gf : mesh now the class, not a trait.

simplify : mesh was a impl trait,
make it the class itself.
corrected the gf, tests and the cython.

pytriqs/gf/local/imfreq.pxd

@@ -5,8 +5,7 @@ cdef extern from "triqs/gfs/imfreq.hpp" namespace "triqs::gfs" :
         statistic_enum statistic
         imfreq_domain ()
 
-    #cdef cppclass mesh_imfreq "triqs::gfs::linear_mesh<triqs::gfs::imfreq::domain_t>"  :
+    cdef cppclass mesh_imfreq "triqs::gfs::mesh<triqs::gfs::imfreq>"  :
-    cdef cppclass mesh_imfreq "triqs::gfs::linear_mesh<triqs::gfs::matsubara_domain<true>>"  :
         mesh_imfreq ()
         mesh_imfreq (mesh_imfreq &)
         imfreq_domain & domain()
@@ -14,7 +13,7 @@ cdef extern from "triqs/gfs/imfreq.hpp" namespace "triqs::gfs" :
         long size()
         bint operator ==( mesh_imfreq &)
 
-    cdef mesh_imfreq make_mesh_imfreq "triqs::gfs::make_gf_mesh<triqs::gfs::imfreq>" (double beta, statistic_enum S, size_t n_max)
+    cdef mesh_imfreq make_mesh_imfreq "triqs::gfs::mesh<triqs::gfs::imfreq>" (double beta, statistic_enum S, size_t n_max)
     #cdef mesh_imfreq make_mesh_imfreq "triqs::gfs::gf_implementation::gf_factories<triqs::gfs::imfreq,triqs::gfs::matrix>::make_mesh" (double beta, statistic_enum S, size_t n_max)
     
     cdef cppclass gf_imfreq "triqs::python_tools::cython_proxy<triqs::gfs::gf_view<triqs::gfs::imfreq> >" :

pytriqs/gf/local/imtime.pxd

@@ -5,8 +5,7 @@ cdef extern from "triqs/gfs/imtime.hpp" namespace "triqs::gfs" :
         statistic_enum statistic
         imtime_domain ()
 
-    #cdef cppclass mesh_imtime "triqs::gfs::linear_mesh<triqs::gfs::imtime::domain_t>"  :
+    cdef cppclass mesh_imtime "triqs::gfs::mesh<triqs::gfs::imtime>"  :
-    cdef cppclass mesh_imtime "triqs::gfs::linear_mesh<triqs::gfs::matsubara_domain<false>>" :
         mesh_imtime ()
         mesh_imtime (mesh_imtime &)
         imtime_domain & domain()
@@ -15,7 +14,7 @@ cdef extern from "triqs/gfs/imtime.hpp" namespace "triqs::gfs" :
         long kind()
         bint operator ==( mesh_imtime &)
 
-    cdef mesh_imtime make_mesh_imtime "triqs::gfs::make_gf_mesh<triqs::gfs::imtime>" (double beta, statistic_enum S, size_t n_time_slices, mesh_enum mk)
+    cdef mesh_imtime make_mesh_imtime "triqs::gfs::mesh<triqs::gfs::imtime>" (double beta, statistic_enum S, size_t n_time_slices, mesh_enum mk)
     #cdef mesh_imtime make_mesh_imtime "triqs::gfs::gf_factories<triqs::gfs::imtime>::make_mesh" (double beta, statistic_enum S, size_t n_time_slices, mesh_enum mk)
 
     cdef cppclass gf_imtime "triqs::python_tools::cython_proxy<triqs::gfs::gf_view<triqs::gfs::imtime>>" :

pytriqs/gf/local/legendre.pxd

@@ -6,15 +6,14 @@ cdef extern from "triqs/gfs/legendre.hpp" namespace "triqs::gfs" :
         statistic_enum statistic
         legendre_domain ()
 
-    #cdef cppclass mesh_legendre "triqs::gfs::discrete_mesh<triqs::gfs::legendre::domain_t>":
+    cdef cppclass mesh_legendre "triqs::gfs::mesh<triqs::gfs::legendre>"  :
-    cdef cppclass mesh_legendre "triqs::gfs::discrete_mesh<triqs::gfs::legendre_domain>":
         mesh_legendre ()
         mesh_legendre (mesh_legendre &)
         legendre_domain & domain()
         long size()
         bint operator == (mesh_legendre &)
 
-    cdef mesh_legendre make_mesh_legendre "triqs::gfs::make_gf_mesh<triqs::gfs::legendre>" (double beta, statistic_enum S, size_t n_leg)
+    cdef mesh_legendre make_mesh_legendre "triqs::gfs::mesh<triqs::gfs::legendre>" (double beta, statistic_enum S, size_t n_leg)
     #cdef mesh_legendre make_mesh_legendre "triqs::gfs::gf_factories<triqs::gfs::legendre>::make_mesh" (double beta, statistic_enum S, size_t n_leg)
 
     cdef cppclass gf_legendre "triqs::python_tools::cython_proxy<triqs::gfs::gf_view<triqs::gfs::legendre>>" :

pytriqs/gf/local/refreq.pxd

@@ -3,8 +3,7 @@ cdef extern from "triqs/gfs/refreq.hpp" namespace "triqs::gfs" :
     cdef cppclass refreq_domain :
         refreq_domain()
 
