rdkit/External/GA/ga/IntegerStringChromosomePolicy.cpp

//
//  Copyright (C) 2020 Gareth Jones, Glysade LLC
//
//   @@ All Rights Reserved @@
//  This file is part of the RDKit.
//  The contents are covered by the terms of the BSD license
//  which is included in the file license.txt, found at the root
//  of the RDKit source tree.
//

#include "IntegerStringChromosomePolicy.h"

namespace GapeGa {

using namespace GarethUtil;

IntegerStringChromosomePolicy::IntegerStringChromosomePolicy(RandomUtil &rng_,
                                                             int size_)
    : rng(rng_), size{size_}, maxs{new int[size]}, allowNulls{new bool[size]} {
  setMax(10);
  setAllowNulls(false);
}

IntegerStringChromosomePolicy::~IntegerStringChromosomePolicy() {
  delete[] maxs;
  delete[] allowNulls;
}

int IntegerStringChromosomePolicy::mutate(int pos, int currentValue) const {
  assert(pos >= 0 && pos < size);
  int max = maxs[pos];
  int min = allowNulls[pos] ? -1 : 0;
  int val = rng.randomInt(min, max - 1);
  if (val >= currentValue) {
    val++;
  }
  return val;
}

int IntegerStringChromosomePolicy::initialize(int pos) const {
  assert(pos >= 0 && pos < size);
  int max = maxs[pos];
  int min = allowNulls[pos] ? -1 : 0;
  return rng.randomInt(min, max);
}

void IntegerStringChromosomePolicy::setMax(int max) {
  for (int i = 0; i < size; i++) {
    maxs[i] = max;
  }
}

void IntegerStringChromosomePolicy::setMax(int pos, int max) {
  assert(pos >= 0 && pos < size);
  maxs[pos] = max;
}

void IntegerStringChromosomePolicy::setAllowNulls(bool allow) {
  for (int i = 0; i < size; i++) {
    allowNulls[i] = allow;
  }
}

void IntegerStringChromosomePolicy::setAllowNulls(int pos, bool allow) {
  assert(pos >= 0 && pos < size);
  allowNulls[pos] = allow;
}

}  // namespace GapeGa