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module Chronic
class Separator < Tag #:nodoc:
def self.scan(tokens)
tokens.each_index do |i|
if t = self.scan_for_commas(tokens[i]) then tokens[i].tag(t); next end
if t = self.scan_for_slash_or_dash(tokens[i]) then tokens[i].tag(t); next end
if t = self.scan_for_at(tokens[i]) then tokens[i].tag(t); next end
if t = self.scan_for_in(tokens[i]) then tokens[i].tag(t); next end
end
tokens
end
def self.scan_for_commas(token)
scanner = {/^,$/ => :comma}
scanner.keys.each do |scanner_item|
return SeparatorComma.new(scanner[scanner_item]) if scanner_item =~ token.word
end
return nil
end
def self.scan_for_slash_or_dash(token)
scanner = {/^-$/ => :dash,
/^\/$/ => :slash}
scanner.keys.each do |scanner_item|
return SeparatorSlashOrDash.new(scanner[scanner_item]) if scanner_item =~ token.word
end
return nil
end
def self.scan_for_at(token)
scanner = {/^(at|@)$/ => :at}
scanner.keys.each do |scanner_item|
return SeparatorAt.new(scanner[scanner_item]) if scanner_item =~ token.word
end
return nil
end
def self.scan_for_in(token)
scanner = {/^in$/ => :in}
scanner.keys.each do |scanner_item|
return SeparatorIn.new(scanner[scanner_item]) if scanner_item =~ token.word
end
return nil
end
def to_s
'separator'
end
end
class SeparatorComma < Separator #:nodoc:
def to_s
super << '-comma'
end
end
class SeparatorSlashOrDash < Separator #:nodoc:
def to_s
super << '-slashordash-' << @type.to_s
end
end
class SeparatorAt < Separator #:nodoc:
def to_s
super << '-at'
end
end
class SeparatorIn < Separator #:nodoc:
def to_s
super << '-in'
end
end
end
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