-    #cdef cppclass mesh_refreq "triqs::gfs::linear_mesh<triqs::gfs::refreq::domain_t>"  :
+    cdef cppclass mesh_refreq "triqs::gfs::mesh<triqs::gfs::refreq>"  :
-    cdef cppclass mesh_refreq "triqs::gfs::linear_mesh<triqs::gfs::R_domain>"  :
         mesh_refreq ()
         mesh_refreq (mesh_refreq &)
         refreq_domain & domain()
@@ -14,7 +13,7 @@ cdef extern from "triqs/gfs/refreq.hpp" namespace "triqs::gfs" :
         double kind()
         bint operator ==( mesh_refreq &)
 
-    cdef mesh_refreq make_mesh_refreq "triqs::gfs::make_gf_mesh<triqs::gfs::refreq>" (double omega_min, double omega_max, size_t n_freq, mesh_enum mk)
+    cdef mesh_refreq make_mesh_refreq "triqs::gfs::mesh<triqs::gfs::refreq>" (double omega_min, double omega_max, size_t n_freq, mesh_enum mk)
     #cdef mesh_refreq make_mesh_refreq "triqs::gfs::gf_factories<triqs::gfs::refreq>::make_mesh" (double omega_min, double omega_max, size_t n_freq, mesh_enum mk)
 
     cdef cppclass gf_refreq "triqs::python_tools::cython_proxy<triqs::gfs::gf_view<triqs::gfs::refreq>>" :

pytriqs/gf/local/retime.pxd

@@ -3,8 +3,7 @@ cdef extern from "triqs/gfs/retime.hpp" namespace "triqs::gfs" :
     cdef cppclass retime_domain :
         retime_domain()
 
-    #cdef cppclass mesh_retime "triqs::gfs::linear_mesh<triqs::gfs::retime::domain_t>"  :
+    cdef cppclass mesh_retime "triqs::gfs::mesh<triqs::gfs::retime>"  :
-    cdef cppclass mesh_retime "triqs::gfs::linear_mesh<triqs::gfs::R_domain>"  :
         mesh_retime ()
         mesh_retime (mesh_retime &)
         retime_domain & domain()
@@ -14,7 +13,7 @@ cdef extern from "triqs/gfs/retime.hpp" namespace "triqs::gfs" :
         double kind()
         bint operator ==( mesh_retime &)
 
-    cdef mesh_retime make_mesh_retime  "triqs::gfs::make_gf_mesh<triqs::gfs::retime>" (double t_min, double t_max, size_t n_freq, mesh_enum mk)
+    cdef mesh_retime make_mesh_retime  "triqs::gfs::mesh<triqs::gfs::retime>" (double t_min, double t_max, size_t n_freq, mesh_enum mk)
     #cdef mesh_retime make_mesh_retime "triqs::gfs::gf_factories<triqs::gfs::retime>::make_mesh" (double t_min, double t_max, size_t n_freq, mesh_enum mk)
 
     cdef cppclass gf_retime "triqs::python_tools::cython_proxy<triqs::gfs::gf_view<triqs::gfs::retime>>" :

pytriqs/gf/local/two_real_times.pxd

@@ -3,8 +3,7 @@ cdef extern from "triqs/gfs/two_real_times.hpp" namespace "triqs::gfs" :
     cdef cppclass two_real_times_domain :
         two_real_times_domain()
 
-    #cdef cppclass mesh_retime "triqs::gfs::linear_mesh<triqs::gfs::retime::domain_t>"  :
+    cdef cppclass mesh_two_real_times "triqs::gfs::mesh<triqs::gfs::two_real_times>"  :
-    cdef cppclass mesh_two_real_times "triqs::gfs::mesh_product<triqs::gfs::linear_mesh<triqs::gfs::R_domain>,triqs::gfs::linear_mesh<triqs::gfs::R_domain>>"  :
         mesh_two_real_times ()
         mesh_two_real_times (mesh_two_real_times &)
         two_real_times_domain & domain()
@@ -14,7 +13,7 @@ cdef extern from "triqs/gfs/two_real_times.hpp" namespace "triqs::gfs" :
         double kind()
         bint operator ==( mesh_two_real_times &)
 
-    cdef mesh_two_real_times make_mesh_two_real_times  "triqs::gfs::make_gf_mesh<triqs::gfs::two_real_times>" (double t_max, double n_time_slices)
+    cdef mesh_two_real_times make_mesh_two_real_times  "triqs::gfs::mesh<triqs::gfs::two_real_times>" (double t_max, double n_time_slices)
 
     cdef mesh_retime & get_1d_mesh_from_2times_mesh "triqs::gfs::get_1d_mesh_from_2times_mesh" (mesh_two_real_times &)
 

test/triqs/gf/c++11/gf_re_im_freq_time.cpp

@@ -34,11 +34,11 @@ try {
  auto G_w_tau= make_gf<refreq_imtime, scalar_valued>(wmin, wmax, n_re_freq, beta, Fermion, n_im_time);
  auto G_w= make_gf<refreq, scalar_valued>(wmin, wmax, n_re_freq);
 
- auto G_t_tau= make_gf<cartesian_product<retime,imtime>, scalar_valued>(  make_gf_mesh<retime>(tmin, tmax, n_re_time), make_gf_mesh<imtime>(beta, Fermion, n_im_time));
+ auto G_t_tau= make_gf<cartesian_product<retime,imtime>, scalar_valued>(mesh<retime>(tmin, tmax, n_re_time), mesh<imtime>(beta, Fermion, n_im_time));
  //auto G_t_tau_N= make_gf<cartesian_product<retime,imtime>, scalar_valued>(  {tmin, tmax, n_re_time}, {beta, Fermion, n_im_time});
 
