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gf: finish block iterator

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This commit is contained in:
Olivier Parcollet 2013-10-21 21:53:17 +02:00
parent 1d929c1a91
commit de0e41ed15
2 changed files with 29 additions and 27 deletions
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6
test/triqs/gfs/block.cpp
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@ -12,7 +12,8 @@ int main() {
auto G3 = G2; auto G3 = G2;
// construct some block functions // construct some block functions
auto B0 = block_gf<imfreq> (3); auto B0 = block_gf<imfreq> (3);
auto B1 = make_block_gf<imfreq> (3, G1); auto B1 = make_block_gf<imfreq> (3, G1);
auto B2 = make_block_gf<imfreq> ({G1,G1,G1}); auto B2 = make_block_gf<imfreq> ({G1,G1,G1});
auto B3 = make_block_gf<imfreq> ({"a","b","c"}, {G1,G1,G1}); auto B3 = make_block_gf<imfreq> ({"a","b","c"}, {G1,G1,G1});
@ -57,7 +58,8 @@ int main() {
TEST( View[0](0) ) ; TEST( View[0](0) ) ;
// try the loop over the block. // try the loop over the block.
for (auto g : View) { g[0] = 20;} for (auto & g : View) { g[0] = 20;}
for (auto & g : B1) { g[0] = 20;}
} }
TRIQS_CATCH_AND_ABORT; TRIQS_CATCH_AND_ABORT;

50
triqs/gfs/block.hpp
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@ -164,74 +164,74 @@ namespace triqs { namespace gfs {
// ------------------------------- an iterator over the blocks -------------------------------------------------- // ------------------------------- an iterator over the blocks --------------------------------------------------
// iterator // iterator
template <typename Target, typename Opt> template <typename Target, typename Opt, bool B, bool C>
class block_gf_iterator : public boost::iterator_facade<block_gf_iterator<Target, Opt>, typename Target::view_type, class block_gf_iterator
boost::forward_traversal_tag, typename Target::view_type> { : public boost::iterator_facade<block_gf_iterator<Target, Opt, B, C>, Target, boost::forward_traversal_tag, Target &> {
friend class boost::iterator_core_access; friend class boost::iterator_core_access;
typedef gf_view<block_index, Target, Opt> big_gf_t; typedef gf_impl<block_index, Target, Opt, B, C> big_gf_t;
big_gf_t & big_gf;
typedef typename big_gf_t::mesh_t::const_iterator mesh_iterator_t; typedef typename big_gf_t::mesh_t::const_iterator mesh_iterator_t;
big_gf_t big_gf;
mesh_iterator_t mesh_it; mesh_iterator_t mesh_it;
typename Target::view_type const &dereference() const { return big_gf[*mesh_it]; } Target &dereference() const { return big_gf[*mesh_it]; }
bool equal(block_gf_iterator const &other) const { return ((mesh_it == other.mesh_it)); } bool equal(block_gf_iterator const &other) const { return ((mesh_it == other.mesh_it)); }
public: public:
block_gf_iterator(gf_view<block_index, Target, Opt> bgf, bool at_end = false) block_gf_iterator(big_gf_t & bgf, bool at_end = false)
: big_gf(std::move(bgf)), mesh_it(&big_gf.mesh(), at_end) {} : big_gf(bgf), mesh_it(&big_gf.mesh(), at_end) {}
void increment() { ++mesh_it; } void increment() { ++mesh_it; }
bool at_end() const { return mesh_it.at_end(); } bool at_end() const { return mesh_it.at_end(); }
}; };
//------------ //------------
template <typename Target, typename Opt, bool B, bool C> template <typename Target, typename Opt, bool B, bool C>
block_gf_iterator<Target, Opt> begin(gf_impl<block_index, Target, Opt, B, C> &bgf) { block_gf_iterator<Target, Opt, B, C> begin(gf_impl<block_index, Target, Opt, B, C> &bgf) {
return {bgf, false}; return {bgf, false};
