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Contents
#--
# Ruby Whois
#
# An intelligent pure Ruby WHOIS client and parser.
#
# Copyright (c) 2009-2012 Simone Carletti <weppos@weppos.net>
#++
require 'strscan'
module Whois
class Record
module Scanners
# The Ast module tries to emulate a super-simple Abstract Syntax Tree structure
# including method for accessing ast nodes.
#
# == Usage
#
# Include the Ast module and provide a <tt>parse</tt> instance method.
# <tt>parse</tt> should returns a Hash representing the AST.
#
# def parse
# Scanner.new.parse
# end
# # => { "created_on" => "2009-12-12", ... }
#
# Now you can access the AST using the <tt>node</tt> method.
#
# node "created_on"
# # => "2009-12-12"
#
# node? "created_on"
# # => true
#
# node? "created_at"
# # => false
#
module Ast
def node(key)
if block_given?
value = ast[key]
value = yield(value) unless value.nil?
value
else
ast[key]
end
end
def node?(key)
!ast[key].nil?
end
private
def ast
@ast ||= parse
end
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems