checkNumber function

void checkNumber(dynamic input, String parameterName, { num? multipleOf, num? maximum, num? exclusiveMaximum, num? minimum, num? exclusiveMinimum, })

Checks the input against the given Number validators.

Throws an FormatException when the input is not:

• divisible by multipleOf
• smaller than or equal to maximum
• smaller than exclusiveMaximum
• bigger than or equal to minimum
• bigger than exclusiveMinimum

Implementation

void checkNumber(
  dynamic input,
  String parameterName, {
  num? multipleOf,
  num? maximum,
  num? exclusiveMaximum,
  num? minimum,
  num? exclusiveMinimum,
}) {
  num value;
  if (input is JsonObject && input.isNum) {
    value = input.asNum;
  } else if (input is num) {
    value = input;
  } else {
    return;
  }

  if (multipleOf != null && value % multipleOf != 0) {
    throw FormatException('Parameter "$parameterName" must be a multiple of $multipleOf');
  }
  if (maximum != null && value > maximum) {
    throw FormatException('Parameter "$parameterName" must smaller than or equal to $maximum');
  }
  if (exclusiveMaximum != null && value >= exclusiveMaximum) {
    throw FormatException('Parameter "$parameterName" must smaller than $parameterName');
  }
  if (minimum != null && value < minimum) {
    throw FormatException('Parameter "$parameterName" must bigger than or equal to $minimum');
  }
  if (exclusiveMinimum != null && value <= exclusiveMinimum) {
    throw FormatException('Parameter "$parameterName" must bigger than $exclusiveMinimum');
  }
}