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# frozen_string_literal: true
module Gitlab
module Utils
# This module is to validate that delegator classes (`SimpleDelegator`) do not
# accidentally override important logic on the fabricated object.
module DelegatorOverride
def delegator_target(target_class)
return unless ENV['STATIC_VERIFICATION']
unless self < ::SimpleDelegator
raise ArgumentError, "'#{self}' is not a subclass of 'SimpleDelegator' class."
end
DelegatorOverride.validator(self).add_target(target_class)
end
def delegator_override(*names)
return unless ENV['STATIC_VERIFICATION']
raise TypeError unless names.all? { |n| n.is_a?(Symbol) }
DelegatorOverride.validator(self).add_allowlist(names)
end
def delegator_override_with(mod)
return unless ENV['STATIC_VERIFICATION']
raise TypeError unless mod.is_a?(Module)
DelegatorOverride.validator(self).add_allowlist(mod.instance_methods)
end
def self.validator(delegator_class)
validators[delegator_class] ||= Validator.new(delegator_class)
end
def self.validators
@validators ||= {}
end
def self.verify!
validators.each_value do |validator|
validator.expand_on_ancestors(validators)
validator.validate_overrides!
end
end
end
end
end
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