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Contents
module Scorpion
# An injected attribute and it's configuration.
class Attribute
# ============================================================================
# @!group Attributes
#
# @!attribute
# @return [Symbol] the name of the attribute.
attr_reader :name
# @!attribute
# @return [Class,Module,Symbol] contract that describes the desired behavior
# of the injected object.
def contract
@contract = @contract.constantize if @contract.is_a? String
@contract
end
# @!attribute
# @return [Array<Symbol>] traits that must match on instances of the {#contract}
attr_reader :traits
# @!attribute
# @return [Boolean] true if the attribute is not immediately required and
# will be hunted down on first use.
def lazy?; @lazy end
# @!attribute
# @return [Boolean] true if the attribute should have a public writer.
def public?; @public end
# @!attribute
# @return [Boolean] true if the attribute should have a public writer.
def private?; @private end
#
# @!endgroup Attributes
def initialize( name, contract, traits = nil, options = {} )
@name = name.to_sym
@contract = contract
@traits = Array( traits ).flatten.freeze
@trait_set = Set.new( @traits.map{ |t| :"#{t}?" } )
@lazy = options.fetch( :lazy, false )
@public = options.fetch( :public, false )
@private = options.fetch( :private, false )
end
def respond_to?( name, include_all = false )
super || trait_set.include?( name )
end
private
# @return [Set] the set of traits associated with the attribute pre-processed
# to include the trait names with a '?' suffix.
attr_reader :trait_set
def method_missing( name, *args )
if is_trait_method?( name )
trait_set.include? name
else
super
end
end
def is_trait_method?( name )
name[-1] == '?'
end
end
end
Version data entries
26 entries across 26 versions & 1 rubygems