68 lines
1.6 KiB
Ruby
68 lines
1.6 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 Template
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include Gitlab::Utils::StrongMemoize
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attr_reader :blocks, :ctx
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TooManyBlocksError = Class.new(StandardError)
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InvalidBlockError = Class.new(StandardError)
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MAX_BLOCKS = 10_000
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def initialize(config, ctx)
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@config = Interpolation::Config.fabricate(config)
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@ctx = Interpolation::Context.fabricate(ctx)
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@errors = []
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@blocks = {}
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interpolate! 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 errors
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@errors + @config.errors + @ctx.errors + @blocks.values.flat_map(&:errors)
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end
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def size
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@blocks.size
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end
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def interpolated
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@result if valid?
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end
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private
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def interpolate!
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@result = @config.replace! do |data|
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Interpolation::Block.match(data) do |block, data|
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evaluate_block(block, data)
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end
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end
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rescue TooManyBlocksError
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@errors.push('too many interpolation blocks')
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rescue InvalidBlockError
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@errors.push('interpolation interrupted by errors')
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end
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strong_memoize_attr :interpolate!
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def evaluate_block(block, data)
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block = (@blocks[block] ||= Interpolation::Block.new(block, data, ctx))
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raise TooManyBlocksError if @blocks.count > MAX_BLOCKS
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raise InvalidBlockError unless block.valid?
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block.value
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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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