BIND 10 #2368: [meta] complete and generic zone file parser and loader

[BIND 10 Development]

#2368: [meta] complete and generic zone file parser and loader
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                   Reporter:         |                 Owner:
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:  Next-Sprint-
                   Priority:         |  Proposed
  medium                             |            Resolution:
                  Component:         |             Sensitive:  0
  Unclassified                       |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  meta
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
  loadzone-ng                        |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Description changed by jinmei:

Old description:

> This will eventually replace b10-loadzone and revise dns++
> masterLoad().
>
> In the very initial phase, I propose introducing a generic lexer and
> master file parser using the lexer.  The parser initially only handles
> a limited set of entire syntax.  Then update the data source loader
> and b10-loadzone using them.  In the next phase we'll support
> more variations of master file syntax (no tickets are created for
> them).
>
> For the initial phase, we'll need to do:
> - generic lexer: #2369, #2370, #2371, #2372, #2373, #2374, #2375
> - generic parser: #2376, #2377 (and #2381, less important)
> - zone loader: #2378, #2379, #2380
>
> Second phase features:
> - other libdns++ objects updates: #2383 (more important/urgent), #2384
> - rdata updates: #2382, #2385, #2386, #2387, #2388, #2389, #2390, #2391,
> #2392, #2426
> - complete `MasterLoader`: #2427, #2428, #2429, #2430, #2431
> - in-memory load extensions: #2440, #2441
> - zone validation: #2432, #2433, #2434, #2435, #2436
> - zone validation after xfrin: #2437, #2438, #2439

New description:

 This will eventually replace b10-loadzone and revise dns++
 masterLoad().

 In the very initial phase, I propose introducing a generic lexer and
 master file parser using the lexer.  The parser initially only handles
 a limited set of entire syntax.  Then update the data source loader
 and b10-loadzone using them.  In the next phase we'll support
 more variations of master file syntax (no tickets are created for
 them).

 For the initial phase, we'll need to do:
 - generic lexer: #2369, #2370, #2371, #2372, #2373, #2374, #2375
 - generic parser: #2376, #2377 (and #2381, less important)
 - zone loader: #2378, #2379, #2380

 Second phase features:
 - other libdns++ objects updates: #2383 (more important/urgent), #2384
 - rdata updates: #2442, #2382, #2385, #2386, #2387, #2388, #2389, #2390,
 #2391, #2392, #2426
 - complete `MasterLoader`: #2427, #2428, #2429, #2430, #2431
 - in-memory load extensions: #2440, #2441
 - zone validation: #2432, #2433, #2434, #2435, #2436
 - zone validation after xfrin: #2437, #2438, #2439

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Ticket URL: <http://bind10.isc.org/ticket/2368#comment:9>
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