map.h

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/*
 * Copyright 2018 Universidad Carlos III de Madrid
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef GRPPI_MAP_H
#define GRPPI_MAP_H
 
#include <utility>
 
#include "common/execution_traits.h"
#include "common/iterator_traits.h"
 
namespace grppi {
 
template<typename Execution, typename ...InputIterators, typename InputIt,
        typename OutputIt, typename Transformer,
        requires_iterators<InputIterators...> = 0,
        requires_iterator<InputIt> = 0,
        requires_iterator<OutputIt> = 0>
void map(const Execution & ex, std::tuple<InputIterators...> firsts,
         InputIt last, OutputIt first_out,
         Transformer transform_op)
{
  static_assert(supports_map<Execution>(),
      "map not supported on execution type");
  ex.map(firsts, first_out,
      std::distance(std::get<0>(firsts),last), transform_op);
}
 
 
 
template<typename Execution, typename ...InputIterators,
        typename OutputIt, typename Transformer,
        requires_iterators<InputIterators...> = 0,
        requires_iterator<OutputIt> = 0>
void map(const Execution & ex, std::tuple<InputIterators...> firsts,
         std::size_t range, OutputIt first_out,
         Transformer transformer_op)
{
  static_assert(supports_map<Execution>(),
      "map not supported on execution type");
  ex.map(firsts, first_out, range, transformer_op);
}
 
template <typename Execution, typename InputIt, typename OutputIt, 
          typename Transformer,
          requires_iterator<InputIt> = 0,
          requires_iterator<OutputIt> = 0>
void map(const Execution & ex,
         InputIt first, InputIt last, OutputIt first_out, 
         Transformer transform_op) 
{
  static_assert(supports_map<Execution>(),
      "map not supported on execution type");
  ex.map(make_tuple(first), first_out,
      std::distance(first, last), transform_op);
}
 
template <typename Execution, typename InputIt, typename OutputIt, typename Transformer,
          typename ... OtherInputIts,
          requires_iterator<InputIt> = 0,
          requires_iterator<OutputIt> = 0>
[[deprecated("This version of the interface is deprecated.\n"
             "If you want to use multiple inputs, use a tuple instead.")]]
void map(const Execution & ex,
         InputIt first, InputIt last, OutputIt first_out, 
         Transformer transform_op, 
         OtherInputIts ... other_firsts) 
{
  static_assert(supports_map<Execution>(),
      "map not supported on execution type");
  ex.map(make_tuple(first,other_firsts...), first_out,
      std::distance(first,last), transform_op);
}
 
}
 
#endif