44 lines
899 B
Ruby
44 lines
899 B
Ruby
# frozen_string_literal: true
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module Rake
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class Scope < LinkedList # :nodoc: all
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# Path for the scope.
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def path
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map(&:to_s).reverse.join(":")
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end
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# Path for the scope + the named path.
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def path_with_task_name(task_name)
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"#{path}:#{task_name}"
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end
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# Trim +n+ innermost scope levels from the scope. In no case will
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# this trim beyond the toplevel scope.
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def trim(n)
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result = self
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while n > 0 && ! result.empty?
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result = result.tail
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n -= 1
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end
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result
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end
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# Scope lists always end with an EmptyScope object. See Null
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# Object Pattern)
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class EmptyScope < EmptyLinkedList
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@parent = Scope
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def path
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""
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end
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def path_with_task_name(task_name)
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task_name
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end
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end
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# Singleton null object for an empty scope.
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EMPTY = EmptyScope.new
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end
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end
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