- Cleanups: My evil plot of making ex::bp private may finally be carried

[ginac.git] / ginac / clifford.h

diff --git a/ginac/clifford.h b/ginac/clifford.h
index 2877b881b3dffd1d34f57daf400b68c7248dca8e..b6c88d9efa79a0f4060264f102428af7dbb6b952 100644 (file)
--- a/ginac/clifford.h
+++ b/ginac/clifford.h
@@ -48,7 +48,11 @@ public:
        clifford(unsigned char rl, exvector * vp); // vp will be deleted
 
        // functions overriding virtual functions from base classes
+public:
+       void print(const print_context & c, unsigned level = 0) const;
+
 protected:
+       bool match_same_type(const basic & other) const;
        ex simplify_ncmul(const exvector & v) const;
        ex thisexprseq(const exvector & v) const;
        ex thisexprseq(exvector * vp) const;
@@ -70,7 +74,7 @@ class diracone : public tensor
 {
        GINAC_DECLARE_REGISTERED_CLASS(diracone, tensor)
 
-       // functions overriding virtual functions from bases classes
+       // functions overriding virtual functions from base classes
 public:
        void print(const print_context & c, unsigned level = 0) const;
 };
@@ -81,7 +85,7 @@ class diracgamma : public tensor
 {
        GINAC_DECLARE_REGISTERED_CLASS(diracgamma, tensor)
 
-       // functions overriding virtual functions from bases classes
+       // functions overriding virtual functions from base classes
 public:
        void print(const print_context & c, unsigned level = 0) const;
        bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
@@ -94,19 +98,20 @@ class diracgamma5 : public tensor
 {
        GINAC_DECLARE_REGISTERED_CLASS(diracgamma5, tensor)
 
-       // functions overriding virtual functions from bases classes
+       // functions overriding virtual functions from base classes
 public:
        void print(const print_context & c, unsigned level = 0) const;
 };
 
 
 // global functions
-inline const clifford &ex_to_clifford(const ex &e)
+
+/** Specialization of is_exactly_a<clifford>(obj) for clifford objects. */
+template<> inline bool is_exactly_a<clifford>(const basic & obj)
 {
-       return static_cast<const clifford &>(*e.bp);
+       return obj.tinfo()==TINFO_clifford;
 }
 
-
 /** Create a Clifford unity object.
  *
  *  @param rl Representation label