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117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/ActionSet.h
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: neo <cossu@post.kek.jp>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef ACTION_SET_H
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#define ACTION_SET_H
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namespace Grid {
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// Should drop this namespace here
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namespace QCD {
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//////////////////////////////////
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// Indexing of tuple types
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//////////////////////////////////
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template <class T, class Tuple>
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struct Index;
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template <class T, class... Types>
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struct Index<T, std::tuple<T, Types...>> {
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static const std::size_t value = 0;
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};
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template <class T, class U, class... Types>
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struct Index<T, std::tuple<U, Types...>> {
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static const std::size_t value = 1 + Index<T, std::tuple<Types...>>::value;
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};
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////////////////////////////////////////////
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// Action Level
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// Action collection
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// in a integration level
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// (for multilevel integration schemes)
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////////////////////////////////////////////
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template <class Field, class Repr = NoHirep >
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struct ActionLevel {
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public:
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unsigned int multiplier;
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// Fundamental repr actions separated because of the smearing
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typedef Action<Field>* ActPtr;
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// construct a tuple of vectors of the actions for the corresponding higher
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// representation fields
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typedef typename AccessTypes<Action, Repr>::VectorCollection action_collection;
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typedef typename AccessTypes<Action, Repr>::FieldTypeCollection action_hirep_types;
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action_collection actions_hirep;
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std::vector<ActPtr>& actions;
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explicit ActionLevel(unsigned int mul = 1) :
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actions(std::get<0>(actions_hirep)), multiplier(mul) {
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// initialize the hirep vectors to zero.
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// apply(this->resize, actions_hirep, 0); //need a working resize
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assert(mul >= 1);
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}
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template < class GenField >
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void push_back(Action<GenField>* ptr) {
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// insert only in the correct vector
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std::get< Index < GenField, action_hirep_types>::value >(actions_hirep).push_back(ptr);
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};
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template <class ActPtr>
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static void resize(ActPtr ap, unsigned int n) {
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ap->resize(n);
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}
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// Loop on tuple for a callable function
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template <std::size_t I = 1, typename Callable, typename ...Args>
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inline typename std::enable_if<I == std::tuple_size<action_collection>::value, void>::type apply(Callable, Repr& R,Args&...) const {}
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template <std::size_t I = 1, typename Callable, typename ...Args>
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inline typename std::enable_if<I < std::tuple_size<action_collection>::value, void>::type apply(Callable fn, Repr& R, Args&... arguments) const {
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fn(std::get<I>(actions_hirep), std::get<I>(R.rep), arguments...);
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apply<I + 1>(fn, R, arguments...);
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}
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};
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// Define the ActionSet
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template <class GaugeField, class R>
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using ActionSet = std::vector<ActionLevel<GaugeField, R> >;
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} // QCD
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} // Grid
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#endif // ACTION_SET_H
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