X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Ftensor.h;h=33859b1122754508fcd86716aae63211919ff16b;hp=712ec7e131539ce8aaf3c92e815f52486521d1a0;hb=58491538f7362529b3eaa1bcffcab3e9c0f0d049;hpb=68fdf425abf14d016d5f95ee7b9d06a19a3c5926

diff --git a/ginac/tensor.h b/ginac/tensor.h
index 712ec7e1..33859b11 100644
--- a/ginac/tensor.h
+++ b/ginac/tensor.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's special tensors. */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2008 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
@@ -17,13 +17,14 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #ifndef __GINAC_TENSOR_H__
 #define __GINAC_TENSOR_H__
 
 #include "ex.h"
+#include "archive.h"
 
 namespace GiNaC {
 
@@ -35,10 +36,6 @@ class tensor : public basic
 {
 	GINAC_DECLARE_REGISTERED_CLASS(tensor, basic)
 
-	// other constructors
-protected:
-	tensor(unsigned ti) : inherited(ti) {}
-
 	// functions overriding virtual functions from base classes
 protected:
 	unsigned return_type() const { return return_types::noncommutative_composite; }
@@ -60,10 +57,17 @@ class tensdelta : public tensor
 
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
+	bool info(unsigned inf) const;
 	ex eval_indexed(const basic & i) const;
 	bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
+
+	// non-virtual functions in this class
+protected:
+	unsigned return_type() const { return return_types::commutative; }
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
 };
+GINAC_DECLARE_UNARCHIVER(tensdelta);
 
 
 /** This class represents a general metric tensor which can be used to
@@ -75,10 +79,16 @@ class tensmetric : public tensor
 
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
+	bool info(unsigned inf) const;
 	ex eval_indexed(const basic & i) const;
 	bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
+
+	// non-virtual functions in this class
+protected:
+	unsigned return_type() const { return return_types::commutative; }
+	void do_print(const print_context & c, unsigned level) const;
 };
+GINAC_DECLARE_UNARCHIVER(tensmetric);
 
 
 /** This class represents a Minkowski metric tensor. It has all the
@@ -95,13 +105,24 @@ public:
 
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
+	bool info(unsigned inf) const;
 	ex eval_indexed(const basic & i) const;
 
+	/** Save (a.k.a. serialize) object into archive. */
+	void archive(archive_node& n) const;
+	/** Read (a.k.a. deserialize) object from archive. */
+	void read_archive(const archive_node& n, lst& syms);
+	// non-virtual functions in this class
+protected:
+	unsigned return_type() const { return return_types::commutative; }
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
+
 	// member variables
 private:
 	bool pos_sig; /**< If true, the metric is diag(-1,1,1...). Otherwise it is diag(1,-1,-1,...). */
 };
+GINAC_DECLARE_UNARCHIVER(minkmetric); 
 
 
 /** This class represents an antisymmetric spinor metric tensor which
@@ -114,10 +135,15 @@ class spinmetric : public tensmetric
 
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
+	bool info(unsigned inf) const;
 	ex eval_indexed(const basic & i) const;
 	bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
+
+protected:
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
 };
+GINAC_DECLARE_UNARCHIVER(spinmetric);
 
 
 /** This class represents the totally antisymmetric epsilon tensor. If
@@ -133,15 +159,26 @@ public:
 
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
+	bool info(unsigned inf) const;
 	ex eval_indexed(const basic & i) const;
 	bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
 
+	/** Save (a.k.a. serialize) object into archive. */
+	void archive(archive_node& n) const;
+	/** Read (a.k.a. deserialize) object from archive. */
+	void read_archive(const archive_node& n, lst& syms);
+	// non-virtual functions in this class
+protected:
+	unsigned return_type() const { return return_types::commutative; }
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
+
 	// member variables
 private:
 	bool minkowski; /**< If true, tensor is in Minkowski-type space. Otherwise it is in a Euclidean space. */
 	bool pos_sig;   /**< If true, the metric is assumed to be diag(-1,1,1...). Otherwise it is diag(1,-1,-1,...). This is only relevant if minkowski = true. */
 };
+GINAC_DECLARE_UNARCHIVER(tensepsilon); 
 
 
 // utility functions