33 lines
948 B
Ruby
33 lines
948 B
Ruby
module Ast
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class ReturnExpression < Expression
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attr_reader :expression
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def initialize expression
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@expression = expression
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end
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def inspect
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self.class.name + ".new(" + expression.inspect + " )"
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end
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def to_s
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"return #{expression}\n"
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end
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def attributes
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[:expression]
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end
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def compile context , into
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puts "compiling return expression #{expression}, now return in 7"
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expression_value = expression.compile(context , into)
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# copied from function expression: TODO make function
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return_reg = Vm::Integer.new(7)
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if expression_value.is_a?(Vm::IntegerConstant) or expression_value.is_a?(Vm::StringConstant)
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return_reg.load into , expression_value
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else
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return_reg.move( into, expression_value ) if expression_value.register != return_reg.register
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end
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#function.set_return return_reg
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return return_reg
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end
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end
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end |