57 lines
1.2 KiB
Ruby
57 lines
1.2 KiB
Ruby
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# frozen_string_literal: true
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module Gitlab
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module Ci
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module Interpolation
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class Access
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attr_reader :content, :errors
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MAX_ACCESS_OBJECTS = 5
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MAX_ACCESS_BYTESIZE = 1024
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def initialize(access, ctx)
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@content = access
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@ctx = ctx
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@errors = []
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if objects.count <= 1 # rubocop:disable Style/IfUnlessModifier
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@errors.push('invalid interpolation access pattern')
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end
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if access.bytesize > MAX_ACCESS_BYTESIZE # rubocop:disable Style/IfUnlessModifier
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@errors.push('maximum interpolation expression size exceeded')
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end
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evaluate! if valid?
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end
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def valid?
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errors.none?
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end
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def objects
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@objects ||= @content.split('.', MAX_ACCESS_OBJECTS)
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end
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def value
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raise ArgumentError, 'access path invalid' unless valid?
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@value
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end
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private
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def evaluate!
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raise ArgumentError, 'access path invalid' unless valid?
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@value ||= objects.inject(@ctx) do |memo, value|
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memo.fetch(value.to_sym)
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end
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rescue KeyError => e
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@errors.push(e)
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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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