json-validator/include/jvalidate/constraint/number_constraint.h

#pragma once

#include <cmath>
#include <iostream>

#include <jvalidate/adapter.h>
#include <jvalidate/constraint/constraint.h>
#include <jvalidate/forward.h>
#include <limits>

namespace jvalidate::constraint {
class MaximumConstraint : public SimpleConstraint<MaximumConstraint> {
public:
  double value;
  bool exclusive;

public:
  MaximumConstraint(double value, bool exclusive) : value(value), exclusive(exclusive) {}

  bool operator()(double arg) const { return exclusive ? arg < value : arg <= value; }
};

class MinimumConstraint : public SimpleConstraint<MinimumConstraint> {
public:
  double value;
  bool exclusive;

public:
  MinimumConstraint(double value, bool exclusive) : value(value), exclusive(exclusive) {}

  bool operator()(double arg) const { return exclusive ? arg > value : arg >= value; }
};

class MultipleOfConstraint : public SimpleConstraint<MultipleOfConstraint> {
public:
  double value;

public:
  MultipleOfConstraint(double value) : value(value) {}

  bool operator()(double arg) const {
    // TODO(samjaffe): ...
    if (std::isinf(arg)) {
      return false;
    }
    auto val = arg / value;
    return std::abs(std::floor(val) - val) < std::numeric_limits<double>::epsilon();
  }
};
}