1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
|
module Chronic
class Ordinal < Tag
# Scan an Array of {Token}s and apply any necessary Ordinal tags to
# each token
#
# @param [Array<Token>] tokens Array of tokens to scan
# @param [Hash] options Options specified in {Chronic.parse}
# @return [Array] list of tokens
def self.scan(tokens, options)
tokens.each do |token|
if t = scan_for_ordinals(token) then token.tag(t) end
if t = scan_for_days(token) then token.tag(t) end
end
end
# @param [Token] token
# @return [Ordinal, nil]
def self.scan_for_ordinals(token)
Ordinal.new($1.to_i) if token.word =~ /^(\d*)(st|nd|rd|th)$/
end
# @param [Token] token
# @return [OrdinalDay, nil]
def self.scan_for_days(token)
if token.word =~ /^(\d*)(st|nd|rd|th)$/
unless $1.to_i > 31 || $1.to_i < 1
OrdinalDay.new(token.word.to_i)
end
end
end
def to_s
'ordinal'
end
end
class OrdinalDay < Ordinal #:nodoc:
def to_s
super << '-day-' << @type.to_s
end
end
end
|