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gf: fix auto_assign for chained calls.

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- g[k_][om_] << expression was not working.
 now  implemented like for std::vector adapter.
This commit is contained in:
Olivier Parcollet 2013-10-26 13:49:24 +02:00
parent 579368f24b
commit 12cb2db2ba
2 changed files with 54 additions and 24 deletions
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9
test/triqs/gfs/block.cpp
View File

@ -61,6 +61,15 @@ int main() {
for (auto & g : View) { g[0] = 20;}
for (auto & g : B1) { g[0] = 20;}
// check chaining of clef
clef::placeholder<0> b_;
clef::placeholder<1> om_;
B1[b_][om_] << b_ / ( om_ + 2);
// does not work
//std::vector<gf<imfreq>> green_v;
//green_v.emplace_back({beta, Fermion}, {2,2} );
}
TRIQS_CATCH_AND_ABORT;
}

69
triqs/gfs/gf.hpp
View File

@ -324,32 +324,53 @@ namespace triqs { namespace gfs {
friend std::ostream & operator << (std::ostream & out, gf_impl const & x) { return out<<(IsView ? "gf_view": "gf");}
friend std::ostream & triqs_nvl_formal_print(std::ostream & out, gf_impl const & x) { return out<<(IsView ? "gf_view": "gf");}
// Interaction with the CLEF library : auto assignment of the gf (gf(om_) << expression fills the functions by evaluation of expression)
template <typename RHS> friend void triqs_clef_auto_assign(gf_impl &g, RHS const &rhs) {
// access to the data . Beware, we view it as a *matrix* NOT an array... (crucial for assignment to scalars !)
g.triqs_clef_auto_assign_impl(rhs, typename std::is_base_of<tag::composite,mesh_t>::type());
assign_from_expression(g.singularity(),rhs);
// if f is an expression, replace the placeholder with a simple tail. If f is a function callable on freq_infty,
// it uses the fact that tail_non_view_t can be casted into freq_infty
}
};
// enable the writing g[om_] << .... also
template<typename RHS> friend void triqs_clef_auto_assign_subscript (gf_impl & g, RHS rhs) { triqs_clef_auto_assign(g,rhs);}
// -------------------------Interaction with the CLEF library : auto assignement implemnetation--------------------------------------
// auto assignment of the gf (gf(om_) << expression fills the functions by evaluation of expression)
private:
template <typename RHS> void triqs_clef_auto_assign_impl(RHS const &rhs, std::integral_constant<bool, false>) {
for (auto const &w : this->mesh()) {
(*this)[w] = rhs(w);
}
//for (auto const & w: this->mesh()) (*this)[w] = rhs(typename B::mesh_t::mesh_point_t::cast_t(w));
}
template <typename RHS> void triqs_clef_auto_assign_impl(RHS const &rhs, std::integral_constant<bool, true>) {
for (auto const & w: this->mesh()) {
(*this)[w] = triqs::tuple::apply(rhs,w.components_tuple());
}
//for (auto w: this->mesh()) triqs::tuple::apply(*this,w.components_tuple()) = triqs::tuple::apply(rhs,w.components_tuple());
}
};
template <typename RHS, typename Variable, typename Target, typename Opt, bool IsView>
void triqs_clef_auto_assign(gf_impl<Variable, Target, Opt, IsView, false> &g, RHS const &rhs) {
triqs_clef_auto_assign_impl(g, rhs, typename std::is_base_of<tag::composite, gf_mesh<Variable,Opt>>::type());
assign_from_expression(g.singularity(), rhs);
// access to the data . Beware, we view it as a *matrix* NOT an array... (crucial for assignment to scalars !)
// if f is an expression, replace the placeholder with a simple tail. If f is a function callable on freq_infty,
// it uses the fact that tail_non_view_t can be casted into freq_infty
}
// enable the writing g[om_] << .... also
template <typename RHS, typename Variable, typename Target, typename Opt, bool IsView>
void triqs_clef_auto_assign_subscript(gf_impl<Variable, Target, Opt, IsView, false> &g, RHS const &rhs) {
triqs_clef_auto_assign(g, rhs);
}
template <bool B, typename G, typename RHS>
void triqs_gf_clef_auto_assign_impl_aux_assign(G &&g, RHS &&rhs, std::integral_constant<bool, B>) {
std::forward<G>(g) = std::forward<RHS>(rhs);
}
template <typename G, bool B, typename Expr, int... Is>
void triqs_gf_clef_auto_assign_impl_aux_assign(G &&g, clef::make_fun_impl<Expr, Is...> &&rhs, std::integral_constant<bool, B>) {
triqs_clef_auto_assign_impl(std::forward<G>(g), std::forward<clef::make_fun_impl<Expr, Is...>>(rhs), std::integral_constant<bool, B>());
}
template <typename RHS, typename Variable, typename Target, typename Opt, bool IsView>
void triqs_clef_auto_assign_impl(gf_impl<Variable, Target, Opt, IsView, false> &g, RHS const &rhs,
std::integral_constant<bool, false>) {
for (auto const &w : g.mesh()) {
triqs_gf_clef_auto_assign_impl_aux_assign(g[w], rhs(w), std::integral_constant<bool, false>());
//(*this)[w] = rhs(w);
}
}
template <typename RHS, typename Variable, typename Target, typename Opt, bool IsView>
void triqs_clef_auto_assign_impl(gf_impl<Variable, Target, Opt, IsView, false> &g, RHS const &rhs,
std::integral_constant<bool, true>) {
for (auto const &w : g.mesh()) {
triqs_gf_clef_auto_assign_impl_aux_assign(g[w], triqs::tuple::apply(rhs, w.components_tuple()), std::integral_constant<bool, true>());
//(*this)[w] = triqs::tuple::apply(rhs, w.components_tuple());
}
}
// -------------------------The regular class of GF --------------------------------------------------------