75 lines
1.7 KiB
Ruby
75 lines
1.7 KiB
Ruby
module Gitlab
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module Ci
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class Config
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module Extendable
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class Entry
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attr_reader :key
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def initialize(key, context, parent = nil)
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@key = key
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@context = context
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@parent = parent
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raise StandardError, 'Invalid entry key!' unless @context.key?(@key)
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end
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def extensible?
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value.is_a?(Hash) && value.key?(:extends)
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end
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def value
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@value ||= @context.fetch(@key)
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end
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def base_hash!
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@base ||= Extendable::Entry
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.new(extends_key, @context, self)
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.extend!
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end
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def extends_key
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value.fetch(:extends).to_s.to_sym if extensible?
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end
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def path
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Array(@parent&.path).compact.push(key)
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end
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def extend!
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return value unless extensible?
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if unknown_extension?
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raise Extendable::Collection::InvalidExtensionError,
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'Unknown extension!'
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end
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if invalid_base?
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raise Extendable::Collection::InvalidExtensionError,
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'Invalid base hash!'
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end
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if circular_dependency?
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raise Extendable::Collection::CircularDependencyError
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end
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@context[key] = base_hash!.deep_merge(value)
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end
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private
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def circular_dependency?
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path.count(key) > 1
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end
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def unknown_extension?
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!@context.key?(key)
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end
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def invalid_base?
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!@context[extends_key].is_a?(Hash)
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end
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end
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end
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end
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end
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end
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