BIND 10 #2087: add LabelSequence::getOffsetData() method

[BIND 10 Development]

#2087: add LabelSequence::getOffsetData() method
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                   Reporter:         |                 Owner:  muks
  jinmei                             |                Status:  reviewing
                       Type:  task   |             Milestone:
                   Priority:         |  Sprint-20120717
  medium                             |            Resolution:
                  Component:         |             Sensitive:  0
  libdns++                           |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  4
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
  scalable inmemory                  |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by jelte):

 * owner:  jelte => muks


Comment:

 There is one thing that I noticed (not necessarily just because of this
 ticket, but the combination with #2086 does make it visible;

 if you pull out data and offsets, you cannot use them to create a new
 labelsequence, or at least, not one with the same properties as the one
 you got the data from; the isAbsolute() property is 'reset' to true in the
 new object (because of the way that property is stored/checked). This
 could potentially also change comparison behaviour

 This may actually be a feature, or a bug, depending on the intended use (I
 have not decided which I think it is yet). And it may be useful, or might
 not matter in practice.

 It is fixable, but would require more info to go to the raw constructor i
 think. And if we're only going to need this for the rendering than we may
 actually want this property.

 Anyway, I think the code looks OK, and assuming the above is not a
 problem, I think this can be merged.

-- 
Ticket URL: <http://bind10.isc.org/ticket/2087#comment:9>
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