From 2b53bc4c435547768fb2d986f8deead8738beb16 Mon Sep 17 00:00:00 2001
From: Joakim Hove <joakim.hove@gmail.com>
Date: Fri, 11 Nov 2016 14:41:50 +0100
Subject: [PATCH] Add begin() and end() to Box.

---
 opm/parser/eclipse/EclipseState/Grid/Box.cpp           | 10 ++++++++++
 opm/parser/eclipse/EclipseState/Grid/Box.hpp           |  3 ++-
 .../eclipse/EclipseState/Grid/tests/BoxTests.cpp       |  8 +++++++-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/opm/parser/eclipse/EclipseState/Grid/Box.cpp b/opm/parser/eclipse/EclipseState/Grid/Box.cpp
index f3e970303..75b1283d1 100644
--- a/opm/parser/eclipse/EclipseState/Grid/Box.cpp
+++ b/opm/parser/eclipse/EclipseState/Grid/Box.cpp
@@ -103,6 +103,16 @@ namespace Opm {
     }
 
 
+
+    std::vector<size_t>::const_iterator Box::begin() const {
+        return m_indexList.begin();
+    }
+
+    std::vector<size_t>::const_iterator Box::end() const {
+        return m_indexList.end();
+    }
+
+
     const std::vector<size_t>& Box::getIndexList() const {
         return m_indexList;
     }
diff --git a/opm/parser/eclipse/EclipseState/Grid/Box.hpp b/opm/parser/eclipse/EclipseState/Grid/Box.hpp
index abab90963..ca379399d 100644
--- a/opm/parser/eclipse/EclipseState/Grid/Box.hpp
+++ b/opm/parser/eclipse/EclipseState/Grid/Box.hpp
@@ -38,7 +38,8 @@ namespace Opm {
         bool equal(const Box& other) const;
 
         explicit operator bool() const;
-
+        std::vector<size_t>::const_iterator begin() const;
+        std::vector<size_t>::const_iterator end() const;
 
     private:
         void initIndexList();
diff --git a/opm/parser/eclipse/EclipseState/Grid/tests/BoxTests.cpp b/opm/parser/eclipse/EclipseState/Grid/tests/BoxTests.cpp
index 0e888cb51..1adfa714b 100644
--- a/opm/parser/eclipse/EclipseState/Grid/tests/BoxTests.cpp
+++ b/opm/parser/eclipse/EclipseState/Grid/tests/BoxTests.cpp
@@ -53,10 +53,16 @@ BOOST_AUTO_TEST_CASE(CreateBox) {
                 for (i=0; i < box.getDim(0); i++) {
                     size_t g = i + j*box.getDim(0) + k*box.getDim(0)*box.getDim(1);
                     BOOST_CHECK_EQUAL( indexList[g] , g);
-
+                    
                 }
             }
         }
+
+        i = 0;
+        for (auto index : box) {
+            BOOST_CHECK_EQUAL( index , indexList[i]);
+            i++;
+        }
     }
 }