Andrew Miner
e612cedf8d
* Fix the reformat script to work with recent changes * Fix the convert-nei-dump script to remove leading and trailing '_' * Fix various broken tests
50 lines
1.5 KiB
CoffeeScript
50 lines
1.5 KiB
CoffeeScript
###
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Crafting Guide - versioned_parser_base.coffee
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Copyright (c) 2015 by Redwood Labs
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All rights reserved.
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###
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########################################################################################################################
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module.exports = class VersionedParserBase
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constructor: (options={})->
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@_parsers = @_createParsers options
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@_currentSchema = _.chain(@_parsers).keys().last().value()
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# Class Members ################################################################################
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@SCHEMA = /schema: *([0-9]+)/
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# Public Methods ###############################################################################
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parse: (text)->
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return unless text?
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schema = @_identifySchema text
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parser = @_parsers[schema]
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if not parser? then throw new Error "schema version #{schema} is not supported"
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parser.parse text
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return @_model
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unparse: (schema=null)->
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schema ?= @_currentSchema
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parser = @_parsers["#{schema}"]
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if not parser? then throw new Error "version #{schema} is not supported"
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return parser.unparse()
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# Overridable Methods ##########################################################################
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_createParsers: (options)->
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throw new Error 'subclasses must override this method'
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_identifySchema: (text)->
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match = VersionedParserBase.SCHEMA.exec text
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if not match? then throw new Error 'missing "schema" declaration'
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return match[1]
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