- auto G_w_wn2 = make_gf<cartesian_product<refreq,imfreq>, scalar_valued>( make_gf_mesh<refreq>(wmin, wmax, n_re_freq), make_gf_mesh<imfreq>(beta, Fermion, n_im_freq));
+ auto G_w_wn2 = make_gf<cartesian_product<refreq,imfreq>, scalar_valued>( mesh<refreq>(wmin, wmax, n_re_freq), mesh<imfreq>(beta, Fermion, n_im_freq));
- auto G_w_tau2 = make_gf<cartesian_product<refreq,imtime>, scalar_valued>( make_gf_mesh<refreq>(wmin, wmax, n_re_freq), make_gf_mesh<imtime>(beta, Fermion, n_im_time,full_bins));
+ auto G_w_tau2 = make_gf<cartesian_product<refreq,imtime>, scalar_valued>( mesh<refreq>(wmin, wmax, n_re_freq), mesh<imtime>(beta, Fermion, n_im_time,full_bins));
 
 
  //auto g_tau = slice_mesh1(G_w_tau(),1);

triqs/gfs/block.hpp

@@ -29,9 +29,13 @@ namespace triqs { namespace gfs {
 
  struct block_index {};
 
+ template<typename Opt> struct mesh<block_index,Opt> : discrete_mesh<discrete_domain> {
+  mesh() = default;
+  mesh(size_t s) : discrete_mesh<discrete_domain>(s) {}
+ };
+
  namespace gfs_implementation { 
 
-  template<typename Opt> struct mesh<block_index,Opt>                { typedef discrete_mesh<discrete_domain> type;};
   template<typename Target, typename Opt> struct h5_name<block_index,Target,Opt>      { static std::string invoke(){ return  "BlockGf";}};
 
   /// ---------------------------  h5_rw ---------------------------------
@@ -62,7 +66,7 @@ namespace triqs { namespace gfs {
 
   template<typename Target, typename Opt>
    struct factories<block_index,Target,Opt>  { 
-    typedef typename mesh<block_index, Opt>::type mesh_t;
+    typedef mesh<block_index, Opt> mesh_t;
     typedef gf<block_index,Target> gf_t;
     typedef gf_view<block_index,Target> gf_view_t;
 
@@ -80,7 +84,7 @@ namespace triqs { namespace gfs {
        auto v = std::vector<Target> {l};
        return make_gf(v);
        }
-*/
+       */
     /* template<typename... Args>
        static gf_t make_gf(size_t N, Args&& ...args)  {
        std::vector<Target> V; V.reserve(N);

triqs/gfs/curry.hpp

@@ -119,7 +119,7 @@ namespace triqs { namespace gfs {
 	   Opt>
     curry (gf_impl<cartesian_product<Ms...>, Target,Opt,B> const & g) { 
     auto comp =  pv_<cartesian_product<Ms...>,pos...>::m(std::make_tuple(),g.mesh().components());
-    typedef typename mesh< typename pv_<cartesian_product<Ms...>,pos...>::type,Opt>::type m_t;
+    typedef mesh< typename pv_<cartesian_product<Ms...>,pos...>::type,Opt> m_t;
     return {triqs::tuple::apply_construct<m_t>(comp),curry_polymorphic_lambda<gf_view<cartesian_product<Ms...>, Target,Opt>, pos ...>{g}, nothing(), nothing()}; 
    };
 

triqs/gfs/gf.hpp

@@ -34,13 +34,12 @@ namespace triqs { namespace gfs {
  using arrays::make_shape;
 
  // GENERALISE matrxi TO DEFAULT
+ template<typename Variable, typename Opt=void> struct mesh;
  template<typename Variable, typename Target=matrix_valued, typename Opt=void> class gf;         // the value class
  template<typename Variable, typename Target=matrix_valued, typename Opt=void> class gf_view;    // the view class
 
  // various implementation traits
  namespace gfs_implementation { // never use using of this... 
-  // what is the mesh
-  template<typename Variable, typename Opt> struct mesh;
 
   // evaluator regroup functions to evaluate the function. Cf descriptors
   template<typename Variable, typename Target, typename Opt> struct evaluator{ static constexpr int arity = 0;};
@@ -80,9 +79,6 @@ namespace triqs { namespace gfs {
  template <typename Variable, typename Target=matrix_valued, typename Opt=void, typename ... U> 
   gf_view<Variable,Target,Opt> make_gf_view(U && ... x) { return gfs_implementation::factories<Variable,Target,Opt>::make_gf_view(std::forward<U>(x)...);}
 
- template <typename Variable, typename Opt=void, typename ... U> 
-  typename gfs_implementation::mesh<Variable,Opt>::type make_gf_mesh(U && ... x) { return gfs_implementation::mesh<Variable,Opt>::make(std::forward<U>(x)...);}
-
  template<typename Variable, typename Target, typename Opt> struct gf_desc{};
  template<typename Descriptor> struct gf_tag{};
 
@@ -105,7 +101,7 @@ namespace triqs { namespace gfs {
     typedef Variable variable_t;
     typedef Opt option_t;
 
-    typedef typename gfs_implementation::mesh<Variable,Opt>::type                                mesh_t;
+    typedef mesh<Variable,Opt>                                                                  mesh_t;
     typedef typename mesh_t::domain_t                                                           domain_t;
     typedef typename mesh_t::mesh_point_t                                                       mesh_point_t;
     typedef typename mesh_t::index_t                                                            mesh_index_t;

triqs/gfs/imfreq.hpp

@@ -29,19 +29,16 @@ namespace triqs { namespace gfs {
 
  struct imfreq {};
 
