Function utf8Decode2 [src]

Prototype

pub fn utf8Decode2(bytes: [2]u8) Utf8Decode2Error!u21

Parameters

bytes: [2]u8

Possible Errors

Utf8ExpectedContinuation

Utf8OverlongEncoding

Source

  pub fn utf8Decode2(bytes: [2]u8) Utf8Decode2Error!u21 {
    assert(bytes[0] & 0b11100000 == 0b11000000);
    var value: u21 = bytes[0] & 0b00011111;

    if (bytes[1] & 0b11000000 != 0b10000000) return error.Utf8ExpectedContinuation;
    value <<= 6;
    value |= bytes[1] & 0b00111111;

    if (value < 0x80) return error.Utf8OverlongEncoding;

    return value;
}  