Library: convenience function to take addresses

just a wrapper based on 5749a621

While implementing this, also simplified the way
a const iterator can be defined for taking addresses

src/lib/iter-adapter-stl.hpp

@@ -263,6 +263,7 @@ namespace iter_stl {
         typedef typename SEQ::iterator Iter;
         typedef RangeIter<Iter> Range;
         typedef DistinctIter<Range> DistinctVals;
+        typedef AddressExposingIter<Range> Addrs;
       };
     
     template<class SEQ>
@@ -271,6 +272,7 @@ namespace iter_stl {
         typedef typename SEQ::const_iterator Iter;
         typedef RangeIter<Iter> Range;
         typedef DistinctIter<Range> DistinctVals;
+        typedef AddressExposingIter<Range> Addrs;
       };
     
   }//(End) traits/helpers
@@ -290,6 +292,18 @@ namespace iter_stl {
   }
   
   
+  /** @return Lumiera Forward Iterator
+   *          exposing the address of each Element within a STL
+   */
+  template<class CON>
+  inline typename _SeqT<CON>::Addrs
+  eachAddress (CON& coll)
+  {
+    typedef typename _SeqT<CON>::Addrs Addresses;
+    return Addresses (eachElm (coll));
+  }
+  
+  
   /** @return Lumiera Forward Iterator to yield
    *          each key of a map/multimap
    */

src/lib/iter-adapter.hpp

@@ -527,8 +527,6 @@ namespace lib {
       typedef CON Container;
       typedef TY  ElemType;
       
-      typedef typename RemovePtr<TY>::Type ValueType;
-      
       template<class T2>
       struct SimilarIter  ///< rebind to a similarly structured Iterator with value type T2
         {
@@ -706,15 +704,11 @@ namespace lib {
   class AddressExposingIter
     : public lib::BoolCheckable<AddressExposingIter<IT> >
     {
-    public:
-      typedef typename IT::value_type ** pointer;
-      typedef typename IT::value_type *& reference;
-      typedef typename IT::value_type *  value_type;
+      typedef typename IT::pointer _Ptr;
       
-    private:
       IT i_;  ///< nested source iterator
       
-      mutable value_type currPtr_;
+      mutable _Ptr currPtr_;
       
       
       void
@@ -728,6 +722,11 @@ namespace lib {
       
       
     public:
+      typedef typename IT::pointer const* pointer;
+      typedef typename IT::pointer const& reference;
+      typedef typename IT::pointer const  value_type;
+      
+      
       /** AddressExposingIter is always created 
        *  by wrapping an existing iterator.
        */
@@ -755,7 +754,7 @@ namespace lib {
           return currPtr_;
         }
       
-      pointer
+      _Ptr
       operator->() const
         {
           return currPtr_;

tests/library/iter-adapter-test.cpp

@@ -341,7 +341,7 @@ namespace test{
           // since we're exposing the pointer as value, the solution is to add
           // the const on the immediately wrapped iterator type 
           typedef vector<int>::const_iterator     ConstRawIter;
-          typedef ConstIter<Range>                ConstRange;
+          typedef RangeIter<ConstRawIter>         ConstRange;
           typedef AddressExposingIter<ConstRange> ConstAddrIter;
           
           ConstAddrIter iic(ConstRange(Range(numbz.begin(), numbz.end())));