27 lines
578 B
Ruby
27 lines
578 B
Ruby
# frozen_string_literal: true
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module Rpl
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module Lang
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module Core
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module_function
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# ( … x -- […] ) pack x stacks levels into a list
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def to_list
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args = stack_extract( [%i[numeric]] )
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args = stack_extract( %i[any] * args[0][:value] )
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@stack << { type: :list,
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value: args.reverse }
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end
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# ( […] -- … ) unpack list on stack
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def unpack_list
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args = stack_extract( [%i[list]] )
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args[0][:value].each do |elt|
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@stack << elt
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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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