From d7512158475455f647f6fc5f8a9d33f674652783 Mon Sep 17 00:00:00 2001
From: Christian Bauer <Christian.Bauer@uni-mainz.de>
Date: Mon, 24 Jan 2000 21:28:22 +0000
Subject: [PATCH] - archiving implemented in lorentzidx

---
 ginac/lorentzidx.cpp | 47 +++++++++++++++++++++++++++++++++++++++++---
 ginac/lorentzidx.h   |  2 ++
 2 files changed, 46 insertions(+), 3 deletions(-)

diff --git a/ginac/lorentzidx.cpp b/ginac/lorentzidx.cpp
index e8dacf73..52487dde 100644
--- a/ginac/lorentzidx.cpp
+++ b/ginac/lorentzidx.cpp
@@ -23,6 +23,8 @@
 #include <stdexcept>
 
 #include "lorentzidx.h"
+#include "lst.h"
+#include "archive.h"
 #include "utils.h"
 #include "debugmsg.h"
 
@@ -30,6 +32,8 @@
 namespace GiNaC {
 #endif // ndef NO_GINAC_NAMESPACE
 
+GINAC_IMPLEMENT_REGISTERED_CLASS(lorentzidx, idx)
+
 //////////
 // default constructor, destructor, copy constructor assignment operator and helpers
 //////////
@@ -70,14 +74,14 @@ const lorentzidx & lorentzidx::operator=(const lorentzidx & other)
 
 void lorentzidx::copy(const lorentzidx & other)
 {
-    idx::copy(other);
+    inherited::copy(other);
     orthogonal_only=other.orthogonal_only;
     dim_parallel_space=other.dim_parallel_space;
 }
 
 void lorentzidx::destroy(bool call_parent)
 {
-    if (call_parent) idx::destroy(call_parent);
+    if (call_parent) inherited::destroy(call_parent);
 }
 
 //////////
@@ -122,6 +126,43 @@ lorentzidx::lorentzidx(unsigned v, bool cov) : idx(v,cov),
     tinfo_key=TINFO_lorentzidx;
 }
 
+//////////
+// archiving
+//////////
+
+/** Construct object from archive_node. */
+lorentzidx::lorentzidx(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst)
+{
+    debugmsg("lorentzidx constructor from archive_node", LOGLEVEL_CONSTRUCT);
+    n.find_bool("orthogonal_only", orthogonal_only);
+	if (orthogonal_only)
+		n.find_unsigned("pdim", dim_parallel_space);
+}
+
+/** Unarchive the object. */
+ex lorentzidx::unarchive(const archive_node &n, const lst &sym_lst)
+{
+    ex s = (new lorentzidx(n, sym_lst))->setflag(status_flags::dynallocated);
+
+    if (ex_to_lorentzidx(s).symbolic) {
+        // If lorentzidx is in sym_lst, return the existing lorentzidx
+        for (int i=0; i<sym_lst.nops(); i++) {
+            if (is_ex_of_type(sym_lst.op(i), lorentzidx) && (ex_to_lorentzidx(sym_lst.op(i)).name == ex_to_lorentzidx(s).name))
+                return sym_lst.op(i);
+        }
+    }
+    return s;
+}
+
+/** Archive the object. */
+void lorentzidx::archive(archive_node &n) const
+{
+    inherited::archive(n);
+	n.add_bool("orthogonal_only", orthogonal_only);
+	if (orthogonal_only)
+		n.add_unsigned("pdim", dim_parallel_space);
+}
+
 //////////
 // functions overriding virtual functions from bases classes
 //////////
@@ -213,7 +254,7 @@ void lorentzidx::print(ostream & os, unsigned upper_precedence) const
 bool lorentzidx::info(unsigned inf) const
 {
     if (inf==info_flags::lorentzidx) return true;
-    return idx::info(inf);
+    return inherited::info(inf);
 }
 
 //////////
diff --git a/ginac/lorentzidx.h b/ginac/lorentzidx.h
index c5eade73..25c91723 100644
--- a/ginac/lorentzidx.h
+++ b/ginac/lorentzidx.h
@@ -33,6 +33,8 @@ namespace GiNaC {
 
 class lorentzidx : public idx
 {
+    GINAC_DECLARE_REGISTERED_CLASS(lorentzidx, idx)
+
     friend class simp_lor;
     friend class scalar_products;
 
-- 
2.44.0