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module Chronic
class Separator < Tag
# Scan an Array of {Token}s and apply any necessary Separator 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_commas(token) then token.tag(t); next end
if t = scan_for_slash_or_dash(token) then token.tag(t); next end
if t = scan_for_at(token) then token.tag(t); next end
if t = scan_for_in(token) then token.tag(t); next end
if t = scan_for_on(token) then token.tag(t); next end
end
end
# @param [Token] token
# @return [SeparatorComma, nil]
def self.scan_for_commas(token)
scan_for token, SeparatorComma, { /^,$/ => :comma }
end
# @param [Token] token
# @return [SeparatorSlashOrDash, nil]
def self.scan_for_slash_or_dash(token)
scan_for token, SeparatorSlashOrDash,
{
/^-$/ => :dash,
/^\/$/ => :slash
}
end
# @param [Token] token
# @return [SeparatorAt, nil]
def self.scan_for_at(token)
scan_for token, SeparatorAt, { /^(at|@)$/ => :at }
end
# @param [Token] token
# @return [SeparatorIn, nil]
def self.scan_for_in(token)
scan_for token, SeparatorIn, { /^in$/ => :in }
end
# @param [Token] token
# @return [SeparatorOn, nil]
def self.scan_for_on(token)
scan_for token, SeparatorOn, { /^on$/ => :on }
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
class SeparatorOn < Separator #:nodoc:
def to_s
super << '-on'
end
end
end
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