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Versions: 19
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Contents
module CSL
class Style
class Choose < Node
alias blocks children
class Block < Node
attr_struct :match, *Schema.attr(:conditionals)
attr_defaults :match => 'all'
class << self
def matches?(nodename)
nodename === ':if' || nodename === ':elseif' || nodename === ':else'
end
end
def conditions
attributes_for(*Schema.attr(:conditionals)).map do |name, values|
extract_type_and_matcher_from(name) << values.to_s.split(/\s+/)
end
end
def matcher(match = attributes[:match])
case match.to_s
when 'any'
:any?
when 'none'
:none?
else
:all?
end
end
private
def extract_type_and_matcher_from(attribute)
type, match = attribute.to_s.split(/-(any|all|none)$/, 2)
# subtle: if the default matcher is :none? and there
# is no override we want to use :any? inside the nested
# lists to avoid double negation during evaluation of
# the entire expression!
if match.nil?
match = matcher
[type.to_sym, match == :none? ? :any? : matcher]
else
[type.to_sym, matcher(match)]
end
end
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems