Commit 122b292b authored by Martin Heistermann's avatar Martin Heistermann
Browse files

Add support for C++11 range-for for iterator pairs, cf issue #1

parent 77d3df03
......@@ -130,6 +130,32 @@ private:
const TopologyKernel* mesh_;
#if __cplusplus >= 201103L
#include <type_traits>
template<class I>
using is_ovm_iterator = std::is_base_of<BaseIterator<typename std::remove_const<typename I::value_type>::type>, I>;
// provide begin() and end() for the iterator pairs provided in TopologyKernel,
// so we can use range-for, e.g. for(const auto &vh: mesh.vertices()) works.
template<class I>
typename std::enable_if<is_ovm_iterator<I>::value, I>::type
begin(const std::pair<I, I> &iterpair)
return iterpair.first;
template<class I>
typename std::enable_if<is_ovm_iterator<I>::value, I>::type
end(const std::pair<I, I> &iterpair)
return iterpair.second;
#endif // C++11
template <
class IH /* Input handle type */,
class OH /* Output handle type */>
......@@ -22,3 +22,12 @@ TEST_F(HexahedralMeshBase, HexVertexIterTest) {
EXPECT_EQ(VertexHandle(5), *hv_it);
#if __cplusplus >= 201103L // C++11
TEST_F(HexahedralMeshBase, RangeForTest) {
// no EXPECTs here, if it compiles, it'll work.
for (const auto &vh: mesh_.vertices()) {}
const auto &constref = mesh_;
for (const auto &vh: constref.vertices()) {}
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