- namespace gfs_implementation { 
+ template<typename Opt> struct mesh<imfreq,Opt> : linear_mesh<matsubara_domain<true>> {
-
+  typedef  linear_mesh<matsubara_domain<true>> B;
-  // mesh type and its factories
+  static double m1(double beta) { return std::acos(-1)/beta;}
-  template<typename Opt> struct mesh<imfreq,Opt>                { 
+  mesh() = default;
-   typedef linear_mesh<matsubara_domain<true>> type;
+  mesh (double beta, statistic_enum S, size_t Nmax = 1025) : 
-   typedef typename type::domain_t domain_t;
+   B(typename B::domain_t(beta,S), S==Fermion?m1(beta):0, S==Fermion?(2*Nmax+1)*m1(beta): 2*Nmax*m1(beta), Nmax, without_last){}
-
-   static type make(double beta, statistic_enum S, size_t Nmax = 1025) {
-    double m1 = std::acos(-1)/beta;
-    return type( domain_t(beta,S), S==Fermion?m1:0, S==Fermion?(2*Nmax+1)*m1: 2*Nmax*m1, Nmax, without_last);
-   }
  };
 
+ namespace gfs_implementation { 
+
   //singularity
   template<typename Opt> struct singularity<imfreq,matrix_valued,Opt>  { typedef local::tail type;};
   template<typename Opt> struct singularity<imfreq,scalar_valued,Opt>  { typedef local::tail type;};
@@ -79,13 +76,13 @@ namespace triqs { namespace gfs {
      return gf_t ( std::forward<MeshType>(m), std::move(A), t, nothing() ) ;
     }
    static gf_t make_gf(double beta, statistic_enum S, tqa::mini_vector<size_t,2> shape) {
-      return make_gf(mesh<imfreq,Opt>::make(beta,S), shape, local::tail(shape));
+    return make_gf(mesh<imfreq,Opt>(beta,S), shape, local::tail(shape));
    }
    static gf_t make_gf(double beta, statistic_enum S,  tqa::mini_vector<size_t,2> shape, size_t Nmax) {
-      return make_gf(mesh<imfreq,Opt>::make(beta,S,Nmax), shape, local::tail(shape));
+    return make_gf(mesh<imfreq,Opt>(beta,S,Nmax), shape, local::tail(shape));
    }
    static gf_t make_gf(double beta, statistic_enum S, tqa::mini_vector<size_t,2> shape, size_t Nmax, local::tail_view const & t) {
-      return make_gf(mesh<imfreq,Opt>::make(beta,S,Nmax), shape, t);
+    return make_gf(mesh<imfreq,Opt>(beta,S,Nmax), shape, t);
    }
   };
 
@@ -99,13 +96,13 @@ namespace triqs { namespace gfs {
      return gf_t ( std::forward<MeshType>(m), std::move(A), t, nothing() ) ;
     }
    static gf_t make_gf(double beta, statistic_enum S) {
-     return make_gf(mesh<imfreq,Opt>::make(beta,S), local::tail(tqa::mini_vector<size_t,2> (1,1)));
+    return make_gf(mesh<imfreq,Opt>(beta,S), local::tail(tqa::mini_vector<size_t,2> (1,1)));
    }
    static gf_t make_gf(double beta, statistic_enum S, size_t Nmax) {
-    return make_gf(mesh<imfreq,Opt>::make(beta,S,Nmax), local::tail(tqa::mini_vector<size_t,2> (1,1)));
+    return make_gf(mesh<imfreq,Opt>(beta,S,Nmax), local::tail(tqa::mini_vector<size_t,2> (1,1)));
    }
    static gf_t make_gf(double beta, statistic_enum S, size_t Nmax, local::tail_view const & t) {
-    return make_gf(mesh<imfreq,Opt>::make(beta,S,Nmax), t);
+    return make_gf(mesh<imfreq,Opt>(beta,S,Nmax), t);
    }
   };
  } // gfs_implementation 

triqs/gfs/imtime.hpp

@@ -30,17 +30,16 @@ namespace triqs { namespace gfs {
 
  struct imtime {};
 
- namespace gfs_implementation { 
-
  // mesh type and its factories
-  template<typename Opt> struct mesh<imtime,Opt> {
+ template<typename Opt> struct mesh<imtime,Opt> : linear_mesh<matsubara_domain<false>> {
-   typedef linear_mesh<matsubara_domain<false>> type;
+  typedef linear_mesh<matsubara_domain<false>> B;
-   typedef typename type::domain_t domain_t;
+  mesh() = default;
-   static type make(double beta, statistic_enum S, size_t n_time_slices, mesh_kind mk=half_bins) {
+  mesh (double beta, statistic_enum S, size_t n_time_slices, mesh_kind mk=half_bins):
-    return type(domain_t(beta,S), 0, beta, n_time_slices, mk);
+   B( typename B::domain_t(beta,S), 0, beta, n_time_slices, mk){}
-   }
  };
 
+ namespace gfs_implementation { 
+
   // singularity 
   template<typename Opt> struct singularity<imtime,matrix_valued,Opt>  { typedef local::tail type;};
   template<typename Opt> struct singularity<imtime,scalar_valued,Opt>  { typedef local::tail type;};
@@ -135,10 +134,10 @@ namespace triqs { namespace gfs {
      return gf_t (std::forward<MeshType>(m), std::move(A), t, nothing(), evaluator<imtime,matrix_valued,Opt>(shape[0],shape[1]) ) ;
     }
    static gf_t make_gf(double beta, statistic_enum S,  tqa::mini_vector<size_t,2> shape, size_t Nmax=1025, mesh_kind mk= half_bins) {
-    return make_gf(mesh<imtime,Opt>::make(beta,S,Nmax,mk), shape, local::tail(shape));
+    return make_gf(mesh<imtime,Opt>(beta,S,Nmax,mk), shape, local::tail(shape));
    }
    static gf_t make_gf(double beta, statistic_enum S, tqa::mini_vector<size_t,2> shape, size_t Nmax, mesh_kind mk, local::tail_view const & t) {
-    return make_gf(mesh<imtime,Opt>::make(beta,S,Nmax,mk), shape, t);
+    return make_gf(mesh<imtime,Opt>(beta,S,Nmax,mk), shape, t);
    }
   };
 
