Make symbol::name be initialized lazily.

[ginac.git] / ginac / symbol.h

diff --git a/ginac/symbol.h b/ginac/symbol.h
index eefd27c80672583ab37f5ae1be2b544fa0b805c2..ec371f8c3ed8ad40374b8bfc96b845f5d8a66e12 100644 (file)
--- a/ginac/symbol.h
+++ b/ginac/symbol.h
@@ -69,7 +69,7 @@ protected:
        // non-virtual functions in this class
 public:
        void set_name(const std::string & n) { name = n; }
-       std::string get_name() const { return name; }
+       std::string get_name() const;
        virtual unsigned get_domain() const { return domain::complex; }
 protected:
        void do_print(const print_context & c, unsigned level) const;
@@ -81,7 +81,7 @@ protected:
 
 protected:
        unsigned serial;                 ///< unique serial number for comparison
-       std::string name;                ///< printname of this symbol
+       mutable std::string name;        ///< printname of this symbol
        std::string TeX_name;            ///< LaTeX name of this symbol
 private:
        static unsigned next_serial;
@@ -108,7 +108,7 @@ public:
 GINAC_DECLARE_UNARCHIVER(realsymbol);
 
 
-/** Specialization of symbol to real domain */
+/** Specialization of symbol to real positive domain */
 class possymbol : public realsymbol
 {
 public: