class_info;
 class ex;
 class archive_node;
-class lst;
+
+template <template <class> class> class container;
+typedef container<std::list> lst;
 
 
 /** Unarchiving function (static member function of every GiNaC class). */
-typedef ex (*unarch_func)(const archive_node &n, const lst &sym_lst);
+typedef ex (*unarch_func)(const archive_node &n, lst &sym_lst);
+
 
+/** This class stores information about a registered GiNaC class. */
+class registered_class_options {
+public:
+	registered_class_options(const char *n, const char *p, unsigned ti, unarch_func f)
+	 : name(n), parent_name(p), tinfo_key(ti), unarchive(f) {}
+
+	const char *get_name() const { return name; }
+	const char *get_parent_name() const { return parent_name; }
+	unsigned get_id() const { return tinfo_key; }
+	unarch_func get_unarch_func() const { return unarchive; }
+	const std::vector<print_functor> &get_print_dispatch_table() const { return print_dispatch_table; }
+
+	template <class Ctx, class T, class C>
+	registered_class_options & print_func(void f(const T &, const C & c, unsigned))
+	{
+		set_print_func(Ctx::get_class_info_static().options.get_id(), f);
+		return *this;
+	}
 
-/** Head of list of all registered_class_info structures. */
-extern registered_class_info *first_registered_class;
+	template <class Ctx, class T, class C>
+	registered_class_options & print_func(void (T::*f)(const C &, unsigned))
+	{
+		set_print_func(Ctx::get_class_info_static().options.get_id(), f);
+		return *this;
+	}
 
+	template <class Ctx>
+	registered_class_options & print_func(const print_functor & f)
+	{
+		set_print_func(Ctx::get_class_info_static().options.get_id(), f);
+		return *this;
+	}
 
-/** This structure stores information about a registered GiNaC class. */
-struct registered_class_info {
-	registered_class_info(const char *n, const char *s, unsigned int k, unarch_func f)
-		: name(n), super(s), tinfo_key(k), unarchive(f)
+	void set_print_func(unsigned id, const print_functor & f)
 	{
-		// Add structure to list
-		next = first_registered_class;
-		first_registered_class = this;
+		if (id >= print_dispatch_table.size())
+			print_dispatch_table.resize(id + 1);
+		print_dispatch_table[id] = f;
 	}
 
-	registered_class_info *next;  /**< Pointer to next registered_class_info in list. */
-	const char *name;             /**< Class name. */
-	const char *super;            /**< Name of superclass. */
-	unsigned int tinfo_key;       /**< TINFO_* key. */
-	unarch_func unarchive;        /**< Pointer to unarchiving function. */
+private:
+	const char *name;         /**< Class name. */
+	const char *parent_name;  /**< Name of superclass. */
+	unsigned tinfo_key;       /**< TINFO_* key. */
+	unarch_func unarchive;    /**< Pointer to unarchiving function. */
+	std::vector<print_functor> print_dispatch_table; /**< Method table for print() dispatch */
 };
 
+typedef class_info<registered_class_options> registered_class_info;
+
 
 /** Primary macro for inclusion in the declaration of each registered class. */
 #define GINAC_DECLARE_REGISTERED_CLASS_NO_CTORS(classname, supername) \
 public: \
 	typedef supername inherited; \
-	static registered_class_info reg_info; \
-	virtual const char *class_name(void) const; \
-	classname(const archive_node &n, const lst &sym_lst); \
-	virtual void archive(archive_node &n) const; \
-	static ex unarchive(const archive_node &n, const lst &sym_lst);
+private: \
+	static GiNaC::registered_class_info reg_info; \
+public: \
+	static GiNaC::registered_class_info &get_class_info_static() { return reg_info; } \
+	virtual const GiNaC::registered_class_info &get_class_info() const { return classname::get_class_info_static(); } \
+	virtual GiNaC::registered_class_info &get_class_info() { return classname::get_class_info_static(); } \
+	virtual const char *class_name() const { return classname::get_class_info_static().options.get_name(); } \
+	\
+	classname(const GiNaC::archive_node &n, GiNaC::lst &sym_lst); \
+	virtual void archive(GiNaC::archive_node &n) const; \
+	static GiNaC::ex unarchive(const GiNaC::archive_node &n, GiNaC::lst &sym_lst); \
+	\
+	class visitor { \
+	public: \
+		virtual void visit(const classname &) = 0; \
+	};
 
 /** Macro for inclusion in the declaration of each registered class.
  *  It declares some functions that are common to all classes derived
@@ -77,47 +123,51 @@ public: \
 	GINAC_DECLARE_REGISTERED_CLASS_NO_CTORS(classname, supername) \
 public: \
 	classname(); \
-	~classname() { destroy(false); } \
-	classname(const classname & other); \
-	const classname & operator=(const classname & other); \
-	basic * duplicate() const; \
+	virtual classname * duplicate() const { return new classname(*this); } \
+	\
+	virtual void accept(GiNaC::visitor & v) const \
+	{ \
+		if (visitor *p = dynamic_cast<visitor *>(&v)) \
+			p->visit(*this); \
+		else \
+			inherited::accept(v); \
+	} \
 protected: \
-	void copy(const classname & other); \
-	void destroy(bool call_parent); \
-	int compare_same_type(const basic & other) const; \
+	virtual int compare_same_type(const GiNaC::basic & other) const; \
 private:
 
-/** Primary macro for inclusion in the implementation of each registered class. */
-#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. */
+#define GINAC_IMPLEMENT_REGISTERED_CLASS(classname, supername) \
+	GiNaC::registered_class_info classname::reg_info = GiNaC::registered_class_info(GiNaC::registered_class_options(#classname, #supername, TINFO_##classname, &classname::unarchive));
 
 /** 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 assignment operator). */
-#define GINAC_IMPLEMENT_REGISTERED_CLASS(classname, supername) \
-	GINAC_IMPLEMENT_REGISTERED_CLASS_NO_CTORS(classname, supername) \
-classname::classname(const classname & other) { copy(other); } \
-const classname & classname::operator=(const classname & other) \
-{ \
-	if (this != &other) { \
-		destroy(true); \
-		copy(other); \
-	} \
-	return *this; \
-} \
-basic * classname::duplicate() const { \
-	return new classname(*this); \
-}
+ *  Additional options can be specified. */
+#define GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(classname, supername, options) \
+	GiNaC::registered_class_info classname::reg_info = GiNaC::registered_class_info(GiNaC::registered_class_options(#classname, #supername, TINFO_##classname, &classname::unarchive).options);
 
 
 /** Find TINFO_* key by class name. */
-extern unsigned int find_tinfo_key(const std::string &class_name);
+extern unsigned find_tinfo_key(const std::string &class_name);
 
 /** Find unarchiving function by class name. */
 extern unarch_func find_unarch_func(const std::string &class_name);
 
 
+/** Add or replace a print method. */
+template <class Alg, class Ctx, class T, class C>
+extern void set_print_func(void f(const T &, const C & c, unsigned))
+{
+	Alg::get_class_info_static().options.set_print_func(Ctx::get_class_info_static().options.get_id(), f);
+}
+
+/** Add or replace a print method. */
+template <class Alg, class Ctx, class T, class C>
+extern void set_print_func(void (T::*f)(const C &, unsigned))
+{
+	Alg::get_class_info_static().options.set_print_func(Ctx::get_class_info_static().options.get_id(), f);
+}
+
+
 } // namespace GiNaC
 
 #endif // ndef __GINAC_REGISTRAR_H__