@@ -151,10 +150,10 @@ namespace triqs { namespace gfs {
      return gf_t (std::forward<MeshType>(m), std::move(A), t, nothing());
     }
    static gf_t make_gf(double beta, statistic_enum S, size_t Nmax=1025, mesh_kind mk= half_bins) {
-    return make_gf(mesh<imtime,Opt>::make(beta,S,Nmax,mk), local::tail(tqa::mini_vector<size_t,2> (1,1)));
+    return make_gf(mesh<imtime,Opt>(beta,S,Nmax,mk), local::tail(tqa::mini_vector<size_t,2> (1,1)));
    }
    static gf_t make_gf(double beta, statistic_enum S, size_t Nmax, mesh_kind mk, local::tail_view const & t) {
-    return make_gf(mesh<imtime,Opt>::make(beta,S,Nmax,mk), t);
+    return make_gf(mesh<imtime,Opt>(beta,S,Nmax,mk), t);
    }
   };
  } // gfs_implementation.

triqs/gfs/legendre.hpp

@@ -30,15 +30,15 @@ namespace triqs { namespace gfs {
 
  struct legendre {};
 
- namespace gfs_implementation { 
-
  // mesh type and its factories
-  template<typename Opt> struct mesh<legendre,Opt> { 
+ template<typename Opt> struct mesh<legendre,Opt> :discrete_mesh<legendre_domain> { 
-   typedef discrete_mesh<legendre_domain> type;
+  typedef discrete_mesh<legendre_domain> B;
-   typedef typename type::domain_t domain_t;
+  mesh() = default;
-   static type make(double beta, statistic_enum S, size_t n_leg) { return type(domain_t(beta,S,n_leg)); }
+  mesh(double beta, statistic_enum S, size_t n_leg) : B(typename B::domain_t(beta,S,n_leg)) {}
  };
 
+ namespace gfs_implementation { 
+
   // h5 name
   template<typename Opt> struct h5_name<legendre,matrix_valued,Opt>      { static std::string invoke(){ return  "Legendre";}};
 
@@ -66,7 +66,7 @@ namespace triqs { namespace gfs {
 
    static gf_t make_gf(double beta, statistic_enum S, tqa::mini_vector<size_t,2> shape, size_t n_leg) {
     typename gf_t::data_regular_t A(shape.front_append(n_leg)); A() = 0;
-    return gf_t(mesh<legendre,Opt>::make(beta, S, n_leg), std::move(A), nothing(), nothing());
+    return gf_t(mesh<legendre,Opt>(beta, S, n_leg), std::move(A), nothing(), nothing());
    }
 
   };

triqs/gfs/meshes/linear.hpp

@@ -116,6 +116,7 @@ namespace triqs { namespace gfs {
 
    /// Mesh comparison
    bool operator == (linear_mesh const & M) const { return ((_dom == M._dom) && (size() ==M.size()) && (std::abs(xmin - M.xmin)<1.e-15) && (std::abs(xmax - M.xmax)<1.e-15));} 
+   bool operator != (linear_mesh const & M) const { return !(operator==(M));}
 
    /// Write into HDF5
    friend void h5_write (h5::group fg, std::string subgroup_name, linear_mesh const & m) {

triqs/gfs/product.hpp

@@ -31,14 +31,15 @@ namespace triqs { namespace gfs {
   static constexpr size_t size = sizeof...(Ms); 
  };
 
- namespace gfs_implementation { 
  // the mesh is simply a cartesian product
-  template<typename Opt, typename ... Ms> struct mesh<cartesian_product<Ms...>,Opt>  { 
+ template<typename Opt, typename ... Ms> struct mesh<cartesian_product<Ms...>,Opt> : mesh_product< mesh<Ms,Opt> ... > { 
-   typedef mesh_product< typename mesh<Ms,Opt>::type ... > type;
+  typedef mesh_product< mesh<Ms,Opt> ... > B;
   typedef std::tuple<Ms...> mesh_name_t;
-   static type make (typename mesh<Ms,Opt>::type ... ms) { return type{std::move(ms)...};} 
+  mesh (mesh<Ms,Opt> ... ms) : B {std::move(ms)...} {} 
  };
 
+ namespace gfs_implementation { 
+
   // h5 name : name1_x_name2_.....
   template<typename Opt, typename ... Ms> struct h5_name<cartesian_product<Ms...>,matrix_valued,Opt>  { 
    static std::string invoke(){ 
@@ -159,7 +160,7 @@ namespace triqs { namespace gfs {
 
     template<typename ... Meshes>
      static gf_t make_gf(Meshes && ... meshes) { 
-      auto m =  make_gf_mesh<cartesian_product<Ms...>,Opt>(meshes...);
+      auto m =  mesh<cartesian_product<Ms...>,Opt>(meshes...);
       typename gf_t::data_regular_t A(m.size()); 
       A() =0;
       return gf_t (m, std::move(A), nothing(), nothing());

triqs/gfs/re_im_freq.hpp

@@ -30,18 +30,17 @@ namespace triqs { namespace gfs {
   
   struct re_im_freq {};
 