} }
//------------ //------------
template <typename Target, typename Opt, bool B, bool C> template <typename Target, typename Opt, bool B, bool C>
block_gf_iterator<Target, Opt> end(gf_impl<block_index, Target, Opt, B, C> &bgf) { block_gf_iterator<Target, Opt, B, C> end(gf_impl<block_index, Target, Opt, B, C> &bgf) {
return {bgf, true}; return {bgf, true};
} }
//----- const iterator //----- const iterator
template <typename Target, typename Opt> template <typename Target, typename Opt, bool B, bool C>
class block_gf_const_iterator : public boost::iterator_facade<block_gf_iterator<Target, Opt>, typename Target::const_view_type, class block_gf_const_iterator
boost::forward_traversal_tag, typename Target::const_view_type> { : public boost::iterator_facade<block_gf_const_iterator<Target, Opt, B, C>, Target, boost::forward_traversal_tag, Target const &> {
friend class boost::iterator_core_access; friend class boost::iterator_core_access;
typedef gf_const_view<block_index, Target, Opt> big_gf_t; typedef gf_impl<block_index, Target, Opt, B, C> big_gf_t;
big_gf_t const & big_gf;
typedef typename big_gf_t::mesh_t::const_iterator mesh_iterator_t; typedef typename big_gf_t::mesh_t::const_iterator mesh_iterator_t;
big_gf_t big_gf;
mesh_iterator_t mesh_it; mesh_iterator_t mesh_it;
typename Target::const_view_type const &dereference() const { return big_gf[*mesh_it]; } Target const &dereference() const { return big_gf[*mesh_it]; }
bool equal(block_gf_const_iterator const &other) const { return ((mesh_it == other.mesh_it)); } bool equal(block_gf_const_iterator const &other) const { return ((mesh_it == other.mesh_it)); }
public: public:
block_gf_const_iterator(gf_const_view<block_index, Target, Opt> bgf, bool at_end = false) block_gf_const_iterator(big_gf_t const& bgf, bool at_end = false)
: big_gf(std::move(bgf)), mesh_it(&big_gf.mesh(), at_end) {} : big_gf(bgf), mesh_it(&big_gf.mesh(), at_end) {}
void increment() { ++mesh_it; } void increment() { ++mesh_it; }
bool at_end() const { return mesh_it.at_end(); } bool at_end() const { return mesh_it.at_end(); }
}; };
template <typename Target, typename Opt, bool B, bool C> template <typename Target, typename Opt, bool B, bool C>
block_gf_iterator<Target, Opt> begin(gf_impl<block_index, Target, Opt, B, C> const &bgf) { block_gf_const_iterator<Target, Opt, B, C> begin(gf_impl<block_index, Target, Opt, B, C> const &bgf) {
return {bgf, false}; return {bgf, false};
} }
template <typename Target, typename Opt, bool B, bool C> template <typename Target, typename Opt, bool B, bool C>
block_gf_iterator<Target, Opt> end(gf_impl<block_index, Target, Opt, B, C> const &bgf) { block_gf_const_iterator<Target, Opt, B, C> end(gf_impl<block_index, Target, Opt, B, C> const &bgf) {
return {bgf, true}; return {bgf, true};
} }
template <typename Target, typename Opt, bool B, bool C> template <typename Target, typename Opt, bool B, bool C>
block_gf_iterator<Target, Opt> cbegin(gf_impl<block_index, Target, Opt, B, C> const &bgf) { block_gf_const_iterator<Target, Opt, B, C> cbegin(gf_impl<block_index, Target, Opt, B, C> const &bgf) {
return {bgf, false}; return {bgf, false};
} }
template <typename Target, typename Opt, bool B, bool C> template <typename Target, typename Opt, bool B, bool C>
block_gf_iterator<Target, Opt> cend(gf_impl<block_index, Target, Opt, B, C> const &bgf) { block_gf_const_iterator<Target, Opt, B, C> cend(gf_impl<block_index, Target, Opt, B, C> const &bgf) {
return {bgf, true}; return {bgf, true};
} }