IterationConfiguration.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef ALICEO2_ITSMFT_TRACKING_ITERATIONCONFIGURATION_H_
#define ALICEO2_ITSMFT_TRACKING_ITERATIONCONFIGURATION_H_
 
#include <optional>
#include <ranges>
#include <vector>
 
#include "ITSMFTTracking/Configuration.h"
#include "ITSMFTTracking/TraversalTopology.h"
#include "ITSMFTTracking/detail/TrackingKernelParameters.h"
 
namespace o2::itsmft::tracking
{
 
// Tracker-owned, immutable instructions for one tracking iteration.
struct IterationConfiguration {
  IterationParameters parameters;
  TraversalTopology topology;
  TrackingKernelParameters kernelParameters{};
 
  // Dense IDs index the owned topology directly; schedules retain their own order.
  auto edgeIds() const noexcept
  {
    return std::views::iota(uint16_t{0}, static_cast<uint16_t>(topology.edges.size())) |
           std::views::transform([](uint16_t id) { return EdgeId{id}; });
  }
  auto cellIds() const noexcept
  {
    return std::views::iota(uint16_t{0}, static_cast<uint16_t>(topology.paths.size())) |
           std::views::transform([](uint16_t id) { return CellPathId{id}; });
  }
 
  bool hasLayer(LayerId id) const noexcept
  {
    return id.isValid() && id.value() < topology.nLayers;
  }
 
  std::optional<uint16_t> getEdgeSlot(EdgeId id) const noexcept
  {
    return id.isValid() && id.value() < topology.edges.size() ? std::optional<uint16_t>{id.value()} : std::nullopt;
  }
 
  std::optional<uint16_t> getCellSlot(CellPathId id) const noexcept
  {
    return id.isValid() && id.value() < topology.paths.size() ? std::optional<uint16_t>{id.value()} : std::nullopt;
  }
 
  TraversalTopologyView getTopologyView(SurfaceCatalogView catalog) const noexcept
  {
    return topology.getView(catalog);
  }
};
 
} // namespace o2::itsmft::tracking
 
#endif