41 lines
964 B
Ruby
41 lines
964 B
Ruby
module Vool
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class Assignment < Statement
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attr_reader :name , :value
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def initialize(name , value )
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@name , @value = name , value
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end
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def normalize()
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raise "not named left #{name.class}" unless @name.is_a?(Symbol)
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raise "unsupported right #{value}" unless @value.is_a?(Named) or
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@value.is_a?(SendStatement) or @value.is_a?(Constant)
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end
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def chain_assign(assign , method)
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return assign unless @value.is_a?(SendStatement)
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@value.to_mom(method) << assign
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end
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def each(&block)
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block.call(self)
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@value.each(&block)
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end
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end
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class IvarAssignment < Assignment
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def normalize()
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super()
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return IvarAssignment.new(@name , @value)
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end
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def to_mom( method )
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to = Mom::SlotDefinition.new(:message ,[ :receiver , @name])
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from = @value.slot_definition(method)
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return chain_assign( Mom::SlotLoad.new(to,from) , method)
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end
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end
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end
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