AtEnd (StringTokenizer function)

Is current tokenizing position at the end of the string?

AtEnd is a member of the StringTokenizer class.

This method returns a Boolean value that indicates whether the present tokenizing position is immediately after the last token. The value is True if the position at after the last token; otherwise it is False.

The tokenizing position is given by NextPosition.

Syntax

  %bool = %tok:AtEnd

Syntax terms

%bool

An enumeration object of type Boolean to contain the returned value of AtEnd. For more information about Boolean enumerations, see Using Boolean enumerations.

%tok

A StringTokenizer object variable.

Usage Notes

• The current tokenizing position may be after the last token but not necessarily at the end of the token string. In the following code sequence, the return from AtEnd is True and the position is not at the end of the string:

      %tok:string = 'example      '
      %tok:nextPosition = 10
      %tok:atEnd
  

• NotAtEnd is the reverse of AtEnd: it returns a value of False if the current tokenizing position is at the end of the string.

Examples

The following request selects the string's tokens one after another until the end of the string is detected:

    begin
    %tok is object stringtokenizer
    %tok = new
    %tok:string = 'Content-Type: text/plain; charset="US-ASCII"'
    repeat while not %tok:atEnd
       printText {~} is {%tok:nextToken}
    end repeat
    end

The result is:

    %tok:nextToken is Content-Type:
    %tok:nextToken is text/plain;
    %tok:nextToken is charset="US-ASCII"