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Versions: 4
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Contents
# encoding: utf-8
require_relative "dependency"
module Hexx
module Helpers
# @api hide
# Module dependency constructor.
#
# Adds the dependency to selected module.
#
# @example
# ModuleDependency.add(MyModule, :some_module, DefaultImplementation)
#
# MyModule.some_module
# # => DefaultImplementation
#
# MyModule.some_module = AnotherImplementation
# # => AnotherImplementation
#
# MyModule.some_module = 1
# # fails with #<TypeError @message="1 is not a module" >
class ModuleDependency < Dependency
# @api hide
# Adds the dependency to given module
# @example (see Hexx::Helpers::ModuleDependency)
# @param [Module] target The module to declare the dependency of.
# @param [String, Symbol] name The name of the dependency.
# @param [Module] default The default implementation of the dependency.
# @api hide
# Adds the module dependency getter
# @return [ModuleDependency] +self+.
def add_getter
target.instance_eval getter
self
end
# @api hide
# Adds the module dependency setter
# @return [ModuleDependency] +self+.
def add_setter
target.instance_eval setter
self
end
private
# @raise [TypeError] if a target to add the dependency is not a module.
def check_target
return if target.is_a? Module
fail TypeError.new "#{ target.inspect } is not a module"
end
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems