starter.cpp

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#include "starter.h"
#include "../utils/map_to_index.h"
#include "../utils/runtime_error.h"

namespace ut = utils;

/* ------------------------------------------------------------------ */

void Starter::sort_by_id(
  Json &data)
{
  auto map = ut::map_to_index(data, "id");
  auto vec = Vec<std::pair<int,int>>(map.begin(), map.end());

  std::sort(vec.begin(), vec.end());

  auto tmp = Json::array();
  tmp.get_ref<Json::array_t&>().reserve(vec.size());

  for (const auto &pair : vec)
  {
    tmp.push_back(data[pair.second]);
  }

  data.swap(tmp);
}

/* ------------------------------------------------------------------ */

void Starter::compute_body(
  const ElPtr &elem,
  Json &data)
{
  if (data != nullptr)
  {
    ut::runtime_error("Starter accepts empty data only");
  }

  compute_common(elem, data);

  elem->update_keys();

  if (data.is_array() && elem->check_optional_keys("id") && do_sorting_by_id)
  {
    sort_by_id(data);
  }
}