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module Vedeu
# Converts an options Hash into a class containing methods for each of the
# keys, which when called returns the value associated. When the value is
# either true or false, an additional predicate method is created.
#
# @api private
class Options
# @!attribute [r] _defined
# @return [Array<Symbol>]
attr_reader :_defined
# @param options [Hash]
# @return [Vedeu::Options]
def self.build(options = {})
new(options)._build
end
# Returns a new instance of Vedeu::Options.
#
# @param options [Hash]
# @return [Vedeu::Options]
def initialize(options = {})
@_options = options
@_defined = []
end
# @return [Vedeu::Options]
def _build
_options.each do |name, value|
_create_method(name) { value }
if value.is_a?(TrueClass) || value.is_a?(FalseClass)
_create_alias("#{name}?", name)
end
end
self
end
protected
# @!attribute [r] _options
# @return [Hash]
attr_reader :_options
private
# @param alias_name [String|Symbol]
# @param method_name [String|Symbol]
# @return [void]
def _create_alias(alias_name, method_name)
@_defined << alias_name.to_sym
define_singleton_method(alias_name, method(method_name))
end
# @param name [String|Symbol]
# @param block [Proc]
# @return [void]
def _create_method(name, &block)
@_defined << name.to_sym
self.class.send(:define_method, name, &block)
end
end # Option
end # Vedeu
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13 entries across 13 versions & 1 rubygems