/// <summary>
/// Attempts to parse the specified <paramref name="value"/> into an
/// <see cref="IdentificationNumber"/> instance. The return value
/// indicates whether the parsing succeeded. Parsing will fail if
/// <paramref name="value"/> is <see langword="null"/>, empty, has an invalid
/// length, doesn't match checksum digits or has an otherwise invalid format.
/// </summary>
/// <param name="value">A string containing the number to parse.</param>
/// <param name="result">The resulting <see cref="IdentificationNumber"/> if parsing succeeded.</param>
/// <returns>
/// <see langword="true"/> if <paramref name="value"/> was
/// parsed successfully; otherwise, <see langword="false"/>.
/// </returns>
public static bool TryParse(string?value, out IdentificationNumber result)
{
if (value is null)
{
result = default;
return(false);
}
return(TryParse(value.AsSpan(), out result));
}
/// <summary>
/// Attempts to parse the specified <paramref name="value"/> into an
/// <see cref="IdentificationNumber"/> instance. The return value
/// indicates whether the parsing succeeded. Parsing will fail if
/// <paramref name="value"/> is <see langword="null"/>, empty, has an invalid
/// length, doesn't match checksum digits or has an otherwise invalid format.
/// </summary>
/// <param name="value">A string containing the number to parse.</param>
/// <param name="result">The resulting <see cref="IdentificationNumber"/> if parsing succeeded.</param>
/// <param name="error">The resulting <see cref="ParseError"/> if parsing failed.</param>
/// <returns>
/// <see langword="true"/> if <paramref name="value"/> was
/// parsed successfully; otherwise, <see langword="false"/>.
/// </returns>
public static bool TryParse(string?value, out IdentificationNumber result, out ParseError error)
{
if (value is null)
{
error = ParseError.InvalidLength;
result = default;
return(false);
}
return(TryParse(value.AsSpan(), out result, out error));
}
/// <summary>
/// Attempts to parse the specified <paramref name="value"/> into an
/// <see cref="IdentificationNumber"/> instance. The return value
/// indicates whether the parsing succeeded. Parsing will fail if
/// <paramref name="value"/> is <see langword="null"/>, empty, has an invalid
/// length, doesn't match checksum digits or has an otherwise invalid format.
/// </summary>
/// <param name="value">A string containing the number to parse.</param>
/// <param name="result">The resulting <see cref="IdentificationNumber"/> if parsing succeeded.</param>
/// <param name="error">The resulting <see cref="ParseError"/> if parsing failed.</param>
/// <returns>
/// <see langword="true"/> if <paramref name="value"/> was
/// parsed successfully; otherwise, <see langword="false"/>.
/// </returns>
public static bool TryParse(ReadOnlySpan <char> value, out IdentificationNumber result, out ParseError error)
{
result = default;
error = default;
if (value.Length != Length)
{
error = ParseError.InvalidLength;
return(false);
}
var k2 = Checksum.Mod11(value, K2Weights);
if (k2 == 10)
{
error = ParseError.InvalidChecksum;
return(false);
}
if (!TryGetDigit(value[10], out var k2Digit))
{
error = ParseError.InvalidCharacter;
return(false);
}
if (k2Digit != k2)
{
error = ParseError.InvalidChecksum;
return(false);
}
var k1 = Checksum.Mod11(value, K1Weights);
if (k1 == 10)
{
error = ParseError.InvalidChecksum;
return(false);
}
if (!TryGetDigit(value[9], out var k1Digit))
{
error = ParseError.InvalidCharacter;
return(false);
}
if (k1Digit != k1)
{
error = ParseError.InvalidChecksum;
return(false);
}
if (!TryReadThreeDecimalDigits(value, 6, out var individual))
{
error = ParseError.InvalidCharacter;
return(false);
}
if (!TryReadTwoDecimalDigits(value, 4, out var year))
{
error = ParseError.InvalidCharacter;
return(false);
}
var fullYear = GetFullYear(year, individual);
if (!fullYear.HasValue)
{
error = ParseError.InvalidYear;
return(false);
}
if (!TryReadTwoDecimalDigits(value, 2, out var month))
{
error = ParseError.InvalidCharacter;
return(false);
}
if (!TryReadTwoDecimalDigits(value, 0, out var day))
{
error = ParseError.InvalidCharacter;
return(false);
}
var dateOfBirth = GetDateOfBirth(fullYear.Value, month, day, out var kind, out error);
if (!dateOfBirth.HasValue)
{
return(false);
}
var checkDigits = (k1 * 10) + k2;
result = new IdentificationNumber(dateOfBirth.Value, individual, checkDigits, kind);
return(true);
}
/// <summary>
/// Attempts to parse the specified <paramref name="value"/> into an
/// <see cref="IdentificationNumber"/> instance. The return value
/// indicates whether the parsing succeeded. Parsing will fail if
/// <paramref name="value"/> is <see langword="null"/>, empty, has an invalid
/// length, doesn't match checksum digits or has an otherwise invalid format.
/// </summary>
/// <param name="value">A string containing the number to parse.</param>
/// <param name="result">The resulting <see cref="IdentificationNumber"/> if parsing succeeded.</param>
/// <returns>
/// <see langword="true"/> if <paramref name="value"/> was
/// parsed successfully; otherwise, <see langword="false"/>.
/// </returns>
public static bool TryParse(ReadOnlySpan <char> value, out IdentificationNumber result)
{
return(TryParse(value, out result, out _));
}
private static void Format(IdentificationNumber number, Span <char> buffer)
{
WriteTwoDecimalDigits((uint)number.CheckDigits, buffer, 9);
WriteThreeDecimalDigits((uint)number.IndividualNumber, buffer, 6);
WriteDateOfBirth(buffer, number.DateOfBirth, number.NumberKind);
}
