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Contents
module Avro
module Builder
# This module provides methods for defining options that can be
# set via the DSL on various objects.
#
# These attributes can only be set as options via the private
# #attribute= methods, and not as methods in DSL block.
#
# When a DSL option is defined, the class also keeps track of the
# option names.
module DslOptions
def self.included(base)
base.extend ClassMethods
end
def dsl_option?(name)
self.class.dsl_option_names.include?(name.to_sym)
end
module ClassMethods
# Defines a private writer with #{dsl_name}= to set an attribute stored in the
# instance variable @#{name}.
def dsl_option(name, dsl_name:)
add_option_name(name)
add_attribute_name(dsl_name)
aliased_writer = "#{dsl_name}="
define_method(aliased_writer) do |value|
instance_variable_set("@#{name}", value)
end
private(aliased_writer)
end
def dsl_option_names
@dsl_option_names ||=
if superclass.respond_to?(:dsl_option_names)
superclass.dsl_option_names.dup
else
Set.new
end
end
def add_option_name(name)
dsl_option_names << name
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems