1 files changed, 25 insertions, 0 deletions
diff --git a/utils/lvalue_pmap.h b/utils/lvalue_pmap.h
new file mode 100755
index 00000000..03ddf5e7
--- /dev/null
+++ b/utils/lvalue_pmap.h
@@ -0,0 +1,25 @@
+#ifndef LVALUE_PMAP_H
+#define LVALUE_PMAP_H
+
+#include <boost/property_map/property_map.hpp>
+
+// i checked: boost provides get and put given []
+
+// lvalue property map pmapname<P> that is: P p; valtype &v=p->name;
+#define PMAP_MEMBER_INDIRECT(pmapname,valtype,name) template <class P> struct pmapname {  \
+  typedef P key_type; \
+  typedef valtype value_type; \
+  typedef value_type & reference; \
+  typedef boost::lvalue_property_map_tag category;          \
+  reference operator[](key_type p) const { return p->name; } \
+};
+
+#define PMAP_MEMBER_INDIRECT_2(pmapname,name) template <class P,class R> struct pmapname {    \
+  typedef P key_type; \
+  typedef R value_type; \
+  typedef value_type & reference; \
+  typedef boost::lvalue_property_map_tag category; \
+  reference operator[](key_type p) const { return p->name; } \
+};
+
+#endif