32 lines
473 B
Ruby
32 lines
473 B
Ruby
module Register
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# a branch must branch to a block.
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class Branch < Instruction
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def initialize source , to
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super(source)
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raise "No block" unless to
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@block = to
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end
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attr_reader :block
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def to_s
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"#{self.class.name}: #{block.name}"
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end
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alias :inspect :to_s
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end
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class IsZeroBranch < Branch
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end
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class IsNegativeBranch < Branch
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end
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class IsPositiveBranch < Branch
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end
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class AlwaysBranch < Branch
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end
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end
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