1 files changed, 15 insertions, 0 deletions
diff --git a/src/generic/problemresolver/incremental_expression.cc b/src/generic/problemresolver/incremental_expression.cc
index 619d84ba..1a3d16a4 100644
--- a/src/generic/problemresolver/incremental_expression.cc
+++ b/src/generic/problemresolver/incremental_expression.cc
@@ -91,11 +91,21 @@ bool and_e::get_value()
   return get_num_true() == get_children().size();
 }
 
+std::string and_e::get_name()
+{
+  return "and";
+}
+
 bool or_e::get_value()
 {
   return get_num_true() > 0;
 }
 
+std::string or_e::get_name()
+{
+  return "or";
+}
+
 void not_e::child_modified(const cwidget::util::ref_ptr<expression<bool> > &child,
 			   bool old_value,
 			   bool new_value)
@@ -107,3 +117,8 @@ bool not_e::get_value()
 {
   return !child->get_value();
 }
+
+void not_e::dump(std::ostream &out)
+{
+  out << "~" << child;
+}