import "stdUtils.scrypt";




library _opcat_labs_scrypt_ts_opcat_4_0_0__rs__ByteStringWriter {
  bytes buf;
  constructor() {
    this.buf = b'';
  }
  function writeBytes(bytes buf) : bool {
    int n = len(buf);
    bytes header = b'';
    if(n < 76) {
        header = _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.toLEUnsigned(n, 1);
      } else if(n < 0x100) {
        header = b'4c' + _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.toLEUnsigned(n, 1);
      } else if(n < 0x10000) {
        header = b'4d' + _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.toLEUnsigned(n, 2);
      } else if(n < 0x100000000) {
        header = b'4e' + _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.toLEUnsigned(n, 4);
      } else {
        require(false);
      }
    this.buf += header + buf;
    return true;
  }
  function writeBool(bool x) : bool {
    this.buf += x ? b'01' : b'00';
    return true;
  }
  function writeVarInt(int x) : bool {
    require(x >= 0);
    int size = 0;
    if(x < 0xfd) {
        size = 1;
      } else if(x < 0x10000) {
        this.buf += _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.VARINT_2BYTE;
        size = 2;
      } else if(x < 0x100000000) {
        size = 4;
        this.buf += _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.VARINT_4BYTE;
      } else {
        size = 8;
        this.buf += _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.VARINT_8BYTE;
      }
    this.buf += _opcat_labs_scrypt_ts_opcat_4_0_0__rs__StdUtils.toLEUnsigned(x, size);
    return true;
  }
}