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> {
private:
  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> {
private:
  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> {
private:
  double value_;

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

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