-  namespace gfs_implementation {
-    
   // the mesh
-    template<typename Opt> struct mesh<re_im_freq,Opt>  { 
+  template<typename Opt> struct mesh<re_im_freq,Opt> : mesh_product<mesh<refreq,Opt>,mesh<imfreq,Opt>>  { 
-      typedef typename mesh<refreq,Opt>::type m1_t; 
+   typedef mesh<refreq,Opt> m1_t; 
-      typedef typename mesh<imfreq,Opt>::type m2_t; 
+   typedef mesh<imfreq,Opt> m2_t; 
-      typedef mesh_product<m1_t,m2_t> type;
+   typedef mesh_product<m1_t,m2_t> B;
-      static type make (double wmin, double wmax, size_t n_freq_re, double beta, statistic_enum S, size_t n_freq_im) { 
+   mesh (double wmin, double wmax, size_t n_freq_re, double beta, statistic_enum S, size_t n_freq_im) :
-        return {gfs::make_gf_mesh<refreq,Opt>(wmin,wmax,n_freq_re,full_bins), make_gf_mesh<imfreq,Opt>(beta, S, n_freq_im)};
+    B { mesh<refreq,Opt>(wmin,wmax,n_freq_re,full_bins), mesh<imfreq,Opt>(beta, S, n_freq_im)} {}
-      }
   };
 
+  namespace gfs_implementation {
+
    // singularity
    template<typename Opt> struct singularity<re_im_freq,scalar_valued,Opt>  { typedef gf<refreq,scalar_valued> type;};
 
@@ -73,17 +72,17 @@ namespace triqs { namespace gfs {
 
    template<typename Opt> struct factories<re_im_freq, scalar_valued,Opt> {
     typedef gf<re_im_freq, scalar_valued,Opt> gf_t;
-//       typedef typename mesh<re_im_freq, Opt>::type mesh_t;
+    //       typedef typename mesh<re_im_freq, Opt>::type mesh_t;
 
     static gf_t make_gf(double wmin, double wmax, size_t nw, double beta, statistic_enum S, size_t nwn) { 
-        auto m =  make_gf_mesh<re_im_freq,Opt>(wmin, wmax, nw, beta, S, nwn);
+     auto m =  mesh<re_im_freq,Opt>(wmin, wmax, nw, beta, S, nwn);
      typename gf_t::data_regular_t A(m.size()); 
      A() =0;
      return gf_t (m, std::move(A), gfs::make_gf<refreq,scalar_valued>(wmin, wmax, nw), nothing() ) ;
     }
    };
 
-} // gfs_implementation
+  } // gfs_implementation
 
 }}
 #endif

triqs/gfs/re_im_time.hpp

@@ -30,18 +30,17 @@ namespace triqs { namespace gfs {
 
  struct re_im_time {};
 
- namespace gfs_implementation { 
-
  // the mesh
-  template<typename Opt> struct mesh<re_im_time,Opt>  { 
+ template<typename Opt> struct mesh<re_im_time,Opt> :   mesh_product<mesh<retime,Opt>,mesh<imtime,Opt>>  { 
-   typedef typename mesh<retime,Opt>::type m1_t; 
+  typedef mesh<retime,Opt> m1_t; 
-   typedef typename mesh<imtime,Opt>::type m2_t; 
+  typedef mesh<imtime,Opt> m2_t; 
-   typedef mesh_product<m1_t,m2_t> type;
+  typedef mesh_product<m1_t,m2_t> B;
-   static type make (double tmin, double tmax, size_t nt, double beta, statistic_enum S, size_t ntau, mesh_kind mk=full_bins) { 
+  mesh (double tmin, double tmax, size_t nt, double beta, statistic_enum S, size_t ntau, mesh_kind mk=full_bins) :
-    return {make_gf_mesh<retime,Opt>(tmin,tmax,nt), make_gf_mesh<imtime,Opt>(beta,S, ntau, mk)};
+   B {mesh<retime,Opt>(tmin,tmax,nt), mesh<imtime,Opt>(beta,S, ntau, mk)} {}
-   }
  };
 
+ namespace gfs_implementation { 
+
   // singularity
   //template<typename Opt> struct singularity<re_im_time, scalar_valued, Opt>  { typedef gf<retime,scalar_valued> type;};
 
@@ -87,7 +86,7 @@ namespace triqs { namespace gfs {
     }
 
    static gf_t make_gf(double tmin, double tmax, size_t nt, double beta, statistic_enum S, size_t ntau, mesh_kind mk=full_bins) { 
-    auto m =  make_gf_mesh<re_im_time,Opt>(tmin,tmax, nt, beta, S, ntau, mk);
+    auto m =  mesh<re_im_time,Opt>(tmin,tmax, nt, beta, S, ntau, mk);
     typename gf_t::data_regular_t A(m.size()); 
     A() =0;
     return gf_t (m, std::move(A), nothing(), nothing());

triqs/gfs/refreq.hpp

@@ -30,16 +30,15 @@ namespace triqs { namespace gfs {
 
  struct refreq {};
 
- namespace gfs_implementation { 
+ template<typename Opt> struct mesh<refreq,Opt> : linear_mesh<R_domain> {
-  
+  typedef linear_mesh<R_domain> B;
-  template<typename Opt> struct mesh<refreq,Opt>                { 
+  mesh() = default;
-   typedef linear_mesh<R_domain> type;
+  mesh (double wmin, double wmax, size_t n_freq, mesh_kind mk=full_bins) : 
-   typedef typename type::domain_t domain_t;
+   B(typename B::domain_t(), wmin, wmax, n_freq, mk){}
-   static type make(double wmin, double wmax, size_t n_freq, mesh_kind mk=full_bins) {
-    return type(domain_t(), wmin, wmax, n_freq, mk);
-   }
  };
 
