Sha256: 877df6459aff1991cf39e879cfcb860e5837c02346ee9669f1dbacb4c9fe937d
Contents?: true
Size: 870 Bytes
Versions: 6
Compression:
Stored size: 870 Bytes
Contents
class ImplementationError < StandardError
end
# namespace to store contracts
module InterfaceContracts
end
class Module
def implements(*klasses)
klasses.each do |klass|
unless klass === Class
InterfaceContracts.module_eval %Q{
class ::InterfaceContracts::#{klass} < ::#{klass}; end
#{klass}.freeze
}
end
end
ifc_str = '[' + klasses.collect { |k| "InterfaceContracts::#{k.name}" }.join(',') + ']'
ifm = Module.new
ifm.module_eval %Q{
def initialize(*args)
#{ifc_str}.each do |k|
umeths = k.public_instance_methods(true) - self.public_methods
if umeths != []
raise ImplementationError, self.class.name + " as " + k.name + "\n" + umeths.sort.join(', ')
end
end
super
end
}
class_eval { include ifm }
end
end
Version data entries
6 entries across 6 versions & 2 rubygems