Sha256: f0ac3f6154ede48b32a0269998a90a37d79ec17902c598f597be3e4562f28d52
Contents?: true
Size: 1.23 KB
Versions: 10
Compression:
Stored size: 1.23 KB
Contents
# frozen_string_literal: true
# This module defines some methods for walking the reference tree
# of various objects.
module RefCheck
class SelfReference < StandardError
end
class NullReference < StandardError
end
# Build up a set of references.
# rubocop:disable Metrics/PerceivedComplexity
def build_references(refs = [], origin = nil, method = :all_refs)
if respond_to?(method)
send(method).each do |ref|
raise SelfReference, "#{origin} references itself at #{to_json}" if origin && ref.to_s == origin
raise NullReference, "#{origin} contains null value reference at #{to_json}" if origin && ref.nil?
refs << ref
end
end
ref_children.each do |elem|
# Nulls are not permitted in Cloudformation templates.
raise NullReference, "#{origin} contains null value reference at #{to_json}" if origin && elem.nil?
elem.build_references(refs, origin, method) if elem.respond_to?(:build_references)
end
refs
end
# rubocop:enable Metrics/PerceivedComplexity
def ref_children
[]
end
end
# Mixin to Array
class Array
include RefCheck
def ref_children
self
end
end
# Mixin to Hash
class Hash
include RefCheck
def ref_children
values
end
end
Version data entries
10 entries across 10 versions & 1 rubygems