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Contents
module EDTF
class Set
extend Forwardable
include Enumerable
include Comparable
def_delegators :@dates, :size, :length, :empty?
def_delegators :to_a, :include?
attr_accessor :choice, :later, :earlier
def initialize(*dates)
@dates = ::Set.new(dates.flatten)
@choice, @later, @earlier = false, false, false
end
def initialize_copy(other)
@set = other.to_set
end
[:choice, :later, :earlier].each do |m|
define_method("#{m}?") { send(m) }
define_method("#{m}!") do
send("#{m}=", true)
self
end
end
def <<(date)
dates << date
self
end
def each
if block_given?
to_a.each(&Proc.new)
self
else
to_enum
end
end
def edtf
parenthesize(dates.map { |d|
d.respond_to?(:edtf) ? d.edtf : d.to_s
}.sort.join(','))
end
def to_a
dates.map { |d| Array(d) }.flatten.sort
end
def to_set
to_a.to_set
end
alias to_s edtf
def <=>(other)
return nil unless other.respond_to?(:to_a)
to_a <=> other.to_a
end
protected
attr_reader :dates
private
def parenthesize(string)
p = choice? ? %w([ ]) : %w({ })
p[-1,0] = '..' if earlier?
p[-1,0] = string unless string.empty?
p[-1,0] = '..' if later?
p.join
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems