Method split

src/main/java/net/starlark/java/eval/StringModule.java:386–423

(
      String self, String sep, Object maxSplitO, StarlarkThread thread)

  }

  @StarlarkMethod(
      name = "split",
      doc =
          "Returns a list of all the words in the string, using <code>sep</code> as the "
              + "separator, optionally limiting the number of splits to <code>maxsplit</code>.",
      parameters = {
        @Param(name = "self", doc = "This string."),
        @Param(name = "sep", doc = "The string to split on.", named = true),
        @Param(
            name = "maxsplit",
            allowedTypes = {@ParamType(type = StarlarkInt.class)},
            defaultValue = "unbound",
            doc = "The maximum number of splits.",
            named = true)
      },
      useStarlarkThread = true)
  public StarlarkList<String> split(
      String self, String sep, Object maxSplitO, StarlarkThread thread) throws EvalException {
    if (sep.isEmpty()) {
      throw Starlark.errorf("Empty separator");
    }
    int maxSplit = Integer.MAX_VALUE;
    if (maxSplitO != Starlark.UNBOUND) {
      maxSplit = Starlark.toInt(maxSplitO, "maxsplit");
    }
    StarlarkList<String> res = StarlarkList.newList(thread.mutability());
    int start = 0;
    while (true) {
      int end = self.indexOf(sep, start);
      if (end < 0 || maxSplit-- == 0) {
        res.addElement(self.substring(start));
        break;
      }
      res.addElement(self.substring(start, end));
      start = end + sep.length();
    }
    return res;
  }

  @StarlarkMethod(
      name = "rsplit",