+ namespace gfs_implementation { 
+
   // singularity 
   template<typename Opt> struct singularity<refreq,matrix_valued,Opt>  { typedef local::tail type;};
   template<typename Opt> struct singularity<refreq,scalar_valued,Opt>  { typedef local::tail type;};
@@ -83,12 +82,12 @@ namespace triqs { namespace gfs {
 
      static gf_t make_gf(double wmin, double wmax, size_t n_freq, tqa::mini_vector<size_t,2> shape) {
       typename gf_t::data_regular_t A(shape.front_append(n_freq)); A() =0;
-    return gf_t(mesh<refreq,Opt>::make(wmin, wmax, n_freq, full_bins), std::move(A), local::tail(shape), nothing());
+      return gf_t(mesh<refreq,Opt>(wmin, wmax, n_freq, full_bins), std::move(A), local::tail(shape), nothing());
      }
 
      static gf_t make_gf(double wmin, double wmax, size_t n_freq, tqa::mini_vector<size_t,2> shape, mesh_kind mk) {
       typename gf_t::data_regular_t A(shape.front_append(n_freq)); A() =0;
-    return gf_t(mesh<refreq,Opt>::make(wmin, wmax, n_freq, mk), std::move(A), local::tail(shape), nothing());
+      return gf_t(mesh<refreq,Opt>(wmin, wmax, n_freq, mk), std::move(A), local::tail(shape), nothing());
      }
     };
 
@@ -104,17 +103,17 @@ namespace triqs { namespace gfs {
 
      static gf_t make_gf(double wmin, double wmax, size_t n_freq) {
       typename gf_t::data_regular_t A(n_freq); A() =0;
-     return gf_t(mesh<refreq,Opt>::make(wmin, wmax, n_freq), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
+      return gf_t(mesh<refreq,Opt>(wmin, wmax, n_freq), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
      }
 
      static gf_t make_gf(double wmin, double wmax, size_t n_freq, mesh_kind mk) {
       typename gf_t::data_regular_t A(n_freq); A() =0;
-    return gf_t(mesh<refreq,Opt>::make(wmin, wmax, n_freq, mk), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
+      return gf_t(mesh<refreq,Opt>(wmin, wmax, n_freq, mk), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
      }
 
     };
    } // gfs_implementation
 
-}}
+ }}
 #endif
 

triqs/gfs/refreq_imtime.hpp

@@ -30,18 +30,16 @@ namespace triqs { namespace gfs {
 
  struct refreq_imtime {};
 
-  namespace gfs_implementation { 
-    
  // the mesh
-    template<typename Opt> struct mesh<refreq_imtime,Opt>  {
+ template<typename Opt> struct mesh<refreq_imtime,Opt> :mesh_product<mesh<refreq,Opt>,mesh<imtime,Opt>>  {
-      typedef typename mesh<refreq,Opt>::type m1_t; 
+  typedef mesh<refreq,Opt> m1_t; 
-      typedef typename mesh<imtime,Opt>::type m2_t; 
+  typedef mesh<imtime,Opt> m2_t; 
-      typedef mesh_product<m1_t,m2_t> type;
+  typedef mesh_product<m1_t,m2_t> B;
-      static type make (double wmin, double wmax, size_t n_freq, double beta, statistic_enum S, size_t nt, mesh_kind mk=full_bins ) { 
+  mesh (double wmin, double wmax, size_t n_freq, double beta, statistic_enum S, size_t nt, mesh_kind mk=full_bins ) :
-        return {make_gf_mesh<refreq,Opt>(wmin,wmax,n_freq), make_gf_mesh<imtime,Opt>(beta,S,nt,mk)};
+   B {mesh<refreq,Opt>(wmin,wmax,n_freq), mesh<imtime,Opt>(beta,S,nt,mk)} {}
-      }
  };
 
+ namespace gfs_implementation { 
   // singularity
   //template<typename Opt> struct singularity<refreq_imtime,scalar_valued,Opt>  { typedef gf<retime,scalar_valued> type;};
 
@@ -89,7 +87,7 @@ namespace triqs { namespace gfs {
     }
 
    static gf_t make_gf(double wmin, double wmax, size_t n_freq, double beta, statistic_enum S, size_t nt, mesh_kind mk=full_bins) { 
-      auto m =  make_gf_mesh<refreq_imtime,Opt>(wmin, wmax, n_freq, beta,S, nt, mk);
+    auto m =  mesh<refreq_imtime,Opt>(wmin, wmax, n_freq, beta,S, nt, mk);
     typename gf_t::data_regular_t A(m.size()); 
     A() =0;
     return gf_t (m, std::move(A), nothing(), nothing() ) ;

triqs/gfs/retime.hpp

@@ -30,18 +30,14 @@ namespace triqs { namespace gfs {
 
  struct retime {};
 
- namespace gfs_implementation { 
+ template<typename Opt> struct mesh<retime,Opt> : linear_mesh<R_domain>  { 
-
+  typedef linear_mesh<R_domain> B;
-  template<typename Opt> struct mesh<retime,Opt> { 
+  mesh() = default;
-   typedef linear_mesh<R_domain> type;
+  mesh(double tmin, double tmax, size_t n_points, mesh_kind mk=full_bins) : B (typename B::domain_t(), tmin, tmax, n_points, mk){}
-   typedef typename type::domain_t domain_t;
-
-   static type make(double tmin, double tmax, size_t n_points, mesh_kind mk=full_bins) {
-     return type(domain_t(), tmin, tmax, n_points, mk);
-   }
-   
  };
 
