Rules.h

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//
//
//  Copyright (C) 2020 Schrödinger, 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.
//
#pragma once
 
#include <initializer_list>
#include <vector>
 
#include "Rule5.h"
#include "SequenceRule.h"
 
namespace RDKit {
namespace CIPLabeler {
 
class Rules : public SequenceRule {
 public:
  Rules() = delete;
 
  Rules(std::initializer_list<SequenceRule *>&& rules) {
    for (auto &rule : rules) {
      add(rule);
    }
  }
 
  ~Rules() override {
    for (auto &rule : d_rules) {
      delete rule;
    }
  }
 
  int getNumSubRules() const { return d_rules.size(); }
 
  int compare(const Edge *o1, const Edge *o2) const override {
    // Try using each rules. The rules will expand the search exhaustively
    // to all child substituents
    for (const auto &rule : d_rules) {
      // compare expands exhaustively across the whole graph
      int value = rule->recursiveCompare(o1, o2);
      if (value != 0) {
        return value;
      }
    }
    return 0;
  }
 
  int getComparision(const Edge *a, const Edge *b,
                     bool /* unused */) const override {
    // Try using each rules. The rules will expand the search exhaustively
    // to all child substituents
    for (const auto &rule : d_rules) {
      // compare expands exhaustively across the whole graph
      int value = rule->recursiveCompare(a, b);
 
      if (value != 0) {
        return value;
      }
    }
 
    return 0;
  }
 
 private:
  void add(SequenceRule *rule) {
    PRECONDITION(rule != nullptr, "null rule provided");
    d_rules.push_back(rule);
    rule->setSorter(new Sort(d_rules));
  }
 
  std::vector<const SequenceRule *> d_rules;
};
 
}  // namespace CIPLabeler
}  // namespace RDKit