35 lines
1.1 KiB
Ruby
35 lines
1.1 KiB
Ruby
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module Mom
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module Builtin
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class Comparison < ::Mom::Instruction
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attr_reader :operator
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def initialize(name , operator)
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super(name)
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@operator = operator
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end
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def to_risc(compiler)
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builder = compiler.builder(compiler.source)
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operator = @operator # make accessible in block
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builder.build do
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integer! << message[:receiver]
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integer.reduce_int
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integer_reg! << message[:arguments]
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integer_reg << integer_reg[Parfait::NamedList.type_length + 0] #"other" is at index 0
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integer_reg.reduce_int
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swap_names(:integer , :integer_reg) if(operator.to_s.start_with?('<') )
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integer.op :- , integer_reg
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if_minus false_label
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if_zero( false_label ) if operator.to_s.length == 1
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object! << Parfait.object_space.true_object
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branch merge_label
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add_code false_label
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object << Parfait.object_space.false_object
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add_code merge_label
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message[:return_value] << object
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end
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return compiler
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end
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end
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end
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end
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