Function IsValidDataInputName

tensorflow/core/framework/node_def_util.cc:763–779

}

bool IsValidDataInputName(StringPiece sp) {
  // Data inputs are op_name, op_name:0, or op_name:12345.
  Scanner scan(sp);
  scan.One(Scanner::LETTER_DIGIT_DOT)
      .Any(Scanner::LETTER_DIGIT_DASH_DOT_SLASH_UNDERSCORE);
  if (scan.Peek() == ':') {
    scan.OneLiteral(":");
    if (scan.Peek() == '0') {
      scan.OneLiteral("0");  // :0
    } else {
      scan.Many(Scanner::DIGIT);  // :[1-9][0-9]*
    }
  }
  scan.Eos();

  return scan.GetResult();
}

bool IsValidControlInputName(StringPiece sp) {
  return Scanner(sp)