yoga/yoga/YGFloatOptional.cpp

/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

#include "YGFloatOptional.h"
#include <cstdlib>
#include <iostream>
#include "Yoga.h"

YGFloatOptional::YGFloatOptional(const float& value) {
  if (YGFloatIsUndefined(value)) {
    isUndefined_ = true;
    value_ = 0;
  } else {
    value_ = value;
    isUndefined_ = false;
  }
}

YGFloatOptional::YGFloatOptional() : value_(0), isUndefined_(true) {}

const float& YGFloatOptional::getValue() const {
  if (isUndefined_) {
    // Abort, accessing a value of an undefined float optional
    std::cerr << "Tried to get value of an undefined YGFloatOptional\n";
    std::exit(EXIT_FAILURE);
  }
  return value_;
}

void YGFloatOptional::setValue(const float& val) {
  value_ = val;
  isUndefined_ = false;
}

const bool& YGFloatOptional::isUndefined() const {
  return isUndefined_;
}

bool YGFloatOptional::operator==(const YGFloatOptional& op) const {
  if (isUndefined_ == op.isUndefined()) {
    return isUndefined_ ? true : value_ == op.getValue();
  }
  return false;
}

bool YGFloatOptional::operator!=(const YGFloatOptional& op) const {
  return !(*this == op);
}

bool YGFloatOptional::operator==(const float& val) const {
  if (YGFloatIsUndefined(val) == isUndefined_) {
    return isUndefined_ ? true : val == value_;
  }
  return false;
}

bool YGFloatOptional::operator!=(const float& val) const {
  return !(*this == val);
}

YGFloatOptional YGFloatOptional::operator+(const YGFloatOptional& op) {
  if (!isUndefined_ && !op.isUndefined_) {
    return YGFloatOptional(value_ + op.value_);
  }
  return YGFloatOptional();
}

bool YGFloatOptional::operator>(const YGFloatOptional& op) const {
  if (isUndefined_ || op.isUndefined_) {
    return false;
  }
  return value_ > op.value_;
}

bool YGFloatOptional::operator<(const YGFloatOptional& op) const {
  if (isUndefined_ || op.isUndefined_) {
    return false;
  }
  return value_ < op.value_;
}

bool YGFloatOptional::operator>=(const YGFloatOptional& op) const {
  return *this == op ? true : *this > op;
}

bool YGFloatOptional::operator<=(const YGFloatOptional& op) const {
  return *this == op ? true : *this < op;
}