Don't force every algebraic class to implement archiving/unarchiving.

[ginac.git] / ginac / symbol.h

diff --git a/ginac/symbol.h b/ginac/symbol.h
index bd894c9479dad78eb0a985eb2243ced0dcf73be9..3537776b7fa7c13b3e0860a0fc14cba70a666f42 100644 (file)
--- a/ginac/symbol.h
+++ b/ginac/symbol.h
@@ -28,6 +28,7 @@
 #include "basic.h"
 #include "ex.h"
 #include "ptr.h"
+#include "archive.h"
 
 namespace GiNaC {
 
@@ -36,7 +37,6 @@ namespace GiNaC {
 class symbol : public basic
 {
        GINAC_DECLARE_REGISTERED_CLASS(symbol, basic)
-
        // other constructors
 public:
        explicit symbol(const std::string & initname);
@@ -56,6 +56,10 @@ public:
        ex real_part() const;
        ex imag_part() const;
        bool is_polynomial(const ex & var) 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);
 protected:
        ex derivative(const symbol & s) const;
        bool is_equal_same_type(const basic & other) const;
@@ -81,6 +85,7 @@ protected:
 private:
        static unsigned next_serial;
 };
+GINAC_DECLARE_UNARCHIVER(symbol);
 
 
 /** Specialization of symbol to real domain */
@@ -99,6 +104,7 @@ public:
 
        realsymbol* duplicate() const { return new realsymbol(*this); }
 };
+GINAC_DECLARE_UNARCHIVER(realsymbol);
 
 
 /** Specialization of symbol to real domain */
@@ -113,6 +119,7 @@ public:
 
        possymbol* duplicate() const { return new possymbol(*this); }
 };
+GINAC_DECLARE_UNARCHIVER(possymbol);
 
 } // namespace GiNaC