From 380fa5bb38e3a326eaa17a676eac28c7cbd29f84 Mon Sep 17 00:00:00 2001
From: Ichthyostega <prg@ichthyostega.de>
Date: Fri, 11 Aug 2017 22:23:51 +0200
Subject: [PATCH] DiffMessage: add further convenience ctors for STL containers

---
 src/lib/diff/diff-message.hpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/lib/diff/diff-message.hpp b/src/lib/diff/diff-message.hpp
index 59f28a0ac..0626e3236 100644
--- a/src/lib/diff/diff-message.hpp
+++ b/src/lib/diff/diff-message.hpp
@@ -49,6 +49,7 @@
 
 #include "lib/error.hpp"
 #include "lib/iter-source.hpp"
+#include "lib/iter-adapter-stl.hpp"
 #include "lib/diff/tree-diff.hpp"
 #include "lib/diff/gen-node.hpp"
 #include "lib/meta/util.hpp"
@@ -107,10 +108,34 @@ namespace diff{
         : _FrontEnd{DiffSource::build (diffGenerationContext)}
         { }
       
+      /**
+       * Convenience builder for consuming an brace enclosed initializer_list
+       * @note initialiser elements will be _copied_ into a _heap alloacated_
+       *       snapshot (vector), which is then managed by `shared_ptr`
+       */
+      DiffMessage(std::initializer_list<DiffStep> const&& ili)
+        : DiffMessage{iter_stl::snapshot (move(ili))}
+        { }
+      
+      /**
+       * Convenience builder to piggyback any Lumiera Forward Iterator
+       * @note source iterator is copied into a heap allocated IterSource
+       */
       template<class IT>
       DiffMessage(IT ii,                      enable_if< can_IterForEach<IT>, void*> =nullptr)
         : _FrontEnd{iter_source::wrapIter(ii)}
         { }
+      
+      /**
+       * Convenience builder to use elements form any STL-like container
+       * @note creating heap allocated IterSource, which _refers_ to the original container
+       * @warning like with any classical iterators, the container must stay alive and accessible 
+       */
+      template<class CON>
+      DiffMessage(CON& container,             enable_if< __and_< can_STL_ForEach<CON>
+                                                               ,__not_<can_IterForEach<CON>>>, void*> =nullptr)
+        : _FrontEnd{iter_source::eachEntry(container)}
+        { }
     };