Function deterministicRec

js/sign/src/cbor/deterministic.ts:29–50

(input: Uint8Array, index: number)

// CBOR item starting from the given index. Returns the length of the CBOR item
// in bytes.
function deterministicRec(input: Uint8Array, index: number): number {
  const b = input[index];

  switch (getMajorType(b)) {
    case MajorType.PosInt: {
      const { lengthInBytes } = unsignedIntegerDeterministic(input, index);
      return lengthInBytes + 1;
    }
    case MajorType.ByteString:
    case MajorType.Text:
      return textOrByteStringDeterministic(input, index) + 1;

    case MajorType.Array:
      return arrayDeterministic(input, index);

    case MajorType.Map:
      return mapDeterministic(input, index);

    default:
      throw new Error('Missing implementation for a major type.');
  }
}

// unsignedIntegerDeterministic calculates the value of the unsigned integer to ensure that
// the right amount of bytes is used in the CBOR encoding. It returns both,