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Contents
# encoding: utf-8
module Infoboxer
module Navigation
module Lookup
# Incapsulates storage of selectors, used in {Lookup::Node node lookup}.
#
# See {Lookup::Node Lookup::Node} for detailed explanation of available selectors.
class Selector
include ProcMe
def initialize(*arg, &block)
@arg = [arg, block].flatten.compact.map(&method(:sym_to_class))
@arg.each do |a|
a.reject!{|k, v| v.nil?} if a.is_a?(Hash)
end
end
attr_reader :arg
def ==(other)
self.class == other.class && arg == other.arg
end
def inspect
"#<Selector(#{@arg.map(&:to_s).join(', ')})>"
end
def matches?(node)
@arg.all?{|a| arg_matches?(a, node)}
end
private
def sym_to_class(a)
if a.is_a?(Symbol) && a =~ /^[A-Z][a-zA-Z]+$/ && Tree.const_defined?(a)
Tree.const_get(a)
else
a
end
end
def arg_matches?(check, node)
case check
when Proc
check.call(node)
when Hash
check.all?{|attr, value|
node.respond_to?(attr) && value === node.send(attr)
}
when Symbol
node.respond_to?(check) && node.send(check)
else
check === node
end
end
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems