- info(info_flags::has_indices) now works for sums and products. It

[ginac.git] / ginac / idx.cpp

diff --git a/ginac/idx.cpp b/ginac/idx.cpp
index 80e66bce5092c8939313704e5cc6e5a362070ef1..e966b14a968672b67ce8ec8d72a2d8c3843ce979 100644 (file)
--- a/ginac/idx.cpp
+++ b/ginac/idx.cpp
@@ -37,6 +37,7 @@ namespace GiNaC {
 GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(idx, basic,
   print_func<print_context>(&idx::do_print).
   print_func<print_latex>(&idx::do_print_latex).
+  print_func<print_csrc>(&idx::do_print_csrc).
   print_func<print_tree>(&idx::do_print_tree))
 
 GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(varidx, idx,
@@ -161,6 +162,16 @@ void idx::do_print_latex(const print_latex & c, unsigned level) const
        c.s << "}";
 }
 
+void idx::do_print_csrc(const print_csrc & c, unsigned level) const
+{
+       c.s << "[";
+       if (value.info(info_flags::integer))
+               c.s << ex_to<numeric>(value).to_int();
+       else
+               value.print(c);
+       c.s << "]";
+}
+
 void idx::do_print_tree(const print_tree & c, unsigned level) const
 {
        c.s << std::string(level, ' ') << class_name() << " @" << this
@@ -223,8 +234,11 @@ void spinidx::do_print_tree(const print_tree & c, unsigned level) const
 
 bool idx::info(unsigned inf) const
 {
-       if (inf == info_flags::idx)
-               return true;
+       switch(inf) {
+               case info_flags::idx:
+               case info_flags::has_indices:
+                       return true;
+       }
        return inherited::info(inf);
 }