+ namespace gfs_implementation { 
+
   // singularity 
   template<typename Opt> struct singularity<retime,matrix_valued,Opt>  { typedef local::tail type;};
   template<typename Opt> struct singularity<retime,scalar_valued,Opt>  { typedef local::tail type;};
@@ -85,12 +81,12 @@ namespace triqs { namespace gfs {
 
    static gf_t make_gf(double tmin, double tmax, size_t n_points, tqa::mini_vector<size_t,2> shape, mesh_kind mk) {
     typename gf_t::data_regular_t A(shape.front_append(n_points)); A() =0;
-    return gf_t(mesh<retime,Opt>::make(tmin, tmax, n_points,mk), std::move(A), local::tail(shape), nothing());
+    return gf_t(mesh<retime,Opt>(tmin, tmax, n_points,mk), std::move(A), local::tail(shape), nothing());
    }
 
    static gf_t make_gf(double tmin, double tmax, size_t n_points, tqa::mini_vector<size_t,2> shape) {
     typename gf_t::data_regular_t A(shape.front_append(n_points)); A() =0;
-    return gf_t(mesh<retime,Opt>::make(tmin, tmax, n_points), std::move(A), local::tail(shape), nothing());
+    return gf_t(mesh<retime,Opt>(tmin, tmax, n_points), std::move(A), local::tail(shape), nothing());
    }
 
   };
@@ -107,12 +103,12 @@ namespace triqs { namespace gfs {
 
    static gf_t make_gf(double tmin, double tmax, size_t n_points, mesh_kind mk) {
     typename gf_t::data_regular_t A(n_points); A() =0;
-    return gf_t(mesh<retime,Opt>::make(tmin, tmax, n_points,mk), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
+    return gf_t(mesh<retime,Opt>(tmin, tmax, n_points,mk), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
    }
 
    static gf_t make_gf(double tmin, double tmax, size_t n_points) {
     typename gf_t::data_regular_t A(n_points); A() =0;
-    return gf_t(mesh<retime,Opt>::make(tmin, tmax, n_points), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
+    return gf_t(mesh<retime,Opt>(tmin, tmax, n_points), std::move(A), local::tail(tqa::mini_vector<size_t,2>(1,1)), nothing());
    }
 
   };

triqs/gfs/two_real_times.hpp

@@ -29,24 +29,17 @@ namespace triqs { namespace gfs {
 
  struct two_real_times {};
 
- namespace gfs_implementation { 
-
  // the mesh
-  template<typename Opt> struct mesh<two_real_times,Opt>  { 
+ template<typename Opt> struct mesh<two_real_times,Opt> :mesh_product<mesh<retime,Opt> ,mesh<retime,Opt> >  { 
-   typedef typename mesh<retime,Opt>::type m1_t; 
+  typedef mesh_product<mesh<retime,Opt> ,mesh<retime,Opt> > B;
-   typedef mesh_product<m1_t,m1_t> type;
+  mesh() = default;
-   static type make (double tmax, double n_time_slices) { 
+  mesh (double tmax, double n_time_slices) :
-#ifndef TRIQS_WORKAROUND_INTEL_COMPILER_BUGS 
+   B(mesh<retime,Opt> ( 0, tmax,n_time_slices, full_bins), 
-    m1_t m1({},0, tmax,n_time_slices, full_bins);
+     mesh<retime,Opt> ( 0, tmax,n_time_slices, full_bins) ) {}
-    return {m1,m1};
-#else
-    m1_t m1(typename m1_t::domain_t(),0, tmax,n_time_slices, full_bins);
-    type m(m1,m1);
-    return m; 
-#endif
-   }
  };
 
+ namespace gfs_implementation { 
+
   // h5 name
   template<typename Opt> struct h5_name<two_real_times,matrix_valued,Opt> { static std::string invoke(){ return  "GfTwoRealTime";}};
 
@@ -56,11 +49,11 @@ namespace triqs { namespace gfs {
    struct get_closest_point <two_real_times,matrix_valued,Opt> {
     typedef typename mesh<two_real_times, Opt>::type mesh_t;
 
-//    // NOT FINISHED, NOT TESTED 
+    //    // NOT FINISHED, NOT TESTED 
-//     template<typename G, typename T>
+    //     template<typename G, typename T>
-//      static typename mesh_t::index_t invoke(G const * g, closest_pt_wrap<T,T> const & p) {
+    //      static typename mesh_t::index_t invoke(G const * g, closest_pt_wrap<T,T> const & p) {
-//       return std::floor( double(p.value) / g->mesh().delta() + 0.5);
+    //       return std::floor( double(p.value) / g->mesh().delta() + 0.5);
-//      }
+    //      }
 
    };
 
@@ -91,10 +84,10 @@ namespace triqs { namespace gfs {
 
   template<typename Opt> struct factories<two_real_times, matrix_valued,Opt> {
    typedef gf<two_real_times, matrix_valued,Opt> gf_t;
-   typedef typename mesh<two_real_times, Opt>::type mesh_t;
+   typedef mesh<two_real_times, Opt> mesh_t;
 
    static gf_t make_gf(double tmax, double n_time_slices, tqa::mini_vector<size_t,2> shape) {
-    auto m =  mesh<two_real_times,Opt>::make(tmax, n_time_slices);
+    auto m =  mesh<two_real_times,Opt>(tmax, n_time_slices);
     typename gf_t::data_regular_t A(shape.front_append(m.size())); A() =0;
     return gf_t (m, std::move(A), nothing(), nothing() ) ;
    }